Surface Water Sup ply 

of the United States 

1956

Part 1 -A. North Atlantic Slope Basins, Maine 

to Connecticut

Prepared under the direction of J. V. B. WELLS, Chief, Surface Water Branch

GEOLOGICAL SURVEY WATER-SUPPLY PA F K R 1431

Prepared in cooperation with the States 

of Connecticut, Maine, Massachusetts, 

New Hampshire, Rhode Island, and 

Vermont, and with other agencies

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1958
UNITED STATES DEPARTMENT OF THE INTERIOR 

FRED A. SEATON, Secretary

GEOLOGICAL SURVEY 

Thomas B. Nolan, Director

For sale by the Superintendent of Documents, U. S. Government Printing Office 

Washington 25, D. C. - Price $1.00 (paper cover)
PREFACE

This report was prepared by the Geological Survey in cooperation 

with the States of Connecticut, Maine, Massachusetts, New Hampshire, Ehode Island, and Vermont, and with other agencies, by personnel of the Water Resources Division, C. G. Paulsen, chief, succeeded 

by L. B. Leopold, under the general direction of J. V. B. Wells, chief, 

Surface Water Branch, and B. J. Peterson, chief, Basic Records 

Section, succeeded by F. J. Flynn.

The data were collected and computed under supervision of district 

engineers, Surface Water Branch, as follows:

B. L. Bigwood__________________________Hartford, Conn. 

H. B. Kinnison (succeeded by C. E. Knox)__________Boston, B rass. 

M. R. Stackpole (succeeded by G. S. Hayes)_______Augusta, Maine

in
CALENDAR FOR WATER YEAR 1956

OCTOBER 1955

S M T W T F S 

1

2345678

9 10 11 12 13 14 15

16 17 18 19 20 21 22

23 24 25 26 27 28 29

30 31

JANUARY 1956

S M T W T P S

1234567

 8 9 10 11 12 13 14

15 16 17 18 19 20 21

22 23 24 25 26 27 28

29 30 31

APRIL 1956

S M T W T P S

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8 9 10 11 12 13 14

15 16 17 18 19 20 21

22 23 24 25 26 27 28

29 30

JULY 1956

S M T W T F S

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8 9 10 11 12 13 14

15 16 17 18 19 20 21

22 23 24 25 26 27 28

29 30 31

IV

NOVEMBER 1955

5 M T W T P S 

12345

6 7 8 9 10 11 12

13 14 15 16 17 18 19

20 21 22 23 24 25 26

27 28 29 30

FEBRUARY 1956

S M T W T P S 

1234

5 6 7 8 9 10 11 

12 13 14 15 16 17 18 

19 20 21 22 23 24 25 

26 27 28 29

MAY 1956

5 M T W T P S 

12345

6 7 8 9 10 11 12

13 14 15 16 17 18 19

20 21 22 23 24 25 26

27 28 29 30 31

AUGUST 1956

S M T W T F S 

1234

5 6 7 8 9 10 11 

12 13 14 15 16 17 18 

19 20 21 22 23 24 25 

26 27 28 29 30 31

DECEMBER 1955

S M T W T P S 

123

4 5 6 7 8 9 10 

11 12 13 14 15 16 17 

18 19 20 21 22 23 24 

25 26 27 28 29 30 31

MARCH 1956

S M T W T F S 

123

4 5 6 7 8 9 10

11 12 13 14 15 16 17

18 19 20 21 22 23 24

25 26 27 28 29 30 31

JUNE 1956

5 M T W T F S 

1 2

3456789 

10 11 12 13 14 15 16 

17 18 19 20 21 22 23 

24 25 26 27 28 29 30

SEPTEMBER 1956

S M T W T F S 

1

2345678

9 10 11 12 13 14 15

16 17 18 19 20 21 22

23 24 25 26 27 28 29

30
CONTENTS

Page 

Scope of work....................................................................... 1

Cooperation......................................................................... 1

Divis ion of work.................................................................... 2

Definition of terms and abbreviations............................................... 2

Downstream order of listing gaging stations......................................... 3

Explanation of data................................................................. 3

Accuracy of field data and computed results.......................................... 7

Publications........................................................................ 8

Records of discharge collected by agencies other than the Geological Survey......... 11

Hydrologic conditions............................................................... 12

Gaging-station records..........'.................................................... 13

St. John River basin

St. John River at Ninemile Bridge, Maine.......................................... 13

St. John River at Dickey, Maine................................................... 14

Allagash River near Allagash, Maine............................................. 15

St. Francis River at outlet of Glazier Lake, near Connors, New Brunswick........ 16

Fish River near Fort Kent, Maine................................................ 17

St. John River below Fish River, at Fort Kent, Maine.............................. 18

Aroostook River:

Machias River near Ashland, Maine............................................. 19

Aroostook River at Washburn, Maine.............................................. 20

Meduxnekeag River near Houlton, Maine........................................... 21

St. Croix River basin

St. Croix River at Vanceboro, Maine............................................... 22

Grand Lake Stream at Grand Lake Stream, Maine................................... 23

St. Croix River near Baileyville, Maine........................................... 24

Pennys River basin

Dennys River at Dennysville , Maine................................................ 25

Machias River basin

Machias River at Whitneyville, Maine.............................................. 26

East Machias River at East Machias, Maine....................................... 27

Narraguagus River basin

Narraguagus River at Cherryfield, Maine........................................... 28

Union River basin

West Branch Union River at Amherst, Maine......................................... 29

Penobscot River basin

Penobscot River:

East Branch Penobscot River at Grindstone, Maine................................ 30

Penobscot River near Mattawamkeag, Maine.......................................... 31

Mattawamkeag River near Mattawamkeag, Maine..................................... 32

Piscataquis River near Dover-Foxcroft, Maine.................................... 33

Sebec River at Sebec, Maine................................................... 34

Pleasant River near Milo, Maine............................................... 35

Piscataquis River at Medford, Maine............................................. 3«

Penobscot River at West Enfield, Maine............................................ 37

Passadumkeag River at Lowell, Maine............................................. 38

Penobscot River at Passadumkeag, Maine............................................ 39

Kenduskeag Stream near Kenduskeag, Maine........................................ 40

Reservoirs in Penobscot River basin, Maine........................................ 41

Sheepscot River basin

Sheepscot River at North Whitefield , Maine ........................................ 42

Kennebec River basin

Moose River (head of Kennebec River):

Moosehead Lake at East Outlet, Maine.............................................. 43

Kennebec River at Moosehead, Maine................................................ 44

Kennebec River at The Forks, Maine................................................ 45

Dead River near Dead River, Maine............................................... 46

Dead River at The Forks, Maine.................................................. 47

Austin Stream at Bingham, Maine................................................. 48

Kennebec River at Bingham, Maine.................................................. 49

Carrabassett River near North Anson, Maine...................................... 50

Sandy River near Mercer, Maine.................................................. 51

Sebasticook River near Pittsfield, Maine........................................ 52

Cobbosseecontee Stream at Gardiner, Maine....................................... 53

Smaller reservoirs in Kennebec River basin, Maine................................. 54

Androscoggin River basin

Androscoggin River:

Umbagog Lake:

Magalloway River:

Diamond River near Wentworth Location, N. H................................... 55

Androscoggin River at Errol, N. H................................................. 56

Androscoggin River near Gorham, N. H.............................................. 57

Androscoggin River at Rumford, Maine.............................................. 58

Swift River near Roxbury, Maine................................................. 59

Nezinscot River at Turner Center, Maine......................................... 60

Little Androscoggin River near South Paris, Maine............................... 61

Little Androscoggin River near Auburn, Maine.................................... 62

Androscoggin River near Auburn, Maine............................................. 63

Reservoirs in Androscoggin River basin............................................ 64

Royal River basin

Royal River at Yarmouth, Maine.................................................... 65

Presumpscot River basin

Presumpscot River at outlet of Sebago Lake, Maine................................. 66

V
VI CONTENTS

Gaging-station records--Continued

Saco River basin Page 

Saco River near Conway, N. H...................................................... 67

Ossipee River at Effingham Palls, N. H.......................................... 68

Ossipee River at Cornish, Maine................................................. 69

Saco River at Cornish, Maine...................................................... 70

Little Ossipee River near South Limington, Maine................................ 71

Mousam River basin

Mousam River near West Kennebunk, Maine........................................... 72

Flscataqiia River basin

Salmon Palls River (head of Piscataqua River) near South Lebanon, Maine........... 73

Oyster River near Durham, N. H.................................................. 74

Lamprey River near Newmarket, N. H.............................................. 75

Merrlmack River basin

Pemigewasset River (head of Merrimack River) at Woodstock, N. H................... 76

Baker River near Rumney, N. H................................................... 77

Pemigewasset River at Plymouth, N. H.............................................. 78

Squam River at Ashland, N. H.................................................... 79

Smith River near Bristol, N. H.................................................. 80

Lake Winnipesaukee at The Weirs, N. H........................................... 81

Lake Winnipesaukee Outlet at Lakeport, N. H..................................... 82

Winnipesaukee River at Tilton, N. H............................................. 83

Merrimack River at Franklin Junction, N. H........................................ 84

Contoocook River at Peterboro , N. H............................................. 85

Nubanusit Brook near Peterboro , N. H.......................................... 86

North Branch Contoocook River near Antrim, N. H............................... 87

Beards Brook near Hillsboro, N, H........................................... 88

Contoocook River near Henniker, N. H............................................ 89

Warner River at Davisville , N. H.............................................. 90

Blackwater .River near Webster, N. H........................................... 91

Contoocook River at Penacook, N. H.............................................. 92

Soucook River near Concord, N. H................................................ 93

Suncook River at North Chichester, N. H......................................... 94

Piscataquog River:

South Branch Piscataquog River near Goffstown, N. H........................... 95

Piscataquog River near Goffstown, N. H.......................................... 96

Merrimack River near Goffs Palls, below Manchester, N. H.......................... 97

Cohas Brook:

Massabesic Lake:

Clark Brook at Auburn, N. H................................................. 98

Souhegan River at Merrimack, N. H............................................... 99

North Nashua River (head of Nashua River) near Leominster, Mass................. 100

South Branch Nashua River: 

Stillwater River:

Rocky Brook near Sterling, Mass........................................... 101

South Branch Nashua River at Clinton, Mass.................................... 102

Squannacook River near West Groton, Mass...................................... 103

Nashua River at East Pepperell, Mass............................................ 104

Assabet River (head of Concord River) at Maynard, Mass.......................... 105

Sudbury River at Framingham Center, Mass...................................... 106

Lake Cochituate Outlet at Cochltuate, Mass.................................. 106

Concord River below River Meadow Brook, at Lowell, Mass......................... 107

Merrimack River below Concord River, at Lowell, Mass.............................. 108

Reservoirs in Merrimack River basin............................................... 109

Parker River basin

Parker River at Byfield, Mass..................................................... 110

Ipswich River basin

Ipswich River at South Middleton, Mass ............................................ Ill

Ipswich River near Ipswich, Mass.................................................. 112

Mystic River basin

Aberjona River (head of Mystic River) at Winchester, Mass......................... 113

Charles River basin

Charles River at Charles River Village, Mass...................................... 114

Mother Brook at Dedham, Mass.................................................... 115

Charles River at Waltham, Mass.................................................... 116

Neponset River basin

Neponset River at Norwood , Mass................................................... 117

East Branch Neponset River at Canton, Mass...................................... 118

Westport River basin 

Westport River:

West Branch Westport River:

Adamsville Brook at Adamsville, R. I.......................................... 119

Taunton River basin

Taunton River at State Farm, Mass................................................. 120

Three Mile River:

Wading River at West Mansfield, Mass.......................................... 121

Wading River near Norton, Mass................................................ 122

Providence River basin

Kettle Brook (head of Providence River) at Worcester, Mass........................ 123

Quinsigamond River at North Grafton, Mass....................................... 124

Blackstone River (continuation of Kettle Brook) at Northbridge, Mass.............. 125

Branch River at Porestdale , R. I................................................ 126

Blackstone River at Woonsocket, R. I.............................................. 127

Providence River:

Woonasquatucket River at Centerdale, R. I....................................... 128

Pawtuxet River basin 

Pawtuxet River:

South Branch Pawtuxet River at Washington, R. I................................. 129

Pawtuxet River at Cranston, R. I.................................................. 130

Potowomut River basin

Potowomut River near East Greenwich, R. I......................................... 131
VII

Gag ing-station records--Continued 

Pawcatuck River basin

Pawcatuok River at Wood River Junction, R. I

Wood River at Hope Vail

Eawcatuck River at Westerly, R. I................................................. 134

Foquonock River basin

Great Brook (head of Poquonock River) at Poquonock Bridge, Conn................... 135

Thames River basin

Willimantic River (head of Thames River) near South Coventry, Conn................ 136

Hop River near Columbia, Conn................................................... 137

Still River (head of Natehaug River): 

Bungee Brook:

Safford Brook near Woodstock Valley, Conn................................... 138

Mount Hope River near Warrenville, Conn....................................... 139

Natchaug River:

Mansfield Hollow Reservoir at Mansfield Hollow, Conn............................ 140

Natchaug River at Willimantic, Conn............................................. 141

Shetucket River (continuation of Willimantic River) near Willimantic, Conn........ 142

Little River near Hanover , Conn................................................. 143

Quinebaug River at Westville, Mass.............................................. 144

Quinebaug River at Quinebaug, Conn.............................................. 145

French River:

Little River at Buffumville, Mass ........................................... 146

French River at Webster, Mass. ................................................ 147

Quinebaug River at Putnam, Conn................................................. 148

Five Mile River at Killingly, Conn............................................ 149

Moosup River at Moosup, Conn.................................................. 150

Quinebaug River at Jewett City, Conn............................................ 151

Yantic River at Yantic, Conn.................................................... 152

Connecticut River basin

Connecticut River at First Connecticut Lake, near Pittsburg, N. H................. 153

Connecticut River at North Stratford, N. H........................................ 154

Upper Ammonoosuc River near Groveton, M. H...................................... 155

Connecticut River near Dalton, N. H............................................... 156

East Branch Passumpsic River near East Haven, Vt................................ 157

Passumpsic River:

Moose River at Victory, Vt.................................................... 158

Moose River at St. Johnsbury, Vt.............................................. 159

Passumpsic River at Passumpsic, Vt.............................................. 160

Ammonoosuc River at Bethlehem Junction, N. H.................................... 161

Ammonoosuc River near Bath, N. H................................................ 162

Connecticut River at Wells River, Vt.............................................. 163

Wells River at Wells River, Vt.................................................. 164

Ompompanoosuc River at Union Village, Vt........................................ 165

White River: « 

Third Branch White River:

Ayers Brook at Randolph, Vt................................................. 166

White River at West Hartford, Vt................................................ 167

Connecticut River at White River Junction, Vt..................................... 168

Mascoma River at West Canaan, N. H.............................................. 169

Mascoma River at Mascoma, N. H.................................................. 170

Ottauquechee River at North Hartland, Vt........................................ 171

Sugar River at West Claremont, N. H............................................. 172

Black River at North Springfield, Vt............................................ 173

Williams River at Brockway Mills, Vt............................................ 174

Saxtons River at Saxtons River, Vt.............................................. 175

:onnecticut River at North Walpole, N. H.......................................... 176

Cold River at Drewsville , N. H.................................................. 177

West River at Jamaica, Vt....................................................... 178

West River at Wewfane , Vt....................................................... 179

Connecticut River at Vernon, Vt................................................... 180

Ashuelot River near Gilsum, N. H................................................ 181

Ashuelot River below Surry Mountain Dam, near Keene, N. H....................... 182

The Branch:

Otter Brook near Keene , N. H................................................ 183

South Branch Ashuelot River at Webb, near Marlboro, N. H...................... 184

Ashuelot River at Hinsdale, N. H................................................ 185

Millers River:

Tarbell Brook near Winchendon, Mass ........................................... 186

Millers River near Winchendon, Mass............................................. 187

Priest Brook near Winchendon, Mass ............................................ 188

Millers River at South Royalston, Mass.......................................... 189

East Branch Tully River near Athol, Mass ...................................... 190

Moss Brook at Wendell Depot, Mass............................................. 191

Millers River at Erving, Mass................................................... 192

-onneeticut River at Turners Falls , Mass.......................................... 193

Deerfield River at Charlemont, Mass ............................................. 194

North River at Shattuckville, Mass............................................ 195

Deerfield River near West Deerfield , Mass ....................................... 196

Jonnecticut JUver at Montague City, Mass........................................... 197

Mill River at Northampton, Mass ................................................. 198

Ware River (head of Chicopee River) near Barre, Mass............................ 199

Ware River at Coldbrook, Mass................................................... 200

Ware River at Gibbs Crossing, Mass.............................................. 1301

Swift River:

Hop Brook near New Salem, Mass.............................................. 202

East Branch Swift River near Hardwick, Mass................................. 203

Swift River at West Ware, Mass ................................................ 204

Quaboag River at West Brimfield, Mass......................................... 205

Chicopee River at Indian Orchard, Mass.......................................... 206

Westfield River at Knightville, Mass ............................................ 207
VIII CONTENTS

Gaging-station records--Continued 

Connecticut River basin Continued 

Westfield River Continued

Sykes Brook at Knightville, Mass ..............................................

Middle Branch Westfield River at Goss Heights, Mass ...........................

West Branch Westfleld River at Huntington, Mass...............................

Westfield Little River at outlet of Cobble Mountain Reservoir, near Westfield. 

Mass ....................................................................

Westfleld River near Westfield , Mass ............................................

Connecticut River at Thompsonyille, Conn..........................................

Scantlc River at Broad Brook, Conn..............................................

West Branch Farmington Riv,er near New Boston, Mass..............................

West Branch Farmington River above Still River, at Riverton, Conn...............

Still River at Robertsville, Conn.............................................

Farmington River:

Burlington Brook near Burlington, Conn.........................................

Pequabuck River at Forestville , Conn..........................................

Salmon Brook near Granby, Conn................................................

Farmington River at Rainbow, Conn...............................................

South Branch Park River at Hartford, Conn.......................................

North Branch Park River at Hartford, Conn.....................................

Park River at Hartford, Conn...........................:........................

Hoekanum River near East Hartford , Conn.........................................

Salmon River near East Hampton, Conn............................................

Eightmile River at North Plain, Conn............................................

East Branch Eightmile River near North Lyme , Conn.............................

Reservoirs in Connecticut River basin.............................................

Menunketesuck River basin

Menunketesuck River near Cl ir.' .-.n , Genii............................................

Quinnipiac River basin

Quinnipiac River at Wallingford, Conn.............................................

Housatonic River basin

East Branch Housatonic River at Coltsville, Mass..................................

Housatonic River near Great Barrington, Mass ......................................

Green River near Great Barrington, Mass........................................

Blackberry River at Canaan, Conn................................................

Housatonic River at Falls Village , Conn...........................................

Tenmile River near Gaylordsville, Conn..........................................

Housatonic River at Gaylordsville, Conn...........................................

Still River near Lanesville , Conn...............................................

Shepaug River at WoodVille , J i i.. ...............................................

Shepaug River near Roxbury , Conn................................................

Pomperaug River at Southbury, Conn..............................................

Housatonic River at Stevenson, Conn...............................................

Naugatuck Riger near Thomaston, Conn............................................

Leadmine Brook near Thomaston, Conn...........................................

Naugatuck River &t Beacon Falls , Conn...........................................

Reservoirs in Housatonic River basin..............................................

TM^k_Rlver basin 

3augai

ILLUSTRATIONS

Page 

Figure 1. Gaging-station structures: A.. Otter Brook near Keene, N. H.; B,

Pequabuck River at Forestvllle, Conn.; C_, Mill River at Northampton,

Mass................................................................... 4

2. Map of the United States showing areas covered by the 18 annual volumes

on surface-water supply................................................ 9

3. Comparison of discharge at two key gaging stations during 1956 water year

with median discharge for 25-year period............................... 12
SURFACE WATER SUPPLY OF MORTH ATLANTIC SLOPE BASINS, MAINE TO CONNECTICUT, 1956

SCOPE OF WORK

This volume is one of a series of 18 reports presenting measurements of stage, discharge, and content of streams, lakes, and reservoirs in the United States during the 

water year ending September 30, 1956. Since 1888, when the United States Geological Survey first studied streamflow in relation to problems of irrigation, similar measurements 

have been made at more than 13,500 gaging stations in the 48 States and at many others in 

the Territories of Alaska and Hawaii. On September 30, 1956, the Geological Survey and 

cooperating organizations were maintaining 6,910 gaging stations, including those in 

Alaska and Hawaii. Discharge measurements only were made at many other points in the 1956 

water year. The name of each stream measured at points other than gaging stations is not 

listed in the index of this report. Only the major river basins in which measurements 

were made are listed under the item "Discharge measurements" in the index.

COOPERATION

Many State, municipal, and private organizations have cooperated with the Geological 

Survey in this work by either furnishing or helping to collect data. Organizstions that 

supplied data are acknowledged in station descriptions, and organizations that assisted in 

the collection of data through cooperative agreements with the Survey are:

Connecticut: State Water Commission, H. P. Koppleman, chairman, and W. S. Wise, 

director; city of Hartford, Department of Public Works, C. W. Cooke, director, succeeded by L. C. Lovell; city of New Britain, Board of Water Commissioners, Franklin 

Atwater, chairman, succeeded by J. C. Wilks, and G. W. Wood, chief engineer; city of 

Torrington, W. T. Carroll, mayor, and W. P. Neirintz, city engineer.

Maine: Maine Public Utilities Commission, S. T. Pike, chairman, succeeded by 

T. E. Delehanty.

Massachusetts: State Department of Public Health, S. B. Kirkwood, commissioner, 

and C. I. Sterling, Jr., chief sanitary engineer; State Department of Public Works, 

J. A. Volpe, commissioner; Metropolitan District Commission, C. W. Greeno'igh, commissioner, and H. J. Toole, director and chief engineer of Water Division. 

New Hampshire: Water Resources Board, W. G. White, chairman.

Rhode Island: State Department of Public Works, Henry Ise', chief of Division of 

Harbors and Rivers.

Vermont: Water Conservation Board, R. W. Thieme, commissioner.

Assistance in the form of funds or services was given by the Corps of Engineers, Department of the Army, in collecting records published herein for 38 gaging stations', of which 

1 was in Connecticut, 11 were in Massachusetts, 15 in New Hampshire, and 11 in Vermont.

On waters adjacent to the international boundary, certain gaging stations are maintained 

by the United States (or Canada) under agreement with Canada (or the United States), and 

the records are obtained and compiled in a manner equally acceptable in both countries. 

These stations are designated herein as "international gaging stations."

1
SURFACE WATER SUPPLY, 1956, PART 1-A

The following organizations aided in collecting records:

Connecticut: Metropolitan Water Bureau of Hartford; borough of Groton; city of 

Water-bury; Bridgeport Hydraulic Co.; Collins Co.; Connecticut Light & Power Co.; 

Connecticut Power Co.; Parmington River Power Co.; Guilford-Chester Water Co.; and 

Rockville Water & Aqueduct Co.

Maine: Bangor Hydro-Electric Co.; St. Croix Paper Co.; and Unior Water Power Co.

Massachusetts: New England Power Association; Western Massachusetts Electric Co.; 

and Worcester Electric Light Co.

New Hampshire: New England Power Association.

Vermont: New England Power Association.

DIVISION OF WORK

The stream-gaging work was done by the Water Resources Division of the Geological Survey under the direction of personnel shown in the preface. The data for stations in the 

several States were collected and prepared for publication in the district offices listed 

below.

State District office

Connecticut a/. ............

Maine b/. ..................

Massachusetts c_/...........

New Hampshire d/...........

Rhode Island ............... ....do

Vermont.................... .... do

Address

203 Federal Building. 

420 Statehouse. 

141 Milk Street.

Do.

Do.

Do.

a/ Except for Connecticut River at Thorapsonville.

b/ Including Androscoggin River near Errol and near Gorham, N H., Diamond River near Wentworth 

Location, N. H., and Saco River near Conway, N. H.

c/ Including Connecticut River at Thompsonville, Conn.

d/ Except for Androscoggin River near Errol and near Oorham, Diamond River near Wentworth Location, and Saco River near Conway.

Information of a more detailed nature than that published for most of the gaging stations given in this report is on file in the district offices listed above. Provisional 

records of discharge prior to publication, and other unpublished data concerning the 

gaging-statlon records may usually be obtained from the district office.

DEFINITION OF TERMS AND ABBREVIATIONS

The terms of streamflow and other hydrologic data, as used in this report, are defined 

as follows:

Cubic foot per second (cfs) Is the rate of discharge of a stream whose channel is 

1 square foot in cross-sectional area and whose average velocity is 1 foot per second.

Cubic feet per second per square mile (cfsm) is the average number of cubic feet of 

water flowing per second from each square mile of area drained, assuming that the runoff 

is distributed uniformly in time and area.

Runoff in inches is the depth to which an area would be covered if all the water draining from it in a given period were uniformly distributed on its surface. The term is 

used for comparing runoff with rainfall, which is also usually expressed in inches.

Acre-foot is the quantity of water required to cover an acre to the depth of 1 foot and 

is equivalent to 43,560 cubic feet. The term is commonly used in relation to storage for 

irrigation.

Cfs-day is the volume of water represented by a flow of 1 cubic foot per second for 24 

hours. It is equivalent to 86,400 cubic feet, 1.983471 acre-feet, or 646,317 gallons, 

and represents a runoff of 0.0372 inch from 1 square mile.
EXPLANATION OF DATA 3

Stage-discharge relation Is the relation between gage height and the amount of water 

flowing in a channel, expressed as volume per unit of time.

Control designates a feature downstream from the gage that determines the stage-discharge 

relation at the gage. This feature may be a natural constriction of the channel, a long 

reach of the channel, or an artificial structure.

Contents is the volume of water in a reservoir. Unless otherwise indicated, volume is 

computed on the basis of a level pool and does not include bank storage.

The drainage area of a stream .at a specified location is that area, measured in a horizontal plane, which is so enclosed by a topographic divide that direct surface runoff from 

precipitation normally would drain by gravity into the river above the specified point. 

Figures of drainage area given herein include all closed basins, or noncontributing areas, 

within the area unless otherwise noted.

WSP is used as an abbreviation for "Water-Supply Paper" in references to previously 

published reports.

DOWNSTREAM ORDER OF LISTING GAGING STATIONS

Beginning with the series of reports for the water year ending September 30, 1951, the 

order of listing gaging-station records was changed. In this report, in a downstream 

direction along the main stem all stations on a tributary entering above a main-stem station are listed before that station. If a tributary enters between two main-stem stations, 

it is listed between them. A similar order is followed in listing stations on first rank, 

second rank, and other ranks of tributaries. To indicate the rank of any tributary on 

which a gaging station is situated and the stream to which it is immediately tributary, 

each indention in the listing of gaging stations in the table of contents of this report 

represents one rank. This downstream order and system of indention show which gaging stations are on tributaries between any two stations on a main stem and the rank of the tributary on which each gaging station is situated.

The order of listing used before the publication of the 1951 report listed first all 

stations on the main stem from headwaters toward mouth, then all stations on the uppermost 

tributary to the main ste.m from the tributary's source to mouth, and then all stations 

from source to mouth of the uppermost tributary to the tributary.

EXPLANATION OF DATA

The base data collected at gaging stations consist of records of stage and measurements 

of discharge. In addition, observations of factors affecting the stage-discharge relation, 

weather records, and other information are used to supplement base data in determining the 

daily flow. The records of stage are obtained either from direct readings on a nonrecording gage or from a water-stage recorder that gives a continuous record of fluctuations. 

Measurements of discharge are made with a current meter by the general methods adopted by 

the Geological Survey on the basis of experience in stream gaging since 1888. These methods 

are described in Water-Supply Paper 888 and are also outlined in standard textbooks on the 

measurement of stream discharge. Typical structures in use at gaging stations are shown 

in figure 1.

Rating tables giving the discharge for any stage are prepared from stage-discharge relation curves defined by discharge measurements. If extensions to the rating curves are
SURFACE WATER SUPPLY, 1956, PART 1-A

A, OTTER BROOK NEAR KEENE, N. H.

B, PEQUABUCK RIVER AT FORESTVILLE, CONN.

C, MILL RIVER AT NORTHAMPTON, MASS. 

FIGURE 1. GAGING-STATION STRUCTURES.
necessary to define the extremes of discharge, they are made on the basis of indirect determinations of peak discharge (such as slope-area or contracted-opening determinations, 

computation of flow over dams or weirs, and by other methods), velocity-area studies, and 

logarithmic plotting. The application of the daily mean gage height to those rating 

tables gives the daily mean discharge, from which the monthly and the yearly mean discharge 

are computed. If the stage-discharge relation is subject to change because of frequent or 

continual change in the physical features that form the control , the daily mean discharge 

is determined by the shifting-control method, in which correction factors based on individual discharge measurements and notes by engineers and observers are used in applying 

the gage heights to the rating tables. If the stage-discharge relation for a station is 

temporarily changed by the presence of aquatic growth or debris on the control, the daily 

mean discharge is computed by what is essentially the shifting-control method.

At some gaging stations the stage-discharge relation is affected by backwater from 

reservoirs, tributary streams, or other sources. This necessitates the use of the slope 

method in which the slope or fall in a reach of the stream is a factor in determining 

discharge. Information requisite for determining die slope or fall is obtained by means 

of an auxiliary gage s^t at some distance from the base gage. At some stations the stagedischarge relation is affected by changing stage. If so, the rate of change in stage is 

used as a factor in the determination of discharge.

At most gaging stations in the northern part of the United States and at some in the 

mountainous regions of other parts the stage-discharge relation is affected by ice during 

the winter, and it becomes impossible to compute the discharge in the usual manner. Discharge for periods of ice effecr is computed on the basis of the gage-height record and 

occasional winter discharge measurements , consideration being given to the available information on temperature and precipitation, notes by gage observers and engineers, and 

comparable records of discharge for other stations in the same or nearby basins. If the 

stage-discharge relation is affected by ice, this information is given in a nore to the 

table. No mention is made of occasional days of ice effect If the degree of accuracy of 

daily records is not changed.

The data herein presented generally comprise & description of the station, a skeleton 

rating table, and a table showing the daily discharge and monthly and yearly discharge and 

runoff of the stream. Records are published for the water year which begins on October 1 

and end- on September 30. A. calendar for the water year 105.] is shown on page IV for the 

purpose of finding the day of the week for any date.

The description of the station gives the location, drainage area, records available, 

type and history of gages, average discharge, extremes of discharge, general remarks, and 

notations of revisions of the previously published record. The location of the gaging 

station and the drainage area are obtained from the most accurate maps available. River 

mileage, given under "Location'' for some stations, is that determined and used b;' the Corps 

of Engineers unless otherwise noted. Under ''Records available" are given the periods for 

which there are published records generally equivalent to those at present site. Under 

"Gage" are given the type of gage currently in use and the darum of the present gage above 

mean sea level, and a condensed history of the types, locations, and datums of previous 

gages used during the period of records available. Under ''Average discharge" is given the 

average discharge fur the number of years indicated. It is not given for stations having 

fewer than five complete years of record or for stations where changes in water development during the period of record cause the figure to have little significance. Under
6 " SURFACE WATER SUPPLY, 1956, PART 1-A

"Extremes" are given the maximum discharge and gage height; the minimum discharge if there 

is little or no regulation; the minimum daily discharge if there is extensive regulation 

(also the minimum discharge if useful); and the minimum gage height (unless it is of no 

importance). In the first paragraph, the data given are for the complete current water 

year unless otherwise specified. In the second paragraph, the data given are for the periods of record within the calendar year dates in the heading (not necessarily those for the 

complete years indicated by the heading dates). Reliable information concerning major 

floods that have occurred outside the period of record are given in the third or last paragraph under "Extremes." Unless otherwise qualified, the maximum discharge corresponds to 

the crest stage obtained by ase of a water-stage recorder, a crest-stage indicator, or a 

nonrecording gage res 3 at the time of the crest. If the maximum gage height did not occur 

at the same lime as the maximum discharge, it is given separately. Information pertaining 

to the accuracy of the records and conditions which affect the natural flow at the gaging 

station is given under "Remarks."

Previously published records of some stations have been found to be in error on the 

basis of data or information later obtained. Revisions of such records are usually published along with the current records in one of the annual reports. In order to make it 

easier to find such revised records, a paragraph headed "Revisions (water years)" has been 

added to the description of all stations for which revised records have been published. 

Listed therein are all the reports in which revisions have been published, each followed 

by the water years for which figures are revised in that report. In listing the water 

years only one number is given; for instance, 1933 stands for the water year October 1, 

193?, to September 30, 1933. If no daily, monthly, or annual figures of discharge are 

concerned in the revision, that fact is brought out by notations after the year dates as 

follows: "(Mj" r.iL-ans tnat only the instantaneous maximum discharge was revised; "(m)" 

that only the instantaneous minimum was revised; and "(P)" that only peak discharges were 

revised. If the drainage area has been revised, the report in which the revised figure 

was first published is given. It should be noted that for all stations for which cubic 

per second per square mile and runoff in inches are published, a revision of the drainage 

area necessitates corresponding revision of all figures based on the drainage area. Revised figures of cubic feet per second per square mile and runoff in inches resulting from 

a revision of the drainage area only are usually not published in the arnual series of 

reports .

Skeleton rating tables are published for all stations except those at which the dally 

discharge for the greater part of the open-water period was determined ty the shiftingcontrol method, the slope method, or other special methods involving an equivalent adjustment to the gage height of more than one-tenth foot. Skeleton rating tables are generally 

not published for stations on canals.

For stations equipped with water-stage recorders, except those on streams subject to 

sudden or rapid fluctuation, the daily table gives the discharge corresponding to the 

daily mean gage height. For stations subject to such fluctuation the daily mean gage 

height may not indicate the true daily mean discharge, which must be obtained by averaging 

the discharge for parts of the day or by using the discharge integrator, an instrument for 

obtaining the daily mean discharge from a continuous gage-height graph and containing, as 

an essential element, a curve representing the stage-discharge relation at the station. 

For stations equipped with nonrecording gages, the table cf daily discharge gives the
ACCURACY OF FIELD DATA AND COMPUTED RESULTS 7

discharge corresponding to once-daily readings of the gage, or to the mean of t^lce-dally 

readings, or to the mean gage height determined from gage-height graphs based en gage 

readings. For periods of rapidly changing stage, the dally mean discharge Is determined 

from gage-height graphs based on gage readings, the frequency of which is statel in the 

station description.

In the table of dally discharge, the figures for the maximum day and the minimum day for 

each month are underlined. If the.figure Is repeated, It Is underlined only on the first 

day of Its occurrence.

In the monthly summary below the dally table, the line headed "Total" gives the sum of 

the daily figures; it Is the total cfs-days for the month. The line headed "Mean" gives 

the average flow In cubic feet per second during the month. Runoff for the month may be 

expressed In cubic feet per second per square mile (line headed "Cfsm"), or in Inches 

(line headed "in."), or In acre-feet (line headed "Ac-ft"). Figures for cubic feet per 

second per square mile and runoff In inches are omitted If the drainage area Includes 

large noneontrlbutlng areas, or If the average annual rainfall over the drainag? basin is 

usually less than 20 Inches.

In the yearly summary below the monthly summary, the figures of maximum are the maximum 

dally discharges, not the momentary discharges when the water was at crest stag?. Likewise, the minimums in this summary are the minimum daily discharges.

Peak discharges and the times of their occurrence and corresponding gage heights of 

most stations are listed below the table of daily and monthly discharge. All independent 

peaks above the selected base are given. The base discharge, which is given in parentheses, is selected so that an average of about three peaks a year will be presented. 

Peak discharges are not published for canals, ditches, drains, or for any stream for which 

the peaks are subject to substantial control by man.

Footnotes to the table of daily discharge Indicate periods when discharge was computed 

or estimated by unusual or special methods during periods of no gage-height record and ice 

effect, or by other effects that reduce the degree of accuracy of the records. Days on 

Vfhlch discharge measurements were made are indicated by asterisk) and footnote unless they 

were made at frequent regular Intervals, In which Instance the general frequency of discharge measurements is given under "Remarks" in the station description.

For most gaging stations on lakes and reservoirs the data presented comprise a description of the station and a monthly summary table of stage and contents. For some reservoirs 

a table showing daily contents or stage is given. A skeleton table of capacity at given 

stages is published each year for all reservoirs for which records are published on a 

daily basis, but is not published for reservoirs for which only monthly data ar<3 given.

Discharge measurements and determinations of peak flows made at sites other than gaging 

stations are listed at the end of each report.

ACCURACY OF FIELD DATA AND. COMPUTED RESULTS

The accuracy of streamflow data depends primarily on (1) the stability of the stagedischarge relation or, if the control is unstable, the frequency of discharge measurements, 

and (2) the accuracy of observations of stage, measurements of discharge, and interpretation of records.

The station description states the degree of accuracy of the records. "Excellent" indicates that, in general, the error in the dally records is believed to be less tt<m 5 percent; "good," less than 10 percent; "fair," less than 15 percent; and "poor," probably
8 SURFACE WATER SUPPLY, 1956, PART 1-A

more than 15 percent. The records of monthly and yearly mean discharge and runoff are, 

iu general, more nearly accurate than the daily records.

Runoff at some stations, as indicated by the monthly mean, may vary widely from natural 

runoff, owing to diversion, consumption, regulation by storage, increase or decrease in 

evaporation due to artificial causes, or to other factors. For such stations, figures of 

cubic feet per second per square mile and runoff in inches are not published unless storage or diversion records are included to indicate the extent of the regulation or diversion, ur unless satisfactory adjustments can ue made for cnauges in contents of reservoirs 

or for other changes incident to use and control. Evaporation from a reservoir is not included in the adjustments fur chances in reservoir contents, unless it is so stated. Even 

at those stations where ..ilistments are made, large errors in computed runoff may occur 

when relatively large negative adjustments are made or when evaporation is large in comparison with the observed discharge.

Msr.y gaging stations on streams in the irrigated areas of the United States are situated 

above most ;f the diversions from those streams, and therefore the discharge recorded does 

not actually show the water supply available at the stations for further development, because water must first be supplied to existing irrigation systems

To facilitate publication of the annual series of reports, the area of the United States 

is divided into 14 parts whose boundaries coincide with certain natural drainage lines. 

Formerly, the results of streamflow measurements were published in 14 volumes, one for 

-£'-h of r;he 14 parts. Beginning with the reports for 1951, the records are published in 

1 'jlu'iirs , There being 2 volumes each for Parts 1, 2, 3, and 6. The boundaries of the 

various parrs sre elicited by the following list and the map in figure 2 .

Part 1. North Atlantic slope basins, in two volumes:

A, North Atlantic slope basins, Maine to Connecticut. 

E, North Atlantic slope basins, New York to York River.

2. South Atlantic slope and eastern Gulf of Mexico basins, in two volumes: 

A, South Atlantic slope basins, James River to Savannah River. 

E, South Atlantic slope and eastern Gulf of Mexico basins, Ogeechee River 

to Fearl River.

A

B, Cumberland and Tennessee River basins.

4. St. Lawrence River basin.

5. Hud3on Bay and upper Mississippi River basins.

6. Missouri River basin, in two volumes:

A, Missouri River basin above Sioux City, Iowa. 

B, Missouri River basin below Sioux City, Iowa.

7. Lower Mississippi River basin.

8. Western Gulf of Mexico basins.

9. Colorado River basin.

10. The Great Basin.

11. Pacific slope basins in California.

12. Pacific slope basins in Washington and upper Columbia River basin.

13. Snake River basin.

14. Pacific slope basins in Oregon and lower Columbia River basin.

Water-supply papers and other publications of the Geological Survey containing data on 

the water resources of the United States may be purchased or consulted as follows:

1. Copies may be purchased from the Superintendent of Documents, Government Printing 

Uffice, Washington 25, D. C., who will, on application, furnish lists giving prices. 

A list of Geological Survey publications may also be obtained by applying to the Director, 

Geological Survey, Washington, D. C.

2. Sets of the reports may be consulted in the libraries of the principal cities in 

the United States.
PUBLICATIONS
10 SURFACE WATER SUPPLY, 1956, PART 1-A

3. Sets are available for consultation in the offices of the Water Resources Division 

of the Geological Survey. Addresses of the offices in the area covered by this report are 

given on page 2.

Early records of the flow of streams in the United States are published in the reports 

listed below. In many of these reports records for years earlier than those indicated have 

been included for some streams.

Streamflow data for the years 1884-19O1, in reports of the Geological Survey 

(A = Annual Report; B = Bulletin)

Report

10th A, pt. 2

16th A, pt. 2

18th A, pt. 4 

WSP 15. ......

WSP 16 ....... 

19th A, pt. 4

WSP 35 to 39

WSP 47 to 52

WSP 75. ......

Character of data

Descriptive information only.

Descriptive Information only.

monthly discharge.

Descriptions, measurements, ratings, and monthly discharge. 

Descriptions, measurements, and gage heights of streams 

east of the Mississippi River, and Missouri River and 

tributaries above Kansas River. 

Descriptions, measurements, and gage heights of streams 

west of the Mississippi River, except Missouri River and 

tributaries above Kansas River. 

Descriptions, measurements, ratings, and monthly discharge.

the Mississippi River, and Missouri River and tributaries.

the Mississippi River, except Missouri River and tributaries .

Monthly discharge ................................ -. 

Year

1884 to June 3O, 1891.

1884-92.

1893-94.

1895.

1896.

1895-96. 

1897.

1897.

1897. 

1898.

1898.

1898.

1900.

1901.

Reports on surface-water supply containing records from 1899 to date for drainage 

basins in this report are listed below. The data for any particular gaging station will, 

in general, be found in the reports covering the years during which the station was maintained. Before 1951, records for the North Atlantic slope basins,"Maine to Connecticut, 

were included with those of the other rivers in the North Atlantic slope basins.

Numbers of water-supply papers containing results of stream measurements in North Atlantic slope 

basins, Maine to Connecticut, 1899-1956.

Year

1899

1900

1901

1902

1903

1904

1905

1906

1907-8

1909

1910

1911

WSP

35

47

65, 75

62

97

124

165

201

241

261

281

301

Year

1912

1913

1914

1915

1916

1917

1918

1919-20

1921

1922

1923

1924

WSP

321

351

381

401

431

451

471

501

521

541

561

581

Year

1925

1926

1927

1928

1929

1930

1931

1932

1933

1934

1935

1936

WSP

601

621

641

661

681 '

696

711

726

741

756

781

801

Year

1937

1938

1939

1940

1941

1942

1943

1944

1945

1946

1947

1948

WSP

821

851

871

891

921

951

971

1001

1031

1051

1081

1111

Year

1949

1950

1951

1952

1953

1954

1955

1956

WSP

1141

1171

1201

1231

1271

1331

1381

1431

The records at most of the stations discussed in these reports extend over many years. 

Discharge measurements at many points other than regular gaging stations have been made 

each year and are published at the end of each report. The streams and points of measurement are listed in the same order as the streams and gaging stations in the body of the 

report. An index of the records obtained before 1904 has been published in Water-Supply 

Paper 119.

A compilation of records for the area covered by this report through September 1950 

has been published as Water-Supply Paper 1301. That report contains a summary 

of monthly and annual discharges for all previously published records as well as some 

records not contained in the annual series of water-supply papers. All records were
RECORDS OF DISCHARGE COLLECTED BY AGENCIES OTHER THAN THE GEOLOGICAL SURVEY 11

reexamined and revised where warranted. Estimates of discharge were made to fill short 

gaps whenever practical.

Records of discharge have been published also in State reports. Most of these records 

are also compiled in Water-Supply Paper 1301; however, some of them are not contained in 

publications of the Geological Survey. The following table contains a list of these reports for the area covered by this report.

State reports containing compilations of records of discharge

State

Connecticut. . .

New Hampshire.

Period

19OO-19Z7 

1912 33

1889-1922 

1929 41

Report

Bull. 44, Water resources of Connecticut. . . . .

Annual and statistical report, vol. 12 .......

of Rhode Island.

Issued by

State Geological and Natural History Survey.

slon. 

Public Service Commission

Works . 

Rhode Island Development

Council .

Note. In addition to the records contained in the reports listed*above, the following States 

have Issued annual or biennial reports In which are contained records of discharge: Connecticut, 

Maine, and Rhode Island.

The reports listed in the foregoing tables contain the customary records of discharge 

collected during the systematic operation of gaging stations. Detailed information on the 

stage and discharge of many streams during major floods has been included in special reports on these floods published by the Geological Survey. The more recent of these special 

reports also contain other pertinent hydrologic information and analyses and compilations 

of data relating to earlier notable floods. The following list gives the numbers end 

titles of these reports:

Title

WSP 162: Destructive floods in the United States in 1905.

WSP 636-C: The New England flood of November 1927.

WSP 771: Floods in the United States, magnitude and frequency.

WSP 798: The floods of March 1936, Part 1, New England rivers.

WSP 836-A: Stages and flood dis-'iarg^ of the Connecticut River at Hartford, Conn.

WSP 847: Maximum discharges at stre m measurement stations through September 1938.

WSP 867: Hurricane floods of September 1938.

WSP 966: Minor floods of 1938 in North Atlantic States.

WSP 967-C: Flood of August 21, 1939, in town of Baldwin, Maine.

WSP 1137-1: Summary of floods in the United States during 1950.

RECORDS OF DISCHARGE COLLECTED BY AGENCIES OTHER THAN THE GEOLOGICAL SURVEY

The table below contains a list of gaging stations for the area covered by this report, 

at which records of discharge were collected during thi. water year October 1955 to September 1956 by agencies other than the Geological Survey. The records of these stations are 

not contained in publications of the Geological Survey, nor have they been published 

elsewhere.

Records of discharge collected by agencies other than the Geological Survey

Stream

Androscoggin River. ....

Penobscot River. .......

Do ..................

Penobscot River.

West River.. ...........

Location

Lewiston, Maine ............

old Town, Maine ............

West Buxton, Maine .........

Guilf ord , Conn .............

Period

.... 1929-56

.... 1915-56 

.... 1911-56

.... 1940-56

.... 1930-56

Collected by

Central Maine Power Co.

Bangor Hydro-Electric Co.

Do.

Do.
12 SURFACE WATER SUPPLY, 1956, PART 1-A

HYDROLOGIC CONDITIONS

A major flood occurred October 15-16 in Connecticut and Massachusetts. Peak discharges 

at several gaging stations were the highest in 25 years of record. A detailed report of 

this flood will be published in Water-Supply Paper 1420. Monthly mean discharge was 

record-high for the month at representative long-term stations in Connecticut and Massachusetts during October and November. During the first half of water year 1956 streamflow 

was deficient in parts of Maine, New Hampshire, and Vermont. Mean discharge was recordlow for October at one key gaging station in Maine; at another station in Maine it was 

record-low for December and for the water year. For two key gaging stations in the area 

covered by this report, a comparison of the mean discharge with the median for the 25-year 

period 1921-45 is shown in figure 3 below.

3000

Piscataquis River near Doyer-Foxcroft, Maine 

Drainage area, 297 sq mi.

Oct. Nov. 'Dec. Jan. Feb. Mar. April May June July Aug. Sept. The

Quinebaug River at Jewett City, Conn. 

Drainage area, 711 sq mi.

Oct. Nov. Dec. Jan. Feb. Mar. April May June July Aug. Sept. The

year 

Explanation

Median of monthly mean discharge for 25-year period 1921-45. 

Monthly mean discharge during water year 1956.

Figure 3. Comparison of discharge at two key gaging stations during 1956 water year with 

median discharge for 25-year period..
GAGING-STATION RECORDS 13

ST. JOHN'RIVER BASIN

St. John River at Ninemile Bridge, Maine

Location.--Lat 46°42'00", long 69°43'00", T. 12, R. 15, Aroostook County, on right bank 

about 0.1 mile downstream from Ninemile Brook, 0.4 mile downstream from highway bridge 

at Ninemile, and 11 miles northwest of Clayton Lake Post Office.

Drainage area. 1,290 sq mi, approximately.

Records available. November 1950 to September 1956.

Gage. Water-stage recorder. Datum of gage is 931.26 ft above mean sea level, adjustment 

of 1929.

Average discharge.--5 years (1951-56), 3,286 cfs.

Extremes. Maximum discharge during year, 14,600 cfs May 15 (gage height, £.99 ft); minimum daily, 158 cfs Mar. 29.

1950-56: Maximum discharge, 27,800 cfs Apr. 23, 1954 (gage height, £.81 ft); minimum, 59 cfs Sept. 5, 1953 (gage height, 0.25 ft).

Remarks.--Records excellent except those for period of ice effect, which are fair.

Rating table, water year 1955-56, except period of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

0.7 

1.0

1.5

1.6 

2.0 

2.5

149

240

551

882

1,430

3.0

4.0 

5.0 

6.0 

6.9

2,180

4,230

7,050

10,700

14,200

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

50

51

Total

Mean

Cfsm

In.

Ocb.

544

538

511

466

435

406

*579

579

412

401

554

516

282

263

244

226

216

220

255

267

255

244

286

295

512

554

412

425

396

358

350

10,757

347

0.269

0.31

Nov.

790

5.860

5,710

2,800

2,550

5,100

5,000

2,750

2,420

2,120

1,840

1,620

1,560

1,540

1,410

1,150

1,050

910

820

760

605

525

575

605

580

575

560

550

540

520_

45,575

1,512

1.17

1.30

Dec.

505

480

465

455

420

590

570

355

550

540

335

330

320

515

505

295

280

265

255

250

240

240

255

250

250

250

225

250

235

240

240

9,655

511

0.241

0.2,8

Jan.

255

225

215

210

205

200

200

210

220

220

220

225

250

280

380

560

560

545

540

560

550

530

520

*495

470

445

425

400

580

365

550

11,190

361

0.280

0.32

Feb.

350

350

315

310

500

290

280

275

270

265

260

255

250

245

240

235

230

250

225

220

*215

215

220

220

225

225

220

220

220

7,555

254

0.197

0.21

Calendar year 1955: Max 20,700 Mln 92

Mar.

220

215

215

210

210

205

200

194

190

190

186

186

180

176

170

170

170

170

170

166

166

*160

160

166

166

166

166

162

158

166

166

5,595

180

0.140

0.16

Apr.

162

162

160

160

170

180

198

220

250

500

350

455

700

1,100

1,600

2,200

2,600

3,000

3,810

4,590

5,800

5,610

5,010

4,590

4,520

4,410

5,510

7,550

10,400

11.700

87,067

2,902

2.25

2.51

May

12,400

12,500

12,000

11,200

10,200

11,000

11,800

10,500

8,450

7,550

8,030

8,580

9,700

12,400

14.100

14,000

12,200

9,650

7,540

6,510

5,950

5,120

6,770

9,950

7,980

5,880

4,460

4,410

5,010

4,440

4.010

275,490

8,822

6.84

7.89

June

4,930

5,120

4,590

4,410

5,200

5,060

4,130

5,550

*5,540

7.990

7,790

6,590

5,120

4,720

5,850

5,140

2,510

1,950

1,550

1,230

1.050

1,570

2,860

2,800

2,250

2,260

1,990

1,750

1,810

1,540

108,210

3,607

2.80

3.12

July

1,230

1,500

5.850

5,270

2,260

1,650

1,280

1,530

1,840

1,980

2,080

1,740

1,340

1,060

1,060

1,120

946

740

605

504

429

574

539

465

1,280

1,920

1,820

1,630

1,980

1,820

1,440

Aug.

1,100

900

766

657

551

466

396

363

330

415

1,090

2.250

2,080

1,570

1,530

1,500

1,100

828

674

635

801

740

595

491

429

412

412

418

596

539

295

45,060 24,507

1,454 791

1,13 0.613

1.30 0.71

Sept.

263

244

255

345

566

538

518

820

633

511

423

568

401

454

504

666

605

575

920

785

1,010

1,580

1,470

1,250

1,410

1.960

1,750

1,590

1,100

910

24,198

807

0.626

0.70

Mean 2,119 Cfsm 1.S4 In. 22.28

Water year 1955-56: Max 14,100 Mln 158 Mean 1,785 Cfsm 1.38 In. 18.81

Peak discharge (base, 10.000 cfs). --May 1 fa to 11 p.m.) 12.700 cfs (6.49 ft); May 15 (11 to 12

p.m.) 14,600 cfs (6.99 ft); May 24 (2 to 4 a.m.) 10,500 cfs (5.96 ft).

Discharge measurement made on this day. 

Note.--Stage-discharge relation affected by Ice Nov. 16 to Apr. 26.
14 ST. JOHN RIVER BASIN

St. John River at Dickey, Maine

Location. Lat 47°06'40", long 69 0 05'15", on right "bank at Dickey, Aroostook County,

0.6 mile downstream from Little Black River and 2.5 miles upstream from Allagash River.

Drainage area. 2,700 sq ml, approximately.

Records available.--July 1910 to November 1911 (published as "near Dickey"), September 

1946 to September 1956.

Gage. Water-stage recorder. Altitude of gage Is 590 ft (from topographic map). July 5, 

T910, to Nov. 21, 1911, staff gage at site 1,000 ft downstream at different datum.

Average discharge.--10 years (1946-56), 4,626 cfs.

Extremes. Maximum discharge during year, 27,400 cfs May 16 (gage height, 10.54 ft); maximum gage height, 10.83 ft Apr. 18 (backwater from Ice); minimum dally discharge, 

345 ofs Mar. 30.

1910-11, 1946-56: Maximum discharge, 68,700 cfs May 9, 1947 (gage height, 16.30 

ft); maximum gage height, 19.88 ft Mar. 29, 1953 (backwater from ice); minimum discharge, 129 cfs Sept. 17, 1948.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair.

Re_visions.--WSP 1141: Drainage area.

Rating table, water year 1955-56, except periods of Ice effect 

height, In feet, and discharge, In cubic feet per second)

1.6

1.7 

2.0 

2.5 

3.0

270

350

630

1,190

1,860

4.0 

5.0 

6.0 

8.0 

10.0

3,600

5,810

8,500

15,200

24,500

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13 

14

15

16

17

18

19

20

21

22

23

24

25

26

27 

28 

29

30

31

Total

Mean

Cfsm

In.

Oct.

1.090 

1,080

1,030

998

950

895

840

830

808

788

819

777

714 

640

600

540

530

530

530

530

530

580

550

530

610

630

693 

746 

808

808 

746

22,750

734

0.272

0.31

Nov.

777 

1,700

5.350

4,610

3,660

3,780

4,500

4,410

3,970

3,560

3,120

2,730

2,510 

2,370

2,320

2,030

1,920

1,680

1,540

1,410

1,220

975

235

788

1,230

1,070

950 

950 

940

Q1 ^

3J.O

67,720

2,257

0.836

0.93

Dec.

905 

8ST

895

885

860

830

8OO

735

715

695

680

670

660 

650

640

610

600

570

540

520

480

465

465

455

445

435

435 

445 

455 

455

445

19,335

624

0.231

0.27

Jan.

425 

410

39O

385

565

375

385

410

400

425

*425

445

475 

530

660

930

930

950

975

95O

915

885

840

790

735

725

680 

650 

620 

600

580

19,260

621

0.230

0.27

Feb.

560

sny

530

520

500

490

480

475

475

475

475

465

465 

455

455

445

435

435

425

425

435

*445

445

445

445

445

435 

435 

435

13,490

465

0.172

0.19

Mar.

435

155

425

420

420

410

410

400

400

390

390

385

375 

365

365

360

360

360

360

360

36O

350

350

*350

350

360

360 

360 

350

11,710

378

0.140

0.16

Apr.

f§

350

365

390

445

560

695

895

1,260

1,590

1,850

2,750 

3,100

3,600

4,010

4,690

5,710

6,990

12,800

13,000

12,300

10,700

9,640

8,680

8,170

8,230 

10,400 

14,700 

17.900

166,470

5,549

2.06

2.30

May

19,300 

19,600

19,300

*18,700

17,700

18,300

20,600

19,000

15,700

13,600

13,900

15.3OO

18,600 

24,800

26.800

26,800

23,100

18,200

14,200

12,100

11,300

10,000

10,900

16,000

14,300

11,100

8,800 

8.380 

10,500

9,910

8,440

495,230

15,980

5.92

6.82

June

8,350 

9,880

9,490

8,590

9,130

9,450

8,060

6,810

6,580

10,000

11.200

10,800

9,880 

8,680

8,110

7,910

6,860

5,260

4,180

*3,38O

3,030

3,120

3,840

5.26O

4,720

4,220

4,070 

3,540 

3,100 

3.010

200,490

6,683

2.48

2.77

July

2,730 

2,680

3,100

5. 080

4,120

3,100

2,490

2.14O

2,360

2,820

3,190

3,230

2,760 

2,370

2,600

2.56O

2,420

1,950

1,610

1,370

1,140

1,010

950

917

1,140

1,940

2,870 

2,850 

2,660 2 800

2)540

75,497

2,435

0.902

1.04

Aug.

2,140 

1,760

1,490

1,290

1,150

1,020

895

798

766

974

1,110

1,690

*2,240

m

2.12O

2,120

1,690

1,400

1,190

1,060

1,140

1,180

1,050

939

862

766 

746 

714 

682

630

41,182

1,328

0.492

0.57

Sept.

550 

511

560

651

620

766

1,020

1,190

1,310

1,200

998

873

840 

851

986

1,090

1,150

1,170

1,200

1,520

2,170

2,940

2,600

2,360

2,300

2,650

5.100 

2,500 

2,100

1,700

43,476

1,449

0.537

0.60

Calendar year 1955s Max 42,300 Mln 350 Mean 4,433 Cfam 1.64 In. 22.31

Water year 1955-56: Max 26,800 Mln 345 Mean 3,215 Cfsm 1.19 In. 16.23

Peak discharge (base, 27,000cfs) . May 16 (1 to 4 a.m.) 27.400 cfs (10.54 ft). 

* Discharge measurement made on this day. 

Note.--No gage-height record Sept. 25-30; discharge estimated on basis of records for nearby stations. Stage-discharge relation affected by Ice Nov. 19-22, Nov. 28 to Apr. 19.
ST. JOHN RIVER BASIN 15

Allagash River near Allagash, Maine

Location. Lat 47°04'15", long 69°04 I 50", on left bank a quarter of a mile upstream from 

Allagash Inn and 3 miles upstream from mouth and village of Allagash, Arcostook County.

Drainage area.--1,250 sq mi, approximately (not including about 240 sq mi drained by Chamberlain Lake through Telos Canal).

Records available.--July 1910 to November 1911, September 1931 to September 1956.

Gage.--Water-stage recorder. Datura of gage is 604.6 ft above mean sea level, datum of 

1929. July 1910 to November 1911, staff gage at site 3 miles downstream at different 

datum.

Average discharge.--25 years, (1931-56), 1,916 cfs.

Extremes. Maximum discharge during year, 9,370 cfs May 16 (gage height, 7.30 ft); minimum daily, 154 cfs Mar. 8-10, 29.

1910-11, 1931-56: Maximum discharge, 23,400 cfs May 5, 1933 (gage height, 11.32 

ft); maximum gage height, 13.14 ft May 1, 1939 (ice Jam); minimum daily discharge, 

91 cfs Mar. 9-15, 1948.

Remarks.--Records excellent except those for period of ice effect, which are fair. 

Revisions (water years). WSP 726: Drainage area. WSP 1231: 1911.

Rating table, water year 1955-56, except period of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

1.7 

2.0 

2.4 

3.0

3.5

137

250

480

990

1,590

4.0 

5.0 

6.0 

7.0 

7.3

2,300

4,000

6,090

8,540

9,370

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cf am

In.

Oct.

509 

480

439

412

406

382

359

365

359

353

348

315

299

289

284

265

255

274

299

304

299

294

284

270

289

299

299

294

279

265 

270

10,138

327

0.262

0.30

Nov.

284

310

337

348

359

4OO

426

466

480

480

480

473

460

439

419

400

412

400

420

406

390

375

400

380

365

365

395

400

410

400

12,079

403

0.322

0.36

Dec.

1

375 

355

350

350

360

395

400

405

400

400

390

375

365

340

335

300

290

285

280

260

235

220

205

190

182

170

176

186

186

182

170

9,112

294

0.235

0.27

Jan.

170 

164

160

164

170

192

200

205

210

210

*240

270

365

425

430

420

420

410

410

400

390

375

355

340

335

320

310

310

290

275 

270

9,205

297

0.238

0.27

Feb.

265 

260

255

250

250

245

240

225

225

210

192

182

190

210

225

215

210

210

210

215

220

*220

215

210

205

205

205

205

205

6,374

220

0.176

0.19

Mar.

200 

186

198

198

192

192

170

154

154

154

168

170

176

178

178

182

182

182

186

200

200

200

200

*200

200

186

170

168

154

158 

178

5,614

181

0.145

0.17

Apr.

210 

250

300

380

480

590

715

845

970

1,080

1,200

1,310

1,400

1,500

1,580

1,710

1,860

1,960

2,110

2,060

2,030

2,020

1,970

1,990

1,960

2,080

2,040

2,200

2,580

3.000

44,380

1,479

1.18

1.32

May

3.520 

3, 650

4,020

*4,250

4,410

5,320

5,690

5,520

5,170

5,130

5,430

5,690

6,820

8,380

9,090

9.250

8,680

7,810

7,260

7.P40

6,540

6,OCO

7,320

8,180

6,910

6,220

 5,740

5,740

5,760

5,210 

4,940

190,470

6,144

4.92

5.67

June

5,000 

5.520

5,130

4,940

4,790

4,450

4,080

3,900

3,810

3,720

3,670

3,610

3,920

3,610

3,430

3,680

3,430

2,880

2,580

*2,580

2,500

2,530

2,790

2,580

2,320

2,380

2,060

1,870

1,730

1.650

100,320

3,344

2.68

2.99

Calendar year 1955- Max 15,700 Hin 170 Mean 1,858 Cfsm 1.49

July

1,560 

1,590

1,510

1,420

1,330

1,250

1,190

1,120

1,020

990

930

836

748

748

800

766

689

631

584

551

487

480

480

480

480

531

509

480

480

480 

421

25,603

826

0.661

0.76

Aug.

466

516

495

480

473

466

446

426

406

432

538

546

487

495

*531

524

473

459

42 S

426

412

406

388

388

419

453

412

394

388

 x cq ooy 

353

13,863

447

0.358

0.41

Sept.

353 

359

388

377

365

359

419

487

446

406

388

388

394

406

412

388

371

377

394

412

516

623

53T

480

453

460

446

419

412

400

12,629

421

0.337

0.38

In. 20.17

Water year 1955-56: Max 9,230 Min 154 Mean 1,202 Cfsm 0.962 In. 13.09

Peak discharge (base. 5.700 cfs). --May 16 (1 to 6 a.m.) 9.370 cfs (7.30 f t) ! Mav 23 (11:30 D.m.)

8,940 cfs (7.15 ft) .

* Discharge measurement made on this day.

Note. Stage-dlacharge relation affected by Ice Nov. 21 to Apr. 20 (no gage-height record Dec. 20

to Jan. 11); discharge estimated on basis of 1 discharge measurement and records of nearby station.
ST. JOHN RIVER BASIN

St. Francis River at outlet of Glazier Lake, near Connors, New Bririswick 

(International gaging station)

Location.--Lat 47°12'25", long 68°57'25", on left bank at outlet of Glacier Lake, 4 miles 

upstream from mouth and 6.5 miles west of Connors, Madawaska County.

Drainage area.--496 sq mi.

Records available.--October 1951 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 550 ft (from International Boundary 

Map).

Average discharge.--5 years, 915 cfs.

Extremes.--Maximum discharge during year, 4,110 cfs May 17 (gage height, 7.66 ft)- minimum, 99 cfs Mar. 30 (gage height, 2.205 ft).

1951-56: Maximum discharge, 8,770 cfs May 6, 1955 (gage height, 11.53 ft); minimum, 

that of Mar. 30, 1956.

Remarks.--Records excellent. Lake area above station has not yet been developed for 

storage.

Cooperation.--This station is one of the international gaging stations maintained by Canada under agreement with the United states.

Rating table, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

119

170

334

551

4.0

5.0 

7.0 

7.7

827

1,530

3,400

4,150

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsra

In.

Oct.

453

406

372

345

327

304

283

273

255

242

232

223

208

202

196

190

184

184

176

173

167

164

162

156

162

150

148

145

140

137 

137

6,896

222

0.448

0.52

Nov.

142

145

153

164

182

190

196

214

226

242

255

266

269

269

273

259

262

252

239

226

220

211

193

190

187

184

176

167

170

167

6,289

210

0.423

0.47

Dec.

156

148

148

142

145

142

142

140

137

135

130

128

124

124

124

126

124

121

119

119

119

119

117

115

119

117

117

115

113

115

111

3,951

127

0.256

0.30

Jan.

Ill

111

106

106

104

102

100

119

119

*121

128

135

156

173

193

199

205

211

214

214

214

214

214

217

217

214

202

199

199

193

184

5,194

168

0.339

0.39

Feb.

176

170

170

170

167

162

158

164

156

156

148

148

156

145

145

142

142

142

142

140

140

137

135

133

131

133

131

128

121

4,288

148

0.298

0.32

Mar.

119

119

119

119

119

119

117

119

124

121

119

119

119

119

117

117

US

115

113

108

106

104

102

*102

102

102

102

102

100

100

111

3,489

113

0.228

0.26

Apr.

113

113

109

115

119

121

131

148

190

229

279

312

338

372

418

502

627

833

,140

,430

,640

,750

,760

,710

,690

,680

,700

,860

,130

;560

26,119

871

1.76

1.96

May

2,780

2,950

2,980

2,980

2,980

3,000

3,060

3,070

2,960

2,780

2,640

2,600

2,790

3,220

3,820

4.050

4,040

3,760

3,420

3,080

2,730

2,490

2,330

2,240

2,200

2,080

1,920

1,790

1,700

1.690

1,690

85,820

2,768

5.58

6.43

June

1,690

1,770

1,880

1.940

1,900

1,800

1,680

1 , 550

1,450

1,360

1,300

1,250

1,210

1,160

1,130

1,110

1,120

1,100

1,050

*957

889

858

815

759

714

681

622

586

546

507

35,384

1,179

2.38

2.65

July

480

480

457

436

410

335

372

3S1

342

342

334

334

319

315

334

323

315

304

297

280

262

251

246

242

262

266

273

361

414

436 

431

10,664

244

0.694

0.80

Aug.

418

401

372

345

323

301

280

262

249

242

239

229

220

217

*214

211

208

205

202

199

193

187

173

167

170

167

162

164

150

145 

142

7,157

231

0.466

0.54

Sept.

142

140

142

142

140

135

142

142

142

142

148

156

164

170

176

176

179

193

190

193

211

223

255

290

312

323

315

301

293

273

5,950

198

0.399

0.45

Calendar year 1955: Max 8,730 Min 102 Mean 941 Cfsra 1.90 In. 25.76

Water year 1955-56: Max 4,050 Min 100 Mean 550 Cfsm 1.11 In. 15.09

Discharge measurement made this day.
ST. JOHN RIVER BASIN 17

Fish River near Fort Kent, Maine

Location.--!- at 47°14'15", long 68°34 I 55", on right bank 300 ft upstream from highway

bridge at Fort Kent Mills, 2 miles upstream from mouth, and 2 miles south of Fort Kent, 

Aroostook County.

Drainage area.--871 sq mi.

Records available.--July 1903 to December 1908, May to November 1911, September 1929 to 

September 1956. Published as "at Wallagrass" 1903-8, 1911.

Gage. Water-stage recorder. Datum of gage is 511.38 ft above mean sea level, datum of 

1929. July 1903 to December 1908 and May to November 1911, chain gage at site 10 miles 

upstream at different datum.

Average discharge. 33 years (1903-8, 1929-56), 1,354 cfs.

Extremes.--Maximum discharge during year, 4,890 cfs May 15 (gage heignt, 6.92 ft); minimum 

daily, 84 cfs Jan. 3.

1903-8, 1911, 1929-56: Maximum discharge, 11,000 cfs Apr. 26, 1934, May 8, 1947; 

maximum gage height, 10.50 ft Apr. 26, 1934; minimum discharge, 46 cfs Oct. 9, 10, 1950.

Remarks. Records excellent except those for period of ice effect, which are fair. Large 

lake area above station has not yet been developed for storage.

Revisions. --WSP 1001: Drainage area.

Rating table, water year 1955-56, except period of ice effect (gage 

height, in feet, and discharge, in cubic feet per second]

2.2

2.3 

2.5 

2.7 

3.0

73

94

145

203

332

3.5 

4.0 

5.0 

6.0 

7.4

604

980

2,000

3,420

5,660

Discharge, in cubic feet per second, water year October 1955 to September 195f

Day

1

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

217

2O2 

199

199

192

185

192

189

172

166

163

163

160

160

151

145

142

154

157

151

145

140

137

140

142

137

137

129

T29~ 126

129

4,950

160

0.184

0.21

Nov.

132

132

134

134

137

157

166

T66

166

163

160

160

157

151

145

140

122

116

110

112

122

120

113

110

116

120

120

118

112

12

4,015

134

0.154

0.17

Dec.

94

94 

94

106

132

134

130

130

122

112

110

110

112

110

104

99

96

90

92

94

94

94

94

94

88

86

94

99

100

99

92

3,199

103

0.118

0.14

Jan.

90

88 

84

m

94

108

112

118

118

*122

122

122

162

230

255

265 "255

240

240

215

210

210

210

210

200

200

200

192

190

186

182

5,318

172

0.197

0.23

Feb.

176

176 

172

172

170

158

158

146

146

146

142

142

140

134

132

132

132

130

126

126

126

*122

122

122

122

122

120

120

118

______

4,050

140

0.161

0.17

Mar.

130

126 

122

120

118

118

118

118

118

118

120

122

126

130

138

140

146

150

162

170

176

190

*200

21O

210

215

215

220

230

240

245

4,961

160

0.184

0.21

Apr.

245

245 

245

265

280

295

325

340

370

400

425

470

524

547

604

750

1,190

1,460

1,630

1,820

2,030

2,250

2,390

2,480

2,620

2,690

2,830

3,080

3,240

5.560

39,600

1,320

1.52

1.70

May

3,760

3,880 

4,030

4,140

*4,200

.4,350

4,430

4,400

4,350

4,280

4,270

4,240

4,510

4,750

4.840

4,780

4,650

4,520

4,360

4,160

4,000

3,790

3,820

3,820

3,680

 3,560

3,420

3,520

3,550

3,470

3J.39Q

126,920

4,094

4.70

5.42

June

3,310

3,290 

3,210

3,150

3,070

2,900

2,790

2,730

2,630

2,490

2,420

2,210

2,230

2,160

2,170

2,090

2,010

1,890

*1,810

1,730

1,660

1,640

1,570

1,500

1,450

1,380

1,330

1,260

1,190

1,140

64,410

2,147

2.46

2.74

Calendar year 1955: Max 10,900 Mln 86 Mean 1,375 Cfsm 1.58

July

1,130

1,190 

1,110

1,020

972

913

896

888

880

849

817

757

735

742

810

735

678

658

611

598

560

541

541

572

685

817

554

541

506

478

440

23,024

743

0.853

0.98

Aug.

434

TO 

384

374

365

346

332

328

323

337

346

332

319

346

389

*360

332

328

319

301

288

276

272

280

297

288

280

259

247

239

232

9,967

322

0.370

C.43

Sept.

232

TZ8 

224

220

213

209

220

213

209

202

199

199

199

199

185

175

172

T75

172

182

220

209

195

189

185

185

178

178

175

175

5,916

197

0.226

0.25

In. 21.44

Water year 1955-56: Max 4,840 Min 84 Mean 810 Cfsm 0.930 In. 12.65

* Discharge measurement made on this day. 

Note.--Stage-discharge relation affected 

Jan. 3-10).

lay.

;ed by ice Nov. 17 to Apr. 12 (no gage-height record
18 ST. JOHN RIVER BASIN

St. John River below Fish River, at Fort Kent, Maine 

(International gaging station)

Location.--Lat 47°15'25", long 68°35'35", on right bank at Fort Kent, Arocstook County, 

a quarter of a mile downstream from Fish River.

Drainage area.--5,690 sq mi, approximately (not including about 240 sq mi drained by 

Chamberlain Lake through Telos Canal).

Records available.--October 1926 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 488.9 ft above mean sea level, datum of 1929. 

Prior to Oct. 10, 1933, staff gage on opposite bank at same datum.

Average discharge.--30 years, 9,556 ofs.

Extremes.--Maximum discharge during year, 48,300 cfs May 16 (gage height, 15.22 ft); minimum daily, 790 cfs Apr. 2, 3 (during ice effect period); minimum gage height, 1.54 ft 

Oct. 24, 25.

1926-56: Maximum discharge, 121,000 cfs May 5, 1933 (gage height, 25.1 ft); minimum 

daily, 510 cfs Mar. 13-15, 1948.

Remarks. Records excellent except those for periods of ice effect, which are fair.

Cooperation.--This station is one of the international gaging stations maintained by the 

United States under agreement with Canada.

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, In cubic feet per second)

Oct. 1 to Apr. 22 Apr. 23 to Sept. 30

0.8 

1.0 

1.2 

1.5 

2.0 

3.0

755

895

1,040

1,270

1,710

2,800

4.0 

5.0 

6.5 

8.0 

9.5

4,300

6,200

9,640

14,200

19,700

5.0

6-5

8.0

10.0

6,200

10,100

14,900

22,900

12.0 32.0CO

14.0 42,OCO

15.3 48,SCO

Note. Same as preceding table 

below 5.0 ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2 

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Oct.

2,410

2 , 500 

2,360

2,230 

2,180

2,060

1,990

1,910

1,850

1,800

1,790

1,730

1,660

1,580

1,490

1,410

1,370

1,370

1,370

1,380

1,380

1,370

1,360 

1.330

1,350

1,370

1,440

1,450

1,520

1,530

1,510

52,050

1,679

0.295

0.34

Nov.

1,510

1,580 

3,730

5,860 

5,070

4,530

5,140

5,600

5,370

4,950

4,520

4,130

3,810

3,540

3,480

3,260

3,070

2,400

2,000

2,080

2,000

1,750

1,580 

1,580

1,500

1,500

1,510

1,490

1,440

1.580

91,360

3,045

0.535

0.60

Dec .

1,340

1,420 

1,500

1,560 T,s6o

1,480

1,510

1,380

1,260

1,280

1,340

1,330

1,320

1,300

1,460

1,340

1,240

1,220

1,170

1,100

1,020

1,030

1,050 

1,050

1,000

960

1,040

1,080

1,000

935 9"TO

38,185

1,232

0.217

0.25

Jan.

900

855 

810

805

840

S90

950

960

950

*970

1,030

1,100

1,260

1,500

1,840

1,800

1,920

1,980

1,870

1,920

1,900

1,840

1,780 

1,720

1,620

1,550

1,500

1,420

1,370

1,320

1 f 230

42,450

1,369

0.241

0.28

Feb.

1,250

1,200 

1,160

1,120 

1,120

1,120

1,100

1,060

1,040

1,020

1,020

1,020

1,010

1,000

990

980

970

980

990

980

*970

980

980 

980

970

970

960

960

945.

29,845

1,029

0.181

0.20

Mar.

IJSO" 930

930

930 

925

915

910

900

880

875

875

880

875

865

865

865

865

875

875

880

880

880

*880 

880

890

880

875

860

860

855

830

27,415

884

0.155

0.18

Apr.

795

790

790

890

1,000

1,200

1,500

1,900

2,900

3,050

3,240

3,600

4,200

4,990

5,900

7,010

7,920

9,300

14,800

17,100

16,700

19,300

18,900 

18,000

17,000

16,400

16,600

18,900

23,500

29,000

287,175

9,572

1.68

1.87

May

31,800

33 , 200 

33,600

33,400 

*32,600

33,400

36,400

35,900

32,400

29,200

28,600

30,400

34,600

42,700

46,800

47.800

44^ 400

39,000

33,500

29,600

27,400

25,200

25,400 

31,800

31,000

26,100

23,000

21,800

22,900

ElllOO

987,900

31,870

5.60

6.46

June

20,200

21,800 

22,500

21,200 

20,800

20,900

19,500

17,500

16,200

17,700

20,500

20,400

19,500

17,700

16,800

16,500

15,700

13,200

*11,400

9,980

8,960

8,720

9,470 

10,400

10, 500

9,800

9,050

8,300

7,300

6. 900

449,180

14,370

2.63

2.93

July

6,560

6.6CO 

6,4CO

7,380 

7,790

6,660

5,780

5,180

4,880

5,200

5,450

5,720

5,280

4,770

4,880

4,900

4,620

4,130

3,620

3,170

2,840

2,610

2,510 

2,500 27515

2,970

4,070

4,620

4,460

4,520

4,270

147,150

4,747

0.834:

0.93

Aug.

3,920

3,480 

3,120

2,840 

2,600

2,420

2,250

2,100

1,980

2,050

2,310

2,510

3,520

4,110

3,910

*3,470

3,460

3,160

2,780

2,440

2,220

2,090

2,130 

2,100

2,080

1,990

1,960

1,830

1,740

"L f 660

1,650

79,860

2,576

0.453

0.52

Sept.

1,540

1.49Q 

1,520

1,540 

1,600

1,500

1,790

2,010

2,160

2,250

2,030

1,860

1,300

1,820

1,890

1,960

1,990

2,100

2,030

2,180

2,750

3,600

4,220 

4,080

3,640

3,520

3,680

3,760

3,350

2,970

72,430

2,414

0.424

0.47

Calendar year 1955: Max 83,900 Min 935 Mean 9,152 Cfsm 1.61 In, 21.83

Water year 1955-56: Max 47,800 Mln 790 Mean 6,298 Cfsm 1.11 In. 15.06

Peak discharge (base, 45,000 cfs). --May 16 £ to 9 a.m.) 48,300 cfs (15.22 ft).
ST. JOHN RIVER BASIN 19 

Machias River near Ashland, Maine

Location. Lat 46°37'40", long 68°26'05", 'on right bank just upstream from highway bridge, 

0.8 mile upstream from mouth and lj miles west of Ashland, Aroostook County.

Drainage area. 328 sq mi.

Records available.--June 1951 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 535 ft(from topographic map).

Average discharge.--5 years, 598 cfs.

Extremes.--Maximum discharge during year, 3,570 cfs May 15 (gage height, 4.67 ft); maximum 

gage height, 5.22 ft Apr. 19 (backwater from ice); minimum daily discharge, 18 cfs Jan. 5.

1951-56: Maximum discharge, 16,600 cfs June 29, 1954 (gage height, 11.94 ft), from 

rating curve extended above 6,100 cfs by logarithmic plotting; minimum, 5.4 cfs Sept. 17, 

1952 (gage height, 0.64 ft); minimum gage height, 0.38 ft Sept. 18, 19, 1955.

Remarks. Records excellent except those for period of ice effect, which are fair. Flow 

partly regulated by Machias and Rowe Lakes (combined capacity, about 280,000,000 cu ft) 

used for log driving.

Rating tables, water year 1955-56, except period of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Apr. 20 Apr. 21 to Sept. 30

.5

.7

1.0

11

21

34

71

157

1.3 

1.6 

2.0 

2.4

280

436

685

985

1.0 

1.3 

1.6

29

62

144

268

430

2.0 

2.5 

3.0 

4.0 

4.6

685

1,070

1,540

2,570

3,470

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Iota]

Mean

Cf sm

In.

Oct.

34

34

34

34

34

34

34

34

34

34

36

36

37

39

39

39

39

92

372

280

195

118

78

49

73

63

39

85

56

50

50

2,205

71.1

-

-

Nov.

50

5S

50

50

56

65

83

85

85

83

81

81

78

76

76

71

67

56

58

67

108

140

158

TBT5

128

104

93

81

71

67

2,468

82.3

-

-

Dec.

67

65

58

56

56

58

63

67

69

11

71

71

71

71

71

71

71

71

71

69

69

65

56

50

48

42

36

34

33

25

ZZ

1,818

58.6

-

-

Jan.

21

20

20

19

18

19

20

21

26

34

42

*60

78

120

176

235

255

280

290

295

300

29ft

280

275

270

260

250

235

235

235

235

4,914

159

-

-

Feb.

225

1?T5

205

205

196

196

190

180

166

158

150

130

118

110

95

93

90

83

73

71

67

60

60

*58

58

56

54

52

52

3,466

120

-

-

Calendar year 1955: Max 5,370 Min 20

Mar.

52

W

50

50

50

48

48

48

48

48

48

48

48

48

48

48

48

48

48

48

47

*44

44

44

44

42

42

42

47

50

52

1,470

47.4

-

-

Apr.

58

71

83

95

120

150

176

215

290

435

500

555

620

670

685

755

850

970

985

850

734

706

692

672

699

1,080

1,220

1,340

1,480

1.660

19,416

647

_

-

Mean 478

May

1,830

1,940

2,050

*2,060

2,010

.2,180

2,350

2,360

2,110

1,820

1,500

1,690

2,120

2,560

3,570

3,230

2,620

1,890

1,520

808

1,120

929

1,270

1,940

1,900

1,430

1,220

1,180

1,410

1,290

1,110

56,817

1,833

_

-

June

1,230

1,020

1,080

1,560

830

1,010

775

835

765

565

855

590

940

750

730

650

349

545

*495

646

445

410

581

595

275

350

350

3~SO" 162

450

19,958

665

_

-

Cfsm 1.46

July

305

200

380

530

455

305

375

290

400

355

335

285

87

495

134

335

390

360

415

585

495

49

535

345

250

200

178

164

100

106

106

9,514

307

-

Aug.

~82 103

92

82

80

8?

77

69

66

75

84

84

75

*75

77

*73

64

607"

73

71

64

64,

73

100

10T ' 9s

87

77

73

6 3

2,420

78.1

-

Sept.

64

71

98

95

44

43

124

100

84

75

71

69

66

S6

64

62

64

69

69

80

137

162

158

155

148

144

137

128

114

103

2,864

95.5

-

In. 19.78

Water year 1955-56: Max 3,370 Min 18 Mean 348 Cfsm 1.06 In. 14.43

Peak discharge (base, 3.200 cfs).--May 15 (5 p.m.) 3,570 cfs (4.67 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 16 to Apr. 20.
ST. JOHN RIVER BASIN

Aroosfcook River at Washburn, Maine

Location. Lat 46°46 I 35", long 66°09'30", on right bank just upstream from Bangor and 

Aroostook Railroad bridge, 0.1 mile downstream from Salmon Brook and 1 mile south of 

railroad station at Washburn, Aroostook County.

Drainage area. --1,620 sq mi, approximately.

Records available. August 1930 to September 1956.

Gage . --Water-stage recorder. Datum of gage is 436.40 ft above mean sea level, datum of 

1929. Prior to Oct. 1, 1948, at datum 2.0 ft higher.

Average discharge .--26 years, 2,567 cfs (unadjusted)

Extremes .--Maximum discharge during year, 12,500 cfs May 16 (gage height, 7.44 ft); maxi-

); 

Dec. 6-8, 11, 12

. , , . 

mum gage height, 8.03 ft Apr. 18 (backwater from ice); minimum daily discharge, 110 cfs

1930-56: Maximum discharge, 37,800 cfs Mar. 22, 1936 (gage height, 11.80 ft); maximum gage height, 15.78 ft Apr. 6, 1951 (backwater from ice); minimum daily discharge, 

75 cfs Feb. 13-15, 1948.

Remarks . --Records excellent except those for period of ice effect, which are fair. Plow 

partly regulated by Squapan Lake (capacity, 2,554,000,000 cu ft) and by Millinocket Lake 

(capacity, 1,007,000,000 cu ft) used for power, and Machias and Rowe Lakes (combined 

capacity, about 280,000,000 cu ft, corrected) used for log driving.

Revisions (water years ). WSP 951: 1935. WSP 1301: 1933-50 (adjusted monthly runoff ).

Rating tables, water year 1955-56, except period of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Apr. 21 Apr. 22 to Sept. 3O

1.4

1.6 160

260

390

2.5 

3.0 

4.0 

5.0

820

1,440

3,130

5,300

1.7

Note.--Same as following 

table above 5.0 ft.

250

2.0 455

2.5 930

3.0 1,560

4.0 3,160

5.0 5,300

6.0 7,990

7.0 11,000

7.4 12,400

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

(t)

Oct.

320

320

327

314

302

278

266

260

250

235

210

205

200

185

220

230

205

185

272

453

369

296

230

195

235

250

369

369

245 

£40

195

8,230

265

-4

Nov.

185

180

175

180

190

230

260

302

314

302

327 2~9~6

272

266

245

215

205

196

205

225

240

225

200

205

166

156

152

148

140 

156

6,538

218

-41

Dee.

132

124

116

112

112

110

TIo

110

112

112

110

110

128

128

186

225

270

310

320

310

295

270

250

230

210

190

176

160

148 

136

124

5,436

175

-136

Jan.

120

124

132

128

120

136

132

160

*370

500

720

980

1,230

1,480

1,620

1,740

1,800

1,770

1,700

1,640

1,520

1,430

1,340

1,260

1,170

1,100

1,030

980

930 

920

900

29,182

941

-19

Feb.

890

880

880

870

860

860

850

850

850

850

850

840

820

800

780

730

700

675

640

605

565

530

*515

500

485

475

470

460

455

20,535

708

-290

Mar.

445

445

440

43O

440

475

485

490

490

490

490

490

485

475

445

425

410

390

370

350

320

295

*285

280

270

270

270

265

265 

265

260

12,005

387

-78

Apr.

260

260

265

280

320

390

485

585

720

870

1,040

1,260

1,520

1,820

2,320

2,940

4,120

5,560

7,180

9,110

9,940

9,460

8,910

8,400

7,860

7,480

7,370

7,500

7,940 

8,790

124,955

4,165

+389

May

10,100

10,000

*10,000

9,700

9,100

9,400

10,100

9,850

8,880

8,020

7,560

7,420

8,430

9,850

11,700

12,400

11,200

9,460

8,070

6,910

5,960

5,200

5,480

6,940

6,800

5,800

4,910

5,200

6,070 

5,880

5,030

251,420

8,110

+485

June

4,810

4,390

4,060

4,230

3,710

3,320

3,070

2,790

2,810

2,710

3,300

3,050

3,500

3,480

2,960

2,830

2,380

2,100

2,000

1,530

*1,530

1,170

1,560

1,630

1,420

1,340

1,290

1,060

1.030 

1,090

76,150

2,538

+116

July

1,060

974

1,460

1,830

T7450

1,280

1,150

996

1,010

1,110

1,280

1,250

1,140

919

1,090

820

908

820

730

810

820

702

~T62 464

720

720

648

576

549 

532

549

29,069

938

+2

Aug.

506

448

395

380

345

317

324

324

317

331

388

440

448

*402

380

373

331

310

331

331

310

304

286

236

380

455

455

448

418 

366

317

11,446

369

-9

Sept.

317

310

380

480

493

425

425

472

432

440

388

373

440

432

352

338

324

331

324

373

558

919

919

842

*750

648

630

612

666 

684

15,082

503

+4

Adjusted for change in contents in Millinocket and Squapan Lakes

Mean 

Cf sin 

In.

261 

0.161 

0.19

17" 

0.101

0.12

Calendar year 1955: 

Water year 1955-56:

39 

0.024 

0.03

922 

0.569 

0.66

418 

0.258 

0.28

309 

0.191 

0.22

4,554 

2.81 

3.14

8,595

5.31 

6.12

Observed

Max 19,900 Min 110 Mean 2,201 

Max 12,400 Min 110 Mean 1,612

2,654 

1.64 

1.83

940 

0.580 

0.67

360 

0.222 

0.26

507 

0.313 

0.35

Adjusted

Mean 2,141 Cfsn 1.32 In. 18.01 

Mean 1,648 Cfsm 1.02 In. 13.87

Peak discharge (base, 13,000 cfs). No peak above base.

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Millinocket and Squapan Lakes.

Note.--Stage-discharge relation affected by ice Nov. 16 to Apr. 21.
ST. JOHN RIVER BASIN

Meduxnekeag River near Houlton, Maine

Location. Lat 46°06'15", long 67°52'00", on right bank 0.3 mile downstream from South 

Branch and 2 miles upstream from Houlton, Aroostook County.

Drainage area.--175 sq mi.

Records available. October 1940 to September 1956. October 1940, monthly discharge only, 

published in WSP 1301.

Gage. Water-stage recorder. Datum of gage is 333.92 ft above mean sea level, datum of 

1929.

Average discharge.--16 years, 280 cfs.

Extremes. Maximum discharge during year, 2,780 cfs Apr. 18 (gage height, 6.44 ft); minimum daily, 6.9 cfs Dec. 28 to Jan. 2.

1940-56: Maximum discharge, 6,590 cfs Sept. 12, 1954 (gage height, 9.28 ft); maximum gage height, 10.83 ft Mar. 27, 1953 (backwater from ice); mininum discharge, 

3.6 cfs Sept. 19, 1946 (gage height, 2.09 ft).

Remarks.--Records excellent except those for period of ice effect, which are fair. 

Revisions (water years).--WSP 1031: 1944.

Rating tables, water year 1955-56, except period of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Apr. 17

75

3.0 160

3.5 360

4.0 620

5.O 1,300

5.3 1,540

2.4

2.5 

2.7 

3.0 

3.5

Apr. 18 to Sept. 30 

23

180

400

4.0 650

5.0 1,360

6.0 2,320

7.0 3,400

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

18

20

18

18

18

16

16

17

19

20

20

19

18

18

17

16

16

16

16

17

17

17

18

18

18

20

20

20

20

20

19

E60

18.1

0.103

0.12

Nov.

18

18

18

18

18

20

27

31

34

34

31

31

30

30

31

30

30

30

27

26

24

23

23

21

20

19

18

16

16

-15

727

24.2

0.138

0.15

Dec.

15

15

14

13

13

13

13

14

15

16

17

17

15

14

12

12

12

12

11

11

11

9.6

8.9

8.9

8.2

8.2

7.6

6.9

679

6 . 9

6. 9

364.0

11.7

0.067

0.08

Jan.

6.9

6.9

7.6

7.6

7.6

8.2

12

14

*23

51

124

210

250

325

400

330

270

230

210

180

168

160

148

140

132

124

116

110

106

102

100

4,079.8

132

0.754

0.87

Feb.

98

95

92

90

85

85

82

80

80

78

75

71

71

71

69

*69

62

62

60

60

58

56

54

58

60

78

90

110

112

2,211

76.2

0.435

0.47

Mar.

116

112

110

106

102

100

100

100

102

118

120

124

118

112

100

90

88

80

78

71

*69

62

62

62

60

60

60

62

62

60

58

2,724

87.9

0.502

0.58

Apr.

56

56

58

64

75

100

168

290

400

525

610

550

520

550

630

800

1,540

2,630

2,440

2,060

1,760

1,630

1,340

1,190

1,120

1,090

1,120

1,290

1,390

1,830

27,882

929

5.31

5.92

May

2,050

1,680

*1,400

1,210

1,170

.1,140

1,040

875

746

645

615

570

590

605

662

630

560

485

435

375

332

296

278

296

269

236

228

355

420

380

336

20,909

674

3.85

4.44

June

370

410

365

314

282

248

216

188

180

188

260

292

314

282

232

224

184

148

130

113

*92

92

97

89

113

144

109

92

80

75^

5,923

197

1.13

1.26

July

66

475

510

328

220

164

133

137

137

176

180

152

116

120

228

212

156

120

100

83

70

66

70

70

66

73

70

75

94

92

73

4,632

149

0.851

0.98

Auj.

66

89

63

66

57

50

44

41

37

52

164

123

*92

77

73

62

51

46

53

80

77

64

53

48

48

39

44

42

41

37

3_4_

1,933

62.4

0.357

0.41

Sept.

33

31

37

53

50

42

41

36

33

33

30

29

31

41

42

44

44

55

64

62

100

116

97

*80

77

80

77

68

59

51

1,636

54.5

0.311

0.35

Calendar year 1955: Max 3,300 Min 6.9 Mean 223 Cfsm 1.27 In. 17.32

Water year 1955-56: Max 2,630 Min 6.9 Mean 201 Cfsm 1.15 In. 15.63

Peak discharge (base, 2.100 efs).--Apr. 18 (8 p.m.) 2,780 cfs (6.44 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 19 to Apr. 17.
22 ST. CROIX RIVER BASIN

St. Croix River at Vanceboro, Maine

Location.--Lat 45°34'10", long 67°25'45", on right bank at international highway bridge 

in Varceboro, Washington County, 400 ft downstream from outlet of Spednik Lake.

Drainage area.--417 sq mi (revised).

Records available.--October 1928 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 367.75 ft above mean sea level, datum of 

1929.

Average discharge. 28 years, 691 cfs.

Extremes.--Maximum discharge during year, 1,800 cfs Aug. 6 (gage height, 6.95 ft); minimum, 28 cfs Jan. 10 (gage height, 2.48 ft).

1929-56: Maximum discharge, 4,470 cfs Apr. 23, 1954 (gage height, 9.24 ft); minimum, 1.9 cfs several times during October and November 1936 (gage height, 1.91 ft), 

when flow was held back by cofferdam during repairs to dam Just upstream.

Remarks.--Records excellent except those below 150 cfs, which are good. Plow regulated 

by Chiputneticook Lakes (combined usable capacity, about 13,200,000,000 cu ft).

Rating table, water year 1955-56 (gage height, In feet, and 

discharge, In cubic feet per second)

3.1 

3.5 

4.0 

4.5

84

145

247

377

5.0 

5.5 

6.0 

7.0

544

780

1,090

1,850

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Oct.

604

595

590

582

*582

569

565

565

565

557

557

548

540

524

524

517

513

517

509

509

501

335

192

190

154

192

192

194

192 

192

190

13,596

439

-

-

Nov.

188

190

190

190

190

190

192

192

192

194

192

194

196

194

196

196

196

198

196

194

198

194

190

192

192

192

420

385

224 

224

6,271

209

-

-

Dec .

245

259

257

257

257

257

254

*254

490

755

730

705

680

655

415

220

365

350

255

211

170

106

106

106

106

106

106

104

104 

104

104

9,093

293

-

-

Jan.

104

106

106

104

104

104

104

108

480

575

305

152

167

210

156

159

161

161

163

335

290

247

370

425

281

284

284

286

315 

405

291

7,342

237

-

-

Feb.

291

480

306

306

309

309

317

319

319

319

319

322

322

322

*322

319

319

319

319

319

319

317

485

586

578

578

569

705

765

11,379

392

-

-

Mar.

750

735

730

715

705

810

858 852"

852

828

804

798

775

760

755

740

735

720

705

690

675

660

645

626

6_12

599

586

573

561 

552 552~

21,958

708

-

-

Apr.

540

532

521

517

340

194

202

211

220

231

238

247

257

266

276

291

280

182

190

198

200

206

209

213

217

222

222

231

236 

242

8,131

271

-

-

May

247

254

257

261

266

*266

269

271

274

276

278

281

281

281

281

450

1.270

815

281

320

449

600

735

535

575

515

406

660

600 

705

730

13,689

442

-

-

June

650

436

505

1,000

795

825

795

740

406

515

990

984

984

*984

725

436

436

570

1,090

1,450

,450

,440

730

,020

,420

,420

,370

1,380

1,030 

569

27,145

905

-

-

July

565

565

557

557

557

785

1,500

1,290

1,260

750

569

805

1,240

1,230

760

498

494

494

491

491

491

491

487

487

491

491

491

905

1,200 

1,170

1,160

23,122

746

-

-

Aug.

1,140

1,130

1,510

1,680

1,640

670

284

495

1,210

1,180

1,050

876

960

,150

,140

,120

,100

,090

,080

,070

,040

,030

,010

996

996

978

966

954

942 

930

32 , 335

1,043

-

-

Sept.

900

900

894

620

462

462

466

462

459

456

452

452

449

449

456

449

449

456

449

443

446

443

439

436

433

433

430

427

424 

421

14,917

497

-

-

Calendar year 1955: Max 2,110 Min 104 Mean 930 Cfsm - In. -

Water year 1955-56: Max 1,680 Min 104 Mean 516 Cfsm - In. -

Discharge measurement made on this day.
ST. CROIX RIVER BASIN

Grand Lake Stream at Grand Lake Stream, Maine

Location.--Lat 45"10'25", long 67°46'05", on left bank at Big Falls, 0.5 mile southeast 

of village of Grand Lake Stream, Washington County, 0.8 mile downstream fron outlet dam 

of Grand Lake.

Drainage area.--224 sq mi.

Records available.--October 1928 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 273.96 ft above mean sea level, datum of 

1929.

Average discharge.--28 years, 352 cfs.

Extremes.--Maximum discharge during year, 1,780 cfs July 24 (gage height, 5.02 ft); minimum, 53 cfs Aug. 18 (gage height, 1.35 ft).

1928-56: Maximum discharge, 2,840 cfs June 12, 1952 (gage height, 6.35 ft); minimum 

mum daily, 5 cfs Dec. 3-6, 11, 1945.

Remarks.--Records excellent except those for period of no gage-height record, which are 

fair. Flow regulated by Grand and other lakes (combined usable capacity, at out 

8,250,000,000 cu ft).

Revisions . WSP 971: Drainage area.

Rating table, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Stage-discharge relation affected by ice Dec. 16, 17J

1.4

1.5

1.6

1.7 

1.9 

2.2

83

99

141

225

3.0 

3.5

4.0

5.0

326

541

790

1,080

1,760

Discharge, in cubic feet per second, water year October 1955 to September 19E"6

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

585

580

750

735

*556

546

527

522

517

517

507

498

484

474

470

460

455

451

446

442

432

395

419

410

410

397

401

393

381

373

361

14,894

480

-

-

Nov.

369

373

369

361

361

365

192

275

361

354

347

347

344

336

340

330

330

333

322

322

312

312

298

298

182

225

284

278

281

274

9,475

316

-

-

Dec.

160

198

265

261

261

265

250

175

162

175

162

157

157

154

154

154

152

152

152

152

152

150

150

150

150

150

150

150

150

150

150

5,370

173

-

-

Jan.

150

148

148

148

148

148

146

146

146

144

138

142

146

144

144

144

142

142

140

144

144

144

144

144

144

144

144

144

144

144

144

4,482

145

_

-

Feb.

144

146

146

144

146

144

146

146

149

149

149

149

149

149

149

146

150

162

192

195

195

195

195

195

235

326

322

415

551

5,679

196

-

-

Mar.

541

531

522

512

512

498

488

498

517

507

488

479

465

465

460

446

460

451

451

446

. 437

428

414

410

406

397

393

389

377

TTT

381

14,146

456

-

-

Apr.

377

369

358

361

265

103

101

1ST

101

101

101

101

101

101

101

110

130

130

127

127

127

130

130

130

132

132

132

130

130

134

4,673

156

-

-

May

136

136

136

132

136

*141

136

136

132

132

132

132

139

151

149

151

*154

154

154

154

154

157

162

164

162

162

162

167

170

167

167

4,617

149

_

-

June

167

167

167

167

173

178

175

175

178

178

490

105

97

94

93

94

89

71

300

275

65

66

66

 66

68

68

68

69

68

68

4,105

- 137

_

-

July

285

381

381

381

377

373

373

369

361

1,010

1,540

1,030

340

344

350

1,040

1,510

995

565

490

561

556

950

850

540

425

605

635

71

70

485

17,643

569

_

-

Aag.

790

818

965

iloio

954

954

*770

319

316

316

316

312

308

308

302

330

285

291

271

258

258

261

258

258

255

255

258

255

255

255

13,771

444

_

-

Sept.

255

255

255

295

470

465

460

455

451

442

437

428

424

419

395

265

414

414

393

385

385

377

373

361

361

358

415

510

424

414

11,755

392

_

-

Calendar year 1955: Max 1,470 Min 83 Mean 546 Cfsm - In. -

Water year 1955-56: 1955-56: Max 1,340,540____Min Min65 ____ Mean 302 Cfsm - In. -__ ______

* Discharge measurement made on this day.

Note. No gage-height record Dec. 18 to Jan. 18; discharge estimated from records of gate openin 

at storage dam three-quarters of a mile upstream.
24 ST. CROIX RIVER BASIN

St. Croix River near Baileyville, Maine

Location. Lat 45°15'55", long 67°28'35", in township of Baileyville, Washington County, 

on right bank 700 ft downstream from powerhouse of St. Croix Paper Co. at Grand Palls 

and 8 miles upstream from village of Woodland.

Drainage area.--1,320 sq mi, approximately.

Records available. November 1919 to September 1956.

Gage. Water-stage recorder. Datum of gage is 148.8 ft above mean sea level, datum of 

1929.

Average discharge. 37 years, 2,206 cfs.

Extremes. Maximum discharge during year, 8,570 cfs Apr. 18 (gage height, 6.36 ft); minimum daily, 355 cfs Dec. 25.

1919-56: Maximum discharge, about 23,300 cfs May 1, 1923 (gage height, 13.90 ft); 

minimum daily, 100 cfs (estimated) July 20, 1924, when plant was closed down.

Remarks.--Records excellent except those below 600 cfs and those for periods of shifting 

control, which are good. Plow regulated by Chiputneticook Lakes, Grand and other 

lakes (combined usable capacity, about 25,000,000,000 cu ft)

Revisions (water years) i WSP 1231: 1922.

Rating table, water year 1955-56, except periods 

height, in feet, and discharge, in cubic

1.2 

1.5

350

470

590

800

1,040

Z.O 

3.0 

4.0 

6.0

shifting control (gage 

et per second)

1,570

2,850

4,340

7,850

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19 

20

21

22

23

24

25

26

27 

28

29

30 

31

Total

Mean

Cf sm

In.

Oct.

1,180 

805

1,120

1,180

1,180

*1,210

1,220

1,190

1,250

1,160

1,200

1,200

968

1,050

1,000

965

850

1,040

1,170 

955

653

960

1,170

965

709

716

702 

785

1,020

723

30,966

999

-

-

Nov.

758 

848

765

758

758

855

646

758

960

1,170

730

723

723

1,260

1,610

1,210

765

702

758 

751

765

709

674

674

674

611

618 

695

618

751

24,297

810

-

-

Dec.

872 

865

680

675

660

610

710

*680

645

680

565

640

510

525

530

675

660

620

620 

640

640

620

610

585

555

400

510 

660

735

715

645

19,537

630

-

-

Jan.

525 

620

630

710

630

565

610

405

640

625

665

1,060

735

2,220

2,550

2,180

2,420

*2,290

2,280 

2,360

2,240

1,090

1,960

2,230

1,800

1,490

1,610 

1,640

1,630

1,610

1,450

43,470

1,402

_

-

Feb.

1,610 

1,630

1,470

1,640

895

1,360

1,640

1,670

1,710

1,650

1,690

1,730

1,690

1,700

*1,730

1,730

1,740

1,730

1,020 

1,640

1,700

1,710

1,730

1,730

1,730

1,750

1,710 

1,940

2^160

47,835

1,649

_

-

Mar.

1,930 

2,140

2.280

1.150

2,150

2,190

2,090

2,090

2,180

2,220

1,890

2,090

2,190

2,140

2,160

2,150

2,240

1,520

2,180 

*2,150

2,150

2,220

2,160

2,190

2,120

2,220

1,970 

1,920

1,960

1,940

1,930

63,910

2,062

-

-

Apr.

1,270 

1,870

2,O6O

1,960

2,160

2,140

2,180

2,320

2,290

2,380

2,420

2,450

2,380

2,030

1.220

2,890

4,530

7,110

7.470 

6,460

5,870

5,810

5,760

5,650

5,360

5,310

4,260 

4,000

4,120

5,950

111,680

3,723

-

-

May

7.270 

7,190

6,210

5,400

*5,260

4,890

4,680

3,870

3,000

2,790

2,670

2,580

2,390

2,600

4,370

3,180

2,810

2,770

2,79O 

2,660

2,480

2,110

2,370

2,610

2,670

2,710

1,980 

2,070

3,080

3,590

3,170

108,220

3,491

-

-

June

5.020 

2,630

1,050

2,160

2,370

2,620

2,750

2,700

2,590

1,200

2,420

2,610

2,640

2,610

2,050

2,630

1,610

2,450

2,700 

2,460

2,570

2,480

2,640

1,570

2,330

2,660

2,520 

2,400

2,490

2,460

71,570

2,579

-

-

July

970 

1,650

2,500

960

2,310

2,550

2,550

1,320

2,110

2,350

2,280

2,510

2,290

2,270

1,380

2,100

2,320

2,200

2,020 

1,980

1,880

1,690

1,960

2,070

2,120

2,050

2,090 

2,140

1,180

2,020

Z,230

61,610

1,987

-

-

Aug.

1,910 

2,020

1,960

2,190

1,470

1,680

1,630

1,610

*1,820

1,460

1,700

1,040

1,880

2,000

2,070

1,940

2,100

1,850

960 

1,670

1,710

1,610

1,570

1,590

1,580

945

1,520 

1,710

1,630

1,710

1 , 690

52,225

1,685

-

-

Sept.

1,640 

750

560

1,550

1,190

1,260

1,310

1,210

1,230

1,500

1,230

1,150

1,ZOO

985

1,200

825

1,380

1,220

1,180 

1,170

1,190

1,190

1,190

1,180

1,270

1,210

1,190 

1,130

1,220 

780

54,890

1,163

-

-

Calendar year 1955: Max 7,27O Min 355 Mean 2,631 Cfsm - Ir,

Water year 1955-56: Max 7,470 Min 355 Mean 1,831 Cfsm - Ir, -

* Discharge measurement made on this day.

Note.--Shifting-control method used Dec. 2 to Apr. 17, May 21 to Sept. 30.
DENNYS RIVER BASIN

Dennys River at Dennysville, Maine

Location. Lat 44°54'05", long 67°14'55", on right bank just above railroad bridge, 

0.9 mile upstream from Cathance Stream and 1 mile west of Dennysville, Washington 

County.

Drainage area.--92.4 sq mi.

Records available.--October 1955 to September 1956.

Gage. Water-stage recorder. Datum of gage is 54.78 ft above mean sea level, datum of 

1929.

Extremes.--Maximum discharge during year, 1,460 cfs Apr. 16 (gage height, 5.45 ft); minimum discharge observed, 9.4 cfs Aug. 18 (gage height, 0.34 ft).

Remarks.--Records excellent except those for periods of ice effect, no gage-height record 

or twice-daily staff-gage readings, which are fair. Flow partly regulated by power 

development at Meddybemps Lake.

Rating table, water year 1955-56, except periods of Ice effect (gage 

height, in feet, and discharge, In cubic feet per second)

.7 

1.0 

1.5 

2.O

7.6

12

32

62

132

227

2.5 

3.0 

4.0 

5.0 

5.2

343

482

819

1,240

1,330

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tota:

Mean

Cfsm

In.

Oct.

36

36

33

28

26

26

26

90

60

38

27

26

35

26

21

13.

20

22

26

27

27

27

28

29

30

30

30

30

29

27

961

31.0

-

-

Nov.

a!30

108

88

68

59

127

208

149

108

119

97

180

135

98

162

140

171

236

196

139

86

100

100

101

83

97

77

94

118

91

3,665

122

-

-

Dec.

-53 100

52

45

45

77

68

52

70

44

37

64

63

49

45

40

42

39

33

37

54

49

41

41

43

42

40

39

35

33

32.

1,504

48.5

-

"

Jan.

31

30

27

22

27

27

20

27

58

214

320

343

473

698

740

574

456

*356

287

253

234

204

165

182

184

175

165

178

127

110 

122

6,829

220

-

"

Feb.

182

169

180

182

162

163

135

162

200

194

186

169

162

*200

200

194

171

182

165

126

140

156

149

151

180

202

200

178

188

5,028

173

-

-

Mar.

175

200

247

245

240

225

208

160

158

196

196

242

238

234

219

200

163

219

206

*180

184

169

160

167

163

169

158

156

156

156

151

5,940

192

-

-

Apr.

151

153

182

299

438

524

503

450

438

427

430

396

407

421

497

1,320

1,550

1,020

744

574

473

447

473

534

485

438

456

488

537

694

15,729

524

-

"

May

580

462

416

407

*497

462

364

333

294

346

369

326

320

433

396

*313

306

267

249

221

190

200

184

247

240

234

240

575

495

359 

282

10,607

342

-

"

June

262

245

234

276

294

278

256

236

247

247

282

294

*253

231

223

249

219

212

190

3.73

76

42

40

.36

41

71

163

81

100

162

5,713

190

-

-

July

100

122

92

55

59

45

33

36

37

46

45

34

33

55

127

87

63

47

34

25

22

21

21

20

19

16

15

19

33

35

30

1,426

46.0

-

-

Aug.

27

20

16

14

24

23

30

*23

19

16

16

15

14

13

11

12

11

12~ 9.4

15

15

13

11

15

14

13

13

13

13

13

13

486.4

15.7

-

-

Sept.

14

20

30

22

17

16

20

22

22

20

17

15

14

14

29

82

104

124

110

68

37

26

22

22

38

45

38

27

24

45

1,104

36.8

-

-

Calendar year 1955: Max 

Water year 1955-56: Max 1,33O

Peak dlseharse (base, 600 cfs)

cfs (5.45 ft); Apr. 30 (2:3O p.m

Min - 

Min 9.

.--Jan. 15 

. ) 719 cfs

Mean - Cfsm - ' In. - 

4 Mean 161 Cfsm - In. -

(time unknown) about 785 cfs; Apr. 16 (ll:3O p.m.) 

(3.73 ft); May 28 (9 to 1O a.m.) 6O9 cfs (3.41 ft)

1,460

Discharge measurement made on this day.

a No gage-height record Nov. 1; discharge estimated on basis of weather records.

Note. Discharge computed from twice-daily staff-gage readings Nov. 2-22; from once-daily staffgage readings July 19 to Aug. 23. Stage-discharge relation affected by ice Nov. 22, Dec. 2o to 

Jan. 2.
MAC HI AS RIVER BASIN

Machias River at Whitneyville, Maine

Location. Lat 44°43 I 25", long 67°31'15", on right bank 

bridge at Whitneyville, Washington County.

ft downstream from highway

Drainage area. 457 sq mi.

Records available. --October 1905 to September 1921, September 1929 to September 1956. 

Monthly discharge only for some periods, published in WSP 1301.

Gage . --Water -stage recorder. Datum of gage is 37.22 ft above mean sea level, datum of 

1929. Oct. 1, 1905 to Sept. 30, 1921, staff and chain gages on highway bridge at different datum.

Average discharge. 43 years (1905-21, 1929-56), 945 cfs.

Extremes . Maximum discharge during year, 5,060 cfs Apr. 18 (gage height, 9.15 ft); minimum, 17 cfs Dec. 14, 15 (gage height, 2.32 ft), but may have been lower Dec. 30 during 

period of ice effect.

1905-21, 1929-56: Maximum discharge, 11,800 cfs Nov. 28, 1950 (gage height, 14.70 

ft, from floodmarks), from rating curve extended above 7,000 cfs by logarithmic plotting; maximum gage height, 16.18 ft Mar. 14, 1936 (ice jam); minimum daily discharge, 

3.5 cfs Oct. 12, 1939, when flow was held back by cofferdams during reconstruction of 

highway bridge upstream.

Remarks. Records excellent except those for periods of ice effect or no gage-height record, which are fair. Some storage in lakes above station.

isions (wat ter years) . --WSP 241: 1903-4. WSP 971: Drainage area, WSP 1231: 1907-15,

1916 -21 (M).

Rating table, water year 1955-56, except period of ice effect (gag= 

height, in feet, and discharge, in cubic feet per second)

2.3

2.4 

2.6 

2.8 

3.0 

3.3 

3.6

97

175

295

4.0 

4.5 

5.0 

6.0 

7.0 

8.0 

9.1

520

890

1,330

2,220

3,120

4,010

5,010

Discharge, in cubic feet per second,_water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18 

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Cfsm

In.

Oct.

178

175

169

148

142

128

130

415

175

175

132

435

97

115

120

120

115

115 

120

*125

125

138

142

163

163

145

148

142

140 

135

128

4,898

158

0.346

0.40

Nov.

277

446

483

406

146

367

685

627

495

406

372

458

508

458

435

406

606

700 

613

520

417

412

372

350

345

315

300

250

295

345

12,915

430

0.941

1.05

Dec.

390

275

295

240

220

205

190

175

172

166

160

154

145

75

22

48

76

102 

360

210

70

30

34

44

53

68

128

150

120

41

37

4,455

144

0.315

0.36

Jan.

63

104

104

102

104

110

116

120

140

240

690

1,240

1,510

2,850

5.290

2,940

*2,260

1,330 

890

730

655

550

460

490

550

430

445

485

295

176

230

23,699

764

1.67

1.92

Feb.

250

240

190

196

250

250

295

29&

295

295

295

300

305

*460

370

295

305

295 

290

275

265

260

255

250

250

265

330

400

370

8,391

289

0.632

0.68

Mar.

330

305

285

430

470

415

390

360

330

320

330

410

535

585

535

510

460

435 

435

*435

410

395

380

370

360

350

335

315

305

305

305

12,135

391

0.856

0.99

Apr.

305

330

350

400

550

1,330

2,440

2,570

2,210

1,850

1,800

1,750

1,700

1,720

1,640

1,780

3,670

4.940 

4,310

3,530

2,930

2,470

2,140

2,140

2,400

2,270

2,230

2,220

2,480

3,030

63,485

2,116

4.63

5.17

May

3,380

3,220

2,900

2,620

*2,420

2,380

2,160

1,900

1,730

1,690

1,830

1,560

1.460

2,030

2,290

2,230

2,180

2,130 

2,080

1,950

1,660

1,840

1,800

1,870

1,910

1,860

2,120

3,450

5.490

2, 820

2 290

69,250

2,234

4.89

5.64

June

2.260

1,230

440

290

874

802

685

613

566

526

546

*620

692

730

722

730

810

802 

692

634

585

552

514

520

520

526

526

514

514

508

20,543

685

1.50

1.67

July

4-83

4-64

4-70

4-70

345

330

417

417

412

452

514

495

452

452

700

945

470

406 

441

400

330

310

295

295

295

300

300

300

226

132

157

12,475

402

0.880

1.01

Aug.

192

200

200

325

220

30

*43

196

210

163

151

148

148

148

108

102

59

50 

97

108

111

104

99

99

125

122

108

106

115

93

95

4,075

131

0.287

0.33

Sept.

99

111

196

175

140

196

192

210

178

100

51

53

55

63

128

157

169

200 

238

226

206

189

178

175

182

210

214

196

175

157

4,819

161

0.352

0.39

Calendar year 1955: Max 3,520 Min 22 Mean 825 Cfsm 1.81 In. 24.51

Water year 1955-56: Max 4,940 Min 22 Mean 659 Cfsm 1.44 In. 19.61

Peak discharge (base. 5.200 cfs). Jan. 15 (time unknown) about 5.500 cfs; Apr. 18 (6 to 8 a.m.) 

5,060 cfs (9.15 ft); May 1 (12 to 2 p.m. 3,410 cfs (7.33 ft); May 28 (8 to 10 p.m.) 3,700 cfs (7.66 

ft).

* Discharge measurement made on this day.

Note.--Mo gage-height record Nov. 30 to Dec. 7; discharge estimated on basis of recorded range in 

stage and weather records. Stage-discharge relation affected by ice Dec. 20 to Air. 6.
MACHIAS RIVER BASIN

East Maohlas River near East Machias, Maine

Location.--Lat 44°46'05", long 67°24'30", on left bank just downstream from o-itlet of 

Hadley Lake, 3 miles upstream from East Machias, Washington County.

Drainage area. 251 sq mi.

Records available. October 1926 to September 1956.

Gage.--Staff gage and crest-stage indicator; gage read once daily. Datum of gage is 

34.9 ft above mean sea level, datum of 1929. Prior to O.ct. 1, 1950, at datum 1.00 ft 

higher.

Average discharge.--29 years (1927-56), 512 cfs.

Extremes..--Maximum discharge during year, 2,170 cfs Apr. 21 (gage height, 7.10 ft); minimum, 38 cfs Sept. 1 (gage height, 1.34 ft).

1926-56: Maximum discharge, 3,660 cfs Dec. 15, 1950 (gage height, 9.05 ft); minimum, 8.4 cfs Nov. 8, 1947 (gage height, 0.65 ft, present datum).

Remarks.--Records good.

Revisions (water years). WSP 971: Drainage area. WSP 1231: 1928-30.

Rating table, water year 1955-56 (gage height, In feet, and discharge, 

in cubic feeb per second)

1.2

1.3

1.4 

1.7 

2.0 

2.5

81

124

208

3.0 

4.0 

5.0 

6.0 

7.1

310

595

1,010

1,500

2,170

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

31

32

23

34

25

36

37

38

29

30

31

Total

Mean

Cfsm

In.

Oct.

57 

56

57

58

*58

57

58

60

61

62

65

61

61

60

57

56

57 

56

55

55

53

51

51

52

53

53

51

51

50

54 

55

1,741

56.2

0.224

0.26

Nov.

59 

73

88

96

106

118

134

146

156

171

190

204

215

326

226

230

241 

255

265

265

361

357

353

347

341

230

319

212

204

197

5,785

193

0.769

0.86

Dec.

188 

180

171

166

159

154

150

*142

134

127

122

118

112

108

103

97

94 

91

88

82

80

77

74

70

69

69

67

65

64

60

58

3,338

108

0.430

0.50

Jan.

57 

57

53

49

47

46

49

64

94

146

190

305

444

610

765

918

*1.090 

1,070

1,060

1,040

1,030

1,000

927

857

765

686

647

581

548

504 

467

16,156

521

2.08

2.40

Feb.

450 

436

423

407

400

387

382

372

367

360

350

345

338

*333

338

323

315 

310

303

393

285

374

369

367

365

361

365

367

274

9,647

333

1.33

1.43

Mar.

278 

285

292

315

328

340

347

350

355

357

363

372

384

392

404

413

407 

404

407

*407

397

383

372

357

350

340

333

326

315

310 

305

10,985

354

1.41

1.63

Apr.

301 

298

292

319

352

436

570

659

769

874

940

996

1,040

1,090

1,130

1,180

1,440 

1,740

1,930

3,050

2.170

3,140

2,160

3,170

3,140

3,110

3,080

2,OOO

1,910

1,900

39,186

1,306

5.20

5.80

May

1.900 

1,880

1,870

,850

* ,810

,360

,460

,630

,490

,420

1,360

1,320

1,290

1,380

1,250

1,330

1,300 

1,170

1,110

1,040

972

900

831

773

725

741

773

823

852

874 

883

38,057

1,328

4.89

5.64

June

857 

831

823

810

781

737

693

659

625

588

570

548

*528

508

494

476

461 

441

423

407

387

37O

350

333

333

310

296

285

276 

265

15,454

515

3.05

2.29

July

259 

253

245

239

232

226

217

308

208

206

301

197

194

190

198

305

315 

335

330

310

300

196

190

186

176

168

160

150

146 

140

156

6,196

300

0.797

0.92

Aug.

128 

120

118

113

104

98

*94

90

89

84

81

79

76

75

74

73

71 

69

67

65

63

60

57

55

53

51

48

47

44 

43

i°

2,327

75.1

0.299

0.34

Sept.

38 

40

43

47

52

55

60

67

69

73

70

68

64

60

56

58

60 

65

66

68

71

73

76

80

83

79

76

73

71 

69

1,929

64.3

0.256

0,39

Calendar year 1955: Max 1,520 Min 50 Mean 444 Cfsm 1.77 In. 34.02

Water year 1955-56: Max 2,170 Min 38 Mean 412 Cfsm 1.64 In. 22.36

* Discharge measurement made on this day.
e8 NARRAGUAGUS RIVER BASIN

Narraguagus River at Cherryfield, Maine

Location. --Lat 44°36'30", long 67°56'15", on left "bank at Cherryfield, Washington County, 

800 ft upstream from railroad bridge and 0.7 mile downstream from mouth of West Branch 

of Narraguagus River,

Drainage area.--232 sq mi.

Records available.--February 1948 to September 1956.

Gage. Water-stage recorder. Datum of gage is 44.2 ft above mean sea level, datum of 

1929. Prior to July 1, 1948, staff gage at same site and datum.

Average discharge.--8 years, 501 cfs.

Extremes.--Maximum discharge during year, 3,200 cfs Apr. 18 (gage height, 12.91 ft); minimum, 45 cfs Aug. 29 (gage height, 7.29 ft).

1948-56: Maximum discharge, 7,250 cfs Nov. 28, 1950 (gage height, 15.81 ft); minimum, 31 cfs Sept. 10, 1955 (gage height, 7.12 ft).

Remarks.--Records excellent except those for periods of ice effect, which are fair. 

Revisions (water years). WSP 1301: 1948(M).

Rating table, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

7.2 

7.4 

7.6 

7.8 

8.0 

8.5

111

149

270

9.0

9.5

10.0

11.0

12.0

13.0

425

620

850

1,460

2,250

3,300

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

L3

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsra

In.

Oct.

69

69

64

58

56

50

53

77

82

82

76

69

64

56

53

50

49

56

67

68

68

79

83

82

82

82

82

81

74

70

69

2,120

68.4

0.295

0.34

Nov.

215

495

39?

302

253

355

480

386

329

276

270

382

360

308

351

329

382

484

399

341

296

273

267

219

Ell

185

170

172

174

178

9,234

308

1.33

1.48

Dec.

150

13E

128

120

118

116

110

106

98

95

90

83

82

81

81

81

81

76

69

69

68

67

67

67

69

69

72

72

70

68

64

2,719

87.7

0.378

0.44

Jan.

61

58

58

69

76

96

106

128

240

955

1,210

,170

,380

,760

.860

,700

,360

,020

800

640

520

425

360

350

330

305

285

270

250

240

235

18,317

591

2.55

2.94

Feb.

240

215

215

220

194

194

198

210

215

210

198

198

*240

240

225

215

205

198

192

188

180

178

174

168

166

200

215

194

190

5,875

203

0.875

0.94

Mar.

188

192

215

295

285

265

240

235

230

225

235

270

390

360

330

310

295

275

*255

240

235

235

235

235

220

215

205

205

210

220

225

7,770

251

1.08

1.24

Apr.

225

240

270

330

425

850

,330

,320

,240

,230

,240

,250

,240

,280

,180

,390

,780

.090

,700

,180

,770

,490

,340

,330

,440

,260

,120

,050

,140

,420

59,150

1,305

5.62

6.27

May

1,530

1,380

1,140

*988

994

951

871

782

681

686

736

690

690

881

860

740

681

595

522

476

425

386

363

402

392

360

495

1.690

1,310

972

745

24,414

788

3.40

3.92

June

616

526

472

476

511

457

402

360

329

329

335

*335

314

282

253

245

234

214

192

177

170

170

164

155

168

172

166

170

170

155

8,717

291

1.25

1.40

July

137

137

143

129

115

110

118

129

135

164

147

127

110

160

jjlj.

308

267

216

179

147

124

110

111

110

106

99

92

82

78

72 

68

4,341

140

0.603

0.70

Aug.

68

85

78

73

70

68

*65

65

62

62

68

62

58

57

57

57

55

53

52

55

53

52

48

48

52

52

48

47

45

48

52

1,815

58.5

0.252

0.29

Sept.

68

106

115

102

86

76

76

86

74

67

59

54

54

52

72

86

85

113

131

TT3

106

98

85

83

113

118

105

92

82

74

2,631

87.7

0.378

0.42

Calendar year 1955: Max 2,120 Mln 31 Mean 368 Cfsra 1.59 In. 21.55

Water year 1955-56: Max 3,090 Mln 45 Mean 347 Cfsra 1.50 In. 20.38

Peak discharge (base. 1.500 cfa) . Ja: 

3,200 cfs (12.91 ft); May 1 (8 to 11 aj 

(11.45 ft).

* Discharge measurement made on this day.

Note..--Stage-discharge relation affected by

14 (11:30 p.m.) 1,930 cfs (11.63 ft); Apr. 18 (1 a.n 

1,540 cfs (11.12 ft); May 28 (10 to 11 a.m.) 1,790

Nov. 27, Nov. 30 to Jan. 10, Jan. 20 to Apr. 12.
UNION RIVER BASIN 29

West Branch Union River at Amherst, Maine

Location. Lat 44°50'25", long 68°22'20", on right bank 200 ft upstream from site of old 

tannery dam, 0.6 mile upstream from Indian Camp Brook, 0.7 mile northwest of Amherst, 

Hancock County.

Drainage area.--148 sq mi.

Records available . --July 1909 to September 1919, July 1929 to September 1956. Published 

as Union River at Amherst October 1910 to September 1913.

Gage . --Water-stage recorder. Altitude of gage is 160 ft (from topographic map). July 

1909 to Sept. 30, 1919, staff and chain gages at highway bridge 1 mile downstream at 

different datum.

Average discharge. --37 years, 261 cfs.

Extremes. Maximum discharge during year, 1,490 cfs Apr. 17 (gage height, 6.60 ft); minimum daily, 11 cfs Jan. 7.

1909-19, 1929-56: Maximum discharge, 4,140 cfs Apr. 13, 1940 (gage height, 9.58 ft); 

maximum gage height, 10.41 ft Mar. 9, 1942 (ice Jam); minimum discharge, 3.6 cfs 

Sept. 29, 1941; minimum gage height, 2.82 ft Sept. 14, 1949.

Remarks . --Records excellent except those for period of ice effect, which are fair.

Revisions (water years). WSP 801: 1935. WSP 821: Drainage area. WSP 1231: 1912-15. 

1916 6 -19 - (M). WSP 1301: 1910-11.

Rating table, water year 1955-56, except period of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

3.0

3.1

3.2

3.3

3.4 

3.6

4.0 

4.5 

5.0

5.5 

6.0 

6.6

155

305

515

780

1,100

1,490

Discharge, In cubic feet per second, water year October 1955 to September 1956

 i i i i i i i r i r 

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

Z9

30

31

Total

Mean

Cf sm

In.

Oct.

16

*16

*15

15

14

13

15

17

17

16

15

15

14

13

13

12

13

15

15

14

16

20

18

18

18

19

20

20

20

20

21

503

16.2

0.109

0.13

Nov.

90

90

80

84

84

103

110

110

107

101

103

112

110

105

110

105

134

137

122

117

110

112

138

84

82

71

66

63

56

50

2,946

98.2

0.664

0.74

Dec.

47

45

41

37

36

35

34

33

33

32

32

30

29

28

2S

28

27

27

27

26

26

25

24

22

20

18

17

17

16

16

15

871

28.1

0.190

0.22

Jan.

15

14

13

12

12

12

11

18

37

84

156

210

290

380

465

*3B5

320

275

230

190

160

148

130

116

108

100

99

90

88

86

82

4,336

140

0.946

1.09

Feb.

80

79

77

73

71

68

70

71

70

68

70

80

*92

80

77

75

71

70

66

66

64

63

63

61

60

100

97

94

92

2,168

74.8

0.505

0.54

Mar.

94

106

154

160

156

150

138

130

150

146

142

210

205

1S2

166

156

150

138

130

124

120

110

108

106

100

100

100

100

*100

100

100

4,111

133

0.899

1.04

Apr.

104

106

118

139

235

334

462

544

544

559

579

579

594

642

647

786

,350

.440

,420

,370

,320

,260

,190

,140

,060

972

907

926

972

1,130

23,429

781

5.28

5.89

May

1.150

1,110

1,090

*1,020

991

926

857

786

701

663

615

559

530

564

559

520

481

426

380

341

298

269

256

244

235

220

244

401

414

414

376

17,640

569

3.84

4.43

June

334

305

288

285

282

305

269

241

232

235

253

*260

247

226

205

194

168

150

132

115

105

101

94

88

90

94

88

90

90

86

5,652

188

1.27

1.42

July

82

80

77

70

66

60

58

56

53

53

52

52

52

117

185

202

214

205

171

142

117

101

88

82

77

75

68

64

60

50

17

2,876

92.8

0.627

0.72

Aug.

44

44

40

37

35

34

*33

30

29

29

33

30

30

27

27

26

24

24

24

25

22

21

19

19

18

18

17

1§

17

16

17

825

26.6

0.180

0.21

Sept.

23

27

24

22

20

19

24

23

20

19

19

18

11

18

28

24

26

34

30

28

35

34

32

37

11

38

38

38

36

34

826

27.5

0.186

0.21

Calendar year 1955: Max 1,320 Mln 12 Mean 225 Cfsm 1.-52 In. 20.63

Water year 1955-56: Max 1,440 Mln 11 Mean 181 Cfsm 1.22 In. 16.64

Peak discharge (base, 1.000 cfa). Apr. 17 (8 to 12 p.m.) 1,490 cfs (6.60 ft).

* Discharge measurement made on this day.

Mote. Stage-discharge relation affected by Ice Nov. 26 to Apr. 3.
30 PENOBSCOT RIVER BASIN

East Branch Penobscot River at Grindstone, Maine

Location. Lat 45°43 I 50", long 68°35'20", on left bank 500 ft downstream from Bangor and 

Aroostook Railroad bridge, half a mile south of Grindstone, Penobscot County, and 

9§- miles upstream from confluence with West Branch Penobscot River.

Drainage area.--1.070 sq mi, approximately (including about 240 sq mi drained by Chamberlain Lake through Telos Canal).

Records available. October 1902 to September 1956. Monthly discharge only for some 

periods, published in WSP 1301.

Gage. Water-stage recorder. Datum of gage is 294.74 ft above mean sea le-'el, datum of 

1929. Prior to June 30, 1929, chain gage on railroad bridge at same datum.

Average discharge. 54 years, 1,877 cfs (unadjusted).

Extremes. Maximum discharge during year, 7,860 cfs May 1 (gage height, 8.73 ft); minimum 

daily, 154 cfs Dec. 2.

1902-56: Maximum discharge, 37,000 cfs Apr. 30, 1923 (gage height, 16.9 ft, site 

then in use, present datum); minimum daily (1914-56), 77 cfs Nov. 19, 1924.

Remarks.--Records excellent except those for periods of ice effect, which are fair. Plow 

partly regulated by Chamberlain, Telos, Second and Grand Lakes and Round Pond (see 

P. 41).

Revisions (water years). WSP 501: Drainage area. WSP 1301: 1907-12, 1914-29(M) .

Rating table, water year 1955-56, except period of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

3.9

4.0 

4.4 

4.9 

5.5

136

165

325

650

1,260

6.0 

7.0 

8.0 

9.0

1,970

3,800

6,020

8,600

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

*365 

335

325

320 

316

506

502

520

25

16

292

278

278

274

261

261

244

265

287

261

256

269 

265

248

252

265 

256

235

f§7

227

8,658

279

-169

Nov.

290 

800

468

365 

365

542

626

542

461

417

393

375

360

355

355

316

285

270

250

235

210

198 

188

178

170

168 

166

162

158

1 ^R _lb6

9,824

327

-44

Dec.

156 

154

184

210

235

265

295

315

325

350

375

405

435

470

495

500

500

530

535

540

540

540 

550

555

550

540 

535

520

520 

520

520

13,164

425

-321

Jan.

515 

515

515

520 

515

505

535

570

670

830

1,140

1,670

1.990

1,600

1,270

1,140

970

860

760

670

595

555

520

500

475

470 

505

650

810

810

810

24,460

789

+204

Feb.

820 

820

830

830 

840

850

860

870

880

880

890

890

900

930

1,140

*1,130

1,120

1,110

1,100

1,080

1,070

1,070 

1,080

1,390

1,660

1.670 

1,640

1,590

1,530

31,470

1,085

-669

Mar.

1.460 

1,320

1,140

1,030 

950

880

810

775

720

670

635

610

585

570

555

540

535

515

500

500

495

485 

485

495

*495

485

485

480

475 

470

475

20,620

665

-240

Apr.

460 

455

450

475 

570

810

1,260

1,600

1,590

1,530

1,460

1,430

1,470

1,590

1,790

2,050

2,460

3,010

4,010

5,010

4,900

4,680 

4,550

4,260

.4,120

 1,010 

4,260

5,240

6,040 

7.230

82,770

2,759

+619

May

7.570 

6,550

6,360

6,160 

6,330

*6,750

6,680

5,790

5,190

4,090

3,660

3,540

4,550

4,990

4,880

4,660

4,220

4,050

4,050

3,840

3,460

3,440 

3,240

3,140

2,800

2,770 

2.070 STfis 3,820 

2,900

2,900

137,890

4,448

+1,679

June

3,480 

3,740

3,640

4.010 

3,780

3,090

2,880

2,750

3,200

3,200

2,600

2,690

2,510

2,000

2,160

1,700

1,790

*1,760

1,660

1,260

1,060

930 

990

980

1,050

1,150 

1,020

910

915 

950

63,850

2,128

+47

July

731 

722

1,490

1,760 

1 , 790

1,190

950

9AO

1,030

1,320

1,260

1,070

l.O.'O

900

l.O'.O

1,100

1,030 9.-0

810

594

507

411 

4?9

423

595

435 

429

MB

66S 

602

731

27,233

£78

0

Aug.

668 

650

578

514 

448

320

311

292

*278

330

830

880

731

642

650

556

387

345

365

468

417

454 

429

423

474

387 

355

365

494 

494

423

14,958

483

-16

Sept.

316 

302

330

556 

695

494

340

405

381

375

370

360

316

360

535

740

731

785

776

776

1,060

1.080 

960

870

840

860 

850

830

821 

821

18,935

631

-165

Adjusted for change In reservoir contents

Mean

Cfsm 

In.

110 

0,103 

0.12

28: 

0.26' 

0.2

Calendar year 1955: 

Water year 1955-56:

5 104 

i 0.097 

J 0.11

993 

0.928 

1.07

416 

0.389 

0.42

425 

0.397 

0.46

3,378 

3.16 

3.53

6,127 

5.73 

6.61

Observed

Max 10,400 Mln 154 Mean 1,828 

Max 7,570 Mln 154 Mean 1,240

2,175 

2.03 

2.26

878 

0.821 

0.95

467 

0.436 

0.50

466 

0.436 

0.49

Adjusted

Mean 1,715 Cfsm 1.60 In. 21.76 

Mean 1,321 Cfsm 1.23 In. 16.81

 Discharge measurement made on this day. 

t Change In contents, equivalent In cubic feet per second, of Chamberlain, Teloi, Second and Grand 

Lakes, and Round Pond.

Mote. Stage-discharge relation affected by Ice Nov. 17 to Apr. 22.
PENOBSCOT RIVER BASIN 31

Penobscot River near Mattawamkeag, Maine

Location. Lat 45°34'00", long 68°24'10", on left bank i;800 ft downstream from Mattaseunk Dam and powerhouse, l£ miles upstream from Mattaseunk Brook, and 4£ miles upstream from Mattawamkeag, Penobscot County.

Drainage area. 3,310 sq ml, approximately (including about 240 sq ml drained by 

Chamberlain Lake through Telos Canal).

Records available. June 1940 to September 1956.

Gage.--Water-stage ~~1929. recorder. Datum of gage is 191.72 ft above mean sea level, datum of 

Average discharge. 16 years, 5,547 cfs (unadjusted).

Extremes. Maximum discharge during year, 12,800 cfs May 1 (gage height, 7.00 ft); minimum daily, 1,810 cfs Nov. 30.

1940-56: Maximum discharge, 40,200 cfs May 21, 1945 (gage height, 11.OS ft), from 

rating curve extended above 17,000 cfs; minimum daily, 1,430 cfs Aug. 17, 1941.

Remarks.--Records good. Plow regulated by several reservoirs above station (see p. 41).

Discharge, in cubic feet per second, water year October 1955 to September 1936

Day

1

2

3 

4

5

6

7

8

9

10

11

12 

13

14 

15

16

17

18 

19

20

21 

22

23

24

25

26

27

28

29

30 

31

Ototal

Mean

ft)

Oct.

3,600

4.000

3,130 

3,310

3,460

3,170

1,310

2,700

5,510

3,510

3,510

2,850 

3,080

3,260 

3,080

3,170

3,030

3,410 

3,510

3,130

3,460 

2,420

3,410

3,360

2,940

3,750

3,030

2,550

3,080

3,360 

3,560

101,650

3,279

-3,007

Nov.

3,800

3,750

4,250 

2,590

4,100

3,220

4,350

3,410

3,950

2,810

4,750

2,940 

3,130

3,170 

3,080

2,940

3,600

3,080 

3,260

2,380

3,130 

2,850

2,990

3,080

3,260

3,360

2,060

3,220

2,720 

1.810

97,040

3,235

-2,055

Dec.

2,590

2,260

2,380 

2,420

2,590

2,720

2,420

2,590

2,720

2,510

2,510

2,340 

2,510

2,340 

2,590

2,510

2,640

2,810 

2,810

2,990

2,510 

2,720

2,680

2,900

2,590

2,760

1.920

2,760

2,680

2,680 

2 590 1

80,040

2,582

-2,378

Jan.

2,680

2,990

3,170 

2,900

2,850

2,550

2,510

3,220

3,310

4,200

6_,1QO

5,510 

4,800

4,960 

4,400

4,300

3,800

3,510 

3,170

3,220

2,990 

3,170

3,030

2,990

3,260

3,170

2,990

3,700

3,600

3,410 

3,850

110,310

3,558

-246

Feb.

3,360

3,510

3,310 

3,800

3,510

3,600

3,600

3,460

3,600

3,510

3,410

3,510 

4,200

4,000 

3,460

5.170

3,310

3,410 

3,410

3,560

3,800 

3,600

3,600

3,800

4,100

4,050

4,100

4,150

3,750

105,650

3,643

-2,593

Mar.

3,900

3,850

3,650 

4,050

3,410

3,650

3,310

3,600

3,460

3,310

3,750

3,510 

3,560

3,460 

3,510

3,560

3,080

3,600 

3,850

3,600

3,700 

3,800

3,650

4,050

*3,700

3,650

3,650

3,310

3,170

3,460 

2.720

110,530

3,565

-2,229

Apr.

2,760

2.590

2,940 

3,080

3,700

4,200

4,400

4,700

5,020

4,400

4,700

4,750 

4,650

4,450 

4,650

5,460

6,680

8,400 

9,740

9,180

8,840 

8,220

8,170

7,100

7,050

6,370

6,950

8,070

9,500 

11.800

182,520

6,084

+3,373

May

12.000

10,000

9,790 

9,450

9,270

10,400

9,890

8,940

7,820

7,350

6,100

5,880 

6,950

8,310 

8,400

8,070

7,000

6,470 

6,680

5,880

5,990 

5,770

5,830

5,770

5,400

5,560

5,460

5,560

7,300

6,420 

5,670

229,380

7,399

+12,260

June

6,630

7,000

6,420 

6,900

7,000

5,990

5,720

4,960

5,400

5,990

5,460

5,240 

4,910

4,800 

4,910

4,800

4,450

4,600 

4,300

4,550

4,050 

*4,200

3,750

4,000

4,150

3,950

4,000

3,750

3,950 

5,700

149,530

4,984

+1,610

July

3,750

4,000

3,410 

3,410

4,250

4,450

4,050

4,150

3,800

4,400

3,750

3,750 

3,800

m3,800

4,250

3,900 

3,560

3,170

5,050 

3,510

3,130

3,310

3,080

3,130

3,460

3,310

3,510

3,650 

3,600

115,220

3,717

-1,484

A'lg.

3,800

3,900

3,460 

3,410

3,220

3,650

3,600

5.080

3,260

3,260

3,700

3)950

3,130 

3,650

3,560

5,310

3,460 

3,310

3,600

3,700 

3,360

3,650

3,360

3,700

3,410

3,220

3,410

3,510

3,750 

3,310

108,790

3,509

-1,831

Sept.

3,510

2,640

2.510 

3,310

3,700

3,950

3,560

3,650

3,310

3,260

3,080

3,080 

3,030

3,410 

3,170

3,650

3,650

4.150 

3,510

3,950

3,950 

3,900

4,050

3,460

3,950

3,950

3,650

3,750

3,950

3,560

106,250

3,542

-1,499

Adjusted for change in reservoir contents

Mean 

Of sin 

In.

272 

0.082 

0.09

1.18C 

0.356 

0.4C

Calendar year 1955; 

Water year 1955-56:

204 

0.062 

0.07

3,312 

1.00 

1.15

1,050 

0.317 

0.34

1,336 

0.404 

0.47

9,457 

2.86 

3.19

19,660 

5.94 

6.85

Observed

Max 27,300 Min 1,700 Mean 6,295 

Max 12,000 Mln 1,810 Mean 4,090

6,594 

1.99 

2.22

2,233 

0.675 

0.78

1,678 

0-507 

0.58

2,043 

0.617 

0.69

Adjusted

Mean 5,004 Cfsm 1.51 In. 30.53 

Mean 4,093 Cfsm 1.24 In. 16.83

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, of reservoirs in East and West Branches 

of Penobscot River.

Note. Stage-discharge relation affected by Ice, aquatic vegetation or high stages of yattawamkeag 

River all of year. No gage-height record Feb. 16-29,- discharge estimated on basis of pon'T-station 

records.
PENOBSCOT RIVER BASIN

Mattawamkeag River near Mattawamkeag, Maine

Location. Lat 45°30'20", long 68°18'05", on right bank at Gordon Lower Palls, 1 mile upstream from Mattakeunk Stream, 4 miles upstream from Mattawamkeag, Penobscot County, 

and 4| miles upstream from mouth.

Drainage area. 1,400 sq mi, approximately.

Records available. October 1934 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 230 ft (from topographic map).

Average discharge. 22 years, 2,372 cfs.

Extremes. Maximum discharge during year, 13,600 cfs May 2 (gage height, 9.30 ft); minimum, 50 cfs Jan. 3, 4 (gage height, 0.20 ft).

1934-56: Maximum discharge, 29,200 cfs Mar. 23, 1936 (gage height, 15.34 ft); minimum, 38 cfs Sept. 19, 1952 (gage height, 0.14 ft).

Remarks.--Records excellent except those for periods of ice effect or nc gage-height record, which are fair.

Rating table 

height,

, water year 1955-56, except periods of ice effect (gage 

in feet, and discharge, in cubic feet per second)

1.6

50

80

113

150

235

375

755

2.3 

3.0 

4.0 

6.0 

8.0 

9.3

1,270

1,820

2,860

6,080

10,500

13,600

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf sm

In.

Oct.

191

191

191

*179

179

162

154

154

175

170

166

162

154

150

143

132

120

124

124

120

139

150

154

154

158

158

162

166

166

Ib8

154

4,850

157

0.112

0.13

Nov.

154

154

158

175

183

213

270

320

310

300

275

265

260

255

255

250

245

235

225

215

210

205

196

190

186

180

180

176

174

170

6,584

219

0.156

0.17

Dec.

170

168

166

150

146

146

140

132

128

124

120

118

112

112

110

106

106

102

93

87

80

74

68

65

59

59

56

59

59 

62

65

3,242

105

0.075

0.09

Jan.

62

53

50

50

56

59

59

74

110

245

480

*790

1,160

1,530

1,980

2,510

2,550

2,510

2,360

2,190

1,980

1,820

1,740

1,630

1,520

1,420

1,340

1,270

1,190

1,120

1,040

34,948

1,127

0.805

0.93

Feb.

980

925

865

820

770

725

685

655

620

580

550

530

510

490

470

465

*460

455

440

435

435

430

430

430

435

460

525

595

600

16,770

578

0.413

0.45

Mar.

630

635

630

620

630

620

620

620

615

615

635

655

690

685

680

670

665

655

655

655

655

665

670

680

685

755

*750

735

725

720 

705

20,625

665

0.475

0.55

Apr.

700

700

705

825

1,270

1,780

2,290

2,860

3,450

4,130

4,590

4,700

5,060

5,290

5,890

7,100

9,860

12,300

13,200

13,200

13,100

12,600

12,000

11,200

10,500

9,770

9,360

9,720

10,600

12,200

210,950

7,032

5.02

5.60

May

13,400

15.500

13 ,200

12,700

12,300

11,800

*11,100

11,300

9,330

8,330

7,290

6,520

6,020

6,020

6,060

5,980

5,700

5,310

4,770

4,270

3,810

3,380

2,910

2,870

2,880

2,720

2,530

2,850

3,370

3,510 

3,340

209,070

6,744

4.82

5.56

June

3,350

5,480

3,540

3,080

2,850

2,640

2,380

2,180

2,140

2,180

2,420

2,660

2,640

2,460

2,210

2,010

1,820

1,620

1,400

1,230

1,100

*995

958

916

874

825

846

881

825 

785

57,093

1,903

1.36

1.52

Jvly

741

741

734

902

980

853

734

643

589

563

596

615

615

636

811

980

1,000

881

769

657

556

502

472

436

419

419

502

582

657 

692

727

21,004

678

C.484

0.56

Aug.

699

608

520

442

402

386

375

355

335

330

340

392

*502

532

496

466

430

397

375

370

397

430

408

375

340

320

316

302

307

302 

294

12,543

405

0.289

0.33

Sept.

289

280

316

340

360

340

330

316

294

271

248

231

222

222

262

298

320

335

345

360

386

460

563

576

550

538

532

502

472 

436

10,994

366

0.261

0.29

Calendar year 1955: Max 18,800 Min 56 Mean 2,321 Cfsm 1.66 In. 22.48

Water year 1955-56: Max 13,500 Min 50 Mean 1,663 Cfsm 1.19 In. 16.18

* Discharge measurement made on this day.

Note.--Mo gage-height record Nov. 7 to Dec. 2j discharge estimated on basis of recorded range in 

stage, weather records, and records for nearby stations. Stage-discharge relation affected by ice 

Dec. 3-24, Jan. 9-15, Jan. 21 to Apr. 15.
PENOBSCOT RIVER BASIN 33 

Piscataquis River near Dover-Foxcroft, Maine

Location. Lat 45°10'35", long 69°18'55", on left bank at Lows Bridge, 1 mile upstream 

from Black Stream and 4j miles upstream from Dover-Foxcroft, Piscataquis County.

Drainage -area. 297 sq ml.

Records available. August 1902 to September 1956.

Gage.--Water-stage recorder. Datura of gage Is 358.1 ft above raean sea level, datum of 

1929. Prior to July 20, 1930, staff gage at same site and datum.

Average discharge.--54 years, 585 cfs.

Extremes. Maximum discharge during year, 5,150 cfs Apr. 30 (gage height, 7.68 ft); minimum, 23 cfs Oct. 2, 3 (gage height, 1.62 ft).

1902-56: Maximum discharge, 21,500 cfs Apr. 23, 1923 (gage height, 17.67 ft, from 

graph based on gage readings), from rating curve extended above 13,000 cfs by logarithmic plotting; minimum, 5 cfs Aug. 6, 1905, Nov. 22, 1908.

Remarks. Records excellent except those for periods of ice effect, which are fair. Low 

flow regulated by operation of powerplant above station.

Revisions (water years).--WSP 279: 1902. WSP 1171: Drainage area. WSP 1201: 1903-17, 

1918-30(M), 1934-35. WSP 1301: 1909(M).

Rating table, water year 1955-56, e 

height, in feet, and discharge

119

209

415

cept periods of ice effect

in cubic feet per second)

3.5 700

4.0 1,060

5.0 1,990

7.0 4,320

7.4 4,800

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

S

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsro

In.

Oct.

*24

23

23

37

19

96

94

94

99

92

41

32

31

30

29

29

29

30

29

29

29

27

28

30

41

40

38

37

33

*31

39

1,363

44.0

0.148

0.17

Nov.

1.650

1,710

765

526

548

765

772

593

487

406

366

366

370

352

366

334

370

392

309

275

215

255

210

238

230

200

178

162

166

13,924

464

1.56

1.74

Dec.

140

116

112

106

106

106

106

106

*106

106

106

106

106

106

104

104

102

102

99

96,

96

96

94

94

94

94

92

90

83

79

76

3,129

101

0.340

0.39

Jan.

*74

72

70

67

65

63

70

99

170

370

905

1,890

2,520

1,590

1,230

905

715

565

*465

435

395

365

335

325

310

285

255

245

215

*200

196

15,266

493

1.66

1.91

Feb.

188

180

178

174

170

168

168

166

166

166

166

166

162

158

158

156

152

150

152

150

150

146

146

146

150

156

166

162

*156

4,672

161

0.542

0.58

Mar.

152

150

146

140

138

136

136

132

132

136

140

142

140

138

138

136

132

128

124

122

120

120

120

120

120

122

122

*124

124

128

4,086

132

0.444

0.51

Apr.

130

136

156

168

330

795

1,220

1,330

1,220

1,120

1,070

1,080

1,210

1,370

1,350

1,590

3,190

3,760

2,910

2,400

2,230

1,930

1,750

1,500

1,430

1,480

1,680

3,660

3,810

4,730

50,815

1,694

5.70

6.36

May

4.010

*3,020

2,880

2,690

2,820

2,620

 2,310

1,890

1,610

1,530

1,500

1,420

1,970

2,680

2,090

1,730

1,540

1,310

1,100

972

849

765

700

732

629

536

635

1,770

1,230

912

800

51,250

1,653

5.57

6.42

June

1,200

1,970

1,440

1,530

1,380

1,230

942

732

877

972

928

821

668

548

460

379

370

281

216

199

193

190

177

165

174

171

143

141

*141

127

18,765

626

2.11

2.35

July

119

116

122

109

92

87

94

119

162

455

330

227

174

196

406

289

209

168

143

119

102

94

99

127

269

397

285

190

155

132

106

5,692

184

0.620

0.71

Aug.

96

92

79

70

61

59

56

56

54

*54

83

104

83

74

74

65

56

56

56

59

65

56

56

53

67

81

72

68

68

79

87

2,139

69.0

0.232

0.27

Sept.

109

124

177

216

Tee

138

119

99

87

74

68

67

61

59

.58

59

65

90

92

90

152

174

141

130

177

193

171

146

130

116

3,550

118

0.397

0.44

Calendar year 1955: Max 8,660 Mln 14 Mean 512 cfsro 1.72 In. 23.41

Water year 1955-56: Max 4,790 Mln 23 Mean 477 Cfsro 1.61 In. 21.8^

Peak discharge-(base, 4,000 cfs).--Apr. 18 (1 a.m.) 4,120 cfs (6.83 ft); Apr. 30 (11 a.m.) 5,150 

cfs (7.68 ft).

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Nov. 20-23, 25-27, Nov. 29 to Apr. 6.
34 PENOBSCOT RIVER BASIN

Sebeo River at Sebeo, Maine

Location. Lat 45°16'10", long 69°06'45", on right bank at Sebeo, Piscataquis County, 

1,000 ft downstream from highway bridge and dam at outlet of Sebeo La'te.

Drainage area. 327 sq mi.

Records available.--October 1924 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 296.3 ft above mean sea level, datum of 

1929. Prior to June 22, 1942, water-stage recorder on opposite bank 60 ft downstream 

at same datum.

Average discharge.--32 years, 611 cfs (unadjusted).

Extremes. Maximum discharge during year, 2,920 cfs May 1 (gage height, 6.55 ft); minimum, 82 cfs Oct. 31 (gage height, 1.99 ft).

1924-56: Maximum discharge, 11,400 cfs Mar. 20, 1936 (gage height, 14.46 ft), from 

rating curve extended above 6.000 cfs on basis of velocity-area studies; minimum, 

about 2 cfs Oct. 14-17, 1930 (gage height, 0.87 ft), when gates in dan were closed.

Remarks.--Records excellent. Flow partly regulated by Sebec Lake and other reservoirs 

above station.

Revisions (water years).--WSP 1171: Drainage area, 1936(M). WSP 1301: 1925.

Rating table, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

2.0 

2.2 

2.5 

3.0 

3.5

84

139

251

495

810

4.0 

5.0 

6.0 

6.5

1,140

1,790

2,500

2,880

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

l 

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

3ft 342

319

301

287

282

282

274

264

256

235

218

192.

177

163

156

159

153

153

136

136

124

118

136

109

112

109

102 

*96

 

6,191

200

-142

Nov.

170 

?BT

274

278

282

292

310

310

319

319

324

333

333

328

333

328

337

333

333

328

333

337

328

333

319

305

305

292

292 

£ 96

9,268

309

+136

Dec.

'252 296

278

269

269

269

264

264

260

256

247

243

239

230

226

226

222

214

203

195

195

170

166

163

170

180

159

156

153 

156

155

6,773

218

-164

Jan.

153 

146

142

146

142

139

136

166

173

243

292

314

333

385

415

435

440

456

446

440

435

430

435

440

446

440

435

430

430

425

425

10,313

333

+313

Feb.

420 4TO"

415

410

405

405

410

405

400

390

380

380

380

376

366

366

356

352

352

342

333

333

328

328

328

333

319

*319

514

10,655

367

-118

Mar.

'STTS

305

305

301

296

296

305

305

296

292.

292

296

296

305

301

305

301

292

287

282

282

282

278

274

269

264

269

274 

264

264

8,997

290

-135

Apr.

264 

260

256

264

310

324

352

376

395

405

420

425

380

410

468

724

1,020

1,390

1,670

1,810

1,850

1,840

1,790

1,730

1,660

L, 580

1,550

1,730

2,030

2.500

30,183

1,006

+252

May

2.880 

*2,820

2,650

2,400

2,300

2,130

1,980

1,840

1,670

1,350

690

"604 445

656

771

838

919

912

912

932

852

838

831

824

771

731

724

873

958

952

971

39,024

1,259

+454

June

1,050 

1,160

1,220

1,390

1,650

1,580

1,470

1,330

1,290

1,260

1,240

1,190

765

512

522

528

522

539

517

490

473

462

446

435

400

3B5

465

574

*562

556

24,983

833

-84

July

550 

539

500

446

440

270

130

130

133

133

136

136

136

142

139

139

142

142

146

146

149

153

156

159

166

166

170

173

173

173

173

6,486

209

-106

Aug.

173 

170

173

166

170

173

173

177

177

*180

184

184

184

184

184

184

184

184

184

188

280

478

270

159

159

159

159

159

156

156

156

5,867

189

+33

Sept.

159 

159

156

159

159

163

166

166

166

170

170

170

170

173

173

173

173

173

170

170

170

170

170

166

360

468

468

462

456

446

6,674

222

+13

Adjusted for change In reservoir contents

Mean 

Cfsm 

In.

58 

0.177 

0.20

445 

1.36 

1.52

Calendar year 1955: 

Water year 1955-56:

54 

O.L65

0.19

646 

1.98 

2.28

249

0.761 

0.82

155 

0.474 

0.55

1,258 

3.85 

4.30

1,713 

5.24

6.04

Observed

Max 4,140 Min 89 Mean 577 

Max 2,880 Mln 92 Mean 452

749 

2.29 

2.56

103 

0.315 

0.36

222 

0.679 

0.78

235

0.719 

0.80

Adjusted

Mean 547 Cfsm 1.67 In. 22.69 

Mean 490 Cfsm 1.50 In. 20 40

* Discharge measurement made on this day.

t Change Ln contents, equivalent In cubic feet per second, In Sebec Lake and Wilson Pond.
PENOBSCOT RIVER BASIN 35

cation. --Lat 45° 17 '05" 

quls County, ->nd 8j

Pleasant River near Mllo, Maine

, long 69° 00 '25", on left bank 2 miles northeast of Mllo, Piscatamiles upstream from mouth.

Drainage area. 322 sq ml.

Records available. June 1920 to September 1956.

Gage. Water-stage recorder. Altl - le of gage Is 302 ft ('from river-profile map). Prior 

to June 17, 1929, chain gage at Snows Bridge, 2 miles downstream at datum 32 ft lower.

Average discharge. --36 years, 692 cfs.

Extremes . Maximum discharge during year, 5,030 cfs Apr. 30. (gage height, 5.86 ft); maximum gage height, 8.79 ft Jan. 13 (Ice jam); minimum dally discharge, 90 cfs Jan. 6.

1920-56: Maximum discharge, 24,400 cfs Apr. 30, 1923 (gage height, 14.33 ft, from 

floodmarks, site and datum then in use), from rating curve extended above 5,50? cfs; 

minimum, 15 cfs Aug. 17, 1944 (gage height, 1.21 ft).

Remarks. Records excellent except those for periods of ice effect, which are fair. Plow 

partly regulated by power development at Brownville and by small storage dams above 

station.

Revisions (water years 1.--WSP 1301: 1921-22(M), 1924-27(M), 1929(M).

Rating tables, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Jan. 12 Jan. 13 to Sept. 30

1.6 

1.8 

2.0 

2.5

71

128

198

460

3.0 

3.5 

3.8

825

1,340

1,700

1.7

1.8 

2.0 

2.5 

3.0

98

128

202

480

875

3.5 1,370

4.0 1,990

5.0 3,520

5.7 4,740

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12 

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

187

206

202

187

172

165

172

236

309 

524

227

194 

165

161

158

158

161

165

187

191

187

198

215

215

202

202

202

198

194

183

180

6,103

197

0.612

0.71

 Nov.

860

1.650

1,130

834

737

761

825

777

699 

617

560

540 

526

480

473

460

445

430

405

397

370

350

340

320

305

290

285

270

260

250

16,646

555

1.72

1.92

Dec.

230

220 

205

200

198

194

190

188

*180 

176

168

166 

160

160

158

154

148

140

138

136

128

126

120

116

110

108

100

98

98

98

4,706

152

0.472

0.57

Jan.

95

93 

93

93

93

90

104

*128

160 

198

315

670 

2,150

1,800

1,490

1,140

920

785

685

615

550

485

450

415

400

375

360

350

335

330

320

16,087

519

1.61

1.86

Feb.

315

zW

310

305

305

300

300

295

290 

290

280

270

265

260

255

250

245

245

245

240

240

235

235

230

225

230

230

*230

230

7,660

264

0.820

0.88

Mar.

230

225 

225

225

230

230

235

240 240" 

240

240

240 

235

235

225

225

220

215

215

215

220

215

210

205

205

200

*200

200

198

200

6,836

221

0.686

0.80

Apr.

265

245 

240 ?6~0~

330

415

520

685

635 

615

590

585 

660

770

930

1,290

2,520

3,100

2,620

2,130

1,960

1,800

1,660

1,450

1,320

1,290

1,410

2,680

3,250

4.670

40,895

1,363

4.23

4.72

May

4.550

5,210 

*2,760

2,600

2,560

2,440

2,350

2,060

1,750 

1,610

1,600

1,570 

2,120

5,490

5,040

2,340

2,080

1,780

1,480

1,300

1,180

1,070

1,150

1,550

1,150

974

947

2,120

1,940

1,470 

1,260

61,021

1,968

6.11

7.04

June

1,580

2.170 

1,920

1,800

1,670

1,420

1,150

974

1,210 

1,280

1,180

994 

866

726

655

599

528

467

405

576

542

542

326

304 2'99

304

288

*282

255

250

24,760

825

2.56

2.86

July

236

245 

255

240

207

194

194

198

256 

455

417

548 

277

348

726

606

436

557

277

231

202

186

2T32"

226

315

394

320

266

240

216

*190

9,220

297

0.922

1.06

Aug.

165

165

154

158

128

1Z5

119

116

«&

Z45

28Z 

216

20Z

Z02

194

161

148

144

194

202

177

158

144

186

Z16

194

177

169

173 2:>z

5,513

171

0.551

0.61

Sept.

Z40

250 

293

359

299

245

221

194

169 

161

151

141 

141

161

161

165

169

198

Z07

Z07

542

565

315

288

Z99

304

Z72

240

212

Z02

6,971

233

0.724

0.81

Calendar year 1955: Max 7,200 Hln 76 Mean 671 Cfsm 2.08 In. 28.33

Water year 1955-56: Max 4,670 Mln 90 Mean 563 Cfsm 1.75 In. 23.84

Peak discharge (base. 5.700 cfs).--Apr. 30 (3 p.m.) 5,050 cfs (5.86 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 17-19, Nov. 21 to Apr. 15.
36 PENOBSCOT RIVER BASIN

Piscataquis River at Medford, Maine

Location.--Lat 45°15'40", long 68°52'05", on left bank if miles southwest of Medford, 

Piscataquis County, and 3-J miles downstream from Pleasant River.

Drainage area. 1,161 sq mi .

Records available.--June 1924 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 248.68 ft above mean sea level, datum of 

1929. Prior to Aug. 14, 1929, staff gage at site if miles downstream at different 

datum.

Average discharge.--32 years, 2,280 cfs.

Extremes. Maximum discharge during year, 13,500 cfs Apr. 30 (gage height, 7.81 ft)- minimum, 319 cfs Oct. 17 (gage height, 1.79 ft).

1924-56: Maximum discharge, 50,200 cfs Mar. 20, 1936 (gage height, 15.07 ft), from 

rating curve extended above 20,000 cfs by logarithmic plotting; minimum, 99 cfs 

Oct. 28, 1947 (gage height, 1.28 ft).

Maximum stage known, 20.8 ft May 1, 1923, at former site l£ miles downstream.

Remarks.--Records excellent except those for periods of ice effect, which are fair. Some 

regulation for power and log-driving by lakes above station.

Revisions (water years). W3F 1171: Drainage area. WSF 1231: 1936. WSP 1301- 

1925-291M).

Rating table, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubi: feet per second)

324

440

840

1,340

1,980

2,750

4,780

7,240

14,300

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

21

28

29

30

31

Total

Mean

Cf sm

In.

Oct.

678 

555

460

510

612

489

580

795

768

714

660

580

524

538

510

330

422

363

352

352

352

374

398

398

392

386

398

386

380 

363

563

14,982

483

0.416

0.48

Nov.

1,830 

4,980

3,090

2,260

1,750

2,210

2,380

2,160

1,980

1,670

1,640

1,590

1,320

1,420

1,520

1,480

1,450

1,480

1,500

1,220

1,090

950

875

820

785

750

725

705

685 

680

46,995

1,566

1.35

1.51

Dec.

660 

650

645

630

620

605

580

580

575

575

565

560

550

545

545

540

530

525

515

510

510

505

495

490

480

475

470

455

445 

440

455

16,705

539

0.464

0.53

Jan.

435 

440

440

440

440

435

455

*440

495

660

1,840

3,500

4,670

5.410

4,740

3,830

2,930

2,450

2,120

1,910

1,780

1,660

1,580

1,480

1,420

1,340

1,270

1,220

1,170 

1,110

1,070

53,160

1,715

1.48

1.71

Feb.

1.050 

1,030

1,020

1,000

980

970

950

940

950

930

920

895

885

875

865

850

850

860

860

8 5O

840

840

830 '830

840

850

885

*940

950

26,275

906

0.780

0.84

Mar.

920 

910

910

895

885

875

865

865

860

860

850

840

840

850

820

820

820

B20

830

840

840

830

820

820

830

830

805

+ 795

770 

750

755

25,995

859

0.723

0.83

Apr.

'8~2"0~ 775 

875

970

1,080

1,980

2,550

2,750

2,750

2,650

2,560

2,550

2,680

3,300

3,660

4,960

7,990

10,700

9,490

8,260

7,520

6,870

6,440

5,860

5,550

5,460

5,380

7,660

10,500 

12 . 500

147,070

4,902

4.22

4.71

Hay

12.900 

10,200

*8,960

8,450

8,390

7,990

7,320

6,580

5,740

5,220

4,450

3,850

4,460

6,750

6,240

5,150

4,960

4,450

3,930

3,530

3,260

2,980

2,970

4,490

3,070

2,680

2.640

5,230

5,120 

4,100

*3,560

169,670

5,473

4.71

5.43

June

3,740 

5.060

5,030

4,760

4,990

4,690

4,100

3,480

5,520

5,990

5,850

3,540

2,830

2,210

1,950

1,830

1,560

1,470

1,330

1,240

1,180

1,160

1,140

1,110

1,080

1,100

1,060

1,060

*1.050 

1,060

76, 170

2,539

2.19

2.44

July

1,050 

1,030

1,040

1,020

960

870

566

545

604

970

1,250

1,050

867

876

1,460

1.470

1,100

894

768

669

604

559

545

580

752

1,090

1,110

912

736 

705

656

27,298

881

0.759

0.88

Aug.

596 

573

559

475

410

410

398

392

392

*404

524

644

604

552

538

545

551

454

423

461

489

596

628

505

489

558

558

517

489 

503

505

15,683

506

0.456

0.50

Sept.

573

580

620 78'6

795

7O5

669

596

538

503

524

461

428

434

468

489

503

580

596

580

732

831

644

660

795

876

894

921

1.010 

930

19,721

657

0.566

0.63

Calendar year 1955: Max 22,200 Win 236 Mean 2,123 Cfsm 1.83 In. 24.81

Water year 1955-56 : Max 12,900 Win 330 Mean 1,748 Cfsm 1.51 In. 20.49

Peak discharge (base. 15,000 cfs).--Apr. 30 (11 p.m.) 13,500 cfs (7.81 ft).

* Discharge measurement made on this day.

Mote. Stage-discharge relation affected by ice Nov. 21 to Jan. 12, Jan. 17 to
PENOBSCOT RIVER BASIN 37 

Penobscot River at West Enfield, Maine

Location. Lat 45°14'15", long 68°39'10", on left bank at highway bridge, 1,000 ft downstream from Piscataquis River and 1 mile southwest of West Enfield, Penobscot County.

Drainage area.--6,600 sq mi, approximately (including about 240 sq mi drained by Chamberlain Lake through Telos Canal).

Records available. November 1901 to September 1956. Records prior to 1910, republished 

with some revisions In WSP "79.

Gage. Water-stage recorder. Datum of gage is 125.94 ft above mean sea level, datum of 

1929. Prior to Dec. 11, 1912, chain gage at same site and datum.

Average discharge. 54 years (1902-56), 11,550 cfs (unadjusted).

Extremes.--Maximum discharge during year, 47,000 cfs May 1 (gage height, 12.21 ft); minimum 

daily, 3,340 cfs Dec. 25; minimum gage height, 1.99 ft Oct. 29.

1901-56: Maximum discharge, 153,000 efs May 1, 1923 (gage height, 25.15 ft), from 

rating curve extended above 88,000 cfs by logarithmic plotting; minimum, 1,630 cfs 

Oct. 29, 1905 (gage height, 1.0 ft).

Remarks. Records excellent except those for period of ice effect, which are good. Flow 

regulated by several reservoirs above station (see p. 41).

Cooperation.--Water-stage-reeorder graph furnished by T, W. Clark, hydraulic engineer, of 

Old Town until Aug. 31; thereafter, by Bangor Hydro-Electric Co.

Revisions (water years) .--WSP 1171: 1940. WSP 1231: 1902-13.

Discharge, in cubic feet cond, water year October 1955 to September 19E6

Day Oct. Nov. Dec. Apr. May June July Aug.

Tbtal 

Mean 

(t)

240,760

7,766

174,140

5,617

-2,364

667,620

2,250

3,625

695,100

22,420

+12,714

314,590 

10,480 

+1,525

184,980 

5,967 

-1,590

153,960

4,966

-1,798

152,910

5,097

-1,486

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

1,498 

0.227 

0.26

4 , 041 

0.612 

0.68

Calendar year 1355: 

Water year 1955-56:

946 

0.143 

0.16

7,833 

1.19 

1.37

3,071 

0.465 

0.50

3,253 

0.493 

0.57

25,880 

3.92 

4.37

35,130 

5.32 

6.13

Observed

Max 69,200 Min 3,340 Mean 12,270 

Max 46,200 Min 3,340 Mean 8,695

12 , 000 

1.82 

2.03

4,377 

0.663 

0.76

3,168 

0.480 

C.55

3,611 

0.547 

0.61

Adjusted

Mean 10,950 Cfsm 1.66 In. 22.50 

Mean 8,736 Cfsm 1.32 In. 17.99
38 PENOBSCOT RIVER BASIN

Passadumkeag River at Lowell, Maine

Location.--Lat 45°11'00", long 68°28'25", on right bank at Lorfell, Penobscot County, half 

a mile downstream from dam and highway bridge and 10 miles upstream from mouth.

Drainage area. 299 sq mi.

Records available.--October 1915 to September 1956.

Gage. Water-stage recorder. Datum of gage is 151.3 ft abo'/e mean sea level, datum of 

1929. Oct. 1, 1915, to Sept. 30, 1917, chain gage and staff gage at same site and 

datum. Oct. 1, 1917, to Hov. 30, 1921, chain gage at site on left bark 400 ft downstream from highway bridge at different datum.

Average discharge. 41 years, 491 cfs.

Extremes. Maximum discharge during year, 1,690 cfs Apr. 21 (gage height, 4.56 ft); maximum gage height, 4.92 ft Mar. 17 (back " - - - - ------

Jan. 7.

ckwater from ice); minimum daily discharge, 54 cfs

1915-56: Maximum discharge, 5,680 cfs May 2, 1923 (gage height, 9.40 ft); minimum, 

about 5 cfs several times in July and August 1921 (gates in dam closed).

Remarks. Records excellent except those for periods of ice effect, which are fair. 

Revisions. WSP 821: Drainage area.

Rating table, water year 1955-56, except periods of loe effect (gage 

height, in feet, and discharge, In cubic feet per second)

1.1 

1.5

114

205

2.0

2.5 

3.0 

4.0

4.6

365

560

780

1,340

1,720

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

99

~99 101

*97

95

92

90

92

97

101

101

99

93

88

85

81

78

76

76

15

80

85

86

90

92

92

93

92

93

92

90

2,800

90.3

0.302

0.35

Nov.

108

122

134

142

144

155

174

192

195

187

182

179

177

177

172

167

169

172

174

172

162

150

140

134

130

122

114

110

104

102

4,562

152

0.508

0.57

Dec.

 55 97

92

88

81

78

78

78

76

76

75

75

75

75

73

73

73

72

72

70

68

67

65

65

62

62

62

62

61

59

58

2,263

7*.0

0.244

0.28

Jan.

59

59

58

56

55

55

54

65

83

102

150

210

*280

405

520

540

512

468

415

369

324

290

264

240

225

210

192

184

180

172

166

6,962

225

0.753

0.84

Feb.

160

156

156

152

150

150

150

150

150

150

150

150

148

148

148

148

144

142

140

138

138

138

136

136

136

134

132

150

*158

4,238

146

0.488

0.53

Mar.

166

160

150

140

150

156

138

136

152

180

188

196

188

184

184

188

190

188

184

180

180

174

178

184

200

*196

189

182

179

169

172

5,401

174

0.582

0.67

Apr.

172

172

177

245

384

464

572

640

680

721

770

815

845

900

915

1,000

1,290

1,520

1,630

1,680

1,680

1,630

1,580

1,510

1,430

1,360

1,300

1,330

1,380

1 ' 55C

30,342

1,010

3.38

3.77

May

,620

,640

,630

,600

,580

* ,520

,470

,390

,320

,230

,140

,080

,030

1,010

990

996

990

966

920

865

810

745

703

712

721

708

730

855

915

948

960

33,794

1,090

3.65

4.21

June

954

910

815

708

672

698

676

662

690

721

775

780

780

*740

698

662

616

536

524

540

528

556

576

576

588

596

592

592

584

568

19,913

664

2.22

2.48

July

544

524

496

430

358

350

361

376

380

388

384

373

358

399

512

572

548

460

380

314

267

235

216

232

267

293

304

307

304

293

267

11,492

371

1.24

1.43

Aug.

255

258

255

252

246

244

238

232

*226

229

235

232

226

218

210

202

197

189

189

182

174

169

165

157

153

149

147

144

151

172

153

6,249

202

0.676

0.78

Sept.

149

147

142

136

130

124

124

122

120

114

112

110

TI2

114

128

132

140

147

153

157

160

157

153

153

153

151

147

140

134

128

4,089

136

0.455

0.51

Calendar year 1955: Max 2,460 Min 58 Mean 521 Cfsm 1.74 In. 23.69

Water year 1955-56: Max 1,680 Min 54 Mean 361 Cfsm 1.21 In. 16.42

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Nov. 21-23, Nov. 25 to Jan. 14, Jan. 19, Jan. 24 

to Mar. 25 (no gage-height record Feb. 20-29; discharge estimated on basis of recorded range in 

stage, 1 discharge measurement, and records for nearby stations).
PENOBSCOT RIVER BASIN 39

Penobscot River at Passadumkeag, Maine

Location. Lat 45 0 10'55", long 68°37'20", on left bank at Passadumkeag, Penobs^ot County, 

at head of Passadumkeag Rips, 1,200 ft downstream from Passadumkeag River.

Drainage area.--7.OOP sq mi, approximately (including about 240 sq mi drained by Chamberlain Lake through Telos Canal).

Records available. October 1938 to September 1956. October, November 1938 moithly discharge only, published in WSP 1301.

Gage. Water-stage recorder. Datum of gage is 123.6 ft above mean sea level, unadjusted. 

Average discharge. 18 years, 12,240 cfs (unadjusted).

Extremes. Maximum discharge during year, 48,900 cfs May 1 (gage height, 8.87 ft); minimum daily, 3,410 cfs Dec. 25.

1938-56: Maximum discharge. 126,000 cfs Apr. 14. 1940 (gage height, 13.62 ft); minimum, 2,600 cfs Sept. 1, 1941 (gage height, 2.44 ft).

nemarks. Records excellent except those for periods of ice effect, which are good. Flow 

regulated by several reservoirs above station (see p. 41).

Revisions (water years).--WSf 1171: 1940.

Rating tables, water year- 1955-56, except periods of ice effect (gage

height, in feet, and discharge in cubic feet per second)

Oct. 1 to Apr. Apr. 8 to Sept. 30

2.7 

3.0 

4.0 

5.0 

5.8

3,370

4,060

7,500

12,800

18,400

6.0 

7.0 

8.0 

8.9

19.7OO 

28,20O 

38,500 

49,300

Note. Same as 

preceding table 

below 5.0 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

 total

Mean

(t)

Oct.

5,290 

5,080

5,080

4,650

4,780

4,780

4,750

4,940

5,260

5.040

5,040

4,940

4,680

4,560

4,780

4,450

4,360

4,650

4,780

4,680

4,590

4,720

4,170

4,750

4,750

4,530

4,980

4,530

4,140

4,500

4,680

146,910

4,739

-3,149

Nov.

5,220 

IQ.OOO

8,450

7,870

6,050

6,970

7,200

7,540

7,040

6,630

6,480

7,010

6,050

5,940

6,150

6,150

6,010

6,520

6,410

6,010

5,180

5,430

5,430

5,400

5,180

4,780

4,480

4,220

4,140

5,990

183,930

6,131

-1,919

Dec.

5.920 

3,870

3,840

5,800

5,730

5,750

5,700

5,700

3,700

5,680

3,640

5,610

5,590

5,550

5,550

5,520

3,520

5,500

5,480

5,460

3,460

3,440

3,500

5,460

3,410

3,440

3,480

3,460

3,460

3,480

3,520

111,200

3,587

-2,542

Jan.

5.520 

5,550

3,570

3,610

5,660

5,770

5,940

4,110

4,590

6,560

8,590

15,400

16,900

18,400

17,900

15,000

15,200

11,600

9,900

9,550

8,590

8,150

7,660

7,510

7,040

6,850

6,700

6,590

6,480

6,440

6,440

255,550

8,175

+67

Feb.

6,480 

6,560

6,590

6,560

6,650

6,670

6,670

6,590

6,650

6,480

6,740

6,190

6,080

5,850

5,720

5,610

5,470

5,400

5,550

5,290

5,520

5,560

5,400

5,450

5,490

5,580

5,650

5,720

5,750

173,240

5,974

-2,711

Mar.

5,790 

5,730

5,700

5,660

5,650

5,640

5,610

5,610

5,650

5,740

5,720

5,710

5,680

5,680

5,690

5,680

5,650

5,770

5,940

6,090

6,180

6,200

6,230

6,250

6,510

6,320

6,350

6,190

5,870

5,580

5,450

181,280

5,848

-2,364

Apr.

5,400 

5,466

5,470

5,830

7,620

10,600

15,000

17,500

17,900

18,100

17,900

17,800

18 , 100

19,500

19,600

21,600

28,600

57,700

40,900

59,200

57 , 500

56,000

54,600

52,300

30,700

28,900

27,800

31,100

37,600

43,400

709,220

23,640

+5,625

May

48.500 

44,300

40,200

38,500

57,500

57 , 500

*55,400

52,600

28,800

26,000

25,400

21,000

20,300

24,500

25,200

25,700

22,500

20,500

18,800

*17,500

15,500

14,600

14 , 000

14,800

14,400

15,200

12,900

15,800

19,100

17,800

15,800

755,400

24 , 500

+12,714

June

15,500 

17,600

17 , 900

16,600

16,900

15,900

14,600

15,700

12,700

14,400

14,600

14,500

15,500

12,500

*11,600

11,200

9,840

8,880

8,990

8,540

8,040

,830

,660

,230

,040

,270

,010

,080

,010

6,890

342,610

11,420

+1,525

July

6,630 

6,820

6,820

6,780

6,520

7,270

6,950

6,520

6,480

6,590

7,270

6,890

6,650

6,850

8,510

8,400

7,660

7,420

6,950

6,260

5,790

5,450

5,550

5.290

5,540

5,790

6,050

6,050

5,790

5,830

6,010

202,880

6,545

-1,590

AV<5.

5,97O 

6.500

6,120

5,790

5,580

5,220

5,400

5,550

*4,980

4,980

5,180

5,760

5,900

5,940

5,550

5,540

5,450

5,150

5,120

5,120

5,180

5,220

5,220

5,450

5,080

5,290

5,010

4,880

4,940

5,080

5,400

166,870

5,383

-1,798

Sept.

5,080 

5,220

4,780

4,500

5,430

5,540

5,690

5,550

5,260

4,980

4,840

4,680

4.500

4,650

4,910

4,810

5,120

5,400

5,690

5,560

5,760

6,050

5,970

6,120

5,900

6,150

6,150

6,050

6,250

6,230

162,180

5,406

-1,486

Adjusted for change in reservoir contents

Mean 

Cfsm

1,590 

0.227 

0.26

4,212 

0.602 0.6"

Calendar- year 1955: 

Water year 1955-56:

1,045 

0.149 

0.17

8,240 

1.18 

1.56

5,265 

0.466 

0.50

5,484 

0.498 

0.57

27,260 

3.89 

4.34

37,010 

5.29 

6.10

Observed

Max 70,400 Min 3,410 Mean 12,890 

Max 48,300 Min 5,410 Mean 9,254

12,940 

1.85 

2.06

4,955 

0.708 

0.82

3,585 

0.512 

0.59

3,920 

0.560 

0.62

Adjusted

Mean 11,570 Cfsm 1.65 In. 22.43 

Mean 9,295 Cfsm 1.33 In. 18.06

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per- second, of reservoirs in West and East Branches 

of Penobscot River, also Sebec Lake and Wilson Pond In Plscataquis River basin.

Note.--Stage-discharge relation affected by Ice Nov. 26 to Jan. 12, Jan. 16 to Apr. 7 (no gageheight record Feb. 20 to Mar. 26; discharge computed on basis of records at Penobscot River at West 

Enfield and Passadumkeag River at Lowell).
40 PENOBSCOT RIVER BASIN

Kenduskeag Stream near Kenduskeag, Maine

Location. Lat 44°53'50", long 68°53'00", on right bank 300 ft upstream from highway bridge, 

1.8 miles downstream from Black Stream, and 2.9 miles south of Kenduskeag, Penobscot 

County-.

Drainage area.--178 sq mi.

Records available. October 1941 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 97 ft (from topographic map).

Average discharge. 15 years, 310 cfs.

Extremes. Maximum discharge during year, 3,490 cfs Apr. 18 (gage height, 9.97 ft); minimum, 2.6 cfs Oct. 5.

1941-56: Maximum discharge, 6,440 cfs Sept. 12, 1954 (gage height, 14.83 ft); minimum, 1.0 cfs Sept. 30, Oct. 1, 1948 (gage height, 1.09 ft).

Remarks. Records good except those for periods of ice effect, which are fair. An artificial cut has been made through a low divide between Souadabscook Stream and Black 

Stream which enters Kenduskeag Stream 1.8 miles above station. During high stages of 

Souadabscook Stream part of its flow passes through the cut into Kenduskeag Stream; at 

low stages of Souadabscook Stream all flow continues down its own channel.

Rating table, water year 1955-56, except periods of 1 e effect (ga^e

height, In feet, and discharge, In cubic feet per second)

(Shifting-control method used Oct. 1-28, July 24 to Sept. 5)

153

3.0 

4.0 

5.0 

6.0 

8.0 

10.0

263

560

955

1,380

2,380

3,510

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Oct.

4. 1

4.4

*4. 1

3.4

5. 1

3.4

4. 1

5.4

7.0

8.5

8.5

7.5

6.0

5.7

5.0

5.4

5.4

6.0

6.5

7.0

9.5

12

12

14

13

12

13

12

12

12

14

246.0

7.94

0.045

0.05

Nov.

290

746

495

347

266

317

425

386

311

234

203

S56

234

198

196

186

201

244

207

190

165

136

120

104

106

91

76

63

56

52

6,901

230

1.29

1.44

Dec.

46

42

40

38

36

35

34

33

33

32

32

32

31

31

31

31

31

30

30

30

31

31

31

31

31

31

30

29

28

27

27

1,005

32.4

0.182

0.21

Jan.

27

26

26

26

26

25

25

29

52

152

710

1,120

,570

,780

,86O

,62O

,230

955

535 " 400

320

275

240

194

160

136

112

97

84

76

70

13,958

450

2.53

2.92

Feb.

68

67

66

66

66

66

66

66

66

66

71

76

77

76

76

76

75

72

70

67

66

64

63

63

64

68

*83

91

94

2,061

71.1

0.399

0.43

Mar.

90

83

89

102

120

118

110

104

102

110

132

150

148

142

136

130

128

126

124

124

126

130

130

130

130

128

124 lie

*112

120

136

3,752

121

0.680

0.78

Apr.

152

168

178

194

235

340

670

1,340

2.O5O

2,020

1,980

1,960

1,960

1,950

1,990

2,280

2,970

5,4OO

2,790

2., 100

1,710

1.44O

1,290

1,180

1,130

1,000.

911

1,060

1,340

1,700

43,488

1,450

8.15

9.09

May

1,580

1,160

*9O7

*790

1,000

947

718

570

453

381

333

298

314

425

398

333

314

278

234

203

179

155

159

369

338

253

255

915

758

529

410

15,956

515

2.89

3.33

June

416

341

273

239

251

216

184

159

149

232

*296

246

188

140

118

112

96

73

62

55

50

50

49

48

58

68

61

59

59

54

4,402

147

0.826

0.92

July

48

44

54

48

40

33

31

34

40

66

77

59

48

67

450

320

196

126

86

59

47

Aug.

29

24

22

19

15

*14

13

13

14

17

19

18

16

12

11

10

9.0

8.5

3.5

3.5

8.5

40 1 S . 0

3U

40

72

112

122

91

59

43

33

2,603

84.0

0.472

0.1,4

7.5

7.5

8.0

8.0

8.5

8.5

9.5

10

10

394.5

12.7

0.071

0.08

Sept.

15

17

18

18

17

14

17

17

16

14

14

13

14

15

El

28

27

31

34

32

31

32

32

31

31

36

37

33

28

26

709

23.6

0.133

0.15

Calendar year 1955: Max 2,400 Mln 2.3 Mean 285 Cfsm 1.60 In. 21.73

Water year 1955-56: Max 3,400 Mln 3.1 Mean 261 Cfsm 1.47 In. 19.94

Peak discharge (base 1,600 cfs J_.--Jan. 15 (3 to

1,840 cfs (6.95

.m.) 1, 

3,490 cfs (9.97 ft); Apr. 30 (7 p. ft).

* Discharge measurement made on this da

Note.--Stage-discharge relation affected bv Ice Nov. 22, 23, Nov. 

Apr. 15.

910 cfs (7.10 ft); Apr. 18 (7 a.
PENOBSCOT RIVER BASIN 

Reservoirs in Penobscot River basin, Maine

41

Chesuncook, Rlpogenus, and Caribou Lakes and Moose Pond in West Branch Penobscot River 

basin are controlled by Ripogenus Dam, in T. 3, R. 11, Piscataquis County, 36 miles upstream from Millinocket and 42 miles northeast of Greenville; present dam conpleted in 

1917 for power and log driving; usable capacity of reservoir, 30,000,000,000 cu ft. 

Records furnished by Great Northern Paper Co.

Amba.le.ius, Pemadumcook, North Twin, South Twin, and Elbow Lakes in West Branch Penobscot 

River basin are controlled by North Twin Dam, 3 miles upstream from Millinocl'et, Penobscot County, for power and log driving; usable capacity of reservoir, 15,000,000,000 

cu ft. Records furnished by Great Northern Paper Co.

Chamberlain and Telos Lakes and Round Pond in East Branch Penobscot River basin are controlled by dams at outlet of Chamberlain and Telos Lakes, although regulation is at 

Telos Dam, in T. 6, R. 11, Piscataquis County. Telos Dam rebuilt during 1941; usable 

capacity, 5,040,000,000 cu ft between gage heights 2.0 and 11.0 ft. Records furnished 

by Bangor Hydro-Electric Co.

Second and Grand Lakes in East Branch Penobscot River basin are controlled by dfm rebuilt 

in 1942 at outlet of Grand Lake, in T. 6, R. 8, Penobscot County; usable caps-city, 

1,785,000,000 cu ft between gage heights 643.0 and 655.0 ft. Records furnisl-ed by 

Bangor Hydro-Electric Co.

Sebec Lake on Sebec River at Sebec , Piscataquis County, used for power and log driving; 

usable capacity, 2,511,000,000 cu ft between gage heights 91 and 100 ft. Gage-height 

records furnished by Bangor Hydro-Electric Co.

Wilson Pond on Wilson Stream, 2f miles east of Greenville, Piscataquis County, used for 

power; usable capacity, 390,000,000 cu ft between gage heights 27.5 and 33.5 ft. Gageheight record furnished by Central Maine Power Co.

Month-end contents, in millic of cubic feet, water year October 1955 to September 1956

Date

Feb. 29. ...............................

July 31 ................................

Sept . 30 ................................

Chesuncook, Ripogenus, 

Caribou, Ambajejus, 

Pemadumcook, North Twin, 

South Twin, and Elbow 

Lakes and Moose Pondt

24,328

7,580

9,391

29,487

Chamberlain, Telos, 

Second, and 

Grand Lakes 

and 

Round Pond

2,746

2,319

642

1,604

6,222

5,751

Wilson Pond 

and 

Sebec Lake

1,289

910

822

1,660

1,365

1,003

1,656

2,653

2,369

2,491

t Includes month-end contents of following additional reservoirs in West Branch Penobscot River 

basin; used primarily for log driving (total capacity, approximately 12,OOO,000,000 cu ft); Penobscot, Seboomook, Caucomgomoc, Loon, Shallow, Umbazooksus, Harrington, Sourdnahunk, Rainbow, Ragged 

and Millinocket Lakes, Canada Falls Reservoir, Dole and Poland Ponds.
42 SHEEPSCOT RIVER BASIN

Sheepscot River at North Whitef ield, Maine

Location.- -La t 44°13'20", long 69°35'40", on left bank at North Whitefield, Lincoln County, 

Just upstream from highway bridge and half a mile downstream from Pleasant Pond Brook.

Drainage area. 148 sq mi.

Records available. October 1938 to September 1956.

Gage. Water-stage recorder. Datum of gage is 101.1 ft above mean sea level, datum of ~

Average discharge. 18 years, 234 cfs.

Extremes . Maximum discharge during year, 1.930 cfs Apr. 17 (gage height, 6.54 ft); minimum, 13 cfs Oct. 6 (gage height, 1.89 ft).

1938-56: Maximum discharge, 5,260 cfs Apr. 13, 1940 (gage height, 11.81 ft, backwater from fish weir), from rating curve extended above 1,900 cfs by logarithmic plotting; minimum, 5.0 cfs Oct. 24, 1941 (gage height, 1,70 ft).

Remarks. Records excellent except those for periods of ice effect, whic)~ are fair. Some 

regulation at low flow by sawmill at North Whitefield.

Revisions (water years) .--WSF 1231: 1940.

Rating tables, water year 1955-56, except periods of loe effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Jan. 9 Jan. 10 to Sept. 30

1.8 8.

2.0 20

2.2 37

2.4 59

2.6 87

3.0 166

3.5 311

4.0 491

1.9

2.0 

2.2 

2.4 

2.6 

3.0

14

180

3.5 

4.0 

5.0 

6.0 

6.8

325

520

97O

1,550

2,110

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

16

16

16

14

14

13

19

22

22

17

16

15

20

16

15

14

15 

16

16

15

15

15

14

14

14

14

15

15

14 

14

J51

532

17.2

0.116

0.13

Nov.

380

270

135

117

196

288

235

191

171

152

178

218

184

168

159

152

186 

174

159

148

133

125

115

115

112

102

94

89

92 

84

4,922

164

1.11

1.24

Dec.

78

72

69

69

68

67

66

63

60

60

60

58

58

57

52

57

57 

55

54

54

53

53

52

52

52

51

51

49

49 

48

47

1,791

57.8

0.391

0.45

Jan.

47

46

46

45

45

*45

48

62

230

616

700

815

1,100

1,100

1,040

985

885 

750

620

544

468

392

336

292

262

235

211

186

162 

156

150

12,619

407

2.75

3.17

Feb.

148

138

135

130

127

122

120

120

118

116

114

114

112

112

110

108

106 

102

102

*101

99

97

95

93

91

106

112

112

108

3,268

113

0.764

0.82

Mar.

106

104

112

130

144

142

140

140

138

138

138

156

160

162

168

*168

166 

162

160

158

*158

154

149

150

148

144

142

135

133

133

133

4,471

144

0.973

1.12

Apr.

133

140

156

182

360

592

730

755

708

795

995

1,100

1,250

1,210

1,170

1,350

1.880 

1,850

1,750

1,590

1,410

1,240

1,130

1,060

985

820

755

775

885 

1,090

28,846

962

6.50

7.25

Hay

960

*835

790

750

700

644

584

496

432

384

353

322

322

360

307

280

277 

253

229

217

192

180

188

253

200

180

280

516

368 

325

322

12,499

403

2.72

3.14

June

313

286

268

271

259

226

*190

173

158

149

140

129

122

120

114

108

93 

85

77

72

68

61

54

53

54

56

49

48

45 

1°

3,881

129

0.872

0.97

July

38

52

49

45

42

49

65

66

68

80

71

72

118

194

175

138

125 

108

95

99

87

79

72

66

66

61

61

56

49 

45

41

2,432

78.5

0.530

0.61

Aug.

38

36

33

32

29

*28

29

28

26

33

39

33

27

26

24

23

22

21

20

19

19

21

22

19

18

18

17

16

16 

16

37

785

25.3

0.171

0.20

Sept.

158

97

83

56

46

42

102

72

57

49

45

41

39

40

126

80

82 

166

104

85

104

95

88

164

195

142

116

108

102 

97

2,781

92.7

0.626

0.70

Calendar year 1955: Max 1,410 Hln 13 Mean 181 Cfsm 1.22 In. 16.63

Water year 1955-56: Max 1,880 Hln 13 Mean 215 Cfsm 1.45 In. 19.80

Peak discharge (base, 1,100 efs).--Jan. 13 (12 m.) 1,160 cfs (5.37 ft); Apr. 17 (7 to 9 p.m.) 

1,930 cfs (6.54 ft).

* Discharge measurement made on this day.

Note. Stage-discharge- relation affected by Ice Dec. 5 to Jan. 9, Jan. 28 to Feb. 2, Feb. 4, 7-17, 

19, 22-27, 29, Mar. 1, 3-14, 17-22, 24-26.
KEMEBEC RIVER BASIN 43 

Moosehead Lake at East Outlet, Maine

Location. Lat 45°35 I 10", long 69°42'45", at wharf at east outlet of lake, at Moosehead, 

Piscataquis County.

Drainage area. 1,240 sq mi, approximately. 

Records available.--April 1895 to September 1956.

Gage. Staff gage read daily at 7 a.m. Datum of gage is 1,011.48 ft above mean sea level, 

datum of 1929.

Extremes. Maximum gage height observed during year, 17.46 ft June 16-18; minimum observed, 

10.65 ft Apr. 4.

1895-56: Maximum gage height, 18.0 ft May 30, 1902; minimum, 10.0 ft or lower, present datum, Mar. 20-29, 1911.

Remarks.--Lake is controlled by dams at East and West Outlets originally built prior to 

1840. East Outlet dam partly rebuilt of concrete in 1947-48 with gate sills at gage 

height 7.0 ft. Remaining wooden section rebuilt of concrete in 1955-56. La\e outlet 

dredged in 1948 to permit drawing level down to gage height 10.0 ft at a faster rate 

than formerly. Capacity, 23,735,000,000 cu ft between gage heights 10.0 and 17.5 ft. 

Water is used primarily for power, although some logs are driven each year. During October, June, July, August, and September some water was diverted through gates in dam at 

West Outlet.

Cooperation. Gage-height record furnished by Kennebec Water Power Co. 

Revisions (water years). WSF 1111: 1946-47 (change in contents).

Capacity table (gage height, in feet, and capacity, 

millions of cubic feet)

10.0

11.0

12.0

13.0

14.0

3,110

6,237

9,397

12,537

15.0

16.0

17.0

18.0

15,713

18,908

22,121

25,355

Gage height, in feet, at 7 a.m., water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

(t)

{*)

Oct.

13.95

13.92

13.91

13.86

13.87

13.80

13.75

13.75

13.73

13.71

13.69

13.65

13.62

13.55

13.50

13.46

13.41

13.35

13.30

13.27

13.26

13.26

13.25

13.20

15.17

13.20

13.24

13.26

15.28

15.35

13.40

10,641

-1,738

Nov.

13.65

15.75

15.80

15.90

14.00

14.05

14.11

14.19

14.25

14.26

14.50

14.35

14.38

14.40

14.45

14.49

14.55

14.55

14.55

14.55

14.50

14.45

14.40

14.40

14.37

14.36

14.35

14.33

14.32

14.30

13,488

+2,847

Dec.

14.30

14.28

14.27

14.28

14.31

14.50

14.31

14.28

14.26

14.25

14.20

14.19

14.19

14.15

14.10

14.08

14.02

13.99

13.92

15.85

15.84

15.79

15.71

15.65

15.61

 15.60

13.56

13.50

15.45

15.58

15.54

10,451

-3,037

Jan.

13.28

13.25

15.17

15.13

13.05

15.01

12.97

12.97

12.99

15.05

15.15

15.25

15.28

15.55

15.45

15.48

13.50

15.55

13.58

15.59

13.65

15.65

15.72

15.69

13.67

13.67

13.69

13.71

13.71

13.75

13.75

11,747

+1,296

Feb.

15.75

15.75

15.74

15.76

15.76

15.75

13.76

13.73

13.68

15.67

15.64

13.64

15.62

15.58

15.57

15.46

15.42

15.59

15.35

13.26

15.21

15.15

15.06

12.98

12.95

12.90

12.85

12.76

12.71

8,466

-3,281

Mar.

12.62

12.57

12.51

12.43

12.35

12.29

12.25

12.25

12.52

12.20

12.16

12.08

11.99

11.92

11.87

 11.81

11.75

11.71

11.67

11.59

11.52

11.46

11.41

11.55

11.50

11.17

11.07

11.05

10.97

10.90

10.85

2,642

-5,824

Apr.

10.85

10.75

10.72

10.65

10.71

10.70

10.75

10.75

10.76

10.78

10.80

10.86

10.92

10.95

10.97

11.05

11.15

11.25

11.36

11.45

11.48

11.55

11.58

11.61

11.66

11.71

11.75

11.88

11.96

12.22

6,928

+4,286

May

12.51

12.58

12.55

12.68

12.79

12.92

15.00

15.05

J.3.20

15.54

13.46

15.57

15.75

14.05

14.30

14.55

14.82

15.04

15.28

15.45

15.69

15.86

16.06

16.27

16.38

16.46

16.52

16.65

-16.76

16.84

16.93

21,896

+14,968

June

17.00

17.09

17.13

17.19

17.25

17.52

17.50

17.52

17.38

17.39

17.40

17.40

17.40

17.45

17.45

17.46

17.46

17.46

17.45

17.40

17.55

17.35

17.35

17.29

17.55

17.35

17.27

17.25

17.25

17.24

22,895

+999

July

17.20

17.25

17.24

17.20

17.18

17.11

17.11

17.08

17.06

17.04

17.05

17.03

17.03

17.02

17.02

17.03

17.01

17.01

17.00

16.98

16.96

16.95

16.96

16.93

16.95

16.94

16.95

16.95

16.94

16.93

16.91

21,831

-1,064

Aig.

16.85

16.80

16.74

16.67

16.60

16.56

16.54

16.53

16.48

16.46

16.47

16.44

16.40

16.37

16.32

16.29

16.20

16.18

16.23

16.17

16.11

16.08

16.03

15.95

15.95

15.90

15.90

15.86

15.85

15.80

15.78

18,204

-5,627

Sept.

15.75

15.68

15.69

15.68

15.66

15.64

15.63

15.56

15.49

15.45

15.^9

15.35

15.34

15.29

15.26

15.18

15.12

15.08

15.01

14.96

14.92

14.89

14.86

14.86

14.86

14.82

14.73

14.70

14.65

14.60

14,441

-3,763

Calendar year 1955.................... * -12,573

Water year 1955-56.................... * +2,062

t Contents, in millions of cubic feet, at end of month. 

* Change in contents, in millions of cubic feet.

Note. Diversion through West Outlet: October, 300 cfs; June, 150 cfs; July, 175 cfs; August, 600 

cfs; September, 640 cfs.
44 KENNEBEC RIVER BASDJ

Kennebec River at Moosehead, Maine

Location.--Lat 4b°35'10", long 69°43'10", on right bank an eighth of a mile downstream

from dam at east outlet of Moosehead Lake and half a mile northwest of Moosehead,

Piscataquis County.

Drainage area.--1,240 sq rni, approximately. 

Records available. October 1919 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 1,015.53 ft above mean sea level, datum of 

19C9. Prior to Oct. 9, 1924, chain gage on railroad bridge 300 ft downstream at same 

datum.

Average discharge.--37 years, 1,855 cfs (unadjusted).

Extremes.--Maximum discharge during year, 3,780 cfs July 2 (gage height, 5.49 ft); minimum, 192 cfs Apr. 6 (gage height, 2.37 ft).

1919-56: Maximum discharge, 15,600 cfs May 8, 1947 (gage height, 9.94 ft); minimum, 

about 62 cfs Apr. 7-15, 1923.

Remarks.--Records excellent. Some water diverted down west channel by leakage and occasional opening of gates in dam at West Outlet. Plow regulated by Moosehead Lake (see 

p. 43 ) and by Brassua Lake and Second and First Roach Ponds (see p. 54 ).

Revisions (water years).--WSP 1301: 1928-50 (adjusted monthly runoff).

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Sept. 9 Sept. 10-30

2.3 164

2.4 204

2.6 300

2.8 414

3.0 542

3.4 

3.8 

4.5 

5.0 

5.2

845

1,240

2,080

2,870

3,220

3.3

3.5 

4.0 

4.5

910

1,110

1,750

2,540

Discharge, In cubic feet per second, water year October 1955 to Septemb?r 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tbtal

Mean

(t)

Oct.

1,590

1,590

1,690

2,040

2,190

2,160

1,970

1,630

1,950

2,120

1,820

] ,760

2,290

2.400

2,390

2,370

2,360

2,320

1,700

1,360

1,360

1,330

1,120

1,390

1,320

1,370

1,170

1,060

1.050 

1 , 080

1,080

53,030

1,711

-1,816

Nov.

565

316

316

322

328

316

316

322

435

643

643

650

657

850

725

1,730

1,710

1,310

1,310

1,280

1,250

1,100

1,670

1.880

1,860

1,580

1,580

1,330

926 

926

28,846

962

+115

Dec.

935

926

926

926

944

944

944

935

926

926

935

1,250

1,690

1,990

2,000

1,990

1,960

1,950

2,150

2,240

2,160

2,140

2,120

1,56Q

1,130

1,570

2,300

2, 550

2,500

2,450 

2,420

50,367

1,625

-1,192

Jan.

2.570

2,310

2,280

2,250

2,210

2,160

2,140

2,140

1,640

675

306

311

316

322

322

322

328

333

890

1,420

1,090

344

1,170

1,600

1,110

1,110

1,110

780

570

920 

1,130

35,979

1,161

+ 562

Feb.

1.150

1,130

1,130

1,130

1,130

1,580

1,920

1,900

1,870

1,860

1,850

1,990

2,300

2,250

2,440

2,650

2,620

2,580

2,550

2,730

2,900

2,890

2,840

2.920

2,920

2,840

2,840

2,840

2,780

______

64,510

2,224

-1,339

Mar.

2,850

2,920

2,840

2,780

2,840

2,890

2,850

2,920

2,920

2,890

2,890

2,920

2,920

2,840

2,770

2,700

2,670

2,580

2,650

2,680

2,600

2,840

2.990

2,900

2,770

2,650

2,560

2,470

2,400

2,320 

2,260

85,080

2,745

-2,192

Apr.

2.190

2,140

2,040

2,040

1,940

615

196

196

196

204

200

204

204

204

204

213

218

222

227

227

227

227

227

227

?32

236

241

245

245

__ _!°

16,247

542

+2,839

May

260

265

265

270

270

270

270

275

275

280

280

285

311

322

328

338

350

355

355

390

495

439

439

433

439

845

735

435

810

'665" 895 

12,644

408

+7,715

June

384

765

600

855

1,460

2,700

2,560

2,220

2,780

5.110

3,110

2,790

2,600

2 , 620

2,600

2,280

1,990

1,690

1,690

2,370

2,530

2,480

2,530

2,550

2,580

2,560

2,500

2,230

2,110

2,110

65,354

2,178

+ 628

July

2,230

1,920

2,310

813

2.550

1,830

2,070

1,910

2,110

1,510

872

895

1,000

970

4gO_

420

955

740

433

1,730

675

445

1,480

1,720

905

1,350

1,460

1,460

1 , 450

1,440 

2,080

41,993

1,355

-233

Aug.

2.590

2,370

2,030

1,700

1,680

1,680

1,580

1,400

1 , 400

1,420

1,420

1,390

1,390

*1,390

1,390

1,370

1,360

1,350

1,350

1,350

1,350

1,340

1,320

1,320

1.510

1,310

1,420

1,500

1,480

1,470 

1,470

46,700

1,506

-804

Sept.

1,450

1,440

1,450

1,880

1,700

1,430

1,430

1,420

1,790

1,730

1,650

2.460

*2 , 380

*1,960

2,150

1,940

2,270

2,460

2,130

1,990

1,320

990

1,270

1,940

1,940

1,920

1,900

1,870

1,860

2,110

54,230

1,808

-674

Adjusted for diversion and change In reservoir contents

Mean

Cf sin

-105 

-0.085 

-0 . 10

1,077 

0.869 

0.97

Calendar year 1955 : 

Water year 1955-56 :

433 

0.349

0.40

1,723 

1.39 

1.60

885 

0.714 

0.77

553 

0.446

0.51

3,381

2.73 

3.05

8,123

6.55 

7.55

Observed

Max 7,550 Mln 300 Mean 2,285 

Max 3,110 Mln 196 Mean 1,516

2,806 

2.26 

2.52

1,122 

0.905 

1.04

702 

0.566 

0.65

1,134 

0.915 

1.02

Adjusted

Mean 1,764 Cfsm 1.42 In. 19.31 

Mean 1,820 Cfsm 1.47 In. 19.98

Discharge measurement made on this day.

t Change In contents, equivalent In cubic feet per second, In Brassua and Moo; 

.econd and First Roach Ponds; also diversion through West Outlet.

Note.--Negative figures of adjusted dis-eharge and runoff Indicate that evapor; 

ixceeded inflow.

ieh?ad Lakes and 

ition and seepage
KENNEBEC RIVER BASIN 45

Kennebec River at The Forks, Maine

Location. Lat 45°20'35", long 69°57'45", on right bank at The Forks, Somerset County, 

half a mile upstream from highway bridge and 1 mile upstream from Dead River.

Drainage area. 1,570 sq mi, approximately.

Records available. September 1901 to September 1956.

Gage. Water-stage recorder. Datum of gage is 569.03 ft above mean sea level, datum of 

1929. Prior to June 21, 1912, chain gage and June 21, 1912, to Oct. 17, 1919, waterstage recorder and chain gage, at highway bridge half a mile downstream at different 

datum.

Average discharge.--55 years, 2,542 cfs (unadjusted).

Extremes.--Maximum discharge during year, 7,920 cfs Apr. 30 (gage height, 5.99 ft); minimum daily, 415 cfs July 22.

1901-56: Maximum discharge, about 23,700 cfs June 18, 1917 (gage height, 10.1 ft, 

site then in use); minimum, 85 cfs Sept. 3, 1953 (gage'height, 1.02 ft).

Remarks. Records excellent except those below 500 cfs and those for periods of ice effect 

or no gage-height record, which are fair. Flow regulated by Moosehead Lake (see 

p. 43 ], Brassua Lake, and Moxie, Indian, Second and First Roach Ponds (see p. 54 ).

Revisions (water years).--WSP 198: Drainage area. WSP 1231: 190S-4, 1903-8, 1912, 1914, 

1919-20(M), 1923(M), 1926(M). 1928-29(M), 1936(M), 1938(M). WSP 1301: 1928-35 (adjusted monthly runoff).

Rating table, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.7 

2.0 

2.5 

3.0

381

571

985

1,550

3.5 

4.0

2,270

3,170

4,870

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

2,010

2,350

2,430

2,670

3,100

2,750

3,060

2,760

1,690

3,070

2,280

2,550

2,840

5,170

2,960

3,000

2,810

2,920

2,270

1,740

1,830

1,610

980

1,730

1,490

1,480

1,220

1,140

1,280

610

1,810

67,610

2,181

-2,183

Nov.

1,650

920

1,230

1,380

650

650

920

970

960

990

1,240

940

1,100

1,410

1,180

2,070

2,050

1,500

1,800

1,470

1,370

1,360

1,620

2,080

2.240

1,800

1,540

1,560

1,100

1,040

 

40,770

1,359

+115

Dec.

1,310

1,220

785

1,000

1,290

1,110

1,080

900

1,100

1,300

800

1,500

2,000

2,350

2,250

2,150

2,200

2,100

2,400

2,700

2,300

2,600

2,400

1,570

1,050

1,730

5.020

2,800

2,600

2,450

2,580

56,645

1,827

-1,192

Jan.

2,490

2.700

2,600

2,490

2,300

2,510

2,250

2,290

2,100

1,280

900

1,100

1,250

1,670

900

1,110

1,130

860

1,490

2,060

1,510

590

2,050

2,200

1,160

1,320

1,400

1,130

950

1,070

1,450

50,110

1,616

+562

Feb.

1,380

1,420

1,380

1.010

1,360

2,040

2,170

2,440

2,230

2,230

2,050

1,450

2,770

2,620

3,040

3,420

2,830

3,100

1,150

3,010

5,230

5,370

3,450

3.550

2,550

2,030

3,230

3,070

2,950

__ _

 

70,510

2,431

-1,350

Mar.

3,020

3,520

2,670

2,960

5,150

5,070

5,470

5.670

3,230

2,950

1,860

5,520

5,060

5,050

2,880

5,210

2,100

2,640

5,500

2,680

2,640

2,680

3,590

2,920

2,370

5,070

5,000

2,740

2,660

2,750

2,720

90,950

2,953

-2,209

Apr.

1,550

2,840

2,060

2,400

2,240

1,070

670

805

755

750

780

860

1,020

1,100

940

,930

,980

,250

,520

,770

,650

,850

,450

,740

,500

,890

,090

,640

2,690

4.520

 

50,050

1,668

+2,927

May

5,600

3,050

2,870

3,120

3,910

2,180

2,820

2,510

2,110

*2,410

2,260

2,060

2,230

4.710

2,700

2,410

1,720

1,660

2,080

900

980

1,270

1,590

1,280

1,440

850

1,290

1,700

1,600

1,860

. 1,850

66,980

2,161

+7,896

June

1,360

1,610

1,870

1,740

2,140

4,150

2,920

3,080

3,420

3,290

4, 410

3,230

3,060

2,590

2,820

2,560

2,080

2,550

1.240

2,630

2,610

2,600

2,800

2,440

3,020

3,040

2,740

2,180

2,280

2,170

 

78,610

2,620

+490

July

2,56:)

2.90:)

2,770

835

2,58'

2 , 73''

1.77C

2,12C

2,391'

2,25C

1,27C

l,09f

1,38C

1,45C

86C

61E

90C

1,22C

82f

94f

42C

41f

1,52C

2,480

1,440

1,290

1,900

1,76C

1,75C

1,82C

2,07C

50,525

1,623

-365

Aug.

2.760

2,760

2,700

2,070

2,150

2,520

2 , 400

2,020

2,040

2,400

2,180

2,200

2,280

2,170

2,220

2,030

2,070

2,230

2,350

2,330

2,240

1,990

1.860

2,340

2,160

2,190

2,230

2,160

2,540

2,470

2,150

70,190

2,264

-1,421

Sept.

2,900

1,910

2,260

3,350

2,730

2,440

1,920

2,140

2,240

2,930

2,940

5,82_Q

3,480

3,310

2,940

2,410

3,140

3,730

2,780

3,000

2,220

1.730

2,310

3,240

2,850

2,740

2,820

2,810

2,230

2,120

 

81,440

2,715

-1,507

Adjusted for change in reservoir contents

Mean 

Cfsm

In.

-0.001

0.00

1,474 

0.939

1.05

Calendar year 1955 : 

Water year 1955-56 :

635 

0.404

0.47

2,178 

1.39

1.60

1,081 

0.689

0.74

724 

0.461

0.53

4,595 

2.93

3.27

10,060 

6.41

7.59

Observed

Max 9,940 Min 560 Mean 2,952 

Max 4,710 Min 415 Mean 2,115

3,110 

1.98

2.21

1,258 

0.801

0.92

843 

0.537

0.62

1,208 

0.769

0.86

Adjusted

Mean 2,519 Cfsm 1.48 In. 20. OS 

Mean 2,266 Cfsm 1.44 In. 19.66

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Moosehead and Brassua Lakes, Second 

and First Roach, Indian and Moxie Ponds.

Note. No gage-height record Dec. 6-21; discharge estimated on basis of records at Harris Power 

Station. Stage-discharge relation affected by ice Dec. 22, 23, Dec. 27 to Jan. 9. Negative figures 

of adjusted discharge and runoff indicate that evaporation and seepage exceeded inflow.
46 KENNEBEC RIVER BASIN

Dead River near Dead River, Maine

Location.--Lat 45°13'48", long 70°11'58", T. 3, R. 4, Somerset County, pn right bank at 

foot of Long Palls, 0.3 mile upstream from Black Brook and 0.5 mile donmstream from 

Flagstaff Lake Dam.

Drainage area.--520 sq mi.

Records available.--October 1939 to September 1956. October to December 1939 monthly 

discharge only, published in WSP 1301.

gage.--Water-stage recorder. Datum of gage is 1,037.32 ft above mean sea level, datum of 

"1929.

Average discharge. 17 years, 804 cfs (unadjusted).

Extremes..--Maximum discharge during year, 6,020 cfs July 24 (gage height, 8.82 ft); minimum daily, 0.8 cfs Mar. 2-11.

1939-56: Maximum discharge, 18,000 cfs Sept. 12, 1954 (gage height, 11.50 ft); no 

flow part of July 31, 1949, when flow was completely shut off by cofferdam during construction of Flagstaff Lake dam.

Remarks. Records good except those below 50 cfs, which are fair. 

Flagstaff Lake (see p. 54).

Flow regulated by

Rating tables, water year 1955-56, except periods of ice effect 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Dec. 19 Dec. 20 to Sept. 30

5.7 

3.8 

4.0

6.2

12

28

Note.--Same as 

following table 

above 4.0 ft.

3.5

3.6

3.7

3.8 

4.0

1.2

3.1

5.8

9.4

14

28

5.0 

5.5 

6.0 

7.0 

8.1

101

240

475

835

1,960

4,030

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11 

12 

13

14 

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tbtal

Mean

(t)

Oct.

2.060 

1,970

990

975

975

1,340

1,190

1,270

956

947

325 

ill

210 

230

230

230

230

925

1,630

1,810

1,780

1,760

1,730

915

920

1,400

1,530

1,620

1,600 

1,130

33,099

1,068 -911

Nov.

23 

3.0

3.0

3.0

3.4

3.4

3.4

3.4

3.0

lil

530 

886 

1,380

1.750 

1,700

595

560

1,250

725

590

690

835

827

819

810

810

810

1,090

1,560

1,550

19,798.3

600 -146

Dec.

1 . 510 

990

737

1,210

1,440

1,400

1,390

1,380

1,360

1,330

1,300 

1,250 

840

605 

585

575

555

545

250

1=1

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2 

1.2

19,266.4

621 -428

Jan.

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

530

894

280 

1.9 

1.9

1.9 

1.7

1.9

1.9

1.9

1.9

162

880

880

880

1,250

1.680

1,650

1,640

1,610

1,590 1 550 1)520

17,020.6

549

+476

Feb.

1.500 

1,480

1,460

1,430

1,390

1,150

691

683

675

675

668 

668 

661

653 

646

639

520

1.2

1.1

1.1

4.9

.9

.9

1.2

.9

.9

.9

.9

15,600.8

538 -301

Mar.

1.5 

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8 

.9 

.9

.9 

.9

.9

.9

.9

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1,120

*1.550

480

3.1

245

417

3,618.6

117

+121

Apr.

1,020 

1.540

480

325

3.9

5.9

5.4

2.9

2.7

2.5_

2.5 

2.5 

2.7

2.9 

2-. 7

2.9

5.8

5.9

5.4

5.4

3.4

5.1

5.1

5,1

5.1

2.9

3.1

6.4

6.4

6.7

5,258.3

109

+1,675

May

4.7 

4.4

4.4

5.2

6.1

6.4

6.4

9.8

9.8

11

*100 

8.6 

164

1,700 

5.870

5,070

820

845

1,800

1,790

1,850

1,620

2,500

2,490

2,030

740

1,420

2,400

2,610

2,510

1 , o£U

35,825.8

1,156

+2,193

June

2,640 

2,030

1,650

1,720

2.750

2,180

1,510

585

1,550

1,770

1,490 

1,520 

785

530 

555

970

86

84

86

350

1,190

84

82

96

425

505

240

250 205

235

28,095

956

+15

July

515 

880

540

166

86

90

170

95

590

1,220

1,070 

1,010 

1,530

225 

97

1,870

1,860

1,780

1,740

2,240

2,580

2,oro

1,960 2.5PO 2,2r"

2,250

1,030

l,5ZXl

1,510 86°0

551

56,435

1,175 -941

Aug.

531 

531

531

265

245

1,090

2,160

895

2.450

2,220

1,280 

1,480 

2,220

1,470 

1,070

420

108

670

1,000

974_

947

912

886

869

852

827

810

786

769

761

590

50,419

981 -820

Sept.

119 

130

148

128

126

121

119

119

123

455

563 

557 

557

557 

557

557

250

125

123

126

128

125

121

119

119

121

119

119

119

116.

6,742

225

+25

Adjusted for storage in Flagstaff Lake

Mean 

Cfsm 

In.

157 

0.502 

0.55

514 

0.988 

1.10

Calendar year 1955: 

Water year 1955-56;

195 

0.571 

0.43

1,025 

1.97 

2.27

257 

0.456 

0.49

238 

0.458 

0.55

1,784 

5.45 

5.85

5,549 

6.44 

7.42

Observed

Max 7,930 Min 1.2 Mean 1,034 

Max 3,870 Min 0.8 Mean 681

951 

1.83 

2.04

2T4 

0.450 

0.52

161 

0.3.10 

0.36

248 

0.477 

0.53

Adjusted

Mean 762 Cfsm 1.47 In. 19.87 

Mean 759 Cfsm 1.46 In. 19.87

* Discharge measurement made on this day.

adlngs
KENNEBEC RIVER BASIN 47

Dead River at The Porks, Maine

Location. Lat 45°.21 I 00", long 6J9 0 59'30", on left bank 1| miles northwest of The Porks, 

Somerset County, and l| miles upstream from mouth,

Drainage area. 872 sq mi.

Records available. September 1901 to"August 1907, March 1910 to September 1936. Monthly 

discharge only for some periods, published in WSP 1301.

Gage_. Water-stage recorder. Datum of gage is 600.5 ft above mean sea level, adjustment 

of 1912. Prior to September 29, 1923, staff gage at site 100 ft downstream at same 

datum.

Average discharge. 51 years (1902-7, 1910-56), 1,417 cfs (unadjusted).

Extremes. Maximum discharge during year, 8,640 cfs May 16 (gage height, 5.98 ft); maximum gage height, 7.71 ft Mar. 27 (ice Jam); minimum daily discharge, 66 cfs Dec. 31, 

Jan. 2-8.

1901-7, 1910-56: Maximum discharge, 28,700 cfs Mar. 20, 1936 (gage height, 10.54 

ft), from rating curve extended above 15,000 cfs; minimum since September 1923, 54 cfs 

Sept. 27, 1941 (gage height, 1.50 ft).

Remarks. Records excellent except those for period of ice effect, which are fair. Flow 

partly regulated by Flagstaff and Spencer Lakes (see p. 54 ).

Revisions (water yearsj . WSP 801: Drainage area. WSP 1231: 1913-15, 1916-17(M) , 1919- 

20(M), 1922(M). WST 1301: 1904(M) , 1907, 1911-12.

Rating tables, water year 1955-56, except period of Ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Mar. 27 Mar. 28 to Sept. 30

1.6 66

1.8 153

2.0 270

2.4 610

3.0 1,380

3.5 2,200

4.0 3,200

l.S 190

2.0 326

2.4 713

3.0 1,550

4.0 3,440

5.0 5,810

5.7 7,790

Discharge, In cubic feet per second, water year October 1955 to September 1055

Day

1

2

3

4

5

6 

7

8

9

10

11

12

13

14 

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

2.170

2,060

1,200

1,120

1,150

1,410 

1,360

1,490

*1,060

1,050

685

180

213

238

305

305

305

305

680

1,760

2,030

1,980

1,960

1,910

1,380

965

1,330

1,670

1,780

1,720

1,610

37,381

1,206

-1,052

Nov.

783

807

666

510

520

590 

570

510

447

396

510

1,140

1,420

1.960 

1,940

1,360

515

1,4SO

1,130

8S1

771

1,030

1,030

1,010

982

1,020

956

1,030

1,670

1,740

29,374

979

-146

Dec.

1.590

1,370

856

1,050

1,430

1,530 

1,530

1,520

1,520

1,500

1,500

1,500

S45

725 

710

710

700

680

152

82

*74

74

74

74

70

70

70

70

70

70

66

22,332

720

-428

Jan.

70

66

66

66

66

66 

66

66

130

510

995

1,500

1,380

1,200 

970

745

570

485

420

430

970

1,100

995

1,240

1.940

1,890

1,860

1,830

1,760

lieeo

26,802

865

+476

Feb.

1.650

1,560

1,530

1,500

1,440

1,410 

1,060

995

980

970

970

970

945

*945 

895

S55

845

205

200

196

180

180

180

176

205

200

164

152

164

21,702

748

-301

Mar.

142

124

110

106

97

93

86

97

116

196

255

220

196

170 

152

152

158

215

265

285

275

270

290

285

270

1,100

5.200

1,620

298

190

691

11,724

378

+121

Apr.

1,060

1,910

1,360

409

475

"§34

670

670

637

585

564

605

616 

762

798

1,180

1,820

1,720

1,530

1,380

1,200

1,070

939

887

900

1,030

2,340

3,400

4.600

36,043

1,201

+1,771

May

4,160

3,210

2,990

2,950

2,830

2,730 

2,550

2,270

1,940

*1.860

2,090

2,200

3,980

7,130 

7.640

7,320

4,330

2,860

3,210

3,500

3,500

3,010

3,400

4,340

3,850

2,300

2,170

4,180

4,230

3, 980

3,380

110,090

3,551

+2,338

June

3,780

3,720

3,130

2,710

3,740

4.070 

3,030

2,200

2,580

3,540

2,440

2,270

1,910

1,090 

*79S

1,720

605

409

376

343

1,530

650

343

312

401

1,110

798

475

595 

376

51,051

1,702

+ 50

July

513

980

1,390

762

401

319 

376

447

890

1.9SO

1,830

1,620

1,980

625 

523

2,070

2,210

2,140

2,110

2,570

2,480

2,400

2,320

2.690

2,570

2,580

730

1,720

1,700

1,300

670

46,896

1,513

-906

Aag.

659

648

637

523

216

680 

3,000

645

2,360

5.050

1,570

1,490

*2,500

1,990 

1,240

905

770

960

1,690

1,600

1,520

1,440

1,380

1,360

1,380

1,280

1,230

1,180

*1 , 200

1,210

1,050

41,363

1,334

-1,086

Sept.

564

523

691

762

595

494 

437

392

343

409

7S6

798

798" 811

737

713

637

359

384

376

564

585

465

418

484

574

534

437

384 

343

16,397

547

+20

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

154 

0.177 

0.20

833 

0.955 

1.07

Calendar year 1955! 

Water year 1955-56:

292 

0.335 

0.39

1,341 

1.54 

1.78

447 

0.513 

0.55

499 

0.572 

0.66

2,972 

3.41 

3.80

5,889 

6.75 

7.78

Observed

Max 12,200 Mln 66 ' Mean 1,500 

Max 7,640 Mln 66 Mean 1,233

1,752 

2.01 

2.24

607 

0.696 

0.80

248 

0.284 

0.33

567 

0.650 

0.73

Adjusted

Mean 1,228 Cfsm 1.41 In. 19.13 

Mean 1,303 Cfsm 1.49 In. 20.33

Discharge measurement made on this day. 

t Change in contents, equivalent in cubic feet per second, in Flagstaff and Spencer Lakes.
KENNEBEC RIVER BASIN

Austin Stream at Bingham, Maine

Location.--Lat 45°03'55", long 69°52'55", on right bank at Bingham, Somerset County, 

three-quarters of a mile upstream from mouth.

Drainage area.--91.1 sq mi.

Records available. October 1931 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 350.14 ft above mean sea level, datum of 

1929.

Average discharge.--25 years, 172 cfs.

Extremes.--Maximum discharge during year, 1,770 cfs Apr. 30 (gage height, 8.50 ft); maximum gage height, 8.57 ft Jan. 11 (backwater from ice); minimum discharge, 7.7 cfs 

Oct. 6, 7 (gage height, 5.32 ft).

1931-56: Maximum discharge, 5,820 cfs Sept. 17, 1932, and Nov. 27, 1950; maximum 

gage height, 17.63 ft Mar. IS, 1936 (backwater from ice jam); minimum discharge, 

1.6 cfs Sept. 30, Oct. 1, 1948.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair.

Revisions.--WSP 1171: Drainage area.

Rating tables, water year 1955-56, except period of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Jan. 11 Jan. 12 to Sept. 30

5.3

5.4 

5.6 

5.8 

6.0 

6.2

6.4 

6.7

7.0 

7.4 

7.9

126

220

355

635

1,100

5.2

5.3

5.4 

5.6 

5.8 

6.0 

6.2

204

324

480

850

1,280

1,770

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Of sm

In.

Oct.

8.6

8.3

8.6

8.3

8.0

*7.7

7.7

9.7

15

14

12

12

12

12

10

10

10

10

11

10

11

13

15

13

14

13

15

14

13 

12

3_7

374.9

12.1

0.133

0.15

Nov.

1.050

550

340

250

280

310

270

ISO

120

88

78

81

76

71

74

68

66

96

84

70

61

57

52

54

50

45

40

35

29

Z6_

4,651

155

1.70

1.90

Dec .

25

22

22

21

20

25

26

25

24

24

23

23

23

22

22

22

22

22

22

22

*22

22

21

22

22

22

21

18

18 

17

17

679

21.9

0.240

0.28

Jan.

16

16

16

16

16

16

15

19

116

305

815

690

615

493

380

306

244

184

134

102

88

75

69

62

*59

56

56

58

58 

56

56

5,207

168

1.84

2.12

Feb.

56

56

55

53

49

49

49

52

52

49

48

46

49

*46

44

43

43

43

42

42

42

42

41

41

41

44

46

48

49

1,360

46.9

0.515

0.56

Mar.

48

48

46

46

44

43

42

41

41

42

41

41

40

38

38

38

38

38

38

40

40

38

37

42

44

*43

44

43

40 

34

34

1,270

41.0

0.450

0.52

Apr.

32

36

40

45

116

233

306

306

293

276

268

272

298

311

306

375

810

906

858

762

645

532

463

386

356

356

406

1,060

1,280

1.750

14,063

469

5.15

5.75

May

1.450

1,130

1,090

1,050

1,010

1,000

890

690

*573

573

552

552

882

1,150

874

645

552

451

365

320

272

236

233

244

215

181

252

545

422 

306

18,985

612

6.72

7.75

June

396

802

601

566

457

370

289

233

268

284

284

240

194

*165

139

119

96

81

69

61

58

58

53

49

52

48

44

45

42

40_

6,203

207

2.27

2.53

July

36

44

41

33

30

28

37

43

72

204

159

*101

67

116

191

126

83

59

43

34

31

30

30

30

31

31

29

24

22

20

16

1,841

59.4

0.652

0.75

Aug.

14

13

12

11

11

*11

12

12

11

12

14

13

*12

12

13

12

11

11

11

11

10

10

10

13

19

18

16

14

*17 

18

21

405

13,1

0.144

0.17

Sept.

30

31

62

55

38

30

26

24

19

17

14

14

14

13

13

13

16

29

28

33

75

65

49

46

61

59

45

36

33 

28

1,016

33.9

0.372

0.42

Calendar year 1955 : Max 1,720 Min 6.3 Mean 160 Cfsm 1.76 In. 23.85

Water year 1955-56 : Max 1,730 Min 7.7 Mean 153 Cfsm 1.68 In. 22.90

Peak discharge (base 1.200 cfs).--Apr. 50 (5;50 p.m.) 1,770 cfs (8.50 ft); May 14 (5 a.m.) 1,210 

cfs (7.92 ft).

* Discharge measurement made on this day.

Note. No gage-height record Oct. 1-6, Oct. 23 to Nov. 29; discharge estimated on basis of recorded range in stage, weather records, and records of nearby stations. Stage-discharge relation 

affected by ice Nov. 30 to Jan. 12, Jan. 2O to Feb. LI, Feb. 16 to Mar. 3, Mar. 5, 6, 8-29, Apr. 

1-5.
KEMEBEC RIVER BASIN 4 » 

Kennebec River at Bingham, Maine

Location.--Lat 45°03'05", long 69 0 53'15", on right bank at Bingham, Somerset County. 200 ft 

downstream from highway bridge, half a mile downstream from Austin Stream, and if miles 

downstream from Wyman Dam.

Drainage area. 8,710 sq mi, approximately.

Records available. June 1907 to June 1910, October 1930 to September 1956.

Gage. --Water-stage recorder. Datum of gage is 330.2 ft above mean sea level, datum of 1929. 

June 1907 to June 1910 chain gage on highway bridge at different datum.

Average discharge. 28 years (1907-9, 1930-56), 4,274 cfs (unadjusted).

Extremes.--Maximum discharge during year, 17,300 cfs May 14 (gage height, 9.95 ft); minimum 

 daily, 1,160 cfs Dec. 25.

1907-10, 1930-56: Maximum discharge, 58,800 cfs Mar. 20, 1936 (gage height, 14.44 ft),

from rating curve extended above 27,000 cfs on basis of'computations of flov at Wyman

Dam plus inflow; minimum daily, 110 cfs Dec. 25, 1947.

Remarks. Records excellent. Flow regulated by Moosehead Lake (see p. 43); Brassua, Flagstaff, and Spencer Lakes, Second Roach, First Roach, Indian, Moxie and Wyman Ponds 

(see p. 54). Considerable diurnal fluctuation caused by powerplant above station.

Revisions (water years) . WSP 1271: 1951(M), WSP 1301: 1936(M).

Rating table, water year 1955-56 (gage height, in feet, 

discharge, in subic feet per second)

7.5

1,050

1,910

2,980

4,310

5,930

8.0 

8.5 

9.0 

9.5

7,790

10,000

13,200

14,900

Discharge, in .cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9 

1O

11

12

13

14

15

16

17

18

19

20

21

22

23 

24

25

26

27

28

29

30

31

1tota3

Mean

(t)

Oct.

3,750 

3,420

3,950

3,580

3,720

3,640

3,750

3,870

2,900 

3,610

3,450

3,530

3,140

3,340

3,65O

3,050

3,340

3,400

2,120

2,380

3,140

3,360

2,530 

2,830

3,050

2,780

2,760

2,900

2,900

2,580

2,960

101,380

3,270

-3,074

Nov.

4,580 

3,300

2,300

2,160

1,610

2,460

2,100

1,970

2,430 

2,510

3,440

2,480

2,600

2,540

2,710

2,800

2,910

2,760

3,060

2,760

2,910

2,940

2,950 

2,580

2,780

2,730

2,750

2,730

2,980

2,880

80,610

2,687

-73

Dec.

3,690 

2,840

2,860

2,480

2,680

2,800

2,9OO

2,910

2,770 

3, 410

2,520

2,830

2,600

2,660

2,800

2,200

2,740

2,180

2,940

2,880

2,860

2,790

2,820 

1,700

1,160

2,230

2,450

2,570

2,440

2,140

2,530

80,370

2,593

-1,690

Jan.

2,350 

2,270

2,280

3,300

2,100

2,350

2,230

2,180

1,970 

2,630

4,140

4,350

3,860

4,060

2,370

2,240

2,160

2,470

2,900

3,200

2,960

2,960

2,910 

3,140

3,030

3,140

3,000

3,100

3,100

3,190

3,120

88,060

2,841

+1,094

Feb.

3,250 

3,100

3,360

3,390

3,140

3,660

3,380

3,330

3,310 

3,430

3,330

3,150

3,130

3,220

3,150

3,390

3,420

3,280

3,180

3,200

3,280

3,270

3,160 

3,420

3,030

3,060

3,090

3,270

3,390

 

94,660

3,264

-1,683

Mar.

3,350 

3,390

3,350

3,320

3,350

3,380

3,260

3,250

3,410 

3,32O

3,400

3,510

3,160

3,150

3,180

3,380

3,420

3,310

3,320

3,290

3,290

3,350

3,290 

3,150

3,520

3,380

3,390

3,410

3,460

3,250

3,230

103,220

3,330

-2,051

Apr.

3,160 

3,590

3,190

3,200

3,010

2,930

2,64O

2,390

3,320 

1,960

1,850

1,320

2,420'

3,120

3,550

4,970

5,840

5,930

5,930

5,180

4,720

4,380

4,950 

4,690

4,480

4,170

2,630

2,730

4,080

7 900

_ _ !* __

114,230

3,808

+4,760

May

11,300 

8,940

8,590

7,650

7,790

7,250

7,830

6,630

6,200 

6,090

5,000

5.08O

5,730

13,900

11,600

11,600

8,600

5,170

5,920

4,500

5,480

4,610

5,190 

6,260

6,360

4,520

3,360

6,260

6,940

4,460

'7,820

216,630

6,988

+10,182

June

6,710 

6,79O

4,620

5,140

6,680

7,880

8,490

6,380

6,440 

5,33O

7,050

7,330

5,850

4,200

3,980

3,520

3,260

3,360

3,220

3,540

3,380

3,340

3.180 

3,200

3,240

3,220

3,200

3 , 2'20

3,260

3,240

142,230

4,741

+486

July

3,340 

3,560

3,930

3,590

3,430

3.580

3,180

3,280

3,130 

3,000

2,780

3,050

3,080

3,110

2,640

2,600

3,140

3,320

3,040

3,420

3,280

3,180

3,300

3,470

3,200

3,220

3,420

3,300

3,340

3,570

3,140

98,510

3,178

-1,291

Auj.

3,360 

3,540

3,480

3,320

3,380

3,680

3,420

3,450

3,340 

3,420

 3,440

3,360

3,500

3,480

3,520

3,510

3,480

3,140

3"/783

3,630

3,530

3,580

3,540 

3,500

3,490

3,580

3,530

3,560

3,550

3,470

3,430

ri07,890

3,480

-2,47O

Sept.

3,710 

2,150

2,360

3,620

3,490

3,570

3,320

3.62O

3,090 

3.960

3,530

3,440

3,5OO

3,500

3,440

3,420

3,320

3,400

3,350

3,260

3,490

3,190

3,130 

3,460

3,150

3,340

3,240

3,330

3,330

3,220

99,930

3,331

-1,525

Adjusted for change in reservoir contents

Mean

Cf sm 

In.

196 

0.072 

0.08

2,614 

0.965 

1.08

Calendar year 1955: 

Water year 1955-56:

903 

0.333 

0.38

3,935 

1.45 

1.67

1,581 

0.583 

0.63

1,279 

0.472 

0.54

8,568 

3.16 

3.53

17,170 

6.34 

7.31

Observed

Max 17,800 Min 1,160 Mean 4,761 

Max 13.9OO Mln 1,160 Mean 3,628

5,227 

1.93 

2.15

1,887 

0.696 

0.80

1,010 

0.373 

0-43

1,806 

0.666 

0.74

Adjusted

Mean 3,859 Cfsm 1.42 In. 19.34 

Mean 3,853 Cfsm 1.42 In. 19.34

t Change in contents, equivalent in cubic feet per second, in Brassua, Moosehead, Flags'-.aff and 

Spencer Lakes, Second and First Roach, Indian, Moxie, and Wyman Ponds.
so KENNEBEC RIVER BASIN

Carrabassett River near North Anson, Maine

Location. Lat 44°52'00", long 69°57'10", on left bank 3 miles upstream from Mill Stream 

and North Anson, Somerset County.

Drainage area.--354 sq mi.

Records available.--November 1901 to May 1907, August 1925 to September 1956.

Gage. Water-stage recorder. Datum of gage is 303.3 ft above mean sea level, datum of 

1929. Nov. 1, 1901, to May 5J 1907, chain and rod gages 1 mile upstrean at different 

datum.

Average discharge.--35 years (1902-6, 1925-56), 693 cfs.

Extremes.--Maximum discharge during year, 6,310 cfs Apr. 30 (gage height, 9.15 ft); maximum gage height. 11.40 ft Jan. 10 (ice jam); minimum discharge, 56 cfs Oct. 6 (gage 

height, 2.55 ft).

1925-56: Maximum discharge, 30,800 cfs Mar. 19, 1936 (gage height, 21.17 ft); minimum, 18 cfs Oct. 29, 1929 (gage height, 2.02 ft).

Remarks.--Records excellent except those for period of ice effect, which are fair. Some 

regulation at low flow by mills above station.

Revisions (water years).--WSP 851: Drainage area. WSP 1231: 1904-7, 192?(M), 1932(M), 

1936(M), 1938(M), 1944(M), 1950(M).

Rating table, water year 1955-56, except period of ioe effect (gage 

height, in feet, and discharge, in oublo feet per second)

3.1 

3.5 

4.0

150

265

5.0 

6.0 

8.0

1,070

2,020

4,530

5,750

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

S

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

65 

61

62

62

61

57

75

88

90

88

77

69

68

62

61

61

71

94

132

105

92

90

92

88

90

101

103

90

82

74 

136

2,543

82.0

0.232

0.27

Nov.

3,500 

2,370

1,230

841

1,230

1,310

1,030

805

667

557

500

500

460

426

452

418

464

536

418

360

300

250

230

235

220

200

180

172

158

150

20,169

672

1.90

2.12

Dec.

132 

126

126

124

130

132

148

150

138

118

114

110

108

104

100

104

102

94

94

*87

85

82

80

80

77

74

73

71

70

75

70

3,173

102

0.288

0.33

Jan.

73 

77

80

79

77

76

76

80

280

1,500

5,810

3,300

3,400

3,000

2,200

1,800

1,200

1,000

800

620

500

400

340

290

260

230

210

200

186

180

174

26,498

855

2.42

2.79

Feb.

172 

172

172

172

172

172

172

170

170

170

168

168

168

168

*168

160

158

156

152

148

138

136

136

130

130

130

130

128

128

4,514

156

0.441

0.48

Calendar year 1955: Max 7,960 Min 53

Mar.

126 

120

116

114

112

112

112

112

112

112

112

110

110

108

106

102

100

T05

100

102

110

120

130

140

148

148 *146

146

146

142

142

3,716

120

0.339

0.39

Apr.

142 

156

174

215

420

1,910

2,410

2,240

1,910

1,700

1,590

1,570

1,580

1,600

1,670

2,050

4,020

3,800

2,790

2,320

2,130

1,790

1,530

1,180

1,160

1,210

1,350

3,610

3,920

*5,740

57,887

1,930

5.45

6.08

Mean 604

May

4,370 

2,980

2,850

2,710

2,960

2,720

2,400

1,890

1,460

1,540

1,430

1,330

2,840

2,980

2,570

2,120

1,770

1,330

972

874

811

751

1,000

1,050

751

619

840

2,240

1,400

1,120

1,140

55,818

1,801

5.09

5.37

June

1,280

1,740

1,220

1,890

1,890

1,410

1,020

769

793

923

847

745

619

*510

447

390

339

301

265

248

228

231

216

262

339

301

238

294

269

231

20,255

675

1.91

2.13

Cfsm 1.71

July

201 

262

287

201

163

1ST

193

301

525

1,250

745

515

39^

520

775

515

390

32*

283

233

207

193

193

225

291

219

174

143

130

130

iiS.

10,283

33?

0.933

1.0-!

Aug.

116 

106

103

84

77

90

95

95

97

97

104

106

*94

88

85

80

80

69

65

79

82

79

77

79

106

108

94

94

97

116

i_2

2,870

92.6

0.262

0.30

Sept.

135 

130

190

219

152

124

118

104

87

90

87

88

88

92

77

74

§5

148

148

148

590

3159"

213

204

290

290

231

193

162

146

5,017

167

0.472

0.53

In. 23.14

Water year 1955-56: Max 5,740 Min 57 Mean 581 Cfsm 1.64 In. 22.37

Peak discharge (base, 6,000 cfs). --Apr. 30 (11 a.m.) 6,310 ofs (9.15 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 21 to Apr. 14.
KENNEBEC RIVER BASIN 51

Sandy River near Mercer, Maine

Location. Lat 44°42'30", long 69°56'25", on right bank 0.9 mile upstream from Bog Stream, 

3 miles north of Mercer, Somerset County, and 9j miles upstream from mouth.

Drainage area. 514 sq mi.

Records available. --October 1928 to September 1956.

Gage. ^ --Water-stage recorder. Datum of gage is 197.1 ft above mean sea level, datum of 

Average discharge. 28 years, 928 cfs.

Extremes . --Maximum discharge during year, 7,840 cfs Apr. 18 (gage height, 8.22 ft); maximum gage height, 8.92 ft Jan. 10 (backwater from ice); minimum discharge, 44 cfs Oct. 6 

(gage height, 2.34 ft) .

1928-56: Maximum discharge, 38,600 cfs Mar. 19, 1936 (gage height, 16.75 ft), from 

rating curve extended above 12,000 cfs on basis of records for stations on Kernebec 

River at Bingham and Waterville, Carrabassett River near North Anson and Sebasticook 

River near Pittsfield; minimum, 32 cfs Sept. 22-26, 1939 (gage height, 2.15 ft).

Remarks. --Records excellent except those for periods of ice effect, which are fair. 

Revisions (water years). WSP 756: 1933". WSP 801: Drainage area. WSP 1231: 1936 (M).

Rating table, water year 1955-56, except periods of ice effect (gage 

height. In feet, and discharge, in cubic feet per second)

2.3

2.5 

2.8 

3.0 

3.5 

4.0

40

61

111

160

352

650

4.5

5.0 

6.0 

7.0 

7.8

1,040

1,540

2,960

4,920

6,770

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf sin

In.

Oct.

48

48 

49

46

45

44

W

59

67

78

81

76

68

61

55

51

54 

68

89

137

118

103

94

90

94

87

94

111

103

96

111

2,375

76.6

0.149

0.17

Nov.

1,760

5.680 

1,520

947

1,030

1,740

1,300

989

851

728

637

650

637

583

583

570

564 

728

671

539

415

385

345

315

295

275

255

235

220

190

23,637

788

1.53

1.71

Dec.

188

188 

184

184

180

180

178

176

186

186

172

170

178

184

184

176

170 

164

160

*148

148

134

138

144

142

132

120

120

118

116 

ITS

4,964

160

0.311

0.36

Jan.

112

112 

110

110

110

110

110

110

350

3,690

5.750

4,220

4,340

4,200

2,770

2,160

1,780 

1,440

1,070

915

805

715

550

480

415

390

350

340

325

310

305

38,554

1,244

2.42

2.79

Feb.

300

305 

305

315

340

340

345

345

345

340

340

340

*350

345

340

330

330 

325

320

310

305

300

290

275

270

275

280

285

275

9,165

316

0.615

0.66

Mar.

265 260" 

260

255

255

255

255

255

255

255

255

255

255

250

240

235

225 

225

220

220

225

225

230

240

250

*225

220

235

230

240

7,495

242

0.471

0.54

Apr.

225

235 

265

350

520

1,320

2,490

2,060

1,790

1,920

2,370

2,690

3,310

3,840

3,540

3,730

6.580 

6,480

4,600

3,840

3,460

2,930

2,780

2,440

2,240

2,170

2,160

3,900

5,340

6,390

85,965

2,866

5.58

6.23

May

*5.130

3,500 

3,310

3,200

3,710

3,290

'2,830

2,270

1,860

1,720

1,910

1,690

2,020

2,940

2,490

2,000

1,800 

1,520

1,220

1,100

1,030

923

931

1,180

980

780

980

3,460

2,090

1,450

1, 280

64,594

2,084

4.05

4.67

June

1,510

2,030 

1,550

2,490

2.550

1,920

1,360

1,090

989

1,180

1,150

998

843

720

603

502

427 

357

347

328

304

300

278

264

357

439

368

357

433

338

26,382

879

1.71

1.91

July

291

286 

502

400

286

249

278

427

730

2jl80

1,310

811

610

740

1,440

972

685 

558

479

400

347

304

300

333

502

400

286

234

197

178

163

16,878

544

1.06

1.22

Aug.

160

152 

142

132

127

120

125

127

122

132

144

137

122

105

98

94

92 

 92

90

76

li

87

90

92

98

120

129

105

98

107

166

3,555

115

0.224

0.26

Sept.

223

230 

223

304

282

213

227

200

166

142

137

139

175

190

160

147

147 

210

264

264

713

523

400

363

473

508

394

318

269

230

8,334

278

0.541

0.60

Calendar year 1955: Max 10,200 Mln 39 Mean 786 Cfsm 1.'53 In. 20.75

Water year 1955-56: Max 6,580 Mln 44 Mean 798 Cfsm 1.55 In. 21.12

Peak discharge (base, 6,000 cfs). Jan. 10 (3 p.m.) 6.550 cfs (7.71 ft); Apr. 18 (1 a.m.) 7.840

cfs (8.22 ft); Apr. 30 (1:30 p.m.) 7,100 cfs (7.93 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 21 to Jan. 10, Jan. 21 to Apr. 11.
52 KENNEBEC RIVER BASIN

Sebasticook River near Pittsfield, Maine

Location.--Lat 44°42'55", long 69°24'55", on right bank if miles upstream from Twentyfivemile Stream and 4 miles south of Pittsfield, Somerset County.

Drainage area.--579 sq mi.

Records available. October 1928 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 133.9 ft above mean sea level, datum of 

1929.

Average discharge. 27 years (1929-56), 936 cfs.

Extremes. --Maximum discharge during year, 6,310 cfs Apr. 19 (gage heigl-t, 8.28 ft); minimum daily, 4.8 cfs Sept. 29, 30.

1928-56: Maximum discharge/14,400 cfs Mar. 22, 1936 (gage heigl-t, 13.18 ft); minimum, 2.9 cfs Dec. 30, 1941 (gage height, 0.40 ft); minimum daily, 4.8 cfs Dec. 13, 

1941, Sept. 29, 30, 1956.

Remarks^.--Records excellent except those for periods of ice effect, which are fair. Considerable diurnal fluctuation caused by powerplant above station. Flow partly regulated by powerplants above station and by Great Moose and Sebasticook Lakes and Plymouth Pond (combined capacity, about 2,345,000,000 cu ft).

Revisions. --WSP 1271: Drainage area.

Rating table, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.0 

1.2 

1.4

2.4 

Z.6

225

305

3.0 

3.5

4.0 

5.0 

6.0 

7.0 

8.0 

8.3

500

850

1,300

2,250

3,400

4,600

5,900

6,320

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Of sm

In.

Oct.

17

19

*325

146

122

114

210

12

12

89

89

86

162

192

1£

10

97

91

87

92

112

10

10

122

124

96

83

148

12 

12

2,891

93.3

-

-

Nov.

415

440

445

455

490

630

755

785

785

755

755

735

715

675

655

625

635

665

£45

595

530

505

465

450

450

425

166

435

305 

445

16,831

561

-

-

Dec.

245

290

355

12

200

310

240

162

377

180

14

205

205

190

192

405

19

76

515

150

112

108

320

28

27

130

250

220

112 

200

12

5,861

189

-

-

Jan.

20

142

240

150

84

245

102

32

380

385

845

1,460

1,780

2,270

2,720

2.910

2,850

2,560

2,210

1,890

1,680

1,410

1,170

990

860

755

655

560

500 

435

420

32,710

1,055

-

-

Feb.

265

215

480

~20 525

515

470

138

450

415

335

25

485

395

360

295

445

240

28

515

240

*350

275

380

25

355

375

235

345

9,196

317

-

-

Mar.

215

475

215

63

560

330

310

365

500

470

260

455

305

375

380

455

525

240

460

415

310

320

465

410

SA

500

305

400

435

405

11,247

363

-

-

Apr.

64

575

470

465

805

1,380

1,840

2,200

2,420

2,640

3,230

3,760

4,080

4,480

4,590

4,770

5,220

5,840

6.190

6,190

5,870

5,440

4,990

4,580

4,240

3,940

3,600

3,420

3,450

3,630

104,369

3,479

-

-

May

3,890

*5.990

3,900

3,710

3,620

3,410

3,260

2,960

2,690

2,270

1,920

1,650

1,430

1,290

1,230

1,140

1 , 100

1,030

940

880

635

425_

460

655

680

620

580

995

1,120

1,140

1,130

54,750

1,766

-

-

June

1,130

1,030

965

1,050

1,010

994

931

904

832

805

*787

725.

787

760

752

723

680

641

545

182

405

400

400

8.4

415

270

285

365

410

400

19,586.4

653

-

-

July

8.8

400

395

200

176

375

360

8.0

420

395

320

400

440

425

565

770

769

696

680

667

485

17

600

375

405

420

420

415

12

455

12,358 . 8

399

-

-

Aug.

265

265

235

184

12

*270

285

142

184

172

124

13

178

180

176

180

290

174

12

210

205

178

124

200

180

9.6

235

99

154

200

415

5,550.6

179

-

-

Sept.

184

8.0

8.8

220

81

82

265

6.0

6.8

215

182

;92

192

88

6.0

6.8

410

106

188

198

335

6.0

6.4

260

136

154

150

265

4.8

4.8

3,967.4

132

-

-

Calendar year 1955: Max 5,640 Min 10 Mean 779 Cfsm 1.35 In. 18.29

Water year 1955-56: Max 6,190 Mln 4.8 Mean 763 Cfsm 1.32 In. 17.94

Discharge measurement made on this day. 

Note.--Stage-discharge relation affected by ice De 10-14, Dec. 26 to Jan. 11.
KENNEBEC RIVER BASIN 53 

Cobbosseecontee Stream at Gardiner, Maine

Location.--Lat 44°13'15", long 69°47'25", at dam of Gardiner Water Power Co., in Gardiner, 

Kennebec County, 1.2 miles upstream from mouth.

Dr ainage are a.--217 sq mi.

Records available.--June 1890 to September 1956.

Gage.--Staff gage in pond above dam and in tailrace of powerplant. Datum of gage is 

about at mean sea level.

Average discharge.--66 years, 329 cfs.

Extremes.--Maximum daily discharge during year, 305 cfs, several days in March and April; 

minimum daily, 10 cfs, several days in December, July, and September.

1890-1956: Maximum discharge, 5,020 cfs Mar. 21, 1936 (elevation, 139.4 ft above 

mean sea level); maximum daily, 4,320 cfs Mar. 20, 21, 1936; minimum, leakage only 

when all gates in dam are closed.

Remarks.--Discharge is sum of flow over dam, through gates and water wheels (computed on 

basis of coefficients and experiments), and leakage. Flow regulated by Cobbosseecontee 

Lake (surface area, 8.5 sq mi) and several other lakes above station.

Cooperation. --Records of daily discharge furnished "by S. D. Warren Co.

Revisions (water years).--WSP 541: 1916-20. WSP 1201: Drainage area. WSP 1231: 

1910-15.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

180

TBTT

180

180

180

180

180

180

180

180

180

180

180

180

180

180

180

180

180

180

180

180

190

190

200

200

195

205

195

195

200

5,730

185

-

-

Nov.

185 20"5~

205

200

210

215

215

220

235

235

235

23^

235

235

235

235

240

250

260

240

245

230

225

225

220

-15

220

215

215

210

6,745

225

-

-

Dec.

215

215

205

205

200

200

195

200

200

200

200

195

200

225

235

230

245

230

210

215

205

205

215

210

loo

10

110

200

190

185

190

6,040

195

-

-

Jan.

95

1M

190

185

185

180

180

175

180

195

200

210

225

275

290

300

300

300

300

290

285

295

290

290

290

285

285

290

300

295

300

7,560

244

-

-

Feb.

300

2"9TT

300

230

220

225

225

240

235

240

235

230

230

235

235

235

230

230

235

240

250

250

250

265

280

300

275

295

295

7,300

252

-

-

Mar.

300

300

305

305

305

295

295

295

280

300

295

295

290

300

290

300

300

275

285

285

280

290

280

290

295

290

290

290

285

290

9,060

292

-

"

Apr.

290

300

300

295

505

305

305

300

305

305

305

305

295

295

300

300

290

305

295

290

295

300

285

275

290

300

300

300

290

295

8,920

297

-

-

May

290

275

280

290

290

285

290

295

290

295

285

290

280

275

280

280

295

275

260

270

265

230

225

235

235

240

240

240

250

255

260

8,345

269

-

"

June

£55

255

255

270

275

280

275

285

275

280

270

255

280

275

280

295

290

280

275

275

265

265

255

255

255

250

255

250

250

240

8,020

267

-

"

July

200

10

10

10

10

10

10

10

235

245

24E

245

240

245

240

240

240

245

245

245

245

240

235

245

245

245

245

245

245

240 

240

5,850

189

-

"

Aug.

245

240

240

245

240

240

245

240

245

245

245

240

240

245

240

240

245

240

245

240

245

240

240

235

235

235

235

235

235

240

225

7,445

240

-

-

Sept.

230

225

10

10

230

235

240

235

235

230

230

235

230

230

235

230

230

235

240

240

245

240

235

240

245

240

255

250

250 

250

6,665

222

-

-

Calendar year 1955t Max 895 Mln 10 Mean 305 Cfsm - T" ' "

Waber year 1955-56: Max 305 Min 10 Mean 240 Cfsm - In -
54 KENNEBEC RIVER BASIN

Smaller reservoirs in Kennebec River basin, Maine

Brassua Lake on Moose River, 4 miles southwest of Rockwood, completed in 1928, for power, 

has usable capacity of 8,560,000,000 cu ft between elevations 1,043.0 and 1,073.0 ft. 

Elevation record furnished by Kennebec Water Power Co.

Second Roach Pond on Roach River, 6 miles east of Kokadjo, used for povrer, has usable

capacity of 216,000,000 cu ft between gage heights 0.5 and 10.0 ft. Gage-height record 

furnished by Kennebec Water Power Co.

First Roach Pond on Roach River, at Kokadjo, used for power, has usable capacity of

938,000,000 cu ft between gage heights 1.5 and 8.0 ft. Gage-height record furnished by 

Kennebec Water Power Co.

Moosehead Lake on Kennebec River (see p. 43).

Indian Pond on Kennebec River, 13 miles downstream from East Outlet of Moosehead Lake, 

completed in 1954 for power, has capacity of 830,000,000 cu ft in normal operating 

range between elevations 950.0 and 955.0 ft (total capacity of pond 3,150,000,000 cu ft 

below elevation 955.0 ft). Elevation record furnished by Central Msine Power Co.

Moxle Pond on Moxie Stream, 4^ miles east of The Porks, used for power, has usable capacity of 640,000,000 cu ft between gage heights 6.0 and 14.0 ft. Gage-height record 

furnished by Kennebec Water Power Co.

Flagstaff Lake on Dead River, three-quarters of a mile upstream from BJack Brook, in T. 3, 

" R. 4, completed in 1950 for power, has usable capacity of 12,050,000,000 cu ft between 

elevations 1,110 and 1,146 ft. Elevation record furnished by Kennelec Water Power Co.

Spencer Lake on Little Spencer Stream, 4 miles upstream from mouth, in T. 3, R. 5, used

for power, has usable capacity of 639,000,000 cu ft between gage heights 3.5 and 12.0 ft. 

Gage-height record furnished by Kennebec Water Power Co.

Wyman Pond on Kennebec River, 1-J miles upstream from Bingham, completed1 in 1930 for power, 

has capacity of 2,630,000,000 cu ft in normal operating range between elevations 

465.0 and 485.0 ft (total capacity of pond, 9,080,000,000 cu ft below elevation 

485.0 ft). Elevation record furnished by Central Maine Power Co.

Month-end contents. In millions of cubic feet, water year October 1955 to September 1956

Date

Sept. 30. ..................

Brassua 

Lake

5,805 

2,113 

76 

0 

130 

38 

8 

2,520 

7,770 

8,197 

8,278 

8,157 

8,560

Second 

Roach 

Pond

107 

87 

94 

82 

160 

177 

160 

177 

169 

160- 

134 

11 

6.7

Hote. Wyman Pond contents at 12 p.m. on day 

tionth.

First 

Roach 

Pond

801 

584 

66 

O 

O 

0 

0 

543 

994 

815 

732 

842 

801

Indian 

Pond

3,150 

3,150 

3,150 

3,150 

3,150 

3,123 

3,078 

3,168 

3,150 

3,168 

3,294 

3,294 

3,258

Moxie 

Pond

178 

0 

0 

0 

O 

0 

O 

138 

640 

654 

640 

595 

130

Flagstaff 

Lake

4,954 

2,515 

2,136 

9fO 

2,266 

1,512 

1,836 

6, ITS 

12,OfO 

12,OfO 

9,570 

7,375 

7,434

Spencer 

Lake

378 

0 

0 

0 

0 

0 

0 

249 

639 

729 

823 

110 

103

Wyman 

Pond

8,620 

9,050 

8,940 

8,750 

8,900 

8,820 

8,920 

9,080 

8,940 

8,800 

8,750 

8,850 

8,750

shown. All others at 7 a.m. of first day of following
ANDROSCOGGIN RIVER BASIN 55

Diamond River near Wentworth Location, N. H.

Location.--Lat 44°52'40", long 71°03'25", on left "bank 0.7 mile upstream from mouth and 

lj miles north of Wentworth Location, Coos County.

Drainage area. 153 sq mi.

Records available.--July 1941 to September 1956.

Gage. --Water-stage recorder. Altitude of gage is 1,275 ft (from topographic nar>).

Average discharge.--15 years, 348 cfs.

Extremes. Maximum discharge during year, 4,680 cfs May 13 (gage height, 8.38 ft); minimum, 22 cfs Aug. 18 (gage height, 1.32 ft).

1941-56: Maximum discharge, 8,630 cfs June 16, 1943 (gage height, 10.66 ft), from 

rating curve extended above 3,000 cfs; minimum, 6.8 cfs Aug. 27, 28, 1949, Sept. 1, 

1952 (gage height, 0.81 ft).

Remarks.--Records excellent except those for periods of ice effect, which are fair.

Rating table , water year 1955-56, except periods of ice effect 

in feet, and discharge, in cubic feet per second)

1 to Apr

1.3

1.4 

1.7 

2.0

67

105

2.5 190

3.0 320

4.0 705

1.3 

1.5 

1.7 

2.0

Apr. 6 to Sept. 30

2.5 185

3.0 320

4.0 705

5.0 1,270

ge height,

6.0 2,010

7.0 3,000

7.9 4,050

in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

45

41

40

39

39

39

54

71

68

60

49

45

41

39

39

39

49

84

72

65

79

128

92

77

160

150

104

89

81

80 

435

2,493

80.4

0.525

0.61

Nov.

705

487

283

218

465

487

368

323

289

234

209

200

227

218

314

244

311

298

220

182

166

152

130

170

168

152

144

138

140

142

7,784

259

1.69

1.89

Dec .

138

132

126

128

128

126

126

126

122

122

122

120

118

118

116

112

108

102

97

89

79

71

65

63

66

65

63

60

52

50

49

3,059

98.7

0.645

0.74

Jan.

48

46

46

44

46

44

40

41

52

122

545

472

495

396

295

250

220

205

194

186

180

176

170

164

158

150

148

144

136

132 

134

5,479

177

1.16

1.34

Feb.

126

118

108

110

106

100

98

97

91

89

84

79

74

68

69

*77

75

71

67

66

64

61

58

56

55

62

65

62

61

2,317

79.9

0.522

0.56

Mar.

59

57

60

65

63

61

58

57

57

56

55

64

65

62

59

57

56

55

54

54

55

*57

56

56

55

55

54

54

53

52 52"

1,773

57.2

0.374

0.43

Apr.

51

51

55

61

120

550

525

455

350

285

235

235

290

340

290

275

455

555

455

385

355

378

323

277

*244

269

359

1,310

2,070

2|500

14,103

470

3.07

3.42

May

1,840

1,500

1,790

1,830

1,480

1,800

 1 , 740

1,410

1,110

1,820

1,860

2,040

3,640

4.020

2,840

2,120

1,750

1,110

895

906

750

760

1,300

895

564

453

885

1,540

880

683

1,050

47,261

1,525

9.97

11.49

June

1.070

746

644

674

551

551

413

333

556

499

435

*339

266

219

185

178

148

118

104

94

94

133

101

120

T54

168

109

115

107 

152

9,376

313

2.05

2.29

July

133

148

195

117

82

72

90

120

152

495

244

141

106

143

286

183

118

100

79

66

58

54

54

55

55

53

44

41

38

39

36

3,597

116

0.758

0.87

Avg.

36

36

35

29

29

27

26

25

32

36

79

68

46

38

33

29

*24

22

70

89

53

38

32

28

35

36

51

46

98 

104

 156

1,486

47.9

0.315

0.36

Sept.

146

104

247

146

82

62

56

49

42

36

35

35

35

35

34

33

43

82

102

164

317

159

104

130

582

255

157

114

95 

81

3,362

112

0.732

0.82

Calendar year 1955: Max 4,000 Min 28 Mean 326 Cfsm 2.13 In. 28.90

Water year 1955-56: Max 4,020 Min 22 Mean 279 Cfsm 1.82 In. 24.82

Peak discharge (base. 3.600 cfa).--May 15 (11 p.m.) 4.680 cfs (8.58 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 19 to Jan. 11, Jan. 16 to Apr. 19.
ANDROSCOGGIN RIVER BASIN

Androscoggin River at Errol, N. H.

Location. Lat 44°46'55", long 71°07 I 45", on right bank 0.4 mile downstream from Errol 

Dam, 0.4 mile northeast of Errol, Coos County, and 0.6 mile upstream from Clear Stream.

Drainage area.-- 1,045 sq ml.

Records available.--January 1905 to September 1956. October 1922 to November 1943, monthly 

 discharge only, published In WSP 1301. Published as "at Errol Dam p-ior to 1922.

c Water-stage recorder. Datum of gage Is 1,227.30 ft above mean sea level, datum 

cJf 1929. Prior to Dec. 8, 1943, movable rod gage at Errol Dam at datum 5.0 ft higher.

Average discharge.--51 years, 1,881 cfs (adjusted).

Extremes. Maximum discharge during year, 5,460 cfs May'14 (gage height, 5.04 ft); minimUmi905-56: Maximum^ally'dlscharge, 15,700 cfs June 18, 1943; minirrum dally, leakage 

only at various times when gates in dam were closed.

Instantaneous maximum not available prior to Dec. 9, 1943.

Remarks.--Records excellent. Plow regulated by Kennebago, Rangeley, Mocselookmeguntlc, 

Richardson, Umbagog and Aziscohos Lakes (see p. 64).

Cooperation.--Records prior to Dec. 9, 1943, furnished by Union Water Fewer Co.

Revisions.--WSP 1001: Drainage area.

Rating table, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

0.8 

1.4 

2.0 

2.5

389

716

1,200

1,760

3.0 

4.0 

5.1

2,420

3,860

5,560

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Itotal

Mean

(t)

Oct.

2.140

2,050

1,930

1,900

1,900

1,880

1,840

1,800

1,810

1,810

1,800

1,790

1,810

1,810

1,710

1,630

1,610

1,520

1,570

1,590

1,580

1,560

1,570

1,520

1,380

1,410

1,350

1,390

1,410

1,410

1,110

51,590

1,664

-1,505

Nov.

685

830

1,170

1,210

900

895

1,180

1,190

1,140

1,150

1,190

1,160

1,190

1,220

1,210

1.540

1,040

1,170

1,150

1,140

1,250

1,280

 1,310

1,290

1,260

1,320

1,350

1,390

1,440

1,470

35,720

1,191

+144

Dec.

1,420

1,400

1,390

1,380

1,380

1,430

1,470

1,420

1,410

1,420

1,430

1,390

1,360

1,360

1,360

1.550

1,370

1,370

1,380

1,420

1.500

Tt5oo

1,490

1,460

1,460

1,440

1,440

1,440

1,440

1,430

1,430

43,940

1,417

-1,167

Jan.

1.420

1,390

1,390

1,390

1,390

1,380

1,380

1,380

1,200

710

410

460

425

785

980

710

,060

,260

,320

,380

,390

,380

,370

,390

,420

,420

,400

,370

,370

, 360

,420

37,110

1,197

+594

Feb.

1.500

1,570

1,580

1,580

1,580

1,580

1,550

1,520

1,560

1,580

1,560

1,550

1,550

1,530

1,550

1,590

1,630

1,620

1,610

1,590

1,580

1,590

1,590

1,620

1,640

1,580

1,590

1,580

1,560

 

45,710

1,576

-1,070

Mar.

1,640

1.660

1,620

1,610

1,580

1,610

1,620

1,630

1,620

1,620

1,620

1,610

1,620

1,620

1,620

1,660

1,640

1,630

1,630

1,610

1,610

1,590

1,560

1,580

1,590

1,620

1,630

1,580

1,560

1,570

1,580

49,940

1,611

-1,088

Apr.

1,560

1,550

1,500

1,320

1,070

745

645

680

915

1,140

1,250

1,030

850

948

1,O4O

1,030

956

988

1,180

1,280

1,030

1,04O

1,430

1,360

1,450

1,400

1,280

760

575

2.700

34,702

1,157

+2,048

Hay

3,260

3,340

3,690

3,760

3,790

3,500

3,150

1,970

1,410

1,500

1,340

1,820

5,200

5.410

5,200

4,530

3,050

2,480

1,750

1,340

1,390

1,590

1,590

1,410

1,560

1,590

1,670

2,200

2,270

1,980

1,950

78,070

2,518

+6,324

June

2,460

2,560

2,360

2,520

5.160

5,090

2,980

2,760

2,760

2,770

2,760

2,760

2,740

2,510

1,860

1,770

1,790

1,860

1,960

1,980

1,990

1,990

1,990

1,880

1,810

1,930

1,940

1,890

1,960

1,970

68,560

2,285

+ 17

July

1,970

1,940

2,080

2,190

2,170

2.250

2,080

1,750

1,600

1,570

1,820

1,670

1,700

1,560

1,240

1,510

1,570

1,650

1,700

1,770

1,770

1,770

1,850

1,850

1,650

1,600

1,630

1,630

1,620

1,650

1,650

54,180

1,748

-851

Aug.

1,700

1,710

1,750

1,770

1,770

1,760

1,760

1,760

*1,750

1,750

1,720

1,720

1,760

1,800

1,810

1,860

1,940

1,940

1,800

1,840

1,890

,950

,940

,900

,900

,890

,880

,860

,820

,800

,520

55,980

1,806

-1,605

Sept.

1,440

1,550

1.420

1,460

1,680

1,720

1,680

1,680

1,750

1,790

1,810

1.820

1,820

1,820

1,770

1,760

1,750

1,680

1,760

1,680

1,580

1,680

1,720

1,610

1,490

1,450

1,520

1,610

1,640

1,660

49,720

1,657

-942

Adjusted for change In reservoir contents

Mean 

Cfsm

159 

0.152 

0.18

1,33£

1.2E

1.4:

Calendar year 1955: 

Water year 1955-56:

250 

0.239

0.28

1,791 

1.71 

1.97

506 

0.484 

0.52

525 

0.500 

0.58

3,205 

3.07 

3.42

8,842 

8.46 

9.75

Observed

Max 9,580 Hin 685 Mean 2,254 

Max 5,410 Hin 410 Mean 1,654

2,302 

2.20 

2.46

897 

0.858 

0.99

201 

0.192 

0.22

715 

0.684 

0.76

Adjusted

Mean 1,776 Cfsm 1.70 in. 23.07 

Mean 1,733 Cfsm 1.66 In. 22.56

* Discharge measurement made on this day. 

t Change in contents, equivalent in cubic feet per second, in Kennebago, Rangeley, Hooselookmeguntic, Richardson, TJmbagog, and Aziscohos Lakes.
ANDROSCOGGIN RIVER BASIN 57 

Androscoggin River near Gorham, N. H.

Location ~Lat 44° 26'30", long 71° 11'15", on right bank at Pulsifer Rips, 2 miles down- 

 stream from Dead River and 4 miles upstream from Gorham, Coos County.

Drainage area. 1,363 sq mi.

Records available . October 1913 to September 1956. October 1922 to February 1529 monthly 

discharge only, published in WSP 1301. Published as "at Berlin" prior to October 1928.

. Water-stage recorder since Mar. 16, 1929. Datum of gage is 832.88 ft abcve mean 

sea level, datum of 1929. Prior to Sept. 30, 1922, staff gages showing head and tailwater elevations at site 3 miles upstream at different datum.

Average discharge.--43 years, 2,443 cfs (adjusted).

Extremes.--Maximum discharge during year, 8,250 cfs May 15 (gage height, 6.93 ft); minimum 

daily, 1,510 cfs Dec. 20.

1913-56: Maximum daily discharge, 20,000 cfs June 18, 1917, Apr. 30, 1923; minimum 

(since 1929), 456 cfs Aug. 10, 1947 (gage height, 1.74 ft), from rating curve extended 

below 1,400 cfs; minimum daily, 795 cfs Mar. 15, 1948.

Remarks. Records excellent except those for period of backwater from manufacturing waste, 

which are good. Plow regulated by powerplants above station and by Kennebago,-Rangeley, 

Mooselookmeguntic, Richardson, Dmbagog and Aziscohos Lakes (see p. 64).

Revisions. WSP 1001: Drainage area.

Rating table, water year 1955-56, except period of backwater from manufacturing 

waste (gage height, in feet, and discharge, in cubic feet per second)

3.2

3.5 

4.0 

4.5

1,500

1,820

2,460

3,230

4,050

6,000

7,920

Discharge, in cubic fe<=t per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27 

28

29 

30

31

Total

Mean

(t)

Oct.

2,100

2,100

1,980

1,900

1,890

1,890

1,930

1,890

1,880

1,870

1,860

1,830

1,820

1,860

1,840

1,730

1,730

1,760

1,680

1,710

1,730

1,710

1,710

1,700

1,630

1,620

1,590 

*l,530j

1,570 

1,570

2,000

55,610

1,794

-1,505

Nov.

2,230

1,780

1,600

1,720

2,140

2,O60

1,780

1,880

1,720

1,630

1,590

1,580

1,570

1,620

1,660

1,590

2,070

1,710

1,680

1,540

1,520

1,590'

1,550

1,670

1,G10

1,530

1,580 

1,600

1,630 

1,690

 

51,120

1,704

-1-144

Dec.

1,700

1,610

1,630

1,610

1,630

1,62O

1,660

1,630

1,600

1,580

1,590

1,620

*1,580

1,560

1,560

1,540

1,520

1,590

1,560

1.510

1,530

1,590

1,620

1,640

1,630

1,600

1,560 

1,530

1,570 

1,620

1,570

49,360

1,592

-1,167

Jan.

1,550

1,530

1,540

1,630

1,610

1,560

1,540

1.520

1,890

2.790

2,780

2,240

2,390

1,990

2,000

1,830

1,590

1,720

1,790

1,800

1,780

1,770

1,760

1,740

1,760

1,780

1,750 

1,710

1,680 

1,700

1,690

56,410

1,820

+594

Feb.

1,750

1,810

1,860

1,840

1,830

1,840

1,840

1,790

1,790

1,820

1,820

1,820

1,820

1,810

1,810

*1,790

1,860

1,840

1,840

1,830

1,820

1,810

1,810

1,790

1,870

1,870

1,830 

1,860

1,810

 

52,860

1,823

-1,070

Mar.

1,810

1,870

1,860

1,860

1,830

1,810

1,830

1,830

1,810

1,810

1,860

1,840

1,810

1,810

1,810

1,810

1,830

1,820

1,810

1,840

1,810

1,830

1,820

1,800

1,790

1,810

1,820 

1,820

1,780 

1,780

1,790

56,410

1,820

-1,088

Apr.

1 , 800

1,810

1,840

2,000

2,190

2,540

2,290

2,160

2,000

2,020

2,100

2,220

2,180

2,320

2,190

2,290

2,900

3,120

2,940

2,820

2,720

2,500

2,500

2,420

*2,290

2,400

2,600 

3,710

4,980 

6,400

 

78,250

2,608

-1-2,048

May

7,280

6,110

6,5OO

6,830

6,830

6,640

6,310

4,940

3,520

3,230

3,440

3,410

4,780

'7,160

7,800

6,960

5,600

4,120

3,390

2,660

2,240

2,190

2,270

2,280

2.090

2,190

2,760 

4,500

3,910 

3,420

2,990

138,350

4,463

4-6,324

June

3,370

3,500

3,260

3,310

3,650

5.880

3,690

5,440

5,530

3,570

5,310

*3,210

3,150

3,020

2,290

2,090

1,960

1.950

1,950

1,990

2,000

2,050

2,040

2,060

1,980

1,890

1,960 

1,980

1,950 

1,960

79,530

2,651

+17

July

1,950

2,110

2,290

2,000

2,130

2,180

2,240

1,980

2,000

2,240

2,220

1,900

1,750

2,090

2,060

1,940

1,810

1,750

1,740

1,750

1,750

1,740

1,760

1,820

1,810

1,750

1,730 

1,760

1,740 

1,740

1,750

59,510

1,920

-851

Aug.

1,750

1,830

1,820

1,870

1,820

1,840

1,820

*1,830

1,860

i,£60

1,£70

1,£50

1,E20

1,£50

1,£40

1,840

1,940

1,980

2,020

1,890

1,920

1,980

1,980

1,990

1,980

1,960

1,980 

1,950

1,930 

2,0?0

2,400

59,510

1,913

-1,605

Sept.

2.560

2,040

2,360

2,090

1,940

1,980

2,020

1,940

1,900

1,930

1,950

1,980

1,990

1,960

1,990

1,960

2,010

2,070

2,000

2,090

2,240

2,070

2,040

2,120

2,250

2,050

1.840 

1,880

1,900 

1,890

 

60,820

2,027

-942

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

289 

0.212 

0.24

1,846 

1.5 1.5'

Calendar year 1955 : 

Water year 1955-56 :

425 

0.512 

0.36

2,414 

1.77 

2.04

753 

0.552 

0.60

732 

0.537 

0.62

4,656 

3.42 

3.82

10,790 

7.91 

9.12

Observed

Max 10,700 Min 1,51O Mean 2,723 

Max 7,800 Min 1,510 Mean 2,179

2,668 

1.96 

2.19

1,069 

0.784 

0.90

308 

0.226 

0.26

1,085 

0.796 

0.89

Adjusted

Mean 2,265 Cfsm 1.66 Ir . 22.56 

Mean 2,258 Cfsm 1.66 Ir . 22.56

made this day.

t Change in contents, equivalent in cubic feet pe 

tic, Richardson, Umbagog, and Aziscohos Lakes.

Note.--Backwater from manufacturing waste Oct. 7 to Jan. 9.

>nd, in Kennebago, Rangeley, Mooselookmegun-
58 ANDROSCOGGIN RIVER BASIN

Androscoggin River at Rumford, Maine

Location. Lat 44"32'45", long 70"32'35", on left bank, at upper powerpJant of Rumford 

Palls Power Co., 0.8 mile upstream from Swift River at Rumford, Oxford County.

Drainage area. 2,067 sq mi.

Records available. May 1892 to September 1956 (October 1903 to September 1904 monthly 

discharge only, published in WSP 1301).

Gage. Gages in pond above dam and in tailrace of upper plant. Prior to Aug. 1, 1937, 

gages in pond and tailrace of middle plant.

Average discharge. 64 years, 3,673 cfs (adjusted).

Extremes. Maximum daily discharge during year, 15,400 cfs Apr. 30; minimum daily, 1,450 

cfs Dec. 21.

1892-1956: Maximum discharge, 74,000 cfs Mar. 20, 1936; minimum cfaily, 625 cfs 

Mar. 27, 1911.

Remarks. Discharge computed from flow over upper dam and through wheels. Plow regulated 

by Kennebago, Rangeley, Mooselookmeguntic, Richardson, Umbagog and Aziscohos Lakes 

(see p. 64).

Cooperation. Records furnished by Rumford Falls Power Co. 

Revisions. WSP 1001: 'Drainage area.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2 

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21 

22

25

24

25

26 

27

28 

29

50

51

Total

Mean

(t)

Oct.

2,140 

2,210 

2,070

1,940 

1,980

1,870

2,550

2,560

2,110

2,080

2,000

1,880

1,930

1,880

2,000

2,180

2,460

3,120

2,310

2,120

2,020 

2,260

2,030

1,920

2,070

2,020 

1,970

1,880 

1,790

1.780

6,450

69,140

2,250

-1,505

Nov.

8,690 

5,660 

3,350

3,150 

6,700

5,280

3,580

3,230

3,020

2,670

2,600

2,500

2,490

2,430

2,470

2,380

5,070

2,940

2,550

2,510

2,110 

2,070

1,870

2,150

2,510

1,850 

1.620

1,740 

1,920

1,690

90,580

5,013

+144

Dec.

1,900 

1,790 

1,800

1,800

1,720

1,720

1,620

1,650

1,850

1,720

1,790

1,890

1,810

1,890

1,870

1,840

1,670

1,760

1,820

1,610

1.450 

1,480

1,580

1,550

1,920

1.960 

1,660

1,590 

1,710

1,510

1,650

55,560

1,728

-1,167

Jan.

1,600 

1.490 

1,560

1,650 

1,750

1,680

1,650

1,800

6,120

11.100

9,800

7,260

9,420

5,950

5,700

5,040

5,550

2,780

2,710

2,280

2,520 

2,520

2,250

2,250

2,210

1

2,180 

2,290

2,000 

2,150

2,080

1,990

104,850

3,382

+594

Feb.

2,050 

2,050 

2,150

2,120 

2,180

2,240

2,170

2,170

2,110

2,100

2,120

2,180

2,150

2,120

2,150

2,080

2,000

2,140

2,070

2,180

2,060 

2,010

1.890

2,000

2,030

2,140 

2,160

2,190 

2,150

61,160

2,109

-1,070

Mar.

2,110 

1,990 

2,030

2,080 

2,110

1,990

2,040

2,030

1,940

1,820

1,920

2,060

2,120

2,080

2,020

2,000

1,900

1.800

2,000

2,060

2,050 

2,120

2,090

2,150

2,020

2,050 

2,050

2,020 

2,050

1,970

2,040

62,670

2,022

-1,088

Apr.

2.000 

2,120 

2,250

2,950 

5,570

7,020

6,940

5,800

4,570

5,810

5,790

4,280

4,650

4,860

4,560

4,960

8,540

7,890

6,400

5,700

5,590 

5,370

4,770

4,270

3,820

5,960 

4,480

8,950 

15,200

15.400

168,050

5,602

+2,048

May

11)900

12,600 

12,700

12,200

11,200

9,250

6,780

6,870

7,090

7,140

10,900

11,700

12,000

10,600

9,230

6,630

5,350

4,680

5,830 

3,580

5,800

5,960

5,520

5.020 

6,830

11,200 

7,270

5,560

5,050

251,820

8,125

+6,524

June

4,800 

4,680 

6,050

7,190 

6,180

5,510

5,050

4,470

4,240

4,340

4,200

5,970

5,700

5,500

5,110

2,850

2,470

2,310

2,310

2,290

2,320 

2,390

2,270

2,490

2,560

2,370 

2,250

2,510 

2,320

2,540

107,000

5,567

+17

Jvly

2,260 

2,540 

2,450

2,250 

2,750

2,370

2,700

2,670

3,720

£.420

3,550

2,940

2,510

5,650

3,900

3,040

2,670

2,410

2,180

2,150

2,100 

1,990

2,410

2,050

2,040

2,080 

2,000

1.790 

1,920

1,820

1,880

7*3,950

2,578

-85]

Aug.

1,870 

1,920 

1,940

1,870 

1,960

1,900

1,920

1,880

1,910

1,970

1,960

2,070

1.770

2, 010

1,860

1,870

1,900

2,070

2,070

2,150

1,920 

1,960

2,150

2,120

2,020

2,040 

2,050

2,070 

1,980

2,110

5.280

62,510

2,016

-1,605

Sept.

4,060 

5,190 

5,450

5,160 

2,350

2,220

2,480

2,380

2,210

2,010

2,040

2,120

2,060

2,140

2,140

2,090

2,240

2,590

2,400

2,880

3,980 

3,070

2,480

3,080

3,550

5,110 

2,590

2,550 

2,570

2,180

78,950

2,651

-942

Adjusted for change In reservoir contents

Mean 

Cfsm 

In.

725 

0.351 

0.40

3,15 

1.5

1.7

Calendar year 1955: 

Water year 1955-56:

7 561 

5 0.271 

L 0.31

5,976 

1.92 

2.21

1,059 

0.503 

0.54

934 

0.452 

0.52

7,650 

3.70 

4.13

14,450 

6.99 

8.06

Observed

Max 21,400 Min 1,450 Mean 3,867 

Max 15,400 Min 1,450 Mean 3,251

3,584 

1.73 

1.93

1,727 

0.836 

0.96

411 

0.199 

0.23

1,689 

0.817 

0.91

Adjusted

Mean 3,409 cf,'m 1.65 In. 22.38 

Mean 3,330 Cf>m 1.61 In. 21.91

T Change in conterits, equivalent in cubic feet per second, in Kennebago, Rang^ley, Mooselookmeguntlc, Richardson, Umbagog and Aziscohos Lakes.
ANDROSCOGGIN RIVER BASIN 59

Swift River near Roxbury, Maine

Location.--Lat 44°38'30", long 70°35'15", on left bank 2^ miles dovmstream from Roxbury, 

Oxford County, and 6 miles upstream from mouth.

Drainage Brea. 95.8 sq mi.

Records available. June 1929 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 615.67 ft above mean sea level, datum of 

1929.

Average discharge. 27 years, 196 cfs.

Extremes.--Maximum discharge during year, 3,000 cfs Jan. 10 (gage height, 6.09 ft); maximum gage height, 6.86 ft Jan. 10 (backwater from ice); minimum discharge, 10 cfs Oct. 4, 

5, 6 (gage height, 1.01 ft).

1929-56: Maximum discharge, 14,500 cfs June 15, 1942 (gage height, 12.42 ft), from 

rating curve extended above 7,000 cfs; maximum gage height, 12.58 ft Sept. 17, 1932; 

minimum discharge, 3.8 cfs Sept. 16, 17, 1948 (gage height, 0.93 ft).

Remarks. Records excellent except those for periods of ice effect or no gage-hsight record, which are fair.

Revisions (water years). WSP 801: 1934(m). WSP 1031: Drainage area. WSP 1311: 1937- 

38(M), 1942(M).

Rating table, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second) 

1.0 9.8 3.0 437

1.2 19 3.5 680

1.4 33 4.0 1,010

1.7 69 5.0 1,810

2.0 124 5.2 2,010

2.5 255

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

14

12

11

10

10

10

21

35

34

24

18

16

14

14

14

14

39

99

47

31

27

40

32

26

56

55

39

32

29

27

500

1,150

37.1

0.387

0.45

Nov.

885

590

176

157

670

330

214

168

141

116

108

108

120

112

120

100

220

186

118

93

88

86

84

85

76

69

66

61

56

53

5,234

174

1.82

2.03

Dec.

48

43

42

41

40

40

39

59

58

58

38

37

36

*35

34

33

32

51

52

31

51

31

30

30

29

30

30

29

29

2828"

1,072

34.6

0.561

0.42

Jan.

28

27

27

27

27

27

26

43

1,180

1.950

1.16O

758

1,020

55O

345

180

124

93

*71

68

66

65

63

62

61

59

58

58

56

56

55

8,350

269

2.81

3.24

Feb.

55

55

55

54

54

54

53

58

54

55

55

55

53

53

*53

53

51

51

51

51

50

49

48

43

44

49

58

48

49

1,505

51.9

0.542

O.E8

Mar.

50

47

48

48

45

44

44

44

44

44

44

47

43

42

42

41

41

41

41

41

41

*45

54

53

50

50

44

45

45

44

44

1,392

44.9

0.469

0.54

Apr.

44

49

62

100

210

370

300

240

215

183

176

225

316

375

298

323

843

*658

458

398

383

353

302

242

226

268

585

1,200

1,240

1.640

12,080

405

4.21

4.70

May

989

802

989

905

940

975

829

600

517

757

669

825

1,470

1,070

802

642

570

590

542

558

285

288

414

512

208

176

850

745

410

545

515

19,969

644

6.72

7.75

June

480

398

490

703

53T

364

258

202

226

226

208

168

157

114

95

79

68

59

55

50

51

56

47 62

84

61

61

116

69

61

5,579

186

1.94

2.16

July

51

215

137

74

55

50

108

99 '250

538

154

100

79

240

252

134

91

78

61

50

44

44

50

53

42

37

53

31

27

24

24

5.005

96.9

1.01

1.16

Aug.

25

23

20

19

19

23

18

17

17

16

25

21

18

15

14

13

12

ii

12

15

12

12

11

12

19

18

25

23

32

40

56

589

19.0

0.198

0.25

Sept.

118

80

250

92

70

60

160

90

60

47

41

3858'

54

88

80

100

240

150

120

600

500

150

190

300

210

100

72

60

48

4,026

134

1.40

1.56

Calendar year 1955: Max 2,260 Mln 9.4 Mean 160 Cfsm 1.67 In. 22.72

Water year 1955-56: Max 1,930 Mln 10 Mean 175 Cfsm 1.83 In. 24.82

Peak discharge (base, 2j_400 cfs). --Jan. 1O (7 a.m.) 3,000 cfs (6.09 ft).

eight

records, and records of nearby streams.
60 ANDROSCOGGIN RIVER BASIN

Nezinscot River at Turner Center, Maine

Location. Lat 44*16'10", long 70°13'50", on left bank 500 ft upstream from upper highway 

bridge at Turner Center, Androscoggin County, and 3 miles upstream from mouth.

Drainage area. 171 sq mi.

Records available.--August 1941 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 270 ft (from topographic map).

Average discharge. 15 years, 303 cfs.

Extremes.--Maximum discharge during year, 2,550 cfs Apr. 18 (gage height, 5.12 ft); minimum, 5.6 cfs Aug. 29 (gage height, 0.72 ft).

1941-56: Maximum discharge, 13,900 efs Mar. 27, 1953 (gage height, 11.18 ft); minimum, that of Aug. 29, 1956.

Remarks. Records excellent except those below 50 cfs, which are good, ard those for 

periods of ice effect, which are fair.

Rating table, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet pep second)

.9 

1.1

1.3 

1.6

2.0 

2.5 

3.0 

3.5 

4.0 

5.0

195

375

620

950

1,350

2,350

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

24

24

24

23

23

23

29

31

33

34

34

34

33

32

32

31

35

40

41

43

46

58

60

60

63

63

63

63

61

60

174

1,394

45.0

0.263

0.30

Nov.

640

796

535

367

5OO

576

470

363

292

239

219

239

222

198

183

174

198

225

201

162

136

122

114

106

98

93

87

80

77

II

7,783

259

1.51

1.68

Dec.

 55 66

63

61

60

58

57

55

53

57

55

53

52

*50

57

55

52

49

47

47

47

46

45

45

43

42

42

41

41

41

41

1,586

51.2

0.299

0.34

Jan.

42

42

41

41

42

43

43

47

196

1,310

1,750

1,660

2.050

1,980

1,380

964

734

515

*415

345

295

265

240

210

196

174

158

148

140

13O

130

15,726

507

2.96

3.41

Feb.

122

TTS

114

110

102

104

106

106

110

106

106

110

112

104

102

loo

98

loo

106

108

104

98

96

94

98

106

120

118

114

3,092

107

0.626

0.68

Mar.

110

108

112

118

122

118

118

120

122

126

136

138

140

138

136

140

140

138

136

132

128

128

126

122

120

118

118

*118

118

118

118

3,880

125

0.731

0.84

Apr.

120

126

140

166

225

465

810

1,020

901

859

936

1,080

1,320

1,470

1,390

1,450

2,080

2.590

1,810

1,400

1,180

1,040

971

908

852

768

*716

866

1,210

1,640

30 , 309

1,010

5.91

6.59

May

1 . 440

1,010

887

859

845

768

650

550

475

434

398

351

335

323

307

288

284

242

242

225

207

195

201

246

225

195

390

1,050

820

555

456

15,478

499

2.92

3.37

June

434

582

620

859

782

650

515

420

363

347

335

295

232

189

162

142

125

112

102

94

91

93

89

89

114

129

118

118

112

102

8,415

280

1.64

1.83

July

93

87

80

75

70

75

120

148

222

490

470

351

331

398

429

311

232

177

150

129

116

1L6

120

122

120

106

94

87

77

70

68

5,534

179

1.05

1.21

Aug.

66

65

60

58

55

53

52

50

49

*47

47

49

46

45

71

108

66

66

52

52

47

27

9.3

7.8

7.5

6.8

6.1

5.8

5.8

6.1

14

1,300.2

41.9

0.245

0.28

Sept.

196

228

204

192

136

104

122

136

108

87

73

66

60

61

94

100

160

311

256

225

547

288

210

278

588

327

256

207

174

150

5,544

185

1.08

1.20

Calendar year 1955: Max 1,660 Mln 18 Mean 234 Cfsm 1.37 In. 18.54

Water year 1955-56: Max 2,390 Mln 5.8 Mean 273 Cfsm 1.60 In. £1.73

Peak discharge (base. 1.700 efs). Jan. 13 (lO p.m.) 2,250 cfs (4.88 ft); Apr. 18 (5 a.m.) 2,550 

=fs (5.12 fb)j Apr. 30 (5 p.m.) 1,710 cfs (4.39 ft). 

* Discharge measurement made on this day. 

Note_. Stage-discharge relation affected by Ice Nov. 2O to Jan. 9, Jan. 18 to
ANDROSCOGGIN RIVER BASIN 61

Little Androscoggin River near South Paris, Maine

Location. Lat 44°17'05'', long 70°32'10", on right bank Just upstream from B'scoe Palls, 

4-f miles upstream from South Paris, Oxford County.

Drainage area. 76.2 sq mi.

Records available . September 1913 to April 1924, October 1931 to September 1956.

Gage. Water-stage recorder and concrete control. Datum of gage is 394.48 f; above mean 

sea level, datum of 1929. Prior to Apr. 30, 1924, chain gage at same site and datum.

Average discharge.--35 years (1913-23, 1931-56), 138 cfs.

Extremes. Maximum discharge during year, 1,220 cfs Apr. 17 (gage height, 6.30 ft); 

minimum, 4.2 cfs Oct. 6 (gage height, 1.52 ft).

1913-24, 1931-56: Maximum discharge, 8,000 cfs Mar. 27, 1953 (gage height, 12.41 

ft), from rating curve extended above 2,800 cfs, verified by computation of flow over 

dam at South Paris; minimum, 1 cfs Aug. 16, 1914, Feb. 22 to Mar. 5, 1920.

Remarks. Records excellent. Occasional slight diurnal fluctuation at low and medium 

flow by saw and gristmills above station.

Revisions (water years). WSP 726: Drainage area. WSP 1301: 1915-23(M).

Rating table, water year 1955-56 (gage height, In feet, and discharge,

in cubic feet per second) 

(Stage-discharge relation affected by ice Jan. 18, 19)

1.5

1.6 

1.8 

2.0 

2.5

3.8

5.8

11

18

49

3.0 

3.5 

4.0 

5.0 

6.2

180

285

585

1,150

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7e

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf sm

In.

Oct.

6.0

7.1

5.8

5.4

4.4

I 4.2

28

24

17

14

11

10

8.8

8.6

9.1

17 

40

28

19

17

17

15

14

16

15

16

17

16

15

188

628.4

20.3

0.266

0.31

Nov.

390

325

186

130

330

272

184

132

104

82

78

90

78

70

69

74

100 

106

82

69

60

58

48

51

52

44

40

38

36

j33

3,411

114

1.50

1.67

Dec.

31

28

29

29

55

33

29

29

28

28

26

25

26

22

24

27

22 

23

22

18

16

14

11

13

14

14

14

13

11

12

11

675

21.8

0.286

O. 33

Jan.

11

11

10

IT

11

11

11

18

365

840

820

588

880

700

405

287

226 

174

142

105

94

86

76

66

61

56

53

45

40

41

42

6,286

203

2.66

3.07

Feb.

40

40

42

39

42

41

44

48

47

46

43

46

48

47

47

46

42 

44

44

43

42

40

40

38

39

48

47

45

41

1,259

43.4

0.570

0.61

Mar.

39

40

41

43

43

42

42

42

47

47

43

45

43

43

43

40

40 

45

41

41

41

44

50

50

47

46

43

42

41

42

43

1,339

43.2

0.567

0.65

Apr.

43

43

64

76

194

340

448

426

332

297

335

417

500

540

513

582

1.100 

920

660

533

486

448

405

365

327

*319

322

526

750

866

13,177

439

5.76

6.43

May

620

442

464

435

467

376

307

252

212

208

192

176

184

184

174

156

156 

135

122

111

98

89

98

124

98

84

310

660

359

245

196

7,734

249

3.27

3.77

June

178

186

241

362

283

210

159

120

114

118

109

92

76

66

56

48

43 

36

32

29

28

32

28

39 '69

57

44

51

41

33

2,980

99.3

1.30

1.45

July

29

28

28

24

21

26

73

66

240

490

270

159

138

330

278

172

115 

85

64

54

45

42

48

50

44

40

32

28

24

20

18

3,081

99.4

1.30

1.50

Aug.

17

16

14

13

12

10

10

11

*10

10

16

14

12

10

9.7

9.1

8.3 

8.0

8.0

8.3

8.0

8.0

7.8

8.0

8.3

8.6

8.0

7.8

7.3

52f~ 7.1

357.3

11.5

0.151

0.17

Sept.

165

92

350

158

85

63

205

135

82

60

51

45

40

47

118

80

142 

272

167

180

265

169

118

240

265

180

138

111

101

92

4,216

141

1.85

2.06

Calendar year 1955: Max 930 Min 1.8 Mean 108 Cfsm 1.42 In. 19.19

Water year 1955-56: Max 1,1OO Min 4.2 Mean 123 Cfsm 1.61 In. 22.02

Peak: discharge (base. l.OOO cfs). Jan. 13 (8 p.m.) 1,O20 cfs (5.98 ft); Apr. 17 

cfs (6.30 ft).

* Discharge measurement made on this day.

p.m.) 1,220
62 ANDROSCOGGIN RIVER BASIN

Little Androscoggin River near Auburn, Maine

Location. Lab 44°03 I 50", long 70°16 I 25", on right bank just upstream fro*n highway bridge, 

at Littlefields, 3 miles southwest of Auburn, Androscoggin County, and 3.6 miles upstream from mouth.

Drainage area. 328 sq mi.

Records available, October 1940 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 215 ft (from topographic map).

Average discharge. 16 years, 561 cfs (adjusted).

Extremes. Maximum discharge during year, 3,510 cfs Apr. 18 (gage height, 6.83 ft); minimum, 48 cfs Oct. 30 (gage height, 1.36 ft).

1940-56: Maximum discharge, 16,500 cfs Mar. 28, 1953 (gage height, 14.76 ft); minimum, 14 cfs Oct. 14, 22, 1949; minimum gage height, 1.07 ft Sept. 8, 1941. 

Maximum discharge known, 16,800 cfs Mar. 20, 1936, at mouth of rive*-.

Remarks. Records excellent. Plow regulated by Pennesseewassee and Thompson Lakes (see 

p. 64 ) and several powerplants above station.

Rating table, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

1.3 

1.5 

2.0 

2.5 

3.0

39

71

190

356

565

4.0 

5.0 

6.0 

6.9

1,120

1,830

2,670

3,590

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18 

19

20

21

22

23

24

25

26

27

28

29

30

31

Ttotal

Mean

(t )

Oct.

184 

TT5 

157

131

126

126

162

146

139

136

*129

122

119

117

117

112

124

136 

134

139

136

136

129

126

126

124

80

57

51

50

180

3,921

126

-57

Nov.

575 

832 

787

670

826

862

T353

700

596

547

498

434

406

379

371

364

406

394 

383

341

302

288

277

241

255

288

261

264

305

530

14,171

472

+68

Dec.

288 

274 

274

274

271

268

248

264

251

251

241

232

229

219

219

216

199

204 

193

173

179

187

190

176

77

77

162

190

204

202

179

6,611

213

-31

Jan.

79 

61 

66

59

6T

61

62

64

556

1,570

2,110

2,400

2.670

2,650

2,320

1,770

1,400

1,120 

856

*765

670

560

511

520

476

434

410

371

330

308

316

25,506

826

+131

Feb.

316 

308 

308

308

294

284

298

338

352 34"9"

326

312

302

323

323

323

298

323

294

291

302

284

288

*274

352

345

345

341

______

9,095

314

-12

Mar.

345 

349 

345

356

352

345

356

330

379

367

383

383

383

383

371

338

394 

390

434

489

524

 555- 556

520

511

511

502

494

511

520

13,022

420

-109

Apr.

502 

494 

520

655

862

1,130

1,610

1,820

1,770

1,730

1,810

1,960

2,180

2,340

2,310

2,480

3,010

5.410 

3,310

2,770

2,370

2,090

1,950

1,810

1,640

1,450

*I,290

1,540

1,650

2,200

54,443

1,815

+137

May

2.290 

2,000 

1,690

1,570

1,510

1,430

1,280

1,090

940

852

748

685

650

650

660

640

610

606

583

529

468 480-

502

480

480

485

640

1,090

1,270

1,100

904

28,892

932

+65

June

792 

832 

910

1,100

1.170

1,080

934

792

660

552

554

542

480

463

494

430

379

330 

308

294

284

274

264

264

277

291

294

294

284

268

15,870

529

-6

July

254 

241 

194

86

64

73

101

103

205

430

675

630

606

743

BTO

836

804

6^0

476

442

418

533

5S4

5*9

530

505

277

251

235

222

12,141

332

-14

Aug.

229

m204

199

193

202

216

219

222

219

213

176

84

62

59

56

56 

56

52

56

68

66

68

69

71

86

99

105

112

154

4,117

115

-76

Sept.

554

450

567

530

583

567

552

554

308

284

264

248

245

261

288

549 

598

454

472

558

529

596

640

630

596

507

438

567

11,815

594

-58

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

69 

0.2LO 

0.24

540 

1.65

1.84

Calendar year 1955: 

Water year 1955-56;

182 

0.555 

0.64

957 

2.92 

3.37

302 

0.921 

0.99

311 

0.948 

1.09

1,952 

5.95 

6.64

997 

3.04 

3.50

Observed

Max 2,310 Min 45 Mean 480 

Max 3,410 Min 50 Mean 546

523 

1,59 

1.77

348 

1.06 

1.22

57 

0.174 

0.20

356 

1.09 

1.22

Adjusted

Mean 464 Cfsm 1.41 In. 19.22 

Mean 548 Cfsm 1.67 In. 22.72

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Pennesseewassee and Thompson Lakes.
ANDROSCOGGIN RIVER BASIN 63

Androseoggin River near Auburn, Maine

Location.~Lat 44°04'15", long 70°12'35", on right bank li miles downstream from Little 

Androseoggin River and 2 miles downstream from north bridge between Auburn and Lewiston, 

Androseoggin County.

Drainage area. 3,257 sq mi.

Records available, October 1928 to September 1956. October 1928 monthly discharge only, 

published in WSP 1301.

Gage. Water-stage recorder. Datum of gage is 109.18 ft above mean sea level, ditum of 

"1929.

Average discharge. 28 years, 5,997 cfs (adjusted).

Extremes.--Maximum discharge during year, 26,200 cfs May 1 (gage height, 9.51 ft); minimum

rTaj_ ^y 525 C f S D@ C 25 AllP! 19

1928-56: Maximum discharge,'135,000 cfs Mar. 20, 1936 (gage height, 27.57 ft), from 

rating curve extended above 76,000 cfs on basis of slope-area determination of peak 

flow and computation of flow over dam; minimum, 309 cfs Sept. 28, 1941 (gage height, 

0.34 ft); minimum daily, 340 cfs Sept, 28, 1941.

Remarks. Records excellent. Considerable fluctuation caused by powerplants abo^e station. 

Flow regulated by powerplants above station and by Kennebago, Rangeley, Mooselookmeguntic, Richardson, Umbagog. Aziscohos, Auburn, Pennesseewassee and Thompson Lakes, and 

Gulf Island Pond (see p. 64).

Revisions (water years) . WSP 781: 1930, 1933-34. WSP 1301: 1932-36.

Rating table, water year 1955-56 (gage height, In feet, and 

discharge, in cubic feet per second)

0.7 

1.0 

1.5 

2.0 

3.0

500

695

1,100

1,650

3,240

4.0 

6.0 

8.0 

9.4

5,350

11,100

18,900

25,600

Discharge, in .cubic feet per second, water year October 1955 to September 1956

Day

1

2 

3

4

5

6

7

8

9

10

11 

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27 

28

29

30

31

Total

Mean

(t)

Oct.

1,220

600 

3,380

2,930

2,900

2,930 

3,370

1,770

1,480

3,430

2,910 

2,980

2,900

3,180

1,530

580

3,?50~

3,600

3,440

3.840

3,680

1,350

595

3,470

2,900

2,960

3,230 

3,360

1,080

590

3,750

79,195

2,555

-1,481

Nov.

9,920

14.500 

9,020

6,680

6,510

11,200 

8,980

6,910

5,600

5,450

5,080 

4,190

4,200

4,790

4,850

4,660

4,890

4,820

3,370

3,060

4,400

4,760

4,740

1,090

4,400

2,690

760 

3,820

3,280

3,230

161,650

5,388

+175

Dec.

3,220

3,090 

1,450

810

4.040

3,460 

3,270

3,100

2,910

1,430

680 

3,160

2,880

2,860

2,900

2,930

1,390

645

3,230

2,970

2,820

2,360

2,270

1,040

525

625

2,760 

2,560

2,550

2,970

1,150

72,055

2,324

-1,180

Jan.

550 1,750" 

3,180

2,700

2,650

2,590 

1,200

590

5,240

15,300

23.200 

22,400

21,000

21,400

16,600

11,800

9,540

7,780

7,480

5,980

3,750

4,720

5,290

5,200

4,930

4,920

4,560 

2,200

1,630

4,450

4,160

228,740

7,379

+764

Feb.

4,210

4,170 

3,610

1,680

1,230

4,440 

4,130

4,110

4,140

4,160

2,080 

935

4,280

4,150

4,100

4,120

4,100

1,640

890

4,090

4,080

4,130

4,080

3,540

1,540

3,750" 815

4,120

4,140

........

96,460

3,326

-1,132

Mar.

3,630

3,600 

1,980

835

3,875

4,100 

4,080

4,090

4,010

1,510

870 

3,900

4,140

4,180

4,170

4,_:o

2,020

910

3,710

4,150

4,190

4,300

3,800

2,370

1,150

4,130

4.410 

4,360

4,400

3,500

2,400

103,035

3,324

-1,230

Apr.

1.010

3,970 

4,410

4,690

6,220

7,840 

10,600

13,600

11,300

9,540

10,300 

10,900

12,800

14,000

13,900

14,100

18,100

22,200

19,000

16,200

14,700

13,600

13,100

12,000

11,200

10,000

*9,610 

11,500

18,600

24, 500

563,290

12,110

+2,412

May

25.600

21,860 

18,500

19,300

19, 700

19,400 

18,400

16,800

14,100

12,200

11,600 

11,900

11 , 600

16,000

15,800

15,900

14,500

13,100

10,400

9,220

8,180

7,080

6,820

5,920

7,220

6,720

5.640 

13,600

16,700

12,200 

10,100

416,000

13,420

+6,364

June

9,020

9,750 

9,400

12.900

12,566

11,100 

9,540

8,440

7,780

7,430

7,750 

7,220

6,720

6,240

6,310

5,590

4,240

4,080

4,460

4,260

4,100

4,060

1,980

1.450

4,330

4,340

4,480 

4,500

4,260

2, 200

190,430

6,348

-71

July

1,740

3,820 

3,640

2,690

3,650

4,200 

3,820

2,770

4,890

7,180

8,500 

6,470

5,840

5,690

5,960

7,060

5,750

4,860

4,780

4,810

2,870

1,260

4,340

3,950

3,430

3,920

3,820 

1,810

665

3,'BTO

3,430

131,185

4,232

-930

AU£'.

3,450

3,240 

2,970

1,360

600

3,050 

3,150

3,120

3,120

*3,390

1,250 

' 705

,3,570

3, 040

2', 970

2 ,,960

3,010

1,140

625

3.ITO"

3,3.00

3,100

3,130

2, 980

1, 1560

.665

2,690 

3, 100

3,130

3,240 

3.760

80,185

2,587

-1,770

Sept.

4,320

4,610 

1,760

4,690

4,840

4,660 

4,690

3,120

1,010

3,760

3,870 

3,510

3,350

3,260

1,890

795

3,350"

3,890

3,620

4,910

5,190

5,500

3,130

4,870

4,660

5.750

5,180 

4,830

3,530

3,020

115,735

3,858

-848

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

1,074 

0.330 

0.38

5,563 

1.71 

1.91

Calendar year 1955: 

Water year 1955-56:

1,144 

0.351 

0.40

8,143 

2.50 

2.88

2,194 

0.674 

0.73

2,094 

0.643 

0.74

14,520 

4.46 

4.98

19,780 

6.07 

7.00

Observed

Max 30,700 Min 505 Mean 5,935 

Max 25,600 Min 525 Mean 5,568

6,277 

1.93 

2.15

3.302

i.Ol 

1.16

817 

0.251 

0.29

3,010 

0.924 

1.03

Adjusted

Mean 5,448 Cfsm 1.67 In. 22.70 

Mean 5,661 Cfsm 1.74 In. 23.65

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Kennebago, Rangeley, Moosslookmeguntic, Richardson, Umbagog, Aziscohos, Auburn, Pennesseewassee, and Thompson Lakes and Gilf Island 

Pond.
64 ANDROSCOGGIN RIVER BASIN

Reservoirs in Andr-oscoggin River Basin, Maine

Kennebago Lake on Kennebago River, at Kennebago, used for- power, has usable capacity of

 721,000,000 cu ft between elevations 1,773.0 and 1,780.5 ft above mean sea level, unadjusted. Gage-height record furnished by Union Water Power Co.

Rangeley Lake on Rangeley Stream, at Oquossoc, used for power and log driving, has usable 

capacity of 1,339,200,000 cu ft in top 4 ft of lake (top of flashboards). Gage-height 

record furnished by Union Water Power Co.

Mooselookmeguntic Lake at Upper Dam, in Richardson Township, used for power and log driving, 

has usable capacity of 8,370,000 cu ft between gage heights 8.3 and 20.5 ft. Gageheight record furnished by Union Water- Power Co.

Upper and Lower Richardson Lakes on Rapid River, at Middle Dam, used for power and log

driving, has usable capacity of 5,691,500,000 cu ft between gage heights 3.0 and 20.5 ft. 

Gage-height record furnished by Union Water Power Co.

Umbagog Lake on Androscoggin River, at Er-rol Dam, three-quarters of a mile northeast of 

Errol, N. H., used for power and log driving, has .usable capacity of 3,080,160,000 cu ft 

between gage heights 5.5 and 15.0 ft. Gage-height record furnished bv Union Water Power 

Co.

Aziscohos Lake on Magalloway River, in Lincoln Township, 3 miles east of village of Wilsons

 Mills, completed in 1911 for power, has usable capacity of 9,593,000,000 cu ft between 

elevations 1,490.0 and 1,535.0 ft. Elevation record furnished by Union Water Power Co.

Gulf Island Pond on Androscoggin River 3 miles upstream from Lewiston, completed in 1928

 for power, has capacity of 1,100,000,000 cu ft in top 10 ft of pond below elevation 

262 ft. Elevation record furnished by Central Maine Power Co.

Lake Auburn on outlet stream to Androscoggin River, at East Auburn, used for storing water 

supply of Auburn and Lewiston, has usable capacity 580,000,000 cu ft between elevations 

254.7 and 260.7 ft. Elevation record furnished by Auburn Water District.

Pennesseewassee Lake on short outlet stream to Little Androscoggin River, at Norway, used 

for power, has usable capacity of 198,000,000 cu ft between gage heights 95.0 and 100.0 

ft. Gage-height record furnished by Central Maine Power Co.

Thompson Lake on short outlet stream to Little Androscoggin River, at Oxford, used for _ 

power, has usable capacity of 950,000,000 cu ft between gage heights 95.0 and 100.0 ft. 

Gage-height record furnished by Robinson Manufacturing Co.

Month-end contents, in millions of cubic feet, water year October 1955 to September 1956

Date

Sept. 30.. ...............

Date

Sept. 30. ................

Kennebago 

Lake

4»0

Asiscohos 

Lake

6,590

Rangeley 

Lake

1 145

991

Oulf Island 

Pond

2 187

2 304

2,487

Mooselookmeguntic 

Lake

4,402

Lake 

Auburn

364

Upper and Lower 

Richardson Lakes

512

3,806

Pennesseewassee 

Lake

93

Umbagog 

Lake

1,722

1 958

1,958

Thompson 

Lake

1 725

1,647
ROYAL RIVER BASIN 65

Royal River at Yarmouth, Maine

Location. Lat 43°47'55", long 70°10'45", on right bank 150 ft upstream from lower highway bridge, in Yarmouth, Cumberland County.

Drainage area. 142 sq mi.

Records available. October 1949 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 10 ft {from topographic map).

Average discharge. 7 years, 311 cfs.

Extremes. Maximum discharge during year, 2,790 cfs Apr. 17 (gage height, 4.37 ft); maximum gage height. 4.47 ft Jan. 11 (ice jam); minimum discharge, 30 cfs Aug. 18 (gage 

height, 1.05 ft).

1949-56: Maximum discharge, 7,960 cfs Sept. 12, 1954 (gage height, 7.12 ft); minimum, 4.4 cfs Oct. 17, 18, 1952 (gage height, 0.71 ft); minimum gage height, 0.64 ft 

Aug. 23, 24, 1950.

Remarks. Records excellent except those for periods of ice effect or backwater from 

debris, which are fair. Some diurnal fluctuation at low flow caused by mill above 

station.

Rating table, water year 1955-56, except periods of Ice or backwater from 

debris (gage height, In feet, and discharge, In cubic feet per second)

1.0

1.1 

1.3 

1.6 

2.0

92

196

385

2.5 

3.0

4.0 

4.3

705

1,140

2,290

2,690

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Oct.

45

45

42

37

56

36

78

110

78

58

37

*36

55

42

47

53

64

128

95

68

41

49

53

53

53

53

55

55

53

53 

355

2,063

66.5

0.468

0.54

Nov.

1,170

1,250

555

330

1,110

1,220

710

4O8

304

240

249

343

299

249

227

200

343

354

258

205

171

148

130

152

155

141

114

124

117

95

11,351

378

2.66

2.97

Dec.

103

87

85

90

95

103

92

90

87

82

78

73

70

68

68

75

75

73

70

73

73

73

70

70

70

68

66

62

55

49

1Z

2,340

75.5

0.532

0.61

Jan.

47

45

45

45

45

47

49

58

650

1,810

2,460

2,290

2,550

2,290

1,440

977

705

492

385

310

255

220

196

184

156

144

128

118

106

106 

102

18,455

595

4.19

4.83

Feb.

98

95

92

92

92

92

95

95

95

95

95

95

95

95

*95

95

95

95

95

95

95

95

90

9Z

110

114

114

98

95

 -

2,794

96.3

0.678

0.73

Mar.

~92 92

95

112

118

118

118

118

118

118

120

130

144

144

140

130

124

120

*118

120

120

120

120

128

128

124

120

120

124

128 

138

3,759

121

0.852

0.98

Apr.

144

180

227

285

590

,140

,540

,560

,170

,160

,430

,660

,850

,860

,690

,940

,650

,300

1,540

1,120

923

812

772

*780

804

642

557

596

742

977

33,641

1,121

7.89

8.80

May

860

576

492

486

467

408

343

295

254

254

258

227

209

200

192

184

184

171

159

155

144

138

138

144

134

124

325

905

53T:

323 

244

9,524

307

2.16

2.49

June

205

227

262

461

402

295

218

176

148

144

*138

130

117

109

100

92

92

78

66

73

70

75

73

70 '73

80

73

70

70

66

4,253

142

1.00

1.12

July

64

62

60

55

53

62

98

98

98

117

85

70

64

85

114

92

Ho" 128

80

66

58

58

62

64

60

55

49

45

42 

12

42

2,238

72.2

0.508

0.59

Aug.

41

41

41

41

37

37

*36

36

36

36

39

39

37

36

34

31

31

31

33

33

31

36

42

41

39

39

34

34

33 

33

45.

1,133

36.5

0.257

C.30

Sept.

82

73

78

64

51

44

42

44

42

39

37

36

36

41

62

62

66

114

82

64

95

82

64

114

196

124

90

73

62 

53

2,112

70.4

0.496

0.55

Calendar year 1955: Max 1,230 Min 31 Mean 225 Cfsm 1.58 In. 21.51

Water year 1955-56: Max 2,650 Mln 31 Mean 256 Cfsm 1.80 In. 24.51

Peak discharge (base 1,500 efs).--Jan. 13 (12 p.m.) 2,660 cfs (4.28 ft); Apr. 8 (2 a.m.) 1,680 cfs 

(3.48 ft); Apr 7 17 (8 p.m.) 2,790 cfs (4.37 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Dec. 7, Dec. 21 to Jan. 13, Jan. 19 to Mar. 31. 

Backwater from debris on control Oct. 1-31, July 15 to Sept. 30.
66 PRESUMPSCOT RIVER BASIN

Presumpscot River at outlet of Sebago Lake, Maine

Location. Lat 43°49'05", long 70 027'00", at dam of hydroelectric plant at Eel Weir Palls, 

1 mile downstream from lake outlet, Cumberland County.

Drainage area. 436 sq mi.

Records available. January 1887 to September 1956.

Gage. Float gages in forebay and tailrace of hydroelectric plant at Eel Weir Palls and 

staff gages at dam on outlet of Sebago Lake.

Average discharge. 69 years, 665 cfs (unadjusted).

Remarks. Discharge computed- from Alien meter records for each of three pairs of water 

wheels and from records of openings of two regulating gates at Eel Weir hydroelectric 

plant. Water wasted at rare intervals through gates in dam on outlet of Sebago Lake; 

flow computed from records of gate openings. Water diverted by Portland Water District and leakage through dam, totaling about'35 cfs, not included in figures of daily 

discharge. Plow completely regulated by Crystal, Highland, Long and Pleasant Lakes, 

Brandy, Thomas and Panther Ponds, Sebago Lake (surface area, 45.6 sq mi), and by 

several smaller ponds, which have a combined usable capacity of 13,535,000,000 cu ft.

Cooperation. Records furnished by S. D. Warren Co.

Revisions 

runoff

(water years). WSP 261:- Drainage area. WSP 1301: 1920-50 (adjusted monthly 

in inches).

Discharge, In cubic feet per second, water year October 1955 to Septe-nber 1956

Day

1

2

3

4

5

6

7

8 

9

1O

11

12

13

14

15

16

17

18

19 

20

21

22

23

24

25

26

27

28 29

3O 

31

Itotal

Mean

(t)

Oct.

657

662

656

653

657

650

651

651

647

649

651

650

649

646

649

643

619

554

573 

638

641

641

642

641

640

644

639

642

639

19,776

638

-416

Nov.

522

497

536

538

4S9

503

763

546 

593

544

6O6

586

542

558

568

534

536

538

586 

539

661

672

673

672

568

674

756

794

799 

726

18,119

604

+82

Dec.

597

536

602

573

562

538

554

532 

534

534

565

534

534

534

535

533

534

536

534

528

519

519

519

376

0

379

53J

526

533 

535

534

15,900

513

-480

Jan.

529

558

529

412

338

338

336

336 

248

100

106

137

180

143

169

198

256

294

427 

385

407

389

378

452

481

528

522

503

504

503 

503

11,159

360

+1,142

Feb.

50O

477

530

506

497

552

658

657 

674

664

675

648

673

673

675

674

660

674

651 

659

653

649

657

655

653

650

658

655

655

18,262

630

-25

Mar.

649

610

643

642

642

652

663

648

652

647

640

641

641

647

645

638

640

652

650 

653

657

645

651

650

650

653

656

650

637

631

652

20,027

646

-13

Apr.

626

643

656

539

527

297

263

293

465

439

344

382

346

368

362

313

394

361

366 

389

422

344

350

379

407

460

466

461

413 

434

12,538

418

+1,891

May

516

500

536

595

523

588

869

930 

923

825

704

673

634

666

664

664

666

651

670 

673

665

667

666

681

662

664

590

526

666

666 

665

20,588

664

+662

June

668

654

629

736

786

806

820

773 

726

634

637

653

647

616

646

631

651

636

642 

630

648

678

661

634

629

631

637

617

649

632

20,037

668

-149

July

118

0

113

232

764

753

756

789 

730

808

779

659

673

647

64O

635

685

828

829 

771

723

728

728

731

698

752

786

778

742 

756

764

20,395

658

-419

Aug.

760

763

761

764

761

762

763

773 

782

782

782

782

782

783

779

780

781

788

785 

784

783

784

783

783

779

781

780

760

775

776

1 tic

24 , 063

776

-248

Sept.

774

0

195

783

781

781

782

78O 

780

780

779

778

778

777

777

771

776

781

770 

776

774

778

776

777

776

777

775

773

826 m

22,002

733

-998

Adjusted for change In reservoir contents and diversion

Mean 

Cf sm 

In.

222 

0.509 

0.59

686 

1.57 

1.75

Calendar year 1955: 

Water year 1955-56:

33 

0.076 

0.09

1,502 

3.44 

3.97

605 

1.39 

1.50

633 

1.45 

1.67

2,309 

5.30 

5.91

1,326 

3.04 

3.50

Observed

Max 1,570 Mln 0 Mean 798 

Max 930 Mln 0 Mean 609

519 

1.19 

1.33

239 

0.548 

0.63

528 

1.21 

1.40

-265 

-0.608 

-0.68

Adjusted

Mean 549 Cfsu 1.26 In. 17. 08 

Mean 694 Cfs-n 1.59 In. 21.66

t Change In contents, equivalent In cubic feet per second, In Sebago and other lakes upstream and 

diversion by Portland Water District.

Note. Negative figures of adjusted discharge and runoff Indicate that evaporation and seepage 

from reservoirs exceeded Inflow.
SACO RIVER BASIN 67

Saco River near Conway, N. H.

Location. Lat 43°59'25", long 71°05'30", on left bank at Odell Falls, if miles downstream 

from Swift River and Conway, Carroll County.

Drainage -area. 386 sq mi.

Records available.--August 1903 to December 1909, January 1910 to June 1912 (gage heights 

only), February 1929 to September 1956.

Gage. Water-stage recorder. Datum of gage is 418.19 ft above mean sea level, datum of 

1929. Aug. 26, 1903, to June 30, 1912, chain gage at site three-quarters of a mile 

downstream at different datum.

Average discharge. 33 years (1903-9, 1929-56), 933 cfs.

Extremes. Maximum discharge during year, 10,100 cfs Jan. 10 (gage height, 8.57 ft); mlnlmum daily, 95 cfs Jan. 1-4.

1903-9, 1929-56: Maximum discharge, 43,900 cfs Mar. 27, 1953 (gage height, 17.20 ft), 

from rating curve extended above 11,000 cfs on basis of slope-area determination of 

peak flow; minimum, 40 cfs Mar. 16, 1932 (gage height, 1.61 ft).

Remarks. Records excellent except those for periods of ice effect or no gage-height record, which are fair.

Revisions (water years). WSP 756: Drainage area. WSP 1301: 1908-9.

Rating table, water year 1955-56, except periods of Ice effect (gage 

height. In feet, and discharge, In cubic feet per second)'

2.0

2.1 

2.3 

2.5 

3.0

115

165

228

420

3.5 

4.0 

5.0 

6.0

7.7

685

1,050

2,200

3,840

7,690

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4 

5

6

7

8

9

10

11

12

13

14 

15

16

17 

18

19

20

21 

22

23

24 

25

26

27

28 

29 

30

31

Total

Mean

Cfsm

In.

Oct.

212

218

186

168 

160

155

525

637

407

317

269

235

225

205 

285

496

710 

1,250

698

558

501 

438

411

376 

394

402

368

356 

352 

352

2.000

13,866

447

1.16

1.34

Nov.

5.590 

2,170

1,360

1,090 

2,770

2,420

1,620

1,280

1,100

954

862

834

792

744 

730

685

744 

883

692

625

569 

530

480

460 

420

395

370

345 

325 

505

30,144

1,005

2.60

2.90

Dec.

F?0" 285 

250

230 

220

210

200

190

178

170

160

152

148

142 

138

130

126 

122

120

116

112 

110

110

108 

106

104

102

102 

100 

99

97_

4,707

152

0.394

0.45

Jan.

95 95-

95

95 

97

97

102

110

1,050

7 f 170

5,670

4,200

6,120

3,700 

2,460

1,860

1,500 

*1,220

1,030

920

820 

765

700

660 

620

580

540

510 

480 

460

440

44,261

1,428

3.70

4.27

Feb.

Iff

400

390 

380

370

360

355

350

340

335

330

320

310 

305

300

290 

290

280

280

270 

265

260

255 

250

250

250

250 

250

9,130

315

0.816

0.88

Mar.

245

240

235

240 

250

235

220

205

190

190

196

205

220

220 

220

200

180 

174

215

270

»310

355

310

300 

285

275

270

260 

260 

255

255

7,430

240

0.622

0.72

Apr.

255 

260

270

290 

335

440

600

780

860

880

900

960

1,040

1,300 

1,510

1,650

1,980 

2,000

2,000

1,940

1,880 

1,780

1,640

1,530 

*1,450

1,370

1,270

2,190 

5,080

7,620

46,060

1,535

3.98

4.44

May

5,120 

3,620

3,970

3,900 

3,840

3,440

3,270

2,750

2,230

2,690

2,880

2,830

4,900

4,370 

3,160

2,740

2,370 

1,810

1,520

1,440

1,300 

1,240

1,690

1,690 

1,120

970

1,536"

4,560 

2,310

1, 800

1,860

83,350

2,689

6.97

8.04

June

1,720 

1,440

3,350

4.580 

2,660

1,900

1,520

1,250

1,130

1,090

1,100

938

813

750 

661

597

548 

491

438

420

411 

420

380

420

537

466

402

466 

416

376

31,470

1,049

2.72

3.04

July

552 

528

309

291

269

325

553

553

1,880

2,950

1,160

785

698

4.190 

2, 490

1,570

1,170 

930

750

643

580 

586

597

631 

542

481

434

402 

368

348 

340

27,505

887

2.30

2.65

Aug.

323 

303

30?

280

291

281

263

262

26'5

26'3

356

557

262

245 

22fl

212

*212 

221

221

228

218 

221

215

215 

252

225

198

195 

186 19E"

34f

7,816

252

0.653

0.75

Sept.

1,160 

650

870

521 

589

540

1,110

649

466

380

356

521

502

3"44" 280 

328

660 

1,330

718

865

1,320 

799

649

1,700 

1,560

1,030

820

724 

637

575

21,833

728

1.89

2.11

Calendar year 1955: Max 6,880 Mln 97 Mean 794 Cfsm 2 ;06 In. 27.90

Water year 1955-56: Max 7,620 Mln 95 Mean 895 Cfsm 2.32 In. 31.59

Peak discharge (base. 8.700 cfs).--Jan. 10 (4 p.m.) 10,100 cfs (8.57 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 22 to Jan. 10, Jan. 20 to Mar. 24 (no gagehelght record Feb. 17 to Mar. 21; discharge computed on basis of recorded range In stage, weather 

records, and comparison with records at nearby stations). No gage-height record Mar. 25 to Apr. 27; 

discharge estimated on basis of weather records and records at nearby stations.
SACO RIVER BASIN

Osslpee River at Effingham Palls, N. H.

Location. Lat 43 0 47'40'', long 71°03'40", on left bank 0.3 mile upstream from highway 

bridge at Effingham Palls, Carroll County, 0.35 mile downstream from outlet of Ossipee 

Lake, and 4 miles northwest of Effingham.

Drainage area.--330 sq mi.

Records available. September 1942 to September 1956

Gage. Water-stage recorder. Altitude of gage is 390 ft (from topographic map).

Average discharge. 14 years, 744 cfs.

Extremes. Maximum discharge during year, about 3,550 cfs May 2; minimum, 12 cfs Oct. 3; 

minimum daily, 180 cfs Oct. 2.

1942-56: Maximum discharge, 11,700 cfs Mar. 28, 1953 (gage height, 11.64 ft); minimum, 10 cfs Oct. 9, 10, 1944; minimum daily, 11 cfs Oct. 10, 1944.

Remarks. Records excellent except those for periods of no gage-height record, which are 

good. Plow regulated by Ossipee and Silver Lakes and Pine River Pond (combined 

capacity, 1,430,000,000 cu ft).

Rating table, water year 1955-56 (gage i^-tght, In feet, and discharge, 

in cubic feet per second)

2.0 

2.5 

3.0 

4.0

160

266

420

840

5.0 

6.0 

7.0 

8.0

1,380

2,070

2,950

4,130

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2 

3

4

5

6

7 

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf sm

In.

Oct.

259

180 

191

292

289

287

287 

292

295

298

298

298

298

295

295

295

301

309

318

324

327

327

321

315

315

315

315

318

318

321

54?

9,442

305

-

-

Nov.

920

1,120 

1,120

1,120

1,150

1,230

1,270 

1,260

1,220

, 1,180

1,060

831

965

920

80S

804

808

804

795

786

786

*777

624

491

491

495

495

495

491

487

25,803

860

-

-

Dec.

483

483 

487

483

483

479

475 

475

471

467

467

459

455

452

448

444

441

438

430

427

424

416

413

406

402

396

385

378

368

359

346

13,540

437

-

-

Jan.

330

309 

292

276

261

249

242 

252

315

454

1,460

2,580

3,070

5,590

3,340

3,070

2,750

2,440

al,900

al,400

al,200

a880

a840

a820

804

795

786

786

777

772

768

37,608

1,213

-

-

Feb.

759

750 

746

736

728

718

714 

764

950

9T5

880

850

818

782

750

714

669

638

607

579

547

511

475

444

444

459

434

430

427

19,238

663

-

-

Mar.

410

402 

*406

420

424

416

424 

438

441

4T3

410

410

399

402

406

392

396

388

378

375

368

362

362

362

362

355

352

343

336

343 

349

12,044

389

-

-

Apr.

343

336 

*346

378

444

555

682 

786

895

950

985

1,040

1,140

1,270

1,420

1,590

1,880

2,340

2,630

2,650

2,600

2,540

2,490

2,420

2,280

2,130

1,990

1,870

2,170

2? 860

46,010

1,534

-

May

3,430

a5,520 

3,420

3,260

3,130

2,940

2,720 

2,410

2,010

1,900

*1,800

1,360

1,300

1,310

1,310

1,250

1,000

870

961

1,280

1,240

985

840

836

745

523

531

957

1,450 

1,460

1,430

52,178

1,683

-

-

June

1,360

1,270 

1,150

1,290

1,450

1,460

*1,430 

1,340

1,240

1,120

945

563

563

563

563

563

413

336

336

336

333

333

333

333

336

336

336

333

333 

333

21,630

721

-

July

333

333 

330

330

330

330

330 

330

333

355

613

808

826

855

1,010

1,280

1,250

1,170

*1,010

960

736

454

306

309

312

393

559

591

587 

495

289

18,147

585

-

"

Aug.

289

287 

287

287

287

284

284 

282

279

279

276

274

274

271

269

266

266

264

261

259

256

*254

254

252

249

249

247

244

242 

242

242

8,256

266

-

-

Sept.

242

242 

244

244

242

242

242 

242

242

242

242

240

240

238

238

235

235

238

242

244

247

254

254

261

269

274

276

337

511 

5TT

8,010

267

-

-

Calendar year 1955: Max 2,670 Mln 117 Mean 67O Cfsm 2.03 In. 27.56

Water year 1955-56: Max 3,520 Mln 180 Mean 743 Cfsm 2.25 In. 30.64

* Discharge measurement made on this day. 

a No gage-height record; discharge estimated 

River at Cornish, Maine.

basis of weather records and records for Ossipee
SACO RIVER BASIN 69

Ossipee River at Cornish, Maine

Location. Lat 43°48'25", long 70°47'55", on left bank Just downstream from highway bridge 

bridge in Cornish, York County, If- miles upstream from mouth.

Drainage area. 453 sq mi.

Records available. July 1916 to September 1956.

Gage. Water-stage recorder. Datum of gage is 276.1 ft above mean sea level, datum of 

1929. Prior to Aug. 21, 1929, chain gage and Aug. 21, 1929 to Sept. 30, 1942, waterstage recorder, at same site at datum 1 ft higher than present datum.

Average discharge,--40 years, 882 cfs.

Extremes. Maximum discharge during year, 4,620 cfs Jan. 14 (gage height, 7.35 f';); maximum gage height, 7.85 ft Jan. 13 (backwater from ice); minimum discharge, 51 cfs Oct. 4 

(gage height, 0.79 ft); minimum daily discharge, 194 cfs Oct. 3.

1916-56: Maximum discharge, 17,200 cfs Mar. 21, 1936 (gage height, 16.32 ft, present 

datum), from rating curve extended above 7,500 cfs; minimum, 25 cfs Oct. 23, 1947 (gage 

height, 0.60 ft).

Remarks.--Records excellent except those for periods of ice effect, which are fair. Plow 

partly regulated by powerplants at Kezar Palls and by Ossipee and Silver Lakes, Pine 

River, Bickford and Colcord Ponds (combined capacity, 1,600,000,000 cu ft).

Revisions (water years1.--WSP 756: Drainage area. WSP 1301: 1917-29(M).

Rating table, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

1.5 

2.0 

3.0 

4.0

182

338

810

1,430

5.0 

6.0 

7.2

2,190

3,100

4,440

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

280

273

194

260

304

300 

390

378

354

354

338

346

338

338

346

354

403

478

419

403

403

382

382

382

378

403

403

382

378

382

570

11,295

364

-

-

Nov.

1,100

1,330

1,260

1,220

1,370

1,440 

1,420

1,370

1,340

1,280

1,240

1,100

909

1,100

944

887

920

920

870

865

860

843

821

628

590

555

540

530

520

5Z0

29,292

976

_

-

Dec.

'520" 520

515

510

505

505 

505

505

500

500

500

495

495

490

490

485

485

480

480

475

470

465

460

455

455

450

440

430

425

415

405

14,830

478

-

-

Jan.

400

385

375

360

350

340 

335

390

575

1,430

2,280

3,250

3,980

4,420

4,000

3,570

*3,140

2,760

2,250

1,490

1,360

1,050

1,020

1,000

980

960

940

920

900

885

870

46,965

1,515

_

-

Feb.

865

855

850

840

830

820 

825

865

940

1,000

980

970

930

905

875

840

810

775

745

670

660

650

630

620

600

620

600

550

530

22,650

781

_

-

Mar.

525

515

505

510

530

550 

515

510

515

540

525

500

495

510

530

520

485

485

490

*515

525

525

485

470

460

455

455

450

435

4T5

450

15,425

498

_

-

Apr.

450

460

482

527

690

882 

1,110

1,250

1,250

1,280

1,360

1,460

1,630

1,800

1,960

2,270

2,830

3,210

3,410

3,270

3,200

3,140

3,030

*2,860

2,690

2,560

2,440

2,350

2,800

3,480

60,131

2,004

_

-

May

3,860

3,950

3,800

3,620

3,470

3,280 

3,020

2,760

2,340

2,100

1,970

1,660

1,460

1,440

1,480

1,430

1,340

1,100

1,040

1,170

1,350

1,300

1,030

980

962

821

711

1,220

1,560

1,630

1,580

59,434

1,917

_

-

June

1,520

1,440

1,320

1,370

1,550

1,570 

1 , 540

1,450

1,350

1,240

1,180

755

695

695

653

653

628

487

448

444

436

457

432

432

482

470

444

478

457

453

25,529

851

_

-

July

436

427

419

411

411

440 

461

495

545

555

550

854

860

986

1,000

1,210

1,320

1,240

1,100

998

887

695

504

550

491

427

527

593

618

588

465

21,063

679

_

-

Aug.

342

342

323

327

323

338 

327

315

319

315

319

293

319

308

?97

300

297

£83

283

308

£97

300

297

290

280

260

757

276

269

276

300

9,420

304

_

-

Sept.

311

300

382

366

311

300 

304

293

293

300

283

276

286

276

276

269

311

342

300

304

342

319

290

423

432

358

350

354

461

541

9,953

332

_

-

Calendar year 1955: Max 2,950 Mln 136 Mean 807 Cfsm - In. -

Water year 1955-56: Max 4,420 Mln 194 Mean 891 Cfsm - In. -

Discharge measurement made on this day. 

Note.--Stage-discharge relation affected by Ice Nov. 25 to Jan. 13, Jan. 22 to Apr. 2.
70 SACO RIVER BASIN

Saoo River at Cornish, Maine

Location. Lat 43°48'30", long 70°46'55", on left bank just upstream from highway bridge at 

Cornish, York County, half a mile downstream from Ossipee River.

Drainage area. 1,298 sq mi.

Records available. June 1916 to September 1956.

Gage. Water-stage recorder. Datum of gage is 263.48 ft above mean S3a level, datum of 

1929. Prior to Oct. 30, 1919, chain gage on bridge just downstream at different datum.

Average discharge. 40 years, 2,715 cfs.

Extremes. Maximum discharge during year, 11,600 cfs Jan. 16 (gage height, 8.94 ft); maximum gage height. 14.17 ft Jan. 13 (ice jam); minimum discharge, 310 cfs Oct. 4 (gage 

height, 1.72 ft).

1916-56: Maximum discharge, 45,000 cfs Mar. 21, 22, 1936 (gage height, 21.90 ft, 

from floodmarks); minimum, 90 cfs Oct. 1, 1921 (gage height, 0.03 ft).

Remarks.--Records excellent except those for periods of ice effect, which are fair. Flow 

partly regulated by powerplants above station and by Ossipee, Silver, Conway, and Kezar 

Lakes, and Moose, Hancock, Pine River, Bickford and Colcord Ponds (combined capacity, 

3,400,000,000 cu ft).

Revisions (water years). WSP 1301: 1917-18(M), 1936(M).

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Jan. 13 Jan. 14 to Sept. 30

2.2 440

2.5 578

3.0 860

4.0 1,800

5.0 3,230

7.0 7,000

8.4 10,300

2.1 455

2.5 656

3.0 973

4.0 1,930

5.O 3,240

7.0 7,OOO

8.F 11,500

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18 

19

20

21

22

23 

24

25

26

27 

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

528 

496 

488

444

538

533

662

786

835

873

823

810

792

786

679

630

829 

1,170 

1,430

1,430

1,350

1,310

1,230 

1,170

1,110

1,090

1,090 

1,060

1,020

978 

1,310

28,280

912

-

-

Nov.

2,700 

3,690 

3,680

3,680

4,060

4,320

4,410

4,500

4,440

4,280

4,120

3,810

3,500

3,520

3,180

3,040

2,840 

2,800 

2,760

2,680

2,540

2,460

2,330 

2,040

1,840

1,810

1,680 

1,580

1,450

1,350

91,090

3,036

-

-

Dec.

,340 

,350 

,320

,290

,270

,240

,210

,200

,170

,150

,140

,130

,120

,110

,120

1,100

1,080 

1,060 

1,060

1,050

1,040

1,040

1,030 

1,020

985

970

955 

950

930

910

 

34,230

1,104

-

-

Jan.

860 

850 

835

815

790

775

765

860

1,700

3,870

4,950

6,900

10,300

10,900

11,000

11,500

* 11, 100 

10,100 

8,610

6,810

5,890

4,970

4,410 

3,820

3,450

3,240

3,090 

2,940

2,710

2,520

'

143,710

4,636

.

-

Feb.

2,290 

2,220 

2,190

2,170

2,160

2,180

2,340

2,360

2.420

2,520

2,500

2,420

2,360

2,270

2,230

2,170

2,110 

2,050 

1,980

1,930

1,840

1,760

1,710 

1,690

1,700

1,710

1,620 

1,550

1,520

59,970

2,068

_

-

Mar.

1,490 

1,450 

1,430

1,440

1,5OO

,570

,500

,420

,370

,360

,370

,500

,540

,580

,590

1,430

1,310 

1,220 

1,230

1,270

1,370

1,490

1,620 

1,610

1,600

1,580

1,560 

1,540

1,500

1,480

1,460

45,380

1,464

_

-

Apr.

1,450 

1,440 

1,470

1,580

2,050

2,550

3,210

3,530

3,630

3,730

3,890

4,180

4,550

5,100

5,340

6,010

7,110 

7,760 

8,180

8,300

8,370

8,350

8,200 

*7,950

7,620

7,200

6,830 

6,600

7,130

8,200

161,510

5,384

-

-

May

8,960 

9,670 

10,500

10,7OO

10,700

1O,3 00

9,840

9,280

8,470

7,780

7,150

6,480

6,100

5,890

5,910

6,030

6,010 

5,620 

5,400

5,320

5,010

4,570

4,020 

3,810

3,690

5,090

3,440 

4,180

4,660

4,860

4,930

202,370

6,528

-

-

June

4,870 

4,720 

4,500

4,500

4,820

5,040

5,100

5,030

4,760

4,390

4,090

3,470

3,210

3,020

2,650

2,540

2,330 

1,980 

1,830

1,740

1,510

1,490

1,380 

1,270

1,450

1,380

1.260 

1,370

1,330

1,310

88,340

2,945

-

-

July

1,250 

1,240 

1,160

1,080

1,050

1,070

1,130

1,210

1,440

1,890

2,510

2,840

2,820

3,050

3,300

3,900

ffl

3,810

3,470

3,060

2,650

2,340 

2,180

2,060

1,900

1,910 

1,820

1,730

1,600

1,270

69,110

2,229

_

-

Aug.

1,160 

1,110 

1,030

981

898

936

913

*898

794

819

741

718

747

764

718

701

690 

684 

613

690

613

613

602 

613

491

515

678 

656

651

576 

592

23,205

749

-

-

Sept.

690 

725 

1,150

1,250

1,200

1,120

1,110

1,170

1,300

1,310

1,220

1,130

1,070

981

910

913

943 

1,070 

1,350

1,490

1,570

1,750

1,790 

2,000

2,090

2,270

2,570 

2,290

2,290

2,250

42,772

1,426

-

-

Calendar year 1955: Max 10,900 Min 310 Mean 2,427 Cfsm - In.

Water year 1955-56: Max 11,500 Min 444 Mean 2,712 Cfsm - In. -

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 27 to Jan. 14, Jan. 25 to Apr. 4.
SACO RIVER BASIN 71

Little Ossipee River near South Limington, Maine

Location. Lat 43°41'15", long 70°40'05", on right bank Just upstream from higtx-ray bridge, 

2 miles southeast of South Limington, York County, and-4 miles upstream from mouth.

Drainage area.--161 sq mi.

Records available. August 1940 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 260 ft (from topographic map).

Average discharge. 16 years, 299 cfs.

Extremes. Maximum discharge during year, 2,400 cfs Jan. 11 (gage height, 5.00 ft); minimum, 

25 cfs May 24 (gage height, 1.56 ft).

1940-56: Maximum discharge, 5,300 cfs May 10, 1954; minimum, 4.7 cfs Nov. 7, 1953 

(gage height, 1.23 ft).

Maximum discharge known, 8,530 cfs Mar. 19, 1936 at "Ledgemere" dam 4 miles upstream.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. Flow regulated by Little Ossipee Lake, Ledgemere and Balch Ponds (combined capacity, 581,000,000 cu ft).

Rating table, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

1.5

1.6 

1.8 

2.0 

2.5

58 

1O4 

269

3.0 

3.5 

4.0 

4.5 

5.0

509

835

1,260

1,770

2,400

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

2O

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Of sm

In.

Oct.

141

141

141

141

141

141

144

147

147

147

147

147

147

121

104

144

135

138

132

144

144

146

146

148

148

150

150

150

152

154

178

4,456

144

_-

Nov.

21O

225

235

350

52O

580

59O

580" 600

3OO

230

240

250

260

370

490

49O

500

490

480

350

270

270

27O

180

ISO

144

20T5

230

230

10,284

343

_

-

Dec.

231

227

224

224

224

224

224

220

220

220

216

216

216

213

213

209

209

2O6

206

b2OO

b2OO

b200

b2OO

195

192

b!82

b!78

b!76

b!70

162

bigg

6,357

205

_

-

Jan.

b!56

b!52

147

138

129

150

162

175

220

4O5

1,970

2,220

1,960

1,880

1,660

1,380

»1,110

888

b655

505

224

b225

231

b235

b240

242

242

b240

b245

246

246

18,678

603

_-

Feb.

b245

b245

b245

b245

246

242

239

23?

239

277

365

365

365

b360

350

b335

b330

b330

b330

b325

b31O

b300

b3OO

b295

298

b290

b285

281

b275

8,551

295

_

-

Mar.

b265

258

250

250

b250

b250

246

242

b245

b24O

b23O

227

227

224

235

b220

206

b225

b215

b215

b215

216

220

b225

b225

b220

b215

b215

206

202 

252

7,081

228

_

-

Apr.

202

WZ

216

235

269

302

419

748

762

714

721

784

926

1,090

1,230

1,390

1,820

2,240

2,110

1,780

1,590

1,470

1,400

*1,27O

1,150

1,040

942

934

1,060

1,220

30,236

1,008

_

-

May

1,24O

1,07O

910

842

806

741

654

628

485

294

294

294

294

294

294

294

290

240

141

141

138

94

28

32

142

195

260

700

780

616

544

13,775

444

_

-

June

455

419

403

434

4O8

360

324

269

231

227

*224

182

141

147

172

195

216

192

169

ISO

153

156

159

162

169

172

165

159

147

144

6,904

230

_

-

July

141

138

135

132

82

77

77

82

132

153

138

129

124

132

162

169

169

162

153

141

138

132

132

135

135

132

126

124

121

118

86

4,007

129

_

-

A l?.

64

62

62

62

60

60

*60

58

58

58

58

58

58

58

56

58

53

52

52

52

52

52

52

52

52

50

50

50

50

50

50

1,719

>« 55 . 5

_

-

Sept.

50- SO

55

116

195

195

202

199

195

195

195

195

195

199

195

195

199

199

195

195

195

195

195

206

'ST36

202

2O2

2O2

202

202

5,421

181

_

-

Calendar year 1955: Max 872 Mln 22 Mean 286 Cfsm - In. -

Water year 1955-56: Max 2,240 Mln 28 Mean 321 Cfsm - In. -

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.

Note. No gage-height record Oct. 22 to Nov. 30; discharge estimated on basis of recorded range In 

stage, records at dam upstream and precipitation records.
72 MOUSAM RIVER BASIN

Mousam River near West Kennebunk, Maine

Location. Lat 43°25'05", long 70°39'35", on right bank 100 ft upstream from highway

bridge, li miles downstream from Middle Branch, and 4 miles west of West Kennebunk, York 

County.

Drainage area. 105 sq mi.

Records available.--October 1939 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 170 ft (from topographic map).

Average discharge. 17 years, 183 cfs (unadjusted).

Extremes. Maximum discharge during year, 1,440 cfs Jan. 10 (gage height, 3.91 ft); minimum, 4.9 cfs Oct. 15 (gage height, 0.38 ft).

1939-56: Maximum discharge, 2,830 cfs Sept. 12, 1954 (gage height, 5.69 ft); minimum, 1.1 cfs Aug. 22, 1941; minimum gage height, 0.29 ft Nov. 15, 16, 1947.

Remarks.--Records good e?jept those for period of no gage-height record, which are fair. 

Flow regulated by Square Pond and Mousam and Estes Lakes (combined capacity, about 

700,000,000 cu ft) and by powerplants above station.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Jan. 1O Jan. 11 to Sept. 30

5.4

10

1.5 

2.0 

2.5 

3.0

3.7

182

356

590

874

1,300

0.6 

.7

1.0 

1.5

28

40

73

216

2.0 412

2.5 642

3.0 902

3.6 1,250

Discharge, in cubic feet per s cond, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

18

13

9.5

9.5

9.5

99

142

19

24

9.1

9.1

9.1

9.1

9.1

17

20

15

13

46

56

108

50

54

96

92

85

83

81

39

40

240

1,564.0

50.5

+8.3

Nov.

370

375

295

245

270

320

335

275

245

225

210

196

200

240

205

240

230

210

182

200

325

275

250

182

186

150

154

170

138

130

7,028

234

+11.7

Dee.

108

130

72

90

166

176

T38

116

103

56

59

138

106

93

92

93

34

41

106

93

86

84

79

17

M

27

91

87

83

84

28

2,697

87.0

-6.9

Jan.

16

26

84

85

87

90

18

20

315

1,300

1,120

891

905

817

713

647

535

458

383

329

252

263

279

220

210

200

198

150

164

225

196

11,196

361

+65.6

Feb.

178

178

174

116

168

210 210"

176

170

170

122

178

215

174

160

158

152

102

148

*192

160

144

146

138

85

131

194

168

142

4,659

161

-16.8

Mar.

142

142

72

166

252

205

196

198

196

63

76

216

182

192

98

188

72

124

*216

188

186

188

185

66

79

227

198

198

198

198

65

4,973

160

-17.5

Apr.

128

248

220

240

315

412

476

535

516

467

*485

530

607

662

760

939

1,170

1,210

1,020

897

801

786

796

687

652

607

568

535

657

780

18,706

624

+71.4

May

697

5?2

549

516

441

454

454

391

370

366

345

252

271

313

286

260

245

212

151

202

230

202

184

184

152

65

198

490

415

294

340

10,121

326

-2.5

June

275

270

270

4O4

358

294

260

227

164

168

*245

205

186

190

184

47

50

205

190

178

192

176

55

32

180

166

139

136

131

48

5,625

188

-37.1

July

22

38

24

24

22

32

26

26

102

158

142

136

139

116

70

172

200

186

188

196

60

28

190

170

162

184

184

68

52

190

200

3,507

113

-47.5

Aug.

20O

T60

67

52

32

196

198

98

25

26

28

40

25

25

38

50

126

60

50

122

190

154

23

23

42

43

23

58

87

62

84

2,407

77.6

-21.0

Sept.

40

24

45

27

37

66

81

48

31

61

71

80

66

46

40

38

75

46

61

80

76

42

34

69

64

56

56

56

42

39

1,592

53.1

-22.8

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

58.8 

0.560 

0.65

246 

2.34 

2.61

Calendar year 1955: 

Water year 1955-56:

80.1 

0.763 

0.88

427 

4.07 

4.69

144

1.37 

1.48

142 

1.35 

1.56

695 

6.62 

7.39

324 

3.09 

3.56

Observed

Max 490 Min 9.1 Mean 147 

Max 1,300 Min 9.1 Mean 202

151 

1.44 

1.61

65.5 

0.624 

O. 72

56.6 

0.539 

0.62

30.3 

0.289 

0.32

Adjusted

Mean 143 Cfsm 1.36 In. 18.40 

Mean 2O1 Cfsm 1.91 In. 26. O9

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Square Pond and Mousam and Estes 

Lakes.

Note.--Ho gage-height record Oct. 21 to Dec. 12; discharge estimated on basis of recorded range in 

stage, weather records, and records of flow of nearby streams.
PISCATAQUA RIVER BASIN 73 

Salmon Palls River near South Lebanon, Maine

Location. Lat 43°19'40", long 70°55'40", on left bank at Stair Palls, l| miles south of 

South Lebanon, York County, and 2-J- miles upstream from Little River.

Drainage area. 147 sq mi.

Records available. November 1928 to September 1956.

Gage. Water-stage recorder. Datura of gage is 179.60 ft above mean sea level, datura of 

1929.

Average djscharge. 27 years (1929-56), 241 cfs (unadjusted).

Extremes.--Maximum discharge during year, 2,270 cfs Jan. 10 (gage height, 7.00 ft); minimum, 20 cfs Oct. 2, 3 (gage height, 1.29 ft).

1928-56: Maximum discharge, 5,490 cfs Mar. 19, 1936 (gage height, 12.31 ft); minimum, 4.7 cfs Aug. 28, 1950.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Plow partly regulated by powerplants above station and by Great East and Lovell Lakes 

and Horn, Wilsons and Milton Ponds (also controls Northeast and Town House Fonds), combined capacity, 1,280,000,000 cu ft.

Revisions (water years). WSP 1231: 1930-31(M), 1933(M). WSP 1301: 1936-37.

Rating table, water year 1955-56 (gage height, in feet, and discharg

in cubic feet per second) 

(Shifting-control method used Dec. 1 to Jan. 9)

119

187

400

3.0 

3.5 

4.0 

5.0 

6.0 

6.5

655

935

1,230

1,490

1,860

2,070

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

2Z

23

24

25

26

27

28

29

30

31

Ttotal

Mean

(t)

Oct.

61

zo

77

83

88

79

130

77

Z4

7Z

88

90

85

83

66

Z6

110

166

10Z

*10O

102

79

Z5

81

108

100

108

1O8

68

ZZ

Z35

Z.663

85.9

+15.3

Nov.

285

190

156

156

Z40

1ZO

116

200

170

182

182

172

130

205

Z05

146

Z20

Z4O

114

88

130

156

106

95

65

74

79

116

136

140

4,614

154

+95.3

Dec.

188

17Z

114

5Z

240

335

180

240

Z15

188

88

*Z55

260

Z60

Z50

172

88

88

250

350

475

440

360

ZZO

63

65

Z70

18 Z

13Z

17Z

100

6,464

209

-136.3

Jan.

38

65

205

220

188

158

97

68

680

2 , 050

1,810

1,700

1,550

1,420

1,330

*1,010

78Z

600

505

455

365

Z95

38O

37O

400

3Z5

Z50

170

160

Z51

18,173

586

+60.8

Feb.

301

Z71

238

Z03

169

Z55

Z67

Z59

251

246

206

129

259

238

306

288

3Z8

276

301

Z63

*259

284

276

Z46

18 Z

125

235

267

Z76

______

7,204

Z48

-1O2.4

Mar.

271

Z59

17Z

119

319

301

297

284

306

259

293

259

255

Z59

259

259

246

263

*Z55

Z4Z

Z30

24Z

234

234

319

251

Z55

Z51

Z51

246

238

7,9Z8

256

-90.1

Apr.

Z51

234

Z55

284

396

490

568

563

485

500

*575

655

726

776

748

1,160

1,620

1,760

1,7ZO

1,550

1.33U

1,350

1,340

1,Z80

1,110

831

73Z

760

970

1,320

Z6,339

878

+309.3

May

1,550

1,ZZO

935

694

655

54Z

475

427

418

440

4Z7

345

Z18

Z59

305

205

Z34

Z38

Z15

160

225

ZOO

Z15

192

150

1ZZ

345

300

Z7O

Z95

1Z,260

' 395

+67.7

June

260

240

Z05

340

Z80

245

2ZO

190

176

148

205

176

*165

169

16Z

145

106

148

138

135

138

135

88

54

145

141

134

132

1Z9

49

4,998

167

-Z7.0

July

56

26

25

Z3

23

30

31

Z6

116

199

138

138

1ZZ

108

83

120

1Z2

102

95

12Z

81

77

106

108

108

102

106

65

4Z

110

97

Z.707

87.3

-Z6.2

Aug.

3E

97

97

63

22

61

*126

TU5

100

88

88

74

81

97

66

116

97

79

31

65

108

102

88

92

61

26

100

9Z

9Z

90

97

2,591

83.6

-78.5

Sept.

70

38

32

138

110

92

88

56

Z3

68

85

8Z

85

90

50

38

106

97

85

85

92

68

Z6

18Z

188

106

110

120

70

27

Z,508

83.6

-Z.3

Adjusted for change in reservoir contents

Mean 

Cf am 

In.

101 

0.687 

0.79

249 

1.69 

1.89

Calendar year 1955: 

Water year 1955-56:

72.7 

0.495 

0.57

647 

4.40

5.07

146 

0.993 

1.07

166 

1.13 

1.30

1,187 

8.O7 

9.00

463 

3.15 

3.63

Observed

Max 755 Min ZO Mean Z21 

Max 2,050 Mln 20 Mean 269

140 

0.952

1.06

61.1 

0.416 

0.48

5.1 

0.035 

0.04

81.3 

0.553 

0.6Z

Adjusted

Mean Z03 Cfsm 1.38 In. 18.67 

Mean Z76 Cfsm 1.88 In. 25. 5Z

* Dischare measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Great East and Lovell La'<es, Horn, 

Wilson and Milton Ponds.

Note. No gage-height record Jan. ZO-24, Z7, Z8, May 19 to June 11; discharge estimate-! on basis 

of weather data and records of flow for nearby streams.
74 PISCATAQUA RIVER BASIN

Oyster River near Durham, N. H.

Location.--Lat 43°08'55", long 70°58'00" , on left bank 200 ft upstream from bridge on 

U.S. Highway 4, 2| miles west of Durham, Strafford County, and 7 miles upstream from 

mouth.

Drainage area. 12.1 sq mi.

Records available. October 1934 to September 1956. October and November 1934 monthly 

discharge only, published in WSP 1301.

Gage. Water-stage recorder and concrete control. Altitude of gage is 70 ft (from topographic map).

Average discharge. 22 years, 19.8 cfs.

Extremes. Maximum discharge during year, 351 cfs Jan. 9 (gage height, 3.24 ft); minimum, 

0.92 cfs Aug. 29.

1934-56: Maximum discharge, 862 cfs Sept. 11, 1954 (gage height, 5.47 ft); maximum 

gage height, 7.45 ft Mar. 19, 1936; minimum discharge, 0.39 cfs Aug. 9-11, 1949.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair.

Rating table, water year 1955-56, except periods of loe effect (gage 

height, In feet, and discharge, in cubic feet per second)

0.08 

.1 

.2

0.92

1.1

2.35

4.1

9.5

0.7 

1.0 

1.5 

2.0 

3.0

141

315

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

e

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Oct.

2.6

2.25

1.8

1.6

1.55

1.75

18

10

7.2

5.0

3.9

3.4

3:0

3.0

9.0

8.0

31

23

15

12

10

9.2

8.0

7.6

8.2

7.6

7.1

6.6

6.0

5.8

.§£.

331.15

10.7

0.884

1.02

Nov.

69

54

39

40

70

66

51

39

32

27

36

47

45

46

46

42

75

*57

45

37

33

29

25

27

25

21

19

19

16

16

1,193

39.8

3.29

3.67

Dec.

14

12

13

14

16

17

15

12

11

10

9.0

8.3

7.7

7.0

7.7

7.6

7.1

6.7

6.2

5.5

a4.8

a4.0

a3.6

a3.4

3.6

3.8

3.5

3.3

3.2

3.1

5.0

246.1

7.94

0.656

0.76

Jan.

3.0

2.6

277

2.9

3.1

3.1

3.2

6.0

200

290

160

128

173

136

111

72

66

53

41

36

29

24

21

19

*18

17

17

16

13

14

14

1,694.6

54.7

4.52

5.21

Feb.

14

13

13

13

14

12

T6

16

16

17

17

20

23

24

23

22

21

18

18

17

16

15

15

14

16

20

19

19

18

499

17.2

1.42

1.53

Mar.

17

16

18

25

28

25

23

22

22

20

19

19

18

18

18

16

16

17

15

15

16

18

20

19

18

18

17

18

18

17

18

584

18.8

1.55

1.79

Apr.

20

23

28

32

48

81

109

68

62

72

91

116

136

138

129

212

273

208

162

135

118

108

99

99

87

76

72

69

98

144

3,113

104

8.60

9.57

May

97

68

59

51

46

41

36

32

*28

30

28

25

24

22

21

20

20

18

17

16

14

14

13

13

12

11

36

50

36

27

23

948

30.6

2.53

2.91

June

20

19

32

48

34

25

20

16

15

14

*13

11

9.4

8.3

7.4

6.6

6.0

5.2

4.8

4.4

4.3

4.3

3.8

3.5

3.5

3.2

3.3

4.6

3.4

2.8

355.8

11.9

0.983

1.09

July

2.6

2.4

2.2

2.0

2.0

5.2

5.8

4.2

"7.6 11

5.2

4.1

3.7

11

7.8

5.8

5.0

4.3

3.7

3.2

3.0

4.0

4.1

5.6

4.0

3.3

2.7

2.4

2.05

1.85

*1.8

133.60

4.31

0.356

0.41

Aug.

1.65

1.6

1.45

1.35

1.35

1.35

1.3

1.3

1.3

1.25

1.2

1.15

1.15

1.2

1.1

1.05

1.05

1.0

1.0

1.0

1.15

1.55

1.3

*1.2

1.15

1.0

1.0

1.0

.97

*1705

1.5

37.67

1.22

0.101

0.12

Sept.

1.8

1.45

1.55

1.3

1.2

1.1

1.45

1.2

1.1

1.1

1.05

1.05

1.15

1.25

1.55

2.1

3.0

3.2

2.05

2.5

2.8

1.9

1.7

12

5.7

3.3

2.5

2.2

2.05

1.85

68.15

2.27

0.188

0.21

Calendar year 1955: Max 114 Min 0.83 Mean 18.4 Cfsm 1.52 In. 20.71

Water year 1955-56: Max 290 Min 0.97 Mean 25.1 Cfsm 2.07 In. 28.29

Peak discharge (base, 170 cfs).--Jan. 9 (11 to 12 p.m.) 351 cfs (3.24 ft); Ap-. 17 (4 a.m.) 288 

cfs (2.86 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records, recorded range in stage 

and records for Lamprey River near Newmarket.

Note.--Stage-discharge relation affected by ice Dec. 19, 20, Dec. 25 to Jan. 10, Jan. 18-25, 

Feb. 8-24, Feb. 26 to Mar. 13, Mar.21-27.
PISCATAQUA RIVER BASIN 75

Lamprey River near Newmarket, N. H.

Location. Lat 43°06'05"( long 70°57'20", on right bank 200 ft upstream from Packers Falls, 

2 miles northwest of Newmarket, Rookingham County, and 4.6 miles upstream from mouth

Drainage area. 183 sq mi.

Records available. July 1934 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 40 ft (from topographic map).

Average discharge. 22 years, 285 cfs.

Extremes. Maximum discharge during year, 2,960 cfs Apr. 18 (gage height, 9.18 ft); minimum daily, 9.7 cfs Aug. 20.

1934-56: Maximum discharge, 5,490 cfs Mar. 20, 1936 (gage height, 14.88 ft), from 

rating curve extended above 3,100 cfs on basis of computation of flew over dam at gage 

height 14.69 ft; minimum daily, 1 cfs Oct. 21, 1935.

Remarks. Records excellent except those below 150 cfs, which are good, and those for

periods of ice effect, which are fair. Plow regulated by Pawtuckaway and Mendums Ponds 

(combined capacity, about 600,000,000 cu ft).

Revisions (water years). WSP 1231: 1936-37.

Rating tables, water year 1955-56, except periods of ioe effect (gage 

height, in feet, and discharge, In cubic feet per second)

0.8 

1.0 

1.5 

2.0

Oct. 1 to Apr. 18

22 3.0

37 5.0

98 7.0

176 10.0

Apr. 19 to Sept. SO

382

980

1,850

3,390

0.5 

.7

9.2

15

26

1.1 

1.5 

2.0

92

176

Note. Same as preceding table above 2.O ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

I 

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

30 

31

27

24

22

24

126

143

148

139

131

122

122

118

162

219

382

428

372

313

274

266

236

217

209

196

190

190

196

185

490

5,732

185

1.01

1.16

Nov.

664 

670

578

486

667

781

790

697

549

436

428

499

535

592

646

631

760

*769

757

643

524

452

394

416

431

406

375

356

342

290

16,564

552

3.02

3.37

Dec.

320 

280

286

282

292

305

265

276

254

244

222

213

202

192

196

189

176

185

176

135

115

120

115

115

120

115

110

105

110

110

105

5,930

191

1.04

1.21

Jan.

95 

88

86

88

105

145

140

150

745

1,680

2,360

2,740

*2,530

2,180

2,050

1,580

1,210

940

730

650

580

500

450

460

410

390

356

330

310

300

290

24,668

796

4.35

5.01

Feb.

290 

270

255

215

240

235

240

260

270

265

260

265

275

270

275

250

230

240

220

240

230

200

210

*195

200

230

240

245

230

-------

7,045

243

1.33

1.43

Mar.

210 

220

225

260

300

310

3OO

290

275

270

260

255

250

245

240

220

185

230

235

225

225

230

240

240

240

250

245

240

240

235

240

7,630

246

1.34

1.55

Apr.

245 

270

320

370

483

718

956

860

930

981

1,030

1,130

1,260

1,430

1,570

2,020

2,620

«2,870

2,720

2,270

1,900 i,e7<r>

1.E50

1,520

1,410

1,270

. 1,170

1,090

1,260

1,650

39,543

1,318

7.20

8.04

May

1,760 

1,560

1,240

1,010

858

754

670

589

*521

462

431

411

387

370

344

324

307

284

260

240

224

176

130

183

169

'209 158

358

382

358

*296

15,485

500

2.73

3.15

June

256 

242

292

380

370

344

288

234

202

181

*169

151

135

120

107

94

84

72

64

57

52

50

47

43

42

38

37

45

44

38

4,278

143

0.781

0.87

July

36 

32

29

28

25

42

55

54

73

95

72

57

54

67

82

66

60

55

53

42

11

26

37

38

40

34

28

26

23

21

*20

1,381

44.5

0.243

0.28

Aug.

19

18

16

15

15

15

14

14

14

14

13

13

14

14

13

13

12

11

10

9.7

10

10

10

*10

10

11

11

11

11

11

11

392.7

12.7

0.069

0.08

Sept.

11

15

16

16

14

12

12

12

12

11

11

11

11

11

11

11

20

24

22

20

22

21

19

55

12

39

34

32

28

24

616

20.5

0.112

0.13

Calendar year 1955: Max 892 Mln 12 Mean 263 Cfsm 1.44 In. 1?.49

Water year 1955-56: Max 2,87o Mln 9.7 Mean 353 Cfsm 1.93 In. 26.28

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Dec. 1, 2, 7, Dec. 21 to Jan. 8, Jan. 19-26, 

Jan. 28 to Feb. 1, Feb. 3 to Apr. 3, Apr. 8, 9. Discharge in cubic feet per second per square mile 

and runoff in inches may not represent natural flow because of regulation.
76 MERRIMACK RIVER BASIN

Pemigewasset River at Woodstock, N. H.

Location. Lat 43°58'35", long 71°40'50", on right bank 0.2 mile east of Woodstock, Grafton County, and 0.7 mile upstream from Eastman Brook.

Drainage area. 193 sq ml.

Records available. October 1939 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 615 ft (from topographic map).

Average discharge. 17 years, 524 cfs.

Extremes. Maximum discharge during year, 7,370 cfs July 14 (gage height, 8.22 ft); minimum daily, 83 cfs Oct. 6.

1939-56: Maximum discharge, 22,800 cfs Nov. 26, 1950 (gage height, 12.05 ft), from 

rating curve extended above 9,300 cfs by logarithmic plotting; minimum daily, 42 cfs 

Feb. 11, 1948.

Remarks. Records excellent except those for periods of Ice effect or no gage-height record, which are fair. Some diurnal fluctuation caused by powerplant abcve station.

Rating tables, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, in cubic feet per, second)

Oct. 1 to July 14 July 15 to Sept. 30

2.3

2.4 

2.7 

3.0 

3.5

97

175

279

515

4.0 825

5.0 1,710

6.0 2,850-

7.0 4,550

2.4 93

2.6 134

3.0 259

3.5 495

4.0 825

5.0 1,710

6.0 2,850

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

178

136

108 

97

89

83

889

550

345

235

185

*160

143

133

167

207

273

340

238

201

194

249

204

188

370

291 242

218

235

232

1,480

8,660

279

1.45

1.67

Nov.

1,260

901

587 

610

1,410

1

940

708

629

521

440

414

390

390

386

429

371

624

466

358

311

295

268

238

299

272

214

210

221

*185

160

14,507

484

2.51

2.80

Dec.

178

146

178 

178

178

160

110

140

135

130

125

130

*130

120

125

125

115

120

115

105

98

92

86

97

110

105

100

98

96

98

94

3,817

123

0.637

0.74

Jan.

88

86 BT 

88

94

98

96

96

2,200

5,250

1,860

1,450

1,610

986

740

611

*504

400

320

300

290

260

240

220

220

210

210

180

170

190

190

17,343

559

2,90

3.54

Feb.

160

160

170 

145

165

165

160

155

150

150

140

140

140

140

140

135

125

145

145

140

140

135

130

125

150

200

290

210

160

4,510

156

0.808

0.87

Mar.

145

145

141 

141

136

150

133

133

130

128

123

130

125

123

125

111

123

123

115

118

115

123

136

128

110

115

*111

111

108

115

115

3,859

124

0.642

0.74

Apr.

108

120

145 

195

840

902

806

655

471

371

371

515

629

617

527

745

1,740

1,100

860

740

689

677

593

510

460

493

517

1,280

2,880

4,440

24,976

853

4.32

4.81

May

*2,260

1,740

2,180 

2,070

1,840

1,840

1,760

1,470

1,200

1,950

1,710

2,250

4,000

2,980

2,340

2,130

1,940

1,260

1,000

970

846

910 i.seo1

1,120

760

647

3,340

3,270

1,610

1,340

1,520

55,835

1,801

9.53

10.76

June

1,320

1,050

2.550 

2,180

 1,380

1,020

825

695

625

581

599

498

429

381

340

307

275

260

242

232

228

252

207

264

287

249

214

299

287

252

18,286

610

5.16

3.52

July

197

188

172 

158

146

190

257

316

2,130

*l,9tO

730

515

504

4,030

1,720

1,150

811

607

468

335

334

517

3<-3

425

312

287

230

210

178

17 5

157

19,602

632

3.27

5.78

Aug.

152

144

132 

127

121

121

112

110

127

132

255

152

127

110

108

102

95

97

102

114

102

*104

95

129

183

102

99

97

93

96

507

4,147

134

0.694

0.80

Sept.

953

478

652 

343

241

213

700

371

271

227

197

187

169

225

525

330

961

1,070

581

1,300

1,040

633

495

*1,B10

1,120

755

574

473

405

352

17,651

588

3.05

3.40

Calendar year 1955: Max 5,160 Min 64 Mean 455 Cfsm 2.36 in . 32.01

Water year 1955-56: Max 4,440 Min 83 Mean 528 Cfsm 2.74 in . 37.23

Peak discharge (base, 7,10O ofs).--July 14 (9:3O a.m.) 7,370 cfs (8.22 ft).

* Discharge measurement made on this day.

Note.--No gage-height record Dec. 29 to Jan. 8, Feb. 17 to Mar. 2, Mar. 26; discharge estimated 

on basis of 1 discharge measurement, weather records, recorded range in stage when available, and 

records for Pemigewasset River at Plymouth and Baker River River near Rumney. Stage-discharge relation affected by ice Dec. 7 to Jan. 1O, Jan. 19 to Feb. 16, Mar. 25, Apr. 3-5.
MERRIMACK RIVER BASIN 77 

Baker River near Rumney, N. H.

Location. Lat 43°47'45", long 71°50'45", on right bank 0.3 mile upstream from Halls Brook 

and if miles southwest of Rumney, Grafton County.

Drainage area. 143 sq mi.

Records available. October 1928 to September 1956. October 1928 monthly discharge only, 

published in WSP 1301.

Gage. Water-stage recorder. Concrete control since Sept. 10, 1938. Altitude of gage is 

495 ft (from topographic map).

Average discharge. 28 years, 260 cfs.

Extremes. Maximum discharge during year, 5,240 cfs May 27 (gage height, 7.?0 ft), from 

rating curve extended above 2,900 cfs on basis of slope-area determinations at gage 

heights 13.03, 14.49, and 15.50 ft; minimum, 25 cfs Aug. 17.

1928-56: Maximum discharge, 21,400 cfs June 15, 1942 (gage height, 15.50 ft), from 

rating curve extended above 3,800 cfs as described above; minimum, 6.5 cfs Dec. 4, 1947, 

caused by ice conditions upstream.

Maximum discharge known, 25,900 cfs Nov. 3, 1927 (gage height, 17.4 ft, from floodmarks), from rating curve extended above 3,800 cfs as described above.

Remarks.--Records excellent except those for periods of ice effect, which are fair.

Revisions (water years) . WSP 726: Drainage area. WSP 781: 1934(M) . WSP 1231: 1929- 

33(M), 1934.

Rating table, water year 1955-56, except periods or Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

2.3 

2.5 

2.8 

3.1

113

212

3.5 

4.0 

5.0 

7.0

395

720

1,620

3,900

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf sm

In.

Oct.

58

50

39

34

32

33

236

176

125

87

69

61

*54

48

50

69

153

290

168

122

103

97

87

80

113

119

105

103

97

496

3,444

111

0.776

0.90

Nov.

457

355

252

299

1,110

629

428

370

310

256

240

248

244

224

*236

208

274

240

194

168

145

145

120

158

149

116

110

113

97

87

7,982

266

1.86

2.08

Dec.

85

73

92

90

15

78

64

80

76

72

72

67

*69

69

71

67

64

67

64

53

49

46

43

46

54

52

49

47

44

47

47

1,992

64.3

0.450

0.52

Jan.

46

42

42

44

48

50

48

47

100

800

810

780

1,050

553

400

305

*240

150

120

145

160

150

140

120

115

110

115

105

90

100

98

7,123

230

1.61

1.85

Feb.

94

92

94

82

96

94

98

98

100

97

95

92

92

92

87

67

76

90

90

85

80

72

81

85

95

125

160

140

115

2,764

95.3

0.666

0.72

Mar.

110

TTo

100

100

95

95

97

95

98

97

95

103

100

97

95

81

95

97

92

95

87

93

100

92

87

91

*86

83

83

85

83

2,917

94.1

0.658

0.76

Apr.

80

93

128

180

550

900

934

685

480

390

426

629

755

727

629

924

1,780

1,250

968

798

734

734

678

552

510

573

564

1,260

2,670

5,280

24,861

829

5.80

6.47

May

*1,700

1,270

1,500

1,350

1,180

1,030

886

741

573

790

678

685

870

783

664

552

580

422

359

330

287

270

320

292

232

208

1,970

2,120

846

636

615

24,739

798

5.58

6.43

June

480

380

"934 941

*573

434

334

274

240

240

240

197

162

139

119

103

90

78

74

74

69

67

63

61

82

78

63

63

61

J56

6,769

226

1.58

1.76

July

50

45

42

39

38

60

100

83

534

573

240

175

305

2,140

843

573

*630

367

252

190

149

133

128

165

142

165

128

103

85

76

67

8,620

278

1.94

2.24

Aug.

63

59

54

50

48

45

42

39

38

38

42

40

39

34

32

30

28

28

32

32

*30

33

32

33

48

38

34

32

29

29

104

1,255

40.5

0.283

0.33

Sept.

166

103

180

103

76

67

143

105

78

65

58

54

50

46

59

59

368

426

190

261

283

179

139

816

*456

287

216

172

145

125

5,475

182

1.27

1.42

Calendar year 1955: Max 2,910 Mln 21 Mean 243 Cfsm 1.70 In. 23.03

Water year 1955-56: Max 3,280 Mln 28 Mean 268 Cfsm 1.87 In. 25.48

i^o,.v discharge (base. 5,600 cfs).--Apr. 3O (4 a.m.) 3,900 cfs (7.00 ft); May 27 (10 p.m.) 5,240 

cfs (7.90 ft); July 14 (10 a.m.) 3,910 cfs (7.01 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 27 to Dec. 2, Dec. 6, 7, Dec. 15 to Jan. 13, 

Jan. 15 to Feb. 8, Feb. 16, 17, Feb. 22 to Mar. 4, Mar. 9, 16, 25, Apr. 4-6 (no gage-height record 

Dec. 21-25).
78 MERRIMACK RIVER BASIN

Pemigewasset River at Plymouth, N. H.

Location.--Lat 43°45'35", long 71°41 I 10", on right bank 150 ft downstream from bridge at 

Plymouth, Qrafton County, and a third of a mile downstream from Baker Riv3r.

Drainage area.--622 sq mi.

Records available.--October 1903 to September 1956. Records for April 1886 to September 

1903, published in WSP 124, have been found to be unreliable and should nit be used.

Gage.--Water-stage recorder. Datum of gage is 457.07 ft above mean sea level, datum of

~]T929. Prior to Jan. 1, 1910, staff or chain gages at sites 150 and 200 f; upstream at 

prese~ht datum or datum 1.11 ft lower. Jan. 1, 1910, to Sept. 30, 1926, staff gage at 

site 200 ft upstream at present datum.

Average discharge. 53 years, 1,368 cfs.

Extremes. Maximum discharge during year, 15,900 cfs May 28; maximum gage height, 11.54 ft 

Jan. 10 (ice jam); minimum discharge, 172 cfs Aug. 30, but may have been less during 

day of ice effect Dec. 23; minimum daily, 180 cfs Dec. 23.

1903-56: Maximum discharge', 65,400 cfs Mar. 19, 1936 (gage height, 29.0 ft, from 

floodmarks), from rating carve extended above 33,000 cfs on basis of compifcations of 

flow over dam at gage heights 23.0, 27.4, and 29.0 ft; minimum, 39 cfs Oct. 1, 3, 4, 

1948; minimum daily, 45 cfs Sept. 20, 1923.

Remarks.--Records excellent except those for periods of ice effect or no gags-height record, which are fair. Some diurnal fluctuation caused by powerplants abova station.

Revisions (water years).--WSP 471: 1912-13 calendar years. WSP 726: Drainage area.

 WSP 1231: 1904-11, 1913-14, 1915-16(M), 1917-18, 1919(M), 1920-25, 1926-27(M), 1929- 

31(M). See also Records available.

Rating tables, water year 1955-56, except periods of loe effect (gage

height, In feet, and discharge, In cubic feet per second) 

(Shifting-control method used Jan. 26 to Feb. 26, Feb. 29 to Apr. 4; 

rate of change In stage used as a factor Jan. 11, Apr. 29 to 

May 1, May 27, 28, June 3, 4, July 14, 15)

Oct. 1 to May 27 May 28 to Sept. 30

0.3 175

.6 307

1.0 580

2.0 1,650

6.0 7,150

10.0 14,400

0.2 167

.5 330

1.0 700

2.0 1,740

6.0 7,150

9.0 12,400

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24 

25

26

27

28

29

30

31

Total

Mean

Cf am

In.

Oct.

307

297

239

226

213

209

1,090

1,220

780

540

422

364

324

302

297

377

495

1,070

710

548

471

478

450

415 

569

643

548

508

 478 

486

2.510

17,586

567

0.912

1.05

Nov.

3,000

2,100

1,380

1,270

4.550

2,950

1,990

1,670

1,420

1,180

1,090

1,090

1,050

981

1,100

970

1,410

1,330

970

830

720

680

610

730 

720

560

520

556

 480 

420

58,107

1,270

2.04

2.28

Dec.

350" 440

422

415

428

390

520

550

350

350

520

510

520

500

520

510

290

295

295

230

200

al90

alSO

a200 

a270

a260

»a250

240

230 

240

250

9,325

301

0.484

0.56

Jan.

240

220

215

230

250

260

250

240

1,800

11.000

9,750

5,810

5,410

3,230

2,190

1,770

1,460

900

700

850

900

800

700

600 

600

550

520

490

460 

*480

490

53,365

1,721

2.77

3.19

Feb.

440

400

380

590

410

410

420

420

420

410

396

402

596

383

570

550

330

360

360

350

347

300

300

300 

340

500

*740

600

490

11,714

404

0.650

0.70

Mar.

T50- 450

442

450

435

428

415

410

440

430

430

440

440

428

420

350

590

430

420

420

400

410

450

430 

400

400

 400

370

360 

580

560

12,878

415

0.667

0.77

Apr.

550

3SO

460

600

2,200

3,750

3,500

2,790

2,050

1,660

1,710

2,290

2,840

2,790

2,420

3,120

6,250

4,960

3,790

3,210

2,850

2,840

2,570

2,130 

1,860

2,030

1,930

3,600

9,010 

*15 . 700

93,620

5,121

5.02

5.60

May

8,200

5,590

6,080

5,950

5,550

4,780

4,370

3,790

2,990

5,770

3,940

5,720

5,910

5,770

4,640

3,930

3,860

2,720

2,160

2,020

1,780

1,690

2,200

2,210 

1,550

1.520

5,210

11.200

4,630

3,320

*3, 220

127,670

4,118

6.62

7.63

June

2,850

2,280

5,010

6.550

3,860

2,720

2,050

1,680

1,480

1,410

1,400

1,180

1,020

894

785

692

a660

a600

a570

a 540

a 540

a540

a470

a520 

a630

a600

»a490

558

521 

469

43,549

1,452

2.55

2.60

July Aug.

411 404

570 584

550 550

511 530

295 511

361 299

543 280

556 262

2,750 268

4,090 280

1,730 376

1,110 550

1,250 295

8.650 257

5,350 250

2,910 213

2,690 204

1,750 190

1,300 224

1,020 240

848 218

768 »218

742 218

1,170 204 

884 327

785 280

676 199

582 204

506 181 

 462 181

433 412

45,571 8,387

1,470 271

2.36 0.436

2.72 0.50

Sept.

1,480

884

1,090

742

513

426

1,140

866

589

476

411

377

557

524

592

521

1,520

2,990

1,380

1,670

2,410

1,380

1,050

3.660 

 3,070

1,770

1,350

1,100

932 

803

35,873

1,196

1.92

2.14

Calendar year 1955: Max 12,300 Mln 146 Mean 1,172 cfsm 1.88 In. 25.57

Water year 1955-56: Max 13,700 Mln 180 Mean 1,360 Cfsm 2.19 In. 29.74

Peak discharge (base. 12.600 cfs). Jan. 10 (about 6 p.m.) about 13,400 cfs; Apr. 30 (2:30 p.m.) 

14,800 cfs; May 28 (2:50 a.m.) 15,900 cfsj July 14 (5 p.m.) 13,700 cfs.

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 2 discharge measurements, weather records, 

recorded range In stage, powerplant records, and records for Pemigewasset River at Woodstock, and 

Baiter River near Rumney.

Note. Stage-discharge relation affected by Ice Nov. 21-23, 26, 27, Nov. 29 to Dec. 2, Dec. 6 to 

Jan. 10, Jan. 18 to Feb. 10, Feb. 16-20, Feb. 22 to Mar. 2, Mar. 4, 7-13, Mar. 15 to Apr. 7, Apr. 9.
MERRIMACK RIVER BASIN

Squam River at Ashland, N. H.

Location. Lat 43 0 42'15", long 71 "37'50", on right bank 200 ft upstream from bridge on 

U. S. Highway 3 and a third of a mile north of Ashland, Grafton County.

Drainage area. 57.6 sq mi.

Records available. August 1939 to September 1956.

Gage. Water-stage recorder and concrete control. Altitude of gage is 545 ft (from topographic map).

Average discharge. 17 years, 93.3 cfs.

Extremes. Maximum discharge during year, 131 cfs Apr. 17, 18 (gage height, 10.72 ft); minimum daily, 68 ofs Dec. 29 to Jan. 8, Jan. 11, 12.

1939-56: Maximum discharge, 498 cfs Apr. 11, 1951 (gage height, 11.93 ft); minimum 

daily, 14 ofs Feb. 4, 1940.

Remarks. Records excellent. Plow completely regulated by Squam and Little Souam Lakes.

Rating table, water year 1955-56 (gage height, in. feet, and 

discharge, In cubic feet per second)

10.3

10.4

10.6

10.8

107

149

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6 

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27 

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

86

86

86

86

86

86 

86

84

84

84

84

*83

81

79

78

76

78

79

79

78

78

78

78

78

76

76

tt

75

75

78

2,491

80.4

-

-

 Nov.

79

79

79

78

79

78 

78

78

78

78

78

78

76

78

78

78

78

78

78

78

76

76

78

78

78

78

78 

78

78 

78

2,338

77.9

-

-

Dec.

78

78

78

78

78

78 

78

78

78

78

78

78

*78

78

79

76

70

70

70

70

70

70

70

70

70

70

70 

70

.68

68 

68

2,291

73.9

-

-

Jan.

68

68

68

68

68

68 

68

68

70

To

68

68

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70 

70

70

70

70

2,150

69.4

-

-

Feb.

70

To

70

70

70

70 

81

87

87

87

87

87

87

87

87

87

87

87

87

87

*87

87

87

87

87

87

87 

87

87

2,415

83.3

-

-

Mar.

81

87

87

87

87

87 

87

87

113

127

127

125

123

123

123

123

123

123

123

123

121

121

121

121

121

121

119 

119

119

119

121

3,495

113

-

-

Apr.

121

121

121

121

121

123 

123

121

121

121

123

123

123

123

123

125

129

129

127

103

89

89

89

89

89

'69

89 

89

91

113

3,358

112

-

-

May

*123

123

125

125

127

127 

127

105

91

91

91

91

91

91

91

89

89

89

89

89

89

89

89

89

89

89

91 

93

93

93

93

3,061

98.7

-

-

June

93

93

94

94

113

m127

127

127

127

127

127

127

127

127

127

105

93

81

73

73

73

'73 73

73

73 

73

73

75

3,020

101

-

-

July

73

Ts

73

73

73

73 

73

73

73

73

73

73

73

73

75

73

73

*73

73

73

73

75

75

75

75

83

89 

89

89

QQ

89

2,363

76.2

-

-

Aug.

89

89

89

89

89

89 

89

89

89

89

87

87

87

87

87

87

86

86

86

86

86

86

84

84

84

84

84

83

83

2,680

86.5

-

-

Sept.

83

83

83

83

83

83 

83

83

83

81

81

81

81

81

81

81

81

81

81

81

79

T9

79

*81

81

79

79 

79

79 

79

2,432

81.1

-

-

Calendar year 1955: Max 159 Mln 68 Mean 93.3 Cfsm - In. -

Water year 1955-56: Max 129 Mln 68 Mean 87.7 Cfsm - In. -

Discharge measurement made on this day.
MERRIMACK RIVER BASIN

Smith River near Bristol, N. H.

Location. Lat 43°34'00", long 71°44'50", on right bank in Hill, Merrimaok County, 

1.5 miles upstream from mouth and if miles southwest of Bristol, Grafton County.

Drainage area. 85.8 sq mi.

Records available.--May 1918 to September 1956.

Gage. Water-stage recorder. Datum of gage is 449.80 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers). Prior to Nov. 25, 1933, staff gage at site 

lj miles upstream at different datum.

Average discharge. 38 years, 144 cfs.

Extremes. Maximum discharge during year, 1,670 cfs Apr. 30 (gage height, 6.41 ft); minimum daily, 10 cfs Aug. 27-30.

1918-56: Maximum discharge, 8,100 cfs Mar. 19, 1936 (gage height, 16.09 ft, from 

floodmarks), from rating curve extended above 2,700 cfs on basis of contracted-opening 

determination of peak flow; minimum daily, 2.7 cfs Aug. 2, 1933.

Remarks.--Records excellent except those for periods of ice effect, which are good. Prior 

to 1954, some diurnal fluctuation caused by small mill above station; greater fluctuation prior to 1941.

Revisions (water years). WSP 711: Drainage area. WSP 781: 1934. WSP 1231: 1919, 

1920-2l(M), 1922-31, 1932-33(M), 1941-43.

Rating table, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge. In cubic feet per second)

1.9

2.0 

2.2 

2.5 

3.0

3.5 

4.0 

5.0 

6.0 

6.5

207

380

860

1,420

1,720

Discharge, In cubic feet per second, water year October 19.55 to Septemter 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

25 

25

23

21

11

21

89

106

82

63

*48

38

34

31

70

123

161

311

197

133

103

82

71

66

79

88

81

73

66

61 

323

2,713

87.5

1.02

1.18

Nov.

456 

297

204

233

715

675

438

297

238

191

184

204

194

174

*164

151

184

166

135

117

108

101

91

93

96

87

74

81

73 

62

6,283

209

2.44

2.72

Dec.

64 

56

65

67

TZ

68

52

57

53

50

48

48

*48

49

51

48

48

46

42

32

b28

b27

27

27

29

30

30

28

16

26 

27

1,369

44.2

0.515

0.59

Jan.

25 

25

24

25

27

29

28

30

b!35

b550

b640

b720

815

630

b460

b320

*b220

b!90

b!75

b!55

bllO

88

81

72

68

64

64

57

52

56

55

5,990

193

2.25

2.60

Feb.

55 

56

57

54

59

58

58

60

62

61

60

60

60

60

60

59

58

59

58

58

*56

55

54

53

55

65

71

74

67

1,722

59.4

0.692

0.75

Mar.

62 

60

61

65

67

64

62

61

60

60

54

60

61

60

60

56

54

56

59

60

57

60

64

64

61

60

60

59

58

*59

60

1,864

60.1

O.7OO

0.81

Apr.

61 

67

83

101

156

b275

b490

b490

376

319

346

502

575

556

510

645

942

1,010

915

765

665

645

625

542

474

488

474

685

1,280

1 . 610

16,672

556

6.48

7.23

May

*1.410 

1,020

871

795

735

650

533

420

304

304

330

283

257

250

263

235

221

191

174

158

144

131

125

125

111

103

393

845

705

456

334

12,876

415

4.84

5.58

June

263 

218

.438

685

*5T5

330

238

184

154

147

154

131

113

93

81

71

65

58

52

48

47

46

12

46

53

53

52

49

48

45

4,519

151

1.76

1.96

July

38 

35

33

28

27

46

59

61

65

100

84

63

66

212

T86

110

110

87

66

55

44

41

41

*<0

40

48

48

35

30

26

24

1,948

62.8

0.732

0.84

Aug.

23

21

20

19

18

17

17

16

16

15

14

14

13

13

12

11

11

11

14

14

*13

13

12

12

11

11

i°

10

10

10

13

434

14.0

0.163

0.19

Sept.

15 

16

19

18

16

14

18

18

17

15

14

14

14

14

ii

17

35

60

49

48

48

41

39

358

*274

131

84

66

56

47

1,588

52.9

0.617

0.69

Calendar year 1955: Max 882 Mln 9.6 Mean 140 Cfsm 1.63 In. 22.09

Water year 1955-56: Max 1,61O Mln 10 Mean 15S Cfsm 1.84 In. 25.14

Peak discharge (base. 1.150 cfs).--Apr. 30 (3 a.m.) 1,670 cfs (6.41 ft). 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
MERRIMACK RIVER BASIN 81

Lake Winnipesaukee at The Weirs, N. H.

Location.--Lat 43°36'20", long 71°27'25", 800 ft north of highway bridge at The Weirs, 

Belknap County.

Drainage area. 363 sq mi at outlet at Lakeport.

Records available. September 1933 to September 1956. September 1933 to October 1937 

month-end contents only determined from gage at Lakeport, published in WSP 1301.

Gage. Water-stage recorder. Datum of gage is 500.02 ft above mean sea level, d?tum of 

1929.

Extremes. Maximum daily gage height during year, 4.69 ft June 4; minimum dally, 1.71 ft 

Mar. 28, 29.

1937-56: Maximum daily gage height, 5.86 ft May 22, 23, 1954; minimum daily, 

0.63 ft Dec. 11, 1941.

Remarks. Lake used for recreation and conservation for development of water power. 

Total usable capacity, 18,240,000.000 cu ft between elevations 494.55 ft (bottom of 

flume at Lakeport) and 504.22 ft (top of flashboards at outlet in Lakeport). Draft 

limited by law to an average of 250 cfs during the seven days in any week between 

June 1 and Oct. 15 of any year when gage reading is at or below 502.4 ft abovs mean 

sea level. Stage regulated at outlet and by Wentworth, Merrymeeting (see p. 109), 

and other lakes. Contents given herein are computed from gage heights at 12 p.m. on 

last day of month, eliminating the effect of seiche and wind action.

Capacity table, water year 1955-56 (gage height. In feet, and contents. 

In millions of cubic feet)

1.0 

2.0 

3.0 

4.0 

5.0

11,930

13,880

15,840

17,840

19,850

Mean gage height. In feet, water year October 1955 to September 1956

Day

1

2

5

4

5

6

7

8

9

10

11

12

15

14

15

16

17

18

19

20

21

22

25

24

25

26

27

28

29

30

31

(t)

(*).

(tt)

dot.

2.76

2.75

2.72

2.70

2.69

2.70

2.80

2779

2.77

2.76

2.75

2.76

2.76

2.78

2.76

2.74

2.75

2.72

2.72

2.70

2.69

2.68

2.67

2.66

2.64

2.65

2.63

2.63

2.62

2764

2.74

15,370

-40

-14.9

Nov.

2.78

2.80

2.81

2.85

2.93

2.94

2.97

2.99

3.00

3.00

3.03

3.04

3.04

3.05

3.03

3.07

¥703

3.01

3.06

3.03

3.02

2.99

3.03

3.01

3.01

3.00

2.98

2.98

2.93

2.88

15,610

+240

+92.6

Dec.

2.88

2.88

2.87

2.90

2795

2.86

2.86

2.86

2.82

2.76

2.73

2.70

2.68

2.66

2.62

2.54

2.53

2.49

2.45

2.38

2.34

2.55

2.33

2.32

2.31

2.30

2735

2.31

2.31

2.30

2.30

14,470

-1,140

-426

Jan.

2.30

2.30

2.29

2.29

2.28

2.27

2.29

2.36

2.45

2.56

2.67

2.76

2.91

3.06

3.13

3.17

3.18

3.18

3.18

5.18

3.18

3.18

3.18

5.17

5.19

3.19

3.19

3.18

3.15

3.14

3.12

16,060

+1,590

+594

Feb.

3.10

3.09

3.08

3.06

3.05

3.03

3.06

5.05

5.01

2.97

2.94

2.92

2.88

2.84

2.81

2.76

2.72

2.70

2.68

2.65

2.59

2.54

2.50

2.45

2.42

2.42

2.41

2.56

2.50

__

14,430

-1,630

-651

Calendar year 1955. ................... * -3, . . _ . .

Mar.

2.27

F722"

2.18

2.20

2.19

2.15

2.15

2.15

2.12

2.08

2.04

2.00

1.98

1.96

1.95

1.94

1.96

1.92

1.89

1.85

1.82

1.78

1.74

1.75

1.74

1.74

1.72

1.71

1.71

1.72

1.74

13,370

-1,060

-396

35O t

Apr.

1.74

1.75

1.76

1.80

1.84

1.89

1.94

2.01

2.06

2.10

2.15

2.20

2.26

2.34

2.42

2.57

2.73

2.86

2.97

3.06

3.15

3.24

3.34

3.41

3.47

5.53

3.58

5.65

3.78

3.90

17,800

+4,430

+1,709

May

4.02

4.09

4.16

4.22

4.29

4.34

4.39

4.39

4.42

4.45

4.49

4.48

4.49

4.50

4.49

4.49

4.49

4.48

4.45

4.43

4.42

4.39

4.36

4.35

4.35

4.35

4.46

4.56

4.58

1757

4.57

19,000

+1,200

+448

h -96.7

June

4.58

4.58

4.63

4.69

4768

4.65

4.61

4.60

4.57

4.53

4.50

4.46

4.44

4.43

4.43

4.41

4.40

4.37

4.36

4.53

4.31

4.30

4.29

4.34

4. '33

4.30

4.31

4.31

4.29

4.27

18, 380

-620

-239

July

4.26

4.25

4.25

4.24

4.23

4.28

4.27

4.26

4.30

4.29

4.28

4.26

4.28

4.33

4.54

4.34

4.34

4.33

4.32

4.32

4.31

4.51

4.29

4.29

4.50

4.26

4.26

4.24

4.19

4.16

4.15

18,140

-24O

-89.6

Aug.

4.14

4.11

4.08

4.07

4.06

4.05

4.03

4.01

4.00

3.99

3.96

3.95

3.93

3.91

3.88

3.88

3.87

3.86

3.86

3.85

3.84

3.83

3.81

3.77

3.74

3.71

5.69

3.67

5.66

5.65

3755

17,120

-1.C20

, -381

Sept.

3.63

3.63

3.65

3.64

3.62

3.61

3.61

3.59

3.57

3.55

3.50

3.49

3.48

3.45

3.45

3.46

3.48

3.45

3.45

3.46

3.45

3.42

3.44

3.57

3.56

3.57

3.56

3.54

5.53

3.52

16,880

-240

-92.6

Water year 1955-56. ................... * +1,470 tt +46.5

t Contents, In millions of cubic feet, at 12 p.m. on last day of month.

* Change in contents, in millions of cubic feet.

tt Change in contents, equivalent In cubic feet per second.

Note. Qage-heights for period Jan. 1-22 computed on basis of records for station at Lalceport.
83 MERRIMACK RIVER BASIN

Lake Winnipesaukee Outlet at Lakeport, N. H.

Location. Lat 43°32 I 55", long 71°27 I 55", 100 ft upstream from highway bridge across 

Paugus Bay at Lakeport, Belknap County.

Drainage area.--363 sq mi.

Records available.--January 1860 to December 1911 (monthly gage heights only), June 1933 

to September 1956.

Gage. Water-stage recorder, Keeler deflection meter, and measuring flume. Datum of gage 

~~is 500.55 ft above mean sea level, datum of 1929. January 1860 to December 1911 staff 

gage at site 150 ft downstream at same datum. June 1, 1933, to Sept. 30, 1936, staff 

gage and continuous-recording current meter at same site and datum. Oct. 1, 1936, to 

May 23, 1944, discharge computed from flow over spillway and through gates and wheels 

at site 150 ft downstream.

Average discharge. 23 years, 543 cfs (adjusted for storage).

Extremes. Maximum daily discharge during year, 1,690 cfs June 5; minimuir daily, 165 cfs 

Apr. 7.

1933-56: Maximum daily discharge, 2,890 cfs Mar. 31, 1936; minimuir daily, 20 cfs 

Dec. 6-19, 1941, Dec. 22, 1941, to Jan. 19, 1942.

Remarks.--Records good except those below 250 cfs, which are fair. Flow completely reguTaTed by Winnipesaukee (see preceding page), Wentworth, Merrymeeting (see p. 109 ), 

and other lakes. Daily discharge computed from relation between discharge, stage, and 

deflection of vane in measuring flume.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

g

7

8

9

10

11

12

13

14

15

16

17

18

1920 

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

510 

500

565 540"

330

245

250

*460

280

265

240

235

265

230

235

245

245

215

210

215

220

220

240

245

225

225

215

215

*240 

230

230

8,785

283

-14.9

Nov.

225

230

225

260

245

265

235

240

240

230

265

260

270

235

240

240

245

225

260

270

235

24O

215

275

315

470

525

510 

500

8,405

280

+92.6

Dec.

505 

510

445

460

525

505

585

685

815

910

900

925

970

*1.140

1,130

1,030

945

930

955

925

920

710

450

250

260

260

265

230

225 

225

235

19,825

640

-426

Jan.

260 

260

445

515

510

515

470

510

330

205

215

220

530

1,100

1.290

915

250

240

245

250

*250

300

310

315

260

270

685

975

965 

1,010

980

15,595

503

+594

Feb.

r geo 

980

970

960

950

990

885

1,200

1,370

1,370

1,370

1,350

1,340

1,340

1,350

1,400

1,380

1,340

1,320

1,400

*1 , 530

*1 . 580

1,560

1,550

865

880

1,570

1,540

1,520

 

36,840

1,270

-651

Mar.

1.490 

1,470

1,420

1,440

1,470

1,450

1,450

1,440

1,420

1,390

1,350.

1,390

1,370

1,370

1,370

1,370

*1,210

1,260

1,310

1,280

1,250

1,250

1,050

595

605

655

625

675

515 

190

210

35,340

1,140

-396

Apr.

190 

220

190

180

185

185

165

215

215

195

190

195

200

265

205

235

220

220

225

220

250

270

250

265

240

240

245

220

280 

295

 

6,670

222

+1,709

May

270 

270

270

275

240

350

275

300

455

485

*665

785

810

835

815

810

965

*1,070

1,060

1,060

1,090

925

930

795

445

255

510

1.120

1,110 

1,080

1,100

21,425

691

+448

June

1,100 

1,100

1,090

1,510

*1.690

1,670

1,570

1,380

1,190

1,190

*1,240

1,210

940

790

565

350

355

390

385

370

360

350

340

355

370

350

345

335

340 

500

--"" 

23,630

788

-239

Juiy

320 

350

310

300

370

335

295

345

370

295

295

305

265

270

335

360

310

305

305

300

285

335

330

330

*335

340

435

565 m380

10,680

345

-89.6

Aug.

375 

370

355

350

350

355

300

280

295

285

295

350

370

295

290

305

300

255

285

340

310

300

300

*300

285

395

445 400"

400 

395

340

10,270

331

-381

Sept.

295

250

405

480

420

385

415

*400

425

480

445

440

435

425

480

455

555

380

295

295

285

300

275

345

300

*300

300

295

310

280

11,150

372

-92.6

Adjusted for change In reservoir contents

Mean 

Cfsra

In.

268 

0.738 

0.85

373 

1.03 

1.1E

Calendar year 1955: 

Water year 1955-56:

214 

0.590 

0.68

1,097 

3.02 

3.48

620 

1.71

1.84

744 

2.05 

2.36

Observed

1,931 

5.32 

5.94

1,139 

3.14 

3.62

Max 1,860 Min 175 Mean 622 

Max 1,690 Min 165 Mean 570

548 

1.51 

1.69

255 

0.702 

0.81

-49.5

-0.136 

-0.16

279 

0.769

0.86

Adjusted

Mean 525 Cfsm 1.45 In. 19.65 

Mean 616 Cfsm 1.70 In. 23.12

* Discharge measurement made on this day, 

t Change in contents, equivalent in cubic feet per second, in Lake Winnipesaukee. 

Note. Negative figures of adjusted discharge and runoff indicate that evaporation and seepage 

from reservoir exceeded inflow.
MERRIMACK RIVER BASIN 83

Winnlpesaukee River at Tilton, N. H.

Location. Lat 43°26'30", long 71°35'15", on right bank at Tilton, Belknap County, 

0.3 mile upstream from Packer Brook.

Drainage area. 471 sq mi.

Records available. January 1937 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 441.87 ft above mean sea level, unadjusted.

Average discharge. 19 years, 709 cfs.

Extremes.--Maximum discharge during year, 1,940 cfs June 5, 6 (gage height, 5.93 ft); 

minimum daily, 250 cfs Dec. 31, Jan. 1,2.

1937-56: Maximum discharge, 3,810 cfs Sept. 21, 1938 (gage height, 7.90 ft), from 

rating curve extended above 2,100 cfs on basis of computation of peak flow over dam; 

maximum gage height, 7.93 ft Mar. 27, 1953; minimum daily discharge, 48 cfs Aug. 31, 

1941.

Remarks. Records excellent except those for periods of ice effect, which are good. Flow 

regulated by powerplants and by Winnipesaukee (see p. 81), Winnisquam, Merrymeeting 

(see p. 109), and other lakes above station.

Rating tables, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to May 28 May 29 to Sept. 30

3.0 

3.5 

4.0 

5.0 

6.0

217

405

630

1,190

1,900

3.0 

3.5 

4.0 

5.0 

6.0

253

437

1,250

2,000

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

 <3

11

12

13'4

"5

'6

 7

 8

'9

20

21

122 '23

24'25

'26

'27

128 

129 "0

"1

"total

"ean

Cfsm "n.

Oct.

317

321

476

705

740

462

357

345

329

314

302

302

298

298

298

287

302

302

302

298

295

287

287

283 2S"3

287

287

287 

287 

287

 341

10,566

341

-

"

Nov.

321

302

295

317

417

385

357

353

353

389

433

369

365

365

401

441

445

437

429

417

405

413

405

397

405

405

544

660 5~fO" 

*576

12,391

413

-

-

Dec.

585

580

553

571

580

576

571

605

725

735

932

938

926

926

938

956

956

956

962

945

930

920

620

540

510

510

600

470 

340 

270

250

21,476

693

-

-

Jan.

750" 250

260

*290

300

305

310

345

490

89O

1,230

1,200

1,230

1,240

1.380

1,320

655

440

420

481

435

421

413

410

400

370

357

540 

890

*1,030

1,040

19,592

632

-

-

Feb.

1,040

1,040

1,040

1.04O

1,040

1.030

1,050

1,040

1,080

1,280

1,300

1,300

1,290

1,290

1,290

1,290

1,320

1,350

1,340

1,310

1,290

1,310

1,330

1,340

1.360

1,300

*1,17Q

1,320 

1,340

35,520

1,225

-

-

Mar.

1,350

1,370

1,370

1,400

1,420

1,420

1,430

1.440

1,430

1,430

1,420

1,400

1,400

1,400

1,4OO

1,390

1,410

1,390

1,380

1,380

1,370

1,370

1,360

1,290

1,110

1,010

968

879 

*765 

760

608

39, 520

1,275

-

"

Apr.

413

526

544

558

585

665

745

735

675

665

710

770

824

852

852

974

1,340

1.560

1,420

1,300

1,260

1,240

1,230

1,160

1,000

835

926

962 

1,090

1,200

27,616

921

-

-

May

1,100

*980

932

914

920

884

770

625

585

540

401

381

401

445

504

620

735

944

1,050

1,110

1,160

1,040

1,020

1,000

802

373

5T50"

1,320 

1.540

1,470

1,440

26,506

855

-

"

June

1,360

1,120

1,190

*1,520

1,930

1.940

1,910

1,880

1,770

1,560

1,360

1,060

1,030

1,020

787

356

323

305

293

294

294

298

305

309

305

312

*316

*338 

342 

334

26,166

872

-

"

July

327

323

327

383

410

410

449

441

390

330

330

327

338

437

498

481

481

477

469

465

461

461

421

319

309

*309

305

m301

305

11,886

383

-

"

Aug.

301

298

298

301

301

301

301

312

323

312

309

309

305

305

305

305

3O5

305

316

309

305

305

305

*301

305

387

437

m437

371

10,156

328

-

-

Sept.

312

309

4O2

445

528

537

383

309

375

519

528

528

515

334

294

342

457

323

294

215

301

294

301

402

379

349

 334

330 

330 

323

11,375

379

-

-

Calendar year 1955: Max 1,850 Mln 250 Mean 726 Cfsm - In. -

Water year 1955-56: Max 1,940 Mln 250 Mean 691 Cfsm - In. -

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Dec. 20 to Jan. 10, Jan. 18, 19, 21, 24-26, 28, 

»eb. 22, Mar. 25.
84 MERRIMACK RIVER BASIN

Merrimack River at Franklin Junction, N. H.

Location. Lat 43°25'25", long 71°39'10", on right bank at Franklin Junction, Merrimack 

County, 1 mile downstream from confluence of Pemigewasset and Winnip?saukee Rivers.

Drainage area. 1,507 sq mi.

Records available.--July 1903 to September 1956.

Gage. Water-stage recorder. Datum of gage is 250.4 ft above mean sea level, unadjusted. 

Prior to Sept. 13, 1923, chain gage at bridge 350 ft downstream at same datum.

Average discharge.--51 years (1905-56), 2,805 cfs.

Extremes. Maximum discharge during year, 16,400 cfs Apr. 30 (gage height, 13.21 ft); 

minimum daily, 452 cfs Aug. 18.

1903-56: Maximum discharge, 83,000 cfs Mar. 19, 1936 (gage height, 36.4 ft, from 

floodmarks), from rating curve extended above 30,000 cfs on basis of slope-area determination and computation of flow over dam at gage height 29.5 ft, an! velocity-area 

study; minimum daily, 225 cfs Oct. 23, 1948.

Remarks. Records excellent except those for periods of Lee effect, which are good, and 

those for periods of no gage-height record, which are fair. Flow reflated by powerplants, by Franklin Falls Reservoir since 1942, and by Squam, Little Squam, Newfound, 

Winnipesaukee, Winnisquam, Wentworth, Merrymeeting, and other lakes. See pages 81 and 

109 for description and month-end contents of many of these reservoirs.

Revisions (water years). WSP 401: 1913 calendar year. WSP 641; 1923(M). WSP 756: 

Drainage area. WSP 781: 1928(M). WSP 1231: 1911-13, 1916-17(M), 1919(M), 1922(M).

Rating table, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

3.5 

4.0 

5.0

420

735

1,630

7.0

10.0

13.0

4,270

10,100

16,100

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

757

960

1,100

1,280

1,270

1,310

1,590

1,650

1,780

1,620

1,090

1,040

1,000

1,140

580

891

1,500

1,810

1,660

1,720

1,150

BOO

1,160

1,240

1,160

1,310

1,300

1,160

903 

1,070

*2.180

39,181

1,264

0.839

O.97

Nov.

4,670

3,780

2,600

2,540

5,110

5.550

3,950

3,070

2,710

2,540

2,480

2,230

2,060

2,120

2,180

2,190

2,380

2,510

2,170

2,000

1,590

1,770

1,680

1.470

1,620

1,550

1,610

1,780

1,880

*1, 650

75,240

2,508

1.66

1.86

Dec.

1.800

1,700

1,250

1,570

1,700

1,740

1,600

1,500

1,640

1,190

1,780

1,700

1,700

1,700

1,750

1,700

1,600

1,650

1,650

1,600

1,500

1,3OO

1,200

800

1,100

1,050

1,250

1,150

950

46O

43,980

1,419

0.942

1.09

Jan.

720

800

850

910

920

920

560

920

2,500

8,200

9.7OO

4,410

5,370

6,760

9,OOO

9,020

5,540

2,940

2,230

1,940

1,650

1,910

1,840

1,720

1,790

1,770

1,470

980

1,940

2,000 1 930

93,210

3,007

2.OO

2.30

Feb.

2,OOO

2,040

2,000

1,700

1,880

1,960

2,110

2,200

2,280

2,450

2,090

2,190

2,290

2,40O

2,380

2,370

2,330

1,700

2,320

2,480

2,290

2,150

2,180

2,200

1,880

2,180

2,190

*2,560

2.710

63,510

2,190

1.45

1.57

Mar.

2.500

2,300

1,820

2,350

2,470

2,480

2,470

2,360

2,350

1,800

2,260

2,390

2,450

2,370

2,470

2,370

1,720

2,200

2,400

2,380

2,360

2,360

2,360

1,680

1,900

2,030

2,000

1,980

*1,860

1,760

 

67,139

2,166

1.44

1.66

Apr.

1.240

1,640

1,870

1,680

2,480

3,300

5,350

5,500

4,370

3,820

3,82O

4,500

5,500

5,880

5,520

6,200

9,300

11,100

8,940

7,660

6,900

6,660

6,620

5,820

5,000

4,790

4,790

5,780

10,800 

15.000

171,830

5,728

3.80

4.24

May

15,900

*13,200

10,300

10,100

9,620

8,580

7,680

6,580

5,260

4,950

5,820

5,060

5,960

7,700

6,880

6,010

5,770

5,270

4,350

4,110

3,900

3,430

3,400

4,110

3,660

2.450

3,620"

13,000

12,500 

8, 08O

7,200

214,430

6,917

4.59

5.29

June

4,840

4,650

5,600 ni.ooo

9,660

7,440

5,710

4,880

4,410

4,060

3,580

2,850

2,860

2,770

2,430

1,630

1,430

1,390

1,430

1,250

1,120

1,230

642

1,180

1,330

1,480

1,390

*1,490

1,380 

517

95,629

3,188

2.12

2.36

July

1,230

949

1,060

971

971

1,180

1,070

1,250

1,680

4,770

3,400

2,300

1,840

4,850

9,000

5,320

3,690

3,190

2,550

1,950

1,700

1,550

1,600

1,700

1,700

1,550

1,500

1,000

1,200 

1,200

*1,250

69,171

2,231

1.48

1.71

Aug.

1,150

1,070

920

470

900

1,050 *928

928

978

993

458

934

1.270

896

906

906

807

452

808

779

833

937

867 *842

551

840

998

1,080

1,080

1,090 

1,050

27,771

896

0.595

0.69

Sept.

1,360

1,750

1,570

1,730

1,700

1,470

1,470

1,580

1,360

1,340

1,300

1,300

1,310

1,110

615

1,500

1,650

3,210

2,670

2,120

2,980

2,460

1,970

3,430

*5.040

3,350

2,360

2,220

1,920

1,530

59,375

1,979

1.31

1.47

Calendar year 1955: Max 14,400 Min 460 Mean 2,597 Cfsm 1.72 In. 23.40

Water year 1955-56: Max 15,900 Min 452 Mean 2,788 Cfsm 1.85 In. 25.21

* Discharge measurement made on this day.

Note. Ho gage-height record Dec. 12 to Jan. 3, July 20 to Aug. 1, Aug. 3-6, 26; discharge estimated on basis of weather records, recorded range in stage when available, and records for other 

stations in Merrimack River basin. Stage-discharge relation affected by ice Jan. 4-10, 28, Feb. 4, 

17, 22-24, Mar. 1, 9, 17-19, 25, and at times during period of no gage-height record December and 

January. Discharge in cubic feet per second per square mile and runoff in inches may not represent 

natural flow because of regulation.
MERRIMACK RIVER BASIN 85

Contoocook River at Peterboro, W. H.

Location. Lat 42°51'45", long 71°57'35", on left bank 1,100 ft downstream from milldam, 

1 mile south of Peterboro, Hillsboro County, and ij miles upstream from Nubanusit 

Brook .-

Drainage area. 68.1 sq mi.

Records available. July 1945 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 740 ft (from topographic map).

Average dlscharge. 11 years, 127 cfs.

Extremes. Maximum discharge during year, 2,050 cfs Jan. 10 (gage height, 5.66 ft); minimum daily, 3.6 cfs Sept. 11.

1945-56: Maximum discharge, 2,640 cfs Nov. 26, 1950 (gage height, 6.35 ft), from 

rating curve extended above 1,700 cfs by logarithmic plotting; minimum daily, 0.8 cfs 

Sept. 15, 16, 1953.

Flood in September 1938 reached a stage of about 15 ft, from information lv local 

residents.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair. Flow regulated by mill and reservoirs above station.

Rating table, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

0.8 

.9 

1.0 

1.2 

1.4 

1.7

3.6

6.0

9.2

20

36

71

2.0 

2.5 

3.0 

4.0 

5.0

124

257

440

900

1,540

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

a!9

all

a40

a50

a45

a8 5

a75

76

56

*50

37

40

41

58

1,220

1,080

1,100

846

596

426

300

211

188

205

188

180

188

241

125

144 

344

8,259

266

3.91

4.51

Nov.

347

282

227

356

864

568

426

362

300

219

260

307

311

408

408

362

*491

398

319

251

254

235

228

192

231

202

180

191

183

175

9,515

317

4.65

5.20

Dec.

168

T57

146

160

160

146

134

130

126

101

78

82

75

85

72

78

76

50

73

55

71

70

70

66

54

48

60

64

55

~SS 45 

2,815

90.7

1.33

1.54

Jan.

43

30

20

29

35

45

50

70

1,200

1.590

1,010

815

755

551

436

370

274

244

216

188

158

155

160

145

160

160

160

155

155 

*165

170

9,494

306

4.49

5.18

Feb.

170

160

150

140

135

150

105

125

105

105

90

105

95

100

80

76

74

64

78

95

90

95

100

94

90

120

97

120

100

3,108

107

1.57

1.70

Mar.

100

88

120

TI5

100

100

105

80

95

95

80

105

72

90

92

76

90

80

92

85

92

92

91

74

90

100

78

94

70

74 

94

2,809

90.6

1.33

1.53

Apr.

61

*102

88

134

193

294

347

264

278

257

274

326

370

398

426

620

870

730

686

658

578

654

640

547

503

507

479

723

1.410

1,340

14,757

492

7.22

8.06

May

996

755

663

614

573

507

468

*426

334

271

226

213

165

184

199

173

170

165

118

62

93

135

115

103

107

55

69

146

124

81

107

8,417

272

3.99

4.60

June

129

82

204

278

197

135

116

106

74

82

128

104

92

83

79

51

66

92

65

78

78

81

60

69 '92

86

77

88

81

£L

2,995

99.8

1.47

1.64

July

57

48

24

18

20

38

25

24

40

73

67

61

61

81

72

75

41

*31

16

6.6

10

23

35

27

5.0

25

4.7

31

20

50 

33

1,142.3

36.8

0.540

0.62

Auf.

29

28

~5.9 33

4.7

12

14

14

4.5

14

6.5

12

28

4.5

16

15

4.5

6.2

9.4

18

13

*4.5

10

17

5.4

7.6

IT

4.5

13

12

395.2

12.7

0.186

0.22

Sept.

5.5

12

15

25

4.3

16

27

9.5

14

26

IF" 3.6

25

15

12

28

52

32

26

24

22

12

18

96

102

*84

75

77

38 

55

962.9

32. 1

0.471

0.53

Calendar year 1955: Max 1,220 Mln 3.0 Mean 140 Cfsm 2.06 In. 27.96

Water year 1955-56: Max 1,410 Mln 3.6 Mean 177 Cfsm 2.60 In. 35.33

Peak discharge (base. 700 cfs). --Oct. 15 (7:30 p.m.) 1,680 cfs (5.2O ft); Nov. 5 (5:30 a.m.) 1,000

cfs (4.17 ft); Jan. 10 (1:30 a.m.) 2,050 cfs (5.66 ft); Apr. 16 (12 p.m.) 960 cfs (4.10 ft); Apr. 22

(7 p.m.) 730 cfs (3.68 ft); Apr. 29 (12:30 p.m.) 1,830 cfs (5.39 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records, recorded range In stage,

and records for Nubanusit Brook near Peterboro.

Note. Stage-discharge relation affected by Ice Dec. 12 to Jan. 9, Jan. 22-29, Jan. 31 to Mar. 6,

Mar. 8-31.
MERRIMACK RIVER BASIN

Nubanusit Brook near Peterboro, N. H.

Location. Lat 42°53'10", long 71°58'25", on left bank; lij miles downstream from Edward 

MacDowell Reservoir, 1.3 miles northwest of Peterboro, Hillsboro County, and li miles 

upstream from mouth.

Drainage area. 46.9 sq mi.

Records available.--October 1920 to September 1931, July 1945 to September 1956. October 

1920 monthly discharge only, published in WSP 1301.

Gage.--Water-stage recorder. Altitude of gage is 790 ft (from topographic map). Prior to 

Oct. 1, 1931, at site 550 ft downstream at different datum.

Average discharge.--22 years, (1920-31, 1945-56), 85.6 cfs.

Extremes.--Maximum discharge during year, 637 cfs May 7 (gage height, 4.34 ft); minimum 

daily, 8.5 cfs Jan. 2.

1920-31, 1945-56: Maximum discharge, 1,130 cfs Apr. 11, 1931 (gage height, 5.59 ft, 

site and datum then in use), from rating curve extended above 380 cfs; minimum daily, 

0.5 cfs Aug. 1, 1926.

Remarks. Records excellent except those for periods of ice effect, which are good. Plow 

regulated by mills, Nub an us it Lake, Edward MacDowell Reservoir since March 1950 (see 

p. 109), and other reservoirs above station.

Revisions (water years). WSP 561: 1921(M). WSP 1051: Drainage area.

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to May 6

0.8 

.9 

1.0 

1.2 

1.5

5.9 

9.2

2.0 

2.5 

3.0 

4.0 

5.0

105

182

281

535

860

0.9

1.0

May 7 to Sept. 30

12

16

1.2

1.5

Note. Same as preceding table above

1.5 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Cfsm

In.

Oct.

33

26

24

22

21

*27

70

92

86

69

53

43

37

45

50

35

52

205

458

544

538

529

529

517

348

131

91

69

58 

54

106

4,962

160

3.41

3.93

Nov.

177

196

191

193

174

370

478

378

233

199

144

157

172

191

186

210

*223

262

292

273

211

121

109

115

122

120

98

85

76

67

5,823

194

4.14

4. 62

Dec.

73

70

68

74

80

82

73

68

63

58

55

53

48

42

50

50

50

48

46

43

44

44

44

43

42

42

42

41

41

39

3_8_

1,654

53.4

1.14

1.31

Jan.

21

12~8.5

14

16

28

32

34

73

64

41

33

60

220

358

442

511

517

535

559

559

556

499

180

110

85

73

67

64

*65

67

5,903.5

190

4.05

4.68

Feb.

67

67

67

66

66

65

72

80

74

70

68

69

69

66

64

64

65

67

69

67

58

48

46

51

64

92

95

87

73

1,979

68.2

1.45

1.57

Mar.

*69

76

76

84

87

80

80

79

78

74

69

76

76

73

74

71

68

70

70

72

70

70

78

77

75

78

76

76

79

84

84

2,349

75.8

1.6?

1.86

Apr.

82

*84

97

113

149

195

233

245

233

235

223

221

229

250

268

308

292

490

538

535

529

499

481

450

395

279

288

295

50

44

8,330

278

5.93

6.61

May

189

505

619

616

613

613

619

*601

482

243

182

143

122

108

101

96

92

86

82

82

78

72

72

69

64

61

74

102

96

85

84

7,051

227

4.84

5.59

June

87

86

109

160

154

120

97

80

58

44

50

46

39

32

26

22

19

19

16

16

16

17

17

20

22

22

26

40

37

31

1,528

50.9

1.09

1.21

July

28

28

26

24

25

32

40

38

40

44

38

32

32

56

61

49

41

35

29

26

25

28

29

- *28

28

26

24

23

21

20

18

994

32.1

0.684

0.79

Aug.

23

16

18

17

17

17

17

17

17

17

16

19

26

2G

22

19

17

17

17

18

19

*23

25

22

20

18

17

15

*16

14

21

583

18.8

0.401

0.46

Sept.

18

20

25

22

17

16

26

25

20

16

14

*13TS"

16

18

26

41

40

36

31

30

26

24

54

72

56

41

32

28

24

842

28.1

0.599

0.67

Calendar year 1955: Max 544 Mln 5.9 Mean 95.8 Cfsm 2.04 In. 27.71

Water year 1955-56: Max 619 Mln 8.5 Mean 115 Cfsm 2.45 In. 33.30

Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 12-17, 20, 21, Dec. 26 to Jan. 14, Jan. 24 26, 28, 29, Jan. 31 to Feb. 5, Feb. ----- - _________ __ . _

Discharge in cubic feet per second per 

flow because of regulation.

14, Feb. 16 to Mar. 1, Mar. 5-13, 15-29, Mar. 31 to Apr. 2. 

quare mile and runoff in inches may not represent natural
MERRIMACK RIVER BASIN 87

North Branch Contoocook River near Antrim, N. H.

Location. Lat 43°04'55", long 71°58'40", on right bank at North Branch, 4 miles northwest 

of Antrim, Hillsboro County, and 6 miles upstream from mouth.

Drainage area. 54.8 sq mi.

Records available. August 1924 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 882.38 ft above mean sea level (levels by 

Corps of Engineers). Prior to Nov. 14, 1932, staff gage and Nov. 14, 1932, to Jan. 7, 

1941, float gage, at same site and datum.

Average discharge. 32 years, 101 cfs.

Extremes. Maximum discharge during year, 1,420 cfs May 1 (gage height, 5.86 ft); minimum, 

0.5 cfs Aug. 30.

1924-56: Maximum discharge, 5,000 cfs Mar. 19, 1936 (gage height, 9.30 ft, from 

floodmarks), from rating curve extended above 1,600 cfs on basis of slope-area determinations at gage heights 8.4 and 9.3 ft; minimum, 0.3 cfs Sept. 18, 1948, Aug. 5,6, 1955.

Remarks.--Records good except those for periods of ice effect or no gage-heiglnt record, 

which are fair. Flow regulated by Highland Lake and several ponds above station.

Revisions (water years). WSP 756: Drainage area. WSP 1231: 1925(M), 1926, 1927(M), 

1928, 1929-30(M), 1933-56, 1938-40, 1944.

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Jan. 1O Jan. 11 to Sept. 3O

0.3 

.4 

.6

4.7 

6.9

1.0 

1.5 

2.0 

2.5

32

73

129

203

Note. Same as following table above £.5 ft.

.3 

.6

1.0 

1.5

0.6

2.4

5.4

12

30

67

2.0 

2.5 

3.0 

4.0 

5.0 

6.0

123

203

304

580

985

1,500

Discharge, In cubic feet per second, water year October 1955 to September

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Cfsm

In.

Oct.

10

9.3

8.2

7.4

6.7

9.9

61

102

103

93

77

48

30

30

169

439

868

1.010

749

530

399

311

239

182

*159

151

161

162

138

122

226

6,610.5

213

3.89

4.49

Nov.

284

278

263

276

442

503

470

394

324

263

233

224

218

259

306

320

*351

322

286

247

214

180

155

143

132

120

118

103

96

92

7,616

254

4.64

5.17

Dec.

8273-

71

69

72

70

69

a65

60

56

53

50

47

45

*44

42

42

42

39

32

28

26

24

23

24

26

25

24

22 

22

Zl

1,388

44.8

0.818

0.94

Jan.

19

17

16

17

18

19

19

a25

150

500

74O

721

749

671

439

407

317

149

124

*11O

100

90

84

77

75

62

58

54

50 

50

50

5,977

193

3.52

4.06

Feb.

46

46

47

41

47

47

47

51

50

49

48

49

51

50

50

50

47

48

48

48

47

43

43

41

45

50

55

54

a50

1,388

47.9

0.874

0.94

Mar.

*50

50

50

55

.50

58

56

54

52

54

52

54

53

52

53

47

46

49

49

50

48

48

55

54

52

48

41

37

32 

28

2A

1,511

48.7

0.889

1.03

Apr.

21

*21

31

57

95

145

180

175

195

200

210

211

220

239

253

311

410

470

468

459

453

479

485

442

394

371

354

455

859

1.250

9,913

330

6.02

6.73

May

1.550

1,010

769

654

590

521

456

*399

351

315

282

245

158

120

87

58

6?

76

82

84

82

78

74

71

68

62

78

116

127 

124

118

8,644

279

5.09

5.87

June

116

116

184

267

265

255

196

155

124

108

103

*95

86

76

64

53

45

36

30

22

12

8.1

6.0

4.. 9

4.7

4.4

4.3

5.2

4.4

4.1

2,434.1

81.1

1.48

1.65

July

.4

.4

.3

.O

; .O

7.0

8.5

9.6

13

15

18

18

22

50

64

63

54

46

37

28

23

21

20

19

16

15

13

12

9.9

8.3 

6.3

638.2

20.6

0.376

0.43

Aug.

5.8

572

4.4

3.8

3.4

2.8

2.4

2.1

*2.0

1.9

2.2

2.0

1.9

1.8

1.5

1.3

1.1

.9

.8

.8

1.1

2.4

2.0

1.4

1.1

.9

.7

*.6

.6

.6

1.0

60.5

1.95

0.036

0.04

Sept.

1.9

2.0

4.9

2.8

2.0

2.5

10

14

18

23

23

23

23

20

15

14

14

16

14

14

12

11

9.6

22

31

49

56

41

31 

26

545.7

18.2

0.332

0.37

Calendar year 1955: Max 1,01O Mln 0.3 Mean 115 Cfsm 2.10 In. 28.46

Water year 1955-56: Max 1,330 Min 0.6 Mean 128 Cfsm 2.34 In. 31.72

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records, recorded Targe in stage, 

and appearance of recorder chart on adjacent days.

Note. Stage-discharge relation affected by ice Nov. 23, 26, 27, Nov. 29 to Dec. 2, Dec. 6, 7, 

Dec. 20 to Jan. 11, Jan. 20 to Mar. 29, Apr. 5-11. Discharge in cubic feet per second per square 

mile and runoff in Inches may not represent natural flow because of regulation.
88 MERRIKACK RIVER BASIN

Beards Brook near Hlllsboro, N. H.

Location. Lat 43°06'50", long 71°55'35", on right bank 300 ft upstrearr from bridge on 

 State Highway 9, 500 ft upstream from mouth, and l| miles west of Hlllsboro, Hlllsboro 

County.

Drainage area. 55.4 sq ml.

Records available. October 1945 to September 1956. October 1945 monthly discharge only, 

published In WSP 1301.

Sage. Water-stage recorder. Altxtude of gage Is 595 ft (from topographic map).

Average discharge. --11 years, 99.1 cfs.

Extremes. Maximum discharge during year, 1,500 cfs Apr. 30 (gage helgtt, 5.63 ft); mlnmU1945: 56° Maximum discharge, 2,070 cfs Nov. 26, 1950 (gage height, 6.59 ft), from 

rating curve extended above 1,200 cfs by logarithmic plotting; minimum, 1.1 cfs 

Oct. 3, 1948.

Remarks. Records good except those for periods of ice effect or no gage-height record and 

those below 5 cfs, which are fair.

Revisions (water years). WSP 1231: 1948.

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Jan. 9

1.3 5.4

1.5 11

1.7 19

Note. Same as 

following table 

above 1.7 ft.

Jan. 1O to Sept. 30

1.O8

1.1

1.2

1.3

1.4

1.5 

1.7

2.0 

2.3

19

2.O 

2.3 

2.6 

3.0 

4.O 

5.0 

6.O

44

89

167

308

705

1,180

1,720

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

10

10

8.5

7.6

7.2

7.8

48

62

42

30

22

18

16

19

217

409

616

588

*378

26O

184

127

93

82

87

89

79

69

63 

58

246

3,953.1

128

2.31

2.65

Nov.

371

249

184

20O

687

5O8

338

257

2O4

161

164

204

228

29O

338

26O

*345

286

218

ISO

150

13O

115

110

110

105

95

86

80

2s.

6,728

224

4.04

4.52

Dec.

68

60

62

65

72

68

65

61

57

54

51

48

47

*45

44

41

39

38

36

30

26

24

22

21

22

23

22

21

19 

20

19

1,290

41.6

0.751

0.87

Jan.

17

16

15

16

17

17

17

17

600

1.150

920

772

83O

584

420

290

195

155

125

*94

85

75

68

65

60

57

54

49

47 

47

47

6,921

223

4.O3

4.65

Feb.

44

43

43

39

42

42

42

44

45

44

42

43

44

45

44

44

43

42

42

42

42

38

38

36

38

43

il

45

43

1,229

42.4

0.763

O.83

Calendar year 1955: Max 687 Min 1.7

Mar.

*42

4142"

47

5j2

50

50

49

47

47

45

46

47

46

45

43

41

43

44

45

44

45

47

48

50

49

48

47

47 

46

47

1,430

46.1

0.832

0.96

Apr.

*52" 47

61

9O

125

230

32O

255

255

24O

257

308

364

39O

386

496

656

669

616

516

496

520

508

397

352

375

345

579

1,220

1.580

12,505

417

7.53

8.59

May

1,O3O

648

516

456

428

356

3O1

*253

207

19O

190

167

155

143

127

114

104

91

82

79

70

66

64

66

60

52

105

252

164

119

102

6,755

217

3.92

4.52

June

89

93

258

444

271

184

129

98

79

75

10O

*86

68

51

42

38

40

32

26

25

20

20

18

17

17

15

14

17

15

13

2,392

79.7

1.44

1.61

July

12

11

9.9

8.9

8.9

16

26

22

25

52

24

22

22

68

50

35

27

21

17

14

13

15

13

14

12

9.9

8.6

7.4

6.6

6.0

5.6

59O.8

19.1

0.545

0.40

Aug.

*5~7o~ 5.5

4.6

4.5

4.5

4.2

3.8

4.0

*5.8

5.2

2.7

2.8

2.8

2.7

2.5

2.4

2.5

2.2

2.2

2.4

3.1

4.2

5.8

3.3

3.0

2.8

2.5

*2.4

2.1

5.7

100.7

3.25

0.059

0.07

Sept.

4.O

4.5

8.2

6.6

5.0

4.5

5.0

4.5

4.O

5.5

5.2

475

14

9.3

23

26

31

35

26

22

24

2O

16

54

12

42

29

22

20

15

555.2

18.5

0.334

0.37

Mean 100 Cfsm 1.81 In. 24.51

Water year 1955-56: Max 1,380 Min 2.1 Mean 121 Cfsm 2.18 In. 29.84

Peak discharge (base, 910 cfs). Jan. 10 (time unknown) about 1,300 cfs; Apr. 30 (1 to 2 p.m.) 

1,500 cfs (5.63 ft).

* Discharge measurement made on this day.

Note. No gage-height record Nov. 20 to Dec. 14, Aug. 11, 15-27; discharge estimated on basis of 

1 discharge measurement, weather records, recorded range in stage, and records for Warner River at 

Davisville and North Branch Contoocook River near Antrim. Stage-discharge relation affected by ice 

Dec. 15 to Jan. 11, Jan. 13, Jan. 17 to Mar. 26, Apr. 2-10, and during part of period of no gageheight record in November and December.
MERRIMACK RIVER BASIN 89

Cintoocook River near Henniker, N. H.

Location. Lat 43°09'10", long 71°51'25", on right bank 1.6 miles downstream from Sand 

Brook and 2.2 miles southwest of Henniker, Merrimack County.

Drainage area. 368 sq mi.

Records available.--October 1939 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 475 ft (from topographic map). Prior 

to Dec. 18, 1939, staff gage at same site and datum.

Average discharge. 17 years, 646 cfs.

Extremes. Maximum discharge during year, 7,180 cfs May 1 \gage height, 12.05 ft); minimum daily, 42 cfs Aug. 27.

1939-56: Maximum discharge, 8,710 cfs June 26, 1944 (gage height, 13.13 ft); minimum daily, 19 cfs Oct. 29, 1940.

Maximum discharge known, 22,200 cfs Sept. 21, 1938 (gage height, 21.3 ft, from 

floodmarks), from rating curve extended above 7,500 cfs on basis of computations of 

flow over dams at gage heights 12.72 and 21.3 ft.

Remarks. Records good except those for periods of ice effect, which are fair. Flow

regulated by powerplants and by Nubanusit Lake, Edward MacDowell Reservoir (see p. 109) 

since March 1950, Highland Lake, Jackman Reservoir, and other reservoirs abo-re station.

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Apr. 30 May 1 to Sept. 30

5.2 

5.5 

6.0 

7.0

170

234

371

750

8.0

9.0

10.0

12.0

1,350

2,270

3,690

7,100

4.2 

4.5 

5.0 

5.5 

6.0

129

220

340

7.0 700

8.0 1,320

9.0 2,270

10.0 3,690

12 .0 7 , 100

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

186

170

192

255

192

221

*268

279

234

241

293

213

276

294

698

2,340

4.170

4,030

*3,010

2,390

2,110

1,830

1,570

1,460

1,430

1,230

955

840

800

570 

1,010

33,757

1,089

2.96

3.41

Nov.

1,700

1,620

1,420

1,380

2,660

5,280

2,780

2,310

1,980

1,530

1,390

1,460

1,550

1,690

2,030

1,890

*2,040

2,130

1,840

1,580

1,430

1,300

1,150

1,080

1,060

1,050

972

933

900

755

48,890

1,630

4.43

4.94

Dec.

714

700

674

566

669

732

678

664

643

606

442

532

517

524

*532

500

355

335

450

460

450

430

380

310

290

305

310

300

300

305 

305

14,978

483

1.31

1.51

Jan.

290

285

280

280

285

290

290

300

900

3,200

6.000

4,936

4,390

3,460

2,740

2,310

1,940

1,590

1,480

*1,470

1,330

1,260

1,220

1,080

910

800

740

570

520

570 

640

46,350

1,495

4.06

4.68

Feb.

640

650

610

520

520

600

596

602

618

614

586

578

602

602

578

560

540

532

524

551

550

560

550

490

375

360

578

635

600

16,321

563

1.53

1.65

Mar.

*590

586

437

444

578

578

560

540

480

430

400

492

539

490

460

430

325

425

664

570

465

465

500

450

450

480

485

465

490

460 

393

15,121

488

1.33

1.53

Apr.

402

*454

520

631

865

1,270

1,740

1,690

1,530

1,550

1,680

1,800

2,040

2,210

2,280

2,570

3,420

4,010

3,800

3,460

3,280

3,270

3,560

3,100

2,670

2,540

2,320

2,680

4,490

6.560

72,392

2,413

6.56

7.32

May

6,690

5,020

4,030

3,630

3,380

3,090

2,850

*2,600

2,350

2,040

1,630

1,360

1,090

986

878

750

665

622

594

546

498

509

526

520

484

454

512

824

830

715 

606

51,279

1,654

4.49

5.18

June

638

800

938

1,720

1,560

1,210

878

755

690

562

*566

*634

427

343

349

373

328

205

280

280

268

260

244

210

157

178

195

218

220

214

15,680

523

1.42

1.58

July

190

108

92

87

78.

87

101

93

99

124

104

89

130

248

520

292

282

265

280

270

242

218

159

193

191

184

152

137

118

81

85

5,099

164

0.446

0.52

Aug.

88

*88

89

86

82

72

86

101

88

77

70

66

59

55

62

61

60

60

58

57

51

62

63

67

64

51

*42

47

59

65 

80

2,116

68.3

0.186

0.21

Sept.

96

79

77

67

75

86

103

94

84

86

125

132

142

142

111

111

190

217

2O6

200

205

132

114

227

518

256

285

265

203

180

4,608

154

0.418

0.47

Calendar year 1955: Max 4,170 Mln 60 Mean 739 Cfsm 2.01 In. 27.27

Water year 1955-56: Max 6,690 Mln 42 Mean 892 Cfsm 2.42 In. 33.00

* * Discharge Discharge measurement measurement made made on on this this day. day.

Note. Stage-discharge relation affected by ice Dec. 16 to Jan. 10, Jan. 18 to Feb. 6, Feb. 16, 

7, 21-26, 29, Mar. 1, 7-11, 14-18, 20-29. Discharge in cubic feet per second per square mile an 

unoff In inches may not represent natural flow because of regulation.
90 MERRIMACK RIVER BASIN

Warner River at Davisville, N. H.

Location. Lat 43°15'05", long 71°43 I 50", on left bank 60 ft downstream from highway bridge 

at Davisville, Merrimack County, 2-£ miles northwest of Contoocook, a'-id 2.4 miles upstream from mouth.

Drainage area. 146 sq mi.

Records available. October 1939 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 380 ft {from topographic map). Prior to 

Dec. 22, 1939, chain gage at bridge 60 ft upstream at same datum.

Average discharge. 17 years, 239 cfs.

Extremes. Maximum discharge during year, 2,360 cfs Apr. 30 {gage height, 8.00 ft); minimum, 11 cfs Aug. 28-31.

1939-56: Maximum discharge, 4,510 cfs Mar. 27, 1953 {gage height, 9.88 ft), from 

rating curve extended above 2,800 cfs by logarithmic plotting; mlniimm, 4.4 cfs Aug. 27- 

29, 1949.

Flood in September 1938 reached a stage of 12.8 ft, from information by local residents.

Remarks. Records excellent except those for periods of ice effect, which are good. Prior 

to 1948, slight diurnal fluctuation at low flow caused by mill above station.

Rating tables, water year 1955-56, except periods of iee effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Jan. 13 Jan. 14 to Sept. 30

3.5 27

3.8 56

4.2 115

4.6 203

5.0 333

6.0 780

7.0 1,460

3.2

3.3 

3.6 

4.0 

4.5

9.6

14

35

84

190

5.0 348

6.0 780

7.0 1,460

8.0 2,360

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

34

34

34

34

11

32

94

130

110

89

75

62

56

50

172

353

415

487

440

*361

293

256

240

220

220

220

203

188

173

176

5,608

181

1.24

1.43

Nov.

581

545

466

423

952

1,120

913

755

640

545

496

514

509

491

522

*500

568

572

496

432

386

345

303

293

293

269

245

231

215

205

14,825

494

3.38

3.78

Dee.

185

164

166

169

180

180

170

164

149

142

128

*124

123

117

119

112

106

106

101

79

70

66

61

59

62

65

62

60

55

56

54

3,454

111

0.760

0.88

Jan.

49

44

43

45

48

50

50

50

190

760

1,140

1,100

1.450

1,290

1,030

*813

660

560

500

390

340

300

260

230

230

185

172

155

140

140

140

12,554

405

2.77

3.20

Feb.

125

127

129

110

125

123

123

132

129

129

127

129

13E

129

129

130

120

123

125

*127

121

110

111

105

T13

127

140

138

127

3,615

125

0.856

0.92

Mar.

123

127

127

142

154

149

145

140

135

138

129

136

134

132

134

119

113

T25

123

129

123

123

140

136

132

*140

136

129

129

132

132

4,106

132

0.904

1.05

Apr.

134

140

170

204

290

451

630

648

594

590

640

755

913

988

994

1,160

1,510

1,620

1,580

1,430

1,320

1,300

1,320

1,190

1,040

1,100

919

1,080

1,710

2,26O

28,580

953

6.53

7.28

May

2.140

1,710

1,420

1,220

1,100

968

841

730

635

*568

532

488

451

413

380

352

330

306

287

267

245

233

218

218

198

190

265

617

576

467

424

18,789

606

4.15

4.79

June

380

369

420

775

740

604

488

394

330

300

*330

310

267

227

190

168

156

136

121

105

94

91

82

78

72

68

65

69

62

56

7,547

252

1.73

1.92

July

53

49

44

41

38

52

86

75

70

81

69

70

69

178

T75

136

113

101

78

65

57

57

60

57

52

49

45

42

36

33

31

2,162

69.7

0.477

0.55

Aug.

*28

26

25

25

23

19

20

21

21

21

20

18

18

16

16

15

14

14

14

16

17

17

17

16

15

15

*13

11

TT

11

12

545

17.6

0.121

0.14

Sept.

13

TT

20

19

19

18

22

24

21

19

18

19

19

22

41

44

53

74

64

61

75

64

54

124

175

138

98

78

65

56

1,534

51.1

0.350

0.39

Calendar year 1955: Max 1,120 Min 11 Mean 241 Cfsm 1.65 In. 22.45

Water year 1955-56: Max 2,260 Min 11 Mean 282 Cfsm 1.93 In. 26.33

Peak discharge (base, 1.200 cfs). Nov. 6 (1 to 2 a.m.) 1,200 cfs (6.66 ft); Jan. 13 (6 to 7 p.m.) 

1,560 efs (7.12 ft); Apr. 18 (4 a.m.) 1,670 cfs (7.25 ft); Apr. 30 (2 to 5 p.m.) 2,360 cfs (8.00 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 27, Nov. 29 to Dec. 1, D?e. 6, 7, 20, Jan. 9- 

13, 17-25, 28, 29, 31, Feb. 1, 4, 16, 17, 22, Mar. 7-9, 16, 18, 21, 22.
MERRIMACK RIVER BASIN 91

Blackwater River near Webster, N. H.

Location. Lat 43°17'50", long 71°41'40", on left bank 0.2 mile west of Dingit Corner, 

2f miles southeast of Webster, Merrimack County, and 6f miles upstream from mouth.

Drainage area. 129 sq mi.

Records available. May 1918 to September 1920, February 1927 to September 1956. Published 

as near Contoocook 1918-20, 1927-35. Records published for both sites October 1934 

to September 1935.

Gage.--Water-atage recorder at present site since Oct. 1, 1934. Altitude of gage is

430 ft (from topographic map). Prior to Oct. 1, 1935, chain gage at site 5 miles downstream at different datum.

Average discharge. 31 years (1918-20, 1927-56), 217 cfs (adjusted to present site).

Extremes. Maximum discharge during year, 2,130 cfs May 4 (gage height, 6.89 ft); minimum, 

22 cfs Aug. 18, 19; minimum daily, 22 cfs Aug. 19.

1918-20, 1927-56: Maximum discharge, 11,000 cfs Mar. 19, 1936 (gage height, 11.78 

ft, from floodmarks), from rating curve extended above 6,700 cfs on basis of slope-area 

and critical-depth determinations of peak flow; minimum, 3 cfs Sept. 17, 1941 (gage 

height, 1.20 ft); minimum daily, 10 cfs Aug. 14, 1950.

Remarks. Records excellent except those below 50 cfs and those for periods of ice effect, 

which are good, and those for periods of no gage-height record, which are fair. High 

flow regulated by Blackwater Reservoir since 1941 (see p. 109 ). Some regulation at 

low flow prior to 1953 by mill above station.

Revisions (water years). WSP 696: Drainage area. WSP 821: 1936(M). WSP 851: 1936. 

 WSP 867: 1936 (flood-report data). WSP 1231: 1919-20, 1927, 1928(M), 1929-32, 1933- 

34(M), 1936 (calendar year summaries).

Rating table, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

2.0 

2.2 

2.5 

3.0 

3.5

36

63

135

241

4.0 

4.5 

5.0 

6.0 

7.0

381

550

790

1,420

2,230

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7 

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

58

55

52

49

44

42

66 

115

*143

118

99

82

72

63

66

118

196 

274

322 

275

2O 9

166

133

116

110

115

116

114

1O6

99

177

3,77O

122

0.946

1.O9

Nov.

394

526

498

410

518

784

m484

381

334

322

334

*328

328

319

334 

346

316 

265

232

214

192

185

185

181

162

150

141

III

1O,739

358

2.78

3.10

Dec.

128

116

121

118

130

b!20

b95 

bllO

116

106

100

b93

b92

89

89

85

81 

86

81 

64

a58

a55

a52

a50

53

54

53

51

50

50

IS.

2,594

83.7

0.649

0.75

Jan.

47

45

44

45

46

48

48 

49

100

59

59

70

75

b!70

b600

bl,200

1.850 

1,730

a480 

a300

a240

a200

a!75

154

139

13O

121

116

109

108

106

8,643

279

2.16

2.49

Feb.

1O3

103

103

19

102

104

104 

110

109

109

108

1O8

110

130

144

144

143 

146

144 

144

139

*130

130

121

123

126

133

133

126

3,528

122

0.946

1.02

Mar.

121

123

120

125

150

126

123 

121

118

120

118

116

116

115

115

112

102

T&TT

115 

109

1O9

109

110

112

109

109

108

104

103

*1O3

103

3,530

114

0.884

1.02

Apr.

103

Toe

12O

143

187

288

419

504

522

508

512

562

645

740

774

796

935 

1,090

1.180 

1,180

1,120

1,O40

965

935

823

740

7 2O

720

911

411

19,701

657

5.09

5.68

May

80

680

1,570

1.91O

2.050

1,94O

1,750 

1,02O

578

*484

445

435

397

365

340

311

286

270

251 

232

216

2OO

189

185

178

166

2O6

487

834

851

522

19,428

627

4.86

5.60

June

429

394

423

640

869

*752

512 

394

325

288

297

291

243

203

174

154

141 

126

116 

108

102

99

93

89

86

85

82

82

82

11

7,758

259

2.01

2.24

July

72

63

59

56

53

61

79 

90

89

9O

93

88

85

152

211

205

156 

133

114 

92

79

73

73

75

72

71

71

67

60

55

52

2,792

90.1

0.698

O.80

Aug.

*49

46

43

42

41

41

41

40

38

37

35

39

32

26

25

25

24 

23

22 

23

26

30

*31

30

29

27

25

25

24

27

989

31.9

O.247

O.29

Sept.

33

48

77

S4

85

81

85 

82

77

73

71

68

66

67

63

62

64

82

90 

89

84

82

76

114

211

*243

172

12O

96

81

2,726

90.9

0.7O5

0.79

Calendar year 1955: Max 1,07O 

Water year 1955-56 : Max 2,05o

Mln 

Mln

Mean 212 

Mean 236

1164

1.83

In. 22.35 

In. 24.87

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records, recorded range In stage 

when available, and records for Warner River at Davlsvllle and Smith River near Bristol, 

b Stage-discharge relation affected by Ice.
MERRIMACK RIVER BASIN

Contoocook River at Penacook, N. H.

Location. Lat 43°17'10", long 71°36'00", on right bank at Penacook, Merrimack County, 

half a mile upstream from mouth.

Drainage area.--766 sq mi.

Records available.--October 1928 to September 1956. 

published in WSP 1301.

ctober 1928 monthly discharge only,

Gage.--Water-stage recorder. Datum of gage is 273.09 ft above mean sea level, datum of 

1929.

Average discharge.--28 years, 1,278 cfs.

Extremes.--Maximum discharge during year. 10,200 cfs May 1 (gage height, 6.37 ft); maximum 

gage height, 7.14 ft Jan. 11 (ice jam); minimum discharge, 89 cfs Aug. 27; minimum 

daily, 103 cfs Aug. 29.

1928-56: Maximum discharge, 46,800 cfs Mar. 20, 1936 (gage height, 14.26 ft, from 

floodmarks); minimum, 44 cfs Oct. 20, 1950; minimum daily, 81 cfs Aug. 19, 1950.

Remarks. Records excellent except those for periods of ice effect, which are fair. Flow 

regulated by mills and by Nubanusit Lake, Edward MacDowell Reservoir since March 1950, 

Highland Lake, Jackman Reservoir, Blackwater Reservoir since 1941 (see p. 109 ), and 

other reservoirs above station.

Revisions (water years). WSP 756: 1933(M), drainage area. WSP 1231: 1929, 1931.

Rating table, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.4 95

159

252

450

3.0 

4.0 

5.0 

7.0

1,540

3,400

5,820

12,700

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

ZO

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf sm

In.

Oct.

370

318

337

337

357

337

466

611

602

548

5O6

506

421

450

732

2,260

4,160

4.960

4,400

*3,490

2,900

2,540

2,230

2,000

1,930

1,810

1,560

1,320

1,210

1,140

1 350 '

46,158

1,489

1.94

Z.24

Nov.

2,760

3,080

2,800

2,540

3,960

5i500

5^390

4,590

3,750

3,060

2,680

2,670

2,780

*2,840

3,210

3,170

3,340

3,490

3,210

2,780

2,460

2,250

2,020

1,860

1,830

1,760

1,640

1,570

1,480

1 25O ' 

85,720

2,857

3.73

4.16

Dec.

,170

,160

,160

,130

,040

.200

,030

,060

,020

950

890

*770

840

840

864

840

720

680

740

740

680

640

600

520

510

520

520

500

490

490

490

24,804

800

1.04

l.ZO

Jan.

470

460

450

440

450

450

460

470

1,000

3,500

6,400

6. 880

6,680

6,050

4,930

*4,640

4,490

4,150

3,510

2,450

2,100

1,950

1,850

1,800

1,700

1,400

1,150

1,000

9ZO

960

74,036

2,388

3.12

3.59

Feb.

960

1.000

960

900

840

850

900

920

948

960

936

91Z

960

940

948

950

940

940

910

*960

900

910

910

900

800

700

790

1,000

950

26,494

914

1.19

1.29

Mar.

950

950

924

828

920

990

974

974

920

900

790

804

860

888

860

770

700

670

900

1,000

830

800

880

840

820

*820

850

840

*830

7HO

26,714

862

1.13

1.30

Apr.

740

800

912

1,090

1,450

2 , 200

3,230

3 , 470

3,250

3,270

3 , 530

3,890

4,420

4,830

4,980

5-, 420

6,480

7 , 420

7,360

6,850

6,400

6,170

6,290

6,040

5,340

4,930

4,610

4,780

6,570

.ii 9  

050

135,772

4,526

5.91

6.59

May

9.960

*8,570

*7,540

6,940

6,740

6,290

5,770

5,000

3,980

3,490

3,060

2,700

2,360

2,140

1,950

1,800

1,590

1,460

1,380

1,310

1,210

1,140

1,140

1,140

1,100

1.000

1,160

2,190

2,570

2,520

2,070

101,270

3,267

4.27

4.92

June

1,740

1,830

2,050

*3,210

5.620

3,150

2 , 480

1,960

1,680

1,490

1,430

1,480

1 , 300

1,000

888

816

792

700

566

602

584

557

539

498

458

392

428

443

466

435

37,584

1,253

1.64

1.82

July

428

399

293

237

247

270

324

357

357

364

377

344

311

519

780

*792

690

620

566

530

498

474

435

384

399

384

364

324

287

264

212

12,830

414

0.540

0.62

Aug.

198

198

189

193

193

172

176

168

198

189

168

152

152

144

119

117

119

119

122

117

119

133

*133

133

137

137

106

111

103

TTT

122

4,548

147

0.192

0.22

Sept.

148

189

212

207

242

264

293

217

168

172

202

237

270

305

351

276

337

435

466

443

450

414

331

443

710

*792

650

602

506

428

10,760

359

0.469

0.52

Calendar year 1955: Max 5,500 Min 129 Mean 1,395 cfsm 1.82 In. 24.70

Water year 1955-56: Max 9,960 Min 103 Mean 1,603 Cfsm 2.09 In. 28.47

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 30 to Dec. 2, Dec. 6-14, Dec. 16 to Jan. 11, 

Jan. 18, 20-29, Jan. 31 to Feb. 6, Feb. 8, 14, Feb. 16 to Mar. 2, Mar. 5, 6, 9-11, 13, 15-29, 

Mar. 31 to Apr. 2, Apr. 5, 6.
MERRIMACK RIVER BASIN

Soucook River near Concord, N. H.

Location. Lat 43°14 I 22", long 71°27'44", on left bank 500 ft upstream from U. S. Highway 

4, 0.9 mile upstream from Cemetery Brook, and 4.4 miles northeast of State Capitol at 

Concord, Merrimack County.

Drainage area.--76.8 sq mi.

Records available.--October 1951 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 290 ft (from topographic map).

Average discharge. 5 years, 131 cfs.

Extremes.--Maximum discharge during year, 1,410 cfs Apr. 17 (gage height, 10.£0 ft); minimum, 5.9 cfs Oct. 5, 6.

1951-56: Maximum discharge, 2,380 cfs Apr. 6, 1952 (gage height, 12.35 ft); minimum, 3.3 cfs Sept. 22-24, 1955.

Remarks. Records good except those for periods of ice effect or no gage-heigrt record, 

which are fair.

Revisions (water years). WSP 1331: 1952(M).

Rating tables, water year 1955-56, except periods of ice effect (gage height, 

in feet, and discharge, in cubic feet per second)

Oct. 24 to Apr. 17 Apr. 18 to Sept. 30

4.2

4.4 

4.8

6.5

14

36

4.5 

5.0 

5.5 

6.0

21

58

106

166

7.0 

8.0 

9.0

10.0

11.0

4.14 6.3

1,210

1,650

4.2

4.5

5.0 58

Note. Same as 

preceding table 

above 5.0 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tota]

Mean

Cfsm

In.

Oct.

9.0

9.4

8.3

7.2

5.9

6.2

32

36

29

22

17

14

13

11

17

22

23

30

29

23

20

18

16

*15

16

*17

17

16

15

15

M

593.0

19.1

0.249

0.29

Nov.

104

77

60

60

201

193

134

112

95

81

86

115

106

100

104

*93

179

157

117

99

88

80

70

73

71

63

62

60

58

52

2,950

98.3

1.28

1.43

Dec.

51

44

48

52

55

55

46

47

38

38

33

31

29

*27

28

29

29

27

26

20

19

18

16

15

15

15

15

14

14

14

i£

921

29.7

0.387

0.45

Jan.

13

12

11

12

12

13

13

13

100

430

390

300

390

400

270

200

160

*125

115

110

100

92

86

76

72

68

66

65

64

64

62

3,904

126

1.64

1.89

Feb.

58

58

58

56

63

63

70

70

67

63

58

59

60

60

60

60

56

57

58

60

59

*58

55

52

55

58

62

61

58

------

1,732

59.7

0.777

0.84

Mar.

56

58

5a

64

68

66

64

62

61

60

58

58

56

54

54

50

52

60

58

56

56

56

60

62

60

62

62

58

56

*56

56

1,817

58.6

0.763

0.88

Apr.

56

64

80

100

160

280

424

404

358

360

409

515

622

680

635

868

1.330

1,190

906

698

608

578

560

520

466

426

407

429

578

780

15,491

516

6.72

7.50

May

653

471

384

341

347

297

260

223

*192

193

198

176

165

152

146

137

133

122

114

108

98

93

90

92

82

75

161

475

297

222

195

6,692

216

2.81

3.24

June

167

175

245

443

332

*236

182

147

135

125

131

109

93

82

70

62

56

47

42

38

36

36

35

38

35

31

28

30

29

26

3,241

108

1.41

1.57

July

24

25

21

19

18

26

40

32

30

39

29

23

23

80

66

44

37

31

26

*23

21

21

21

20

19

18

16

15

14

13

12.

846

27.3

0.355

0.41

Aug.

12

11

10

9.7

9.7

9.2

9.2

10

12

11

9.7

8.4

7.6

7.6

7.3

7.0

7.6

8.4

7.0

6.6

8.8

14

*11

9.7

8.8

8.0

7.3

6.6

6.6

6.3

7.6

275.7

8.89

0.116

0.13

Sept.

23~9.7

50

23

16

14

22

20

14

12

10

10

9.7

10

30

27

40

59

42

40

51

39

32

136

131

*85

63

51

45

42

1,156.4

38.5

0.501

0.56

Calendar year 1955: Max 520 Min 3.3 Mean 87.7 Cfsm 1.14 In. 15.51

Waber year 1955-56: Max 1,33O Min 5.9 Mean 108 Cfsm 1.41 In. 19.19

Peak discharge (base. 700 cfs).--Apr. 17 (5:30 to 8:30 a.m.) 1,410 cfs (10.50 ft); Ap-. 30 (3:30 

to 4:30 p.m.) 867 cfs (9.12 ft).

* Discharge measurement made on this day.

Note. No gage-height record Dec. 24 to Jan. 8, Jan. 26 to Mar. 6; discharge estimated on basis of 

1 discharge measurement, weather records, and records for Suncook River at North Chichester and 

Warner River at Davisville. Stage-discharge relation affected by ice Nov. 26, 27, Dec. 5-23, Jan. 9- 

25, Mar. 7 to Apr. 6.
MERRIMACK RIVER BASIN

Suncook River at North Chichester, N. H.

Location. Lat 43°15'25", long 71°22'10", on left bank at North Chichester, Merrimack 

County, 3.1 miles upstream from Little Suncook River.

Drainage area.--157 sq mi.

Records available. --May 1918 to September 1920, June 1921 to November 1927, November 1928 

to September 1956.

Gage . --Water-stage recorder. Concrete control since Sept. 14, 1937. Datucr of gage is 

329.35 ft above mean sea level, adjustment of 1912.

Average discharge. --35 years (1918-20, 1921-27, 1929-56), 244 cfs.

Extremes . --Maximum discharge during year, 2,610 cfs Apr. 17 (gage height, ?.89 ft); maximum gage height, 12.98 ft Jan. 10 (ice jam); minimum discharge, 10 cfs Oct. 3; minimum 

daily, 11 cfs Oct. 3.

1918-56: Maximum discharge, 12,900 cfs Mar. 19, 1936 (gage height, 15.27 ft, from 

f loodmarks) , from rating curve extended above 4,800 cfs on basis of slope-area and 

contracted-opening determinations of peak flow; minimum, 0.4 cfs Sept. A, 1926; minimum 

daily, 1.4 cfs Sept. 4, 1926.

Remarks. --Records good except those for periods of ice effect, which are frir. Plow regulated by mills and reservoirs above station; regulation greater prior to 1949.

Revisions (water years). WSF 781: 

1933-34JM).

1923(M). WSP 1231,: 1919(M), 1920, 1922, 1924(M),

Rating table, water year 1955-56, except periods of ice effect (gag,; 

height, in feet, and discharge, in cubic feet per second)

2.5

2.6 

2.8 

3.1 

3.4 

3.7

8.2

13

26

60

114

197

4.0 

4.5 

5.0 

7.0 

9.0 

10.0

310

540

700

1,210

2,020

2,700

Discharge, in cubic feet per second, water year October 1955 to Septembe- 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

18 

12

11

22

23

23

38

38

43

47

74

79

74

72

131

155

152

191

166

131

119

106

97

*99

108

101

95

89

82

 225

2,705

87.3

0.556

0.64

Nov.

360 

302

232

216

508

518

400

298

240

204

222

266

262

247

247

*228

441

382

282

243

214

188

170

166

166

150

140

138

130

140

7,700

257

1.64

1.82

Dec.

115

112

110

116

128

130

115

108

99

93

88

82

78

*74

76

72

68

68

68

54

48

45

44

42

43

41

40

37

36

36

35

2,301

74.2

0.473

0.55

Jan.

32 

28

27

29

31

32

32

36

800

1.900

1,700

1,300

1,700

1,760

1,300

945

765

*630

560

450

380

340

320

260

240

190

180

160

145

150

145

16,567

534

3.40

3.92

Feb.

130 

130

135

120

140

140

155

155

150

140

130

135

140

135

135

135

125

125

130

130

125

115

115

*110

TTF

130

145

140

130

3,840

132

0.841

0.91

Mar.

130

130

130

150

160

155

150

145

140

140

135

135

135

130

135

120

12S

140

125

130

125

130

140

140

135

140

140

130

130

135

140

4,225

136

0.866

1.00

Apr.

140 

T50

170

220

350

550

770

760

692

685

748

875

1,060

1,190

1,150

1,590

2.440

2,240

1,940

1,770

1,600

1,520

1,470

1,320

1,150

1,070

1,050

1,100

1,300

1,840

32,910

1,097

6.99

7.80

May

1.740 

1,290

1,040

915

868

770

672

587

500

*495

486

425

396

355

328

278

286

270

247

232

214

194

204

214

163

133

296

782

660

459

355

15,854

511

3.25

3.76

June

290 

282

341

651

615

500

*391

314

262

255

259

225

188

160

138

116

106

93

80

72

69

68

62

66

70

63

66

66

60

j>5

5,983

199

1.27

1.42

July

57

53

5«- 5~>

50

64

8>

63

73

J59

133

97

83

131

12 ! 

91

8*

Aug.

44 

44

42

36

38

43

*40

39

37

38

32

32

35

'29

29

25

25

74 24

63 21

6? 24

5<5 27

5f 28

6* »26

5- 25

55 24

5" 20

54, 2T

4" 23

4« 22

50 22

45 25

2,264 940

73.0 30.3

0.465 0.193

O.E4 0.22

Sept.

25 

35

93

54

35

31

37

27

26

29

31

27

26

32

46

54

80

106

70

69

80

60

57

264

IsT

163

Ufa

97

77

70

2,171

72.4

0.461

0.51

Calendar year 1955: Max 1,050 Min 7.4 Mean 198 Cfsm 1.26 In. 17.13

Water year 1955-56: 1955-56: Max 2,440 Min 11 Mean 266 ___Cfsm Cfsm1.69 In. 23.095 ____

Peak discharge (base. 1.500 cfs).--Jan. 10 (time and discharge unknown); Jan. 13 (11 to 12 p.m. 

1,940 cfs (8.85 ft); Apr. 17 (9 to 10 p.m.) 2,610 cfs (9.89 ft)) Apr. 30 (6 to 7 p.m.) 2,000 cfs 

(8.97 ft).

* Discharge measurement made on this day.

Note,--Stage-discharge relation affected by ice Nov. 23, 26, 27, Nov. 29 to Dec. 1, Dec. 6, 7, 

Dec. J.1 to Jan. 13, Jan; 18 to Apr. 8.
MERRIMACK RIVER BASIN 95

South Branch Piscataquog River near Goffstown, N. H.

Location.--Lat 43°00'50", long 71°38'30", on right bank 20 ft upstream from highway bridge, 

1.4 miles upstream from mouth, and 2.2 miles west of Goffstown, Hillsboro County.

Drainage area.--104 sq mi.

Records available.--July 1940 to September 1956.

Gage..--Water-stage recorder. Altitude of gage is 310 ft (from topographic map).

Average discharge.--16 years, 171 cfs.

Extremes. Maximum discharge during year, about 2,750 cfs Jan. 10; maximum gage height, 

10.69 ft Jan. 9 (ice ,1am); minimum discharge, 7.9 cfs Aug. 29-31.

1940-56: Maximum discharge, 4,100 cfs June 25, 1944 (gage height, 9.47 ft); maximum 

gage height, 11.18 ft Mar. 20, 1948 (ice jam); minimum discharge, 3.0 cfs Sept. 22, 

1941.

Remarks.--Records good except those for periods of ice effect, which are fair, 

ulation at low flow by mill above station.

Rating table, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Some reg3.7

4.0 

4.5 

5.0 

6.0 

8.0

120

247

425

950

2,500

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf sm

In.

Oct.

23

21

24

26

24

23

72

79

63

51

39

34

31

32

704

1,080

1.290

1,030

547

363

273

217

179

163

*161

154

140

124

116 

109

722

7,914

255

2.45

2.83

Nov.

660 

453

338

453

1.680

1,030

605

465

389

330

366

449

450

594

650

483

830

*660

478

393

341

306

266

263

260

232

211

200

185

i£^

14,185

473

4.55

5.07

Dec.

150

140

140

150

170

175

T45

135

120

120

90

90

86

90

*9S

90

82

76

74

62

53

50

49

47

49

51

49

47

43

45 

42

2,808

90.6

0.871

1.00

Jan.

38 

35

34

35

37

39

40

48

900

2.400

1,640

1,390

1,440

980

655

496

381

320

275

240

*200

165

145

130

120

115

110

105

98

105

100

12,816

413

3.97

4.58

Feb.

96 

94

92

86

94

90

120

165

170

T50

140

150

160

165

160

155

145

120

140

135

120

110

105

110

125

160

150

145

*135

3,787

131

1.26

1.35

Mar.

130 

130

130

150

185

170

155

150

145

130

120

125

125

120

120

115

110

115

115

120

145

150

155

140

130

125

120

120

115

120 

*115

4,095

132

1.27

1.46

Apr.

115 

130

160

203

318

496

640

501

453

483

510

590

700

836

866

1,190

1,710

1,470

1,310

1,120

1,080

1,120

1,110

854

758

794

734

1,050

1,840

2.150

25,291

843

8.11

9.04

May

1.470 

968

794

700

620

510'

*441

378

327

296

266

238

220

200

186

173

166

154

142

142

134

124

118

116

106

99

148

260

189

149

138

9,972

322

3.10

3.57

June

124

113

277

474

273

211

156

*128

107

104

116

100

82

73

68

59

58

60

50

45

42

41

39

37

37

34

34

42

39

34

3,057

102

0.981

1.09

July

31 

28

27

37

28

39

60

52

60

60

46

36

35

69

15

56

43

34

28

25

24

25

27

28

25

22

20

19

17

17

17

1,110

35.8

0.344

0.40

Aui?.

tf

13

13

13

13

12

12

11

*10

10

10

11

1111

11

12

12

11

9.9

9.9

9.9

9.4

9.4

9.4

9.0

8.6

*3,6

8,2

7 Q

J-ijl

10

333.2

1O.8

0.104

0.12

Sept.

12 

14

19

17

14

10

12

15

14

13

12

11

11'

12

12

15

28

32

34

23

20

18

19

56

13

47

34

26

22

19

664

22.1

0.212

0.24

Calendar year 1955: Max 1,680 Min 4.3 Mean 179 Cfsm 1.72 In. 23.36

Water year 1955-56: Max 2,400 Min 7.9 Mean 235 Cfsm 2.26 In. 30.75

Peak discharge (base. 1.000 cfs). Oct. 17 (8 to 11 p.m.1 1.420 cfs (6.71 ft); Oct. 51 (4 to 5 p.m.) 

1,080 cfs (6.21 ft); Nov. 5 (9 a.m. to 12 m.) 1,850 cfs (7.26 ft); Jan. 10 (time unknown) about 

2,750 cfs; Apr. 17 (6 to 9 p.m.) 1,740 cfs (7.13 ft); Apr. 30 (11 a.m. to 12 m.) 2,330 cfs (7.81 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 13, Nov. 29 to Jan. 10, Jan. 18 to Apr. 3.
96 RCTSR BASIN

Piscataquog Rlvei- ' <->ic Goffstown, N. H.

Location. Lat 43 0 01'001 ", long 71°33'00", on left bank 300 ft upstream from highway bridge, 

0.2 mile upstream from Harry Brook, 0.4 mile southwest of Grasmere, and 2.5 miles east 

of Goffstown, Hillsboro County.

Drainage area. 202 sq mi.

Records available. Octdber 1939 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 185 ft (from topographic map). Prior 

to Dec. 22, 1939, staff gage at same site and datum.

Average discharge. 17 years, 316 cfs.

Extremes. Maximum discharge during year, 3,800 cfs Apr. 30 (gage height, 8.75 ft)- minimum daily, 6.0 cfs Oct. 9.

1939-56: Maximum discharge, 6,760 cfs June 15, 1942 (gage height, 10.79 ft), from 

rating curve extended above 4,400 cfs on basis of computations of flow over dam at 

gage heights 16.03 and 17.52 ft; minimum daily, 4.8 cfs July 26, 1955

Maximum: discharge known, 21,900 cfs Sept. 21, 1938 (gage height, 17.52 ft, from 

floodmarks), by computation of flow over dam. Flood of Mar. 19, 1936, reached a discharge of 19,900 cfs, by computation of flow over dam.

Remarks. Records excellent except those below 100 cfs and those for periods of ice effect 

or no gage-height record, which are good. Plow regulated by powerplant above station.

Rating table, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

2.9

3.1

3.6 

4.0

76

153

4.5 

5.0

5.5 

6.0 

7.0 

8.0 

9.0

296

496

745

1,090

1,940

2,940

4,110

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7a

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Cfsm

In.

Oct.

18

25

32

34

35

36

244

136

6.0

31

7.2

34

37

131

586

1,400

1 , 590

1,460

a 70

651

*402

377

217

374

326

274

238

122

42 

119

779

10,633.2

343

1.70

1.96

Nov.

1,090

787

701

590

2,500

1,880

1,150

831

693

6B7

696

690

690

1,010

1,180

864

1,270

1,090

799

701

582

602

646

372

527

425

355

437

275 

253

24,173

B06

3.99

4.45

Dec.

261

210

216

229

305

273

240

229

203

163

11

234

183

203

179

250

a. e

62

232

210

145

70

9.8

9.8

60

54

110

108

87 

35

50

4,640.2

150

0.743

0.85

Jan.

62

46

80

60

94

35

54

90

620

3,000

2,700

2,600

2,650

2,000

1,250

940

760

620

510

436

360

300

3BO

345

310

170

221

165

15

264 

197

21,334

6BB

3.41

3.93

Feb.

205

285

134

64

139

210

275

227

333

259

36

118

300

235

267

180

260

145

160

340

380

^7

150

105

239

120

265

285

360

-------

6,113

211

1.04

1.13

Mar.

250

245

59

180

3B6

409

399

375

374

*11

60

370

320

285

140

170

45

10

370

280

200

170

190

170

10

340

190

170

160

155 

145

6,638

214

1.06

1.22

Apr.

89

415

292

421

502

650

690

869

857

8B4

962

1,140

1,330

1,540

1,600

2,110

3,030

2,620

2,350

1,980

1,870

1,900

1,910

1,550

1,360

1,380

1,290

1,620

2,810

3, 560

43,581

1,453

7.19

8.02

May

2,710

1,830

1,460

1,250

1,110

933

*820

718

696

575

479

370

391

378

306

359

284

299

192

127

291

263

245

237

124

58

380

505

155

355

17,978

580

2. 87

3.31

June

248

103

541

763

751

483

328

324

49

144

279

212

229

202

122

38

9.0

126

99

84

61

85

7.9

7.9

76

100

90

128

90

7 . 6

5,7B7.4

193

0.955

1.07

July

39~7.2

29

B.2

45

124

41

27

145

135

154

100

19

133

69

108

99

41

61

61

7.6

60

9.4

8.6

32

37

8.6

58

47

8 . 6 

8.6

1,730.8

55.8

0.276

0.32

Aug.

22

56

9.0

37

8.6

9. S

32

9.8

15

36

8.6

8.2

*8.6

~9.0 40

9.0

10

35

9.8

23

9.8

36

10

10

9.0

9.8

9.4

*33

11

10 

40

564.4

18.2

0.090

0.10

Sept.

35

28

10

10

24

11

36

10

9.4 3B~

11

39

39

11

9.4

16

73

71

66

66

39

9.8

9.8

87

181

103

60

66

56

9.8

L.234.2

41.1

0.203

0.23

Calendar year 1955; Max 2,300 Min 4.8 Mean 304 Cfsm 1.50 In. 20.42

Water year 1955-56: Max 3,560 Min 6.0 Mean 395 Cfsm 1.96 In. 26.59

* Discharge measurement made on this day.

Mote. No gage-height record Dee. 30 to Jan. 19, Mar. 10-31; discharge estimated on basis of 

2 discharge measurements, weather records, recorded range in stage when available, powerplant records, and records for South Branch Piscataquog River near Goffstown. Stage-discharge relation affected by ice Dec. 16, 17, 20-22, 25-28, Jan. 21, 22, 24-26, 28, 29, Feb. 1, 2, 4, 6, 13, 14, 16, 

17, 19-24, Feb. 26 to Mar. 3.
MERRIMACK RIVER BASIN

Merrimack River near Goffs Palls, below Manchester, N. H.

Location.--Lat 42°56'55", long 71°27'45", on right bank 0.8 mile downstream from Bowman 

Brook, 1.3 miles north of Goffs Palls, Hillsboro County, and 2.3 miles -dowrstream from 

Piscataquog River-.

Drainage area. 3.092 sq mi.

Records available.--October 1936 to September 1956. October 1936 monthly discharge only, 

published in WSP 1301.

Gage. Water-stage recorder. Altitude of gage is 105 ft (from topographic map). 

Average discharge.--20 years, 5,417 cfs.

Extremes.--Maximum discharge during year, 34,300 cfs May 1 (gage height, 11.55 ft); minimum daily, 492 cfs Aug. 19.

1936-56: Maximum discharge, 102,500 cfs Sept. 23, 1938 (gage height, 2f.87 ft), 

from rating curve extended above 48,000 cfs on basis of computations of flew over dam 

at gage heights 25.87 and 35.19 ft; minimum daily, 154 cfs Sept. 5, 1949.

Maximum discharge known, 150,000 cfs Mar. 20, 1936 (gage height, 35.19 ft, from 

floodmarks), from rating curve extended above 48,000 cfs by method explained above.

Remarks. Records excellent except those for'periods of no gage-height record, which are 

good. Flow regulated by powerplants, by Franklin Falls Reservoir since 1942, and by 

Squam, Newfound, Winnipesaukee, Winnisquam, and other lakes and reservoirs above station. See pages 81andl09 for description and month-end contents of many of these reservoirs .

Revisions (water years).--WSP 1231: 1937. WSP 1271: 1937(M,m).

Rating table, water year 1955-56 (gage height, In feet, and 

discharge, In cubic feet per second)

2.0 

2.5 

3.0 

3.5 

4.0

454

725

1,110

1,630

2,360

5.0

6.0

9.0

12.0

4,780

8,200

22,000

36,400

Discharge, In cubic feet per second, waber year October 1955 to September

Day

1

2

3

4

5

6

7

8

9

10

11 

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

26

29

30

31

Total

Mean

Cfsm

In.

Oct.

754

762

1,730

1,420

1,610

*2,050

2,530

2,750

2,500

1,900

1,960 

1,500

1,630

2,170

2,700

3,440 

6,100

8.120

7,620

6,760

5,750

4,460

3,630

3,790

3,800

3,650

3,250

3,410

2,760

1,770

3, 960

100,676

3,246

1.05

1.21

Nov.

6,940

6,960

7,670

6,720

10,300

14.800

13,100

10,600

6,640

7,520

7,120 

6,900

6,760

7,120

7,460

7,550 

6,320

6,760

7,900

7,190

6,070

5,400

*5,270

4,620

4,690

4,150

4,290

4,140

4,290

5.670

217,540

7,251

2.35

2.62

Dec.

2,640

3,510

3,460

3,020

4.580

3,570

3,480

3,660

3,250

3,280

2,630 

3,010

3,160

3,420

3,200

3,210 

2,540

2,490

2,900

2,700

2,500

2,300

2,100

2,200

1.200

1,800

1,900

1,900

1,700

1,600

1,350

64,660

2,731

0.883

1.02

Jan.

900

1,250

1,500

1,400

1,600

1,550

1,500

1,300

4,500

12,000

19.000 

16,500

17,000

18,000

17,000

16,500 

15,000

11,000

8,600

7,080

6,070

4,690

5,270

4,660

4,420

4,170

3,690

3,000

2,700

3,500

3,700

219,250

7,073

2.29

2.64

Feb.

3,600

3,600

3,700

3,300

3,300

3,500

3,700

3,900

4,000

4,100

4,000 

3,600

4,000

4,100

4,200

4,100 

4,000

3,900

5.000

4,400

4,100

3,300

3,500

5,400

4,300

3,200

3,620

4,130

*j4.900

111,050

5,829

1.24

1.54

Mar.

4,130

4,200

3,840

3,770

4,220

4,420

4,500

4,590

3,910

3,730

5,350 

4,190

4,170

4,170

4,030

4,150 

2.510

2,890

4,620

5,960

4.640

4,170

4,110

4,110

2,650

3,810

3,750

3,700

3,550

5,060

3,160

119,640

3,866

1.25

1.44

Apr.

2,240

3,460

3,970

4,150

5,210

7,500

11,100

13,200

12,000

11,200

11,400 

12,800

15,100

17,100

17,300

16,600 

24,500

26,700

27,000

25,500

21,500

20, 100

20,000

19,100

16,800

15,400

14,700

14,800

20,100

29.400

461,950

15,400

4.98

5.56

May

55 . 500

30,700

24,500

21,900

21,000

19,400

*17,600

15,700

13,100

11,300

11,000 

10,500

9,550

10,800

11,000

9,950 

9,000

8,700

7,670

6,830

6,140

5,750

5,620

5,750

6,070

5,530

5.110

11,000

17,800

14,800

11,600

398,850

12,870

4.16

4.60

June

9,710

7,760

8,880

13,900

17.200

14, 400

11,200

6,920

7,590

7,010

6,720 

5,760

5,340

5,020

4,640

4,100 

2,520

2,780

2,550

2,150

1,970

2,080

2,570

814

1,960

2,190

2,240

2,500

2,080

1,680

167,674

5,596

1.61

2.02

July

1,020

1,870

1,660

1,230

1,510

1,610

2,070

1,370

2,510

5,500

5,040 

4,590

2,750

5,340

7,530

6.660 

577201

4,440

4,340

3,280

5,140

1,930

2,420

2,190

2,250

2,280

2,040

2,310

1.010

1,550

1, 620

90,400

2,916.

0.945

1.09

Aug.

1,550

1,520

*1,450

1,340

626

1,440

1,360

1,220

1,240

1,460

1,160 

522

1,490

1,480

1,370

1,110 

1,060

1,130

492

1,340

1,020

1,150

1,110

1,100

922

614

1,410

1,400

1,260

1 250

1 ,560

57,176

1,199

0.566

0.45

Sept.

1,600

1,470

1,940

1,680

2,060

2,030

2,050

2,060

1,560

1,690

1,570 

1,590

1,600

1,600

1,570

2,520"

3,010

3,740

3,600

3,040

3,060

2,650

3,430

4,570

5.790

4,650

5,750

2,780

2,150

75,955

2,552

0.619

0.91

Calendar year 1955: Max 19,900 Mln 397 Mean 5,012 Cfsm 1.62 In. 22.00

Water year 1955-56: Max 33,500 Mln 492 Mean 5,697 Cfsm 1.64 In. 25.10

Peak discharge (base. 22.000 efs). Apr. 16 (2:30 p.m.) 29,000 cfs (10.44 ft); May 1 (1 p.m.) 

34,300 cfs (11.55 ft).

* Discharge measurement made on this day.

Note. No gage-height record Dec. 19 to Jan. 19, Jan. 28 to Feb. 26; discharge estimated on basis 

of weather records, recorded range In stage, powerplant records, and records for Piscataquog River 

near Goffstown. Discharge In cubic feet per second per square mile and runoff In Inches may not 

represent natural flow because of regulation.
98 MERRIMACK RIVER BASIN

Clark Brook at Auburn, N. H.

Location. Lat 43°00'20", long 71°20'55", on left bank at Auburn, Rockingham County, 

0.4 mile upstream from Massabesio Lake.

Drainage area. 27.8 sq mi.

Records available.--January 1938 to September 19S6.

Gage.--Water-stage recorder and concrete control. Datum of gage is 252.60 ft above mean 

sea level (city of Manchester benchmark).

Average discharge.--18 years, 41.3 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 390 cfs Apr. 17, 18 (gage height, 2.18 ft); 

minimum, 0.3 cfs Aug. 30, 31, Sept. 9-12.

1938-56: Maximum discharge, 602 cfs Sept. 12, 1954 (gage height, 2.55 ft); no 

flow for all or part of each day, Oct. 5-8, 1939, Dec. 4, 1941, Aug. 12, 1955, caused 

by unusual regulation.

Remarks. Records good. Flow regulated by Tower Hill Pond (see p. 109). Some d-iurnal 

fluctuation prior to 1951 by mill above station.

Revisions (water years1.--WSP 891: 1939. WSP 921: Drainage area. WSP 1301: 1939(M).

Rating table, water year 1355-56 (gage height, In feet, and 

discharge, In cubic feet per second)

0.3 

1.0 

2.4 

4.9

0.9 

1.2 

1.5 

2.0 

2.5

139

305

570

ear October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

( + )

Oct.

18

16

14

12

11

11

16

20

22

19

15

13

9.2

5.9

19

39

48

61

56

42

37

*32

27

25

24

23

22

21

19

19

38

754.1

24.3

-1.90

Nov.

7O

70

60

56

85

108

104

93

81

73

78

86

89

96

104

100

114

118

104

93

86

79

*62

64

68

64

61

52

34

52

2,424

80.8

+ 7.01

Dec.

51

49

46

46

46

46

44

41

38

35

32

30

27

25

25

*24

22

22

21

19

a!7

a!6

a!5

aU

aT5

al7

a!6

21

20

19

19

878

28.3

-8.93

Jan.

17

16

16

15

T5

15

15

18

91

285

265

226

234

240

202

171

149

*132

116

108

102

94

89

84 '81

74

70

64

59

51

43

3,157

102

+5.39

Feb.

40

38

35

34

33

33

38

38

38

39

39

40

41IT

41

40

39

39

38

35

33

32

31

*30

3T

35

36

38

36

1,061

36.6

-1.44

Mar.

35

34

34

40

45

46

49

48

45

42

40

40

39

40

39

36

36

40

39

37

36

36

37

40

40

39

38

37

37

38

*37

1,219

39.3

0

Apr.

38

40

48

43

82

100

139

130

93

93

106

121

139

165

177

246

365

375

370

328

285

254

237

230

216

195

174

165

189

240

5,383

179

+31.3

May

262

230

160

100

91

96

91

84

*70

67

66

61

59

49

48

46

44

42

40

39

36

34

26

26

27

26

32

49

52

46

41

2,140

69.0

+1.65

June

37

42

53

91

93

78

61

*49

39

35

36

44

43

41

34

25

19

12

6.3

4.9

4.6

4.6

4.3

4.9

5.2

4.0

3.7

4.0

4.0

3.7

886.2

29.5

-2.06

July

3.5

2.8

2.4

2.2

2.0

2.8

4.3

5.1

11

15

14

11

9.2

14

16

14

12

9.2

7.1

5.5

4.3

4.0

3.7

3.5

3.5

3.0

2.6

2.2

1.7

1.5

1.4

194.5

6.27

0

Aug.

1.3

1.1

1.0

1.0

.9

.8

.7

.6

.6

.6

.6

.6

.6

.6

.5

.4

.5

1.1

.9

.8

.8

.8

.7

.6

.6

.5

.4

.4

.4

*.3

.4

21.1

0.681

-0.35

Sept.

0.5

.6

.9

.8

.6

.4

.6

.4

.3

.3

.3

.3

.4

.4

.6

.7

1.1

1.9

2.8

2.6

2.4

2.2

2.2

5.3

7.1

6.7

5.2

3.7

3.2

2.6

57.1

1.90

+0.36

Adjusted for change In reservoir contents

Mean

Cfsm 

In.

22.4 

0.806 

0.93

87.8 

3.16 

3.52

Calendar year 1955: 

Water year 1955-56:

19.4 

0.698 

0.80

107 

3.85 

4.45

35.1 

1.26 

1.36

39.3

1.41 

1.63

211 

7.59 

8.46

70.7 

2.54 

2.93

Observed

Max 121 Mln 0.5 Mean 40.7 

Max 375 Mln 0.3 Mean 49.7

27.5 

0.989

1.10

6.27 

0.226 

0.26

0.326 

0.012

0.01

2.27 

0.082 

0.09

Adjusted

Mean 38.2 Cfsm 1.37 In. 18.63 

Mean 52.2 Cfs-n 1.88 In. 25.54

Discharge measurement made on this day. 

t Change in contents, equivalent in cubic feet per second, In Tower Hill Pond.

a No gage-height record; discharge estimated on basis of weather records, recorded range In stage, 

and records for Suncook'Rlver at North Chlchester.
MRftlMACK RIVER BASIN 99

Souhegan River at Merrlmack, N. H.

Location.--Lat 42"51 I 25", long 71°30'30", on left bank at head of Atherton Palls, at 

Merriraack, Hlllsboro County, 1? miles upstream from mouth.

Drainage area. 171 sq mi.

Records available. July 1909 to September 1956.

Gage. Water-stage recorder. Dati of gage is 160.58 ft above mean sea level, uradjusted 

(levels by Corps of Engineers;. Prior to Apr. 12, 1911, staff gage at site 300 ft 

downstream at datum 0.38 ft lower. Apr. 12, 1911, to Oct. 14, 1913, chain gaj-e at 

present site and datum.

Average discharge. 47 years, 288 cfs.

Extremes. Maximum discharge during year, 6,760 cfs Oct. 16 (gage height, 10.30 ft), minimum, 22 cfs Aug. 30.

1909-56: Maximum discharge, 16,900 cfs Mar. 19, 1936 (gage height, 16.2 ft), from 

rating curve extended above 7,300 cfs on. basis of velocity-area studies and computation 

of flow over dam at gage height 12.78 ft; minimum, 13 cfs Sept. 9, 1926.

Remarks. Records excellent except those for periods of ice effect or no gage-height record, which are fair. Some diurnal fluctuation caused by mill above station.

Revisions (water years).--WSP 431: 1909-13 calendar years, 1914. WSP 726: Drainage 

 are?! WSP 781: T924(M). WSP 1231: 1914-I5(M), 1917(M), 1919-23(M), 1927-2£(M), 

1929, 1930-34(M).

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, In feet, and discharge, in cubic feet I

2.2 

2.4

2.6 

3.0 

3.5

90

176

330

4.0 535

5.0 1,080

7.0 2,650

9.0 4,900

10.0 6,300

2.05

2.1

2.2 

2.5 

3.0 

3.5

179

350

cond) 

to Sept. 30

4.0 

5.0 

7.0 

9.0 

10.0

570

1,120

2,650

4,900

6,300

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

1213"

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf Sltl

In.

Oct.

92

67

38

40

47

34

104

236

162

111

*122

109

100

101

1,410

5.650

3,170

2,990

1,500

942

702

562

441

409

405

381

373

337

309

261

1,060

22,245

718

4.20

4.84

Nov.

1,570

922

700

640

2.520

2,290

1,250

886

725

610

675

826

910

922

1,090

800

*1,120

1,050

750

610

570

550

476

440

578

408

546

530

354

275

24,753

824

4.82

5.38

Dec.

245

230

230

234

280

300

250

225

200

200

150

150

145

150

165

150

140

130

125

105

88

84

80

78

80

84

81

77

71

75

2°

4,670

151

0.885

1.02

Jan.

64

58

56

58

62

65

66

80

1,300

5.580

5,260

2,520

2,550

1,700

1,070

850

700

540

460

400

325

270

255

210

200

185

185

175

160

170

165

25,319

752

4.40

5.07

Feb.

155

155

155

145

T50

150

205

270

275

260

230

230

260

280

270

260

240

195

200

220

210

185

170

170

190

220

260

250

230

6,190

215

1.25

1.35

Mar.

220

215

210

240

505

280

255

250

235

220

190

210

210

205

200

190

180

195

190

195

240

245

260

235

210

210

200

200

195

215

200

6,805

220

1.29

1.48

Apr.

190

230

300

370

673

1,180

1,430

1,000

860

800

840

1,000

1,200

1,400

1,450

2,000

2,500

2,600

2,150

1,900

1,850

1,850

1,850

1,450

1,350

1,500

1,250

1,600

2,500

2j 900

41,975

1,599

8.18

9.15

May

2 . 800.

1,800

1,350

1,150

1,050

860

740

620

550

*490

471

400

370

535

510

290

280

260

250

240

250

210

200

200

180

122.

270

375

300

240

220

17,211

555

3.25

3.74

June

195

175

350

660

*700

450

350

260

220

180

200

214

190

165

145

130

120

110

105

105

85

80

78

71

71

70

68

132

103

96

5,858

195

1.14

1.27

July

85

75

62

53

50

59

82

88

90

152

115

71

57

73

109

90

100

85

65

48

48

54

57

56

*51

45

42

40

383-5

37

2,090

67.4

0.394

0.45

Aug.

35

32

33

32

34

30

30

29

30

29

28

28

28

28

34

28

27

26

26

26

26

27

26

26

26

25

24

24

23

23

25

868

28.0

0.164

0.19

Sept.

28

29

32

*52

30

30

32

30

29

28

27

26

28

2§

27

29

41

50

55

42

38

36

35

85

110

88

70

60

50

45

1,270

42.3

0.247

0.28

Calendar year 1955: Max 5,630 Min 18 Mean 328 cfsm 1.92 In. 26.07

Water year 1955-56: Max 5,630 Min 23 Mean 430 Cfsm 2.51 In. 34.20

Peak discharge (ba 2.250 cfs). --Oct. 16 (9 to 10 a.m.) 6,760 cfs (10.30 ft); Nov. 5 (9 to 10 

p.m.) 3,100 fs (7.45 ft); Jan. 10 (12 m. to 1 p.m.) 6,300 cfs (10.00 ft); Apr. 17 or 18 (time and

discharge unknown); Apr. 30 (time unknown) 3,210 cfs (7.56 ft).

* Discharge measurement made on this day.

Note. --No gage-height record Apr. 8 to ya.y 10, May 12 to June 11, June 13-19, Sept. 18-30; discharge estimated on basis of 2 discharge measurements, weather records, recorded range in stage, and 

records for farner River at Davisville and South Branch Piscataquog River near Goffstown. "-<= - 

discharge relation affected by ice Nov. 30 to Dec. 3, Dec. s t-n T ~- " *
100 MERRIMACK RIVER BASIN

North Nashua River near Leominster, Mass.

Location.--Lat 42 e 30'06", long 71°43'23", on right bank 1 1/3 miles upstream from Wekepeke 

Brook, 2f miles southeast of Leominster, Worcester County, and 6.1 miles upstream from 

confluence with South Branch Nashua River.

Drainage area.--107 sq mi.

Records available. September 1935 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 270.04 ft above mean se9 level, datum of 

1929.

Average discharge. 21 years, 198 cfs.

Extremes.--Maximum discharge during year, 8,870 cfs Oct. 15 (gage height, 10.80 ft), from 

rating curve extended above 3,400 cfs by logarithmic plotting; minimum, 24 cfs 

Sept. 14; minimum daily, 42 cfs July 4.

1935-56: Maximum discharge, 16,300 cfs Mar. 18, 1936 (gage height, 20.53 ft, from 

floodmarks), by computation of flow over dam; minimum, 11 cfs Aug. 29, 1948; minimum 

daily, 22 cfs Sept. 27, 1936.

Remarks. Records good. Flow regulated by mills above station. Discharge Includes flow 

diverted from 2.1 sq mi in Squannacook River basin to North Nashua River basin for 

municipal supply of Fitchburg.

Rating tables, water year 1955-56 (gage height. In feet, and discharge, In cubic feet per

second)

(Shifting-control method used Oct. 6-8, 12, 14, 15, 18-31; backwate- from debris 

Oct. 15-18, Sept. 27-30)

Oct. 1-31 Nov. 1 to Jan. 9 Jan. 10 to Sept. 30

1.7 

2.0 

2.5 

3.0 

3.5

90

150

221

319

4.0 

5.0

6.0 

7.0

8.0

47O 

1,010 

1,780 

2,830 

4,180

1.6 

2.0 

2.5 

3.0

108

183

295

4.0 

5.0 

6.0 

7.0

645

1,150

1,820

2,650

1.3 

1.5 

2.0 

2.5

33 3.0

51 4.0

119 6.0

215 7.0

350

740

1,890

2,670

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17 

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Cfsm

In.

Oct.

92 

70

71

70

67

133

332

183

132

*117

96

94

75

127

3,780

*4,000 

2,370 

1,540

843

613

485

383

326

315

337

300

273

228

187 

200

960

18,799

606

5.66

6.53

Nov.

629 

462

371

638

1,980

1,030

681

525

441

388

589

629

621

650

*597

497 

508 

413

347

315

308

272

246

237

248

203

187

202

181 

169

14,564

485

4.53

5.06

Dec.

158 

147

146

183

230

212

178

147

141

128

124

122

141

116

118

115 

102 

102

115

96

88

*85

89

79

53

93

102

85

88

91

80

3,790

122

1.14

1.32

Jan.

71 

69

87

90

88

85

84

101

2,050

2,620

1,720

1,190

1,020

745

566

483 

410

338

282

262

225

206

*213

193

187

169

177

158

147

185

187

14,408

465

4.35

5.01

Feb.

150

160

171

141

143

156

288

245

206

191

165

250

265

222

225

272 

235 

213

211

213

193

181

165

167

193

280

*242

228

204

5,975

206

1.93

2.08

Mar.

191 

202

273

406

357

302

615

452

335

299

282

344

302

296

296

255 

252 

255

258

252

262

280

302

293

268

265

252

250

250

268

268

9,182

296

2.77

3.19

Apr.

"354" 296 

399

479

*918

1,080

*950

668

610

606

718

790

875

950

930

1,340 

1.900 

1,480

1,210

1 , 000

880

830

855

750

672

630

574

546

1,260 

*1,490

26,040

868

8.11

9.05

May

1.000 

690

586

506

455

392

368

332

288

290

268

210

218

220

204

195 

183 

179

167

162

167

152

158

164

149

126

156

183

149 

128

173

8,618

278

2.60

3.00

June

213

189

565

702

384

262

204

173

141

143

169

136

143

154

124

97 

124 

116

101

91

93

95

82

67

90

69

75

91

75

.66

5,034

168

1.57

1.75

July

69 

65

47

42

6T

82

71

51

87

80

66

60

63

114

T7

31 

73 

*67

65

61

60

72

75

79

67

63

62

59

54 

46

61

2,090

67.4

0.630

0.73

Aug.

63 

61

62

58

52

50

67

64

61

66

63

54

56

77

66

63 

63

60

58

56

72

78

71

66

63

54

53

*62

60 

64

72

1,935

62.4

0.583

0.67

Sept.

67 

52

63

57

58

61

96

61

49

51

52

52

56

60

53

73 

81 

80

64

68

61

55

56

146

93

86

78

103

67 

55

2,054

68.5

0.640

0.71

Calendar year 1955: Max 4,000 Mln 37 Mean 232 Cfsm 2.17 In. 29.43

Water year 1955-56: Max 4,000 Mln 42 Mean 307 Cfsm 2.87 In. 39.10

Peak discharge (base, 1,000 cfs). Oct. 15 (1O p.m.) 8,870 cfs (10.80 ft); Cot. 31 (11 a.m.) 1,240

cfs (5.15 ft); Nov. 5 (6 a.m.) .. 2,430 cfs (6.76 . ft); Jan. 10 (4 a.m.) 3,720 cfs (8.10 . ft); Apr. 5

(8:30 p.m.) 1,360 cfs (5.16 ft); Apr. 17 (4:30 to 6 a.m.) 2,130 cfs (6.34 ft); Apr. 30 (ll a.m.) 

1,680 cfs (5.70 ft); June 3 (9 p.m.) 1,060 cfs (4.65 ft). 

* Discharge measurement made on this day.
MERRIMACK RIVER BASIN 101

Rocky Brook near Sterling, Mass.

Location. Lat 42°26 T 57", long 71°48 1 10", on right bank 150 ft dowiioweam from bridge on 

Beaman Road, 0.7 mile upstream from mouth, and 2^ miles west of Sterling, Worcester 

County.

Drainage area. 2.28 sq mi.

Records available.--October 1946 to September 1956.

Gage.--Water-stage recorder and concrete control. Altitude of gage is 505 ft (f-om topographic map).

Average discharge. 10 years, 3.93 cfs .

Extremes. Maximum discharge during year, 98 cfs Oct. 15 (gage height, 3.62 ft); minimum, 

0.04 cfs Aug. 7-9..

1946-56: Maximum discharge, 395 cfs Sept. 11, 1954 (gage height, 4.58 ft), from 

rating curve extended above 56 cfs; minimum, 0.01 cfs several days in August and September 1949, Aug. 16-19, Sept. 10, Oct. 1-10, 1950.

Remarks. Records fair. Flow regulated by reservoir since 1949.

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second) 

Oct. 1 to Jan. 9,

Apr. 17 to Sept. 30

1.85 

1.9

0.04

.05

.11

.20

.48

.94

1.55

2.3

2.4 

2.6

Jan. 

2.

10 to Apr. 16

60

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

10.6

9.7

9.2

9.0

8.7

10.2

16.3

10.5

9.2

*8.7

8.4

7.9

7.4

7.2

11

33

*32

16.6

13.1

11.6

10.9

10.0

9.5

9.5

10.6

9.5

9.0

8.4

8.2

9.2

23

414.1

13.4

5.88

6.75

Nov.

10.9

9.5

8.4

20

28

13.1

10.3

9.2

8.4

7.9

13.9

12.2

10.3

13.5

9.7

9.2

9.5

7.9

10.9

10.3

10.3

*9.7

9.2

9.5

8.4

8.4

11.2

10.0

8.4

7.2

325.4

10.8

4.74

5.31

Dec.

6.6

5.9

5.7

6.8

7.9

6.3

5.2

4.6

4.3

4.0

3.4

3.3

2.9

2.7

3.0

2.9

2.45

2.45

2.45

1.8

bl.15

bl.O

bl.05

bl.15

bl.8

1.8

1.8

1.55

1.45

1.45

1.22

100.07

3.23

1.42

1.63

Jan.

1.10

.83

.88

.99

1.22

1.35

1.45

b2.4

b38

29

24

23

22

18.0

15.6

14.0

11.6

blO.5

b9.6

9.1

8.4

7.3

b6.6

b6.4

6.0

5.6

5.4

5.1

4.8

5.4

6 . 2

301.82

9.74

4.27

4.92

Feb.

5.3

5.3

b5.3

b5.1

5.1

4.9

7.7

7.9

6.8

6.4

6.0

8.1

8.1

7.3

7.3

7.7

6.8

6.2

6.0

5.6

5.4

b5.1

4.9

4.6

6.2

b9.C

b6.4

6.2

b5.6

182.3

6.29

2.76

2.97

Mar.

5.6

5.4

7.5

ll!4

9.8

8.4

14.3

11.1

8.8

7.9

8.1

9.4

8.1

7.7

7.3

b7.5

b!5.5

7.3

6.0

5.8

5.8

6.4

7.3

7.1

6.6

6.0

5.6

5.6

5.6

5.6

5.8

240.3

7.75

3.40

3.92

Apr.

6.6

3.1

*9.6

11.1

18.1

22

20

14.0

14.0

14.0

16.2

18.4

19.5

21

19.1

30

28

20

17.5

14.7

7.9

7.2

7.7

7.4

6.6

5.7

5.4

£.8

16.7

12.5

424.8

14.2

6.23

6.93

May

6.8

5.6

5.2

*4.t

4.4,

4.2

4.C

3.7

3.4

3.6

5.7

5.4

d ,Z

3.0

2.t

2.E

2.6

2.b

2.R ,

2.4'S

2.25

2.25

2.15

2.05

1^9

1.9

2.9

2.8

2.15

1.9

2.9

100 . 50

3.24

1.42

1.64

June

3.6

2.8

10.9

10.4

4.O

2.8

2.25

1.9

1.8

1.9

1.9

1.65

1.45

1.3

1.10

.94

.94

.83

.69

.60

.60

.69

.60

.48

.56

.52

.45

.56

.45

.35

59.01

1.97

0.864

0.96

July

0.30

.24

.22

.18

.23

.74

.78

.56

.60

.60

.38

.32

.27

.32

.35

.30

.27

.22

.20

.18

.15

.20

.22

.22

.20

.20

.18

.18

.18

.16

.16

9.34

0.301

0.132'

0.15

Aug.

0.16

.16

.14

.14

.14

.14

.06

.04

.04

.06

.05

.06

.08

.08

.10

.08

.08

.07

.07

.07

.08

.08

.08

.08

.08

.08

.08

.08

.07

.06

.06

2.6E

0.035

0.037

0.04

Sept.

0.06

.07

.06

.06

.06

.06

.07

.07

.07

.07

.06

.07

.07

.07

.07

.06

.07

.08

.08

.08

.08

.08

.08

.16

.24

.ie

.13

.18

.24

.16

2.87

0.096

0.042

0.05

Calendar year 1955: Max 57 Min 0.02 Mean 4.59 Cfsm 2.01 In. 27.33

Water year 1955-56: Max 57 Min 0.04 Mean 5.91 Cfsm 2.59 In. 35.27

Peak dlacharKe (base. 45 efa).--Oct. 15 (6 p.m.) 98 cfs (5.62 ft); Oct. 51 (5 

.. Nov. 5, 51 cfs (3.33 ft); 

de on this day.

ft); 10 p.m Nov.

* Discharge measurement

b Stage-discharge relation affected

Note.--Discharge in cubic feet per second per square mile and 

natural flow because of regulation.

.m.) 45 cfs (3.28 

p.m.) 76 cfs (3.50 ft).

noff in inche ot represent
102 MERRIMACK RIVER BASIN

South Branch Nashua River at Clinton, Mass.

Location. Lat 42°24'15", long 71°41'25", at Wachusett Dam, 1 mile south of Clinton, Worcester County.

Drainage area. 107.69 sq mi since July 1937.

Records available. July 1896 to September 1956.

Average discharge. 60 years, 189 cfs (adjusted to present drainage area).

Remarks. Plow regulated by Wachusett Reservoir and several ponds. Records adjusted for 

change in contents in and wastage from Wachusett Reservoir and diversions from Ware 

River and Quabbin Reservoir on Swift River. Entire flow, except wf stage, diverted for 

use of Boston metropolitan district.

Cooperation. Records furnished by Water Division of Metropolitan District Commission. 

Revisions (water years). WSP 1051: 1928.

Monthly discharge and rainfall, water year October 1955 to September 1956

Month

Calendar year 1955. ..........

Runoff

(millions of 

gallons)

67,220.2

17 257 2

Discharge per

Millions 

of gallons 

per day

1.710

1.051

square mile

Cubic feet 

per second

2.65

(inches)

35.90

1.81

(inches)

4.88

53.46

5.20

2.55
MERRIMACK RIVER BASIN 103

Squannacook River near West Groton, Mass.

Location. Lat 42°38'03", long 71°39 T 30", on left bank 0.7 mile downstream from Trout 

Brook and 2.7 miles northwest of West Groton, Middlesex County.

DralnaKe area. 62.8 sq mi, excludes 2.10 sq mi above outlet of Fitchburg Reservoir. 

Records available. October 1949 to September 1956.

Gage. Water-stage recorder. Datum of gage is 244.27 ft above mean sea level, datura of 

1929.

Average discharge. 7 years, 127 cfs.

Extremes. Maximum discharge during year, 4,010 cfs Oct. 16 (gage height, 8.04 ft), from 

rating curve extended above 2,200 cfs by logarithmic plotting; minimum daily, 11 cfs 

Aug. 27-29.

1949-56: Maximum discharge, that of Oct. 16, 1955; minimum daily, 4.3 cfs Aug. 14, 

1950.

Remarks. Records excellent except those for periods of ice effect, which are good, and 

those for period of no gage-height record, which are fair. Flow regulated by mill 

above station. Entire flow from 2.10 sq mi above outlet of Fitchburg Reservoir diverted for municipal supply of Fitchburg during most years.

Rating tables, water year 1955-56, except periods of loe effect (gage 

height, In feet, and discharge, In cubic feet per second)

Nov. 1 to Sept. 30

1.9 

2.1 

2.5 

3.0 

3.5

138

234

362

760

1,440

2,480

3,940

1.6

1.7 

2.0 

2.4 

2.8

8.4

12

61

112

3.2 

4.0 

5.0 

6.0 

7.0

182

366

760

1,440

2,480

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

1213'

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

25

21

32

*25

22

20

78

116

77

78

39

41

38

36

653

2.770

1,080

1,070

546

365

274

223

175

171

168

159

143

132

120

106

383

9,186

296

4.71

5.44

Nov.

622

363

266

254

873

840

449

325

275

232

263

348

353

363

*391

308

322

308

241

206

204

182

165

150

165

147

126

138

128

114

9,121

304

4.84

5.40

Dec.

109

103

103

107

165

171

128

114

102

100

74

92

85

*67

58

b73

78

53

66

b52

47

44

40

39

39

48

65

45

36

.35.

35

2,373

76.5

1.22

1.41

Jan.

28

33

39

40

40

38

36

31

858

2,410

1,240

859

740

606

413

350

286

232

194

*186

169

145

149

131

123

112

114

108

89

112

106

10,017

323

5.14

5.93

Feb.

94

94

93

b90

21

100

114

147

142

130

118

124

169

149

138

142

128

115

110

122

104

b96

b92

b83

*90

123

142

126

b!05

3,357

116

1.85

1.99

Mar.

b97

104

117

156

200

159

200

247

188

150

131

154

150

142

135

117

b92

b!22

128

112

bllO

115

126

126

bllS

*126

112

110

110

115

112

4,181

135

2.15

2.48

Apr.

110

154

190

219

356

543

638

418

372

350

394

456

543

598

624

725

1,180

918

720

602

535

a520

a540

a470

a410

a390

a360

a370

aSOO

a920

15,425

514

8.18

9.13

May

a620

*a440

356

310

286

250

243

215

192

186

178

165

149

158

143

136

131

123

117

102

118

106

96

112

94

92

96

159

130

94

115

5,712

184

2.93

3.38

June

93

120

162

416

295

*182

133

109

100

78

108

90

72

69

59

45

40

44

41

40

37

39

36

34

34

33

31

36

38

33

2,647

88.2

1.40

1.57

July

30

29

26

25

26

35

40

36

36

36

32

27

26

36

11

33

29

23

24

23

22

26

26

24

23

21

19

18

11

17

17

843

27.2

0.433

0.50

A'lg.

*17

15

15

15

15

15

15

15

14

14

14

13

15

16

15

13

13

14

*14

13

15

15

15

14

13

13

11

TT

11

12

15

435

14.0

0.223

0.26

Sept.

16

17

16

15

14

13

17

15

15

13

12

12

13

13

13

16

21

21

17

17

16

15

15

34

36

26

21

*23

23

20

535

17.8

0.283

0.32

Calendar year 1955: Max 2,770 Min 5.1 Mean 128 Cfsm 2.04 In. 27.75

Water year 1955-56: Max 2,770 Min 11 Mean 174 Cfsm 2.77 In. 37.81

Peak: discharee (base, 700 cfs). --Oct. 16 (4:30 a.m.) 4,010 cfs (8.04 ft); Nov. 1 (3 to 4 a.m.)

760 cfs (5.00 ft); Nov. 5 (8 to 9 p.m.) 1,250 cfs (5.76 ft); Jan. 10 (7 to 8 a.m.) 2,900 cfs (7.32

ft); Apr. 17 (12 m. to 1 p.m.) 1,300 cfs (s.82 ft).

- Discharge measurement made on this day. 

a No gage-height record; discharge estimated on basis of 1 discharge measurement, wea 

and records for North Nashua River near Leominster. 

b Stage-discharge relation affected by ice.
104 MERRIMACK RIVER BASIN

Nashua River at East Pepperell, Mass.

Location. Lat 42°40'03", long 71°34'32", on right bank 200 ft downstream from powerplant 

of St. Regis Paper Co. at East Pepperell, Middlesex County, and 0.8 mile upstream from 

Nissitissit River.

Drainage area. Total above gage, 433 sq mi; net above gage, 316 sq mi (flow diverted 

from 117 sq mi for use of Boston metropolitan district and city of Forcester).

Records available. October 1935 to September 1956.

Gage .--Water-stage recorder. Datum of gage is 169.04 ft above mean sea level, datum of

Average discharge. 21 years, 544 cfs (adjusted for wastage into Nashua River). 

Extremes. Maximum discharge during year, 5,880 cfs Oct. 17 (gage heiglt, 11.02 ft); minimum daily, 7.3 cfs Sept. 30.

1935-56: Maximum discharge, 20,900 cfs Mar. 20, 1936 (gage height, 19.1 ft, from

floodmarks.) from rating curve extended above 12,000 cfs on basis of velocity-area

studies; minimum daily, 1.1 cfs Aug. 13, 1939. 

Remarks . Records good except those for periods of backwater from aquatic vegetation,

which are fair. Extremes and daily discharge include water wasted in diverting drainage from basin of South Branch Nashua River for use of Boston metropolitan district

and water diverted around station through plant of St. Regis Paper Co. Flow regulated

by powerplant above station. 

Revisions . WSP 801: Drainage area.

Rating table, water year 1955-56, except periods of backwater from aqua 

vegetation (gage height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used Oct. 1-15, 23-31)

Nov. 1 to Sept. 30

1.2 149

1.5 220

2.0 406

3.0 845

5.0 1,870

8.0 3,610

11.0 5,860

7.3

1.0 

1.2 

1.5

27

44

69

129

2.0 

2.5 

3.0 

5.0 

8.0 

11.0

292

520

815

1,870

3,610

5,860

Discharge, In cubic feet per second^ water year October 1955 to SepteTiber 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

450

162

215

*350

377

419

820

1,070

303

621

728

521

346

381

980

*3,090

*5,550

5,260

4,210

3,060

2,130

1,650

961

1,240

1,200

1,170

1,140

1,08O

1,010

366

1,200

42,040

1,356

73.6

Nov.

2,090

2,100

1,720

1,500

2,250

3,310

5,350

2,640

2,100

1,800

1,760

1,960

1,840

*2,120

2,120

2,110

1,990

1,860

1,680

1,520

1,400

1,420

1,360

898

1,250

1,220

1,110

946

1,010

1,010

53,424

1,781

321

Dec.

869

803

629

653

755

718

797

815

773

755

737

623

570

*533

335

343

583

230

430

605

449

301

216

249

9.0

93

563

482

411

393

186

15,908.0

513

37.5

Jan.

8.0

12

552

531

359

279

264

85 '

1,030 

3,970

5,OOO

4,420

3,710

2,970 ,

2,080

1,860

1,550

1,460

1,380

*1,290

1,200

1,050

930

946

946

924

919

958

919

833

919

43,354.0

1,399

127

Feb.

919

880

875

845

737

665

833

1,070

1,050

1,000

958

919

1,000

1.080

1,030

1,030

1,010

952

845

737

815

761

659

665

731

797

827

897

902

25,489

879

136

Mar.

839

809

*869

790

1,300

1,180

1,270

1,700

1,460

1,210

869

1,080

1,130

1,120

1,090

1/050

930

623

963

897

980

958

985

1,030

665

952

930

924

919

936

946

31,404

1,013

139

Apr.

617

*1,020

1,160

1,270

1,600

2,310

2,730

2,380

1,980

1,920

2,020

2,210

2,400

2,6OO

2,540

2,810

3,430

5,970

3,780

3,350

2,990

2,540

2,650

2,600

2,500

2,310

2,110

1,910

2,010

3,030

70,747

2,358

317

May

5,260

*3,010

2,550

2,160

1,920

1,400

1,540

1,420

1,520

1,180

1,140

1,060

642

851

865

875

845

775

974

595

852

621

359

647

743

875

270

786

1,010

209

750

35,278

1,138

228

June

1,000

857

252

,590

,620

* ,260

,040

,OOO

797

160

751

785

575

605

411

402

*169

112

567

571

371

*546

479

107

22?

297

295

527

559

559

17,265

576

75.2

Jjly

109

267

314

7.6

279

367

367

109

275

367

363

367

363

109

55

428

375

375

367

365

109

9.0

299

371

" 371

367

363

98

9.8

273

324

8,218.4

265

82. 0

Aug.

264

264

260

67

8.4

285

320

2-60

260

256

79

9.8

213

286

271

256

256

94

*8.4

193

260

*260

271

335

126

8.4

257

~553 367

355

121

6,650.0

214

90.9

Sept.

59

54

19

609

465

178

197

7.6

7.6

555

204

88

84

49

8.0

8.4

226

2OO

166

271

150

8.0

8.0

261

571

363

324

*142

7.6

7 .5

5,057.5

169

9.50

Adjusted for wastage (figures represent net discharge from net drainage area)

Mean 

Cfsm 

In.

1,285 

4.06 

4.S8

1,460 

4.62 

5.15

Calendar year 1955: 

Water year 1955-56:

476 

1.51 

1.74

1,272 

4.03 

4.64

743 

2.55 

2.54

874 

2.77 

5.19

2,041 

6.46 

7.21

910 

2.88 

5.32

Observed

Max 5,530 Mln 9.0 Mean 748 

Max 5,530 Mln 7.3 Mean 969

500 

1.58 

1.77

185 

C.579 

0.67

125 

0.589 

0.45

159 

0.503

0.56

Adjusted

Mean 642 Cfsm 2.05 In. 27.58 

Mean 854 Cfsm 2.g4 In. 55.92

* Discharge measurement made on this day.

t Water wasted In diverting drainage from basin of South Branch Nashua River for use of Boston 

metropolitan district, equivalent In cubic feet per second. Records furnished b;' Water Division of 

Metropolitan District Commission.

Note.--Backwater from aquatic vegetation Dec. 18, 19, 23-26, Dec. 31 to Jan. 2, Jan. 8, 9, May 20, 

27, 28, 30, 31, June 3, 10, 11, 17, 18, 24, 25, June 27 to Sept. 30.
MERRIMACK RIVER BASIN

Assabet River at Maynard, Mass.

Location. Lat 42°25'55", long 71°27'01", on right bank at Maynard, Middlesex County, 

150 ft upstream from bridge on State Highway 27, 1.7 miles downstream from Assabet 

Brook, and 7.1 miles upstream from confluence with Sudbury River.

Drainage area. 116 sq mi.

Records available.--July 1941 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 145 ft (from topographic map).

Average discharge. 15 years, 181 cfs.

Extremes. Maximum discharge during year, 1,380 cfs Jan. 11 (gage height, 5.48 ft); minimum daily, 1.0 cfs Sept. 15.

1941-56: Maximum discharge, 4,250 cfs Aug. 20, 1955 (gage height, 8.94 ft); maximum gage height, 8.96 ft Aug. 20, 1955 (backwater from debris); minimum daily discharge, 

0.8 cfs Oct. 4, 1953.

Remarks. Records good. Low flow regulated by mills above station; greater regulation 

prior to 1953.

Revisions (water years1.--WSP 1231: 1945-46.

Rating tables, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second

Oct. 1 to Jan. 10 Jan. 11 to Sept. 30

2.3 

2.5 

3.0 

3.5 

4.0 

5.0 

6.0

80

113

222

365

555

1,040

1,680

2.5 

3.0 

3.5 

4.0 

5.0 

6.0

122

250

410

615

1,100

1,700

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

&

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tota]

Mean

Cf sm

In.

Oct.

147

143

135

122

115

118

210

293

320

282

222

180

160

147

268

726

1,210

1,190

917

7 O2

579

483

404

365

347

335

317

293

276

262 

359

11,627

375

3.23

3.73

Nov.

519

571

499

463

752

1.170

1,070

805

*662

571

587

680

698

653

644

619

579

519

471

435

410

386

362

347

335

323

302

290

276

248

16,246

542

4.67

5.21

Dec.

238

222

217

240

311

344

317

268

230

207

192

185

171

*162

160

164

147

145

145

129

117

104

96

91

103

111

110

98

90

90 

90

5,294

171

1.47

1.70

Jan.

86

82

83

83

86

90

88

93

395

961

1.350

1,130

955

870

790

70O

597

510

426

410

*375

340

319

280

271

253

241

223

208

229 

262

12,766

412

3.55

4.09

Feb.

262

256

253

238

244

229

2?2

354

372

350

322

375

486

498

450

426

403

358

319

328

304

262

*250

232

244

307

372

368

322

------

9,476

327

2.82

3.04

Mar.

289

286

316

434

584

558

550

692

696

620

522

494

486

470

446

418

313

334

372

350

350

347

364

268

334

375

344

328

319

322 

319

13 , 000

419

3.61

4.17

Apr.

331

382

454

526

664

*965

*1,140

1,060

835

825

875

920

930

925

910

960

1,180

*1,210

965

8OO

*682

602

558

566

546

498

466

438

466

*546

22,225

741

6.39

7.13

May

562

490

422

389

361

334

325

310

295

277

271

265

247

241

229

217

202

196

182

175

172

165

158

156

150

139

145

152

132

143 

154

7,656

247

2.13

2.45

June

199

£17

238

310

554

277

196

154

135

126

122

116

110

112

94

98

1OO

91

80

70

69

7O

66

67

70

41

50

38

26

li

3,688

123

1.O6

1.18

July

33

64

39

5.6

54

66

63

60

66

66

44

49

67

66

63

43

52

33

51

43

4.8

170

49

66

37

21

49

61

19

23 

46

1,409.4

45.5

0.392

0.45

Aug.

21

*20

21

3.2

23

24

26

26

24

26

2.6

2.4

19

19

19

18

25

2.2

2.2

23

*22

19

13

24

1.6

1.4

18

19

18

21 

19

£22. 6

16.9

C.146

0.17

Sept.

1.8

17

1.6

13

17

18

23

1.4

1.5

22

23

20

17

17

1.0

12

24

23

23

23

23

26

17

63

42

46

40

24

23

9.7

612.8

20.4

0.176

0.20

Calendar year 1955: Max 3,650 Min 2.9 Mean 277 Cfsm 2.39 In. 32. 3S

Water year 1955-56: Max 1,33O Min l.o Mean 286 Cfsm 2.47 In. 33. 5E

Discharge measurement made on this day.
106 MERRIMACK RIVER BASIN

Sudbury River at Framingham Center, Mass.

Location. Lat 42°17'30", long 71°26'40", at dam of Framingham Reservoir No. 1, half 

a mile upstream from outlet of Farm Pond and three-quarters of a mile southwest of 

Framingham Center, Middlesex County.

Drainage area. 75.2 sq mi since January 1881.

Records available. January 1875 to September 1956.

Average discharge. 81 years, 113 cfs (adjusted to present drainage area).

Remarks. Records adjusted for change in reservoir contents, diversions, and wastage. Flow 

diverted as needed for use of Boston metropolitan district. Part of flow from Wachusett 

Reservoir on South Branch Nashua River is diverted into Sudbury Reservoir en route to 

Boston metropolitan district.

Cooperation. Records furnished by Water Division of Metropolitan District Commission-; - 

Revislons (water years). WSP 1051: 1937.

Monthly discharge and rainfall, water year October 1955 to September 1956

Water year 1955-56 ..........

Runoff 

(millions of 

gallons

4,915.7 

6,513.2 

1,654.5

42,193.6

5,446.5 

4,288.4 

5,196.3 

9,140.2 

2,148.8 

682.7 

-164.9 

-623.8 

185.1

39.382.7

Discharge per square mile

Millions 

of gallons 

per day

2.109 

2.887 

.710

1.537

2.336 

1.966 

2.229 

4.052 

.922 

.303 

-.071 

-.268 

.082

1.431

Cubic feet 

per second

3.26 

4.47 

1.10

2.38

3.62 

3.04 

3.45 

6.27 

1.43 

.468 

-.109 

-.414 

.127

2.21

Runoff 

(inches)

3.76 

4.98 

1.27

32.30

4.17 

3.28 

3.98 

6.99 

1.64 

.52 

-.13 

-.48 

.14

30.12

Rainfall 

( inches)

7.95 

4.77 

.96

55.50

7.24 

4.98 

6.21 

3.63 

1.65 

2.73 

3.52 

1.60 

4.52

49.56

Note.--Negative figures indicate that evaporation and seepage from reservoir exceeded inflow.

Lake Cochituate Outlet at Cochituate, Mass.

Location. Lat 42°18'45", long 71°23'15", at outlet three-eights of a nile north of

Cochituate railroad station, Middlesex County, and 1-jj miles upstrean from Sudbury River.

Drainage area. 17.40 sq mi since January 1937.

Records available. January 1863 to September 1956.

Average discharge. 93 years, 26.2 cfs (adjusted to present drainage area).

Remarks.--Records adjusted for change in reservoir contents, diversions, and wastage.

Entire flow available, if needed, for use of Boston metropolitan district; no diversion 

for water supply since 1931.

Cooperation. Records furnished by Water Division of Metropolitan District Commission.

Monthly discharge and rainfall, water year October 1955 to September 1956

Month

December .......................

Calendar year 1955 ...........

September ......................

water >ear 1955-56. ..........

Runoff 

(millions of 

gallons)

1,408.9 

1,921.3 

668.4

13,658.9

1,817.4 

1,661.8 

1,720.6 

2,406.2 

876.7 

262.4 

98.8 

-46.0 

184.5

12,981.0

Note .--Negative figures indicate that evaporati

Discharge per square mile

Millions 

of gallons 

per day

2.612 

3.681 

1.239

2.151

3.369 

3.293 

3.190 

4.610 

1.625 

.503 

.183 

-.085 

.353

2.038

Cubic feet 

per second

4.04 

5.70 

1.92

3.33

5.21 

5.10 

4.94 

7.13 

2.52 

.778 

.283 

-.132 

.547

3.15

Runoff 

(inches)

4.55 

6.35 

2.21

45.17

6.01 

5.50 

5.69 

7.96 

2.90 

.87 

.33 

-.15 

.61

42.94

Rainfall 

(inches)

10.27 

4.68 

1.03

57.39

7.21 

4.25 

5.75 

3.00 

1.51 

1.79 

2.73 

1.79 

4.24

48.05

on and seepage from reservoir exceeded inflow.
MERRIMACK RIVER BASIN 107

Concord River below River Meadow Brook, at Lowell, Mass.

Location. Lat 42°38 1 12", long 71°18 1 09", on right bank 300 ft downstream f-om Rogers

Street Bridge at Lowell, Middlesex County, 0.3 mile downstream from Rive- Meadow Brook, 

and 0.8 mile upstream from mouth.

Drainage area. Total above gage, 405 sq mi; net above gage, 312 sq mi (divBrsion as 

needed from 92.6 sq mi for use of Boston metropolitan district).

Records available. October 1936 to September 1956. October, November 1936 monthly discharge only, published in WSP 1301.

Gage. Water-stage recorder. Datum of gage is 67.41 ft above mean sea level, datum of 

1929.

Average discharge. 20 years, 470 cfs (adjusted to net drainage area).

Extremes. Maximum discharge during year, 2,970 cfs Apr. 18, 19 (gage height, 7.71 ft); 

minimum, 19 cfs Aug. 22; minimum daily, 79 cfs Aug. 18, 22.

1936-56: Maximum discharge, 4,540 cfs Aug. 23, 1955 (gage height, 8.97 ft); minimum, 7.0 cfs July 12, Dec. 10, 1949; minimum daily, 13 cfs Aug. 28, 1949.

Remarks. Records excellent except those for periods of no gage-height record or backwater 

from aquatic vegetation, which are good 1 . Daily discharge includes water wasted from 

92.6 sq mi in basins of Sudbury River and Lake Cochituate. Water diverted above station for use of city of Lowell. Plow regulated by mills above station.

Rating tables, water year 1955-56, except period of backwater from aquatic 

vegetation (gage height, in feet, and discharge, in cubic feet per second)

Nov. 1 to Sept. 30

5.0 

6.0 

7.0 

8.0

430

1,100

2,040

3,270

4.0 79

4.2 120

4.5 204

5.0 430

6.0 1,140

7.0 2,170

8.0 3,320

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Ttotal

Mean

(t)

Oct.

*557

560

545

520

490

470

550

670

770

810

840

810

780

740

1,000

1,600

2,000

2,200

2,300

2,300

2,200

2,100

2,000

1,900

1,800

1,650

1,550

1,450

1,350 

1,250

1,200

38,962

1,257

-307

Nov.

1,300

1,400

1,400

1,600

1,900

2,150

2,250

2,500

2,250

2,200

2,150

2,200

2,300

2,310

2,290

2,250

2,210

2,150

2,030

1,920

1,860

1,780

*1,690

1,610

1,550

1,480

1,430

1,390

1,350 

1 » 280

55,980

1,866

-520

Dec.

1,210

1,160

1,110

1,100

1,130

1,120

1,110

1,100

1,050

986

938

906

860

815

755

684

670

657

*657

590

560

515

475

419

424

430

452

408

375 

360

3_20

23,346

753

-210

Jan.

300

307

340

325

330

345

330

392

869

1,350

1,780

2,260

2,560

2.640

2,620

2,580

2,480

2,270

2,130

2,050

1,880

1,750

1,670

1,470

1,410

*1,360

1,260

1,170

1,110

1,100

1,070

43,508

1,403

-374

Feb.

1,060

1,030

1,020

960

970

954

994

1,080

1,150

1,180

1,170

1,230

1,360

1,460

1,500

1,490

1,470

1,400

1,350

1,350

1,310

1,210

*1,160

1,090

1,060

1,100

1,130

1,170

1,180

34,588

1,193

-358

Mar.

1,170

1.150

1,160

1,240

1,350

1,430

1,530

1,650

1,760

1,800

1,770

1,730

1,700

1,660

1,620

1,560

1,290

1,450

1,390

1,220

1,330

1,390

1,400

1,380

1,330

1,400

1,380

1,350

1,320

1,300

1,300

44,510

1,436

-415

Apr.

1.510

1,350

1,410

*1,500

1,660

1,930

2,170

2,370

2,490

2,510

2,560

2,600

2,650

2,680

2,680

2,760

2,860

2,950

*2,960

2,860

2,720

2,570

2,420

2,310

2,200

2,090

1,990

1,880

1,910

1,970

68,320

2,277

-518

Hay

1,980

1,970

1,900

1,800

1,670

1,590

1,510

1,420

1,370

*1,310

1,220

1,160

1,080

1,04O

1,000

970

958

898

852

800

785

726

691

650

612

581

575

595

587

551

C£Q Oby

33,398

1,077

-259

June

575

563

595

677

719

753

726

698

650

631

612

575

545

555

505

468

474

515

497

480

452

419

565

560

597

575

560

297

251 

212

15,255

508

-114

July

222

228

222

201

222

211

209

251

297

259

259

236

201

189

239

275

250

240

220

190

180

220

250

250

250

210

190

170

200 

220

190

6,911

225

-82.9

Aug.

*167

148

152

94

107

140

118

103

90

109

107

107

138

125

125

120

107

19,

88

85

97

79

90

93

98

88

85

85

87

85

94

5,268

105

-51.8

Sept.

88

83

96

140

*99

98

108

103 128-

152

138

112

102 1'2

89

138

186

170

182

188

201

192

211

247

*239

243

239

247

259 

284

4,864

162

-108

Adjusted for wastage and diversion (figures represent net discharge from net drainage area)

Mean 

Cfsm

In.

950 

5.04 

3.51

1,546 

4.31 

4.81

Calendar year 1955: 

Water year 1955-56;

543 

1.74 

2.01

1,029 

3.30 

3.80

834 

2.67 

2.88

1,021 

3.27 

3.77

1,760 

5.64 

6.29

818 

2.62 

3.02

Observed

Max 4,490 Mln 80 Mean 957 

Max 2,960 Hln 79 Mean 1,019

395

1.27 

1.41

140 

0.449 

0.52

75.6 

0.236 

0.27

54.5 

0.175 

0.19

Adjusted

Mean 677 Cfsm 2.17 In. 29.47 

Mean 745 Cfsm 2.39 In. 32.48

* Discharge measurement made on this day.

t Water wasted from 92.6 sq ml In basins of Sudbury River and Lake Cochituate and d'version for 

use of city of Lowell, equivalent in cubic feet per second. Records furnished by ulatsr Division of 

Metropolitan District Commission and by city of Lowell.

Note.--No gage-height record Oct. 2 to Nov. 15, July 17-31; discharge estimated on basis of 

weather records, recorded range in stage, and records for North Nashua River near Leominster and 

Assabet River at Maynard. Backwater from aquatic vegetation June 16 to Sept. 30.
108 MERRIMACK RIVER BASIN

Merrimack River below Concord River, at Lowell, Mass.

Location. Lat 42°38'45", long 71°17'56", on right bank 1,100 ft downstream from Concord 

River, at Lowell, Middlesex County.

Drainage area. Total above gage, 4,635 sq mi; net above gage, 4,425 sq mi (diversions as 

needed from 210 sq mi for use of Boston metropolitan district and city of Worcester).

Records available. June 1923 to September 1956.

Gage. Water-stage recorder. Datum of gage is 5.18 ft above mean sea level, datum of 

1929. Prior to Mar. 7, 1934, at Boott Mills 1,800 ft upstream and 700 ft above mouth 

of Concord River, in same gage pool and at same datum; gage-height record (furnished by 

proprietors of locks and canals) was indicative of flow including that of Concord River.

Average discharge. 33 years, 7,292 cfs (adjusted for wastage into Merrimack River).

Extremes. Maximum discharge during year, 46,900 cfs May 1 (gage height, 51.54 ft); maximum gage height, 51.73 ft Jan. 10 (backwater from ice); minimum daily, 548 cfs Aug. 12.

1923-56: Maximum discharge, 173,000 cfs Mar. 20, 1936 (gage height, 68.4 ft, from 

floodmarks); minimum daily, 199 cfs Sept. 23, 1923.

Remarks. Records excellent except those for period of ice effect and those below 1,000 

cfs, which are good. Daily discharge includes water wasted from 210 sr mi in basins 

of Sudbury and South Branch Nashua Rivers and Lake Cochituate. Flow regulated by 

powerplants , by Franklin Palls Reservoir since 1942, and by Squam, Newfound, Winnipesaukee, Winnisquam, and other lakes and reservoirs above station. See pages 

81,109 for description and month-end usable contents of many of these reservoirs.

Rating table, water year 1955-56, except period of Ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

41.3

41.5

42.0

42.5

43.0

475

698

1,520

2,740

4,270

44.0

46

49.0

52.0

7,820

16,400

31,900

49,800

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

£

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24 

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

*2,440

798

3,270

3,150

2,660

2,650

3,020

4,100

4,620

4,320

3,920

3,640

3,670

3,730

3,890

13,000

18,200

21,200

19,600

16,000

13,200

10,300

9,000

8,580 

8,460

7,980

7,500

7,120

6,370 

5,190

7,520

229,098

7,390

382

Nov.

12,900

15,400

13,900

12,400

16,600

24,800

24,000

20,300

16,600

14,800

14,200

14,000

13,900

14,700

15,200

15,000

15,300

16,OOO

14,600

13,100

12,200

10,800

10,300

9,000 

9,630

8,260

7,860

8,260

8,020 

7,580

409,610

13,650

842

Dec.

6,890

6,620

6,160

6,010

7,120

7,080

6,66O

6,370

6,160

5,460

5,360

5,800

5,600

5,360

5,290

5,090

4,330

3,860

5,290

4,950

4,400

3,890

3,550

2,710 

2,110

2,180

3,700

3,480

3,36O 

2,860

2,340

150,040

4,840

249

Adjusted for waste

Mean

Cfsm

In.

7,008

1.58

1.83

12,810

2.89

3.23

Calendar year 1955:

Water year 1955-56:

4,591

1.04

1.20

Jan.

1,670

1,750

3,030

2,630

2,500

2,470

1,800

3,830

b6,600

b 23, 000

b56,000

34,600

32,400

31,600

27,800

25,700

23,400

18,700

15,000

13,200

11,500

9,840

9,210

8,380 

*8,460

7,980

7,310

6,370

6,190 

6,700

6,960

396,580

12,790

503

Feb.

6,700

6,930

6,700

6,160

5,870

6,660

6,740

7,540

7,980

7,940

7,700

7,860

8,260

8,340

8,620

8,500

8,180

,700

,150

,780

,820

,810

,740

,370 

,370

,810

,230

,620

,700

212,780

7,337

495

Mar.

7,780

7,620

7,270

7,620

8,870

9,040

9,500

9,920

9,500

8,660

7,980.

8,380

8,700

8,830

8,500

8,380

5 , 94 Q

6,190

7,460

7,940

8,180

8,460

8,420

7,860 

6,700

7,270

7,620

7,420

7,270 

7,040

6,440

246,760

7,960

555

Apr.

6,050

7,000

8,220

8,960

11,100

*15,700

20,400

22,700

20,800

19,600

20,100

21,900

24,700

28,000

29,800

31,400

39,500

45,500

44,100

38,900

34,500

32,000

31,200

29,900 

26,500

24,000

22,500

21,900

26,800 

39,700

 .

755,230

25,110

835

May

46,300

43 , 400

36,000

30,700

27,800

25,900

23 , 600

21,200

18,400

16,100

15,000

14,900

13,100

13,500

14,300

13,400

12,400

12,100

10,600

9,880

9,120

8,460

7,940

7,940 

8,380

7,900

7,420

10,500

19,200 

17,800

14,200

537,440

17,340

488

June

13,100

10,800

10,800

15,000

20,900

19,000

15,200

12,500

10,600

9,080

8,960

8,460

7,580

7,080

6,590

5,530

4,430

4,850

4,080

3,890

3,590

3,150

2,190

1.750 

3,230

3,130

3,270

3,300

3,540 

1,870

 ---

227,450

7,582

190

July

1,730

2,200

2,440

2,030

1,910

2,230

2,420

2,370

3,51-0

3,610

5,360

5,630

4,460

3,760

5,830

10,600

7,980

5,670

5,530

5,120

3,200

3,180

4,230

4,170 

3,170

2,200

2,560

1,900

1,640 

2,730

2,470 

115,960

3,741

166

Aug.

 2,500

2,500

2,340

1,370

948

2,550

2,100

2', 060

2,040

2,050

1,320

548

2,140

2,140

2,150

2,160

1,690

1,280

556

2,010

1,940

1,900

1,890

1,570 

1,270

566

1,610

1,550

1,800 

1,790

1,970

54,308

1,752

124

Sept.

1,230

817

1,460

2,940

2,630

3,070

3,480

1,620

1,420

2,940

2,950

2,450

E,260

2,200

1,450

589

2,240

2,690

3,990

4,220

3,830

3,180

3,010

5,540 

*4,240

6,740

6,260

4,620

3,320 

2,540

89,926

2,998

118

ige (figures represent net discharge from net drainage area)

12,290

2.78

3.20

6,842

1.55

1.67

7,405

1.67

1.93

24,270

5.48

6.12

16,850

3.81

4.39

7,391

1.67

1.86

3,575

0.808

0.93

1,628

0.368

0.42

2,879

0.651

0.73

Observed Adjusted

tex 24,800 Win 270 Mean 8,015 Mean 7,628 Cfsm 1.72 In. 23.41

lax 46,300 Min 548 Mean 9,353 Mean 8,942 Cfsm 2.02 In. 27.51

* Discharge measurement made on this day.

t Water wasted from 210 sq mi in basins of Sudbury and South Branch Nashua Rivers and Lake 

Cochituate, equivalent in cubic feet per second. Records furnished by Water Division of Metropolitan District Commission.

b Stage-discharge relation affected by ice.

Note. Discharge in cubic feet per second per square mile and runoff in inches may not represent 

natural flow because of regulation.
MERRIMACK RIVER BASIN 109

Reservoirs In Merrimack River basin

Newfound Lake on Newfound River, 1 2/3 miles north of Bristol, N. H.,.used for recreation 

and for storage of water for power, has usable capacity of 1,690,000,000 cu ft. Records furnished by Public Service Co. of New Hampshire,

Franklin Palls Reservoir on Pemigewasset River, 2 miles north of Franklin, N. H., completed In 1942, used for flood control, has usable capacity of 6,640,000,000 cu ft. 

Records furnished by Corps of Engineers,

Merrymeeting Lake on Merrymeeting River, 2| miles northeast of Alton, N. H., used for 

recreation and for storage of water for power, has usable capacity of 368,000,000 

cu ft. Records furnished by Public Service Co. of New Hampshire.

Lake Wentworth above Lake Winnipesaukee, at Wolfeboro Falls, N. H., used for recreation 

and for storage of water for power, has usable capacity of 854,000,000 cu ft. Records 

furnished by 0. P. Berry Co.

Lake Winnipesaukee on Winnipesaukee River (see p. 81).

Edward MacDowell Reservoir on Nubanusit Brook, at West Peterboro, 2 miles northwest of 

Peterboro, N. H., completed in I960, used for flood control, has usable capacity of 

558,000,000 cu ft. Records furnished by Corps of Engineers.

Blackwater Reservoir on Blackwater River, at Swett's Mills, 1 milp south of Webster, H. H. 

completed in 1941, us-ed for flood control, has usable capacity of 2,004 ,000,000 cu ft. 

Records furnished by Corps of Engineers.

Tower Hill Pond on Maple Falls Brook, 2^ miles north of Auburn, N. H., completed in 1939, 

used for storage of water for municipal supply and for power, has usable capacity of 

182,000,000 cu ft. Records furnished by Manchester Water Works.

Massabesic Lake on Cohas Brook, 2-=r miles southeast of Manchester, N. H., used for storage 

of water for municipal supply, has usable capacity of 724,000,000 cu ft. Records furnished by Manchester Water Works.

Month-end usable contents, in millions of cubic feet, water year October 1955 to Septembei

Date

Sept. 30, 1955.

Nov. 30....... 

Dec. 31. ...... 

Jan. 31, 1956.

Sept .30. ......

Newfound 

Lake

969

1,449 

1,083 

1,308

1,600

1,146

Franklin 

Falls 

Reservoir

136

140 

135 

133

788

138

Merrymeeting 

Lake

149

133

59 

82

42

190

254

196

Lake 

Wentworth

618

674 

612 

813

396

510

Edward 

MacDowell 

Reservoir

16.7

18.7 

1.6 

17.9

19.1

171.1

.6

Blackwater 

Reservoir

0.4

1.0 

.3

.8

189.6

.6

Tower Hill 

Pond

93.3

106.4 

82.5 

96.9

93.3

174.5

173.5

Massabesic 

Lake

535

633 

423 

719

444
110 PAHKER RIVER BASIN

Parker River at Byfleld, Mass.

Location. Lat 42°45'10", long 70°56 1 46", on left bank 1,400 ft downstream from dam, half 

a mile south of Byfield, Essex County, 0.7 mile upstream from Wheeler Brook, and 

5f miles southwest of Newburyport.

Drainage area. 21.6 sq mi.

Records available.--October 1945 to September 1956.

Gage.--Water-stage recorder and concrete control. Datum of gage is 23.46 ft above mean 

sea level, datum of 1929 (levels by Massachusetts Department of Public Works).

Average discharge. 11 years, .35.6 cfs.

Extremes.--Maximum discharge during year, 247 cfs Jan. 14 (gage height, 4.00 ft); minimum 

daily, 0.30 cfs Sept. 6, 14, 15, 18-21.

1945-56: Maximum discharge, 352 cfs Mar. 23, 1948 (gage height, 4.81 ft); minimum 

daily, 0.12 cfs July 30, 1952.

Remarks. Records excellent except those below 2.5 cfs, which are good. Diurnal fluctuation caused by mill above station. Some regulation at low flow by ponds above 

station.

Rating tables, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Jan. 13

1.5 4.4

1.6 7.3

1.8 15

2.1 32

2.5 61

3.0 107

4.0 225

Jan. 14 to Sept. 30

0.30 1.9

.41 2.2

1.17 2.5

2.4 3.0

4.1 4.0

61

109

247

Discharge, In cubic feet per second, water year October L955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Oct.

6.6

6.0

6.3

6.3

6.3

6.9

9.0

9.3

10

10

10

9.7

9.3

9.3

12

15

29

41

52

M

52

50

49

49

49

45

42

40

38

36 

41

809.0

26.1

1.21

1.39

Nov.

42

43

44

51

84

120

127

*122

115

106

114

118

117

115

111

106

103

95

83

77

74

67

60

58

56

53

50

47

45

42

2,445

81.5

3.77

4.21

Dec.

39

36

34

37

42

48

b47

44

40

38

35

31

*29

27

27

26

24

22

21

19

16

14

14

13

12

12

11

10

9.7

9.7

_9.3

798. 7

25.7

1.19

1.37

Jan.

8.7

8.3

3.7

8.7

9.0

8.7

8.3

12

39

121

174

199

222

228" 231

210

183

*158

*146

130

113

100

87

b75

b67

b61

57

52

50

47

47

2,869.4

92.6

4.29

4.94

Feb.

b43

42

41

b37

37

36

41

44

47

49

51

59

67

82

93

94

b88

75

66

*64

b63

b58

b52

b49

48

50

49

47

b45

1,617

55.8

2.58

2.78

Mar.

46

46

50

59

67

74

78

83

85

§1

87

87

86

81

77

b67

50

b59

62

55

56

56

56

54

52

52

52

*52

52

50 

52

1,970

63.5

2.94

3.39

Apr.

55

61

67

74

94

152

216

206

189

185

196

212

216

213

207

212

231

*230

*216

200

180

159

138

127

128

121

111

101

102

109

4,708

157

7.27

8.11

May

110

108

101

93

84

74

71

67

62

59

54

53

52

50

47

45

44

41

39

38

36

34

33

32

31

28

31

33

33

33 

32

1,648

53.2

2.46

2.84

June

31

29

30

33

36

38

36

33

31

30

28

26

23

21

19

18

16

14

13

12

12

10

9.7

9.0

8.4

7.7

7.4

6.7

6.4

5.8

600.1

20.0

0.926

1.03

July

5.4

5.1

4.5

3.7

*3.7

3.9

4.1

4.1

4.4

4.6

4.4

4.4

4.4

5.6 5~4

5.4

5.6

5.4

5.1

4.8

4.6

4.8

4.8

3.9

3.7

3.5

3.3

3.2

2.8

-H

134.0

4.32

0.200

0.23

Aug.

l±i

2.4

2.25

2.25

2.1

2.1

2.1

1.95

1.4

1.6

1.45

1.85

1.6

1.6

1.35

1.25

1.17

1.35

1.35

1.17

1.35

1.17

*1.08

1.17

.99

.90

.90

.74

.60

.47 

jjil

44.47

1.43

0.066

0.08

Sept.

0.36

.36

.36

.36

.36

.30

.47

.41

.36

.47

.82

.47

.3e

.3C

.3C

.36

.43

.3C

.3C

.3C

.3C

.36

.41

.67

.36

.58

1.25

1.17

1.35

1.45

15.62

0.521

0.024

O.OJ

Calendar year 1955: Max 127 Mln 0.47 Mean 33.7 Cfsm 1.56 In. 21.16

water year 1955-56: Max 231 Mln 0.30 Mean 4B.2 Cfsm 2.23 In. 30.40

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
IPSWICH RIVER BASIN 111

Ipswich River at South Middleton, Mass.

Location. Lat 42°34'10", long 71°01'39", on right bank 700 ft downstream from Boston 

Street Bridge at South Mlddleton, Essex County, 1.3 miles downstream from Wills Brook, 

and 2 miles south of Middleton.

Drainage area. 43.4 sq mi.

Records available. June 1938 to September 1956.

Gage. Water-stage recorder and concrete control. Altitude of gage is 45 ft (from topographic map).

Average discharge. 18 years, 69.7 cfs (adjusted for diversions).

Extremes. Maximum discharge during year, 497 ofs Jan. 13 (gage height, 5.68 ft); minimun, 

0.6 cfs Sept. 30.

1938-56: Maximum discharge, 646 cfs Mar. 21, 1948 (gage height, 5.895 ft); minimum, 

0.25 cfs Sept. 19, 1953.

Remarks. Records excellent except those for period of backwater from debris, which are 

good, and those for periods of ice effect or no gage-height record, which are fair. 

Water diverted above station for municipal supplies of Reading, Lynn, and Peabody. 

Regulation at low flow by mill above station.

Revisions (water years). WSP 1301: 1942(M) .

Rating tables, water year 1955-56, except periods of ice effect or backwater from 

debris (gage height, In feet, ana discharge, In cubic feet per second)

Oct. 1 to Nov. 11 Nov. 12 to Sept. 30

1.0 

1.4 

2.0 

3.0 

4.0 

5.0

19

27

58

90

111

174

260

372

0.1

.2 

.3

0.5

1.8 

4.2

1.5 

2.O 

3.0 

4.0 

5.0 

5.7

75

99

172

270

398

500

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

l

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

2O

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

38

42

*34

23

22

24

34

40

38

36

34

32

31

36

92

168

282

a335

85.4.0

a335

321

297

264

236

211

190

168

155

142 

132

146

4,278

138

9.97

Nov.

160

153

149

158

286

321

»306

290

273

258

270

289

259

246

241

228

218

200

188

184

172

163

151

142

132

118

111

106

101 

90

5,963

199

8.15

Dec.

88

82

73

79

*107

106

98

*98

90

84

77

72

*66

62

49

49

48

44

42

37

33

28

24

23

23

24

23

21

20 

20

20

1,710

55.2

1.67

Jan.

18

b!6

16

16

17

18

18

22

181

370

*440

471

490

473

437

399

340

282

b285

248

210

180

158

b!40

126

110

100

92

86

86 

*91

5,936

191

1.52

Feb.

b90

86

86

b83

79

*76

88

105

114

121

126

175

224

232

254

224

b!95

162

143

131

124

bl!5

103

94

90

103

103

110

bllO

3,726

128

1.53

Mar.

b!05

101

 117

146

162

161

190

226

226

228

224'

218

200

181

168

bl-63

b!45

135

140

123

118

119

126

134

b!24

124

b!24

b!26

b!29

130

Ida

4,741

153

1.60

Apr.

137

156

182

204

*267

a350

8400

a390

a360

8340

a360

a380

a380

a380

8370

a390

*406

380

343

317

287

257

238

234

214

198

188

178

227

238

8,751

292

1.66

May

*226

212

203

190

172

158

145

132

119

112

106

95

90

93

88

84

81

77

74

71

60

48

*44

45

42

39

39

42

41

40

41

3,009

97.1

8.52

June

44

42

50

73

63

59

56

52

48

44

41

49

46

44

42

38

37

33

26

24

23

22

20

18

17

16

14

14

13

12_

1,080

36.0

9.62

July

11

9.8

5.4

4.5

*5.5

*10

11

11

12

12

10

8.5

7.5

9.2

10

10

10

8.8

7.3

6.5

6.3

8.2

8.8

8.8

8.2

7.1

5.9

5.3

4.8

4.2

'5 * °

251.4

8.11

2.30

Aug.

3.3

*3.2

3.1

2.6

2.35

2.15

2.05

1.95

1.75

1.6

1.4

1.6

1.75

2.05

1.85

1.6

1.35

2.05

2.05

1.85

1.85

2.05

1.95

1.95

1.85

1.65

1.4

1.2

1.1

1.05

1.25

58.90

1.90

2.49

Sept.

1.35

1.4

1.85

1.4

1.25

n.is

1.65

1.75

1.65

1.6

1.4

1.35

1.25

1.25

1.4

1.65

2.25,

2.45

2.35

2.45

2.7

2.6

2.7

3.4

1^6

4.6

4.2

4.0

1.05

,85

63.55

2.12

3.15

Adjusted for diversions

Mean 

Cf sm 

In.

148

3.41 

3.93

207 

4.77 

5.32

Calendar year 1955: 

Water year 1955-56:

56.8 

1.31 

1.51

193 

4.45 

5.13

130 

3.00 

3.23

155 

3.57

4.11

293 

6.75 

7.54

106 

2.44 

2.80

Observed

Max 340 Min 0.7 Mean 86.1 

Max 490 Mln 0.85 Mean 108

45.6 

1.05 

1.17

10.4 

0.240 

0.28

4.39 

0.101

0.12

5.26 

0.121 

0.14

Adjusted

Mean 90.9 Cfsm 2.0? In. 28.42 

Mean 112 Cfsn 2.56 In. 35.28

Discharge measurement made on this day.

t Diversions, equivalent in cubic feet per second, for municipal supplies of Reading, Lynn, and 

Peabody; records furnished by municipalities.

a No gage-height record; discharge estimated on basis of weather records and records for Parker 

River at Byfield.

b Stage-discharge relation affected by ice.

Note. Backwater from debris Apr. 28 to May 23.
112 IPSWICH RIVER BASIN

Ipswich River near Ipswich, Mass.

Location. Lat 42 0 39'3S", long 70°53'39", on left bank 200 ft downstream from Willowdale 

Dam, lj miles downstream from Hewlett Brook, and 4 miles upstream from Ipswich, Essex 

County.

Drainage area. 124 sq ml.

Records available. June 1930 to September 1956. Prior to October 1930, published as "at 

Wlllowdale."

Gage. Water-stage recorder and concrete control. Datum of gage Is 80.63 ft above mean 

sea level, datum of 1929.

Average discharge. 26 years, 200 cfs (adjusted for diversions).

Extremes.--Maximum discharge during year, 1,530 cfs Jan. 13 (gage height, 6.00 ft); minimum, 5.5 cfs Aug. 19, 20.

1930-56: Maximum discharge, 2,610 cfs Mar. 15, 1936 (gage height, 7.70 ft); minimum, 

1.4 cfs Aug. 9, 1934.

Remarks. Records excellent except those for periods of ice effect or no gage-height record, which are good. Diversions above station for municipal supplies of Reading, Lynn, 

Peabody, and Danvers. No diversion during water year for Salem and Beverly.

Revisions.--WSP 781: Drainage area.

Rating tables, water year 1955-56, except periods of loe effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Jan. 12 Jan. 13 to Aug. 23 Aug. 23 to Sept. 30

41

83

146

240

470

780

1,460

5.5

2.8 

3.0 

3.3

3.6

5.0 

6.0

122

240

490

830

1,530

5.8

6.4

9.6

14

26

ublo feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

81

83

83

83

81

15

85

94

99

101

103

103

101

97

101

116

168

284

482

602

632

614

584

548

512

476

437

400

365 

334

329

8,253

266

12.6

Nov.

324

320

320

334

482

682

801

*843

794

722

708

708

696

676

656

620

596

554

518

476

448

420

395

375

356

338

316

300

288 

b27Q

15,336

511

10.6

Dec.

b260

240

233

233

256

268

b270

268

b250

b235

b220

b200

*b!90

180

174

b!55

b!50

b!45

b!35

bllS

bllO

blOO

90

80

75

72

69

64

60 

57

b5_6

5,010

162

4.20

Jan.

b51

b46

45

47

48

51

52

60

169

605

1,150

,440

,520

,430

,360

,250

,040

*851

b850

b795

b695

b615

b525

b485

b430

b380

b335

b310

b290 

272

b265

17,462

563

4.00

Feb.

b265

252

248

b245

b225

b220

b235

272

307

320

340

408

514

578

615

b590

b545

b470

b420

*419

397

b355

b325

b305

302

316

320

b300

b295

10,401

359

4.05

Mar.

b300

307

340

375

414

442

478

532

b550

627

627.

599

571

520

b505

b445

b270

b350

365

340

345

355

370

b340

b320

350

365

*b565

b365 

b335

355

12,822

414

4.09

Apr.

380

424

454

502

592

844

al,050

al.100

1,090

a950

al.OOO

al,090

1,090

1,080-

1,060

1,080

1,130

al.UO

al,070

al,000

a900

aSOO

a740

a700

a700

a650

592

538

627 

711

25,084

836

4.20

May

*746

697

627

578

544

514

466

430

397

380

355

340

320

302

289

280

268

256

244

233

222

208

202

196

186

171

166

160

160 

154

152

10,243

330

11.0

June

*152

146

152

154

166

177

183

180

171

163

154

146

136

129

122

116

107

101

92

83

72

64

61

54

51

49

45

39

37

15

3,335

111

13.0

July

32

28

25

22

*21

26

37

39

36

36

33

29

26

27

30

30

29

27

25

22

20

22

*24

24

22

20

18

16

14 

13

12

785

25.3

5.60

Aug.

11

10

9.3

8.2

8.2

7.8

7.5

7.5

7.5

7.2

6.3

6.6

8.5

10

9.3

7.5

6.6

6.0

1/7

5.7

6.6

7.2

*7.7

*8.S

8.9

8.2

7.6

6.7

6.4 

5. 8

5.8

235.9

7.61

6.32

Sept.

6.7

6.7

7.9

7.6

7.3

6.8

8.6

9.2

9.2

8.6

7.6

6.1

6.4

6.4

6.4

7.9

12

14

13

13

14

14

13

17

11

19

17

18

18 

17

339.7

"11.3

5.93

Adjusted for diversions

Mean 

Cfsm 

In.

279 

2.25 

2.59

522 

4.21 

4.70

Calendar year 1955: 

Water year 1955-56:

166 

1.34 

1.54

567 

4.57 

5.27

363 

2.93 

3.15

418 

3.37 

3.88

840 

6.77 

7.56

341 

2.75 

3.17

Observed

Max 843 Mln 4.0 Mean 224 

Max 1,520 Min 5.7 Mean 299

124 

1.00 

1.12

30.9 

0.249 

0.29

13.9 

0.112

0.13

17.3 

0.140 

0.16

Adjusted

Mean 237 Cfsrr 1.91 In. 25.97 

Mean 306 Cfsm 2.47 In. 33.56

* Discharge measurement made on this day.

t Diversions, equivalent in cubic feet per second, for municipal supplies of Reading, Lynn, Peabody, and Danversj records furnished by various municipalities.

a No gage-height record; discharge estimated Ofi basis of weather records and re-cords for Ipswich 

River at South Middleton and Parker River at Byfleld.

*> Stage-discharge relation affected by ice.
MYSTIC RIVER BASIN 113

Aberjona River at Winchester, Mass.

Location. Lat 42 C 26'50", long 71°08'22", on left bank at Winchester, Middlese*- County, 

0.5 mile upstream from head of Mystic Lakes.

Drainage area. 23.3 sq mi (excludes 1.4 sq mi drained by Winchester Reservoirs). 

Records available. April 1939 to September 1956.

Gage.--Water-stage recorder and concrete control. Datum of gage is at mean sea level, 

cTatum of 1929.

Average discharge. 17 years, 27.6 cfs.

Extremes. Maximum discharge during year, 378 cfs Jan. 9 (gage height, 13.60 f';, backwater 

from construction); minimum, 0.6 ofs Sept. 3-6, 10-14; minimum daily, 0.6 cfs Sept. 4, 

5, 11-13.

1959-56: Maximum discharge, 835 cfs Aug. 19, 1955 (gage height, 13.64 ft), from 

rating curve extended above 330 cfs by logarithmic plotting; maximum gage height, 13.72 

ft Aug. 20, 1955 (backwater from Mystic Lake); no flow for part of Oct. 10, 12, 1950, 

caused by pumpage from gage pool; minimum daily discharge, 0.25 cfs Oct. 10, 1950.

Remarks. Records good except those for period of no gage-height record, which are fair. 

Flow affected by diversions for industrial use and for municipal supply of Woburn and 

Winchester, and by wastage and leakage frpm Winchester Reservoirs. Occasional regulation by mills above station.

Rating tables, water year 1955-56 (gage height, in feet, and discharge,

in cubic feet per second) 

(Backwater'from construction Oct. 15-20, Nov. 4-9, 11-14, Jan. 9-15)

Oct. 1 to Nov. 5 Nov. 6 to Sept. 30

10.7

10.9

11.2

11.5

12.0

12.5

20

45

83

184

326

10.24

10.3

10.4

10.5

10.6

10.7

0.6

1.05

2.2

3.9

6.2

9.1

10.9 

11.1 

11.4 

11.7 

1Z.O 

12.5

18

31

64

115

181

326

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

a20

a!7

*a!5

14

13

11

32

30

28

25

19

15

14

21

178

266

 231 283

182

148

99

74

71

70

68

62

59

57

51 

49

72

2,294

74.0

-

-

Nov.

70

73

66

101

274

*280

199

157

*129

111

163

162

129

127

117

109

102

88

72

72

65

60

56

52

49

46

41

39

36 

30

3,075

102

-

-

Dec.

28

30

32

37

50

50

43

36

31

27

20

23

20

18

19

19

19

18

*17

15

13

12

11

8.4

9.1

9.5

9.5

*8.8

7.8 

7.4

7.2

655.7

21.2

-

-

Jan.

7.0

6.2

6.2

7.2

7.4

7.4

7.2

21

241

294

241

197

186

157

137

117

107

93

 79

65

43

44

44

41

41

38

36

35

32

44

46

2,427.6

78.3

-

-

Feb.

41

41

46

37

37

33

106

104

96

75

69

148

150

115

100

93

77

66

59

58

*52

43

40

36

52

77

72

69

56

2,048

70.6

-

-

Mar.

"So 47

65

75

78

76

104

113

91

78

73

70

71

72

66

4.9

53

58

48

58

61

79

88

70

70

60

55

*53 

59

61

2,174

70.1

-

-

Apr.

66

84

106

123

157

202

202

186

171

157

167

164

153

135

123

123

135

125

113

93

82

73

69

75

70

63

61

48

84 

100

3,510

117

-

-

Calendar year 1955: Max 612 Mln 0.75 Mean 43.2

May

89

73

*66

65

62

48

45

42

38

40

40

31

36

34

29

14

19

19

22

31

26

23

23

24

22

13

19

18

16 

14

21

1,062

34.3

-

-

June

22

18

26

36

*34

27

21

17

16

15

18

18

11

10

9.1

7.6

7.4

6.5

5.6

3.1

3.6

4.7

3.4

2.3

3.4

4.8

3.0

2.7

1.9

 ' 

359.55

12.0

-

"

Cfsm -

July

1.45

2.4

2.1

1.35

2.3

4.2

3.0

2.7

4.7

2.7

2.2

1.95

2.5

5.4

3.5

3.0

2.9

2.5

2.1

2.4

2.1

4.4

2.8

2.4

2.2

2.0

2.0

1.2

1.1 

1.15

1.2

77.90

2.51

-

"

In, -

Aug.

1.25

2.5

2.5

1.05

1.05

.95

.9

.85

.8

1.45

.8

.8

1.15

1.2

1.25

1.2

1.05

.9

1.0

.9

1.2

liO

.8

.85

.75

.75

"765 5. 9

765 

.95

.8

37.85

1.22

-

~

Sept.

0.75

1.1

.65

.6

.6

.9

^75

.65

.65

.6

.6

.6

1.05

.9

1.2

1.35

.85

.9

1.75

1.35

.8

1.05

5.6

1.8

1.0

.85

3.5

1.2

 8

40.55

1.35

-

"

Water year 1955-56: Max 294 Mln 0.6 Mean 48.5 Cfsm - In. -

Peak discharge (base. 170 of a). Oat. 17 (6:30 a.m.) 313 ofs (13.225 ft); Nov. 5-6 (12 p.m. to 

3 a.m.) 326 flfs (13.295 ft); Nov. 11 (6 to 8 a.m.) 176 ofs (12.26 ft); Jan. 9 (10 p.m.) 378 ofs 

(13.60 ft); Apr. 6 (7 to 11 p.m.) 218 ofs (12.14 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement, weather records, 

recorded range in stage, and records for stations on nearby streams.
114 CHARLES RIVER BASIN

Charles River at Charles River Village, Mass.

Location. Lat 42°15'23", long 71°15'42", on right bank 0.25 mile downstream from highway 

bridge at Charles River Village, Norfolk County, 0.8 mile downstream from Noanet 

Brook, and 1.3 miles northeast of Dover.

Drainage area. 184 sq mi.

Records available. October 1937 to September 1956.

Gage.--Water-stage recorder and concrete control. Datum of gage is 89.76 ft above mean 

sea level, datum of 1929.

Average discharge. 19 years, 301 cfs (adjusted for diversions).

Extremes.--Maximum discharge during year, 1,480 cfs Apr. 11 (gage height, 5.37 ft); maximum gage height, 5.61 ft Nov. 8, 9; minimum discharge, 23 cfs Aug. 25.

1937-56: Maximum discharge, 3,220 cfs Aug. 23, 1955 (gage height, 9.24 ft); minimum, 0.5 cfs Oct. 24, 1952.

Flood in March 1936 reached a discharge of 3,170 cfs, by computation of flow over 

dam at site a quarter of a mile above station.

Remarks.--Records excellent. Diversion above station for municipal supply of Wellesley 

and Needham. Occasional diversion since 1951 from Sudbury River basin to Charles 

River.

Rating tables, water year 1955-55, except periods of ice effect 

height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used Jan. 11-13)

0.9 

1.0 

1.5 

2.0

Oct. 1 to Jan. 13

91 3.0 648

124 4.0 924

282 6.0 1,600

Jan. 14 to Sept. 30

1.0 126

3.0 

4.0 

5.4

282

420

720

1,020

1,490

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

318

303

288

267

249

249

332

351

383

395

395

385

361

329

475

654 

874

960

*1,070

1.140

1,140

1,080

992

*913

840

*762

692

*636

595

562

*602

18,503

600

+4.84

Nov.

602

624

646

706

1,080

1,170

1,300

1,420

1,450

1,370

1,340

1,250

1,140

1,090

1,050

998 

952

885

845

801

762

717

677

646

609

580

546

524

508

*481

26,750

892

+4.80

Dec.

455

431

416

436

464

450

457

445

419

b385

358

b330

b295

257

258

b220 

222

219

213

bl95

bl75

b!65

bl50

146

156

153

*160

149

146

135

131

8,521

278

+5.02

Jan.

124

bllO

117

121

128

135

135

b!35

474

731

983

1,210

1,400

1,420

1,380

1,320 

1,240

bl.110

bl,000

915

828

756

687

b580

b545

495

b420

b400

382

395

*b420

20,096

648

+4.51

Feb.

441 462"

483

468

489

492

554

597

630

569

593

825

876

942

996

1,000 

936

882

b850

762

723

b665

b615

b550

540

b560

576

b615

*b620

19,521

673

+4.28

Mar.

606

591

594

615

639

656

*741

795

822

825

831.

819

798

783

759

732 

b605

b655

b570

b490

b640

b675

675

b635

b595

633

612

612

*612 

618

603

20,846

672

+4.96

Apr.

615

651

717

795

930

1,090

1,210

1,340

1,410

1,440

1.470

1,450

1,430

1,370

1,300

1,280 

1,250

*1,220

1,190

1,130

1,080

1,000

942

894

834

786

735

693

672 

*651

31,585

1,053

+4.60

May

627

612

606

594

570

546

513

486

468

447

414

389

361

343

320

306 

303

306

300

275

261

240

225

225

231

222

222

231

237 

231

*231

11,343

365

+5.58

June

258

273

282

337

361

361

356

329

282

237

210

192

201

204

157

170

166

157

157

153

150

137

126

120

113

104

97

*94

88 

82

5,954

198

+6.20

July

85

80

74

65

80

123

135

150

163

157

145

136

120

129

150

163 

170

1ST

136

120

113

123

123

126

123

113

104

91

82 

*71

94

3,703

119

+6.46

Aug.

77

58

56

54

51

47

44

44

47

42

40

38

36

38

34

33 

33

32

32

30

40

40

38

33

24

24

24

32

42 

*34

40

1,237

39.9

+5.17

Sept.

49

51

51

51

51

54

100

80

80

80

74

68

65

71

68

74 

74

74

68

60

56

51

51

68

55

68

65

*90

125

166

2,149

71.6

-7.33

Adjusted for diversion

Mean

Of sra

605 

3.29 

3.79

89t 4.8" 

5.44

Calendar year 1955: 

Water year 1955-55:

283 

1.54 

1.77

653 

3.55 

4.09

677 

3.68 

3.97

577 

3.68 

4.24

1,057 

5.74

6.41

371 

2.02 

2.33

Observed

Max 3,130 Min 30 Mean 456 

Max 1,470 Min 24 Mean 466

205 

1.11 

1.24

126 

0.635 

0.79

45.1 

0.245 

0.28

64.3 

0.349 

0.39

Adjusted

Mean 461 Cfsm 2.51 In. 33.98 

Mean 470 Cfsm 2.55 In. 34.74

* Discharge measurement made on this day.

t Diversions for municipal supply of Wellesley and Needham and diversion from Sudbury River basin 

to Charles River, equivalent in cubic feet per second; records furnished by municipalities and Water 

Division of Metropolitan District Commission.

b Stage-discharge relation affected by ice.
CHARLES RIVER BASIN

Mother Brook at Dedham, Mass.

Location. Lat 42°15 I 19", long 71°09'58", on right bank at upstream side of East Street 

Bridge, at Dedham, Norfolk County, 0.4 mile downstream from point of diversion from 

Charles River.

Records available.--October 1931 to September 1956.

Orage. Float gage read twice daily. Datum of gage is 0.03 ft below mean sea level, datum 

of 1929. Prior to Dec. 9, 1931, water-stage recorder at same site and datum.

Average discharge.--25 years, 86.9 cfs.

Extremes. Maximum discharge during year, 480 cfs Nov. 11 (gage height, 90.20 ft, from 

graph based on gage readings); no flow Aug. 18 to Sept. 2.

1931-56: Maximum discharge, 970 cfs Aug. 24, 1955 (gage height, 92.90 ft, from 

graph based on gage readings); no flow at times.

Remarks. Records good. Mother Brook Is a diversion from Charles River to Neponset 

River through Dedham and Hyde Park.

Revisions (water years).--MSP 1301: 1932(M).

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second)

(Backwater from debris or shifting-control method used Jan. 27-29, 

Jan. 31 to Feb. 7, July 26, Aug. 18 to Sept. 13)

:t.

86

86

87

87

88,

89,

90,

I

.0

.5

.0

.5

,0

.0

,2

to Mar. 11

14

30

59

106

164

302

480

85,

85,

85,

85,

85.

85.

85.

ME

.1

.2

.3

_ ',54

: 6

.8

ir.

0

1.

1.

2.

5.

12

.2

.5

.0

,8

,8

,9

to Sept.

86.0

86.2

86.5

87.0

87.5

88.0

90.0

13

10

16

28

58

101

157

448

Sept.

85,

85

85

85,

.3

.4

.6

.9

14-30

2.2

4.0

9.1

20

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6 

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Oct.

68

65

64

58

55

f

*69

77

82

86

88

87

80

102

174

248

298

320

344

363

370

357

336

323

296

273

246

222 

198

196

5,654

182

-

"

Nov.

197

193

193

208

316

390 

409

*434

459

462

467

456

434

415

392

370

355

334

316

305

*285

270

250

236

219

201

186

172

160

150

9,234

308

-

-

Dec.

136

124

119

120

126

125 

121

117

110

103

94

84

74

65

59

52

46

43

40

36

30

26

24

21

21

23

22

20

19

*18

r?

2,035

65.6

-

-

Jan.

16

16

15

T6

16

17 

17

17

55

145

232

308

368

404

420

418

410

392

367

334

303

275

239

207

186

*173

157

140

122

120

127

6,032

195

-

-

Feb.

124

124

134

133

134

135 

156

173

180

186

197

225

249

263

278

291

291

284

268

256

240

224

208

191

*180

178

177

181

182

5,842

201

-

-

Mar.

178

176

180

185

184

189 

203

221

239

242

245

234

230

230

227

218

206

195

188

156

153

170

182

190

180

*178

174

169

166

170

170

6,028

194

-

-

Apr.

171

TTT

190

209

238

282 

320

366

403

424

439

444

442

434

421

410

404

391

376

361

344

330

315

300

280

260

240

225

210 

200

9,603

320

-

"

May

185

TTS

170

*160

155

150 

140

130

120

111

104

97

89

81

72

66

62

58

53

46

38

35

32

28

£2

28" 22

30

30

31

31

2,551

82.3

-

"

June

32

35

40

44

49

51 

50

47

44

38

38

36

35

38

34

28

25

23

20

18

17

16

15

12

11

9.3

7.8

7.0

6.7 

5.7

832.5

27.8

-

"

July

5 2

5 2

4 4

3 6

3 6

8.0

10

13

16

. 17

17

16

15

16

17

18

2020-

17

14

11

12

11

11

10

8.7

*8.2

7.6

6.1 

4.7

4.1

350.4

11.3

-

-

Aug.

5.0

TTS

2.4

1.7

1.3

.9

.8

.7

.6

.5

.5

.3

.2

.2

.2

.1

.1

0

0

0

0

0

0

0

0

0

0

0

o 

o

0

19.1

0.616

-

-

Sept.

0

H

.1

.1

*.l

.1 

1.4

2.4

1.8

1.7

1.3

1.0

2.7

5.9

8.3

7.5

7.8

7.5

5.9

5.4

4.5

3.0

2.7

4.7

5.9

5.4

5.2

8.6

14 

20

135.0

4.50

-

-

Calendar year 1955: Max 960 Mln 0 Mean 120 Cfsm - In. -

Water year 1955-56 : Max 467 Mln 0 Mean 132 Cfsm - In. -

Discharge measurement made on this day.
116 CHARLES RIVER BASIN

Charles River at Walthara, Maas.

Location. Lat 42e 28'20", long 71 e 14'03", on right bank 800 ft downstresm from Moody 

Street Bridge In Waltham, Middlesex County, and a third of a mile uprtream from Beaver 

Brook.

Dra: jga.--227 sq ml, excludes 83.6 sq ml drained by Stony Brook from which flow Is 

fror municipal supply of Cambridge.

Records available. October 1903 to October 1909 (figures of average weekly discharge, 

equivalent to records of unadjusted discharge at present site), August 1931 to September 1956.

Gage.--Water-stage recorder and concrete control. Datum of gage Is 20.02 ft above mean 

sea level, datum of 1929. Prior to July 10, 1904, at dam 700 ft upstream and from 

July 10, 1904, to Oct. 2, 1909, at dam 0.7 mile downstream at different datums; discharge computed from flow over dam and through wheels and gates of Bcston Manufacturing 

Co. and Waltham Bleachery, respectively.

Average discharge. 25 years (1931-56), 376 cfs (adjusted for diversion?, wastage, and 

leakage).

Extremes.--Maximum discharge during year, 1,990 cfs Nov. 11 (gage height, 4.76 ft); minimum, 17 cfs Sept. 28; minimum daily, 26 cfs Aug. 29.

1931-56: Maximum discharge, 2,540 cfs Mar. 19, 1936 (gage height, 4.79 ft); maximum 

gage height, 5.35 ft Aug. 19, 1955; minimum discharge, 0.1 cfs Oct. 1, 12, 3943; minimum daily, 0.2 cfs Oct. 4, 1943.

Remarks.--Records good. Plow affected by wastage from Stony Brook Reservoir, wastage and 

leakage from Norumbega Reservoir, diversion at times from Lake Cochituate and also at 

times since 1951 from Sudbury River basin, diversion to Mother Brook,^ and diversions 

for municipal supply of Wellesley, Needham, and Dedham, all above station. No diversion 

during year from Lake Cochituate. Low flow completely regulated by Foston Edison Co. 

powerplant above station.

Revisions (water years). WSP 781: 1933(M). WSP 851: Drainage area. WSP 971: 1942.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

1O

11 

12

13

14 

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Yean

(t)

OCt.

283

272

27T

280

333

312

316

320

323

331

359 

359

367

419 

651

670

1,O3O

1.090

1,080

1.O6O

1,O30

*1,020

995

974

934

869

818

776

710

666

734

19,657

634

136

Nov.

710

704

704

782

1,320

1,510

1,440

1,450

1,490

1,470

1.64O 

1,520

1,430

1,390 

1,270

1,200

1,13O

1,040

964

908

860

8ZO

780

740

*700

666

628

606

505

556

30,917

1,031

213

Dec.

512

496

474

49O

5O6

484

474

479

468

440

413 

386

346

311 

294

272

252

238

*232

213

194

182

171

157

157

159

157

151

146

143

135

9,532

307

74.0

Jan.

128

121

125

123

123

121

123

164

568

722

999

1,100

1,250

1.560 

1,340

1,320

1,280

1,180

1,080

1,020

*878

740

682

605

550

523

496

435

391

391

413

20,351

656

190

Feb.

413 430-

468

435

446

457

633

650

644

644

660 

824

872

890 

1.050

985

957

932

860

854

*806

720

694

644

633

655

633

666

638

20,173

696

170

Mar.

622

622

628

644

666

666

752

842

854 8"4T

824. 

812

806

806 

818

770

710

670

644

630

572

606

644

672

640

638

611

589

 611

650

655

21,516

694

157

Apr.

680 682"

740

806

926

1,130

1,290

1,410

1,470

1,550

1.600 

1,580

1,550

1,520 

1,500

1,5OO

1,510

1,450

1,380

1,280

1,220

1,170

1,120

1,060

978

926

860

806

824

812

35,310

1,177

257

May

752 699"

660

644

616

594

*584

545

518

501

484 

452

418

288 

252

408

391

361

366

361

351

342

324

303

283

262

280

280

269

2 62

276

13,106

423

-61.8

June

283

272

303

386

356

342

351

351

337

315

286 

258

248

*242 

225

216

197

179

174

168

159

157

146

138

133

118

116

107

1OO

96

6,759

225

28.2

Jlly

91

87

83

79

85

113

116

123

148

US

138 

135

135

143 

138

143

146

146

143

138

133

140

*135

128

125

128

116

107

96

89

83

J,753

121

23.1

Aug.

87

85

75

67

64

60

60

59

55

60

57 

54

52

57 

48

44

43

42

38

37

*44

44

40

42

38

35

32

29

2630"

33

1,537

49.6

11.9

Sept.

36

4f

43

44

46

52

~§T 121

81

81

79 

77

71

75

81

83

81

73

69

75

67

59

57

81

69

66

103

67

85

100

2,156

71.9

1.14

Adjusted for diversions, wastage, and leakage

Mean 

Cf sm 

In.

771 

3.40 

3.91

1,244 

5.48 

6.11

Calendar year 1955: 

Water year 1955-56:

381 

1.68 

1.94

847 

3.73 

4.30

865 

3.81 

4.11

851 

3.75 

4.32

1,434 

6.32 

7.05

ObservedMax 2,330 Mln 14 Mean 497 

Max 1,640 Min 26 Mean 505

361 

1.59 

1.83

253 

1.11 

1.25

144 

C.634 

0.73

61.5 

0.271 

0.31

73.0 

0.322 

0.36

Adjusted

Mean 593 Cfem 2.61 In. 35.49 

Yean 604 Ctsm 2.66 In. 36.22

Discharge measurement made on this day.

suDtjly of Wellesley, Nee'lham, and Dedham,
NEPONSET RIVER BASIN

Neponset. River at Norwood, Mass.

Location. Lat 42t> 10'39", long 71°12'05", on left bank 200 ft upstream from Pleasant

Street Bridge, 200 ft downstream from New York, New Haven fr Hartford Railroad "bridge,

0.45 mile downstream from Hawes Brook, and 0.5 mile south of Norwood, Norfolk County.

Drainage area.--35.2 sq mi.

Records available. October 1939 to September 1956. October 1939 monthly discharge only, 

published in WSP 1301.

Gage.--Water-stage recorder. Datum of gage is 44.04 ft above mean sea level, unadjusted. 

Average discharge.--17 years, 50.4 cfs.

Extremes. Maximum discharge during year, 486 cfs Nov. 5 (gage height, 11.32 ft); minimum 

daily, 6.4 cfs July 2.

1939-56: Maximum discharge, 1,490 cfs Aug. 19, 1955 (gage height, 14.65 ft, from 

floodmarks); minimum daily, 2.3 cfs Oct. 23, 1949.

Flood of July 24, 1938, reached a stage of 11.05 ft, from floodmarks.

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

Flow regulated by mills and reservoirs above station. Several diversions above station 

for municipal and industrial use.

Rating tables, water year 1955-56 (gage height, in feet, and

discharge, in cubic feet per seccnd) 

(Backwater from debris Oct. 1-15, 21-31)

7.4

8.0

9.0

10.0

11.0

105

188

283

432

Nov. 1 to Sept. 30

4.5 

7. 

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Oct.

65

60

53

50

45

44

73

*92

90

79

75

61

51

63

166

290

*350

312

257

207

1-78

121

126

134

130

127

124

120

118

107

142

3,910

126

-

-

Nov.

150

145

138

152

404

465

405

288

254

201

190

220

215

196

191

174

172

158

145

140

*137

131

130

140

132

120

115

110

107

100

5,625

188

-

-

Dec.

94

80

86

93

109

106

95

85

72

77

70

68

68

57

54

52

45

43

41

36

35

32

30

28

27

30

28

27

26

*26

25_

1,745

56.3

-

-

Jan.

24

24

25

32

34

29

27

38

E09

341

346

311

282

237

192

161

148

145

140

130

115

100

92

86

82

78

76

73

73

90

*108

3,848

124

-

-

Feb.

96

97

107

100

100

98

135

150

140

125

114

187

169

140

146

142

128

120

117

117

110

100

94

90

*101

124

118

120

108

3,493

120

-

-

Mar.

99

101

118

126

125

116

130

154

160

139

125

122

115

118

125

124

106

107

114

108

102

110

117

121

108

110

105

106

*108

121

122

3,662

118

-

-

Apr.

1C9

145 its

172

216

257

252

257

259

265

263

246

218

200

186

195

221

*205

172

153

146

129

124

121

115

110

105

102

114

117

5,355

178

-

-

May

111

96

94

*89

77

79

74

71

68

65

eo

57

6O

55

53

55

51

51

47

46

46

37

41

41

37

34

50

49

45

36

49

1,824

58.8

-

-

June

50

46

56

77

71

52

46

44

31

34

33

30

23

24

22

19

22

22

16

14

13

17

17

11

16

14

12

11

10

10

863

28.8

-

-

July

6.8

6.4

F7o

7.2

26

5-

37

27

30

22

*18

17

16

35

38

37

28

20

16

14

16

28

32

23

23

21

*17

15

11

13

15

663.4

21.4

-

-

Aug.

16

15

ie

17

L4

15

21

20

C 1 1

20

18

13

14

19

18

17

18

17

12

13^

18

16

16

20

22_

16

17

16

16

15

17

520

ie.8

-

-

Sept.

It15

17

16

*16

25

43

34

29

24

29

16

16

16

15

17

20

21

19

17

16

15

16

20

22

20

19

35

50

30

664

22.1

-

-

Calendar year 1955: Max 1,260 Min 8.3 Mean 90.9 Cfsm - In. -

Water year 1955-56: Max 465 Min 6.4 Mean 87.9 Cfsm - In. -

* Discharge measurement made on this day.

Note.--No gage-height record Oct. 2, 9, 23, 29, 30, Nov. 11-13, 19, 20, 24, 27, 30, Dec. 3, 4, 10, 

11, Dec. 17 to Jan. 5, Jan. 18-30, Feb. 4-10, 22-24, July 6-11, Sept. 3-7, 13, 15-30; discharge estimated on basis of 3 discharge measurements, recorded range in stage when available, appearance of 

stage graph for adjacent days, engineer's notes, and records for East Branch Neponset Rive" at Canton and Wading River near Norton.
NEPONSET RIVER BASIN

East Branch Neponset River at Canton, Mass.

Location. Lat 42°09'ie", long 71°08'47", on right bank 100 ft downstream from Washington 

Street Bridge at Canton, Norfolk County, 200 ft downstream from Forge Pond Dam, and 

900 ft downstream from Massapoag Brook.

Drainage area.--26.7 sq mi.

Records available. October 1952 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 85 ft (from topographic map).

Extremes.--Maximum discharge during year, 598 cfs Nov. 5 (gage height, 4.77 ft); minimum 

daily, 1.3 cfs Aug. 19.

1952-56: Maximum discharge, 1,750 cfs Aug. 19, 1955 (gage height, 8.18 ft), from 

rating curve extended above 690 cfs by logarithmic plotting; minimum daily, that of 

Aug. 19, 1956.

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

Flow regulated by ponds above station.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Nov. 4

1.4 36

2.0 93

3.0 226

4.0 410

Nov. 5 to Jan. 9 

24

Jan. 10 to Sept. 30

1.3 

1.5 

2.0 

3.0 

4.0 

5.0

226

410

655

1.2

1.9

3.3

8.0

1.2 18

0.5 

.6 

.7

1.5 35

2.0 83

3.0 226

4.0 410

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Oct.

*50

51

47

42

40

38

90

88

72

62

56

51

49

47

118

216

263

209

165

145

129

120

110

104

97

95

89

83

82

104

2,995

96.6

3.62

4.17

Nov.

106

100

91

114

486

360

245

226

229

211

239

a220

a!90

*186

176

160

156

138

127

123

118

111

103

103

94

84

80

63

87

Z±

4,820

161

6.03

6.71

Dec.

70

67

70

78

95_

83

74

69

68

a64

a60

a56

a52

aSO

*51

52

47

44

43

a41

a38

a36

a34

a34

a32

a31

a29

a28

a26

28

a25

1,575

50.8

1.90

2.19

Jan.

a24

a24

a25

a33

33

30

28

33

226

301

284

242

220

194

180

170

163

*162

151

138

120

111

103

95

89

82

78

74

70

107

3,671

118

4.42

5.11

Feb.

89

81

102

85

82

81

128

147

117

110

114

207

170

138

131

122

110

101

105

102

*95

85

80

73

85

120

99

37

89

3,155

109

4.08

4.39

Mar.

81

85

106

107

99

89

*110

137

127

107

101

96

89

97

116

103

83

99

93

89

96

101

106

99

97

97

*91

91

90

103

106

3,091

99.7

3.73

4.31

Apr.

114

128

147

154

191

205

189

202

228 2T6"

207

183

168

157

150

169

186

150

133

116

116

107

103

103

95

89

89

87

103

106

4,391

146

5.47

6.12

May

94

79

73

*69

62

64

63

55

51

54

50

48

46

43

41

39

42

40

38

41

41

37

35

42

42

40

43

49

42

38

48

1,549

50.0

1.87

2.16

June July

66 13

49 12

70 5.9

88 4.7

70 10

54 27

45 29

40 23

37 24

37 23

36 20

33 17

30 16

36 23

29 30

*24 24

26 19

26 17

23 15

22 *14

26 14

23 26

20 27

18 21

18 18

15 15

15 13

15 12

14' 12

13' 11

-------- 11

1,018 546.6

33.9 17.6

1.27 0.659

1.42 0.76

Aug.

10

9.2

8.0

7.5

7.2

8.5

8.3

8.7

9.7

9.2

4.6

2.6

6.2

6.5

6.5

7.0

5.4

2.2

1.3

T7S

5.1

5.4

5.9

*5.4

2.1

1.4

5.5

5.3

5.6

6.0

5.1

185.8

5.99

0.224

0.26

Sept.

1.4

1.9

1.9

7.5

8.1

9.6

74

24

18

13

11

8.6

9.4

9.4

8.0

9.4

12

12

10

9.2

9.2

8.3

8.3

11

*12

11

9.7

16

26

17

386.9

12.9

0.483

0.54

Calendar year 1955: Max 1,360 Min 2.1 Mean 78.9 Cfsm 2.96 In. 40.12

Water year 1955-56: Max 486 Min 1.3 Mean 74.8 Cfsm 2.80 In. 38.14

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records 

and records for Wading River at West Mansfield.

recorded range in stage
WESTPORT RIVER BASIN IT 

Adamsville Brook at Adamsville, R. I.

Location.--Lat 41°33'30", long 71°07'47", on right bank 0.2 mile upstream from milldam at 

Adamsville, Newport County, and 0.7 mile upstream from mouth.

Drainage area. 8.6 sq mi, approximately.

Records available. October 1940 to September 1956.

Gage. Water-stage recorder. Concrete control since Sept. 16, 1942. Altitude of gage is 

15 ft (from topographic map).

Average discharge. 16 years, 13.6 cfs.

Extremes. Maximum discharge during year, 166 cfs Oct. 17 (gage height, 5.04 ft); minimum, 

0.14 cfs Sept. 14, 15.

1940-56: Maximum discharge, 269 cfs Sept. 12, 1954 (gage height, 5.80 ft), from 

rating curve extended above 210 cfs; minimum, 0.03 cfs Sept. 23, 24, Oct. 3, 4, 1950.

Remarks. Records good.

Rating tables, water year 1955-56 (gage height in feet, and discharge, 

In ciibiG feet per second)

Oct. 18 to Sept. 30

3.3

3.4

3.5 

3.7

4.1 

7.7

4.0

4.5

5.0

101

161

3.02

3.06

3.10

3.15

0.14

.29

.52

1.07

Note. Same as preceding 

table above 3.5 ft.

Discharge, In cubic feet per second, water year October 1955 to September 193

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

17

18

15

11

8.7

8.3

*14

18

18

15

12

*9.3

8.1

6.9

12

58

149

90

52

34

25

20

17

15

14

13

13

12

12

11

27

753.3

24.3

2.83

3.26

Nov.

39

35

27

26

117

126

*65

43

31

25

31

42

37

36

40

36

33

28

24

23

20

20

20

23

23

21

18

17

T8

17

1,061

35.4

4.12

4.59

Dec.

16

14

13

15

20

21

18

15

12

11

10

9.5

8.8

8.6

11

12

12

11

9.5

8.2

6.4

5.2

4.9

5.4

6.8

6.6

6.1

5.1

*4.8

5.2

4.9

317.0

10.2

1.19

1.37

Jan.

4.4

3.8

4.2

4.8

5.7

5.7

5.7

5.9

25

6_7

63

51

43

36

31

27

24

20

20

*18

16

14

12

12

10

9.8

9.5

8.8

9.8

16

29

C12.1

19.7

2.29

2.65

Feb.

30

25

39

39

31

28

E9

63

42

31

29

57

57

39

29

24

20

25

42

43

31

23

*17

15

17

20

20

28

33

956

33.0

3.84

4.13

Mar.

26

23

30

29

25

24

30

53

60

42

30

25

23

28

46

41

24

24

23

20_

20

25

31

39

40

39

37

39

39

52

*58

1,045

33.7

3.92

4.52

Apr.

52

49

55

43

35

28

56

8252"

35

27

23

20

20

31

39

33

25

21

20

18

16

15

13

14

14

14

14

17

934

31.1

3.62

4.04

May

17

IE

18

18

17

15

18

18

16

*14

121111

10

9.5

10

11

10

10

9.5

8.8

8.2

7.8

7.4

6.8

6.4

11

21

23

17

13

401.4

12.9

1.5U

1.74

June

11

9.2

14

34

5-L

2o

15

11

8.8

7.8

7.0

6.2

5.4

4.9

4.2

5.6

3.2

2.8

2.6

2.45

*2.35

2.8

2.6

2 ]45

2.25

2.05

1.95

1.7

1.5

233.40

7.78

0.905

1.01

July

1.35

1.3

1.14

 i . oo

l.S

7.4

- f . e"

7. 'j

Aug.

1.8

1.6

1.35

1.14

.94

.88

.76

.71

14 .66

20

18

9.8

7.6

11

12

*9.2

6.6

4.8

3.7

3.2

3.5

12

13

10

7.0

5.1

4.0

3.4

3.0

2.35

2.05

215.79

6.96

0.809

0.95

.fil

.C2

.74

1.21

.94

.71

.61

.52

.45

.59

.36

.60

.76

.66

.56

.48

.42

.36

.32

.29

.27

.32

LI. 94

0.7U8

0.082

0.09

Sept.

0.32

.32

.27

.23

*.22

.21

.21

.19

.19

.19

.19

.18

.16

.16

.17

.38

.34

.36

.36

.42

.48

.45

.39

.39

.32

. 32

.32

.72

.88

.71

10.05

O.Z,35

O.U39

0.04

Calendar year 1955: Max 149 Mln 0.26 Mean 16. U Cfsm 1.86 in. 25.27

Water year 1955-56: Max 149 Mln 0.16 Mean 17.9 Cfsm 2.08 In. 28.37

P;ak discharge (base, 12U cfs). Oct. 17 (8 a.m.) 166 cfs (5.04 ft); Nov. 5 ( 10:30 to 12 p.m.)

cfs (5.00 ft).

Discharge measurement made on this
TAUNTON RIVER BASIN

Taunton River at State Farm, Mass.

Location. Lat 41° 56 '05", long 70° 57 '18", on right bank at State Farm, Plymouth County, 

1 mile upstream from Saw Mill Brook and 3^ miles northwest of Mlddleboro.

Drainage area . 260 sq ml.

Records available. October 1929 to September 1956.

Gage. Water-stage recorder. Datum of gage Is 9.61 ft above mean sea level, datum of 

1929. Prior to Oct. 1, 1931, Inverted staff gage at site 40 ft downstream with zero 

of gage at 10.02 ft on present gage. Oct. 1, 1931, to June 8, 1934, staff gage and 

June 9, 1934, to Oct. 12, 1939, water-stage recorder, at site 40 ft downstream at present datum.

Average discharge. 27 years, 472 cfs (adjusted for diversions).

Extremes. --Maximum discharge during year, 2,860 cfs Nov. 7 (gage height, 9.97 ft); minimum, 51 cfs Sept. 13, 14; minimum dally, 51 cfs Sept. 13.

1929-56: Maximum discharge, 4,010 cfs Aug. 21, 1955 (gage height, 13.02 ft); minimum, 8 cfs Sept. 10, 1944; minimum daily, 9 cfs Sept. 9-12, 1944.

Remarks . Records excellent. Water diverted above station from Nemasket River for municipal supply of Taunton and New Bedford; water diverted from Silver Lake by pumpage Into 

Taunton River basin above station for municipal supply of Brockton and several towns. 

Plow regulated by reservoirs and small powerplants above station.

Re visions (water years). WSP 756: Drainage area. WSP 781: 1934. WSP 1051: 1933. 

WSP 1201: 1931. WSP 1301: 1930(M), 1933(M), 1935(M).

Rating tables, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

Oct. 1 to Nov. 6 Nov. 7 to Sept. 3O

4.0

6.0

10.0

238

1,160

2,870

3.1 

3.4 

3.7

81

148

4.0

6.0

10.0

265

1,220

2,870

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

4O6

424

392

352

317

295

414

510

491

464

437

*383

343

278

511

1,120

1,660

1.910

1,810

1,540

1,290

1,080

931

825

755

705

660

610

560 

496

560

2Z.5Z9

727

29.5

Nov.

745

735

715

730

1,710

2,590

*2.640

2,680

2,330

1,920

1,730

1,730

1,630

1,480

1,410

1,310

1,230

1,170

1,060

970

960

950

890

860

880

850

795

770

805 

785

39,260

1,309

29.4

Dec.

650

675

680

620

685

76O

770

675

600

555

495

495

455

414

422

418

404

400

350

281

314

296

226

171

200

242

Z52

238

*234 

224

212

13,413

433

28. Z

Jan.

204

185

158

193

229

238

237

223

758

1,520

1,930

2,280

2.440

2,350

2,080

1,770

1,510

1,250

1,110

*1,080

1,010

935

865

800

775

635

595

605

535 

605

840

29,945

966

30.1

Feb.

845

810

985

995

925

920

1,130

1,410

1,420

1,300

1,200

1,410

1,640

1,560

1,380

1,250

1,120

*1,020

965

970

950

965

785

720

690

850

920

950

960

31,045

1,071

3O.9

Mar.

920

905

1,040

1,120

1,160

1,110

1,140

1,370

1.490

1,420

1,260.

1,140

1,060

1,050

1,130

1,120

940

895

840

850

935

895

1,020

1,110

1,090

1,090

1,080

1,080

1,100

1,180

*1 ,280

33,800

1,090

28.5

Apr.

1,370

1,530

1,730

1,860

1,970

2,060

2,030

1,960

2.110

2,110

1,910

1,690

1,460

1,260

1,140

1,120

1,210

1,220

1,130

1.O7O

1,000

930

885

810

685

680

755

815

660 

750

39,910

1,330

29.5

May

775 755"

720

695

675

660

*680

675

650

605

560

585

560

560

545

540

535

470

404

432

440

427

409

400

360

342

4O9

445

495 

470

465

16,743

540

28.8

June

460

445

505

745

760

705

595

505

432

391

364

342

301

364

328

296

278

260

229

197

174

168

189

197

181

164

194

220

232 

180

10,421

347

29.4

July

197

126

117

*106

101

206

296

256

306

445

436

308

168

327

580

520

432

337

274

224

197

303

368

332

Z83

234

*197

161

140 

137

126

8,240

266

27.4

Aug.

124

117

110

103

99

106

101

101

101

99

101

106

134

126

108

121

94

83

80

75

75

90

86

86

90

80

76

74

72 

70

72

2,960

95.5

32.7

Sept.

70

70

70

66

*66

61

86

103

83

75

68

56

51

54

69

72

85

81

70

74

94

83

97

117

108

97

12Z

183

114 

145

2,590

86.3

29.5

Adjusted for diversions

Mean 

Cf sm

756 

Z.91 

3.35

1.33E 

5. IE 

5.74

Calendar year 1955: 

Water year 1955-56:

461 

1.77 

2.04

996 

3.83 

4.42

1,101 

4.23 

4.57

1,119 

4.30 

4.96

1,360 

5.23 

5.84

569 

2.19 

2.52

Observed

Max 3,970 Min 35 Mean 635 

Max 2,840 Min 51 Mean 685

377 

1.45 

1.62

293

1.13 

1.30

128 

0.492 

0.57

116 

0.446 

0.50

Adjusted

Mean 664 C°sm 2.55 In. 34.63 

Mean 715 C"sm 2.75 In. 37.43

* Discharge measurement made on this day.

t Diversions, equivalent in cubic feet per second, from Nemasket River for municipal supply of 

Taunton and New Bedford, and from Silver Lake into Taunton River basin for municipal supply of
TAUNTON RIVER BASIN 121 

Wading River at West Mansfield, Mass.

Location. Lat 42°00'00", long 71°15'38", on right bank 200 ft downstream fro-n Balcolm 

Street Bridge at West Mansfield, Bristol County, 2 miles upstream from Hodees Brook, 

and 3 miles southwest of Mansfield.

Drainage area.--19.2 sq mi.

Records available. October 1953 to September 1956.

Gage.--Water-stage recorder and concrete control. Datum of gage is 120.85 ft above mean 

sea level, datum of 1929.

Extremes. --Maximum discharge during year, 248 cfs Nov. 7 (gage height, 5.30 f'~,); minimum 

daily, 1.3 cfs Aug. 16.

1953-56: Maximum discharge, 519 cfs Aug. 20, 1955 (gage height, 6.22 f':); minimum 

daily, that of Aug. 16, 1956.

Remarks.--Records good. Flow regulated by Lake Mirimichi. Diversion above station for 

municipal supply of Attleboro.

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Nov. 1 to Sept. 30

3.3 

3.5 

4.0 

4.5

5.0

118

191

2.4

2.5

2.6

2.7

1.1

1.9

3.0

4.5

6.7

13

3.5 38

4.0 68

4.5 117

5.0 191

5.5 292

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

(t)

Oct.

*37

36

33

30

28

28

43

51

52

51

48

43

40

37

54

102

156

170

T64

137

114

95

85

75

75

76

67

63

59

59

72

2,180

70.3

1.37

Nov.

77

75

72

74

170

22S

234

217

185

156

151

150

132

*118

117

105

98

88

76

74

70

67

64

62

62

60

58

56

56

55

3,205

107

1.36

Dec.

48

45

45

48

53

54

51

46

43

39

36

32

30

28

28

*29

28

27

26

26

b24

22

22

22

20

20

19

18

17

17

17

980

31.6

1.35

Jan.

16

16

16

19

19

19

19

18

47

110

162

169

146

115

96

85

b80

*b76

b74

73

66

61

b57

b59

b54

050

47

44

42

45

56

1,956

63.1

1.24

Feb.

b59

55

60

b59

56

55

65

74

74

78

78

101

113

112

107

100

85

82

86

79

*71

63

59

53

56

64

66

71

74

2,155

74.3

1.21

Mar.

66

61

63

66

67

66

73

86

92

81

68

70

70

70

76

b77

b68

b77

b74

b76

b78

73

69

69

b74

69

64

62

60

*65

69

2,199

70.9

1.30

Apr.

70

75

85

94

110

127

134

150

163

154

146

134

125

117

107

117

131

118

105

96

91

83

76

70

64

60

57

55

56

57

3,027

101

1.28

May

58

56

55

54

52

48

*47

45

41

39

40

40

38

36

34

33

33

31

30

30

29

28

27

28

26

23

24

28

28

27

28

1,136

36.6

1.38

June

34

36

42

52

52

45

40

36

31

?e

27

24

22

21

19

17

16

14

13

12

11

11

11

11

11

9.8

8.1

8.4

*9.2

8.7

680.2

22.7

1.41

July

7.5

6.2

5.7

5.5

5.5

15

IS

18

22

21

18

15

13

16

19

17

15

13

12

10

11

16

*16

15

13

11

10

9.5

8.1

7.3

6.7

595.8

12.3

1.38

Aug.

6.0

5.7

4.9

4.0

3.8

4.0

4.2

4.3

5.2

6.4

4.3

4.0

4.2

4.0

3.0

1.3

1.5

1.8

2.3

2.4

3.0

4.2

4.7

*4.3

4.0

3.5

3.2

3.1

3.4

4.0

3.0

117.7

3.30

1.24

Sept.

2.6

3.1

3.C

2.6

2.5

3.7

11

6.4

3.7

3.0

3.0

3 s'.o.0

5.0

3.0

3.4

4.0

3.6

3.2

3.1

3.C

3.1

3.1

4.3

*4.5

3.8

3.5

5.2

6.4

4.9

116.1

3.87

1.34

Adjusted for diversion

Mean 

Cfsm 

In.

71.7 

3.73 

4.30

108 

5.62 

6.29

Calendar year 1955 : 

Water year 1955-56 :

33.0 

1.72 

1.98

64.3 

3.35 

3.86

75.5 

3.93 

4.24

72.2 

3.76 

4.34

102

5.31 

5.94

38.0 

1.98 

2.28

Observed

Max 475 Hin 2.6 Mean 49.0 

Max 234 Hin 1.3 Mean 49.6

24.1 

1.26 

1.40

14.2 5.04 E.E1 

0.740 0.262 0.271 

0.85 0.30 0.30

Adjusted

Mean 50.1 Cfsm 2.61 In. 35.47 

Mean 50.9 Cfsm 2.65 In. 36.08

Discharge measurement made on this day. 

t Diversion, equivalent in cubic feet per 

nished by city of Attleboro.

b Stage-discharge relation affected by ic

second, for municipal supply of Attleboro. Records fur-
122 TAUNTON RIVER BASIN

Wading River near Norton, Mass.

Location.--Lat 41°56i51", long 71°10'38", on left bank 200 ft downstreem from bridge on 

State Highway 140, 0.9 mile upstream from confluence with Rumford River, and if miles 

southeast of Norton, Bristol County.

Drainage area. 42.4 sq mi.

Records available. June 1925 to September 1956.

Gage. Water-stage recorder. Datum of gage is 49.63 ft above mean, sea level, datum of

T929. Prior to Oct. 1, 1930, staff gage at same site at datum 0.62 ft higher. Oct. 1,

1930, to May 4, 1933, staff gage at present site and datum.

Average discharge. 31 years, 72.0 cfs (adjusted for diversion).

Extremes.--Maximum discharge during year, 616 cfs Nov. 6 (gage height, 9.25 ft); minimum, 

3.5 cfs July 3,4; minimum daily, 3.7 cfs July 3,4.

1925-56: Maximum discharge, 1,170 cfs Aug. 20, 1955 (gage height, 10.98 ft); minimum, 0.3 cfs Sept. 10, 1926.

Remarks. Records excellent. Flow regulated by powerplants and ponds sbove station. Diversion above station for municipal supply of Attleboro.

Revisions (water years). WSP 871: 1938. WSP 1301: 1929-33(M).

Rating table, water year 1955-56 (gage height, in feet, £

discharge, In cubic feet per second) 

(Stage-discharge relation affected by ice Mar. 19, 20)

4.6

4.7 

5.0 

5.2 

5.5

3.0 

4.7

20

39

6.0 

7.0 

8.0 

9.0 

10.0

82

197

344

554

830

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2 

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

1920 -

21

22

23

24

25

26

27

28

29 

30

31

Tbtal

Mean

(t)

Oct.

78

73 

63

67

58

58

90

108

106

98

92

83

70

69

112

268

424

382

310

265

218

189

167

155

142

128

128

104

101

*123

4,428

143

1.37

Nov.

138

153 

137

146

430

586

455

368

309

266

266

270

248

236

222

211

200

170

162

152

147

141

132

124

117

101

103

108

107 

*99

6,304

210

1.36

Dec.

99

90 

80

86

108

111

96

91

82

77

67

70

64

58

60

56

52

50

51

45

44

38

33

30

30

30

*33

33

32

33

30

1,859

60.0

1.35

Jan.

28

28 

19

23

38

38

31

29

133

257

319

305

274

234

206

183

173

147

146

150

127

115

108

98

99

90

87

*68

68 

95

98

3,814

123

1.24

Feb.

101

110 

128

111

116

115

159

184

182

170

165

237

262

214

196

182

160

143

144

148

138

117

111

100

103

121

127

135

*127

4,306

148

1.21

Mar.

126

124 

129

144

152

143

162

200

206

178

156

143

141

144

159

161

124

137

145

145

160

158

155

152

135

152

*147

143

144

154

161

4,680

151

1.30

Apr.

178

204 

245

248

264

282

264

274

324

309

27O

244

220

197

178

185

223

218

190

166

153

132

125

120

115

110

105

95

98 

*10 2

5,838

195

1.28

May

104

103 

101

99

93

89

91

88

83

73

76

71

68

73

69

68

59

65

49

50

56

53

52

51

48

44

45

59

58 

51

*53

2,142

69.1

1.38

June

65

64 

74

126

103

99

74

68

59

52

52

57

41

28

37

31

28

27

26

26

26

25

23

22

14

8.3

15

*17

23 

22

1,332.3

44.4

1.41

J'lly

20

13 

3.7

3.7

6.5

21

27

26

48

49

46

22

13

40

46

44

41

34

29

27

19

19

42

38

30

27

18

9.9

12 

*13

13

8OO. 8

25.8

1.38

Aug.

il

12 

11

9.6

7.9

9.6

10

10

11

11

11

13

13

13

10

9.

8.

6.

6.

5.

5.

5.

5. i

7.

8.

6.

6.

6.

6. 

*5.

5.

268.7

8.67

1.24

Sept.

4.9

4.5 

4.5

5.1

6.7

6.9

18

22

13

9.9

9.9

8.3

7.9

8.6

8.3

8.3

13

13

12

9.1

6.2

7.1

6.2

8.1

12

12

12

*14

15

13

299.5

9.98

1.34

Adjusted for diversion

Mean 

Cfsm 

In.

144 

3.40 

3.92

211 

4.98 

5.57

Calendar year 1955: 

Water year 1955-56:

61.3 

1.45 

1.67

124 

2.92 

3.38

150 

3.54 

3.81

152 

3.58 

4.14

196 

4.62 

5.15

70.5 

1.66 

1.92

Observed

Max 1,070 Min 6.0 Mean 101 

Max 586 Min 3.7 Mean 98.6

Peak discharge (base. 280 cfs). Oc

cfs (9.25 ft); Jan. 11 (7 p.m.) 346 <

45.8 

1.08 

1.21

27.2 

0.642 

0.74

9.91 

0.234 

0.27

11.3

0.267 

0.30

Adjusted

Mean 102 Cfsm 2.41 In. 32.69 

Mean 99.9 Cfsm 2.36 In. 32.08

t. 17 (4 to 6 p.m.) 457 cfs (8.57 ft); Nov. 6 (4:30 a.m.) 616 

-fs (8.01 ft); Feb. 13 (1 p.m.) 289 cfs (7.66 ft); Apr. 9

i.) 357 efs (8.07 ft)". 

* Discharge measurement made on this day.

t Diversion, equivalent in cubic feet per second, for municipal supply of Attleboro. Records furnished by city of Attleboro.
PROVIDENCE RIVER BASIN 123

Kettle Brook at Worcester, Mass.

Location. Lat 42"13'55", long 71 "50"07", on right bank 75 ft downstream from Webster

 Street Bridge at Worcester, Worcester County, 1 mile upstream from Beaver B-ook.

Drainage area. 31.3 sq mi.

Records available. August 1923 to September 1956. Prior to October 1950, published as 

Blackstone River at Worcester.

Gage. Water-stage recorder. Concrete control since Oct. 28, 1937. Datura of gage is 

T72.86 ft above mean sea level, datum of 1929.

Average discharge. 33 years, 53.8 cfs (adjusted for diversion).

Extremes. Maximum discharge during year, 852 cfs Oct. 16 (gage height, 5.65 f-.); minimum, 

3.4 cfs May 10.

1923-56: Maximum discharge, 3,970 cfs Aug. 19, 1955 (gage height, 12.78 ft, from 

floodmark), from rating curve extended above 1,700 cfs on basis of computation of peak 

flow over dam; minimum, 0.2 cfs May 17, 1940.

Remarks. Records excellent. City of Worcester diverts flow from about 7.0 sq mi of drainage area above station. Plow regulated by reservoirs above station.

Revisions (water years).--WSP 1301: 1927(M).

Rating tables, water year 1955-56 (gage height, In feet, and discharge, in cubic

feet per second)

(Shifting-control method used Oct. 22-30, Nov. 3, 4, 9, 10, 13-25, 

Dec. 5, Jan. 9)

Oct. 1 to Jan. 9

3.0 12

3.1 20

3.3 43

3.6 85

4.0 

4.5 

5.0 

6.0

170

330

530

1,040

Jan. j.0 to May 9

3.1 23

3.3 51

3.6 110

4.0 219

4.5 415

5.0 660

May 10 to Sept. 30

2.2 6.8 3.0 54

2.4 12 3.3 107

2.6 20 3.6 180

2.S 32 4.0 305

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

(t)

Oct.

33

30

*26

22

23

38

125

118

99

73

56

50

44

51

302

797

756

521

338

257

209

173

143

124

110

112

124

110

99 

92

228

5,283

170

8.48

Nov.

251

194

162

171

441

377

260

215

182

150

182

188

160

148

148

*138

136

122

114

110

102

92

87

80

78

72

66

62

57

51

4,596

153

10.5

Dec.

48

46

44

57

92

72

52

44

42

41

36

*33

31

29

29

29

24

24

24

24

20

19

19

19

22

22

22

20

19 

19

19

1,041

33.6

6.82

Jan.

18

16

17

18

24

28

22

28

259

507

279

226

200

160

122

122

110

97

88

82

76

70

56

*50

35

39

38

36

35

45 

58

2,761

89.1

9.13

Feb.

48

48

58

50

46

46

76

8O

80

76

72

103

95

68

74

76

60

56

60

72

64

46

46

45

45

87

95

88

70

1,930

66.6

9.80

Mar.

61

*60

86

132

129

99

132

155

144

112

106

103

97

90

92

86

84

84

86

88

88

86

86

92

99

124

75

84

82

88

86

3,016

97.3

9.44

Apr.

88

95

*112

129

198

286

330

260

213

207

233

257

272

294

310

396

575

424

314

233

*191

166

163

151

134

120

117

106

139

157

6,670

222

9.14

May

~84 132

79

32

40

42

36

75

42

12

36

48

48

44

42

40

40

36

36

34

32

30

28

28

26

26

34

42

36

34

43

1,344

43.4

9.52

June

63

64

104

214

*119

78

62

53

47

46

42

38

34

29

25

23

21

18

17

17

16

16

15

17

24

*19

16

15

14

IS

1,279

42.6

8.78

July

12

12

12

12

12

18

18

19

25

22

17

15

15

18

16

15

15

14

*14

13

14

16

14

14

13

12

11

10

9.8

9 5

Q ? 3^£.

446.5

14.4

4.36

Aug.

9.2

8.7

8.5

8.7

8.5

8.2

8.0

8.0

9.2

11

11

11

11

12

11

9.8

9.8

10

12

12

15

15

13

11

10

9.2

8.7

9.2

12

16

13

329.7

10.6

6.68

Sept.

15

15

14

*12

11

1~9.8

14

12

12

11

12

13

13

12

15

16

15

13

14

14

12

12

19

16

*14

12

19

Tc° 20 

ID

417.8

13.9

5.64

Adjusted for diversion

Mean 

Cfsm 

In.

179 

5.72 

6.59

164 

5.24 

5.84

Calendar year 1955 : 

Water year 1955-56 :

40.4 

1.29 

1.49

98.2 

3.14 

3.62

76.4 

2.44

2.63

107 

3.42 

3.93

231 

7.38 

8.25

52.9

1.69 

1.95

Observed

Max 2,720 Min 7.1 Mean 84.3 

Max 797 Min 8.0 Mean 79.5

51.4 

1.64 

1.83

18.8 

0.601 

0.69

17.3 

0.553 

0.64

19.6 

O.f 26 

0.70

Adjusted

Mean 92.0 Cfsm 2.94 In. 39.91 

Mean 87.7 Cfsm 2.80 In. 38.16

Peak discharge fbase. 250 cfaK Oet. 16 (6 to 8 a.m.) 852 cfs (5.65 ft); Oct. 31 (9 to 11 p.m.) 

295 cfs (4.36 ft); Nov. 5 (2 to 6:30 p.m.) 508 cfs (4.95 ft); Jan. 9 (11 to 12 p.m.) 393 cfs (4.45 

ft); Apr. 6 (11 a.m.) 520 cfs (4.72 ft); Apr. 17 (7:30 to 11 a.m.) 625 cfs (4.93 ft); Jme 4 (1:30 

a.m.) 264 cfs (3.88 ft).

* Discharge measurement made on this day.

t Diversion, equivalent In cubic feet per second, for municipal supply of Worcester. Records 

furnished by city of Worcester.

Note. Discharge In cubic feet per second per square mile and runoff In Inches may not represent 

natural flow because of regulation.
124 PROVIDENCE RIVER BASIN

Quinsigamond River at North Grafton, Mass.

Location.--Lat 42°lj'49", long 71°42'4l", on right bank 800 ft downstream from dam at outlet of Flint Pond at North Grafton, Worcester County, and 0.3 mile upstream from 

Bummett Brook.

Drainage area.--25.5 sq mi.

Records available.--October 1939 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 335 ft (from topographic map). Prior to 

Dec. 7, 1939, staff gage at same site and datum.

Average discharge.--17 years, 42.2 cfs.

Extremes.--Maximum discharge during year, 296 cfs Nov. 5 (gage height, 3.30 ft); minimum 

daily, 3.0 cfs Sept. 5.

1939-56: Maximum discharge, 820 cfs Aug. 20, 1955 (gage height, 5.15 ft); minimum 

daily, 0.3 cfs Oct. 14-17, 1942.

Remarks.--Records excellent except those for periods of no gage-height record, which are 

fair. Some regulation by Lake Quinsigamond and ponds above station.

Rating tables, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

1 to Sept. 30

1.3

1.5 

1.7

2.0 79

2.5 150

3.0 240

0.9 

1.0 

1.3 

1.6

3.0 

5.4

37

2.0 78

2.5 150

3.0 240

3.5 334

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13*

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Oct.

29

28

24

23

22.

*30

60

64

58

45

51

46

38

38

132

240

230

135

196

186

217

181

130

40

126

135

138

114

31

45 

92

2,924

94.3

3.70

4.26

Nov.

100

98

98

175

266

211

188

179

170

155

161

118

51

162

236

182

*157

130

186

211

191

168

150

138

124

114

105

99

90

57

4,470

149

5.84

6.52

Dec.

 u81

72

76

81

77

73

71

67

65

62

*59

52

47

45

40

41

39

36

31

33

31

30

30

30

30

28

26

25

25 

24

1,501

48.4

1.90

2.19

Jan.

23

22

22

22

22

22

22

23

66

84

110

211

226

208

188

168

157

143

112

126

115

110

100

*94

87

82

77

72

68

68 

71

2,921

94.2

3.69

4.26

Feb.

65

57

66

63

63

60

71

72

71

70

70

78

81

78

79

83

79

81

79

77

74

65

67

64

62

72

80

74

72

2,073

71.5

2.80

3.02

Mar.

64

*60

68

78

76

72

84

91

88

87

67

99

107

111

111

110

108

104

101

98

94

91

90

91

82

86

83

79

78

81 

79

2,738

88.3

3.46

3.99

Apr.

78

81

*96

110

128

143

150

170

164

161

164

168

181

184

179

197

208

211

211

195

179

157

136

142

136

136

136

128

128

81

4,538

151

5.92

6.62

May

*52~ 34

70

73

66

58

55

54

66

!§

71

66

65

56

52

49

46

44

43

46

54

53

51

49

43

40

42

43

39

38 

46

1,640

52.9

2.07

2.39

June

53

52

65

83

83

77

68

60

55

52

48

43

38

37

36

33

32

28

27

24

23

23

23

23

23

21

21

20

18

16

1,205

40.2

1.58

1.76

July

16

14

13

14

15

22

22

21

23

23

21

20

18

21

24

23

22

20

17

16

16

21

19

18

21

21

18

18

18

14

13

582

18.8

0.737

0.85

Aug.

11

10

9.2

8.4

9.7

7.6

7.6

8.0

7.6

7.2

7.2

8.4

6.6

6.6

5.7

5.1

4.8

4.6

5.4

5.7

7.2

6.6

6.0

5.4

5.0

4.5

4.1

3.8

3.8

4.2 

4.6

201.6

6.50

0.255

0.29

Sept.

4.7

4.3

4.0

3.8

5.0

3.2

4.6

4.6

5.7

4.2

3.4

4.4

5.4

5.4

5.7

10

*1O

10

9.2

10

11

9.7

10

14

13

12

*11

15

16

16

243.3

8.11

0.318

0.35

Calendar year 1955: Max 790 Mln 3.4 Mean 72.2 Cfsm 2.83 In. 38.44

Water year 1955-56: Max 266 Mln 3.0 Mean 68.4 Cfsm 2.68 In. 36.50

* Discharge Discharge measurement measurement made on this day.

Note. No gage-height record Feb. 23 to Mar. 1, Aug. 18 to Sept. 3; discharge estimated on basis 

of 1 discharge measurement, weather records, recorded range in stage when available, and records fo 

Kettle Brook at Worcester. Discharge in cubic feet per second per square mile and runoff in inches

ay not represent natural flow becaus egulation.
PROVIDENCE RIVER BASIN 125

Blackstone River at NortAbridge, Mass.

Location.--Lat 42 t> 09'13", long 71°39'09", on left bank 800 ft downstream from Paul Whit In 

Co. dam at Northbridge, Worcester County, and 3 miles downstream from Quinsigamond 

River.

Drainage area.--139 sq mi.

Records available. October 1939 to September 1956. October and November 1939 monthly 

discharge only, published in WSP 1301.

Gage. Water-stage recorder. Altitude of gage is 260 ft (from topographic map).

Average discharge.--17 years, 240 cfs (adjusted for diversion).

Extremes. Maximum discharge during year, 2,830 cfs Oct. 16 (gage height, 9.48 ft); minimum daily discharge, 9.0 cfs Sept. 1, 9.

1939-56: Maximum discharge, 16,900 cfs Aug. 20, 1955 (gage height, 16.74 ft), from 

rating curve extended above 3,800 cfs on basis of computation of flow over dam at gage 

height 13.7 ft and slope-area determination at gage height 16.74 ft; maximum gage 

height, 17.53 ft Aug. 20, 1955 (backwater from debris); minimum daily discharge, 2 cfs 

Aug. 29, 1941, Sept. 5, 194S.

Flood of Mar. 19, 1936, reached a stage of 13.7 ft, from floodmarks (discharge, 

7,510 cfs, by computation of flow over dam 800 ft above station).

Remarks.--Records good except those for periods of doubtful or no gage-height record, 

which are fair. Flow regulated by mills and reservoirs above station. Daily discharge includes flow diverted from Nashua River basin to Blackstone River basin for 

municipal supply of Worcester.

Revisions (water years).--WSF 1301: 1940(M).

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second)

(Shifting-control method used Oct. 1-15, 18-31, Dec. 5, 6, 

Jan. 9-25, 30, 31, Feb. 3, 7-9, 12-14)

3.3 148

3.5 188

4.0 300

5.0 573

Oct. 1-31

6.0 

8.0 

10.0

930

1,850

3,250

2.5

2.6 

2.9 

3.2

Nov. 1 to Sept. 30 

9.0

163

3.5 250

4.0 400

6.0 1,150

8.0 2,080

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

3

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

(t)

Oct.

218

178

196

150

168

*218

692

567

465

379

320

278

274

330

 1,170

*2,510

2.640

1,910

1,340

1,080

930

804

706

633

579

564

576

552

488 

413

913

22,241

717

9.17

Nov.

930

740

582

730

1..990

1,630

1,220

1,050

914

810

1,020

950

774

743

822

834

*758

676

642

687

684

628

547

502

*460

382

343

325

301

_298

22,972

766

0

Dec.

271

268

268

304

597

334

292

280

253

229

223

229

*220

220

208

190

180

180

185

180

170

165

160

155

155

155

160

165

155

140 

155

6,626

214

18.9

Jan.

130

130

135

150

145

140

140

135

1,000

1.500

1,200

950

880

800

710

620

550

480

420

370

*522

307

301

280

271

253

253

244

235

528

13,668

441

10.9

Feb.

274

266

337

277

271

271

420

400

370

343

322

508

505

424

400

456

379

346

345

557

340

301

286

286

573

550

480

460

382

10,707

569

7.76

Mar.

346

*355

474

675

670

536

755

838

732

614

572

586

582

568

578

564

550

520

510

510

526

558

554

564

535

512

554

428

502

449

410

17,105

552

20.7

Apr.

438

519

*614

704

1,000

1,270

1,220

1,020

886

926

1,040

1,080

1,080

1,080

1,070

1,550

1.800

1,480

1,190

1,020

*854

762

745

756

652

606

605

568

648

745

27,702

925

5.55

May

645

491

*474

407

564

567

355

337

346

558

545

528

528

528

295

277

211

271

247

255

256

247

244

252

229

168

148

256

220

197

277

9,481

506

16.8

June

540

504

480

830

533

391

554

292

250

238

250

211

226

185

180

166

152

144

165

138

102

159

144

118

129

98

87

100

102

100

6,928

251

17.1

July

78

98

90

85

77

258

136

126

196

145

147

135

118

169

128

126

155

120

*105

91

108

158

159

105

158

125

106

92

90

68

110

5,796

122

41.4

Aug.

85

71

75

48

52

95

94

108

dlOO

119

d50

d80

150

152

115

97

88

17

d45

dlOO

141

108

d80

89

d!7

d50

d90

78

89

62

72

2,575

83.1

37.7

Sept.

9£.

d20

d50 *aeo

d20

72

168

dl!5

d9.0

92

78

89

81

88

79

59

d!30

d90

d85

d87

d90

d30

d80

d!75

d!40

d80

*d75

d!50

d!70

dl!5

2,606.0

86.9

27.5

Adjusted for diversion

Mean 

Cfsm 

In.

708 

5.09 

5.87

766 

5.51 

6.15

Calendar year 1955; 

Water year 1955-56:

195 

1.40 

1.62

450 

5.09 

5.57

561 

2.60 

2.80

531 

3.82 

4.40

918 

6.60 

7.37

289

2.08 

2.40

Observed

Max 8,850 Min 74 Mean 435 

Max 2,640 Min 9.0 Mean 400

214 

1.54 

1.72

81.0 

0.583 

0.6-7

45.4 

0.327 

0.58

59.5

0.427 

0.48

Adjusted

Mean 415 Cfsm 2.9? In. 40.52 

Mean 582 Cfsm 2.7? In. 37.43

Discharge measurement made on this day.

t Diversion, equivalent in cubic feet per second, from Nashua River basin to Blackstcne River 

basin for municipal supply of Worcester. Records furnished by city of Worcester.

d Doubtful gage-height record; discharge computed from reconstructed gage-height graph based on 

recorded graph.

Note. No gage-height record Dec. 16 to Jan. 20, Mar. 18-20; discharge estimated on basis of 

weather records, recorded range In stage, and records for station at Woonsocket, R. I. Discharge in 

cubic feet per second per square mile and runoff in inches may not represent natural flow because of 

regulation.
126 PROVIDENCE RIVER BASIN

Branch River at Forestdale, R. I.

Location. Lat 41°59'47", long 71°33<47", on left bank 20 ft upstream from abandoned 

bridge, 400 rt (-evlsed) downstream from mllldam at Porestdale, Providence County, 

1 mile east of Slatersville, and 1.6 miles upstream from mouth.

Drainage area. 93.3 sq ml.

Records available.--September to December 1909 and January 1912 to July 1913 (gage

heights only) , January 1940 to September 1956. Published as "at Branch Village" 1909, 

1912-13.

Gage.--Water-stage recorder. Altitude of gage Is 180 ft (from topographic map). Prior 

to July 28, 1913, staff gage at site 1 mile downstream at different datum.

Average discharge.--16 years, 164 cfs.

Extremes.--Maximum discharge during year, 2,550 cfs Oct. 16 (gage height, 8.33 ft); minimum dally, 7.8 cfs June 23.

1940-56: Maximum discharge, 4,240 cfs Aug. 19, 1955 (gage height, 10.52 ft), from 

rating curve extended above 2,100 cfs on basis of computation of peak flow over dam 

400 ft above station; minimum dally, 5.2 cfs Oct. 7, 1948.

Discharge of flood in March 1936 was about 5,800 cfs, by computation of flow over 

dam 1 mile above station.

Remarks.--Records excellent. Flow regulated by mills and reservoirs above station.

Rating table, water year 1955-56 (gage height, In feet, and 

discharge, in cubic feet per second)

1.5

1.6

i.a

2.0 

2.3 

2.6

4.2 

8.3

21

39

75

120

3.0 

3.5 

4.0 

5.0 

7.0 

9.0

198

329

490

870

1,800

3,000

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13L4 -

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Oct.

128

174

225

213 

166

147

169

110

219

245

208

92

230

211

598

2.570 

*2,OOO

1,220

886

714

598

476

413

426

397

382

340

318

243

285 

643

14,846

479

5.13

5.92

Nov.

690

532

443

451 

1,370

1,110

816

630

539

466

542

642

511

528

494

430 

430

372

283

320

351

*293

272

231

314

202

221

257

214

205

14,159

472

5.06

5.64

Dec.

206

203

94

133 

298

249

217

205

200

108

162

218

*193

155

103

106 

92

135

204

163

107

104

107

30

32

120

189

159

100

104

30

4,576

148

1.59

1.82

Jan.

29

48

172

168 

99

101

30

30

415

914

694

539

504

*428

369

359 

293

248

235

224

160

198

251

222

218

212

212

132

189

264

308

8,265

267

2.86

3.29

Feb.

274

248

320

221 

235

274

305

372

341

314

262

623

592

417

366

360 

323

305

243

326

271

245

227

216

221

317

344

299

258

9,119

314

3.37

3.63

Mar.

228

233

*283

302

391

332

426

560

528

389

372

420

372

335

366

363 

259

296

354

291

274

277

305

302

293

344

291

279

288

308

267

10,328

333

3.57

4.12

Apr.

317

401

459

500

*6L7

826

826

802

725

698

786

754

686

592

581

706 

1.040

866

650

532

426

430

421

397

360

335

338

242

317

388

16,958

565

6.06

6.76

May

311

271

*271

268

187

198

260

214

213

203

185

82

123

229

207

205 

200

200

83

.26

142

169

88

105

135

75

36

217

204

87

172

5,366

173

1.85

2.14

June

205

85

199

420 

322

242

210

199

101

48

190

185

138

102

102

27 

25

91

99 noi

96

29

7.8

1?

21

20

22

22

18

20

3,363.8

112

1.20

1.34

JulV

37

43

29

35

47

99

102

79

75

77

61

56

52

72

102

169 

135

87

22

18

18

24

*120

133

18

16

Ts

19

20

21 

21

1,825

58.9

0.631

0.73

Aug.

30

39

38

27 

27

29

28

27

31

25

33

35

36

34

34

34 

36

33

33

34

37

36

34

34

34

34

31

28

*30

30 

30

1,001

32.3

0.346

0.40

Sept.

31

32

34

32 

29

30

44

35

33

32

34

64

147

176

76

35 

35

38

4O

41

144

77

28

27

13

89

134

~~B§ 194

25

1,838

61.3

0.657

0.73

Calendar year 1955: Max 2,950 Min 10 Mean 243 Cfsm 2.60 In. 35.37

Water year 1955-56: Max 2,370 Min 7.8 Mean 250 Cfsm 2.68 In. 36.52

Peak diseharse (base, 880 cfs). Oct. 16 (9:30 a.m.) 2.550 cfs (8.33 ft); Nov. 5 (4 to 4:30 D.m.)

1,660 efs (6.71 ft): Jan. 10 (7 a.m.) 1.080 cfs (5.52 ft); Apr. 9 (7 a.m.) 946 cfs (5.19 ft);

Apr. 17 (10:30 a.m.) 1,180 cfs (5.74 ft).

* Discharge measurement made on this day. 

Mote. Discharge in cubic feet per second per square mile and runoff in inches may not represent 

natural flow because of regulation.
PROVIDENCE RIVER BASIN 127

Blackstone River at Woonsocket, R. I.

Location. Lat 42°00'22", long 71°30'13", on right bank at Woonsocket, Providence County, 

50 ft downstream from Peters River.

Drainage area. 416 sq mi.

Records available. February 1929 to September 1956.

Gage. --Water-stage recorder. Datum of gage is 107.42 ft above mean sea level, datum of

^1929.

Average discharge.--27 years, 721 cfs (adjusted for diversion).

Extremes. --Maximum discharge during year, 8,710 cfs Oct. 17 (gage height, 10.12 ft); minimum daily, 111 cfs Sept. 3.

1929-56: Maximum discharge, 32,900 cfs Aug. 19, 1955 (gage height, 21.8 ft, from 

floodmarks), from rating curve extended above 15,000 cfs on basis of slope-a-ea determination of peak flow, affected by failure of Horseshoe Dam on Mill River; minimum 

daily, 21 cfs Aug. 11, 1934, flow diverted around station in Hamlet Trench not included.

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

Plow regulated by powerplants and reservoirs above station. Extremes and figures of 

daily discharge include flow diverted from Nashua River basin to Blackstone River basin 

for supply of city of Worcester, Mass., and flow diverted around station in Hamlet 

Trench.

Revisions (water years).--WSP 756: Drainage area. WSP 781: 1931(M). WSP 1051: 1931.

Rating tables, water year 1955-56 (gage height, In feet, and

discharge, In cubic feet per second) 

(Shifting-control method used Oct. 1-15, 23-31)

Nov. 1 to Sept. 30

2.5

3.0 

4.0 

5.0 

10.0

418

660

1,350

2,300

8,540

109

178

3.0 

4.0 

6.0

735

1,480

3,530

5,890

Discharge, In cubic feet per second, water year October 1955 to September 195f

Day

L 

2

3

4

5

6

7

a

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

705 

729

699

681

655

561

1,220"

1,370

1,350

1,140

986

743

705

812

2,000

*6,930

*8,310 

6,530

4,190

3,120

2,440

a2,050

al,800

al,650

al,550

al,500

1,540

1,400

1,360

1,330

2,150

62,206

2,007

9.16

Nov.

2,910 

2,460

2,010

2,020

5,140

5.640

4,120

3,340

2,770

2,540

2,370

2,050

2,390

2,450

2,270

2,160

2,180 

a 1,900

a 1,600

al,750

al,700

*al,650

1,430

1,430

1,330

1,190

1,190

1,030

1,090 

890

67,000

2,233

0

Dec.

856 

830

749

849

1,270

1,170

1,030

932

815

665

627

778

772

724

654

632

551 

627

637

654

491

476

48 6

377

443

521

521

*571

491 

448

349

20,996

677

18.9

Jan.

293 

365

482

536

448

413

326

316

*2,010

4,320

3,590

2,890

2,720

 2,470

2,110

1,940

1,720 

1,470

1,280

1,190

1,010

1,050

1,070

1,000

987

889

868

790

700 

987

1,340

41,580

1,341

10.9

Feb.

1,130 

1,080

1,300

1,060

1,040

1,020

1,330

1,650

1,460

1,360

1,310

2,090

2,380

1,990

1,620

1,610

1,500 

1,280

1,180

1,330

1,180

1,050

966

861 '§80"

1,560

1,610

1,450

1,310

39,687

1,369

7.76

Mar.

1,110 

1,110

*1,270

1 540

1,910

1,680

1,880

2,500

2,480

2,080

1,730

1,740

1,630

1,640

1,710

1,630

1,410 

1,460

1,450

1,390

1,440

- 170

1,510

1,480

1,460

1,490

1,410

1,350

1,410

1,410

1,320

49,100

1,584

20.7

Apr.

1,390 

1,590

1,970

2,270

*2,740

3,660

3,840

3,590

3,160

3,100

3,360

3,370

3,220

3,060

2,970

3,290

4,600 

17520

3,280

2,710

2,300

2,110

1,940

1,970

1,730

1,570

1,560

1,430

1,580

1,790

_______

79,370

2,646

5.53

May

1,810

1,480

* ,360

,250

*,120

,110

,080

,010

940

926

905

720

774

843

350

786

750 

732

610

533

607

678

564

590

590

533

441

T5S

685

579

26,072

841

16.8

June

961 

739

1,050

1,800

1,620

1,200

894

798

625

508

617

606

568

445

432

339

295

336

355

332

325

294

259

229

222

251

250

240

225 

233

17,048

568

17.1

July

203 

198

*189

181

221

403

406

411

356

415

297

278

240

343

426

398

398 

299

225

222

225

250

*343

377

231

234

210

196

168 

162

153

8,658

279

41.4

Aug.

185 

175

ISO

168

132

139

172

168

172

170

ISO

153

146

214

222

209

211 

195

119

126

196

207

193

175

178

122

122

164

*154 

153

141

5,241

169

37.7

Sept.

150 

115

ISO" 111

158

131

266

27C

198

128

196

228

274

327

256

188

175 

234

202

202-

261

272

146

219

267

294

280

492

4T8 

248

6,836

228

27.5

Adjusted for diversion

Mean 

Cfsm

In.

1,997 

4.80 

5.54

2,232 5.3- 

5.99

Calendar year 1955: 

Water year 1955-56:

Peak: dlsch

658 

1.58 

1.82

1,330 

3.20 

3.69

1,361

3.27 

3.53

1,563 

3.76 

4.33

2,640 

6.35 

7.08

824 

1.98

2.28

Observed

Max 25,900 Mln 125 Mean 1,181 

Max 8,310 Mln 111 Mean 1,158

arge (base, 3,400 cfs).-

6,450 cfs (8.43 Ft); Jan. 10 (9 a.m. 

* Discharge measurement made on th

-Oct. 17 (9:30 a 

) 4,550 cfs (6.8£ 

.s day.

551 238 

1.32 0.572 

1.48] 0.66

131 

0.315 

0.36

200 

0.481 

0.54

Adjusted

Mean 

Mean

1,161 Cfsm 2 

1,140 Cfsn 2

.79 In. 37.88 

.74 In. 37.30

m. ) 8,710 cfs (10.12 ft); Nov. 5 (9 to 10 p.m.) 

ft); Apr. 17 (1:30 p.m.) 4,920 cfs (7.20 ft).

T Diversion, equivalent in CUBIC teet per second, from Nashua Kiver basin tor municipal supply 01 

Worcester, Mass. Records furnished by city of Worcester.

a No gage-height record; discharge estimated on basis of 1 discharge measurement, weather records, 

recorded range In stage, and records for station at Northbrldge, Mass.
PROVIDENCE RIVER BASIN

Woonasquatucket River at Centerdale, R. I.

Location. Lat 41°51'32", long 71°29'16", on right bank 75 ft downstream from bridge on

 U. S. Highway 44, at Centerdale, Providence County, and 65 miles upstream from mouth.

Drainage area.--38.3 sq mi.

Records available."-July 1941 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 95 ft (from topographic map).

Average discharge.--15 years, 69.8 cfs.

Extremes.--Maximum discharge during year, 959 cfs Oct. 17 (gage height, 6.59 ft); minimum

al 1941-56? Maximum discharge, 1,100 cfs Sept. 11, 1954 (gage height, 7.03 ft), from 

rating curve extended above 450 cfs; minimum daily, 3.4 cfs Oct. 13, 19, 1941.

Flood in March 1936 reached a discharge of 1,000 cfs, by computation of flow over dan 

three-quarters of a mile below station.

Remarks.--Records good except those for periods of no gage-height record, which are fair.

 Plow regulated by mills and reservoirs above station. Discharge includes leakage

tnrough bypass canal.

Rating tables, wat discharge

0;t. 3, 4, 7-11, Oct. 13 to Apr.

Oct. 1-31

1.4 

1.6 

2.0 

2.5

Nov. 1 to Sept. 30

18 3.0

28 4.0

176

336 

£30

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4 

5

6

7

8

9

10

11

12

13 I

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cf sm

In.

Oct.

57

55

73

63 

1*

57

90

97

91

*95

80

62

73

66

223

746

*870

589

419

320

269

233

205

187

167

153

138

128

118

119

288

6,135

200

5.22

6.01

Nov.

236

222

189

198 

511

452

359

290

*252

220

255

252

224

235

227

215

205

179

158

154

143

133

125

120

128

109

111

119

110

102

6,239

208

5.43

6.06

Dec .

100

90

73

97 

117

104

100

94

87

70

74

87

77

72

76

74

60

64

78

75

72

70

68

61

55

60

71

*69

es

f 2 

60

2,381

76.8

2.01

2.31

Jan.

48

45

51

52 

46

49

45

47

141

125

98

118

"is 165

152

137

132

121

105

102

*88

97

90

78

74

73

81

62

71

97

97

2,836

91.5

2.39

2.75

Feb.

84

88

109

100 

105

108

149

153

147

142

140

261 2~50"

221

194

171

150

147

147

140

127

112

*107

96

101

135

129

135

123

4,071

140

3.66

3.95

Mar.

Ill

112

118

127 

128

126

164

200

201

F75

160

147

139

149

163

160

151

143

149

143

136

129

131

143

139

131

124

122

123

*153

154

4,451

144

3.76

4.32

Apr.

158

182

218

237

272

291

285

317

321

299

282

259

239

214

200

229

263

242

214

185

164

148

141

136

124

119

107

104

TT9

125

6,194

206

5.38

6.01

May

113

T07

105

101 

92

93

101

88

78

*70

72

60

64

73

64

63

61

60

48

44

55

56

51

52

50

43

45

56

55

45

53

2,118

68.3

1.78

2.06

June

57

57

82

129

107

92

78

68

54

55

58

55

-51

46

44

40

38

40

42

39

37

35

31

30

31

31

29

33

32

30

1,551

51.7

1.35

1.51

July

29

30

30

28 

i§

40

38

37

*42

38

37

36

38

42

33

30

33

32

34

41

36

33

35

34

*32

33

34

30

05 

30

1,060

34.2

0.993

1.03

Aug.

30

3T5

30

27 

23

23

27

28

29

28

26

26

24

24

24

27

28

26

21

22

29

*29

30

30

26

22

23

26

26 

26

816

26.3

0.687

0.79

Sept.

24

21

22

26 

26

26

373~2

24

25

24

23

22

21

*21

23

22

22

23

25

25

24

21

22

21

22

23

28

24

20

719

24.0

0.627

0.70

Calendar year 1955: Max 870 Min 8.9 Mean 102 Cfsm 2.66 In. 36.10

Waber year 1955-56: Max 870 Min 20 Mean 106 Cfsm 2.77 In. 37.50
PAWTUXET RIVER BASIN

South Branch Pawtuxet River at Washington, R. I.

Locatj.on. --tat 41 0 41'24", long 71°33'59", on right bank 150 ft downstream from highway 

bridge at Washington, Kent County, and 0.9 mile upstream from outlet of Tiogu? Lake.

Drainage area.--63.8 sq mi.

Records available.--October 1940 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 230 ft (from topographic map).

Average discharge.--1G years, 128 cfs (adjusted for storage and diversion).

Extremes.--Maximum discharge during year, 942 cfs Oct. 17 (gage height, 3.07 ft); minimum 

daily, 11 cfs July 2-4.

1940-56: Maximum discharge, 1,320 cfs Sept. 12, 1954 (gage height, 4.11 ft); minimum daily, 2.8 cfs Aug. 27, 1944.

Flood in March 1936 reached a discharge of 1,810 cfs, by computation of flow over 

dam just above gage.

Remarks.--Records good. Flow regulated by Flat River Reservoir (usable capacity,

250,000,000 cu ft) and smaller reservoirs. Diversion above station from Carr Pond for 

municipal supply of Coventry, Warwick, and West Warwick.

Rating tables, water year 

discharge, ii

gage height, In feet. 

't per second J

1.4

1.5 

1.7 

1.9

Oct. 1-17

20 2.1

33 2.5

3.0

2.0 175

2.5 540

131 1.6 49 3.0 890

Discharge, in cubic feet per second, water year October 1955 to September 1956

F. :

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

119

34

99

114

110

99

78

38

27

76

*42

22

36

51

60

141

776

799

596

462

384

312

278

286

294

269

235

211

140

157 

336

6,632

216

+106

Nov.

443

384

303

286

554

715

561

484

421

*368

376

360

360

360

392

392

400

360

303

193

259

286

286

157

*294

158

162

303

344

3 52

10,618

354

-19.3

Dec.

344

336

156

120

137

200

206

226

265

229

217

236

213

245

227

212

27

22

*126

112

112

95

llfi

20

19

22

132

117

121 

113

18

4,746

153

-17.4

Jan.

17

27

197

211

130

149

21

22

249

239

352

376

*344

193

195

383

375

408

359

280

fiO

73

232

"22

243

229

199

24

27 

221

219

6,285

203

-4.85

Feb.

235

244

244

35

40

24^

316

348

341

285

56

84

238

307

324

364

428

176

149

339

484

442

435

*294

144

140

242

284

275

7,590

262

-3.83

Mar.

269

235

37

40

224

221

286

360

384

260

244

368

368

376

351

303

147

176

344

352

392

435

400

260

238

186

198

*182

166 

191

8,075

260

+ 14.0

Apr.

106

247

336

352

414

333

71

312

449

442

449

449

407

368

344

37G

463

456

400

360

33R

320

302

294

294

294

294

286

286

286

10,127

338

+3.36

May

249

312

309

204

32

58

172

178

+ 166

174

174

36

62

189

189

169

197

1SR

28

29

195

192

177

179

151

22

38

183

178

41 

169

4,627

149

+17. 1

June

153

24

84

291

270

225

213

198

63

30

208

202

200

194

166

20

18

130

133

152

152

137

18

16

9T

129

143

143

129 

17

4.004

133

-34.9

July

13

11

11

11

18

+ 26

20

18

2P

24

2O

18

18

84

161

108

106

110

110

1UO

23

23

109

126

102

*111

US

32

16 

107

109

1,897

61.2

+18.3

Aug.

109

98

87

17

17

63

75

73

C8

82

15

15

54

71

57

88

49

14

14

+ 47

92

u2

89

48

14

15

96

80

70 

59

74

1,835

59.2

-27.1

Sept .

18

14

16

76

86

84

73

15

15

86

74

91

113

64

14

16

77

84

77

63

49

13

14

53

ee

53

62

67

14 

15

1,562

52.1

-0.19

Adjusted for diversion and change in reservoir contents

Mean

Cf sm

321 

5.03

5.81

33 

5.2J 

5.8J

Calendar year 1955: 

Water year 1955-56:

13S 

2.13 

2.45

198 

3.10 

3.58

25S 

4.04

4.36

274 

4.29 

4.96

341 

5.34 

5.96

166 

2.60 

3.01

Observed

Max 799 Mln 18 Mean 177 

Max 799 Mln 11 Mean 186

98.6 

1.55 

1.72

79.5, 32.1 

1.251 0.503 

1.44 0.58

51.9 

0.813 

0.91

Adjusted

Mean 175 CJ'sm 2.74 In. 37.26 

Mean 190 Cfsm 2.98 In. 40.63
130 PAWTUXET RIVER BASIN

Pawtuxet River at Cranston, R. I.

Location.--Lat 41°45'03", long 71°26'44", on left bank at Cranston, Providence County

0.7 mile upstream from Pocasset River. 

Drainage area. 200 sq mi.

Records available. December 1939 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 10 ft (from topographic map) 

Average discharge. 16 years (1940-56), 398 cfs (adjusted for storage ard diversion). 

Extremes.--Maximum discharge during year, 2,090 cfs Nov. 6 (gage height, 9.10 ft); minimum

daily, bS cfs Jan. 2, Aug. 26.

44 939 ~56: Maximum discharge, that of Nov. 6, 1955; minimum daily, 22 cfs Sept. 4,

Remarks. Records excellent except those for periods of backwater from pquatic vegetation, 

which are good, and those for period of no gage-height record, which are fair. Flow 

regulated by powerplants, and by Scltuate, Plat River, and other reservoirs (combined 

usable capacity, about 5 1/3 billion cu ft). Diversion above statior from Scituate 

Reservoir for municipal supply of Providence, North Providence, Cransrton, Johnston, 

Smithfield, and Warwick.

Revisions (water years]. WSP 971: 1940-42. WSP 1381: 1940-41(M).

Rating tables, water year 1955-56, except periods of backwater from aqiatie 

vegetation (gage height, in feet, and discharge, in cubic feet per second)

3,5 50

3.7 95

4,0 193

4.5 384

Jan. 15

5.0 615

6.0 1,050

7.0 1,410

3.7 2,070

Jan. 16 to Sept. 30

3.5 50

3.7 95

4.0 198

4.5 430

5.0 702

6.2 1,220

Day

1

2

3

4

5

6

7 

8 

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

( + )

Oct.

298

179

253

330

331

352

505

272 

138

I99

*350

169

227

294

405

1,250

1,630

1,650

1,400

1,200

1,070

890

B58

902

863

814

768

717

563

592

1,100

20,674

667

+451

Nov.

1,160

1,070

942

906

1,650

2,050

1,310 

1,460 

1,?20

*1,060

1,070

1,100

1,060

1,120

1,140

1,100

1,100

1,010

853

777

786

800

814

508 555

676

587

759

804

791

30,718

1,024

+ 10.2

Dec.

759

T45

634

498

638

577

606 

601 

606

577

577

667

577

577

601

582

416

116

*268

442

469

451

446

376

115

80 2'68

456

465

469

372

15,032

485

-144

Jan.

98

69

355

?05

563

5SO

208

88 

624

868

800

818

827

441

380

*678

726

749

695

603

286

150

446

470

464

476

458

224

98

374

570

14,736

475

+117

Feb.

50-5

721

877

496

168

468

1,000 

992 

909

872

531

487

706

875

853

885

915

770

697

856

943

961

929

845

636

665

762

790

766

21,880

754

+ 70.6

Mar.

749

760

636

534

*697

741

886 

1,090 

1,030

832

780

SBB

922

924

99(3

878

694

660

838

891

892

963

982

814

785

817

702

734

719

788

25,295

816

+ 62.8

Apr.

469

564

1,020

983

1,020

*998

678 

833 

1,150

1,100

1,030

1,020

968

844

868

1,030

1,130

1,190

1,080

1,000

922

855

880

789

785

712

764

749

573

657

26,761

892

+227

May

660

622

720 e'So"

342

153

439 

517 

*504

506

518

303

122

419

511

496

492

516

266

110

357

496

494

477

472

262

116

377

491

258

340

12,996

419

+12.0

June

396

166

120

550

53(5

489

426 

417 

199

116

432

437

431

382

331

157

70

138

*236

258

253

250

145

72

99

216

230

250

237

145

8,190

273

-5.27

July

101

82

98

90

94

171

125 

82 

175

171

141

120

103

156

183

248

214

206

204

194

160

146

185

220

301

257

269

159

90

168

*254

5,172

167

+12.9

Aug.

259

'STE5

236

136

78

112

220 

210 

189

213

127

72

126

123

169

193

216

120

70

*91

141

156

140

138

98

68

93

166

160

134

129

4,631

149

-74.1

Sept.

98

78

70

120

166

187

173 

113 

78

159

178

151

195

206

*150

132

212

195

154

a200

a!90

a!20

a90

a!20

8170

alSO

a!70

alSO

a!20

a90

4,445

148

-40.1

Adjusted for diversion and change in reservoir contents

Mean 

Cfsm 

In.

1.118 

5.59 

6.44

1,034 

5. 17 

5.77

Calendar year 1955: 

Water year 1955-56:

341

1.70 

1.97

592

2.96 

3.41

325 

4.12 

4.45

879 

4.40 

5.07

1,119 

5.60 

6.24

431 

2.16 

2.49

Observed

Max 2,050 Min 64 Mean 501 

Max 2,050 Mln F,8 Mean 521

268 

1.34 

1.49

180 

C.900 

1.04

75.3 

0.376 

0.43

108 

0.540 

0.60

Adjusted

Mean 550 Cfsm E.75 In. 37.35 

Mean 579 Cfsm 2.90 In. 39.40

* Discharge measurement made on this day.

t Diversion above station from Scltuate Reservoir for municipal supply of Providence, North

 ovidence, Cranston, Johnston, Smithfield, and Warwick, and change in contents in Scltuate and Plat 

---ver Reservoirs, equivalent in cubic feet per second. Records furnished by Providence Water Supply 

Board and Quidnick Reservoir Co.

a No gage-height record; discharge estimated on basis of weather records and records for South 

Branch Pawtuxet River at Washington.

Note.--Backwater from aquatic vegetation Oct. 1 to Jan. 15. June 21 to Sept. 30.
POTOWOMJT RIVER BASIN 13] 

Potowomut River near East Greenwich, R. I.

Location. Lat 41°38'28", long 71°26'45", on right bank 45 ft upstream from Old Forge Dam 

in North Kingstown, Washington County, i-j miles south of village of East Greenwich, 

Kent County, and 2? miles upstream from mouth.

Drainage area.--23.0 sq mi.

Records available.--August 1940 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 10 ft (from topographic map).

Average discharge.--16 years, 42.9 cfs (unadjusted).

Extremes. Maximum discharge during year, 347 cfs Oct. 17 (gage height, 2.345 ft); minimum, 5.2 cfs Sept. 14.

1940-56: Maximum discharge, 450 cfs Sept. 12, 1954 (gage height, 2.63 ft); maximum 

gage height, 6.78 ft Aug. 31, 1954 (backwater from hurricane tidal wave); no flow 

Oct. 24-26, 1947 (due to closing of gate at Old Forge Dam).

Maximum stage known, about 8.5 ft Sept. 21, 1938, from information by local resident 

(backwater from hurricane tidal wave).

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Diversions above station for supply of East Greenwich, North Kingstown, Warwick, and 

U. S. Naval establishments.

Rating tables, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

Nov. 1 to Apr. 8

1.1

1.2

1.3

3.4

13

39

1.5 

1.9 

2.3

190

333

1.2

1.3 

1.5

1.8 

2.2

152

298

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(U

Oct.

38

38

32

27

21

48" 18

60

46

35

*27

24

22

20

52

205

311

?OT

*132

10^

85

75

68

62

62

58

55

54

50

51

89

2,173

70.1

4.95

NOV.

105

79

67

71

- 272

262

166

122

105

*94

136

145

113

119

126

113

113

99

91

89

84

81

77

81

81

74

69

72

72

!§

3,244

103

4.76

Dec.

62

60

62

66

80

72

65

60

56

54

52

50

48

46

45

44

42

40

*39

34

' 28

28

28

30

34

34

30

28

28

29

28

1,402

45.2

5.04

Jan.

28

25

41

54

42

36

33

32

80

160

130

105

90

80

72

»67

65

59

55

53

51

48

46

43

41

39

39

38

37

51

81

1,821

58.7

5.14

Feb.

63

63

119

84

72

69

143

126

97

86

86

159

132

97

86

81

74

84

108

102

86

72

66

 61

T7

89

77

91

84

2,534

90.8

5.03

Mar.

72

77

91

91

84

81

111

159

152

113

97

91

39

102

126

103

36

89

86

86

86

91

99

111

102

91

91

*97

97

129

132

3,117

101

4.73

Apr.

126

129

152

139

129

116

108

159

176

143

121

110

101

95

95

137

153

124

101

95

90

88

85

80

75

75

75

72

75

82

3,306

110

4.86

May

75

69

75

75

70

66

75

70

*61

60

59

56

55

52

50

51

49

47

46

45

43

40

38

37

37

37

50

75

60

49

43

1,715

55.3

5.20

June

39

38

51

88

72

54

43

37

33

34

33

;o

28

26

*22

20

19

18

17

17

16

18

17

17

17

16

15

15

14

TV!

880

29.3

6.34

July

14

13

12

11

Tf

42

41

31

41

41

35

24

22

37

38

30

24

20

17

15

19

44

39

31

24

*20

15

14

14

12

11

767

24.7

5.77

Aug.

11

10

9.6

9.0

9.0

8.5

8.0

8.5

8.5

8.0

7.0

9.0

17

15

11

9.0

7.5

7.0

7.0

*6.8

8.0

7.5

7.5

7.5

7.0

7.0

6.6

6.6

6.6

6.6

6.6

263.9

8.51

6.45

Sept.

6.6

6.6

6.6

6.1

5.6

6.1

6.6

6.6

6.1

6.1

5.6

5.6

5.6

5.6,

6.1

6.6

6.6

6.1

5.6

6.6

6.1

6.1

5.6

7.0

6.6

6.1

5.6

6.1

6.1

6.1

184.4

6.15

5.67

Calendar year 1955: Max 311 Min 3.8 Mean 56.4

Water year 1955-56: Max 311 Min 5.6 Mean 58.8

Peak discharge (base, 190 cfs).--Oct. 17 (2 to 5 a.m.) 347 cfs (2.345 ft); Nov. 5 (5 to 

336 cfs (2-31 ft); Apr. 8 (9 to 12 p.m.) 195 cfs (1.915 ft).

* Discharge measurement made on this day.

t Diversions, equivalent in cubic feet per second, for supply of East Greenwich, North Kingstown, 

Warwick, and U. S. Naval establishments; for calendar year 1955, 5.01 cfs; for water year 1956, 

5.32 cfs. Records furnished by U. S. Navy and Kent County Water Authority.

Note.-nNp ga.-;e-height record Dec. 5-18, Jan. 7-15; discharge estimated on basis of weather records, 

recorded range in stage, and records for Wood River at Hope Valley and Ada-nsville Brook at Adamsville.
132 PAWCATUCK'RIVER BASIN

Pawcatuok River at Wood River Junction, R. I.

Location. Lat 41 0 26'42", long 71°40 I 53", on right bank at downstream side of bridge on 

Alton-Carolina road, 0.8 mile northeast of Wood River Junction, l| miles southwest of 

Carolina, Washington County, and 2.9 miles upstream from Wood River.

Drainage area. 100 sq mi.

Records available.--October 1940 to September 1956. October and November 1940, monthly 

discharge only, published in WSP 1301. Prior to October 1943, published as Charles 

River at Wood River Junction.

Gage. Water-stage recorder and concrete control. Altitude of gage is 40 ft (from topographic map).

Average discharge. 16 years, 185 cfs.

Extremes. Maximum discharge during year, 779 cfs Oct. 18 (gage height, 5.48 ft); minimum, 

23 cfs Sept. 14; minimum daily, 41 cfs Sept. 15.

1940-56: Maximum discharge, 1,040 cfs Mar. 17, 1953 (gage height, 5.83 ft); maximum gage height, 6.23 ft Sept. 13, 14, 1954; minimum discharge, 7.4 cfs Oct. 10, 1947; 

minimum daily, 15 cfs Oct. 11, 1947.

Remarks. Records excellent except those for periods of no gage-height record, which are 

fair. Flow regulated by powerplant and mills above station.

Revisions (water years). WSP 1051: Drainage area. WSP 1201: 1948.

Rating tables, water year 1955-56 (gage height, In feet, and 

discharge, In cubic feet per second)

Oct. 1 to Nov. 6 Nov. 7 to Sept. 30

2.5 138

3.0 248

4.0 449

5.0 

5.5

664

784

1.9 

2.1 

2.5 139

3.0 265

4.0 461

5.2 711

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11*

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Oct.

166

166

171

160

148

142

173

190

203

203

192

173

*168

154

183

374

673

767

*765

703

618

535

465

421

386

357

338

318

301

291

375

10,279

332

3.32

3.82

Nov.

396

425

407

390

546

655

697

*676

605

542

530

526

519

523

521

513

515

490

466

452

429

410

395

386

375

366

353

347

343

528

14,126

471

4.71

5.25

Dec.

317

303

298

298

315

313

305

293

275

260

249

239

2£9

218

221

218

210

206

200

180

170

158

149

149

166

168

166

156

151

153

144

6,877

222

2.22

2.5S

Calendar year 1955: Max 767

Jan.

146

139

158

176

185

180

170

160

190

240

330

380

390

400

380

350

330

310

290

270

255

240

230

220

216

210

»203

198

196

210

265

7,617

246

2.46

2.83

Feb.

265

281

347

347

355

349

389

427

439

425

407

437

456

458

437

410

380

375

407

412

4O3

364

341

319

328

341

*335

357

368

10,959

378

3.78

4.08

Mln 50

Mar.

357

347

347

347

347

349

371

408

456

470

458

432

410

408

437

442

396

402

417

359

375

405

415

422

407

407

393

384

382

412

425

12,387

400

4.00

4.61

Apr.

437

*446

475

492

493

479

465

506

558

560

534

499

465

434

417

436

456

470

456

425

402

382

364

351

337

326

324

317

313

317

12,936

431

4.31

4.81

Mean 244

May

315

308

315

313

303

293

303

*303

293

286

275

265

257

252

239

236

229

223

218

216

210

203

198

193

186

178

T93

231

242

239

223

7,738

250

2.50

2.88

June

206

193

200

244

257

257

239

213

196

186

180

178

163

*154

141

124

128

131

120

114

116

118

107

114

122

110

105

108

107

1*

4,725

158

1.58

1.76

July

96

101

92

161

166

166

180

.188

180

158

153

168

170

168

149

133

118

112

107

161

176

»171

153

135

122

112

112

114

101

4,300

139

1.39

1.60

Aug.

97

96

92

74

90

73

80

79

77

76

74

72

81

60

77

68

61

58

63

71

7O

70

*70

62

55

59

63

56

55

52

56

2,187

70.5

0.705

0.81

Sept.

43

55

66

69

55

54

54

50

53

59

52

46

51

48

41

62

65

59

52

60

58

48

53

61

53

55

51

56

56

58

1,643

54.8

0.548

0.61

Cfsm 2.44 In. 33.13

Water year 1955-56: Max 767 Mln 41 Mean 262 Cfsm 2.62 In. 35.62

* Discharge measurement made on this day.

Note.--No gage-height record Jan. 5-24, 26j discharge estimated on basis of weather records, recorded range In stage, and records for Wood River at Hope Valley and Pawcatuck River at Westerly.
PAWCATUCK RIVER BASIN 133

Wood River at Hope Valley, R. I.

Location. Lat 41°29'58", long 71°42'57", on right bank 0.2 mile downstream from highwaybridge at Hope Valley, Washington County, and 6.6 miles upstream from mouth.

Drainage area. 72.4 sq ml.

Records available.--August to December 1909 (gage heights only), March 1941 to September 

1956. Records of daily mean discharge for August to December 1909, published in WSP 

261, have been found to be unreliable and should not be used.

Gage. Water-stage recorder and concrete control. Altitude of gage is 65 ft (from topographic map). August to December 1909 staff gage at site 1,000 ft upstream at different datum.

Average discharge. 15 years, 149 cfs .

Extremes.--Maximum discharge during year, 1,270 cfs Oct. 17 (gage height, 6.95 ft); minimum, 29 cfs Sept. 15; minimum daily, 29 cfs Sept. 15.

1941-56: Maximum discharge, 1,470 cfs Sept. 12, 1954 (gage height, 7.45 ft); minimum, 4.4 cfs Oct. 18, 1941; minimum dailyi 10 cfs Oct. 13, 1941.

Flood in March 1936 reached a discharge of 1,540 efs , by computation of peak flow 

over dam a quarter of a mile upstream from station.

Remarks. Records excellent. Some regulation at low flow by mills and ponds above station; 

regulation greater prior to 1948.

Revisions (water years).--WSP 1201: 1948(P). See also Records available.

Rating table, water year 1955-56 (gage height, in feet, and discharge, 

In cubic feet per second)

1.8

1.9 

2.2 

2.5

70

128

3.0 

4.0 

5.0 

7.0

260

488

698

1,290

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf sm

In.

Oct.

144

151

123

107

101

99

238

295

244

218

192

165

*144

138

363

917

1,200

*961

692

562

463

389

334

305

298

278

260

250

244

239 

453

10,567

341

4.71

5.43

Nov.

513

406

350

358

686

713

596

*488

411

368

426

454

400

413

420

402

417

375

339

322

308

295

280

285

280

268

255

252

252

257

11,569

386

5.33

5.94

Dec.

229

216

213

224

247

239

221

208

197

192

181

176

168

*157

157

154

144

138

136

126

110

107

107

110

116

116

112

105

101

105 

103

4,915

159

2.20

2.52

Jan.

101

94

139

151

138

128

119

114

229

409

387

343

*312

282

260

244

237

218

205

194

184

173

165

154

154

146

144

1,38

133

162 

229

6,086

196

2.71

3.13

Feb.

205

216

298

265

247

237

339

350

310

288

288

362

368

324

290

272

252

268

300

288

265

239

226

208

231

257

239

270

265

-----

7,967

275

3.80

4.09

Mar.

234

231

255

260

252

255

288

387

442

387

332

302

285

300

341

339

302

295

290

275

270

272

282

302

292

280

272

278

280

324 

346

9,250

£98

4.12

4.75

Apr.

339

*355

406

424

415

393

364

461

513

469

442

411

373

339

324

409

523

467

406

352

329

305

290

280

268

260

255

244

250

265

10,931

364

5.03

5.61

May

257

242

257

252

239

229

247

239

218

221

218

211

205

194

189

186

178

173

165

162

159

154

146

141

133

123

158

221

189

168 

154

6,028

194

2.68

3.10

June

144

136

184

252

229

194

173

149

136

128

128

114

*110

103

97

92

86

83

78

76

76

78

80

76

75

70

69

69

69

§1

3,421

114

1.57

1.76

July

63

60

5.7

55

64

143

149

110

142

170

121

94

97

168

176

123

99

84

76

70

72

110

123

99

86

76

70

66

64

62

57

3,006

97.0

1.34

1.54

Aug.

55

52

50

47

44

43

43

42

41

40

39

38

35

36

38

48

56

53

43

39

38

41

*43

47

47

46

42

38

36

34 

53

 1,327

42.8

0.591

0.68

Sept.

32

33

39

42

39

36

38

38

36

34

32

32

31

30

29

31

35

38

36

35

35

35

33

33

35

35

32

34

38

39

1,045

34.8

0.481

0.54

Calendar year 1955- Max 1..200 Min 36 Mean 198 cfsm 2.73 In. 37.13

Water year 1955-56: Max 1,200 Min 29 , Mean 208 Cfsm 2.87 In. 39.09

Peak discharge (base, 550 cfs).--Oct. 17 (5 to 6 a.m.) 1.270 cfs (6.95 ft); Nov. 1 (2 to 3 

568 cfs (4.40 ft); Nov. 5 (10 to 11 p.m.) 790 cfs (5.36 ft). 

* Discharge measurement made on this day.
134 PAWCATUCK RIVER BASIN

Pawcatuck River at Westerly, R. I.

Location. Lat 41°23'0l", long 71 0 50'0l", on left bank at Westerly, Washington County, 

2.1 miles downstream from Shunock River.

Drainage area. 295 sq mi.

Records available. November 1940 to September 1956.

Gage. Water-stage recorder. Altitude of gage is at mean sea level (from topographic map).

Average discharge. 16 years, 554 cfs (adjusted for diversion).

Extremes. Maximum discharge during year, 2,800 cfs Oct. 17 (gage height, 8.11 ft); maximum gage height, 8.22 ft Oct. 17 (affected by tide); minimum daily discharge, 103 cfs 

Sept. 15.

1940-56: Maximum discharge, 3,510 cfs Mar. 16, 1952 (gage height, 8.83 ft); maximum gage height, 12.16 f., Aug. 31, 1954 (backwater from tide); minimum daily .discharge, 

25 cfs Aug. 17, 1941.

Flood in Mars}' 1936 reached a discharge of 3,150 cfs, by computation of flow over 

dam l| miles mstream from station. Maximum discharge known, which occurred in November 1927, was possibly more than twice that of March 1936. Maximum stage known, 15.0 

ft Sept. 21, 1938 (due to hurricane tidal wave), from information by local residents.

Remarks. Records good. Regulation at low flow by mills above station. Diversion above 

station.for municipal supply of Westerly.

Revisions. WSP 1051: Drainage area.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

1819 '

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

588

582

550

484

452

439

788

990

948

832

735

651

+ 602

562

771

1,960

2,760

2,680

*2,520

2,320

2,080

1,830

1,610

1,420

1,280

1,190

1,100

1,020

962

920

1,170

36,776

1,186

2.39

Nov.

1,460

1,450

1,350

1,320

1,9OO

2,110

2,090

*1,990

1,840

1,670

1,640

1,670

l.fiOU

1,560

1,600

1,580

1,580

1,510

1,410

1,340

1,280

1,220

1,170

1,130

1,100

1,050

«97

983

969

927

43,496

1,450

2.35

Dec.

878

840

810

818

885

899

855

802

758

7OO

679

616

568

576

562

569

536

524

517

472

435

405

372

372

400

417

411

378

356

350

540

18,120

585

2.56

Jan.

335

315

405

536

517

472

405

388

582

997

1,150

1,180

1,190

1,140

1,060

983

920

870

788

742

700

658

630

576

550

517

*504

517

484

556

810

21,477

693

2.40

Feb.

818

802

1,080

1,090

1,000

997

1,200

1,340

1,300

1,220

1,170

1,320

1,580

1,320

1,240

1,150

1,070

1,070

1,220

1,230

1,150

1,050

941

878

885

962

*976

1,020

1,080

31,959

1,102

2.57

Mar.

1,020

969

976

990

990

976

1,050

1,260

1,440

1,450

1,360.

1,280

1,210

1,210

1,540

1,540

1,260

1,200

1,170

1,110

1,100

1,120

1,150

1,200

1,210

1,170

1,150

1,150

1,150

1,250

1,540

56,551

1,178

2.56

Apr.

1,540

*1,560

1,450

1,500

1,490

1,450

1,560

1,550

1,760

1,740

1,640

1,520

1,410

1,520

1,250

1,560

1,560

1,580

1,470

1,560

1,250

1,170

1,100

1,040

976

941

954

899

"927 892

59,579

1,519

2.56

May

954

885

927

954

878

852

920

*927

870

818

795

758

735

721

686

658

644

616

550

550

569

530

510

504

484

441

517

750

742

658

21,946

708

2.52

June

562

510

562

772

825

750

672

609

556

504

504

478

*447

441

585

550

540

556

525

520

510

500

285

290

315

505

255

290

265

252

15,095

436

3.14

Jvly

260

241

223

201

246

459

517

491

545

595

556

465

453

569

650

576

465

400

540

295

285

459

524

*478

429

572

555

500

295

290

275

1Z.567

405

5.12

Aug.

241

256

232

181

197

205

169

173

177

189

151

154

169

165

162

162

158

154

140

165

165

165

»158

165

157

144

165

154

151

151

144

5,259

170

5.41

Sept.

121

124

144

154

151

140

144

121

124

144

159

134

131

128

105

106

128

134

150

140

140

112

118

154

144

150

137

140

150

151

5,996

155

2.59

Adjusted for diversion

Mean 

Cf sm 

In.

1,189 

4.03 

4.65

1,452 

4.92 

5.4£

Calendar year 1955: 

Water year 1955-56:

587 

1.99 

2.29

695 

2.36 

2.72

1,104 

3.74 

4.04

1,181 

4.00 

4.61

1,322 

4.48 

5.00

710 

2.41 

2.78

Observed

Max 2,760 Min 110 Mean 751 

Max 2,760 Min 103 Mean 778

440 

1.49 

1.66

409 

1.59 

1.60

173

0.586 

0.68

156 

0.461 

0.51

Adjusted

Mean 754 Cfsm 2.56 In. 34.67 

Mean 781 Cfsm 2.65 In. 36.03

* Discharge measurement made on this day.

t Diversion, equivalent in cubic feet per second, for municipal supply of Weste 

nished by Westerly Board of Water Commissioners.

?ly. Records fur-
POQUONOCK RIVER BASIN 135

Great Brook at Poquonock Bridge, Conn.

Location. Lat 41°20'57", long 72 0 02'17", In midchannel on upstream side of weir-gate 

structure, 800 ft downstream from Groton Reservoir dam, a quarter of a mile upstream 

from bridge on U. S. Highway 1 at head of Poquonock River, a quarter of a mile northwest of Poquonock Bridge, New London County, and 2.3 miles east of Groton.

Drainage area. 14.3 sq ml.

Records available. January 1946 to September 1956.

Gage. Point gage above three sharp-crested weirs; gage read three times daily. Venturi 

meters at filter plant to measure diversion and wash water. Staff gages on Proton, 

Pohegnut and Ledyard Reservoirs and Smith Lake, to determine changes in contents. Datum 

of point gage is 2.78 ft above mean sea level, datum of 1929.

Average discharge. 10 years, 26.6 cfs.

Extremes. 1946-56: Maximum discharge, 464 cfs {300 mgd) 1 a.m. Sept. 12, 1954 (gage 

height, 5.1 ft, from floodmarks), uncorrected for storage and diversion.

Remarks. Records adjusted for change in contents in Groton, Pohegnut and Ledyard Reservoirs and Smith Lake, and for diversion for water supply of the borough of Groton.

CooperatIon. Venturi-meter records and gage readings furnished by the borough of Groton, 

Department of Utilities.

Monthly discharge, water year October 1955 to September 1956

Month

Water year 1955-56. .....

Runoff 

(millions of 

gallons)

1,153.0 

1,200.0 

429.3

6,857.2

599.5 

1,106.0 

1,139.1 

1,085.4 

593.1 

307.4 

356.0 

89.7 

115.5

8,174.0

Mean

Millions 

of gallons 

per day

37.2 

40.0 

13.8

18.8

19.3 

38.1 

36.7 

36.2 

19.1 

10.2 

11.5 

' 2.89 

3.85

22.3

Cubic feet 

per 

second

57.6 

61.9 

21.4

29.1

29.9 

58.9 

56.8 

56.0 

29.6 

15. S 

17.8 

4.47 

5.96

34.5

Discharge per 

square mile

Millions 

of gallons 

per day

2.60 

2.80 

.965

1.31

1.35 

2.66 

2.57 

2.53 

1.34 

.713 

.804 

.202 

.269

1.56

Cubic feet 

per 

second

4.02 

4.33 

1.49

2.03

2.09 

4.12 

3.98 

3.91 

2.07 

1.10 

1.24 

.313 

.416

2.41

Runoff 

in 

inches

4.64 

4.83 

1.72

27.59

2.41 

4.44 

4.59 

4.36 

2.39 

1.23 

1.43 

.36 

.46

32.86
THAMES RIVER BASIN 

Willlmantic River near South Coventry, Conn.

Location. Lat 41°45'02", long 72°15'58" , on left bank 700 ft upstream from highway bridge, 

1 mile downstream from Mill Brook, 2.4 miles southeast of South Coventry, Tolland 

County, 2.8 miles upstream from Hop River, and 6.3 miles upstream from mouth.

Drainage area. 121 sq mi.

Records available. September 1931 to September 1956.

Gage. --Water- stage recorder. Datum of gage is 239.05 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers).

Average discharge. 25 years, 215 cfs.

Extremes . Maximum discharge during year, 2.990 cfs Oct. 16 (gage height, 9.29 ft); minimum, 17 cfs July 4 (gage height, 3.42 ft); minimum daily, 18 cfs July 4.

1931-56: Maximum dip charge, 24,200 cfs-Aug. 19, 1955 (gage height, 18.66 ft, from 

floodmark), from rating curve extended above 3,600 cfs on basis of computation of flow 

over dam at 7,880 ofs and contracted-opening determination of peak flow; minimum, 

2.0 cfs Aug. 21, 22, 1949 (gage height, 1.60 ft); minimum daily, 2.E cfs Sept. 18, 1949.

Remarks. --Re cords excellent except those for periods of ice effect, which are good. Flow 

regulated by mills and reservoirs upstream.

Revisions (water years ). WSP 781: 1934 (m), drainage area. WSP 851: 1935-36. WSP 1201-

19S2('4,m) , 1933-34, 1937, 1939-42.

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

4.2

4.5 

5.0

Oct. 1 to Nov

115

185

340

770

1,940

2,720

3.4 

3.6 

3.8

4.0 

4.4

Nov. 5 to Sept. 30

5.0 

6.0 

7.0 

9.0

355

690

1,110

2,630

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day Oct.

182

r 171

15 ';

1 14>_

E

6

7

8

9

10

11

12*

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Cfsm

In.

 "123

138

*393

493

416

316

Z4<<

195

172

202

1,850

*2,710

2,090

1,340

915

705

580

504

440

416

484

468

408

368

330

373

1,480

18,801

606

5.01

5.78

Nov.

1,130

690

516

7F

-,<--

1,500

800

638

568

498

760

760

6EO

725

708

638

638

532

480

459

436

418

394

403

588

358

334

331

*319

289

18,936

631

5.21

5.81

Dec.

268

250

244

? Rz

313

328

298

256

228

210

180

188

170

170

180

175

150

152

142

b!30

b!30

b!20

b!20

b!20

b!30

b!40

129

121

115

121

H3_

5,662

183

1.51

1.74

Jan.

105

89

93

109

115

121

115

105

198

445

400

334

334

304

250

220

205

b!90

b!78

180

b!52

b!30

b!40

b!30

b!30

b!30

b!30

b!30

b!25

150

b210

5,647

182

1.50

1.73

Feb.

b!92

190

247

b218

192

tlfau

£28

*274

256

235

228

307

343

307

289

295

271

250

230

218

208

180

175

168

202

334

310

307

262

7,096 -J45

2! 18

Mar.

228

228

271

391

418

364

515

638

550

430

385

409

394

376

38E

346

280

b304

310

301

b319

316

340

b349

b319

319

313

313

325

325

301

11,059

357

2.95

3.40

Apr.

286

313

473

602

800

1,040

1,060

860

725

*742

840

840

840

800

800

960

1.270

880

690

585

498

448

442

466

412

385

385

352

439

620

19,853

662

5.47

6.10

May

550

424

424

406

370

304

316

304

283

298

322

301

268

253

244

228

198

172

175

190

190

190

188

218

192

165

168

210

202

168

165

8,086

261

2.16

2.49

June

222

265

1.050

805

476

346

310

235

198

180

*205

192

165

152

152

135

135

155

148

140

131

125

117

101

89

86

82

91

91

78

6,637

221

1.83

2.04

July

63

73

44

18

27

149

172

111

119

148

127

74

70

133

168

127

101

86

74

*70

70

95

86

71

63

59

57

49

41

42

*47

2,634

85.0

0.702

0.81

Aug.

40

35

38

38

32

33

40

36

34

36

33

29

35

42

36

30

32

29

26

28

45

46

46

38

39

29

29

31

29

29

,_8

1,071

54.5

0.285

0.33

Sept.

29

28

40

42

40

36

45

54

36

34

42

32

32

38

42

35

40

49

44

*52

60

50

36

60

71

71

57

109

101

70

1,475

49.2

0.407

0.45

Calendar year 19rt5: Max 12,100 Min £4 Mean 345 Cfsm 2.85 In. 38.66

Water year 1955-56: Max 2,710 Min 18 Mean 29" Cfsm 2.41 In. 32.86

Peak discharge (base, 1.100 cfs). Oct. 16 (10 a.m.) 2.990 cfs (9.29 ft): Oct. 31 (1 p.m.) 1,700

cfs 7.66 ft); Nov. 5 (11 to 12 a.m.) 2,150 cfs (8.48 ft); Apr. 6 (2 a.m.) 1,160 cfs (7.11 ft);

Apr. 17 (10 a.m.) 1,330 cfs (7.41 ft); June 3 (12 m.) 1,270 cfs (7.29 ft).

* Discharge measurement made jn this day.

b Stage-discharge relation affected by ice.
THAMES RIVER BASIN 137

Hop River near Columbia, Conn.

Location. Lat 41°43'39", long 72°18'10", on right bank 1,500 ft downstream from abandoned 

mill and dam at village of Hop River, 2 miles north of Columbia, Tollan<i County, and 

4.2 miles upstream from mouth.

Drainage area. --76. 2 sq mi.

Records available. September 1932 to September 1956.

Gage . Water-stage recorder. Datum of gage is 249.25 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers).

Average discharge . 24 years, 131 cfs.

Extremes. --Maximum discharge during year, 4,820 cfs Oct. 16 (gage height, 14.20 ft, fiom 

floodmark); minimum, about 3 cfs June 29 (gage height, 2.61 ft).

1932-56: Maximum discharge, 6,450 cfs Sept. 21, 1938" (gage height, 16.25 ft, from 

floodmarks), by computation of peak flow over dam a quarter of a mile upstream; minimum, 

2.4 cfs Aug. 19, 1939 (gage height, 2.55 ft); minimum daily, 2.6 cfs Aug. 28, 1949; minimum gage height, 2.49 ft Aug. 3, 1936.

Remarks . Records excellent except those for periods of ice effect, which are good. 

frequent regulation at low water.

InRevisions (water years). WSP 781: 

1935-36(M).

1933 (M), drainage area. WSP 1111: 1947(rr). WSP 1301:

Rating tables, water year 1955-56, except periods of lee effect 

and discharge, In cubic feet per second)

3.4 

3.7 

4.0 

5.0

Oct. 1-31

57 7.0

88 10.0

126 12.0

586 13.0

Nov. 1 to July 28

ge height, In feet, 

July 28 to S?pt. 30

780

2,010

3,190

3,890

3.0 

3.4 

4.0

20 5.0

7.0 

10.0

800

2,010

3.2 

3.5 

3.9

Discharge, In cubic feet per second, water year October 1955 to September 195

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

116

101

81

71

*J32_

92

339

268

255

189

151

129

110

126

2,020

*4.170

.2,410

1,090

701

522

417

365

309

284

321

279

254

233

221 

276

1,170

17 , 130

553

7.26

8.37

Nov.

725

498

385

491

1.670

832

566

448

360

310

498

460

560

491

498

460

485

360

298

281

257

239

218

235

212

196

182

175

166 

. 144

12,498

417

5.47

6.10

Dec.

141

135

142

182

255

193

155

140

128

122

109

108

b97

b91

*99

b91

85

85

81

b65

b60

b55

b50

b55

b65

b75

b68

b59

b55 

b53

b49

3,126

101

1.33

1.53

Jan.

b48

b48

b47

45

46

b48

b47

b45

bllO

*b260

204

255

257

202

158

140

122

118

112

97

90

b85

b85

b80

b80

b75

b75

74

80 

88

170

3,391

109

1.43

1.65

Feb.

152

132

231

b!75

150

136

214

*239

206

194

185

398

335

255

233

233

173

175

193

180

157

bl!5

bl!2

b98

160

272

194

191

152

5,640

194

2.55

2.75

Mar.

b!29

T3F

214

322

262

228

427

510

472

322

279

281

239

235

284

239

194

202

178

173

161

172

198

241

235

194

191

191

191 

204

198

7,499

242

3.18

3.67

Apr.

212

298

485

548

698

785

660

53F

51!

*546

560

460

398

335

298

460

472

348

274 zr.i

5-Us

185

185

194

170

163

172

155

398

11,273

376

4.93

5.50

May

310

235

267

233

222

189

202

178

152

J3-1

172

147

140

126

118

112

103

101

108

104

as

88

91

122

93

82

106

138

104 

88

82

4,490

145

1.9O

2.19

June

97

149

698

548

335

226

168

131

105

95

 118

93

77

65

54

48

97

66

48

42

39

41

38

35

35

29

27

31

28

3,589

120

1.57

1.75

July ! 3uf. -..:-. - ,

£4

22

2O

18

29

118

83

56

58

63

45

36

35

80

111

61

50

39

31

27

28

47

41

33

*28

24

21

20

17

15

*_14

1,294

41.7

0.547

0.63

! j _ j.

IL.

11

11

10

10

1011

12

11

3.1

9.1

9.1

10

9.1

7.9

7.6

7.3

7.0

776

10

13

T2

11

12

10

9.4

*8.8

8.5 

8.5

9.1

" 306.1

9.87

0.135

0.16

_;

1C

10

9.4

8.8

26

a23

a22

a21

a20

a20

a!9

a!9

a!9

aoO

a37

a35

*35

36

34

30

28

31

30

19

16

43

40

31

724.6

24.2

0.318

0.35

Calendar year 1955: Max 4,170 Mln 8.4 Mean 204 Cfsm 2.68 In. 36.33

Water year 1955-56: Max 4,170 Mln 7.O Mean 194 Cfsm 2.55 In. 34.65

(9.36 ft); Nov. 5 (9 a.m.) 2,110 cfs (10.22'ft); Apr.'6 (1 a.mi) 965 cfs~(7.55 ft)i

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range In stage, weather records 

and records for other stations In the Shetucket River basin.

b Stage-discharge relation affected by Ice.
138 THAMES RIVER BASIN

Safford Brook near Woodstock Valley, Conn.

Location. Lat 41°55 T 35", long 72°03 t 37", on right bank on downstream side of town road 

bridge, 0.3 mile downstream from Bradford Brook, 0.3 mile upstream frorr mouth, 1.2 miles 

southeast of Woodstock Valley, Wlndham County, and ? miles southwest of West Woodstock.

Drainage area. 4.08 sq mi.

Records available. June 1950 to September 19S6.

Gage. Water-stage recorder. Datum of gage Is 552.92 ft above mean sea level, datum of 

1929.

Average discharge. 6 years, 9.84 cfs.

Extremes.--Maximum discharge during year, 300 cfs Nov. 5 (gage height, 4.£4 ft); minimum, 

about 0.02 cfs Aug. 19, 20.

1950-56: Maximum discharge, 1,000 cfs Aug. 19, 1955 (gage height, £.68 ft); minimum, 0.01 cfs Aug. 30 to Sept. 12, Sept. 18-21, 1953; minimum gage height, 1.17 ft 

Sept. 4-12, 1953.

Remarks.--Records good except those for periods of no gage-height record, which are poor.

Rating tables, water year 1955-56, except periods of loe effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Jan. 9

1.8 

2.0

0.8

1.6

2.6

5.8

11

2.5 

3.0 

3.5 

4.2

103

190

1.3

1.4

1.5

1.6

Jan. 9 to Sept. 3O

0.01 

.14 

.51

2.2 3.4

5.1

10

28

58

93

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

4.4

3.4

2.4

2.0

*1.8

9.4

35

18

12

7.0

4.9

4.0

3.4

7.4

176

163

90

38

24

17

13

10

8.8

9.0

15

10 

8.2

7.0

6.5

9.7

38

758.3

24.5

6.00

6.92

Nov.

18

12

9.6

71

155

30

23

16

13

11

30

20

13

30

22

21

20

13

a 10

a9.3

*9.3

8.5

8.0

10

8.2

7.2 

6.5

7.5

b6.8

5.6

-.. . -

604.5

20.2

4.95

5.52

Dee.

4.9

4.5

5.4

blO

12.

7.7

6.3

4.5

4.2

4.0

3.6

3.3

3.0

2.7

2.9

b2.9

2.5

2.4

2.4

1.9

1.5

1.2

1.4

1.4

1.8

1.9 

1.7

1.5

1.4

1.4

1.5

108.8

3.51

0.860

0.99

Jan.

1.4

1.2

1.2

1.4

1.5

1.6

1.4

1.6

b43

30

b!6

b!7

b!5

9.5

7.3

6.9

6.2

6.0

4.6

4.1

4.0

3.8

3.8

3.8

3.8

3.8 

3.5

3.4

3.4

7.0

b!5

232.2

7.49

1.84

2.12

Feb.

bll

b9.2

b20

blO

b6.9

b5.5

bl2

*b!2

b9.5

b7.3

b9.0

b32

b22

b!4

13

ID 14

blO

7.1

6.6

6.2

b5.5

b4.3

b4.3

b4.0 17 

b26 

b!4

11

b7.3

- -.

330.7

11.4

2.79

3.01

Mar.

b6.2

7.1

17

b33

b21

13

31

32

24

b!5

15

18

12

11

12

16

20

12

11

10

7.8

8.6

9.5

9.2

b8.4

7.1 

b6.6

b6.9

b6.9

7.8

b7.6

422.7

13.6

3.33

3.84

Apr.

b8.9

b!2

26

36

86

84

57

24

21

*29

46

47

42

40

38

81

62

29

20

15

13

12

13

13

9.5

9.2 

9.2

7.8

24

30

944.6

31.5

7.72

8.61

May

16

12

13

10

8.4

7.3

7.6

6.4

5.3

9.7

8.1

6.0

5.5

4.8

4.6

4.1

3.8

3.8

4.0

4.0

3.5

3.2

3.8

4.6

3.5

3^1 

6.2

7.1

4.3

3.5

4.5

191.7

6.18

1.51

1.74

June

8.4

9.5

5332"

13

7.8

5.5

4.1

3.5

3.5

3.1

2.7

2.2

1.9

1.5

1.4

1.3

1.2

1.0

.95

.88

1.0

.95

.82

.62

tt

.75

.56

.42

------

164.48

5.48

1.34

1.50

July

0.30

.19

.16

.tli .40

5.3

2.8

1.7

2.6

2.3

1.5

.95

.75

3.1

3.8

2.1

1.6

1.1

.75

*.46

.69

2.0

1.6

1.0

.75

.46 

*.56

.42

a. 30

a. 25

a. 20

40.23

1.30

0.319

0.37

Aug.

aO.15

a. 13

a. 10

a. 08

a. 07

a. 06

a. 06

a. 06

a.O6

a. 06

a. 05

a. 05

a. 06

a.O5

a. 04

a. 03

a.O3

a. 02

a. 02

a. 03

a. 14

.16

.10

.10

.14

.10 

.06

.05

.04

.04

.04

2.18

0.070

0.017

O.O2

Sept.

~^8 O.O5

.16

.10

.06

.06

1.5

.51

.22

.14

.10

.08

.12

.10

.10

.69

.88

*.75

.42

.95

1.1

.56

.42

1.8

1.4

.75 

.51

6.0

3.1

1.7

-----

24.41

0.814

0.200

0.22

Calendar year 1955; Max 445 Mln 0.4 Mean 1O.6 cfsm 2.6O in. 35.13

Water year 1955-56: Max 176 Mln O.O2 Mean 10.5 Cfsm 2.57 in. 34.86

Peak discharge (base. 120 efs). Oct. 16 (4 to 5 p.m.) 242 cfs (4.55 ft); Nov. 5 (12:3O a.m.) 3OO 

cfs (4.84 ft); Apr. 5 (7 p.m.) 156 cfs (3.97 ft); Apr. 6 (6:30 to 7 p.m.) 12O cfs (3.66 ft); Apr. 16 

(8 to 8:30 p.m.) 135 cfs (3.80 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for stations 

on nearby streams.

b Stage-discharge relation affected by Ice.
THAMES RIVER BASIN 139

Mount Hope River near Warrenville, Conn.

Location.--Lat 41°50'37", long 72°10'10", on left bank 250 ft downstream froir Knowlton 

Brook, 700 ft upstream from bridge on State Highway 89, if miles south of Warrenville, 

Windham County, and 3^ miles southwest of Ashford.

Drainage area.--29.1 sq ml.

Records available. July 1940 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 335.57 ft above mean sea level, datum of 

1929.

Average discharge.--16 years, 50.6 cfs.

Extremes.--Maximum discharge during year, 920 cfs Nov. 5 (gage height, 6.66 ft); minimum, 

1.8 cfs Aug. 18, 19 (gage height, 1.30 ft).

1940-56: Maximum discharge, 5,590 cfs Aug. 19, 1955 (gage height, 10.41 ft), from 

rating curve extended above 890 cfs on tiasis of contracted-opening determination of 

peak flow; minimum, 0.35 cfs Aug. 5, 1955; minimum gage height, 0.99 ft AUT. 26-29, 

1949.

Flood In September 1938 reached a stage of about 14.5 ft, from floodmarks.

Remarks. Records excellent except those for periods of ice effect or no gage-height record, which are good.

Revisions (water years).--WSP 1331: 1941(M), 1951-53(M).

Rating tables, water year 1955-56, except periods of tee effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Nov. 4 Nov. 5 to Sept. 30

1.8 

2.0 

2.5 

3.0

78

143

4.0 298

5.0 474

6.0 690

7.0 1,09O

1.3 

1.5 

1.7 

2.0 

2.5

1.8

6.1

14.5

34

81

3.0 

3.5 

4.0 

5.0 

6.0

150

225

275

430

675

Discharge, in cubic feet per second, wate October 1955 to September 1356

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

45

34

28

26

*24

56

190

116

91

59

46

39

42

60

614

*816

513

273

198

143

114

95

83

78

97

80

67

60

55

so

256

4,478

144

4.95

5.71

Nov.

135

91

83

233

656

270

194

138

113

97

192

132

101

201

a!60

a!30

al!5

a!05

a 90

a80

*77

73

. 68

78

67

60

56

SB

b52

b46

3,929

131

4.50

5.02

Dec.

b45

b41

45

65

79

59

b46

b44

b39

36

b32

b32

b29

E8

31

b29

27

26

25

19

18

16

b!6

b!8

b22

b22

b!8

b!6

b!5 bT5~

b!6

969

31.3

1.08

1.24

Jan.

b!4

b!4

b!5

b!8

b20

b!9

b!6

b!6

b!03

bl42

b93

b70

b73

60

53

51

45

b41

b38

b36

b34

b32

b30

b29

b28

b27

b26

b25

b25

b40

b68

1,301

42.0

1.44

1.66

Feb.

b47

b47

b78

63

56

48

85

*79

65

60

63

144

bTTo"

b88

79

b79

b64

57

b53

b49

b46

b42

39

36

77

113

b77

72

b60

1,976

68.1

2.34

2.52

Mar.

b51

b56

83

142

107

83

176

184

147

b!06

97

103

89

89

98

b80

b70

b72

b73

b68

b66

b69

b76

b73

b69

b65

b60

b66

b65

70

b65

2,718

87.7

3.01

3.47

Apr.

72

92

162

190

296

518 "85

202

*184

210

250

240

218

192

178

275

255

172

132

10 i

93

83

87

85

12.

71

70

65

142

177

4,975

166

5.70

6.36

May

"81 106

96

79

72

67

71

60

54

74

65

56

53

48

45

40

40

40

41

42

38

34

39

48

37

33

49

58

42

36

68

1,712

55.2

1.90

2.19

June

116

97

352

212

117

81

63

53

45

44

44

36

32

26

21

19

25

19

16

14

15

17

14

13

12

10

11

14

13

9.7

1,560.7

52.0

1.79

2.00

July

8.3

7.9

6.1

5.4

16

48

27

16

28

23

14

11

12

48

42

22

18

13

9.7

*8.3

9.7

22

16

12

9.7

7.9

*8.6

7.9

6.5

5.4

494.0

15.9

0.546

0.63

A'^Tj

4.1

3.6

3.2

3.1

2.7

2.7

2.9

2.7

3.1

3.1

2.5

3.1

4.1

3.4

2.9

2.5

2.2

2.0

2.0

3.1

4.6

5.8

4.1

a3.5

a4.0

a3.0

2.5

2.2

2.2

2.0

2.2

95.1

3.07,

0.105

0.12

".=pt.

£.5

3.1

4.4

3.2

2.7

2.2

13

6.8

4.6

3.6

3.1

2.9

I'.l'

3.4

6.1

8.6

*8.6

5.8

8.3

9.7

6.8

5.6

15

12

7.9

8.6

51

28

14

257.5

8.58

0.295

0.33

Calendar year 1955: Max 2,640 Min 0.7 Mean 69.5 Cfsm 2.39 In. 32.42

Water year 1955-56: Max 816 Min 2.0 Mean 66.8 Cfsm 2.30 In. 31.25

Peak discharge (base, 4OO cfs). Oct. 16 (5:3O p.m.) 912 cf 

cfs (6.66 ft); Apr. 5 (8 p.m.) 460 cfs (5.16 ft); June 3 (7 a

* Discharge measurement made on this day.

a No gage-heighb record; discharge estimated on basis 

and records for Natchaug River at Willimantic.

b Stage-discharge relation affected by ice.

(6.63 ft); Nov. 5 (3 to 4 a.m.) 920 

m.) 502 cfs (5.33 ft).

orded range in stage, weather re
140 THAMES RIVER BASIN

Mansfield Hollow Reservoir at Mansfield Hollow, Conn.

Location.--Lat 41°45'22", long 72°10'57", on Natchaug River at Mansfield Hollow, Tolland 

County, 0.2 mile downstream from Mount Hope River and 3-| miles northeast of Willimantic, 

Windham County.

Drainage area. 159 sq mi.

Records available. --March 1952 to September 1956.

Gage. Water-stage recorder. Datum of gage Is at mean sea level, datum of 1929 (levels by 

Corps of Engineers).

Remarks.--Reservoir completed in March 1952 for flood control, has usable capacity of 

2,260,000,000 cu ft.

Cooperation. Records furnished by Corps of Engineers.

Month-end elevation and contents, water

Date

Sept. 30. ...................

Oct. 31....................

Nov. 30. ...................

Dee. 31....................

Calendar year 1955.......

Water year 1955-56. ......

Elevation 

(feet)t

207.3

199.7

-

199.6

-

Contents 

(millions of 

cubic feet)

5.5

50.2

1.9

.6

-

3.1

.5

-

Change in contents 

(millions of 

cubic feet)

_

+44.7

-48.3

-1.3

-19.2

+ .3

+ .7

+ 17.5

-t-.E

-5.0

 ear October 1955 to September 1956

t Elevation at 12 p.m.
THAMES RIVER BASIN 141

Natchaug River at Willimantic, Conn.

Location. Lat 41°43'14", long 72°11 I 52", on right bank 200 ft downstream from New York, 

New Haven and Hartford Railroad bridge, 500 ft upstream from bridge on U. S. Highway 6, 

1 mile northeast of Willimantic, Windham County, 1.7 miles upstream from mouth, and 

4 miles downstream from Mount Hope River.

Drainage area. 169 sq mi.

Records available. October 1930 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 150.31 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers).

Average discharge. 26 years, 306 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 3,230 cfs Oct. 19 (gage height, 8.57 ft); minimum, 6.0 cfs on several days during August (gage height, 2.05 ft); minimum daily, 

6.0 cfs Aug. 5, 8, 12.

1930-56: Maximum discharge, 32,000 cfs Sept. 21, 1938 (gage height, 16.39 ft, from 

floodmarks), by computation of peak flow over dam 2 miles upstream from station; minimum, about 0.3 cfs Aug. 6, 1937; minimum daily, 2.3 cfs Sept. 11, 12, 1943.

Remarks. Records excellent. City of Willimantic diverts an average of about 1,000,000 

gal of water a day for municipal supply from reservoir 2 miles upstream. Operatipn of 

water wheels at this location cause diurnal fluctuation at low flow. .Since March 

1952, flow regulated by Mansfield Hollow" Reservoir (see preceding page).

Revisions (water years).--WSP 1301: 1934-35(M), 1937(M).

Rating tables, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

Oct. 2O to Sept. 30

2.8 

3.0 

5.0 

7.0 

9.0

145

212

1,130

2,210

3,59O 2.6

3.0

5.0 

7.0 

9.0

197 

1,O7O 

2,110 

3,590

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Itotal

Mean

(t)

Oct.

29O

320

212

184

161

184

772

883

700

506

371

304

262

278

366

397

742

2,540

5.110

2.97O

2,600

2,150

1,680

1,160

794

678

565

484

439

426

*744

27,272

880

+16.7

Nov.

1,240

858

632

655

632

1,950

2,550

1,950

1,370

902

880

1,020

835

855

1,040

925

925

790

655

588

534

511

466

48O

466

418

582

366

358

506

25,319

844

-18.6

Dec.

302

278

286

342

470

430

325

*282

251

243

200

214

181

175

200

171

159

162

159

124

111

103

94

103

113

132

120

103

91

96

101

6,121

197

-0.5

Jan.

96

76

91

84

96

103

101

98

266

855

790

601

542

452

362

342

259

262

247

251

210

190

187

175

175

170

178

165

159

197

*330

8,090

261

+0.6

Feb.

290

259

422

374

522

278

598

502

422

570

562

655

745

574

488

480

4O2

578

594

562

510

256

251

214 290"

606

488

452

342

11,666

402

0

Mar.

SOS 522"

402

601

678

552

678

948

948

745

652

601

574

547

601

542

590

50O

410

590

450

414

*452

484

422

422

398

390

410

430 

426

16,045

518

+0.3

Apr.

43O

52T

722

902

1,04O

1,370

1.47O

1,470

1,270

1,120

1,200

1,240

1,200

1,140

1,070

1,170

1,270

1,370

1,570

1,020

790

678

610

655

574

524

534

488

606 

fli OJ.C^

28,639

955

+6.8

May

855

655

585

560

5O6

459

444

402

550

578

430

358

522

298

274

255

245

252

247

247

228

204

211

318

251

208

228

358

286 

225

2X8

10,793

348

O

June

390

450

476

1.O90

1.420

855

454

322

270

251

259

225

191

165

144

127

127

127

108

98

96

103

103

87

91

81

78

76

90 

77

8,371

279

-7.8

July

74

59

64

63

75

197

242

140

126

161

113

95

82

125

255

153

116

98

81

*72

68

84

113

94

81

72

67

66

66

11

*£R WOD

3,175

102

0

Aug.

7.8

56

64

7.8

6.0

61

7.8

6.0

55

6.6

50

6.0

~^.4 66

45

19

14

25

18

25

27

61

26

39

25

52

30

19

31 

26

19

845.4

27.3

0

Sept.

32

20

38

38~7.2

54

85

89

64

18

32

34

53

22

30

36

65

66

50

*55

65

65

57

66

29

53

68

127

183 112-

1,613.2

53.8

+0.1

Adjusted for change in contents in Mansfield Hollow Reservoir

Mean 

Cfsm 

In.

897 

5.31 

6.12

82E 

4.8E

5.4:4

Calendar year 1955: 

Water year 1955-56:

196 

1.16 

t 1.34

262 

1.55 

1.79

402 

2.58 

2.57

518 

5.07 

5.54

962 

5.69 

6.55

548 

2.06 

2.58

Observed

Max 3,110 Min 6.9 Mean 428 

Max 3,110 Min 6.0 Mean 404

271 

1.60 

1.78

102 

0.604 

0.70

27.5 

0.162 

0.19

53.9 

0.319 

0.36

Adjusted

Mean 427 Cfsm 2.53 In. 54.55 

Mean 404 Cfsm 2.39 In. 52.56

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Mansfield Hollow Reservoir; furnished 

by Corps of Engineers.
THAMES RIVER BASIN

"at

Shetucket River near Willimantic, Conn.

Location. Lat 41°42'0l", long 72°10'57", on right bank at downstream side of Bingham 

Bridge, 500 ft upstream from New York, New Haven & Hartford Railroad bridge, 500 ft 

downstream from Potash Brook, 1.3 mile downstream from confluence of Willimantic and 

Natchaug River, and l| miles southeast of Williamantic County.

Drainage area. 401 sq mi.

Records available . April 1904 to December 1905 (monthly discharge only in WSP 1301), 

October 1919 to September 1921 and September 1928 to September 1933 (published as "z 

South Windham"), October 1933 to September 1956.

Gage. Water-stage recorder. Datum of gage is 131.40 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers). Apr. 4, 1904, to Dec. 31, 1905, chain gage at 

about same site and about the same datum. October 1919 to Sept. 30, 1921, and Sept. 1, 

1928, to Sept. 30, 1933, water-stage recorder at site lj miles downstream at different 

datum.

Average discharge. 31 years (1904-5, 1919-21, 1928-56), 712 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 9,580 cfs Oct. 16 (gage height, 11.61 ft); minimum, 36 cfs Aug. 1, 2 (gage height, 1.45 ft); minimum daily, 57 cfs Aug. 12.

1904-5, 1919-21, 1928-56: Maximum discharge, 52,200 cfs Sept. 21, 1938. (gage-height 

27.6 ft, from floodmarks), from rating curve extended above 11,000 cfs on basis of 

computation of peak flow over Scotland and Baltic Dams, 5 and 9 miles downstream, respectively, adjusted for flow from intervening area; minimum, 15 cfs Ai'g. 29, 1949 

(gage height, 1.34 ft); minimum daily, 19 cfs Aug. 22, Oct. 24, 1949; minimum gage 

height, 1.32 ft Oct. 20, 1935.

Remarks. Records excellent except those for period of doubtful gage-heiglrt record, which 

are good. Flow regulated by mills on Willimantic River, on Natchaug River by pumping 

for municipal supply of city of Willimantic, and by Mansfield Hollow Reservoir (see 

p. 140).

Revisions (water years). WSP 781; 1934(m). WSP 801: 1935. WSP 1201: 1905(M) , 1920-21 

1931-32, 1934-351M), 1937(M).

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Jan. 11 Jan. 11 to Sept. 30

2.3 248

2.6 354

3.0 520

4.0 1,060

6.0 2,490

8.0 4,550

11.0 8,610

1.5 

1.7 

2.0 

2.5

142

286

3.0 475

4.0 980

6.0 2,470

8.0 4,550

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 .

18

19

20

21

22 

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

665

685

545

453

408

465

*1,650

1,800

1,540

1,170

892

735

655

675

3,330

8.500

7,190

5,710

5,080

4,450

3,800

3,230 

2,620

2,070

1,790

1,640

1,420

1,270

1,170 

1,200

3,020

69,628

2,246

+16.7

Nov.

3,640

2,330

1,790

1,860

4,450

5,000

4,190

3,330

2,490

1,970

2,550

2,670

2,090

2,170

2,670

2,250

2,410

1,970

1,650

1,540

1,440

1,370 

1,240

1,270

1,240

1,150

1,060

1,030

970

64,670

2,156

-18.6

Iiec .

820

770

770

910

1,180

1,120

910

*795

720

685

585

620

535

515

580

532

468

479

472

354

359

329 

322

334

377

409

385

325

303

312

316

17,591

567

-0.5

Jan.

310

271

270

279

301

313

306

305

620

1,650

1,520

1,280

1,250

1,070

835

785

670

610

592

588

511

467

467

429

446

424

434

406

369 

472

*760

19,010

613

+0.6

Feb.

710

660

1,010

860

760

690

950

1,190

1,040

920

860

1,420

1,650

1,320

1,130

1,130

980

890

950

920

785

625 

625

542

660

1,250

1,160

1,040

860

27,567

951

0

Mar.

760

785

920

1,220

1,560

1,350

1,420

2,290

2,290

1,710

1,460

1,420

1,350

1,280

1,420

1,320

950

1,130

1,010

950

980

1,010 

*1,100

1,220

1,100

1,100

1,040

1,040

1,040

1,070

1,070

38,365

1,238

+0.3

Apr.

1,070

1,220

1,750

2,200

2,650

3,430

5.550

5,450

2,830

2,740

2,930

2,830

2,740

2,650

2,470

2,740

3,330

3,130

2,830

2,290

1,870

1,560 

1,380

1,420

1,520

1,190

1,190

1,100

1,550

1,910

67,080

2,256

+ 6.8

May

1,870

1,420

1,550

1,280

1,190

1,010

1,040

980

860

920

1,010

860

810

760

710

660

610

565

583

596

565

534 

524

710

596

511

556

785

665 

542

520

25,592

826

0

June

735

890

2-, 170

2.850

2,470

1,520

980

760

655

588

655

588

498

445

405

355

395

403

355

324

315

509 

295

269

251

233

220

241

255 

222

20,607

687

-7.8

July

197

182

166

128

152

495

574

355

328

407

330

251

200

536

572

386

306

 255

221

202

207

264 

266

24-1

207

ies

177

169

*lfO 

°5

iT^ 142

8,166

263

0

Aug.

91

94

132

85

64

116

84

67

115

73

87

57

114

90

110

76

59

75

63

66

92

m102

90

86

78

67

80 

72

66

2,692

86.8

0

Sept.

80

68

96

75

94

98

184

190

149

89

111

103

99

99

116

121

150

166

*130

142

176

169 

123

168

159

158

163

295

367 

250

4,388

146

+0.1

Adjusted for change in contents in Mansfield Hollow Reservoir

Mean 

Cfsm 

In.

2,265 

5.64 

6.50

2,157 

5.32 

5.95

Calendar year 1955: 

Water year 1955-56;

566 

1.41 

1.63

614 

1.53 

1.76

951 

2.37 

2.47

Observec

1,258 

3.09 

3.56

2,243 

5.59 

6.24

826 

2.06 

2.38

Max 13,000 Min 71 Mean 1,051 

Max 8,300 Min 57 Mean 998

679 

1.69 

1.89

263 

0.656 

0.76

86.8 

0.216 

0.25

146 

0.364 

0.41

Adjusted

Mean 1,050 Cfsm 2.62 In. 35.56 

Mean 998 Cfsm 2.49 In. 53.80

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Mansfield Hollow Reservoir; furnished by Corps of Engineers.

Note. Doubtful gage-height record Mar. 9 to May 2; discharge computed from stage record adjusted 

on basis of enelneers' notes
THAMES RWER BASIN 143

Little River near Hanover, Conn.

Location Lat 41°40'18", long 72°03'10", in Windham County, on left bank 800 ft upstream 

from bridge on town road, 0.7 mile downstream from Peck Brook, 2.3 miles rortheast of 

Hanover, New London County, and 6.5 miles upstream from mouth.

Drainage area. 29.8 sq mi.

Records available. July 1951 to September 1956.

^a£f9 P9Water~ Stage recorder - Datum of gage ls 221.19 ft above mean sea leve] , datum of

Average discharge. --5 years, 69.8 cfs.

Extremes. Maximum discharge during year, 1,220 cfs Oct. 16 (gage height, 6.C4 ft), from 

rating curve extended as explained below; minimum, 6.4 cfs Sept. 6 (gage height, 

1 . 13 i u ) t

1951-56: Maximum discharge, 1,400 cfs Aug. 19, 1955 (gage height, 6.48 ft), from 

rating curve extended above 820 cfs by logarithmic plotting; minimum, that of Sept. 6, 

1956; minimum gage height, 1.03 ft Sept. 10, 11, 1953.

Remarks.-- Records good.

Rating tables, water year 1955-56, except periods of ice effect (gage height, 

in feet, and discharge, Ln cubic feet per second)

Nov. 1 to Sept. 30

1.6 

1.9 

2.3 

3.0 

4.0 

6.0

31

59

120

255

515

1,200

1.1 

1.3 

1.5 

2.0 

2.5

5.5

12.5

23

72

156

3.0 255

4.0 515

5.0 830

5.7 1,080

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

3

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

67

57

45

39

36

52

322

206

140

96

75

62

54

63

498

1.070 

834

388

247

189

152

129

107

102

124

102

89

80

76

84

174

5,759

186

6.24

7.19

Nov.

138

102

85

160

668

334

191

145

122

106

211

179

131

189

183

169 

173

129

107

102

*94

88

80

94

83

76

69

69

67

59

4,403

147

4.93

5.50

Dec.

59

55

58

69

.92.

75

62

56

50

48

b44

43

b39

b39

38

38 

b38

b35

b33

b31

b28

b26

26

26

29

b29

b28

b25

b23

b22

b2?

1,286

41.5

1.39

1.60

Jan.

b22

b21

21

22

23

b23

b22

b22

136

179

118

111

113

86

72

69 

b56

b55

*b54

48

b42

b43

b43

b42

b40

b36

34

32

b34

46

b85

1,750

56.5

1.90

2.19

Feb.

b63

b62

125

b82

68

59

122

125

96

85

98

245

T7I

124

104

102 

78

82

94

89

75

b62

b56

b48

75

124

83

83

b67

2,745

94.7

3.18

3.31

Mar.

b62 B"?

99

122

106

94

185

221

189

133

116

115

100

107

138

116 

b83

b97

78

83

b79

79

*89

102

b91

80

80

86

89

97

3,278

106

3.56

4.10

Apr.

Ill

147

221

229

255

280

225

211

195

201

229

189

156

152

122

205 

260

171

134

111

99

88

83

86

73

71

75

68

94

116

4,657

155

5.20

5.80

May

94

75

86

76

79

68

79

68

58

69

69

59

56

51

49

46 

46

44

46

47

43

39

38

63

48

41

54

75

54

43

41

1,804

58.5

1.96

2.26

June

40

46

223

258

138

89

66

52

45

43

45

38

33

30

26

24 

24

23

21

21

20

22

20

19

18

17

T7

21

25

19

1,483

49.4

1.66

1.85

July

17

16

15

14

23

58

38

25

30

30

22

19

17

36

38

26 

*21

18

16

15

16

28

23

19

*17

15

14

13

12

11

10

672

21.7

0.728

0.84

Aug.

10

9.7

9.3

8.9

8.5

8.5

8.2

8.2

8.2

7.9

7.9

7.6

11

10

9.3

8.5 

7.9

7.6

7.3

7.0

8.9

11

8.9

8.9

9.3

8.2

7.6

7.6

7.6

7.6

7.6

264.7

8.54

0.287

0.33

Sept.

7.6

7.6

7.6

7.0

6.7

7.0

23

15

10

8.5

7.9

7.6

7.6

7.6

7.9

12 

13

12

*9.7

10

13

10

8.9

10

12

9.7

8.9

47

31

18

363.8

12.1

0.406

0.45

Calendar year 1955: Max 1,070 Min 9.8 Mean 83.6 Cfsm 2.81 In. 38. C7

Water year 1955-56 : Max 1,07O Min 6.7 Mean 77.8 Cfsm 2.61 In. 35.42

Peak discharge 

(4.94 ft).

(base. 400 cfs) . Oct. 16 (9 p.m.) 1,220 cfs (6.04 ft); Nov. 5 (11 a.m.) 812 cfs

Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
144 THAMES RIVER BASIN

Quinebaug River at Westville, Mass.

Location. Lat 42°04'23", long 7S°04'28", on right bank 350 ft upstream from highway 

bridge, 0.45 mile downstream from Breakneck Brook, 0.6 mile west of Westville, 

Worcester County, and if miles west of Southbridge.

Drainage area, 93.8 sq mi.

Records available.--July 1939 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 537.66 ft above mean sea level, unadjusted 

(levels by Corps of Engineers).

Average discharge. 17 years, 166 cfs.

Extremes.--Maximum discharge during year, 1,510 cfs Oct. 17 (gage height, 6.81 ft); minimum daily, 11 cfs Aug. 15, 16.

1939-56: Maximum discharge, 17,500 cfs Aug. 19, 1955 (gage height, 16.11 ft, from 

floodmarks), from rating curve extended above 1,300 cfs on basis of slope-area determination of peak flow; minimum daily, 2.2 cfs June 26, 1949.

Flood in September 1938 reached a discharge of 8,400 cfs, by slope-area determination.

Remarks,--Records excellent except those for periods of ice effect, which are fair. 

Medium and low flows regulated by mills and reservoirs above station.

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Nov. 1 to Sept. 30

2.7 

3.1 

3.5 

4.0 

5.0 

6.0 

7.0

80 1.9 8.4

138 I 12

211 2.2 22

321 2.5 51

625 3.0 123 

1,060 

1,620

Discharge, in cubic feet per second, water year October 1955 to September 1956

220

340

640

1,060

1,620

Day

1

2

3

4

5

6

7

8

9

10

11

12

13*

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Tota:

Mean

Cfsm

In.

Oct.

113

107

99

90

84

107

203

246

246

211

182

157

138

*150

*635

1,180

1.460

1,310

1,020

795

633

530

466

427

424

395

362

319

250

207 

331

12,877

415

4.42

5.11

Nov.

404

375

312

365

884

1,040

916

734

596

512

554

593

563

542

*524

503

515

461

381

351

330

309

292

289

279

265

251

244

235

220

13,839

461

4.91

5.49

Dec.

207

199

199

220

265

263

235

212

191

177

b!65

*162

150

117

107

b95

, blOO

110

b86

b55

b93

b69

b64

67

74

b70

b72

b67

63

63

b58

4,071

131

1.40

1.61

Jan.

b56

b50

52

58

60

61

64

59

b210

370

364

356" 384

314

284

256

229

b210

b!95

183

b!70

b!60

*b!55

b!40

b!30

b!30

b!30

127

bl!5

112

115

5,299

171

1.82

2.10

Feb.

blOO

ITT

130

bl!2

120

107

136

145

149

143

136

170

197

193

189

205

193

b!75

b!80

170

b!50

b!20

b!25

bl!5

161

284

294

277

238

4,831

167

1.78

1.92

Calendar year L955: Max 11,400 Min 26

Mar.

*216

210

249

b325

345

314

359

404

38T

345

319

324

312

296

279

204

b!50

b200

b!75

b!85

b235

b255

254

b215

b245

b245

235

220

214

214

207

8,137

262

2.79

3.23

Apr.

203

214

254

*314

456

640

750

703

661

626

644

682

726

766

794

916

1,200

1,140

938

774

661

590

557

539

500

470

446

370

367

425

18,326

611

6.51

7.27

Hay

*428

401

381

367

381

389

370

345

322

324

319

309

302

282

265

212

185

166

195

183

168

156

149

143

136

128

141

156

150

145

139

7,737

250

2.67

3.07

June

156

170

307

*384

362

284

220

171

143

132

133

115

102

92

84

78

86

89

82

73

68

65

59

78

117

92

78

74

54

46

3,994

133

1.42

1.58

Mean 292 Cfsm 3.11

July

49

49

47

39

44

128

136

1C6

1C4

1C1

£2

70

63

73

£3

73

*70

64

E4

46

46

es

55

£8

77

76

64

£5

44 

*>8

53.

2,082

67.2

0.716

0.83

Aug.

30

30

29

25

24

23

24

31

3322"

22

21

18

18

JL1

11

27

33

20

21

23

*23

22

20

19

18

17

15

16 

16

678

21.9

0.233

0.27

Sept.

17

18

19

19

17

32" 15

38

28

23

20

19

21

21

19

22

27

30

26

26

29

28

26

*36

50

42

.107

^n119

52

1,020

34.0

0.362

0.40

In. 42.18

Water year 1955-56: Max 1,460 Min 11 Mean 227 Cfsm 2.42 In. 32.88

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Note.--Discharge in cubic feet per second per square mile and runoff in inches mey not 

natural flow because of regulation.
THAMES RIVER BASIN 145

Quinebaug River at Quinebaug, Conn.

Location. Lat 42°01'20", long 71°57'22" ,. on right bank at Quinebaug, Windham County, 

500 ft upstream from highway bridge on State Highway 197, 0.25 mile downstrean from 

Massachusetts-Connecticut State line, 7.8 miles upstream from French River, aid at 

mile 46.

Drainage area . 157 sq mi.

Records available .--September 1931 to September 1956.

Ga e. --Water- stage recorder. Datum of gage is 341.52 ft above mean sea level, datum of

Average discharge. 25 years, 282 cfs.

Extremes . Maximum discharge during year, 2,830 cfs Oct. 17 (gage height, 6.68 ft); minimum, about 1 cfs Sept. 4; minimum daily, about 1 cfs Sept. 4.

1931-56: Maximum discharge, 49,300 cfs Aug. 19, 1955 (gage height, 18.96 ft, from 

f loodmarks ) , from rating curve extended above 5,100 cfs on basis of slope-area determination of peak flow; minimum, about 1 cfs Sept. 9, 1943, July 12, 1949, Sept. 17, 18, 

1950, July 9, 1951, Sept. 4, 1956; minimum daily, that of Sept. 4, 1956; minimum gage 

height, 1.74 ft Aug. 20, 1940.

Remarks . Records good except those for periods of backwater from aquatic vegetation or 

no gage-height record, which are fair. Flow regulated by mills upstream.

Revisions (water years). WSP 851: 

1938(M).

1936(M). WSP 1201: 1939-43, 1947, 1949. W,?P 1381:

Rating tables, water year 1955-56, except periods of ice effect or backwater froir 

aquatic vegetation (gage height, in feet, and discharge, in cubic feet per second)

Nov. 1 to Sept. 30

2.6 

3.0 

4.0 

5.0 

7.0

103

248

755

1,410

3,120

2.0 

2.2 

2.4 

2.6

3.0 240

4.0 755

6.0 2,220

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

IE

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

181

16O

146

132

119

172

465

490

465

390

330

277

248

261

1,120

2,420

2.710 

*2,200

1,580

1,160

923

779

673

618

64O

596

546

485

410

376 

673

21,745

701

4.46

5.14

Nov.

656

590

497

741

1,970

1,730

1,340

1,060

845

719

905

875

785

785

755

719

719 

646

552

514

464

*453

431

431

415

385

361

348

338

312

21,341

711

4.53

5.05

Dec.

294

272

280

316

*405

380

334

298

264

256

b228

b208

b200

b!53

153

146

150 

153

150

b!40

b!30

b!45

b!25

110

100

100

135

130

105 

105

90

6,055

195

1.24

1.43

Jan.

85

85

1OO

95

90

90

90

85

500

750

700

600

500

400

360

320

300 

270

250

230

215

210

210

205

200

b200

196

184

164

200 

316

8.10O

261

1.66

1.91

Feb.

b!84

200

244

208

212

*196

268

276

268

260

256

366

375

356

352

370

334 

307

298

280

252

b200

b208

b!96

266

453

475

420

343

8,384

289

1.84

1.98

Mar.

316

312

395

558

558

502

624

678

SW

546

519

530

486

464

*442

370

b243 b3Z~8"

312

334

348

370

380

370

370

370

343

330

316

325 

302

12,983

419

2.67

3.08

Apr.

312

*348"

448

552

905

,270

,410

,130

,000

,OOO

,100

,160

,240

,270

,3OO

,770

,220 

,850

,410

,130

935

845

785

 785

690

656

624

546

612

713

30,016

1,001

6.38

7.12

May

*656 59*6"

574

530

530

524

508

475

431

458

448

420

405

385

348

316

272 

272

256

264

268

216

220

212

192

180

2150"

244

232

220

11,060

357

2.27

2.62

June

252

276

536

640

5J6

436

343

280

232

208

208

180

146

132

116

106

116 

*113

103

91

80

83

77

91

172

125

94

94

74

51

6,007

200

1.27

1.42

July

54

89

49

50

78

176

208

160

172

160

*119

94

100

110

113

106

100 

86

67

90

52

78

88

60

110

91

»78

52

54 

45

39

2,928

94.5

0.602

0.69

Aug.

39

34

34

32

31

25

28

28

37

32

47 ~S2

20

14

19

11

9 

13

40

25

39

*37

30

28

27

14

20

18

19 

20

22

814

26.3

0.168

0.19

Sept.

34

3

51

1

11

20

20

30

39

28

23

23

23

25

20

20

32 

*35

32

34

32

32

33

45

49

49

75

~3f 167

67

1,142

38.1

0.243

0.27

Calendar year 1955: Max 26,500 Min 10 Mean 488 Cfsm 3.11 In. 42.22

Water year 1955-56: Max 2,710 Min 1 Mean 357 Cfsm 2.27 In. 30.90

Peak discharge (base. 1,000 cfs).--Oct. 17 (10 a.m.) 2,830 cfs (6.68 ft); Nov. 5 (9 a.m.} 2,090 

cfs (5.83 ft); Apr. 6 (9 to 10 p.m.) 1,530 cfs (5.15 ft); Apr. 17 (2 to 4 a.m.) 2,400 cfs (6.16 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Dec. 24 to Jan. 24; discharge estimated on basis of recorded range in 

stage, Heather records, and records for stations at Westville and Putnam. Backwater from aquatic 

vegetation July 14 to Sept. 30.
146 THAMES RIVER BASIN

Little River at Buffumville, Mass.

Location. Lat 42°06'57", long 71°53'26" , on left bank 0.6 mile upstream from Boston 

& Albany Railroad bridge, 0.6 mile upstream from mouth, 0.8 mile east of Buffumville, 

Worcester County, and 1.5 miles west of Oxford.

Drainage area. 27.7 sq mi.

Records available.--July 1939 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 457.00 ft above mean sea level, unadjusted 

(levels by Corps of Engineers),

Average discharge. 17 years, 48.5 cfs.

Extremes.--Maximum discharge during year, 518 cfs Apr. 17 (gage height, 5.41 ft); minimum, 

3.0 cfs Sept. 2; minimum daily, 3.1 cfs Aug. 9, Sept. 2.

1939-56: Maximum discharge, 8,340 cfs Aug. 19, 1955 (gage height, 15.53 ft); from 

rating curve extended above l.SOO cfs on basis of computation of peak flow over damminimum, 0.5 cfs Nov. 28, 29, 1949, July 30, 1950, Aug. 1, 1955; minimum daily, 0.5 cfs 

Nov. 28, 1949.

Remarks.--Records good except those for periods of no gage-height record, which are fair 

Flow regulated by reservoirs and mill above station.

Revisions (water years).--WSP 1201: 1940, 1948.

Rating tables, water year 1955-56 (gage height, In feet, and 

discharge, In cubic feet per second)

Nov. 1 to Sept. 3O

2.7

2.8

3.0 

3.2

Note. Same as following table above 3.2 

ft.

2.2 

2.4 

2.6 

2.8 

Z.O

3.0

6.2

11

21

37

3.2 

3.5 

4.0 

5.5

61

108

197

540

Discharge, In cubic feet per second, water year October 1955 to Septemter 1956

Day

1

2

3

4

5

6

7

8

9

10

11 .

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

33

44

30

21

20

30

82

138

114

90

88

79

67

67

141

338

356" 390

223

171

138

118

94

104

105

102

96

90

77

88

151

3,629

117

4.22

4.87

Nov.

175

140

116

122

320

320

221

164

135

117

140

169

147

145

138

*140

137

128

117

106

106

106

99

99

99

96

91

88

87

80

4,148

138

4.98

5.57

Dec.

77

80

80

87

105

104

*91

67

53 ' 46

38

35

33

30

17

17

29

27

27

25

22

21

21

20

21

22

33

24

8.8

18

1,293.8

41.7

1.51

1.74

Jan.

18

28

21

10

TT

17

18

20

128

264

219

158

123

104

85

72

66

57

44

46

44

40

*46

31

36

36

45

31

25

37

43

1,923

62.0

2.24

2.58

Feb.

54

49

36

43

43

51

53

52

54

54

42

64

79

67

63

77

~§4 100

90

90

87

72

67

66

71

87

94

85

77

1,961

67.6

2.44

2.63

Calendar year 1955: Max 5,180 Mln 1.0

Mar.

*58

32

48

106

123

114

94

112

98

79

72

75

67

74

63

58

56

52

51

30

54

53

39

62

46

57

47

61

57

69

51

2,058

66.4

2.40

2.76

Apr.

57

72

90

110

160

*262

327

262

199

183

211

2 4O

267

286

300

352

496

397

275

219

195

160

156

153

138

125

118

112

132

160

6,204

207

7.47

8.33

May

154

*130

111

LOS

100

87

54

52

57

63

74

67

61

56

51

51

44

44

42

40

37

34

33

32

30

28

33

44

42

39

40

1,835

59.2

2.14

2.46

June

67

88

124

223

*T54

100

74

50

45

39

38

39

28

24

24

21

20

18

16

15

14

28

13

T76" 6.8

7.4

10

11

11

9.7

1,324.9

44.2

1.60

1.78

July

8.6

6.2

7.7

7.2

1C

33

IF

21

3£

3f

10ia

24

13

11

25

8.8

*15

14

27

14

7.0

9.8

12

23

19

5.8

9.2

6.2

6.6

470.9

15.2

0.549

0.63

Aug.

6.5

5.8

6.0

5.5

5.3

5.2

19

7.8

3.1

372

3.4

3.6

3.7

3.7

3.7

3.4

3.8

3.4

3.4

3.8

3.7

3.7

4.3

4.8

4.8

4.6

4.4

4.2

3.8

3.7

4.3

149.6

4.83

0.174

0.20

Sept.

4.9

la

3.2

*3.8

4.8

6.4

8.0

10

9.0

8.0

7.0

6.5

7.0

8.0

11

14

19

19

13

19

20

13

15

20

20

*13

21

17

20

27.

370.7

12.4

0.448

0.50

Mean 85.5 Cfsm 3.O9 In. 41. 9O

Water year 1955-56: Max 496 Mln 3.1 Mean 69.3 Cfsm 2.50 In. 34.05

Discharge measurement made on this day. 

Note. No gage-height record Oct. 17, 18, Sept. 7-26; discharge estimated on basis of 2 discharge 

measurements, weather records, recorded range In stage, and records for Ware River at Coldbrook and 

Qulnebaug River at Westvllle.
THAMES RIVER BASIN 147

French River at Webster, Mass.

Location. Lat 42°03'03", long 71"53'08", on right bank 50 ft upstream from Pleasant 

Street Bridge at Webster, Worcester County, and 1.1 miles upstream from Potash Brook.

Drainage area.--85.3 sq mi.

Records available.--December 1948 to September 1956.

Page. Water-stage recorder. Datum of gage is 406.74 ft above mean sea level, datum of 

1939.

Average discharge.--? years (1949-56), 179 cfs.

Extremes. Maximum discharge during year, about 1,300 cfs Oct. 17; minimum daily, 6.8 cfs 

Aug. 5, 26, Sept. 9.

1948-56: Maximum discharge, 14,400 cfs Aug. 19, 1955 (gage height, 26.05 ft, from 

floodmarks), from rating curve extended above 2,400 cfs on basis of computation of 

peak flow over dam; minimum daily, 2.9 cfs Sept. 30, 1951.

Flood of Mar. 19, 1936, reached a discharge of 4,700 cfs, by computation of flow 

over dam about half a mile upstream.

Remarks. Records good except those for periods of no gage-height record, which are fair 

Flow regulated by mills and by Lake Chaubunagungamaug (estimated usable capacity, 

207,000,000 cu ft) and smaller reservoirs above station.

Rating tables, water year 1955-56 (gage height, In feet, and discharge,

In cubic feet per second)

(Backwater from debris Oct. 1-15; shifting-control method used 

Oct. 23-3O, Mar. 22 to Apr. 15, Apr. 20 to May 8)

Oct. 1-31 Nov. 1 to July 30 July 31 to Sept. 30

5.0 

5.5 

6.0 

7.0 

9.0

80

107

204

341

621

1,260

4.6 8.1

4.7 14

4.9 31

5.1 58

5.5 147

6.0 297

7.0 621

9.0 1,260

4.57

4.6

4.7

4.8 

5.0 

5.2

6.8

8.1

15

24

51

92

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

30

31

Total

Mean

Cfsm

In.

Oct.

123

113

120

103

98

90 I'ee

269

263

209

207

197

167

*176

334

al,000

al.200 

a'1,000

789

621

509

436

391

383

394

366

321

305

274

277

407

11,308

365

4.28

4.93

Nov.

546

476

391

4O1

738

a920

759

592

512

418

449

492

469

452

*466

463

456 

415

398

378

357

340

*327

30O

337

297

265

304

275

 253

13,246

442

5.18

5.78

Dec.

265

262

225

259

514

297

*275

256

237

198

198

233

142

131

141

119

120 

134

138

153

138

121

98

80

56

104

130

126

108

95

106

5,289

171

2.00

2.31

Jan.

121

S2

111

90

91

90

62

89

326

655

683

574

446

378

307

275

265 

256

240

225

187

181

*198

190

175

175

175

164

155

187

190

7,343

237

2.78

3.20

Feb.

190

195

195

167

TST

198

210

219

213

207

184

259

294 2l6"

228

228

246 

234

243

250

231

222

204

192

181

243

275

259

237

6,441

222

2.60

2.81

Mar.

*216

201

284" 175

347

327

323

364

347

297

271

275

265

262

259

246

219 

204

201

216

228

268

300

278

271

297

268

265

256

256

262

8,248

266

3.12

3.60

Apr.

256

262

278

*304

442

*652

759

705

601

580

604

657

699

726

756

813

al.060 

al,060

849

726

652

604

577

577

546

515

489

463

476

537

18,225

608

7.13

7.95

May

*553 486"

415

384

327

304

268

213

156

175

181

158

144

107

112

120

115 

111

91

109

120

103

101

102

96

62

84

128

120

95

130

5,670

183

2.15

2.47

June

152

213

262

*540

*528

344

228

181

155

150

130

123

119

93

8O

52

63 

99

83

83

77

70

19

35

90

79

60

50

*8.1 19~

4,165.1

140

1.64

1.82

July

37

44

43

39

48

82

102

86

125

I5T

100

91

79

10

24

81

*83 

*82

81

78

12

23

92

84

87

84

99

10

10

95

71

2,103

67.8

0.795

0.92

Aug.

69

52

27

7.6

-jj_._8

72

46

10

13

14

12

16

11

73

49

47

25

9.1

8.6

69

57

»37

46

35

7.6

6.8

49

52

30

28

9.8

1,063.3

34.3

0.402

0.46

Sept.

7.6

8.8

9.2

10

74

74

67

*8.1

6.8

74

70

52

52

56

8.6

8.1

72 

74

69

70

66

8.6

8.8

*70

69

70

59

78

13

61

1,374.6

45.8

0.537

0.60

Calendar year 1953: Max 6,170 Mln 7.2 Mean 247 Cfsm 2.90 In. 39.39

Water year 1955-56: Max 1,200 Mln 6.8 Mean 231 Cfsm 2.71 In. 36.85

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records, records for Quinebaug 

River at Westvllle and Little River at Buffumvllle, and record for adjacent days.

Note. Discharge In cubic feet per second per square mile and runoff In Inches may not represent 

natural flow because of regulation.
148 THAMES RIVER BASIN

Quinebaug River at Putnam, Conn.

Location. Lat 41°54'34", long 71°54'48", on left bank at Putnam, Wlndham County, 0.15 mile 

downstream from Little River, 0.3 mile upstream from New York, New Haven and Hartford 

Railroad bridge, 2.8 miles downstream from French River, and at mile 35.7.

Drainage area. 331 sq mi.

Records available.--October 1929 to September 1956. October and November 1929 monthly discharge only, published in WSP 1301.

Gage. Water-stage recorder. Datum of gage is 216.76 ft above mean sea level, datum of 

1929.

Average discharge. 27 years, 578 cfs.

Extremes. Maximum discharge during year. 5,150 cfs Oct. 17 (gage height, 10.34 ft from 

floodmarks); minimum, 33 cfs Aug. 14 (gage height, 1.80 ft); minimum daily, 44 cfs 

Sept. 5.

1929-56: Maximum discharge, 48,000 cfs Aug. 19, 1955 (gage height, 26.5 ft from 

floodmarks); minimum, 8.0 cfs Aug. 9, 1953 (gage height, 1.54 ft); minimum daily, 11 cfs 

Oct. 5, 12, 1930.

Remarks. Records excellent except those for periods of no gage-height record, which are 

fair. City of Putnam diverts an average of- less than 1 mgd from Little River for municipal supply. Large diurnal fluctuation, particularly during low flow, caused by 

many dams and reservoirs above station, largest of which is Lake Chaubimagungamaug with 

an estimated usable capacity of 207,000,000 cu ft.

Revisions (water years). WSP 781: Drainage area, 1934(M) . WSP 1301: 1931-33(M) , 1935(M).

Rating tables, water year 1955-56, except periods of ice effect (gaje 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Jan. 9

3.0 194

4.0 465

5.0 870

7.0 2,080

9.O 3,780

11.0 5,880

Jan. 1O to Sept. 30 

1.9 42

2.3

3.0 244

4.0 595

5.0 1,120

7.0 2,570

9.0 4,3*0

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4 

5

6

7

8

9

10

11

12

13 

14

15

16 \

17*

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf sm

In.

Oct.

460

420

400

370 

350

400

900

1,100

1,050

900

800

650

600 

630

2,010

4,300

5,050

*4,280

3,420

2,800

2,200

1,700

1,500

1,400

1,400

1,300

1,200

1,100

950 

900

1,300

45,820

1,478

4.47

5.15

Nov.

1,350

1,250

1,200

1,500 

3,600

3,500

3,000

2,400

1,900

1,700

1,800

1,800

1,750 

1,700

1,650

1,600

1,600

1,500

1,350

1,200

1,100

1,050

1,OOO

1,000

950

900

850

820

800 

780

46,600

1,553

4.69

5.23

Dec.

700

630

650

750 

950

900

740

670

*630

610

540

480

460 

320

300

*296

291

336

325

311

3OO

345

293

256

234

232

b285

b300

b240 

234

b205

13,813

446

1.35

1.56

Jan.

b!95

b!95

Z28

216 

203

b205

b205

b!95

844

2.240

1,990

1,700

1,480 

1,260

1,060

970

855

780

730

708

640

595

595

b575

b590

640

567

543

515 

579

618

22,716

733

2.21

2.55

Feb.

531

547

*662

b550 

543

523

708

755

755

730

662

910

1,060 

940

805

830

780

730

685

685

64O

563

b510

495

BIT

1,000

1,000

940

805

20,915

721

2.18

2.35

Calendar year 1955: Max 26,400 Min 37

Mar.

*708

640

755

1,090 

1,260

1,120

1,330

1,580

1,550

1,260

1,120

1,090

1,060 

940

*97O

880

708

755

730

755

755

830

880

880

805

830

80S

780

730 

755

755

29,106

939

2.84

3.27

Apr.

755

880

1,060

1,260 

1,840

*2,720

3,040

2,640

2,280

2,200

2,420

2,570

2,640 

2,640

2,720

3,040

4,240

3,940

3,040

2,500

2,130

1,840

1,740

1,740

1,550

1,410

1,330

1,220

1,330

1,580

64,295

2,143

6.47

7.22

May

,550

,370

,220

,090 

,030

970

970

855

755

755

780

730

708 

662

640

503

483

527

428

435

499

396

439

455

352

3"B"5" 332

451

491 

400

400

21,031

678

2.05

2.36

June

511

531

901

1,620 

1,440

1,060

755

618

511

467

451

386

342 

310

298

298

228

234

221

211

206

199

194

194

252

228

201

196

182 

148

13,393

446

1.35

1.51

July

134

154

116

125 

146

258

307

272

258

301

316 2"52

185

228

231

204

199

*185

169

167

165

182

177

165

187

189

*178

148

140

121

5,987

193

0.583

C.67

Aug.

119

Tie

109

105 

102

90

90

93

89

85

90

72

60 

12

69

73

68

64

76

71

81

100

87

87

84

75

64

65

66

66

68

2,556

82.5

0.249

0.29

Sept.

69

70

74

69 

44

58

124

102

93

92

84

81

81 

82

89

92

97

*107

102

112

123

116

105

121

123

128

132

301

236

3,287

110

0.332

0.37

Mean 928 Cfsm 2,80 In. 38.10

Water year 1955-56: Max 5,030 Min 44 Mean 791 Cfsm 2.39 In. 32.53

se, 2,000 efs) . Oct. 17 (6 a.m.) 5,150 cfs (10.34 ft); Nov. 5 (time unknown) 

.. 10 ( 12:30 a.m.) 3,480 cfs (8.13 ft, 1.63 ft higher than natural peak, 2,200 

to sharp release of water from some upstream source); Apr. 7 (6 a.m.) 3,120 cfs

Peak discharge (base 

about 3,700 cfs; Jan

cfs at 3 a.m. , owing i>u aiiai-t-j i-cj-caoe uj. waiter ii'um 

(7.69 ft); Apr. 17 (12:30 p.m.) 4,440 cfs (9.06 ft).

* Discharge measurement made on this day

Note. No gage-height record Oct. 1 to Nov. 29, Dec. 1, 3-6, 8, 10-14; discharge estimated on basis 

of floodmarks, stage observations by engineers on Oct. 18, Nov. 30, Dec. 2, 7, 9, and records for 

stations at Westville and Quinebaug.
THAMES RIVER BASIN 149

Five Mile River at Killingly, Conn.

Location. Lat 41"50'14", long 71"53'09", at upstream left abutment of New York, New 

Haven and Hartford Railroad bridge, 0.5 mile upstream from Whetstone Brook, 0.6 mile 

south of Killingly, Wlndham County, and 3.2 miles upstream from mouth.

Drainage area. 58.2 sq ml.

Records available. October 1937 to September 1956. October 1937 monthly discharge only, 

published In WSP 1301.

Gage. Water-stage recorder. Datum of gage Is 222.22 ft above mean sea level, datum of 

1929.

Average discharge. 19 years, 107 cfs.

Extremes. Maximum discharge during year, 1,020 cfs Oct. 17 (gage height, 5.27 ft); minimum, 6.6 cfs July 2 (gage height, 0.75 ft); minimum dally, 16 cfs Aug. 4.

1937-56: Maximum discharge, 2,480 cfs July 24, 1938 (gage height, 8.52 ft); minimum, 3.8 cfs Aug. 24, 1941 (gage height, 0.44 ft); minimum daily, 5.6 cfs Aug. 13, 

1939, Aug. 24, 1941, Nov. 24, 1939, Nov. -15, 1952.

Flood of Mar. 12, 1936, reached a discharge of 1,600 cfs, by computation of flow 

over dam at Danielson.

Remarks. Records excellent. Plow regulated by dams and reservoirs upstream. 

Revisions (water years).--WSP 921: 1938-40, WSP 951: 1938-41.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, 

In cubic feet per second)

1.5 

2.0 

3.0 

4.0 

6.0

66

ISO

397

635

1,280

Nov. 1 to Sept.

.9 12 2.3

.1 23 3.0

.3 40 4.0

.7 94 5.0

230

380

625

925

Discharge, In cubic feet per second, water year October 1955 to September 19^6

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

91

91

81

74

71

77

150

165

177

1S9

149

135

125

125

334

802

958

82!

S70

533

430

3SO

309

275

267

246

227

211

197 

192

*331

8,846

285

4.30

5.65

Nov.

360

310

278

290

685

640

500

400

350

310

340

36O

320

330

340

310

30O

278

248

235

220

208

198

200

195

185

178

173

168

161

9,070

302

5.19

5.79

Dec.

157

147

145

156

170

160

125

96

*90

86

86

86

80

77

78

78

73

73

74

66

54

50

64

63

73

71

74

66

63

66

63

2,810

90.6

1.56

1.80

Jan.

63

53

66

59

64

68

61

61

217

540

290

272

260

238

215

199

183

171

*163

159

152

147

146

139

136

133

134

124

124

138

171

4,746

153

2.63

3.03

Feb.

146

153

155

107

98

94

12T

116

102

111

117

242

260

236

219

211

189

188

188

176

159

141

131

123

141

185

175

177

160

4,621

159

2.73

2.94

Mar.

147

146

168

185

186

183

227

278

290

268

252

245

235

235

242

232

202

218

194

208

196

185

186

198

198

189

180

174

170

166

168

6,351

205

3.52

4.06

Apr.

168

T78

235

262

320

412

462

462

*438

400

425

438

425

412

4OO

450

640

562

475

400

370

330

300

290

260

238

222

202

222

235

10,633

354

6.08

6.78

May

220

202

192

188

188

149

107

104

93

94

93

82

86

97

97

97

99

96

96

100

99

90

92

130

113

100

107

134

120

109

118

3,692

119

2.04

2.35

June

147

130

166

234

226

188

148

ll!2

102

100

94

92

86

80

64

57

62

69

56

49

41

49

37

44

54

41

40

42

43

24

2,677

89.2

1.53

1.71

July

37

30

33

29

36

69

69

71

61

61

53

50

43

62

70

55

56

*57

46

41

38

40

50

43

35

37

36

17

29

48 .

*27

1,429

46.1

0.792

0.91

A'lg.

38

28

34

16

29

45

31

30

30

35

23

25

46

41

34

30

33

19

32

48

41

40

37

33

20

33

47

30

30

37

31

1,026

33.1

0.569

0.66

Sept.

23

36

34

47

30

33

49

40

38

49

34

35

29

44

29

49

61

48

*29

38

36

24

34

48

40

30

31

58

59

51

1,186

39.5

0.679

0.76

Calendar year 1955: Max 1,150 Mln 7.6 Mean 150 Cfsm 2.58 In. 34.90

Water year 1955-56: Max 958 Mln 16 Mean 156 Cfsm 2.68 In. 3S.44

Discharge measurements made on this day.
150 THAMES RIVER BASIN

Moosup River at Moosup, Conn.

Location Lat 41°42'37", long 71°53'll", on right bank at outlet of tailrace from Majestic Metal Specialties, Inc. (formerly Aldrich Bros.) mill at Moosup, Windham County, 

100 ft upstream from New York, New Haven and Hartford Railroad bridge, 0.5 mile downstream from Ekonk Brook, and 3.8 miles upstream from mouth.

Drainage area. 83.5 sq mi.

Records available. October 1932 to September 1956.

Gage. Water-stage recorder. Datum of gage is 196.64 ft above mean sea level, datum of ~

Average discharge . 24 years, 165 cfs.

Extremes .--Maximum discharge during year, 2,930 cfs Oct. 16 (gage height, 7.00 ft); minimum, 1.8 cfs Aug. 4 (gage height, 0.51 ft); minimum dally, 5.2 cfs Sept . 2.

1932-56: Maximum discharge, 4,260 cfs Mar. 12, 1936 (gage height, 8.35 ft), from 

sharp, short rise of unknown origin; maximum natural discharge, 4, 103 cfs July 24, 

1938 (gage height, 8.20 ft), from rating curve extended above 1,500 cfs on basis of 

computation of flow over dam a quarter of a mile upstream at gage heights 6.9 and 

8.2 ft; minimum, 0.1 cfs Feb. 3, 1934; minimum gage height, 0.36 ft Oct. 17, 1947; 

minimum daily discharge, 1.1 cfs Aug. 24, 1949.

Remarks. Records excellent except those for periods of ice effect, which are good. Low 

flow completely regulated by mills upstream.

Revisions (water years) .--WSP 81: Drainage area. WSP 851: 1933, 1934 (M), 1935-37.

Rating tables, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Apr. 16 Apr. 17 to Sept. 30

1.1 

1.3 

1.5 

2.0 

2.5

137

262

3.0 

4.0 

5.0 

6.0 

7.0

435

875

1,410

2,110

2,930

0.7

.9

1.1

1.3

4.8

9.7

17

1.6 

2.0 

2.5 

3.0

56

117

255

435

Note. Same as pre":eding table above 3.0 ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

50

31

Total

Mean

Cf sm

In.

Oct.

176

170

167

150

98

95

458

471

403

306

225

184

163

164

998

2,420

2,240

1,260

854

623

495

407

343

310

303

287

271

250

259 

245

605

15,400

497

5.95

6.86

Nov.

695

538

395

454

1,070

995

695

511

407

346

479

487

435

471

495

483

467

388

336

306

284

268

242

235

230

220

210

205

195

1S38_

12,730

424

5.08

5.67

Dec.

179

172

165

181

250

222

 *191

166

155

121

125

154

116

100

130

112

69

86

112

b90

b70

b60

b55

53

77

82

bl20

b75

b65 

bSO

bSO

3,643

118

1.41

1.63

Jan.

b20

b75

blOO

81

73

91

b55

b57

406

672

610

495

455

388

319

281

242

198

*196

186

167

156

167

b!30

155

bl25

bllO

104

b!07

177 

237

6,635

214

2.56

2.95

Feb.

200

227

353

290

262

225

350

384

350

333

329

592 592-

443

353

316

265

256

296

296

259

204

183

190

159

287

259

250

212

8,715

301

3.60

3.88

Mar.

189

195

268

323

319

278

407

592

569

435

350

319

293

310

370

357

278

271

253

248

245

250

271

300

274

265

262

265

274

336 

381

9,747

314

3.76

4.34

Apr.

388

447

*636

695

740

740

628

646

618

636

695

641

538

447

388

565

852

695

487

388

342

300

280

262

243

225

225

216

222

311

14,496

483

5.78

6.45

May

272

231

210

231

228

192

204

210

180

195

210

189

138

194

124

123

146

124

84

104

154

110

104

119

108

56

120

256

196 

78

160

5,050

163

1.95

2.25

June

130

48

205

388

290

174

174

160

se

59

153

58

77

72

86

52

13

83

49

56

54

51

13

7.0

86

46

38

47

44 

12

2,813.0

93.8

1.12

1.25

July

20

121

43

30 8.4'

110

17

54

75

144

53

53

68

27

72

111

63

*43

40

56

13

9.6

92

48

49

41

39

38

*13 

31

43

1,625.0

52.4

0.628

0.72

Aug.

36

28

27

11

7.0

28

30

23

' 1819

6.8

8.6

44

29

34

23

20

6.3

5.7

18

18

25

30

24

8.2

6.1

24

26

23 

24

12

642.7

20.7

0.248

0.29

Sept.

5.9

5.2

575

18

15

19

48

17

5.9

23

29

19

14

40

18

8.1

36

44

45

24

26

9.5

9.4

66

49

39

23

40

12 

13

726.5

24.2

0.290

0.32

Calendar year 1955: Max 2,420 Min 4.7 Mean 225 Cfsm 2 . 6S In. 36.67

Water year 1955-56: Max 2,420 Mln 5.2 Mean 225 Cfsm 2.69 In. 36.61

Peak discharge (base,- BOO cfs).--Oct. 16 (6 p.m.) 2,930 cfs (7.00 ft); Nov. 5 (7:30 

(3.98 ft); Apr. 17 (7 a.m.) 898 cfs (4.06 ft). 

* Discharge measurement made on this day.

n.) 875 cfs
THAMES RIVER BASIN 151

Qulnebaug River at Jewett City, Conn.

Location. Lat 41°35'52", long 71°59'05", on left bank In rear of high school on Slater 

Avenue at Jewett City, New London County, 570 ft downstream from outlet of canal from 

Flsk Mills, Inc., at mouth of Pauchaug River, 1,000 ft downstream from railroad bridge, 

and at mile 6.1.

Drainage area. 711 sq ml.

Records available. July 1918 to September 1956.

Gage.--Water-stage recorder. Datum of gage Is 63.07 ft above mean sea level, datum of 

1929.

Average discharge. 38 years, 1,257 cfs.

Extremes. Maximum discharge during year, 12,700 cfs Oct. 17 (gage height, 16.*5 ft); minimum, 24 cfs Aug. 10 (gage height, 3.55 ft); minimum dally, 28 cfs Aug. 18.

1918-56: Maximum discharge, 40,700 cfs Aug. 20, 1955 (gage height, 29.0 ft, from 

floodmarks), from rating curve extended above 11,000 cfs by computation of peak flows 

over three nearby dams at gage heights 21.7, 22.5, 24.0 and 29.0 ft; minimum dally, 

18 cfs Aug. 28, Dec. 11, 1949.

Remarks.--Records excellent except those for period of no gage-height record, which are 

good. Flow regulated by many ponds and reservoirs above station , the largest of which 

are Lake Chaubunagungamaug and Pauchaug Pond. Records of chemical analyses and water 

temperature for the water year 1956 are given In WSP 1450.

Revisions (water years) . WSP 781: Drainage area. WSP 1301: 1919-26(M) .

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Nov. 5 Nov. 6 to Sept. 30

5.4

6.0

8.0

12.0

17.0

540

860

2,200

6,330

13,600

123

220

350

6.0 790

8.0 2,130

10.0 4,060

14.0 8,900

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

23

29

30

31

Total

Mean

Cfsm

In.

Oct.

1,170 

1,170

1,160

956

844

560

2,020

2,620

2,420

2,210

1,830

1,610

1,420

1,360

3,280

8,650

12.500

10 400

7*780

5,840

4,610

3,730

3,230

2,970

2,840

2,730

2,530

2,350

2,040

2,020

3,000

101,650

3,280

t.61

5.32

Nov.

3,860 

3,460

2,970

2,880

6,660

8,080

6,570

5,160

4,060

3,460

3,660

4,060

3,760

3,760

4,060

3,760

3,760

3,360

2,860

2,670

2,580

2,310

*2,130

2,130

2,130

2,010

1,890

1,850

*1,770

JL.620

103,290

3,443

4.84

5.40

Dec.

1,540 

1,440

1,370

1,510

1.850

1,810

1,650

al,540

81,400

al,300

al,240

al,180

al,120

al,060

al.OOO

a940

690

740

890

765

690

690

559

355

590

640

715

640

615

640

287

31,456

1,015

1.43

1.65

Jan.

448 

472

665

690

690

561

261

460

1,420

4,040

4,060

3,360

3,060

2,670

2,310

2,130

1,930

1,620

1,480

1,440

1,270

1,210

1,240

1,060

1,090

1,030

1,030

940

915

1,150

1,480

46,182

1,490

2.10

2.42

Feb.

1,370 

1,370

1,930

1,650

1,510

*1,510

1,930

2,310

2,090

1,890

1,810

2,860

5.160

2,670

2,310

2,130

1,930

1,850

1,930

1,970

1,730

1,480

1,370

1.210

1,300

2,050

2,220

2,130

1,890

55,560

1,916

2.69

2.90

Calendar year 1955: Max 35,300 Min 42

Mar.

*1,650 

1,540

1,730

2,090

2,580

2,400

2,670

3,760

5,660

3,260

2,860

2,670

2,490

2,400

2,580

2,580

2,010

1,970

2,050

1,810

1,970

1,930

2,010

2,220

2,050

2,090

2,010

1,970

2,010

2,050

2,220

71,490

2,306

3.24

3.74

Apr.

2,220 

2,490

*3,160

3,560

3,960

5,270

5,490

5,730

5,050

4,720

5,050

5,050

4,940

4,720

4,610

5,160

7,050

7,170

5,850

4,720

4,060

5,560

3,260

3,060

2,860

2,670

2,490

2,310

2,400

2,760

125,400

4,180

5.88

6.56

May

2.860 

2,580

2,310

2,220

2,130

2,010

£,010

1,850

1,650

1,620

1,620

1,540

1,510

1,440

1,340

1,270

1,120

1,120

1,090

1,000

1,150

1,060

890

1,060

1,000

840

915

1,340

1,240

1,000

1,000

45,785

1,477

2.08

2.40

June

1,120 

1,090

1,670

5.460

5,060

2,310

1,730

1,400

1,150

970

1,060

940

790

740

665

590

545

590

557

513

494

399

413

"516 357

551

495

466

428

392

29,461

982

1.38

1.54

July

529 

350

185

184

52T

640

690

640

665

740

690

590

522

615

690

665

567

511

*451

326

402

420

553

508

448

460

286

385

*329

430 

376

14,968

483

0.679

0.78

Aug.

305 

331

73

166

220

380

335

290

274

59

31

129

365

328

334

328

34

28

34

265

250

252

216

136

72

162

295

243

242

2*3

165

6,585

212

0.298

0.34.

Sept.

*31

103

165

299

269

242

250

56

214

311

253

334

305

36

100

203

394

297

264

367

96

152

229

401

35"

415

380

359

434

452

7,761

259

0.364

0.41

Mean 1,873 Cfsm 2.63 In. 35.73

Water year 1955-56: Max 12,300 Min 28 Mean 1,748 Cfsm 2.46 In. 33.46

Peak discharge (base. 4.500 cfs). Oct. 17 (10 a.m.) 12,700 cfs (16.45 ft); Nov. 6 (2 a.m.) 8,620 

cfs (13.79 ft); Jan. 10 (3:30 p.m.) 4.940 cfs (10.81 ft); Apr. 8 (9 a.m.) 5,970 cfs (11.63 ft)j 

Apr. 17 (11 p.m.) 7,560 cfs (13.03 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records of tributary 

streams.
152 THAMES RIVER BASIN

Yantic River at Yantlc, Conn.

Location. Lat 41 "33 '31", long 72 "07 '19", on left bank at Yantlc, New London County,

700 ft downstream from stone-arch highway bridge, 1 mile downstream from Susquetensout 

Brook, and 4.8 miles upstream from mouth.

Drainage area . 88.6 sq ml.

Records available. October 1930 to September 1956.

~Gage. Water-stage recorder. Datum of gage is 94.46 ft above mean sea level, datum of 

Average discharge. 26 years, 162 cfs.

Extremes.--Maximum discharge during year, 6,760 cfs Oct. 16 (gage height, 11.58 ft); minimum, 7.6 cfs Sept. 5 (gage height, 0.84 ft); minimum daily, 7.8 cfs Sept. 5.

1930-56: Maximum discharge, 13,500 cfs Sept. 21, 1938 (gage height, 14.66 ft, from 

floodmark), by computation of flow over 2 dams 2j miles upstream and 3 miles downstream 

from station, respectively; minimum, 2.3 c-fs sometime during period July 21 to Aug. 11, 

1949; minimum gage height, 0.41 ft Oct. 13, 1930; minimum dally discharge, 3.3 cfs 

Oct. 13, 1930.

Remarks. Records excellent except those for periods of ice effect, which are good. Low 

flow completely regulated by mills upstream

Revisions (water years).--WSP 781: Drainage area. WSP 1051: 1931-36. WSP 1301: 

1934(M).

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 17 to Sept. 30

1.9 

2.5 

3.0 

5.0

82

160

245

740

7.0

9.0

10.7

1,600

3,130

5,280

0.8 

1.0 

1.2 

1.6

6.8

13

22

47

2.C

3.C

4.C

5.C

84

225

445

740

Note. Same as preceding table above 5.C ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

1 9 ii*

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfstn

In.

Oct.

180

162

127

103

ii

129

691

575

392

274

212

175

154

162

1,820

5.250

*2,840

1,410

1,000

770

581

455

385

345

352

323

287

259

239

293

931

20,967

676

7.63

8.80

Nov.

738

458

345

670

2,250

1,180

680

500

408

358

575

560

432

530

560

530

575

432

358

325

307

291

271

303

277

241

217

205

198

172

14,946

498

5.62

6.27

Dec.

176

*178

190

231

295

261

204

180

164

158

146

142

132

124

126

137

131

114

105

95

85

80

75

70

75

70

62

57

51

49

ST

4,016

130

1.47

1.70

Jan.

47

42

47

57

60

58

54

55

200

358

*291

293

319

269

205

186

160

142

142

131

122

106

106

99

98

93

88

83

82

120

215

4,328

150

1.69

1.95

Feb.

192

205

335

275

229

200

388

432

*358

297

336

560" 725

382

325

299

245

295

370

358

285

202

175

146

254

275

237

229

193

8,752

302

3.41

3.68

Mar.

169

T57

253

277

261

247

425

665

5§S

420

345

319

297

325

420

382

281

283

257

247

237

247

279

325

309

289

287

295

299

335

345

9,897

319

3.60

4.15

Apr.

382

458

*680 333"

575

500

420

515

515

485

445

370

311

273

259

462

605

420

321

271

241

217

202

204

187

178

184

174 19"0

277

10,956

365

4.12

4.60

May

261

205

269

261

239

205

267

243

198

193

190

172

163

148

135

128

124

118

122

122

114

103

94

99

84

81

107

163

124

103

87

4,922

159

1.79

2.06

June

82

86

445

530

313

198

150

119

97

98

114

108

82

69

58

52

55

48

39

34

32

38

36

28

31

32

59

46

' 41

34

3,154

105

1.19

1.33

July

23

24

16

14

38

181

14T

80

97

103

65

45

41

105

110

68

51

41

*28

29

54

142

108

80

60

51

46

44

37

34

66

2,023

65.3

0.737

0.85

Aug.

35

*68

BT

11

10

11

13

13

13

13

12

11

11

11

11

10

10

10

10

14

90

33

50

48

11

10

67

42

44

57

9.6

809.6

26.1

0.295

0.34

Sept.

*8.2

8.2

8.2

8.0

7^8

8.2

11

11

11

68

56

53

52

29

9.6

14

61

60

46

47

49

24

34

37

39

36

33

123 Tie

66

1,134.2

37.8

0.427

0.48

Calendar year 1955: Max 5,250 Min 10 Mean 234 Cfsm 2.64 In. 35.85

Water year 1955-56: Max 5,250 Min 7.8 Mean 235 Cfsm 2.65 In. 36.21

.base. 1,000 cfs).--Oct. 16 (11:30 a.m.) 6,760 cfs (11.58 ft); Oct. 31 (2 p.m.) 

1,050 cfs (5.82 ft); Nov. 5 (6:30 a.m.) 2,560 cfs (8.45 ft). 

* Discharge measurement made on this day. 

Note. Stage-discharge relation affected by ice Dec. 20-27, Jan. 19, 21-29.
CONNECTICUT RIVER BASIN 153

Connecticut River at First Connecticut Lake, near Pittsburg, N. H.

Location. Lat 45 "05'15", long 71 C 17'35", on right bank a quarter of a mile downstream 

from (3am at First Connecticut Lake and 6 miles northeast of Pittsburg, Coos County.

Drainage area.--83.0 sq mi.

Records available. April 1917 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 1,560 ft (from topographic map). Prior 

to Jan. 1, 1918, discharge computed from flow through gates at dam a quarter of a mile 

upstream. Jan. 1 to July 28, 1918, staff gage at present site and' datum.

Average discharge. 39 years, 195 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 563 cfs Mar. 1 (gage height, 3.13 ft); minimum

- daily, 8.7 cfs Apr. 6-26.

1917-56: Maximum discharge, 7,200* cfs June 16, 1943 (gage height, 6.25 ft), from 

rating curve extended above 1,900 cfs on basis of computation of flow over dq.m at gage 

height 6.12 ft; maximum gage height, 6.35 ft May 5, 1925 (backwater from logging operations); minimum daily discharge, 3.1 cfs Mar. 17, 18, 1929.

Remarks. Records good except those below 20 cfs, which are fair. Flow regulated by First 

Connecticut and Second Connecticut Lakes (see p. 230).

Rev islons (water y 

23(M) , 1925-26.

years) . WSF 756: Drainage area. WSP 1001: 1931-39. WSP 1231: 1921-

Ratlng tables, water year 1955-56 (gage height, in feet, and 

discharge, In cubic feet per second)

1.4

1.5 

1.7 

£.0

Oct. 1 to Mar. 1

L 2.5 

3.0 

3.5

Mar. 2 to Sept. 30

221

440

830

1.4

1.5

1.7 

2.0

2.2 

2.5

3.0

142

240

480

830

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

148

148

148

*215

242

242

242

238

238

238

238

242

242

134

17

17

17

17

17

120

242

242

242

238

238

238

238

235

242 

238

93

5,646

182

-162

Nov.

l£

16

87

170

17

17

17

17

17

17

17

17

17

17

17

17

17

140

382

377

403

500

494

494

488

494

494

488

482

48*:

6,228

208

-75.9

Dec.

404

24TT

246

246

246

246

246

246

246

246

*246

246

242

242

258

238

238

238

238

238

238

238

242

242

238

238

238

238

238 

238

238

7,648

247

-214

Jan.

238

238

238

238

238

238

238

238

242

109

14

14

14

14

14

103

246

246

246

246

246

242

242

246

246

246

246

293

598

398

598

6,615

213

-141

Feb.

598

598

598

398

405

598

403

176

55

55

55

55

55

55

55

55

55

55

55

55

55

55

55

55

55

55

55

55

55

4,127

142

-105

Mar.

190

547

540

554

528

540

540

540

540

554

528

522

554

554

534

534

510

462

405

558

502

252

202

166

154

115

97

84

77

55

£7

11,465

570

-554

Apr.

47

45

45

45

52

8/7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

*8.7

8.7

8.7

8.7

8.7

8.7

9.5

11

11 

11

459.0

14.6

+297

May

11

11

12

12

12

12

12

12

12

13

13

14

14

14

14

14

14

14

14

14

14

14

14

14

*14

15

T5

15

15 

15

15

418

15.5

+ 853

June

16

16

16

16

17

18

T7

16

17

17

17

17

17

17

17

17

17

17

17

17

17

17

17

17

17

17

17

*17

18

18

508

16.9

+ 181

July

20

20

18

18

18

18

18

18

64

296

151

98

53

144

222

229

268

268

268

268

268

268

268

268

268

268

268

268

268

£68

£68

5,425

175

-60.7

Aug.

264

264

250

157

157

157

157

157

157

157

157

157

157

157

*157

157

157

157

157

157

157

157

157

160

160

160

157

157

157 

154

87

5,090

164

-97.9

Sept.

16

16

16

16

16

16

17

74

165

163

165

163

*163

165

165

163

163

163

163

165

84

16

72

163

165

165

165

165

163

160

3,455

115

+5.45

Adjusted for change in reservoir contents

Mean 

Cfsm

19.9 

0.240 

0.28

152 

1.59 

1.77

Calendar year 1955 : 

Water year 1955-56 :

53.1 

0.399 

0.46

72.1 

0.869 

1.00

59.4 

0.475 

0.51

15.5 

0.187 

0.22

512 

5.76 

4.19

867 

10.4 

12.04

Observed

Max 722 Mln 8.4 Mean 184 

Max 547 Min 8.7 Mean 156

198 

2.39 

2.66

114 

1.57 

1.59

66.3 

0.799 

0.92

119 

1.43 

1.59

Adjusted

Mean 

Mean

161 Cfsm 1.94 In. 26.59 

166 Cfsm 2.00 In. 27.23

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, In First Connecticut and Second Connecticut Lakes.

Note. Discharge for periods Dec. 28 to Jan. 8, May 15-25 computed from once-daily tape-gage 

readings and records of gate operation at First Connecticut Lake.
CONNECTICUT RIVER BASIN

Connecticut River at North Stratford, N. H.

Location. Lat 44 "44'55", long 71 C 37'55", on left bank at North Stratford, Coos County, 

400 ft downstream from Nulhegan River.

Drainage area. 799 sq mi.

Records available.--August 1930 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 880.17 ft above mean sea level, datum of 

1929.

Average discharge. 26 years, 1,562 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 10,600 cfs May 1 (gage height, 8.99 ft); minimum daily, 159 cfs Oct. 20.

1930-56: Maximum discharge, 23,700 cfs June. 16, 1943 (gage height, 14.67 ft), from 

rating curve extended above 15,000 cfs; maximum gage height, 16.66 ft Mar. 13, 1936 

(ice Jam); minimum daily discharge, 112 cfs Aug. 28, 1948.

Remarks. Records excellent except those for period of ice effect, which are fair. Plow 

regulated by powerplants and by First Connecticut and Second Connecticut Lakes and 

Lake Francis (see p. 230).

Revisions (water years) . WSP 781: 1934(M) . WSP 891: Drainage area.

Rating table, water year 1955-56, except period of ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

Z.8 

3.1 

3.5 

4.0

136

242

467

910

5.0 

7.0 

9.0

2,270

5,850

10,600

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

(t)

Oct.

604

612

604

588

580

588

*620

665

656

629

629

629

620

612

449

161

164

167

199

159

420

780

710

692

880

830

780

750

730 

720

1 040

18,267

589

-331

Nov.

1,070 

1,010

720

780

987

1,240

*1,530

1,490

1,280

998

810

790

790

750

910

900

900

954

1,230

1,360

1,260

1,410

1,370

1,730

1,840

1,640

1,530

1,450

1,440

1,400

35,569

1,186

-133

Dec.

1,410 

1,120

950

840

880

*800

800

800

800

800

800

800

790

790

790

790

780

780

770

760

720

670

600

640

720

740

710

660

620 

680

680

24,490

790

-413

Jan.

620 

580

647J

680

700

720

720

770

1,100

2,100

2,700

2,600

2,300

2,000

1,750

1,600

1,550

1,400

1,250

1,150

1,100

1,080

1,060

1,040

1,020

1,000

980

940

1,050

1,200

1,200

38,600

1,245

-277

Feb.

1,150 

1,150

1,150

1,150

1,150

1,150

1,150

1,150

920

880

860

860

860

860

860

840

800

800

800

800

800

800

800

800

840

860

880

870

860

26,850

926

-486

Mar.

800 

820

1,100

1,200

1,500

1,250

1,200

1,250

1,300

1,000

900

960

920

920

920

900

850

800

760

720

720

660

580

540

520

480

440

390

380 

400

360

25,340

817

-458

Apr.

350 

360

380

520

1,200

2,500

2,900

3,200

2,620

2,020

1,630

1,880

2,430

2,610

2,080

2,430

3,940

4,600

3,670

2,750

*2,370

2,240

1,960

1,670

1,490

1,540

1,920

4,680

7,200

9,100

78,240

2,608

+690

May

8,700 

5,910

6,050

6,250

5,530

5,470

4,940

3,980

3,230

4,090

4,630

4,230

6,590

7,520

6,610

4,560

3,960

2,850

2,290

2,270

1,960

1,720

1,980

1,820

1,400

*1.190

1,830

3,580

2,750

1, 980

2,570

122,440

3,950

+1,566

June

5,140 

2,350

,940

,940

,820

,730

,340

,100

,230

,200

1,130

998

800

656

612

556

482

454

408

571

377

496

414

389

548

770

548

*504

482

540

29,325

978

+310

July

548 

910

1,240

810

556

460

467

511

672

1.860

1,090

780

638

701

921

710

740

810

750

720

692

665

638

 74

760

720

674

638

629

638

638

23,260

750

-48.8

Aug.

629 

620

612

460

482

489

427

434

460

504

900

820

612

533

504

*474

460

460

620

580

504

467

460

467

540

525

540

548

720

860

932

17,643

569

-216

Sept.

900 

629

1,200

1,090

683

504

414

341

ra

540

525

533

*556

518

525

525

564

800

840

. 998

1,640

1,030

720

790

1,180

1,080

900

683

710

674

22,506

750

-29.7

Adjusted for change in reservoir contents

Mean 

Cf sm 

In.

258 

0.323 

0.37

1,053 

1.32 

1.47

Calendar year 1955 : 

Water year 1955-66;

377 

0.472 

0.54

968 

1.21 

1.40

440 

0.551 

0.59

359 

0.449 

0.52

3,298 

4.13 

4.61

5,516 

6.90 

7.96

Observed

Max 16,200 Min 114 Mean 1,417 

Max 9,100 Min 159 Mean 1,264

1,288 

1.61 

1.80

702 

0.879 

1.01

354

0.443 

0.51

721

0.902 

1.01

Adjusted

Mean 1,365 Cfsm 1.71 In. 23.18 

Mean 1,279 Cfsm 1.60 In. 21.79

Peak discharge (base. 10,000 cfs). May 1 (2 a.m.) 10,600 efs (8.99 ft). 

* Discharge measurement made on this day. 

t Change in contents, equivalent in cubic feet per second, in First Connecticut and Second Connecticut Lakes and Lake Francis.

Note. Stage-discharge relation affected by ice Dec. 3 to Apr. 8.
CONNECTICUT RIVER BASIN 155

Upper Ammonoosuc River near Groveton, N. H.

Location. Lat 44 0 37'30", long 71°28'10", on left bank 75 ft upstream from highway bridge, 

0.2 mile downstream from Nash Stream, and 2§ miles northeast of Groveton, Coos County.

Drainage area. 232 sq mi.

Records a vail able. August 1940 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 920 ft (from topographic map).

Average discharge.--16 years, 481 cfs (adjusted for diversion).

Extremes. Maximum discharge during year. 3,800 cfs Apr. 30, May 1 (.gage height, 6.77 ft); 

maximum gage height, 7.69 ft Jan. 11 (ice Jam); minimum discharge, 68 cfs Oct. 3.

1940-56: Maximum discharge, 9,950 cfs Mar. 27, 1953 (gage height, 9.44 ft), from 

rating curve extended above 5,800 cfs by logarithmic plotting; minimum, 32 cfs 

Sept. 14, 1948.

Flood in March 1936 reached a stage of about 10.6 ft, from information by local 

residents.

Remarks.--Records excellent except those for period of ice effect, which are fair. Some 

regulation by pond on Nash Stream. Small diversion above station for municipal supply 

of Berlin.

Rating tables, water year 1955-56, except period of Ice effect (gage 

height. In feet, and discharge, In cubic feet per second)

Oct. 1 to Apr. 30 May 1 to Sept. 30

2.7 55

3.0 132

3.5 325

4.0 600

4.5 950

5.0 1,400

6.0 2,580

7.0 4,250

2.7 57

3.0 140

3.5 345

4.0 645

5.0 1,480

6.0 2,610

7.0 4,250

Discharge, In cubic feet per second, water year October 1955 to September 1S56

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

92

81

74

*84

84

79

97

145

148

126

99

89

76

74

86

132

152

235

190

145

148

220

182

152

289

289

216

176

162

162

290

4,574

148

2.57

Nov.

730

758

588

474

800

852

*652

564

486

410

360

325

316

307

340

302

480

522

385

310

280

240

220

300

290

230

220

200

180

170

12,291

410

2.49

Dec.

160

150

155

160

170

170

155

145

140

135

135

130

130

130

130

130

130

125

125

120

115

105

100

105

115

120

120

110

105

110

110

4,040

130

2.78

Jan.

105

92

92

98

98

98

94

90

140

700

1.700

1,550

*1,260

1,030

840

580

490

390

320

300

290

280

265

245

230

220

205

200

190

185

180

12,557

405

2.76

Feb.

175

170

165

160

155

155

160

165

170

165

160

155

155

155

155

155

150

155

160

155

150

145

145

140

140

160

175

175

170

4,595

158

2.70

Mar.

160

150

150

145

145

145

140

140

140

140

150

160

170

160

*150

145

T45

140

135

135

135

135

145

150

140

135

135

130

T2~5~ 125

125

4,425

143

2.78

Apr.

125

130

145

260

500

1,000

1,100

1,030

900

750

680

720

820

880

760

740

1,150

1,280

1,110

928

882

*905

800

691

606

646

717

1,550

2,620

3,49O

27,915

930

2.80

May

5,350

2,520

2,480

2,660

2,470

2,410

2,380

2,090

1,720

1,960

2,220

2,080

2,820

3,130

2,560

2,180

2,090

1,570

1,190

1,220

1,090

980

1,240

1,040

852

*680

1,270

2,340

1,820

1,200

1,360

58,972

1,902

2.82

June

1,330

1,070

852

948

757

736

575

498

504

510

474

417

365

325

290

264

242

218

199

192

188

196

185

188

238

222

199

250

222

*230

12,884

429

2.97

July

210

338

400

264

199

174

199

230

263

582

412

272

226

382

750

498

345

272

222

188

171

157

167

225

268

206

167

143

127

TO1Q8

8,283

267

2.74

A'Jg.

105

102

97

91

88

83

86

80

83

111

154

140

105

88

*83

78

78

80

154

150

108

91

80

88

100

100

102

118

140

167

551

3,681

119

2.66

Sept.

680

474

808

492

320

242

242

226

188

164

150

143

134

127

*140

137

181

264

230

282

428

310

246

314

510

385

295

250

210

203

8,775

292

2.74

Adjusted for diversion

Mean 

Cfsm 

In.

150 

0.647 

0.75

412 

1.78 

1.98

Calendar year 1955 : 

Water year 1955-56:

133 

0.573 

0.66

408

1.76 

2.03

161 

0.694 

0.75

146 

0.629 

0.72

933 

4.02 

4.49

1,905 

8.21 

9.47

Observed

Max 5,440 Mln 72 Mean 467 

Max 3,490 Mln 74 Mean 445

432 

1.86 

2.08

270 121 

1.16 0.522 

1.34 0.60

295 

1.27 

1.42

Adjusted

Mean 470 Cfsm 2.03 In. 27.48 

Mean 448 Cfsm 1.93 In. 26.29

Peak discharge (base. 2.900 cfs).--12 p.m. Apr. 30 to 2 a.m. May 1, 3,800 cfs (6.77 ft); May 13 

(10:30 to 12 p.m.) 3,270 cfs (6.47 ft).

* Discharge measurement made on this day.

T Diversion, equivalent In cubic feet per second, for municipal supply of Berlin. Records furnished by city of Berlin.

Note. Stage-discharge relation affected by Ice Nov. 20 to Apr. 17.
CONNECTICUT RIVER BASIN

Connecticut River near Dalton, N. H.

Location. Lat 44°24'35", long 71°43'00", on left bank 250 ft upstream from highway

bridge, 1,200 ft downstream from dam of Oilman Paper Co., and l£ miles downstream from 

Dalton, Coos County.

Drainage area. 1,514 sq mi.

Records available. March 1927 to September 1956. Published as "at Water'ord, Vt." 

1927-35. Records published for both sites January to September 1935.

Gage. Water-stage recorder. Datum of gage Is 799.89 ft above mean sea level, datum of 

1929. Prior to Sept. 30, 1935, chain gage at bridge 10^ miles downstream at mean sea 

level. Jan. 1, 1935, to June 29, 1937, chain gage at bridge 250 ft do'mstream at 

present datum.

Average discharge. 29 years, 2,902 cfr (ad'usted to drainage area at present site and 

for storage).

Extremes.--Maximum discharge during year, 18,000 cfs May 1 (gage height, 17.11 ft); minimum daily, 508 cfs Oct. 2.

1927-56: Maximum discharge, 48,300 cfs Mar. 20, 1936 (gage height, 25.6 ft); minimum daily, 115 cfs Oct. 3, 1937.

Remarks. Records good except those for periods of ice effect or backwater from Moore 

Reservoir, which are fair. Plow regulated by powerplants and by First Connecticut 

and Second Connecticut Lakes, Lake Francis (see p. 230), and other reservoirs. These 

reservoirs have a combined usable capacity of about 8 1/3 billion cubic feet.

Revisions (water years).--WSP 891: Drainage area. WSP 1231: 1935. WSP 1301: 1928- 

35(M).

Rating table, water year 1955-56, except periods of Ice effect or backwater 

from Moore Reservoir (gage height, In feet, and discharge, In cubic feet 

per second)

10.0

12.0

440

1,190

3,230

6,300

14.0

16.0

18.0

10,300

15,100

20,500

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

1819*

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

974

508

635

1,070

806

782

990

1,090

736

870

1,180

1,030

846

854

942

773

553

640

584

577

584

878

777

886

1,400

1 , 530

1,540

1,530

1,350

762

1,170

28,847

931

-331

Nov.

2,260

2,630

*2,500

2,160

2,330

2,530

2.980

2,930

2,760

2 , 540

2,390

1,930

1,260

1 56O

2^050

1,740

1,650

1,920

2,070

2,080

2,010

1,910

2,190

2,320

2,610

2,550

2 , 200

2,400

2,190

1,830

66,480

2,216

-133

Dec.

1 , 700

1,750

1,520

1,220

1,360

1,270

1,250

1,350

1,240

1,230

1,220

1,170

1,170

1,200

1,200

1,170

1,170

1,170

1,130

1,130

1 , 100

840

860

660

600

520

860

1,350

1,300

820

900

35,410

1,142

-413

Jan.

590

590

1,050

1,050

950

900

920

950

1 , 300

3,700

6,200

5,860

5,410

*4,540

3,770

5,220

2,860

2,580

2,370

2,090

1,890

1,880

1,800

1,790

1,680

1,630

1,580

1,450

1,430

1,450

1,720

69,200

2,232

-277

Feb.

1.720

1,630

1,590

1,600

1,600

1,590

1,620

1,610

1,570

1,36O

*1,190

1,320

1,280

1,260

1,450

1,470

1,190

1,170

1,170

1,150

1,150

1,150

1,150

1,150

1,150

1.050

1,070

1,340

1,320

39,070

1,347

-486

Mar.

1,200

1,160

1,160

1,320

1.6OO

1,600

1,600

1,600

1,600

1,550

1,350

1,360

1,260

1,260

1,260

1,320

1,250

1,100

1,200

1,200

1,150

1,050

1,000

980

970

800

860

740

680

720

700

36,600

1,181

-458

Apr.

570

720

740

1,050

2,100

5,j.80

7,050

7,470

6,880

5,580

4,430

4,550

3,930

6,550

5,990

5,600

8,530

*10,500

9,480

7,540

6,250

5,680

5,250

4,600

4,010

3,840

3,980

6,280

12,200

16,500

172,830

5,761

+690

Hay

17.900

16,700

13,700

13,000

13,100

12,300

11,500

10,300

8,410

7,790

9,170

9,190

10,200

12,900

15,600

12,200

1O.2OO

8,350

6,250

5,500

*5,090

4,520

4,370

4,950

4,340

5,610

4,090

8,960

8,87O

6,620

5,600

283,280

9,138

+1,566

June

6.590

6,160

5.130

4,920

4,810

4,540

5,830

3,080

2,730

2,970

2,710

2,330

2,050

1,710

1,380

1,270

788

837

1,010

879

895

882

983

954

8O4

1,220

1,230

1,120

1,190

*1,260

69,862

2,329

+510

July

1,030

950

1,610

1,780

1,510

1,310

1,240

1,060

1,250

1,640

2.400

1 , 9 tO

1,890

1 , 350

1,670

2,030

1,950

1,3?0

1,510

936

938

938

839

1,230

1,510

1,440

1,230

1,190

834

937

931

42,513

1,371

-48.8

Aug.

*930

890

889

890

718

832 '860

791

802

818

884

989

1,150

1,120

916

797

769

840

717

1,000

950

874

824

782

806

652

902

884

809

1,110

2,210

28,405

916

-216

Sept.

2,750

2,500

2,290

5.100

2,550

1,410

1,080

1,070

755

840

958

690

756

739

*918

667

945

1,440

1,310

1,530

2,580

2,790

1,810

1,590

2,070

2,280

2,090

1,720

1,560

780

47,168

1-, 572

-29.7

Adjusted for change In reservoir contents

Mean 

Cf sm 

In.

599 

0.596 

0.46

2,083 

1.38 

1.54

Calendar year 1955 : 

Water year 1955-56 :

729 

0.482 

0.55

1,955 

1.29 

1.49

862 

0.569 

0.61

723

0.478 

0.55

6,451 

4.26 

4.75

10,700 

7.07 

8.15

Observed

Max 25,600 Win 140 Mean 2,734 

Max 17,900 Win 508 Mean 2,513

2,659 

1.74 

1.94

1,323 

0.874 

1.01

701 

0.463 

0.53

1,543 

1.02 

1.14

Adjusted

Mean 2,682 Cfsm 1.77 In. 24.04 

Mean 2,528 Cfsm 1.67 In. 22.72

Peak discharge ("base, 16,500 cfs). May 1 (12:30 to 1:50 p.m.) 18,000 cfs (17.11 ft).

* Discharge measurement made on this day.

t Change In contents, equivalent In cubic feet per second, in First Connecticut and Second Connecticut Lakes and Lake Francis.

Note. Stage-discharge relation affected by ice Dec. 15 to Jan. 11, Feb. 20 to Apr. 5. Backwater 

from Moore Reservoir June 11 to Aug. 30, Sept. 2-20, 22-30.
CONNECTICUT RIVER BASIN

East Branch Passumpsic River near East Haven, Vt.-

Location. Lat 44°38'02", long 71°53'53", on right bank in Burke, Caledonia County, 

2. 1 miles south of East Haven, Essex County.

Drainage area. 53.8 sq mi.

Records available. July 1939 to October 1945, October 1948 to September 1956. Prior to 

October 1951, published as Passumpsic River near East Haven.

Gage. Water-stage recorder. Datum of gage is 945.88 ft above mean sea level, datum of 

1939 (levels by Corps of Engineers).

Average discharge. 14 years, 101 cfs.

Extremes. Maximum discharge during year, 920 cfs Apr. 30 (gage height, 4.31 ft); minimum, 

19 cfs Aug. 10.

1939-45, 1948-56: Maximum discharge, 2,180 cfs May 28, 1940 (gage height, 6.21 ft); 

minimum, 13 cfs Sept. 1-5, 1953.

Maximum stage known, about 12.6 ft sometime in November 1927, from information by 

local resident.

Remarks. Records good except those for period of ice effect, which are fair. 

Revisions. WSP 1141: Drainage area.

Rating table, water year 1955-56, except period of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

0.8

1.1 

1.5 83

2.0

3.0 

4.0

163

415

780

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

32

30

29

27

27

26

*36

48

48

37

32

30

29

27

27

28

32

36

32

31

52

61

44

40

84

58

52

49

48

46

98

1,276

41.2

0.766

0.88

Nov.

106

*96

75

73

144

159

134

129

106

89

84

85

84

83

88

75

94

84

71

66

62

58

85

81

60

56

55

53

52 

50

2,537

84.6

1.57

1.75

Dec.

49

47

50

52

5j>

52

*51

50

47

45

44

42

41

41

41

41

41

40

38

36

35

33

31

33

35

37

35

34

32 

32

31

1,272

41.0

0.762

0.88

Jan.

29

28

27

28

29

29

27

26

40

80

135

120

*150

100

85

75

67

55

51

54

60

52

48

46

43

42

41

39

37 

37

37

1,717

55.4

1.03

1.19

Feb.

37

37

37

37

38

39

39

38

36

*35

35

35

35

34

34

33

31

35

32

31

31

30

30

30

32

37

35

34

32

999

34.4

0.639

0.69

Mar.

31

32

32

31

31

31

30

30

30

30

30

30

30

*30

29

29

28

28

27

27

27

28

30

29

28

28

28

27

27 

27

27

902

29.1

0.541

0.62

Apr.

27

28

31

70

150

170

175

161

119

93

89

120

159

157

129

210

403

285

222

171

151

*139

123

115

114

130

166

460

533

J_d9_

5,629

188

3.49

3.89

May

466

430

584

538

466

475

427

350

315

489

388

400

514

436

352

325

305

238

220

208

175

*161

161

141

127

120

370

422

260 

196

247

10,306

332

6.17

7.12

June

345

242

208

201

173

159

134

122

157

139

130

114

102

94

85

77

70

64

62

J30

66

70

61

68

77

68

64

76

» 77 

87

3,452

115

2.14

2.39

July

70

101

77

61

53

59

70

77

98

154

95

75

66

93

90

78

64

56

48

44

42

40

46

64

59

45

38

37

32

31

30

1,993

64.3

1.20

1.38

Aug.

29

29

27

25

*24

23

22

21

20

34

36

29

25

24

23

22

22

22

77

45

33

29

26

49

52

45

57

63

72

60

 

1,197

38.6

0.717

0.83

Sept.

96

82

110

70

54

44

44

37

37

33

32

34

35

*33

36

38

59

79

59

155

119

87

69

98

87

68

56

49

44 

41

1,885

62.8

1.17

1.30

Calendar year 1955: Max 1,280 Min 14 Mean 97.7 Cfsm 1.82 In. 24.65

Water year 1955-56: Max 729 Min 20 Mean 90.6 Cfsm 1.68 In. 22.92

Peak discharge (base, 800 cfs). --Apr. 30 (3:30 a.m.) 920 cfs (4.31 ft).

* Discharge measurement made on this day.

Note. --Stage-discharge relation affected by ice Nov. 21 to Apr. 7.
CONNECTICUT RIVER BASIN

Moose River at Victory, Vt.

Location. Lat 44°30'40", long 71°50'15", on right bank at Victory, Essex County, 2.7 miles 

upstream from highway bridge.

Drainage area. 75.2 sq mi.

Records available. January 1947 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 1,103.99 ft above mean sea level, datum of 

1029 (levels by Corps of Engineers).

Average discharge. 9 years, 142 cfs.

Extremes. Maximum discharge during year, 1,710 cfs Apr. 30 (gage height, 8.94 ft); minimum, 8.1 cfs Aug. 10.

1947-56: Maximum discharge, 2,940 cfs Apr. 21, 1950 (gage height, 10.89 ft), from 

rating curve extended above 1,600 cfs by logarithmic plotting; minimum, 3.7 cfs

Sept. 16, 17, 1948.

Remarks. Records good except those for periods of ice effect, which are fair. 

Revisions. WSP 1381: Drainage area.

Rating table, water year 1955-56, except periods of Ice effect (gage 

height, in feet, and discharge, In cubic feet per second)

4.0 32

4.5 

5.0 

6.0 

7.0 

9.0

150

225

443

765

1,750

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf sm

Oct.

15 

15

14

13

12

12

*26

42

44

32

23

20

17

15

15

18

19

22

22

20

23

53

36

29

75

62

48

43

44

48

122

999

32.2

0.428

0.49

Nov.

188 

146

*98

79

206

255

T§4

156

132

101

88

87

88

90

120

95

147

144

102

81

68

66

52

78

77

60

55

50

49

46

3,188

106

1.41

1.58

Dec.

42 

36

39

40

42

4| *3l

35

34

33

33

32

32

32

32

32

32

31

30

30

28

26

ISTf

29

31

29

27

26

27

26

999

32.2

0.428

0.49

Jan.

25 

23

23

22

22

21

21

22

32

240

342

277

353

306

203

151

124

97

80

71

71

67

61

57

55

51

48

46

45

43

42

3,041

98.1

1.30

1.50

Feb.

41 

41

40

40

38

38

38

40

*39

38

37

36

36

36

36

36

36

36

36

35

35

34

33

32

32

36

42

40

39

1,076

37.1

0.493

0.53

Calendar year 1955: Max 2,120 Min 4.8

Mar.

37 

36

35

34

34

33

33

33

33

33

34

34

33

*33

33

33

33

32

32

32

32

32

34

35

33

32

32

31

30

30

30

1,021

32.9

0.438

0.50

Apr.

1

3S

70

235

375

420

417

339

246

190

225

310

358

287

298

*611

744

563

388

313

281

248

211

188

225

234

508

1,060

1,530

10,968

366

4.87

5.42

May

Hfl904

1,080

926

858

841

712

539

575

706

608

724

962

748

560

512

371

281

300

230

*197

198

170

140

123

599

982

660

351

311

17,984

580

7.71

8.89

June

315 

250

253

351

335

250

183

146

169

160

154

121

97

81

70

59

49

41

35

31

36

53

40

42

56

55

42

70

*52

67

3,665

122

1.62

1.81

July

49

68

73

43

30

28

45

54

64

102

60

40

35

91

104

83

52

37

28

22

20

18

22

57

62

43

28

21

18

16

1§

1,428

46.1

0.613

0.71

Aug.

14

13

13

12

*11

10

9.8

9.3

8.6

9.5

14

14

11

9.8

9.0

8.8

8.6

11

66

54

26

19

15

16

42

26

31

33

37

41

p-zc

AP,v

837.4

27.0

0.359

0.41

Sept.

262 

126

186

110

64

45

45

42

34

29

15

28

29

26

37

38

83

103

74

146

324

155

101

155

232

145

98

76

64

55

2,937

97.9

1.30

1.45

Mean 132 cfsm 1.76 m. 23.78

Water ter year year 1955-56: 1955-56: Max Max 1,530 1,530_____Mln Mln 8.6 8.6_____Mean Mean 132 15^_____Cfsm Cfsm 1.76 1.'b in. In. 23.78 23.78_________

Peak discharge (base, 1,000 efs). Apr. 30 (5:30 to 5:30 p.m.) 1,710 efs (8.94 ft); May 4 (10 to 

~-:30 a.m.) 1,130 cfs (7.83 ft); May 14 (4:30 to 6 a.m.) 1,060 cfs (7.68 ft); May 28 (11 a.m. to 

1 p.m.) 1,130 cfs (7.83 ft).

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Nov. 23, 25, 26, 29, Dec. 2, 7, 9, Dec. 16 to 

Jan. 10, Jan. 28, 29, Jan. 31 to Feb. 2, Feb. 4, 17, Feb. 22 to Apr. 7, Apr. 11-13.
CONNECTICUT RIVER BASIN 159

Moose River at St. Johnsbury, Vt.

Location. Lat 44°25'20", long 72°00'05", on left bank at St. Johnsbury, Caledonia County, 

half a mile upstream from mouth.

Drainage area. 128 sq mi.

Records available. August 1928 to September 1956.

Gage. Water-state recorder. Altitude of gage is 585 ft (from topographic map). Prior to 

Nov. 16, 1934, chain gag'e at site a quarter of a mile upstream at different datum.

Average discharge. 28 years, 224 cfs.

Extremes.--Maximum discharge during year, 2.780 cfs Apr. 30 (gage height, 4.09 ft), from 

rating curve extended above 1,600 cfs; minimum, 14 cfs Aug. 18.

1928-56: Maximum discharge, 5,800 cfs Apr. 30, 1929 (gage height, 8.3 ft, from 

graph based on gage readings, site and datum then in use), from rating curve extended 

above 3,400 cfs; minimum, 6.2 cfs Sept. 17, 18, 1948, Aug. 27, 28, 1949.

Remarks. Records good except those for periods of ice effect, and doubtful or no gageheight record, which are fair. Slight diurnal fluctuation caused by powerplant above 

station.

Revisions (water years).--WSP 1231: 1929-30, 1931-34(M). WSP 1381: Drainage area.

Rating table, water year 1955-56, except periods of ice effect (gage

height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used May 23-26, June 7-12,

Sept. 2-4, 22, 24, 26)

1.4

2.5 

2.9

. 13

20

37

94

165

255

3.4

3.5

3.6

3.7 

4.0

360

440

570

790

2,650

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

26

25

23

21

12

*21

34

59

61

52

39

33

29

26

26

28

30

32

34

32

36

59

60

49

71

M

73

65

60

63

92

1,373

44.3

0.346

0.40

Nov.

241

*190

136

120

262

348

255

211

188

150

136

133

127

142

168

150

199

211

161

123

95

90

71

110

110

83

78

72

64

61

4,485

150

1.17

1.30

Dec.

57

52

56

58

60

58

54

50

48

47

46

45

45

45

46

45

45

44

43

42

40

37

41

44

40

38

36

39

37

1,411

45.5

0.355

0.41

Jan.

35

33

31

31

30

29

29

31

50

330

470

*430

500

370

280

210

170

140

115

105

100

95

90

85

80

76

73

70

68

66

64

4,286

138

1.08

1.25

Feb.

62

60

58

57

56

55

56

58

60

*58

56

55

55

54

54

54

54

E4

E4

53

52

51

~50 50

50

56

62

62

60

1,616

55.7

0.435

0.47

Mar.

56

53

53

52

52

52

51

50

51

52

53 53

53

*53

53

52

52

52

51

50

50

50

53

54

53

50

49

48

47

46

46

1,590

51.3

0.401

0.46

Apr.

48

51

60

100

400

650

742

630

542

392

342

440

556

590

514

610

1,370

1,370

1,030

838

630

528

476

*392

324

368

400

838

1,630

2,530

19,391

646

5.05

5.63

May

1,930

1,630

1,570

1,510

1,630

1,370

1,370

1,200

886

886

1,200

dl,100

1,200

1,500

1,350

950

850

600

450

500

370

300

238

220

190

*168

538

dl,700

dl,050

d650

29,594

955

7.46

8.60

June

476

384

d380

d520

d450

342

241

193

208

220

224

178

148

125

110

97

84

75

66

62

61

72

74

72

81

86

78

82

*85

83

5,357

179

1.40

1.56

July

81

75

105

76

57

51

65

90

95

133

107

74

61

82

138

120

92

68

55

45

39

36

51

87

98

80

58

44

d35

d30

d27

2,255

72.7

0.568

0.66

A'!?.

d25

d24

*d23

22

20

19

17

17

16

19

24

24

22

19

20

17

16

15

42

84

47

33

27

27

39

46

36

40

44

50

 193

1,067

34.4

0.269'

0.31

Sept.

306

180

220

152

97

72

70

66

58

50

M

47

53

50

*58

73

114

142

115

151

392

190

134

174

278

182

134

110

93

3,887

130

1.02

1.13

Calendar year 1955: Max 3,430 Mln 8.8 Mean 205 Cfsm 1.60 In. 21.79

Water year 1955-56: Max 2,530 Min 15 Mean 209 Cfsm 1.63 In. 22.18

Peak discharge (base, 1,700 cfs). --Apr. 30 (3:30 a.m.) 2,780 cfs (4.09 ft): May 14 (about 3 p.m.)

about 2,100 cfs; May 28 (about 9 p.m.) about 2,200 cfs.

* Discharge measurement made on this day.

d Doubtful gage-height record; discharge computed on basis of recorder graph, weather records, and

records for station at Victory.

Stage
160 CONNECTICUT RIVER BASIN

Passumpslc River at Passumpsic, Vt.

Location. Lat 44°21'55", long 72°02 I 20", on right bank 0.7 mile upstream from Waterandrick Brook and 1 mile downstream from dam and village of Passumpsic, Caledonia County.

Drainage area.--436 sq mi.

Records available.--October 1928 to September 1956. October 1928 monthly discharge only, 

published in WSP 1301.

Gage. Water-stage recorder. Altitude of gage is 490 ft (from topographic map).

Average discharge.--28 years, 732 cfs.

Extremes. Maximum discharge during year, 6,460 cfs Apr. 30 (gage height, 10.84 ft); minimum daily, 98 cfs Aug. 18.

1928-56: Maximum discharge, 16,000 cfs,Mar. 18, 1936 (gage height, 21.23 ft), from 

rating curve extended above 9,200 cfs on basis of computation of peak flow over dam; 

minimum daily, 13 cfs Sept. 12, 1948.

Maximum stage known, about 31.5 ft in November 1927, from information by local 

resident.

Remarks. Records excellent except those below 150 cfs, which are good, and those for 

periods of ice effect or no gage-height record, which are fair. Plow regulated by 

powerplants above station.

Revisions (water years).--WSP 781: 1933(M). WSP 871: Drainage area. WSP 1231: 1929, 

1930-31(M).

Rating table, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.7 

2.1 

2.5 

3.0

160

291

535

5.0

7.0

11.0

1,880

3,330

6,600

year- October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

l \

14*

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf sm

In.

Oct.

148

124

151

132

143

134

171

*228

270

240

190

155

145

130

129

115

157

178

168

166

189

282

256

211

303

356

272

259

235

228

556

6,401

206

0.472

0.55

Nov.

824

*645

480

430

1,020

1,280

907

772

687

546

518

540

491

535

606

530

657

657

508

445

357

415

280

462

420

370

330

290

330

300

16,632

554

1.27

1.42

Dec.

290

280

270

250

270

240

220

210

200

*190

190

180

180

180

180

180

175

180

175

170

160

155

150

160

170

180

170

160

150

160

155

5,980

193

0.443

0.51

Jan.

150

140

130

135

140

140

135

130

200

1,000

1,500

1,400

1,800

1,300

900

700

600

530

460

420

440

420

400

370

350

330

320

310

300

310

15,760

508

1.17

1.34

Feb.

290

790

290

280

280

290

290

290

280

270

270

260

260

260

260

260

250

270

260

250

250

250

240

240

240

270

280

270

260

7,750

267

0.612

0.66

Calendar' year 1955: Max 7,870 Min 55

Mar.

250

250

260

250

250

250

240

240

240

240

240

240

240

240

250

240

230

230

230

230

230

240

250

240

240

240

240

240

240

240

240

7,480

241

0.553

0.64

Apr.

240

250

300

500

1,200

1,800

2,000

1,800

1,500

1,200

1,000

1,300

1,550

1,600

1,390

2,100

*4,350

3,260

2,540

1,940

1,630

1,500

1,440

1,240

1,130

1,250

1,310

2,840

4,270

5.900

54,330

1,811

4.15

4.63

May

4,510

3,350

3,720

4,120

3,950

3,400

3,060

2,520

2,050

2,640

2,650

2,270

2,710

3,230

2,730

2,110

2,080

1,590

1,370

1,450

1,170

*1,010

963

900

776

723

2,760

4,090

2,430

1,570

1,560

73,464

2,370

5.44

6.27

June

1,600

1,380

1,350

1,570

1,300

1,120

893

772

907

928

963

747

634

550

470

410

350

310

290

270

300

330

290

320

360

330

300

340

360

350

20,094

670

1.54

1.71

July

*330

379

454

322

252

262

380

460

496

817

530

375

321

563

605

524

366

304

252

217

208

179

283

425

403

311

226

201

166

162

168

10,961

354

0.812

0.93

Aug.

163 '154

156

*104

123

164

145

104

116

128

161

122

141

130

117

121

122

98

204

363

198

170

156

137

223

184

204

198

220

256

702

5,584

180

0.413

0.46

Sept.

837

552

824

540

345

284

230

230

235

210

167

T9l

212

191

234

258

419

491

404

664

1.090

618

462

608

771

562

400

348

299

272

12,948

432

0.991

1.10

Mean 682 cfsm 1.56 ln . 21.23

Water year 1955-56: Max 5,900 Min 98 Mean 649 Cfsm 1.49 In. 20.24

Peak discharge (base, 5,000 cfs).--Acr. 30 flO a.m.) 6.460 cfs flO.84 ft): Mav 27 (6:3O to 7 : SO

p.m.) 5,450 cfs (9.65 ft).

* Discharge measurement made on this day.

Note.--No gage-height record June 14 to July 1; discharge estimated on basis of 1 discharge measurement, weather records, and records for East Branch Passumpsic River near East Haven and Moose 

River at St. Johnsbury. Stage-discharge relation affected by ice Nov. 23, Nov. 25 to Apr. 14.
CONNECTICUT RIVER BASIN 161

Ammonoosuc River at Bethlehem Junction, N. H.

Location. Lat 44 0 16'10", long 71°37'50", on left bank 0.25 mile upstream from Pierce 

Bridge and Bethlehem Junction, 0.8 mile upstream from unnamed tributary entering from 

left, 3 miles east of Bethlehem, Grafton County, and 3.4 miles downstream from Little 

River.

Drainage area. 97.6 sq mi.

Records available. August 1939 to September 1956.

Gage. Water-stage recorder. Datum of gage is 1,180.74 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers).

Average discharge. 17 years, 213 cfs.

Extremes. Maximum discharge during year, 3,750 cfs May 27 (gage height, 7.42 ft); minimum, 

37 cfs Oct. 6.

1939-56: Maximum discharge, 10,500 cfs Mar. 27, 1953 (gage height, 11.22 ft), from 

rating curve extended above 4,100 cfs by logarithmic plotting; minimum, 16 cfs Nov. 14, 

1952 [caused by anchor ice upstream).

Remarks.--Records excellent except those for periods of ice effect, which are fair.

Rating table, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

140

250

395

740

1,310

2,110

3,220

Discharge, in cubic fee.t per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

46

44

41

40

38

38

105

*104

81

64

55

50

48

45

56

71

71

92

74

68

75

105

82

75

143

101

85

77

78

8 1

,568

2,501

80.7

0.921

1.06

Nov.

*368

285

181

163

248

335

281

255

204

162

145

134

134

126

132

116

211

154

121

106

96

94

95

127

100

81

80

84

69

JL5

4,750

158

1.80

2.02

Dec.

69

66

74

70

70

63

50

54

55

58

59

*54

54

53

53

52

50

51

49

44

41

39

38

42

50

49

47

45

44

45

43

1,631

52.6

0.600

0.69

Jan.

40

39

39

40

40

39

38

38

460

*1,160

672

566

569

310

*210

175

145

115

100

92

99

97

94

*86

86

84

80

76

72

68

66

5,795

187

2.13

2.46

Feb.

63

63

63

58

68

65

62

63

60

58

*58

61

58

54

54

49

47

57

55

54

54

51

*53

52

57

85

~76 110

66

1,774

61.2

0.699

0.75

Mar.

64

62

61

60

58

57

57

54

54

55

56

62

*60

56

54

52

56

53

51

*5_Q

50

51

54

53

53

52

52

51

51

54

54

1,707

55.1

0.629

0.72

Apr.

54

55

72

*140

450

430

371

284

204

153

140

186

245

252

202

433

880

*476

356

272

252

240

211

181

164

181

201

791

1,290

 1 ' 930

11,096

370

4.22

4.71

May

786

636

905

875

692

720

664

544

460

920

670

1,020

2,170

1,260

1,000

790

720

455

380

365

314

364

639

430

287

245

1,900

*1,450

623

524

622

23,430

756

8.63

9.95

June

527

422

796

622

422

338

281

242

223

220

296

214

175

154

134

121

110

101

96

92

99

102

86

116

108

91

84

100

86

*85

6,543

218

2.49

2.78

July

76

74

73

66

62

82

109

140

365

348

158

132

130

662

493

377

232

175

135

115

101

97

99

124

116

106

88

77

73

71

67

5,033

162

1.85

2.14

Aug.

66

69

62

58

66

58

52

50

61

65

126

82

66

*55

52

49

46

44

51

62

50

51

48

52

64

50

51

45

44

57

555

?,087

67.3

0.768

0.89

Sept.

435

188

248

149

114

104

244

147

115

101

90

88

80

78

132

108

*162

195

140

304

306

181

145

383

298

214

166

142

126

115

5,298

177

2.02

2.25

Calendar year 1955 Max 2,700 Mln 33 Mean 195 Cfsm 2.23 in . 30.27

Water year 1955-56 Max 2,170 Hin 38 Mean 196 Cfsm 2.24 m. 30.4?

Peak discharge (base. 2.700 efs). May 13 (12 m.) 3,220 cfs (7.00 ft)j May 27 (3 p.m.) 3,750 cfs 

(7.42 ft).

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Nov. 27 to Jan. 10, Jan. 14 to Feb. 22, Feb. 26 to 

Mar. 29, Apr. 2, 4-6 (no gage-height record Dec. 21-27).
162 CONNECTICUT RIVER BASIN

Ammonoosuc River near Bath, N. H.

Location.--Lat 44 0 09'15", long 71°59'10", on left bank 0.4 mile downstream from Wild 

Ammonoosuc River and lj miles downstream from Bath, Grafton County.

Drainage area. 395 sq mi.

Records available. September 1935 to September 1956.

Gage. Water-stage recorder. Datum of gage is 454.14 ft above mean sea level, datum of 

T929 (levels by Connecticut River Power Co.).

Average discharge. 21 years, 682 cfs.

Extremes.--Maximum discharge during year, 9,220 cfs May 27 (gage height, 9.39 ft); minimum 

daily, 104 cfs Oct. 6.

1935-56: Maximum discharge, 27,900 cfs Mar. 18, 1936 (gage height, 15.40 ft), from 

rating curve extended above 13,000 cfs; minimum daily, 48 cfs Sept. 3, 1939.

Remarks. Records good except those for periods of ice effect and doubtful or no gageheight record, which are fair. Diurnal fluctuation at low flow caused by small powerplants above station.

Revisions.--WSF 871: Drainage area.

Rating tables, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Jan Jan. 1O to Sept. 30

1.5 

2.0 

2.5 

3.0 

4.0

92

172

290

485

1,060

1.5 

2.0 

2.5 

3.0

112

212

340

525

4.0 1,060

5.0 1,900

6.0 3,100

8.0 6,300

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

114

127

116

119

108

104

256

368

*267

211

170

156

151

123

122

120

157

172

194

178

160

210

227

198

265

318

244

213

194

478

6,038

195

0.494

0.57

Nov.

970

1.030

580

485

824

1,030

*958

848

702

526

472

436

400

380

380

368

498

555

400

332

297

270

217

346

342

246

240

235

220

180

14,767

492

1.25

1.39

Dec.

200

200

ISO

200

200

180

150

160

165

170

ISO

170

160

155

150

145

145

150

140

130

125

120

115

125

140

140

135

130

130

135

125

4,750

153

0.387

0.45

Jan.

120

115

115

120

120

115

110

110

150

1,700

1,850

1,300

1,740

*1,040

740

560

520

450

400

360

380

370

360

340

350

330

310

300

280

270

260

15,285

493

1.25

1.44

Feb.

25O

240

240

230

260

250

240

240

230

230

*220

210

210

200

ZOO

200

190

210

210

205

200

190

200

200

220

280

340

300

270

6,665

230

0.582

0.63

Calendar year 1955: Max 7,500 Mln 85

Mar.

250

240

230

220

220

220

210

210

210

210

220

240

240

220

215

205

220

215

*210

205

205

210

210

215

215

205

205

200

2GO

210

210

6,695

216

0.547

0.63

Apr.

210

210

260

450

2,300

2,700

2,400

1,900

1,330

1,OOO

942

1,300

1,600

1,710

1,390

2,620

5,800

3,230

2,220

1,640

1,410

1 , 300

*1,200

1,070

918

972

966

2,360

4,600

5, 900

55,908

1,864

4.72

5.26

May

2,970

2,110

2,370

2,620

2,280

2,040

1,800

1,500

1,190

1,700

1,750

1,840

d3,690

d2 , 900

2,440

1,850

1,970

1,270

1,000

948

828

BOO

1,290

1,260

795

680

d3,820

*5.340

2,100

1,580

1,610

60,341

1,946

4.93

5.68

June

1,420

1,140

1,770

1.830

1,220

936

765

651

602

574

750

620

481

449

367

301

304

269

254

240

259

288

252

340

367

288

262

259

259

233

17,750

592

1.50

1.67

Jul-i-

*228

*214

190

175

171

208

296

405

912

1,380

633

409

473

1.680

1,520

1,080

700

521

398

337

280

272

272

5O9

548

421

329

272

242

221

210

15,506

500

1.27

1.46

Aug.

179

*186

173

155

163

155

147

140

138

149

245

242

199

161

141

136

125

113

126

119

145

141

127

134

133

151

151

141

123 

*118

575

4,929

159

0.403

0.46

Sept.

1.220

658

730

548

370

323

633

517

380

320

285

264

230

250

380

367

525

*620

481

664

1,020

584

445

1,130

1,100

705

538

453

400 

352

16,492

550

1.39

1.55

Mean 627 Cfsm 1.59 In. 21.53

Water year 1955-56: Max 5,900 Min 104 Mean 615 Cfsm 1.56 In. 21.19

Peak discharge (base. 6.500 cfs). Apr. 17 (6 to 7:30 a.m.) 6,880 cfs (8.31 ft); Apr. 30 (9:30 

a.m.) 6,880 cfs (8.31 ft); May 27 (10:30 p.m.) 9,22O cfs (9.39 ft).

* Discharge measurement made on this day.

d Doubtful gage-height record; discharge computed from reconstructed gage-height graph based on 

recorded graph, weather records, and records for nearby stations.

ords
CONNECTICUT RIVER BASIN 163

Connecticut River at Wells River, Vt.

Location, Lat 44°09'15", long 72°02'35", on right bank 200 ft downstream from bridge on

 U.S." Highway 302, at Wells River, Orange County, 400 ft upstream from Wells River,

and 1,200 ft downstream from Ammonoosuc River. 

Drainage area. 2,644 sq mi.

' Records available.--October 1949 to September 1956. October and November 1949 monthly 

t\ discharge only, published in WSP 1301.

.- Gage. Water-stage recorder. Datum of gage is 399.75 ft above mean sea level, datum of 

1929.

- Ave rage di s charge. 7 years, 4,99.1 if a (adjusted for storage).

Extremes.--Maximum discharge during year, 27,200 cfs Apr. 30 (gage height, 10.00 ft); 

minimum daily, 385 cfs Aug. 26.

1949-56: Maximum discharge, 54,000 cfs Mar. 27, 1953 (gage height, 15.96 ft); minimum daily, 337 cfs Aug. 7, 1955.

Remarks.--Records good except those for period of no gage-height record, which are fair. 

Plow regulated by powerplants, by First Connecticut and Second Connecticut Lakes. Lake 

Francis, Moore Reservoir '(dead storage October to March, live storage thereafter) and 

Comerford Station Pond (see p. 230), and other reservoirs (combined usable capacity, 

about 14f billion cubic feet).

Rating tables, water year 1955-56, except periods of Ice effect (gage height, 

in feet, and discharge, in cubic feet per second)

Oct. 1 to Apr. 30 May 1 to Sept. 30

1.1 

1.5 

2.0 

3.0

430

770

1,340

2,740

4.0 

5.0 

7.0 

9.0

4,400

6,650

14,200

22,700

1.0

1.4 

2.0 

3.0

340

600

1,240

2,640

4.0 

5.0 

7.0 

9.0

4,400

6,650

14,200

22,700

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

(t)

Oct.

991 

451

1,090

1,360

1,600

1,850

2,000

946

670

1,460

1,930

1,730

1,550

1,440

1,540

832

1,130

1,510

1,660

1,590

1,100

607

652

1,260

2,160

2.400 

2,260

1,930

1,930

1,130

1,890

44,649

1,440

-226

Nov.

3,250 

3,250

2,740

2,590

3,180

5.550

5,200

*2,980

2,950

2,710

2,700

2,590

2,580

2,560

2,560

3,260

3,250

2,800

2,960

2,420

2,700

3,090

2,350

1,550

2,080

2,340 

1.410

1,620

2,290

2,220

79,510

2,650

+939

Dec.

2,260 

2,170

2,140

1,420

1,850

2.300

2,220

2,180

2,120

1,960

1,050

*1,290

2,020

1,920

1,990

1,950

1,950

1,310

1,760

2,100

 2,100

2,000

1,800

1,400

520

520 

1,500

1,700

1,800

1,600

1,200

54,100

1,745

-394

Jan.

500 

490

1,100

1,500

1,450

1,400

1,100

520

1,300

4,150

5,220

4,880

5.340

4,980

3,440

2,720

2,620

2,590

2,710

2,600

2,300

2,160

2,440

3,040

3,040

2,820 

2,580

2,380

2,290

2,300

2,520

78,480

2,532

+764

Feb.

2,470 

2,450

2,450

2,200

2.050

2,160

2,350

2,940

3,020

5.220

2,590

2,500

2,580

2,480

2,500

2,470

2,540

2,460

2,410

2,350

2,470

2,440

2,440

2,440

2,260

2,440 

2,480

2,500

2,460

 

72,120

2,487

-878

Mar.

2,470 

2,720

2,640

2,440

2,740

3,340

5.570

3,490

2,470

2,350

1,990

2,260

2,740

5,060

2,820

3,170

2 , 400

1,670

2,140

 2 , 500

2,440

2,440

2,800

2,600

2,350

2,260 

2,420

2,360

2,290

2 300

1^260

78,500

2,532

-975

Apr.

643 

1,350

2,290

2,600

5,420

10,300

10,300

7,950

7,420

6,500

6,480

8,020

8,680

8,950

7,700

10, 400

20, 300

19,300

17,100

14,700

10, 700

8,300

*9,800

11,000

8,650

8,020 

6,620

8,510

14,600

22.000

284,585

9,486

+2,898

May

22.700 

22,200

21,900

21,400

21,800

19,500

18,000

16,200

15,800

13,900

15,200

14,600

16,500

19,100

19,900

17,400

14,800

15,000

10, 500

5,700

7,600

7,780

7,560

7,560

6,000

5.220 

10,100

21,400

*15,900

10,800

9,280

447,300

14,430

+1,589

June

10.400 

9,800

8,960

9,760

8,930

7,880

7,560

5,880

3,280

2,540

5,580

5,160

4,560

2,990

3,200

2,400

1,590

1,890

1,920

. 1,860

1,750

2,080

1,520

720

1,610

1,950 

2,020

2,450

2,400

2,160

124,800

4, 160

+375

July

1,100 

*1,880

2,330

805

2,430

2,650

1,350

1,560

2,750

5.550

5,100

3,440

2,660

4,060

4,020

3,790

3,490

3,280

2,800

2,400

2,260

1,390

1,360

2,420

2,510

2,450 

2,460

2,180

1,180

2,340

2,000

79,995

2,580

-107

Auf*.

1,410 

*1,340

1,370

836

499

896

1,290

1,250

1,410

1,320

680

506

894

1,410

1,240

1,340

1,240

1,180

438

' 934

1,350

1,360

1,300

1,320

1,100

385 

92?

1,450

2,000

2,120

2_, 8 60

37,654

1,215

-219

Sept.

5.380 

3,110

3,280

4,900

4,230

3,230

2,830

2,460

790

1,400

2,160

2,160

1,860

1,410

1,330

506

»1,'950

3,670

3,250

2,750

4,020

2,720

2,460

4,820

4,560

4,170 

3,650

3,720

2,270

1,610

86,656

2,889

+37.5

Adjusted for change In reservoir contents

Mean 

Cfsm 

In.

1,214 

0.459 

0.53

3,589 

1.36 

1.51

Calendar year 1955: 

Water year 1955-56:

1,352 

0.511 

0.59

3,295 

1.25 

1.44

1,609 

0.609 

0.66

1,558 

0.589 

0.68

12,380 

4.68 

5.23

16,020 

6.06 

6.98

Observed

Max 39,300 Min 337 Mean 4,492 

Max 22,700 Mln 385 Mean 4,012

4,535 

1.72 

1.91

2,474 

0.936 

1.08

996 

0.377 

0.43

2,926 

1.11

1.23

Adjusted

Mean 4,546 Cfsm 1.72 In. 23.34 

Mean 4,327 Cfsm 1.64 In. 22.27

Peak discharge (base. 

(9.62

23.000 cfs).--Apr. 30 (5:30 to 7 p.m.) 27,200 cfs (10.00 ft); Maj- 28 (12:30

a.m.) 25,500 cfs (9.62 ft).

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in First Connecticut and Second' Connecticut Lakes, Lake Francis, Moore Reservoir, Comerford Station Pond, and prior to April, dead 

storage in Moore Reservoir.

Note. No gage-height record Dec. 23 to Jan. 9; discharge estimated on basis of weather records, 

recorded range in stage, powerplant records, and record for Ammonoosuc River near Bath, V. H. 

Stage-discharge relation affected by ice Dec. 20-22, Jan. 20, 21, Feb. 2-5, Mar. 10, 18, 20, 25, 

and at times during period of no gage-height record.
164 CONNECTICUT RIVER BASIN 

Wells River at Wells River, Vt.

Location. Lat 44°09'05", long 72°04'00", on right bank 800 ft upstream from railroad 

 bridge, 0.8 mile west of village of Wells River, Orange County, and 1.5 miles upstream 

from mouth.

Drainage area.--98.4 sq mi.

Records available. August 1940 to September 1956.

Gage. Water-stage recorder. Datum of gage is 505.53 ft above mean sea level, datum of 

1929 (levels by Connecticut River Power Co.).

Average discharge. 16 years, 144 cfs.

Extreme s. Maximum discharge during year, 1,590 cfs May 27 (gage height, 5.30 ft); minimum, 14 cfs Aug. 18, 30; minimum daily, 24 cfs Jan. 2, 8.

1940-56: Maximum discharge, 3,230 cfs June 2, 1952 (gage height, 8.12 ft), from 

rating curve extended above 1,300 cfs on basis of computation of peak flow over dam; 

minimum, 5.1 cfs Oct. 6, 1948; minimum daily, 8.3 cfs Sept. 5, 1953.

Remarks.--Records excellent except those for periods of ice effect or no gage-height record, which are fair. Some diurnal fluctuation at low flow caused by small powerplant 

above station. Flow partly regulated by Groton and Ricker Ponds.

Revisions (water years). WSP 1171: 

1946-471P), 1948(M), 1950.

Drainage area. WSP 1201: 1942(P), 1944-45(M),

Rating table, water year 1955-56, except periods of ice effect (gage 

height, In feet, and discharge, in cubic feet per second)

2.2 

2.6

102

194

3.0 

3.5 

4.0 

5.0

311

517

780

1,400

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

44

43

38

35

33

31

123

94

*65

48

38

34

34

30

19

31

43

60

46

39

40

51

44

39

53

47

45

41

38

36

135

1,507

48.6

0.494

0.57

Nov.

122

86

65

72

219

*202

140

120

101

82

79

90

79

74

75

70

120 

100

84

75

70

70

61

84

77

61

67

58

56

5?

2,718

90.6

0.921

1.03

Dec.

54

52

55

54

55

55

42

48

42

41

41

38

*40

40

41

41

39 

38

37

34

33

33

30

!£

29

30

32

31

30

29

28

1,220

39.4

0.400

0.46

Jan.

26

24

25

26

27

26

26

24

25

80

160

210

300

#195

150

110

95 

80

76

76

78

74

65

62

60

58

55

52

50

52

52

2,419

78.0

0.793

0.91

Feb.

52

50

48

46

50

47

50

52

50

47

46

52

*55

51

51

50

46

51

50

48

46

43

45

45

50

83

65

58

52

1,474

50.8

0.516

0.56

Calendar year 1955: Max 1,440 Min 15

Mar.

50

56

56

56

54

53

55

56

56

53

56

58

55

54

54

50

50 

49 *4~9"

52

56

60

6(T

56

53

56

54

53

53

54

55

1,682

54.3

0.552

0.64

Apr.

55

61

77

137

405

470

410

354

269

225

230

325

378

350

314

556

1.150 

816

630

476

415

366

362

*318

284

314

314

570

906

1,070

12,587

420

4.27

4.76

May

852

655

714

726

738

585

490

407

332

399

386

332

346

374

378

318

336 

269

239

236

200

178

176

173

146

135

762

1.050

*527

378

328

13,145

424

4.31

4.97

June

275

242

459

555

358

293

234

191

173

171

197

156

131

114

100

88

79 

70

65

64

71

81

66

116

110

83

74

85

70

64

4,835

161

1.64

1.83

Jlly

60

*56

52

46

44

94

120

94

127

126

86

70

65

244

156

161

102 

80

65

56

52

51

54

97

89

79

60

52

47

44

ii

2,570

82.9

0.842

0.97

Aug.

40

39

37

*35

35

34

32

32

30

30

37

36

34

31

30

28

25 

25

31

33

30

30

27

29

33

31

30

27

26

£8

115

1,058

34.1

0.347

0.40

Sept.

162

103

~87 266

58

47

61

50

48

43

39

43

37

36

45

42

*69

71

53

115

117

72

59

147

120

82

67

60

- 54

50

2,298

76.6

0.778

0.87

Mean 133 Cfsm 1.35 In, 18.39

Water year 1955-56: Max 1,130 Mln 24 Mean 130 Cfsm 1.32 In. 17.97

Peak discharge (base, 980 cfs). --Apr. 17 (6:30 to 7:30 a.m.) 1.240 cfs (4.76 f 1:): Acr. 30 (7:30

to 8:30 a.m.) 1,120 cfs (4.57 ft); May 27 (10 p.m.) 1,590 cfs (5.30 ft).

* Discharge measurement made on this day.

Note . Stage-discharge relation affected by ice Nov. 26 to Mar. 30, Apr. 6, 7 (no gage-height record Dec. 17 to Jan. 10; discharge estimated on basis of weather records, recorded range in stage,

and records for Dog River at Northfield Falls (Part 4) and Ayers Brook at RandolDh.
CONNECTICUT RIVER BASIN

Ompompanoosuc River at Union Village, Vt.

Location. Lat 43°47'20", long 72°15'20", on right bank 100 ft upstream from covered 

bridge at Union Village, Orange County, a quarter of a mile downstream from J>very 

Brook, and 0.3 mile downstream from Union Village Reservoir.

Drainage area.--130 sq mi.

Records available. --September 1940 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 435 ft (from topographic map).

Average discharge. --16 years, 203 cfs (adjusted for storage).

S£^ft3r5S1SS. di!!hl5f11 ffiSS SS.W'WV7 (gage helghtl 7 ' 16 ft); mln1 '

1940-56: Maximum discharge, 4,800 cfs June 3, 1947 (gage height, 9.65 ft), from 

rating curve extended above 2,400 cfs on basis of slope-area determination of peak 

flow; minimum, 1.7 cfs Oct. 14, 1949; minimum daily, 2.0 cfs Oct 20, 1949

Maximum stage known, about 14.5 ft in November 1927, from information by local 

resident. J

Remarks Records good except those for periods of ice effect or no gage-height record 

?Loh ao e falr ' Flow regulated by Union Village Reservoir (see p. 230) since October 

1949. Some regulation by Lake Fairlee.

Rating tables, water year 1955-56, except period of Ice effect (gage height, 

In feet, and discharge, In cubic feet per second)

Oct. 1 to Apr. 17 Apr. 18 to Sept. 30

3.1 34

3.4 67

4.0 175

5.0 495

6.0 940

7.0 1,650

7.5 2,050

2.9 

3.2 

3.6 

4.0

104

183

5.0 495

6.0 940

7.0 1,650

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Ttobal

Mean

(t)

Oct.

67

66

50

42

*38

41

180

141

113

92

80

74

70

66

59

52

109 

144

110

100

93

95

88

87

103

95

90

86

84 

83

 350

2,948

95.1

+0.75

Nov.

257

188

162

155

*192

443

446

355

260

210

220

240

220

205

200

190

280 

220

200

190

180

170

160

180

175

150

130

140

120 

100

6,333

211

+0.23

Dec.

110

94

110

115

120

105

85

105

100

97

94

87

82

78

75

72

65 

73

66

59

53

58

56

50

51

52

51

50

49

47 

46

2,355

76.0

-0.86

Jan.

44

43

42

45

48

52

48

45

54

180

280

270

430

450

320

240

*190 

150

120

105

110

105

100

98

85

81

80

77

76

74 

72

4,114

133

+4.07

Feb.

70

67

69

66

68

70

*71

71

70

70

68

70

74

73

72

71

70 

68

80

92

70

66

64

67

70

76

85

96

84

2,108

72.7

-1.00

Mar.

84

8T

77

82

77

73

70

70

66

.§i

71

75

*72

72

72

67

65

70

76

76

76

75

74

74

75

75

74

74

74

74

73

2,278

73.5

+0.22

Apr.

74

120

100

150

528

766

758

597

440

382

470

686

753

668

562

1,010

1.700 

*1 , 550

976

748

690

676

663

569

523

548

540

832

1,380

1,610

21,069

702

+9.88

May

699

1.180

1,030

730

712

581

516

450

402

433

385

351

327

378

365

344

*341 

288

270

261

230

215

220

212

185

174

461

481

1,030

828

453

14,532

469

-12.1

June

382

351

984

1,360

672

537

429

361

331

338

324

255

223

195

168

148

132 

*116

107

101

98

96

88

94

107

89

81

92

83

81

8,423

281

-0.81

July

74

65

61

56

51

112

123

116

601

273

174

138

208

680

395

327

385 

244

185

155

134

140

132

127

119

138

106

94

82

75

72

5,642

182

0

Aug.

66

*66

57

54

51

48

46

44

42

46

46

42

40

38

36

34

33 

33

34

35

35

37

34

35

38

35

34

33

31

33

78

1,314

42.4

+0.45

Sept.

101

291

249

114

86

84

144

96

79

67

60

58

56

52

86

75

' 198 

206

132

186

183

134

116

345

239

183

159

142

129

118

4,168

139

0

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

95.8 

0.737 

0.85

211 

1.62

1.81

Calendar year 1955: 

Water year 1955-56:

75.1 

0.578 

0.67

137 

1.05 

1.21

71.7 

0.552 

0.59

73.7 

0.567 

0.65

712 

5.48

6.11

457 

3.52 

4.05

Observed

Max 1,500 Mln 22 Mean 199 

Max 1,700 Mln 31 Mean 206

280 

2.15 

2.40

182 

1.40 

1.61

42.8 

0.329

0.38

139

1.07 

1.19

Adjusted

Mean 198 Cfsm 1.52 In. 20.70 

Mean 206 Cfsm 1.58 In. 21.52
166 CONNECTICUT RIVER BASIN

Ayers Brook at Randolph, Vt.

Location.--Lat 43°56'05", long 72°39'30", on right bank 55 ft upstream from bridge on 

 State Highway 12, just north of village limits of Randolph, Orange County, 0.4 mile 

upstream from Adams Brook, and 1.2 miles upstream from mouth.

Drainage area. 30.5 sq mi.

Records available.--July 1939 to September 1956.

Gage. Water-stage recorder. Datum of gage is 632.75 ft above mean se<3 level, datum of 

1929 (levels by Corps of Engineers).

Average discharge. 17 years, 47.6 cfs.

Extremes.--Maximum discharge during year, 691 cfs Apr. 30 (gage height, 3.98 ft); minimum, 

3.5 cfs Aug. 17, 18, 24, 29, 30.

1939-56: Maximum discharge, 3,490 cfs June 1, 1952 (gage height, 7.58 ft), from 

rating curve extended above 500 cfs by logarithmic plotting; minimum, 1.2 cfs Aug. 27, 

1949.

Maximum stage known, about 16 ft in November 1927, from information by local 

residents.

Remarks. Records excellent except those for period of backwater from debris, which are 

good, and those for periods of Ice effect, which are fair.

Rating tables, water year 1955-56, except periods of Ice effect and backwater 

 from debris (gage height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Apr. 16

.9 

1.2

1.5 61

2.0 121

2.5 207

3.0 330

.3

.5

.9

1.2

1.5

Apr. 17 to Sept. 3O

i 2.0 

) 2.5 

> 3.0 

3.5 

4.0

129

212

330

490

700

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14 .

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

5.5

4.9

4.7

4.3

*4.5

»5.0

32

21

14

11

8.5

7.7

7.2

7.2

7.2

7.2

22

24

17

13

12

12

11

11

14

12

13

12

11

11

±1

393.9

12.7

0.416

0.48

Nov.

*31

24

22

?9

44

37

31

29

27

26

28

30

27

28

27

27

"37 58

32

30

28

28

26

29

28

26

24

24

22

23

882

29.4

0.964

1.O8

Dec.

21

20

22

22

24

23

*18

20

18

18

18

 17

17

17

17

17

15

' 17

15

13

13

11

9 in

11

12

11

10

10

9.5

9

484.5

15.6

0.511

0.59

Jan.

8

9

9

10

11

10

10

10

10

40

57

75

87

42

39

33

*29

21

18

21

22

20

20

18

16

16

16

15

13

15

14

734

23.7

0.777

0.89

Feb.

14

14

14

11

14

15

14

14

14

14

14

14

14

14

14

11

11

13

13

14

13

14 9.9

13

14

25

22

17

13

410.9

14.2

0.466

0.50

Mar.

15

17

17

19

16

15

17

16

13

16

16

17

16

*15

15

10

14

20

17

16

16

19

23

18

14

19

16

17

17

19

17

512

16.5

0.541

0.62

Apr.

17

T5

25

48

145

165

140

103

73

79

120

178

160

131

120

304

396

257

*206

184

*163

166

149

132

126

129

126

222

403

496

4,982

166

5.44

6.07

Calendar year 1955: Max 486 Mln 1.8 Mean 4O.5

May

262

208

218

208

182

154

132

114

101

102

90

84

78

90

*81

74

72

62

59

57

51

48

47

43

39

38

218

152

96

88

88

3,336

108

3.54

4.07

June

76

68

166

126

95

87

74

65

64

66

64

52

45

40

36

31

29

26

*24

22

24

23

21

29

25

21

22

25

20

18.

1,484

49.5

1.62

1.81

Cfsm 1.33

July

17

15

14

12

11

30

29

21

53

36

23

26

33

84

41

31

28

23

20

18

16

18

18

18

20

24

17

15

12

12

*11

746

24.1

0.790

0.91

Aug.

10

9.6

8.2

7.7

7.2

6.7

6.4

6.9

6.2

5.9

5.3

4.9

4.7

4.5

3.9

3.8

3.6

3.5

5TT

4.7

*4.1

4.1

3.8

4.6

5.7

4.3

4.3

3.9

3.5

6.6

27

190.7

6.15

0.202

0.23

Sept.

21

40

28

14

11

9.2

17

11

9.9

8.2

7.7

7.5

6.9

8.0

9.9

15

23

19

14

45

- 26

18

18

56

28

22

19

18

16

16

562.3

18.7

0.613

0.69

In. 18.05

Water year 1955-56 : Max 496 Mln 3.5 Mean 40.2 Cfsm 1.32 In. 17.94

Peak discharge (base. 350 efs). Apr. 17 (2:30 to 4:30 a.m.) 458 cfs (3.41 ft); Apr. 3O (2 a.m.) 

691 cfs (3.98 ft); May 27 (8 p.m.) 408 cfs (3.28 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by lee Nov. 23, 26, 27, 29, Dec. 15 to Jan. 12, Jan. 25, 

Feb. 3, 7, 18, 23, 26, 27, Mar. 1 to Apr. 7. Backwater from debris May 18 to June 19.
CONNECTICUT RIVER BASIN 167

White River at West Hartford, Vt.

Location.--Lat 43°42'45" > long 72°25'10", on left bank 500 ft upstream from highway bridge 

at West Hartford, Windsor County, and 7 miles upstream from mouth.

Drainage area.--690 sq mi.

Records available. June 1915 to September 1956. Monthly discharge only October 1927 to

September 1928, published In WSP 1301.

Gage. Water-stage recorder. Datum of gage is 374.53 ft above mean sea level, datum of 

1929. Prior to Oct. 30,- 1927, staff gage at same site and datum.

Average discharge. 41 years, 1,203 efs.

Extremes.--Maximum discharge during year, 16,400 cfs Apr. 30 (gage height, 12.41 ft); minimum, 142 cfs Aug. 18, 30; minimum daily, 150 efs Aug. 30.

1915-56: Maximum discharge, 120,000,cfs Nov. 4, 1927 (gage height, 29.3 ft, from 

floodmarks), from rating curve extended above 29,000 cfs on basis of slope-area determination of peak flow; minimum observed, about 35 cfs Aug. 4, 1918; minimum tfaily, 

64 cfs Aug. 4, 1918.

Remarks.--Records good except those for periods of ice effect or doubtful or no gageheight record, which are fair. Some diurnal fluctuation at low flow caused ty powerplant above station.

Revisions (water years).--WSP 756: Drainage area. WSP 781: 1928(M). WSP 1031: 1916(m), 

1921TWSP 1301: T916-26(M), 1929(M).

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Apr. 29 Apr. 30 to Sept. 30

2.9 154

3.2 249

3.5 366

4.0 600

4.5 920

5.0 1,340

Note. Same as following 

table above 5.0 ft.

2.8 

3.0 

3.5 

4.0 

4.5

147

203

378

620

940

5.0

6.0

8.0

10.0

12.0

1,340

2,400

5,630

9,600

15,200

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf sm

In.

Oct.

218

193

177

160

*157

177

1,070

1,190

767

540

424

370

330

298

322

464

684

1,540

976

728

606

709

606

555

794

760

685

616

575 

545

*1,850

19,086

616

0.893

1.03

Nov.

1,890

1,320

1,060

1,160

2,100

2.150

1,850

1,650

1,420

1,230

1,230

1,340

1,250

1,130

1,170

1,080

1,650

1,480

1,200

1,090

992

944

770

976

968

801

690

754

*660 

550

36,555

1,218

1.77

1.97

Dec.

600

510

638 606"

616

570

420

500

520

510

460

440

440

440

440

420

370

430

420

.320

260

290

280

270

280

300

290

*280

270

260

250

12,700

410

0.594

0.68

Jan.

240

230

220

235

260

280

270

240

280

700

1,200

1,500

2.500

1,300

940

800

700

620

560

540

540

470

470

450

430

410

380

360

400

380 

*350

18,055

582

0.843

0.97

Feb.

335

320

350

330

510

350

550

350

550

340

540

560

570

360

560

550

550

540

335

550

325

520

510

510

550

420

580

*500

400

10,355

557

0.517

0.56

Mar.

560

570

400

460

410

590

590

590

570

580

400

410

440

400

580

560

550

370

590

590

590

590

450

440

580

390

390

*410

440

440

440

12,350

598

0.577

0.67

Apr.

440

450

510

700

3,500

5,300

4,750

3,290

2,670

2,540

2,710

5,830

4,190

3,410

2,980

5,660

*9,470

6,440

5,100

4,070

5,620

3,490

5,520

5,020

2,840

3,000

2,880

5,250

11,700

14,900

125,610

4,187

6.07

6.77

May

8. 260

6,180

5,970

5,900

5,370

4,550

5,800

5,100

2,800

2,800

2,500

2,300

2,100

2,550

2,400

2,200

2,100

1,800

1,600

1,500

1,350

*1,200

*1,180

1,100

1,050

950

5,650

6,100

3,000

2,600

2,600

94,560

3,050

4.42

5.10

June

2,150

1,900

4.550

4,350

3,000

2,900

2,300

1,950

1,800

1,700

1,800

1,550

1,300

1,130

980

850

750

680

610

550

650

610

550

690

*600

550

590

640

510

460

42,650

1,422

2.06

2.30

July

420

370

*339

306

298

430

656

550

1,660

1,480

884

728

734

1.750

1,560"

1,000

1,150

805

658

550

490

465

505

941

692

746

620

505

420

*578

362

22,212

717

1.04

1.20

Aug.

520

509

295

274

?54

?54

T37

F54

F18

218

209

205

200

188

180

174

166

160

166

197

183

*183

174

171

180

174

171

169

155

150

*209

6,575

206

0.239

0.54

Sept.

460

755

948

525

358

295

452

412

509

288

254

244

257

222

257

292

750

890

560

783

1,120

692

545

1.250

1,070

760

620

555

490

447

16,780

559

0.810

0.90

Calendar year 1955: Max 13,400 Min no Mean 1,128 Cfsm 1.63 In. 22.20

Water year 1955-55: Max 14,900 Min 150 Mean 1,140 Cfsm 1.65 In. 22.49

Peak discharge (base, 11,600 cfsl. Apr. 30 (4:30 a.m.) 16,400 cfs (12.41 ft).

* Discharge measurement made on this day.

Note. Doubtful or no gage-height record May 7 to July 2; discharge estimated on basis of 3 disDog 

Dec.
168 CONNECTICUT RIVER BASIN 

Connecticut River at White River Junction, Vt.

Location. Lat 43°38'50", long 72°18'45", on right bank 50 ft downstream from railroad

 EH3ge at White River Junction, Windsor County, and 500 ft downstream from White River.

Drainage area. 4,092 sq ml.

Records available. --October 1911 to September- 1956. A 0 <- lm nf Gage.-Water-stage recorder. Datum of gage Is 321.52 ft above mean se-J level, datum of

~^T929 Prior to June 16, 1918, painted staff gage on downstream sld? of pier of railroad 

bridge 50 ft upstream at same datum. June 16, 1918, to Nov. 2, 1930, chain gage at 

various locations on upstream and downstream sides of railroad bridge at same datum.

Average discharge, 45 years, 7,230 cfs (adjusted for storage . .... , K9 f^, ._.

Extremes. Maximum discharge during year, 40,900 cfs Apr. 30 (gage height, 17.6d ft), mm

lBIUmi-56; Taximui/dlsch^rge, 136,000 cfs Nov. 4, 1927 (gage height 35.0 ft present 

site), from rating curve extended above 70,000 cfs by logarithmic plotting; minimum 

dally, 115 cfs Aug. 2, 1953. 

Remarks. Records good except those below 1,000 cfs, which are fair. Flow regulated by

 powerplants and by First Connecticut and Second Connecticut Lakes, Lake Francis, Comerford Station Pond and Moore Reservoir (dead storage October to Marc1}, live storage 

thereafter), Union Village Reservoir (see p. 230 T, and other reservoirs (combined usable capacity, about 1?£ billion cubic feet).

Cooperation.--Wire-weight-gage readings furnished by U. S. Weather Bureau.

RevlslonsTwater years). WSP 741: 1932 (adjusted monthly and yearly figures only).

 WSP 781: 1928(M). WSP 891: Drainage area. WSP 1301: 1922-26(M>.

Rating table, water year 1955-56, e.xcept periods of ice effect (gage 

height, in feet, and discharge, In cubic feet per second)

Z.I 

3.0 

3.5 

4.0 

5.0

183

312

630

1,O4O

2,160

6.0

8.0

12.0

18.0

3,730

3,180

2O,OOO

42,500

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

\

26

27

28

23

30

31

Itobal

Mean

(t)

Oct.

g530

ggSO

1,980

2,190

2,060

2,590

3,250

2,440

*1 , 480

*2,930

2,680

1,900

2,390

4,790

1,250

g478

1,940

3,040

2,940

2,500

1,910

1,360

1,050

2,780

2,730

3,490

2,930

3,490

3,390

912 

5.950

73,610

2,375

-226

Nov.

6,180

5,200

4,640

4,690

6.960

6,930

5,860

6,360

5,370

5,940

4,810

5,060

3,090

4,440

5,140

5,190

5,830

5,920

4,630

3,150

4,560

4,500

4,910

1,730

4,770

3,370

1.260

3,300

3,940

3,280

141,010

4,7OO

+ 939

Dec.

3,320

3,070

2,500

2,250

3,720

*3,530

2,910

2,600

5.780

2,050

700

2,970

2,930

2,700

2,620

2,780

1,730

1,090

5,550

2,700

a2,600

a2,800

a2,050

al,050

a520

a470

a2,400

2,880

2,250

1,700

1,1

75,550

2,566

-394

Jan.

700

950

1,900

2,100

2,300

2,400

550

550

5,100

6,000

8,800

8,000

11.000

8,500

5,200

4,500

5,700

4,100

5,800

5,300

2,400

1 , 500*

4,500

5,200

5,700

3,700

5,400

2,600

2,800

3,500

3,000

115,150

3,715

+768

Feb.

3,000

2,750

3,600

2,400

1.800

5,000

2,900

*4.600

3,800

3,700

2,700

2,100

3,100

3,500

5,800

5,550

5,100

2,350

1,850

5,800

4,200

2,200

2,900

3,000

2,700

2,300

3,900

3,900

3,500

89,800

5,097

-879

Mar.

5,400

5,700

3,200

2,000

4,200

4,700

5.200

5,900

5,200

5,600

2,600.

4,200

5,700

5,800

3,700

5,500

5,400

1,900

3,500

2,500

3,800

5, 1'OO

3,500

5,600

2,900

5,200

5,000

2,800

5,100

3,600

1 , 650

104,150

5,360

-975

Apr.

g510

3,200

3,200

4,500

10,000

g!8,200

g20,500

616,600

g!2,600

gl 1,300

gl 1,900

g!5,200

g!7,300

g!6,800

g!5,200

g!9,400

33,300

*35,000

28,400

25,800

19,000

15,500

15,000

16,900

15,000

14,000

12,500

16,200

51,900

59 , 9OO

510,810

17,050

+2,908

May

57.000

54,100

53,500

32,600

31,700

29,400

26,100

25,500

20,500

19,200

20,000

19,600

20,000

22,600

24,700

23,000

20 , 500

18,200

13,600

11,700

*9,260

11,000

10,500

9,950

8,950

7.740

11,700

30 , 200

25,500

19,400

13,600

658,900

20,610

+1,577

June

13,900

14,100

17,500

19.200

14,500

15,100

12,100

11,400

7,100

5,400

8,600

8,OOO

7,200

5,800

5,600

5,100

2,450

5,230

3,140

3,560

3,750

2,850

1,850

1,260

5,320

3,260

3,550

5,690

4,850

g536

205,636

6,855

+374

July

g422

2,900

5,000

600

5,500

4,200

2,800

610

7,200

8,100

8,100

6,000

5,000

8.200

6.4OO

7,400

5,200

5,600

4,800

3,500

2,500

1,750

3,500

3,900

3,500

5,800

4,000

3,600

1,100

3,900

*2,700

127,782

4,122

-107

Aug.

2,200

2,300

2,400

800

510

1,950

2,100

1,600

1,800

1,500

850

940

1,900

1.-150

2,000

2,050

2,200

550

6181

2.O5O

2,050

1,900

1,700

1,600

g425

g550

1,680

2,490

2,500

2,450

4.510

52,232

1,685

-218

Sept.

6,420

3,590

4,100

6,550

5,640

3,780

4,500

2,370

*1,480

2,860

3,070

2,600

2,830

2,160

1.060

1,240

4,110

5,800

4,310

4,250

5,920

3,800

2,870

7,680

7.800

6,330

5,200

5,000

3,020

1,100

121,440

4,048

+37.5

Adjusted for change in reservoir contents

Mean 

Cf sin 

In.

2,149 

0.525 

0.61

5,659 

1.58 

1.54

Calendar year 1955: 

Water year 1955-56;

1,972 

0.482 

0.56

4,482

1.10 

1.26

2,217 

0.542 

0.58

2,585 

0.585 

0.67

19,930 

4.87 

5.44

22,190 

5.42 

6.25

Observed

Max 49,400 Min 166 Mean 6,689 

Max 39,900 Min 187 Mean 6,158

7,229 

1.77 

1.97

4,015 

0.981 

1.13

1,467 

0.359 

0.41

4,085 

0.998 

1.11

Adjusted

Mean 6,745 C"sm 1.65 in. 22.38 

Mean 6,474 c"sm 1.58 In. 21.53

Peak discharge (base. 54.OOP efs). Apr. 17 (8 to 8:50 p.m.) 55.500 efs (16.26 ft); Apr. 50 f6:3O 

p.m.) 40,900 cfs (17.62 ft).

* Discharge measurement made on this day.

t Ghange in contents, equivalent in cubic feet per second, In First Connecticut and Second Connecticut Lakes, Lake Francis, Comerford Station Pond, Moore Reservoir, and Union Village Reservoir 

and, prior to April, dead storage in Moore Reservoir.

a No gage-height record; discharge estimated on basis of weather records, recorded range in stage, 

power-plant records, and records for White River at West Hartford.

g Computed from twice-daily wire-weight-gage readings.

Note. Doubtful or no gage-height record Jan. 27 to Mar. 31, Apr. 2-5, 21-28, June 9-16, July 2 to 

Aug. 18, Aug. 20-24; discharge estimated on basis of twice-daily wire-weight-gage readings, weather 

records, powerplant records, and records for White River at West Hartford. Sbage-discharge relation 

affected by ice Nov. 27, Dec. 7, 10, 11, 17, 20-27, Dec. 29 to Mar. 31.
CONNECTICUT RIVER BASIN 169

Mascoma River at West Canaan, N. H.

Location. Lat 43°39'00", long 72°04'50", on right bank 45 ft downstream from Boston and 

Maine Railroad bridge, 0.9 mile east of West Canaan, Grafton County, 1.2 miles downstream from Indian River, and 3^ miles west of Canaan.

Drainage area. 80.5 sq mi.

Records available. July 1939 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 835 ft (from topographic m?p).

Average discharge. 17 years, 124 cfs.

Extremes.--Maximum discharge during year, 1,630 cfs Apr. 30 (gage height, 5.98 ft); minimum, 8.8 cfs Aug. 17-19.

1939-56: Maximum discharge, 3,780 cfs Mar. 27, 1953 (gage height, 8.94 ft), from 

rating curve extended above 1,900 cfs on-basis of slope-area determination at gage 

height 9.6 ft; minimum, 3.3 cfs Aug. 3, 4, 1953.

Flood in September 1938 reached a stage of 9.6 ft, from flood-marks (discharge, 

4,310 cfs, from rating curve extended above 1,900 cfs as explained above).

Remarks.--Records good except those for periods of ice effect, which are fair.

Rating table, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.2

1.5 

2.0

2.5 

3.0 

4.0 

5.0 

6.0

215

334

635

1,070

1,640

Discharge, in cubic feet per second,, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18 

19

2O

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Oct.

30

26

21

*18

18

17

76

70

55

40

33

28

25

23

42

52

133

224 

1O8

80

66

59

49

47

68

64

59

57

53

49 

173

1,863

6O.1

0.747

0.86

Nov.

179

138

108

124

474

451

*258

224

184

151

145

164

149

133

130

118

145

125 

10O

91

86

79

74

85

84

68

63

63

56

48

4,297

143

1.78

1.99

Dec.

44

37

40

41

*42

38

33

40

38

37

37

34

35

35

36

35

33

35 

33

27

24

22

21

23

26

25

24

23

22

23 

23

986

31.8

0.395

0.46

Jan.

22

21

21

22

23

24

24

23

70

370

420

410

450

250

19O

150

120

95 

85

82

81

73

65

59

56

54

57

50

42

46 

45

3,50O

113

1.4O

1.62

Feb.

44

43

43

38

43

*43

45

45

46

46

45

43

43

43

41

39

39

43 

43

41

40

40

42

44

48

62

83

74

65

1,354

46.7

0.580

0.63

Mar.

58

58

53

53

50

50

52

51

52

52

50

*53

52

52

50

47

51

52 

51

50

49

49

52

50

48

48

48

47

47

46

46

1,567

50.5

0.627

0.72

Apr.

46

48

60

85

190

360

490

407

314

253

239

324

393

407

350

407

*762

738 

614

475

424

421

404

344

314

352

326

541

1,190

1^560

12,838

428

5.32

5.93

May

1,140

746

702

710

66O

568

499

415

339

352

350

289

286

289

294

' 237

237

*192

171

156

140

122

114

118

99

91

498

1.210

518

342

324

12,208

394

4.89

5.64

June

26O

2O4

310

387

248

198

164

135

113

112

1OO

84

72

64

57

52

48

*41 

37

34

33

33

30

36

66

57

40

42

34

30

3,121

104

1.29

1.44

July

26

24

22

19it

41

65

44

59

111

61

42

39

338

550

160

133

98 

75

60

51

47

47

45

45

52

44

36

30

26

24

2,228

71.9.

0.893

1.03

Aug.

22

21

18

17

16

*15

14

14

13

12

12

11

11

10

9.9

9.4

8.8

8.8 

10

11

10

12

12

11

14

13

12

11

*9.7

 9.4

13

391.0

12.6

0.157

0.18

Sept.

26

21

31

24

17

15

23

24

18

15

14

14

14

14

14

14

38

185 

72

53

64

48

39

246

242

108

76

60

50

44

1,623

54.1

0.672

0.75

Calendar year 1955: Max 1,580 Min 9.3 Mean 116 cfsm 1.44 in. 19.64

Water year 1955-56: Max 1,560 Min 8.8 Mean 126 cfsm 1.57 in. 21.25

Peak discharge (base. 950 cfs).--Apr. 3O (1:3O to 2 p.m.) 1,630 cfs (5.98 ft); May 28 (4 a. 

1,540 cfs (5.84 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 23, Nov. 27 to Apr. 7.
170 CONNECTICUT RIVER BASIN

Mascoma River at Mascoma, N. H.

Location.--Lat 43°39'00", long 72°11'05", on left bank at Mascoma, Grafton County, 250 ft 

downstream from railroad bridge and 1,000 ft downstream from outlet of Mascoma Lake.

Drainage area.--153 sq mi.

Records available. August 1923 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 740 ft (from topographic map).

Average discharge.--33 years, 219 cfs (adjusted for storage since October 1928).

Extremes.--Maximum discharge during year, 1,830 cfs May 1 (gage height, 4.19 ft); minimum 

daily, 44 cfs Sept. 1, 2, 22. ....

1923-56: Maximum discharge, 5,840 cfs Mar. 19, 1936 (gage height, 7.50 ft), from 

rating curve extended above 2,500 cfs on basis of computations of flow over dams at 

gage heights 6.85 and 7.50 ft; minimum daily, 2 cfs Feb. 3, 1929, Sept. 1, 1940.

Remarks. Records excellent. Flow regulated by Mascoma and Crystal Lakes and Goose and 

Grafton Ponds (see p. 230).

Revisions (water years). WSP 726: Drainage area. WSP 801; 1925(M).

Rating tables, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

Oct. 1 to May 1 May 2 to Sept. 3O

0.5 43

1.0 110

1.5 223

2.0 396

3.0 900

4.2 1,840

0.5 42

.7 65

1.0 114

1.5 241

2.0 412

3.0 900

4.1 1,750

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

(t)

Oct.

115

115

115

*114

115

115

115

117

119

119

119

119

119

119

94

*59

123

124

128

T28

128

128

126

124

123

123

123

121

119

119

110

3,635

117

-22.8

Nov.

107

108

110

115

101

51

*130

121

114

117

119

121

124

123

124

134

164

194

186

176

171

171

171

169

166

157

142

142

142

140

4,110

137

+118

Dec.

138

138

138

138

136

*136

134

132

132

130

128

126

124

123

121

121

119

124

134

132

128

126

124

123

123

121

121

121

121

119

119

3,950

127

-75.3

Jan.

119

119

119

124

132

130

130

130

*132

117

110

115

115

172

285

338

263

212

196

194

191

191

186

184

181

178

174

171

169

166

162

5,205

168

+32.0

Feb.

166

174

171

166

162

160

*160

160

164

162

160

160

160

162

171

176

178

178

178

178

184

188

186

186

184

184

184

186

207

5,035

174

-100

Mar.

235

238

232

229

244

259

253

244

235

229

220.

215

*210

204

199

196

194

186

184

178

176

174

171

169

166

164

162

160

157

155

153

6,191

200

-133

Apr.

153

150

150

157

174

212

263

353

450

543

525

512

552

605

635

*650

758

*949

1,060

1,010

907

746

580

620

570

520

548

585

971

1.610

17,518

584

+250

May

*1..800

1,700

1,480

1,300

826

570

506

470

562

482

412

405

412

329

350

379

368

*350

325

285

253

253

250

221

204

166

101

998

1,430

892

385

18,464

596

+95.5

June

332

364

653

571

346

322

319

253

212

204

198

198

198

198

196

193

188

185

182

162

134

*123

72

81

132

132

132

132

123

72

6,607

220

-46.2

July

eo

114

114

114

114

1C 4

T5

1C 8

110

112

112

ICOei

3£6

431

263

212

1S8

1£6

ISO

185

ieo

136

134

132

117

72

82

l^R l<:o

4,540

146

-26.8

Aug.

121

121

*102

53

64

99

95

95

95

97

79

58

99

99

99

97

88

52

61

97

97

97

95

90

75

*51

92

90

89

87

77

2,711

87.5

-84.3

Sept.

44

44

58

90

90

89

89

75

51

92

90

90

89

79

46

53

85

85

87

87

77

44

57

95

99

104

106

104

1O6

104

2,409

80.3

+9.76

Adjusted for change in reservoir contents

Mean 

Cf sm 

In.

94.4 

0.617 

0.71

25E 

1.67 

1.86

Calendar year 1955: 

Water year 1955-56:

52.1 

0.341 

0.39

200 

1.31 

1.51

73.5 

0.480 

0.52

67.0 

0.438 

0.51

834 

5.45 

6.08

691 

4.52 

5.21

Observed

Max 1,550 Min 51 Mean 227 

Max 1,800 Min 44 Mean 220

174 

1.14 

1.27

1?0 3.19 o.ieq 0.021

O.fo) 0.02

90.1 

0.589 

0.66

Adjusted

Mean 216 Cfsm 1.41 In. 19.18 

Mean 221 Cfsm 1.44 In. 19.64

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Mascoma and Crystal Lakes and Goose 

and Grafton Ponds.
CONNECTICUT RIVER BASIN 171

Ottauquechee River at North Hartland, Vt.

Location.--Lat 43°36'05", long 72°21'20", on left bank 300 ft upstream from highway bridge 

at North Hartland, Windsor County, 1 mile upstream from mouth.

'Drainage area. 221 sq ml. 

Records available. October 1930 to September 1956.

Gage.--Water-stage recorder. Datum of gage Is 336.77 ft above mean sea level, datum of 

T929 (levels by Corps of. Engineers).

Average discharge.--26 years, 402 cfs.

Extremes. Maximum discharge during year, 7,390 cfs Apr. 30 (gage height, 9.4? ft); maximum gage height, 10.62 ft Jan. 13 (ice jam); minimum discharge, 31 cfs Sept. 6; minimum 

daily, 67 cfs Aug. 29.

1930-56: Maximum discharge, 24,400 cfs Sept. 21, 1938 (gage height, 17.68 ft), from 

rating curve extended above 6,200 cfs on basis of computations of flow over dams at 

gage heights 15.58, 17.68, and 21.5 ft; minimum, 2.9 cfs July 31, 1933; minimum daily, 

3.8 cfs July 3, 1933.

Maximum stage known, 21.5 ft in November 1927, from floodmarks (discharge, 30,400 

cfs, by computation of peak flow over dam).

Remarks. Records excellent except those for periods of ice effect or no gage-height record, which are fair. Plow regulated by powerplants above station. Small seasonal 

storage in reservoir at Plymouth.

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Apr. 5 Apr. 6 to Sept. 30

2.0 58

2.5 130

3.0 262

3.5 447

4.0 685

4.5 970

5.0 1,360

6.0 2,420

2.0 

2.3 

2.6 

3.0 

3.5

58

95

158

274

465

4.0 

4.5 

5.0 

7.0 

9.0

695

970

1,360

3,680

6,700

Discharge, In cubic feet per second, water year October 1955 to September 19"56

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

ZZ

23

24

Z5

26

27

28

29

30

31

Total 

Mean

Of sm

In.

Oct.

88 

92

95

80

68

80

378

282

*214

151

126

123

119

108

336

610

797

892

575

447

353

352

309

292

423

394

348

309

282 

269

1 , 590

10,382 

335

1.52

l.H

Nov.

997 

670

*545

663

1.150

1,080

946

862

718

620

630

655

620

605

590

545

734

625

535

504

464

443

375

418

406

348

298

330

285 

250

17,031

596

c.70

3.01

Dec.

240 

225

255

260

282

*259

175

230

205

200

180

200

190

180

180

160

150

170

165

135

115

130

125

120

125

135

130

120

115 

110

105

5,371 

173

0.783

0.90

Jan.

100 

97

94

100

110

115

110

100

175

1,050

a900

*a 1,000

1.200

700

400

310

270

240

220

200

190

180

170

160

150

145

140

130

125 

125

125

a, 131 

295

1.33

1.54

Feb.

110 

120

125

110

110

135

*125

125

125

120

120

125

130

125

125

125

120

120

120

115

110

110

110

110

120

170

210

190

150

3,710 

128

0.579

0.62

Mar.

125 

130

140

160

150

135

135

135

130

135

140

140

*150

140

135

130

125

130

135

135

135

135

150

155

135

140

140

150

155 

\ff155

4,340 

140

0.633

0.73

Apr.

155 

160

195

350

900

1,500

1,300

1,000

850

720

900

1,200

1,300

1,070

940

1,910

*3,340

2,140

1,600

1,320

1,200

1,170

1,080

904

874

952

930

2,090

4,8-^ 

5.900

42 , 800 

1,427

6.46

7.20

May

5.01O 

2,210

2,120

2,090

1,850

1,560

1,320

1,110

922

1,170

1,100

952

984

916

770

695

705

609

555

524

*461

426

426

426

363

344

876

\.&3°

817 

670

710

32,121 

1,036

4.69

5.41

June

645

573

1.990

1,590

998

886

710

596

532

550

675

519

439

378

326

294

271

a240

a210

a!80

a!90

*192

171

198

206

176

153

161

148 

148

14,345 

478

2.16

2.41

July

132 

124

94

94

106

166

209

a!75

a200

a250

a220

a200

a225

820

392

279

357

241

174

156

145

154

166

261

233

iMZ35

188

156 

136

127

6,859 

221

1.00

1.15

Aug.

119

115

*103

91

89

84

79

75

74

78

73

70

69

76

80

79

88

68

83

97

90

92

*85

80

82

80

84

70

67 

69

131

2,620 

84.5

0.382

0.44

Sept.

158 

212

355

147

109

81

172

121

108

101

92

90

89

85

7J3

117

492

578

298

330

395

256

251

1.760

73XX

483

386

333

294 

261

8,962 

299

1.35

1.51

Cpiendar year 1955: Max 4,000 Mln 11 Mean 414 cfsm 1.87 In. 25.46

Water year 1955-56: Max 5,900 Min 67 Mean 433 cfsm 1.96 In. 26.67

7,390 cfs (9.42 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement, weather records, 

recorded range In stage when available, and records for White River at West Hartford anc? Black River 

at North Springfield.

Note. Stage-discharge relation affected by Ice Nov. 29 to Dec. 4, Dec. 7 to Apr. 12.
172 CONNECTICUT RIVER BASIN

Sugar River at West Claremont, N. H.

Locatlon.--Lat 43°23'15", long 72°21'45", on right bank 0.2 mile downstream from Redwater 

Brook at West Claremont, Sullivan County.

Drainage area. 269 sq ml.

Records available. May 1928 to September 1956. Published as "at Claremort" prior to October 1928.

Gage. Water-stage recorder. Datum of gage Is 358.78 ft above mean sea level, datum of 

19S9 (levels by Corps of Engineers). Prior to Oct. 1, 1928, chain gage at site 

0.8 mile upstream at different datum.

Average discharge. 28 years, 403 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 5,150 cfs Apr. 29 (gage height, 6.27 ft); minimum dally, 61 cfs Aug. 16.

1928-56: Maximum discharge, 14,000 cfs Mar. 19, 1936 (gage height, 10.92 ft), from 

rating curve extended above 6,700 cfs on basis of computations of flow over dam at gage 

heights 10.49 and 10.92 ft; maximum gage height, 11.80 ft Mar. 12, 193f (Ice Jam); minimum dally discharge, 30 cfs Sept. 26, 1948.

Remarks. Records excellent except those for periods of ice effect and dovbtful or no gagehelght record, which are fair. Flow regulated by mills above station end by Sunapee 

Lake (see p. 230).

Revisions (water years) . WSP 711: 1930(M). -WSP 756: Drainage area.

Rating table, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.1 

1.3 

1.6 

2.0 

2.5

86

175

325

565

3.0 

4.0

5.0 

7.0

885

1,750

3,020

6,540

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22\

23

24

25

26

27

28

29

30

31

Total

M°an

(t)

Oct.

102

91

97

86

81

91

178

257

223

182

143

125

113

113

339

474

827

803

536

448

345

277

238

231

*325

309

277

245

220 

213

623

8,612

278 -.a-i 2

Nov.

730

524

407

520

1.990

1,720

1,230

1,060

864

685

667

750

737

789

878

776

822

692

577

518

480

453

407

435

444

399

369

373

330

 

20,926

698

-1.54

Dec.

280

260

280

290

510

290

220

250

230

230

200

185

185

175

180

160

160

165

165

135

130

135

130

130

130

140

130

120

115 

110

110

5,730

185

-49.3

Jan.

105

100

105

105

105

110

105

100

800

2.500

1,800

1,500

1,700

1,000

650

500

400

360

330

300

290

260

240

230

210

205

200

195

190

" 

185

14,865

480

+44.4

Feb.

180

180

190

190

195

195

202

202

202

202

202

199

195

195

195

*195

195

195

199

199

195

185

180

180

200

270

320

290

250

5,977

206

-24.7

Mar.

230

210

230

270

260

250

240

235

230

230

230

235

240

240

235

225

210

220

225

230

*245

255

260

250

240

230

230

225

225 

230

230

7,295

235

-31.7

Apr.

240

260

300

450

900

1,450

1,650

1,300

1,050

900

1,000

1,300

1,550

1,700

1,480

2,800

4,200

3,000

2,300

1,900

1,600

1,750

1,600

1,400

*1,260

1,400

1,280

2,350

4,660 

4 . 820

51,850

1,728

+140

May

3,480

2,600

2,340

2,240

2,140

1,790

1,550

1,350

1,160

1,160

1,040

915

878

763

679

631

613

553

512

416

365

337

337

373

325

301

665

1,540

1,020 

*802

750

33,625

1,085

+7.84

June

643

553

1.100

1,080

770

625

518

458

444

444

607

480

407

361

321

269

249

223

199

182

169

156

143

146

159

143

143

156

153 

125

11,426

381

-21.2

July

128

128

108

110

105

*146

169

146

159

220

209

182

216

600

474

333

329

277

216

178

146

143

156

146

140

140

149

128

119 

113

100

5,913

191

-23.5

Aug.

94

89

86

84

76

86

77

77

74

77

65

72

69

65

68

61

65

61

107

97

81

84

79

77

72

70

74

68

65 

*65

74

2,359

76.1

-50.8

Sept.

70

77

94

102

89

79

91

81

81

79

72

70

65

65

63

81

*134

195

172

159

172

127

131

464

435

301

223

172

137 

125

4,206

140

-25.1

A^ lusted for change in contents in Sunapee Lake

Mean 

Cfsm 

In.

292 

1.09 

1.25

696 

2.59 

2.89

Calendar year 1955:

Water year 1955-56:

136 

0.506 

0.58

524 

1.95 

2.25

0.673 

0.73

204

U.TCR

0.87

1,869 

6.95

1,093 

4.06 

4.68

Observed

360 

1.34 

1.49

164 

0.610 

0.70

25.3 

0.094 

0.11

Adjusted

HE 

0.428 

0.48

*Iax 4,840 Min 56 Mean 427 Mean 424 Cfsm i.st, In> zl 42

lax 4,820 Min 61 Mean 472 Mean 470 Cfsm 1.75 *.,. 23i78

Peak discharge (base, 5,000 efs).--Apr. 17 (about 9 p.m.) about 4,500 cfs; Apr. 29 (9:30 a.m.) 

5,150 cfs (6.27 ft).

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Sunapee Lake.

Note.--Doubtful or no gage-height record Dec. 22 to Apr. 26; discharge estimated on basis of recorder graph, 4 discharge measurements, weather records, and records for Cold River at Drewsvllle, 

N. H., Black River at North Springfield, Vt., and Saxtons River at Saxtons River, vt. Stagedischarge relation affected by ice Nov. 29 to Jan. 10, Jan. 15 to Feb. 6, Feb. 22 to Apr. 3.
CONNECTICUT RIVER BASIN 173

Black River at North Springfield, Vt.

Location. Lat 43°20'00", long 72 "30 "55", on right bank at North Spriflgf ie'd , Windsor 

County, 1,300 ft upstream from Great Brook.

Drainage area. 158 sq mi.

Records available.--October 1929 to September 1956. tctober 1929 monthly discharge only, 

published in WSP 1301.

Gage. Water-stage recorder. Datum of gage is 445.79 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers).

Average discharge.--27 years, 286 cfs.

Extremes. Maximum discharge during year, 5,500 cfs Apr. 29 (gage height, 10.51 ft); minimum not determined; minimum daily, 23 cfs Aug. 18, 29.

1929-56: Maximum discharge, 15,500 cfs Sept. 22, 1938 (gage height, 17.63 ft), from 

rating curve extended above 3,200 cfs on basis of computations of flow over dams at 

gage heights 16.41 and 17.68 ft; minimum daily, 10 cfs Oct. 17, 1937.

Remarks. Records excellent except those for periods of ice effect or no gage-height record, which are fair. Flow regulated by mills above station.

Revisions (water years).--WSP 756: Drainage area. WSP 781: 1931(M), 1934(M).

Rating tables, water year 1955-56, except period of Ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Apr. 28 Apr. 29 to Sept. 30

2.1 

2.5 

3.0 

4.0 

6.0 

8.0

45

100

205

535

1,560

3,040

1.9 21

2.2 53

2.5 97

3.0 205

4.0 535

6.0 1,560

8.0 3,040

10.0 4,940

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf sm

In.

Oct.

56

58

51

52

51

59

336

178

141

93

83

73

79

72

852

845

1,720

1,120

885

595

450

380

314

296

*344

320

311

281

260

260

1,810

12,425

401

2.54

2.92

Nov.

865

664

519

738

1,410

1,110

860

780

607

515

527

559

523

692

651

527

579

470

411

383

355

327

299

341

314

275

242

215

150

155

16,063

535

3.39

3.78

Dec .

140

135

150

155

17_Q

150

120

*145

135

135

125

125

125

120

125

110

110

125

110

90

80

92

88

86

90

94

90

85

80

80

80

3,545

114

0.722

0.83

Jan.

80

69

79

74

78

82

74

70

330

1.000

750

700

800

500

300

240

200

180

165

150

140

130

120

115

110

105

100

95

92

95

90

7,113

229

1.45

1.67

Feb.

83

92

92

83

96

92

90

90

90

90

90

95

100

97

95

*96

92

90

90

88

86

85

84

84

95

130

150

125

105

2,775

95.7

0.606

0.65

Mar.

93

100

105

115

105

100

100

100

98

97

100

105

105

100

97

95

92

95

100

100

100

110

105

100

100

99

98

98

110

110

105

3,137

101

0.639

0.74

Apr.

112

127

150

223

614

950

950

718

539

519

669

910

965

875

855

1,700

2,630

1,650

1,300

1,130

1,050

*1,030

955

760

746

820

838

1,950

3,970

4.210

33,915

1,130

7.15

7.98

May

2,560

1,660

1,620

1,640

1,450

1,280

1,160

975

810

975

965

850

835

692

567

511

474

422

330

280

256

244

251

253

219

208

473

705

531

*422

414

23,632

769

4.87

5.61

June

390

355

1.450

1,180

700

515

411

330

278

309

442

316

260

229

207

181

166

110

81

78

75

71

68

68

69

58

63

92

70

59

8,681

289

1.83

2.04

July

57

54

55

42

44

*82

100

71

105

173

110

95

154

1.070

626

352

326

215

178

140

122

120

134

122

101

102

91

75

65

69

64

5,114

165

1.04

1.20

Aug.

58

58

55

49

33

37

38

36

38

31

32

26

34

27

30

26

a28

a23

a50

a45

a40

a36

a33

a31

a30

a24

a27

a25

*23

24

34

. 1,081

34.9

0.221

0.25

Sept.

60

81

159

74

85

80

116

90

68

62

56

45

51

47

47

72

*192

275

145

211

205

157

119

616

507

308

216

178

205

148

4,675

156

0.987

1.10

Calendar year 1955: Max 2,880 Min 20 Mean 323 cfsm 2.04 In. 27.75

Water year 1955-56; Max 4,210 Min 23 Mean 334 cfsm 2.11 In. 28.77

Peak discharge (base, 5.600 cfs).--Apr. 29 (4 a.m.) 5,500 cfs (10.51 ft). 

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for Saxtons 

River at Saxtons River, Williams River at Brockway Mills, and Ottauquechee River near North Hartlanc 

Note. Stage-discharge relation affected by ice Nov. 29 to Mar. 31.
CONNECTICUT RIVER BASIN

Williams River at Brockway Mills, Vt.

Location. Lat 43 0 12'30", long 72°31'05", on left bank 25 ft upstream from highway bridge 

at Brockway Mills, Windham County, 4 miles downstream from Hall Brook, 4.6 miles upstream from mouth, and 6 miles northwest of Bellows Falls.

Drainage area. 103 sq mi.

Records available. June 1940 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 430 ft (from topographic map).

Average discharge.--16 years, 170 cfs.

Extremes.--Maximum discharge during year, 4.850 cfs Apr. 29 (gage height, 9.55 ft), from 

rating curve extended above 2,100 cfs by logarithmic plotting; minimum, 8.3 cfs 

Aug. 17, 18.

1940-56: Maximum discharge, 8,910 cfs June 1, 1952 (gage height, 13.39 ft), from 

rating curve extended above 3,300 cfs on basis of slope-area determination at gage 

height 13.31 ft; minimum not determined, occurred Dec. 11, 1941, during period of ice 

effect; minimum daily, 3.6 cfs Aug. 27, 1949.

Flood in September 1938 reached a stage of 22.7 ft, from floodmarks.

Remarks.--Records excellent except those for period of ice effect, which are fair. 

Revisions (water years). WSP 1031: 1943-44(P). WSP 1301: 1941-42(M).

Rating tables, water year 1955-56, except period of ice effect (gage 

height. In feet, and discharge, In cubic feet per second) 

(Shifting-control method used Apr. 16)

Oct. 1 to Apr. 16 Apr. 17 to Sept. 30

1.2

1.5

2.1

2.5

72

120

215

3.0 

4.0 

5.0 

7.0

359

700

1,120

2,190

0.9 

1.1 

1.3 

1.6 

2.0

7.8

14

25

53

119

2.5 

3.0 

4.0

237

390

770

1,890

3,410

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Cf sm

In.

Oct.

29

25

22 

21

20

29

206

96

69

50

43

38

34

37

797

718

1,660

739

690

419

297

232

188

178

212

*173

163

140

130 

150

1,510

9,115

294

2.85

3.29

Nov.

544

365

294

591

1,200

816

572

490

365

306

347

387

335

598

428

374

438

312

263

237

218

193

176

221

193

163

140

145

125 

110

10,946

365

3.54

3.95

Dec.

102

1OO

107

110

130

110

80

115

110

105

100

90

75

68

65

62

59

56

54

50

47

42

37

33

42

54

54

45

37 

37

36

2,212

71.4

0.693

0.80

Jan.

32

27

25 

27

34

41

40

36

240

600

425

470

400

200

140

110

90

80

73

70

65

60

55

52

50

47

45

44

43

42

42

3,705

120

1.17

1.34

Feb.

43

44

45 

46

48

47

46

46

47

47

46

46

47

46

47

47

46

46

47

47

46

44

42

41

45

65

82

70

62

1,421

49.0

0.476

0.51

Calendar year 1955; Max 1,70O Min 5.7

Mar.

55

52

57 

70

65

63

61

58

58

59

57

58

57

56

56

56

56

56

58

60

62

*66

65

58

57

56

56

55

55 

55

56

1,809

58.4

0.567

0.65

Apr.

56

65

92 

152

418

712

676

448

314

306

454

625

639

625

620

1,570

2,320

1,190

895

828

784

851

702

544

*562

573

700

1,880

*2,810 

2,600

25,011

834

8.10

9.03

Mean 190

May

1.270

1,000

1,090 

1,040

860

730

628

498

413

544

430

403

397

326

274

251

229

198

184

169

155

144

149

149

127

117

355

333

204 

*174

167

13 , 008

420

4.08

4.70

June

151

147

1.010 

498

314

240

196

162

140

180

279

169

138

119

97

81

70

60

56

53

50

53

50

48

45

41

39

48

40 

37 

4,611

154

1.50

1.66

Jul"

35

32

31 

29

28

*62

66

39

42

73

42

33

56

270

96

57

64

45

36

31

29

32

38

42

31

31

26

24

21 

19

i§

1,478

47.7

0.463

0.53

Aug.

17

17

16

15

14

14

13

13

12

12

10

10

10

10

9.4

8.9

8.6

8.6

60

33

21

18

*16

15

15

13

12

11

10

11

16

469.5

15.1

0.147

0.17

Sept.

26

24

46

25

18

16

26

23

18

16

15

15

M

16

26

33

*104

108

45

58

58

38

33

203

95

57

43

38

34 

31

1,302

43.4

0.421

0.47

Cfsm 1.84 In. 25.03

Water year 1955-56: Max 2,810 Mln 8.6 Mean 205 Cfsm 1.99 In. 27. 1O

Peak discharge (base. 2,600 efs).--0et. 31 (7 a.m.) 2,730 cfs (7.90 ft); Apr. 17 (l a.m.) 3,250 

cfs (7.80 ft); Apr. 29 .(la.m.) 4,85O cfs (9.55 ft). 

* Discharge measurement made on this day. 

Note.--Stage-discharge relation affected by ice Nov. 29 to Apr. 3.
CONNECTICUT RIVER BASIN n 

Saxtons River at Saxtons River, Vt.

Location. Lat 43°08'15", long 72°29'15", on right bank 130 ft upstream from highway 

bridge, 08 mile east of Saxtons River, Windham County, 1.4 miles upstream from Bundy 

Brook, and 3.9 miles upstream from mouth. y

Drainage area.--72.2 sq mi.

Records available.--June 1940 to September 1956.

Gage..--Water-stage recorder. Altitude of gage is 390 ft (from topographic map).

Average discharge.--16 years, 131 cfs.

Extremes. Maximum discharge during year, 3,080 cfs Oct. 31 (gage height, 8.72 ft) from 

rating curve extended above 1,800 cfs on basis of slope-area determinations at gage 

heights 10.51 and 11.37 ft; minimum, 4.6 cfs Aug. 18; minimum daily, 4.8 cfs Aug. 18. 

1940-56: Maximum discharge, 5,430 cfs June 1, 1952 (gage height, 11.37 ft), from 

rating curve extended above 1,800 cfs as described above; minimum, 1.9 cfs July 25 

1949; minimum daily, 2.4 cfs Aug. 6, 1955.

Flood in September 1938 reached a stage of 17.9 ft, from floodmarks.

Remarks.--Records excellent except those for periods of Ice effect, which are fair Occasional diurnal fluctuation at low flow caused by sawmill above station; fluctuation 

more frequent prior to 1946.

Revisions (water years).--WSP 1301: 1948-49(M).

Rating babies, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Apr. 16 Apr. 17 to Sept. 3O

2.3

2.4 

2.7 

3.0 

3.5

11

16

40

76

16O

4.O 276

5.0 620

6.0 1,1OO

7.0 1,750

2.1

2.2 

2.4

4.8

7.7

16

Note. Same as 

preceding table 

above 2.4 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Ocb.

20

16

13

12

11

20

140

77

59

40

32

27

25

25

601

693

1.510

552

547

310

214

164

137

132

158

*132

128

111

103

131

1,50O

7,64O

246

3.41

3.94

Nov.

442

276

216

503

1,020

708

494

414

304

250

284

307

284

643

418

350

407

279

232

211

193

174

156

180

162

141

127

128

113 

100

9,516

317

4.39

4.90

Dec.

94

90

92

JOO

110

*97

80

95

90

90

80

70

65

60

55

52

50

48

45

43

40

36

32

27

43

50

45

37

29 

29

29

1,903

61.4

0.850

O. 98

Jan.

27

22

21

26

32

35

32

29

230

500

360

400

360

156

116

85

75

65

60

59

54

50

46

43

41

39

37

36

36 

35

35

3,142

101

1.40

1.62

Feb.

35

35

36

38

40

40

39

38

39

39

39

38

39

39

39

39

39

38

38

39

39

39

*3B

37

43

60

70

55

50

1,197

41.3

O.572

0.62

Calendar year 1955: Max 1,510 Mln 2.4

Mar.

45

42

48

58

50

48

47

47

46

45

45

44 "45

46

46

45

44

44

44

48

50

*51

51

46

45

44

43

43

43 

44

45

1,432

46.2

0.640

0.74

Apr.

46

51

7O

130

360

526

488

307

216

228

344

467

477

491

459

1,260

1,510

816

604

533

502

548

463

350

359

366

416

1,150

*1,570 

1,670

16,777

559

7.74

8.64

Mean 139

May

758

584

620

596

516

421

366

293

250

319

263

258

279

228

189

176

154

137

127

118

106

98

104

104

87

82

170

170

*125 

108

104

7,91O

255

3.53

4.07

June

96

89

616

313

198

152

125

104

90

118

184

114

89

73

61

52

46

40

36

35

33

34

3O

29

28

24

26

31

25 

22

2,913

97.1

 1.34

1.50

July

20

17

16

16

15

47

*47

28

30

40

27

20

32

133

57

36

29

25

20

17

16

23

23

24

19

16

14

13

11 

9.8

 

850.3

27.4

0.380

O.44

Aug.

9.4

9.1

8.4

8.4

8.4

8.0

7.7

7.7

6.5

6.2

5.9

5.9

8.4

8.4

7.1

5.9

5.4

4.8

43

26

15

14

11

9.4

9.1

7.7

6.8

6.2

5.6

5.9

11

3C2.3

?.75

0.135

0.16

Sept.

16

*17

3O

17

12

9.4

10

12

9.1

7.7

7.4

7.7

7.7

10

24

28

51

53

29

43

*42

26

22

1O5

59

36

28

24

21 

19

783.0

26.1

0.361

O.40

Cfsm 1.93 In. 26.13

Water year 1955-56: 1955-56; Max 1,670,670____Mln Mln4.8.8_____Mean Mea14949_____Cfsm Cfs2.O6 In. 28.8.Ol_________ Ol

Peak discharge (base, 1.750 cfs).--Oct. 17 (11:30 a.m.) 2,13O cfs (7.54 ft); Oct. 31 (6 a.m.) 

,080 cfs (8.72 ft); Apr. 16 (1O:30 p.m.) 2,450 cfs (7.94 ft); Apr. 29 (12:30 a.m.) 2,620 OfS (8.15

"r\ .

3,--

ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 30 to Jan. 13, Jan. 16-26, Jan. 3C to Mar. 13

.« T<=.?? ?4-?9. Mar. 31 to Acr. 5.
176 CONNECTICUT RIVER BASIN

Connecticut River at North Walpole, N. H.

Location. Lat 43° 07'35", long 72° 26'15", on left bank at North Walpole, Cheshire County, 

100 ft upstream from Saxtons River and 0.7 mile downstream from Vllas Bridge between 

Bellows Falls, Vt., and North Walpole, N. H. Records Include flow of Saxtons River.

Drainage area.--5.493 sq ml, Includes that of Saxtons River.

Records available. March 1942 to September 1956.

Gage. Water-stage recorder. Datum of gage Is 218.63 ft above mean sea level, datum of 

1929.

Average discharge . 14 years, 9,552 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 66,700 cfs Apr. 30 (gage height, 23.99 ft); 

minimum dally, 222 cfs Oct. 2.

1942-56: Maximum discharge, 97,000 cfs Mar. 27, 1953 (gage height, 30.37 ft); 

minimum dally, 115 cfs Aug. 31, 1952.

Maximum stage known, 43.8 ft Mar. 19, 1936, from floodmarks.

Remarks. Records excellent except those for periods of Ice effect or doubtful gageHeight record, which are good. Flow regulated by powerplants and by First Connecticut 

and Second Connecticut Lakes, Lake Francis, Moore Reservoir, and Comerford Station 

Pond (see p. 230), and other reservoirs (combined usable capacity, abo-it 19| billion 

cubic feet).

Rating table, water year 1955-56, except periods of ice effect (ga^e 

height, In feet, and discharge, In cubic feet per second)

4.0 202 7.0 4,230

4.5 488 1O.O 11,700

5.0 930 15.0 28,500

5.5 1,510 20.0 48,700

6.0 2,270 S5.0 71,200

Discharge, In cubic feet per second, water year October 1955 to Septemter 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

2324*

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

746 

222

2,660

2,790 

2,310

2,700

5,140

3,490

2,370

4,160

3,650

2,400

3,480

5,800

4,680

5,250

9,300

7,690

6,490

6,020

5,200

2,070

2,010

4,260

4,660

*5,120

5,520

5,730

4,660 

3,260

11,300

135,138

4,359

-234

Nov.

11,700 

10,900

7,890

8,580 

15,200

15.900

12,900

12,100

11,400

8,210

10, 900

9,320

7,810

7,880

8,820

10,200

8,640

10,500

9,790

5,560

7,190

6,690

7,630

3,590

6,990

6,830

2.250

5,800

5,500

5,000

261,650

8,722

+1,056

Dec.

4,480 

4,330

3,080

4,010 

5,490

*5.560

4,610

3,270

3,780

2,420

1,770

4,470

3,890

4,080

3,910

4,040

2,000

1,180

4,370

3,300

3,430

3,040

2,280

1,300

488

1,350

3,600

3,350

3,000

1J750

100,428

3,240

-519

Jan.

600 

1,250

2,500

2,800 

2,800

2,700

1,450

540

5,000

10,500

15,500

15,000

18 , 500

14,500

11,500

8,010

7,490

5,820

5,450

5,200

3,760

2,470

5,500

4,790

4,350

4,890

4,780

4,060

2,540

4,620

4,550

183,420

5,917

+844

Feb.

3,980 

3,600

4,000

3,800 

1,920

4,770

4,140

4,030

5,200

4,940

3,620

3,700

3,920

4,210

4,450

4,600

4,930

3,780

1.760

4,810

4,870

3,000

4,210

4,260

3,600

3,190

4,810

5.780

5,170

119,050

4,105

-1,004

Mar.

4,690 

4,800

5,400

2,570 

5,900

6.100

5,940

5,900

4,130

4,600

3,570

5,000

5,600

5,200

5,000

5,120

3,900

L.900

5, 800

3,300

4,400

*4,300

4,700

4,500

3,300

4,500

4,800

4,030

4,460

4,270

2,820

140,500

4,532

-1,139

Apr.

2.090 

4,100

4,090

6,480 

11,000

25,800

30,200

25,200

18,300

16,300

18,900

22,900

26,500

24,700

23,800

29,200

51, 700

49,2OO

42,000

34,300

29,700

24,500

23,100

23,200

22,000

21,300

18,900

*26,100

52,300 

65 , 800

771,660

25,720

+3,298

May

57.500 

47,400

44, 5OO

43,700 

41,700

38,000

34,100

30,200

26,200

24, 700

25,300

24,700

24,300

25,700

27,900

27,200

24,800

21,600

17,900

13,900

12,100

11,600

11,700

12,200

11,600

11, 500

8.800

33,200

*32,100 

25,500

18,300

809,900

26,130

+1,680

June

15,600 

17,000

23,600

28.400 

20,900

16,100

15,000

13,800

12,500

5,070

10,100

11, 100

9,810

9,570

7,400

6,06o'

2,960

3,970

4,700

3,730

4,240

4,450

2,020

1.500

4,170

5,120

4,770

4,840

5,570 

1,760

275,810

9,194

+307

July

732

3,820

3,400

803 

4,340

5,350

2,050

*1,680

5,900

9,090

8,800

8,760

5,920

8,790

12 . 900

8,520

7,630

6,590

7,030

5,100

3,670

1,780

3,470

4,290

4,890

4,760

5,670

5,200

772 

4,100

3,150

158,957

5,128

-160

Aug.

3,580 

3,620

2,360

478 

310

2,170

2,630

2,650

2,810

2,280

630 '510

2,580

1,160

2,310

2,020

3,070

658

476

2,640

2,480

2,320

2,160

2,300

559

596

2,350

2,920

2,990 

2, 810

5.160

65,587

2,116

-353

Sept.

5,820 

3,800

4,730

7,550 

*6,340

4,340

5,350

2,240

1,670

4,200

3,430

3,330

3,310

1,610

1,630

1,080

5,920

7,070

6,520

5,450

*6,520

6,250

2,360

7,850

12.400

10,500

6,450

7,060

3,460 

637

148,877

4,963

+22.1

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

4,125 

0.751 

0.87

9,778 

1.78 

1.99

Calendar year 1955: 

Water year 1955-56:

2,721 

0.495 

0.57

6,761 

1.23 

1.42

3,101 

0.565 

0.6L

3,393 

0.618 

0.71

29,020 

5.28 

5.89

27,810 

5.06 

5.84

Observed

Max 63,900 Min 152 Mean 9,028 

Max 63,800 Min 222 Mean 8,664

9,500 

1.73 

1.93

4,968 

0.904 

1.04

1,763 

0.321 

0.37

4,985 

0-.908 

1.01

Adjusted

Mean 9,069 Cfsm 1.65 In. 22.42 

Mean 8,978 Cfsn. 1.63 In. 22.25

Peak discharge (base, 44.000 efs). Apr. 17 (6:30 p.m.) 54,400 cfs (21.26 ft); Apr. 30 (3:30 to 

6 p.m.) 66,700 cfa (23.99 ft).

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, In First Connecticut and Second Connecticut Lakes, Lake Francis, Moore Reservoir (dead storage October to March, Hv3 storage thereafter), Comerford Station Pond, Union Village Reservoir, 4 reservoirs in Hascoma River basin, and 

Sunapee Lake.

Note.--Stage-discharge relation affected by ice Dee. 17, 24, Dec. 26 to Jan. 15 (no gage-height 

re'cord Dec. 27 to Jan. 11; discharge estimated on basis of weather records, recorded range in stage, 

powerplant records, and records for Saxtons River at Saxtons River, Vt). Doubtful gage height record Feb. 2-4, 9, 12, 16, 25, Mar. 2, 3, 5, 6, 10, 12-15, 17, 19-27; discharge computed on basis of 

recorded graph, powerplant records, and records for Saxtons River at Saxtons Rive", Vt.
CONNECTICUT RIVER BASIN 177

Cold River at Drewsville, N. H.

Location.--Lat 43°07'55", long 72°23'25", on left bank 50 ft upstream from bridge on 

State Highway 101 at Drewsville, Cheshire County, 1.0 mile upstream from Great Brook, 

2.7 miles east of Bellows Palls, Vt., and 3.4 miles upstream from-mouth.

Drainage area.--82.7 sq mi.

Records available. June 1940 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 375 ft (from topographic map).

Average discharge. 16 years, 118 cfs.

Extremes. Maximum discharge during year, 2,290 cfs Apr. 29 (gage height, 7.21 ft); minimum, 5.7 cfs Aug. 28-30.

1940-56: Maximum discharge, 8,160 cfs Nov. 26, 1950 (gage height, 10.29 ft), from 

rating curve extended above 3,400 cfs by logarithmic plotting; minimum, 1.3 cfs 

Sept. 23, 1940.

Revision. The maximum discharge for the water year 1952 has been corrected to 

2,770 cfs Nov. 3, 1951 (gage height, 7.77 ft), and supplemental peak for the water 

year 1952 has been revised to 1,940 cfs June 1 (gage height, 7.02 ft), superseding 

figure published in WSP 1231.

Remarks.--Records excellent except those for periods of ice effect, which are fair. 

Occasional diurnal fluctuation at low flow caused by sawmill above station; fluctuation more frequent prior to 1945.

Rating table, water year 1955-56, except periods of Ice effect (gage

height, In feet, and discharge ubic feet per second)

1.3 

1.6 

2.0 

2.5 

3.0 

3.5

5.4

11

23

48

91

155

4.0 

4.5 

5.0 

5.5 

6.0 

7.0

248

395

605

870

1,220

2,060

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf am

In.

Oct.

20

19

17

if

17

40

46

42

31

26

23

21

21

44

107

374

278

200

149

103

83

78

76

99

88

77

*68

61

59

319

2,616

84.4

1.02

1.18

Nov.

241

162

124

235 

665

596

415

321

238

191

214

255

253

437

374

295

353

250

200

172

150

132

115

138

128

106

88

98

80

71

7,097

237

2.87

3.19

Dec.

64

59

74

76

77

*68

43

53

47

51

51

45

44

45

46

40

40

42

39

31

30

26

24

25

29

30

30

27

24

24

22.

1,326

42.8

0.518

0.60

Jan.

20

M

16

17 

18

19

19

19

280

680

515

491

533

301

218

162

126

88

65

64

60

53

50

46

45

43

42

40

39

38

37

4,160

134

1.62

1.87

Feb.

35

35

38

38 

39

38

37

38

40

39

38

40

39

38

38

37

37

37

*38

39

38

35

34

33

35

54

65

5T

50

1,157

39.9

0.482

0.52

Calendar year 1955: Max 748 Min 5.7

Mar.

45

41

45

55

50

49

48

47

46

45

45

47

49

50

50

46

45

45

46

47

49

54

54

*51

50

47

45

44

45

46

47

1,473

47.5

0.574

0.66

Apr.

48

56

74

131 

334

522

542

399

307

293

380

495

546

574

554

1,150

1,620

1,100

816

628

564

616

569

459

423

459

450

976

*1,720 

1.820

18,625

621

7.51

8.38

Mean 117

May

1,010

700

623

574 

507

415

353

293

244

255

238

214

202

179

158

146

140

120

112

102

85

77

82

93

76

68

14T

202

*146 

120

115

7,790

251

3.04

3.50

June

106

114

412

329 

210

149

114

91

75

86

158

100

78

62

49

41

36

32

30

28

27

28

26

24

22

20

20

23

20

J.J3

2,528

84.3

1.02

1.14

July

17

16

14

13 

13.

24

*33

25

22

26

21

17

20

81

46

29

28

23

18

16

15

17

16

15

13

12

11

10

9.2 

8.6

8.4

637.2

20.6

0.249

0.29

Aug.

8.2

9.5

9.0

8.2 

8.0

.8

.8

.8

.8

.6

.6

.4

.4

.4

.2

7.0

6.8

6.7

9.2

IS

11

15

12

*9.5

8.0

7.0

6.2

5.9

 H7.2

256.8

8.28

0.100

0.12

Sept.

8.2

20

17

17 

20

15

14

11

8.6

7.6

 6.8

874

11

25

51

33

44

51

32

32

*35

25

22

89

63

38

28

24

21 

18

795.6

26.5

0.320

0.36

Cfsm 1.41 In. 19.15

Water year 1955-56: Max 1,820 Mln 5.7 Mean 132 Cfsm 1.60 In. 21.81

Peak discharge (base. 1.000 efs). Apr. 17 (2 a.m.) 1,890 cfs (6.83 ft), Apr. 29 (l to 2 a.m.)

2,290 crs tv.zi rt;.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Dec. 7, 8, 12-21, Jan. 4-10, Jan. 18 tc Feb. 1, 

Feb. 3, 4, 16-19, Feb. 21 to Mar. 31.
178 CONNECTICUT RIVER BASIN

West River at Jamaica, Vt.

Location. Lat 43°06'30", long 72°46'30", on left bank a quarter of a mile upstream from 

highway bridge at Jamaica, Windham County, and 0.4 mile upstream from Ball Mountain 

Brook.

Drainage area.- -179 sq mi.

Records available. October 1946 to September 1956.

Gage . --Water-stage recorder. Altitude of gage is 640 ft (from topographic map).

Average discharge. 10 years, 379 cfs.

Extremes . --Maximum discharge during year, 8,020 cfs Apr. 29 (gage height, 10.14 ft); minimum, 7.8 cfs Aug. 18.

1946-56: Maximum discharge, 29,500 cfs Dec. 31, 1948 (gage height, 14.87 ft), from 

rating curve extended above 9,800 cfs by logarithmic plotting, verified by slope-area 

determination of peak flow; minimum, 5.0 cfs Aug. 28, 1949.

Remarks . --Records good except those for periods of ice effect, which are fair.

Rating tables, water year 1955-56, except periods of Ice effect 

height, In feet, and discharge, In cubic feet per second)

(gage

Oct. 1 to Apr. 29

4.0 

4.3 

4.6 

5.0 

5.5

69

122

244

460

6.0 

7.0 

8.0 

9.0 

10.0

750

1,680

3,060

5,010

7,600

Apr. 3O to Sept. 30

3.6 8.4 4.5 105

3.7 12 5.0 243

3.9 24 5.5 460

4.2 52

Note.--Same as preceding table above 5.5 ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

Z2

Z3

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

74

68

54

46

4_3

90

1,210

446

286

189

142

122

107

148

2,800

2,960

4.970

2,610

1,950

1,160

764

545

428

397

670

490

*433

352

304

316

2,640

26,814

865

4.83

5.57

Nov.

1,230

687

515

870

1,470

1,270

964

884

632

500

510

608

608

1.590

1,200

799

998

650

490

420

374

334

300

420

361

264

230

240

210

190

19,818

661

3.69

4.12

Dec.

170

150

160

200

240

220

150

160

145

130

120

110

98

96

91

87

80

75

70

65

60

55

51

47

60

80

86

70

57

54

51

3,288

106

0.592

0.68

Jan.

47 

42

38

38

38

41

46

51

250

1.600

1,400

1,200

1,100

530

36O

28O

190

160

145

140

130

120

110

105

100

95

90

88

86

85 

85

8,790

284

1.59

1.83

Feb.

85 

BH

86

91

97

94

92

94

94

94

94

94

93

93

93

95

100

98

95

95

95

95

95

*92

115

150

190

TSo

130

-------

2,974

103

0.575

0.62

Mar.

115 

105

120

140

120

115

110

110

105

105

105

105

105

100

100

100

100

100

100

105

105

110

*110

LOS

105

105

100

100

100

100 

105

3,310

107

0.598

0.69

Apr.

110

118

150

237

690

1,430

1,480

948

687

590

674

908

1,050

964

972

2,170

3,210

2,050

1,570

1,250

1,170

1,200

972

750

768

868 *960

3,200

5,670

6.270

43,086

1,436

8.02

8.95

May

2.960 

2,340

2,560

2,760

2,440

2,130

1,860

1,480

1,150

1,950

1,500

1,470

1,800

1,230

852

701

650

490

410

365

312

280

313

360

262

223

846

*1,010

540

410 

480

36,134

1,166

6.51

7.51

June

435 

365

1.750

1,110

608

445

334

258

207

276

628

324

226

189

143

110

90

71

60

55

51

51

52

48

45

40

38

59

51

39

8,138

271

1.51

1.69

July

36

32

28

25

25

74

*133

70

60

204

107

66

106

1,010 367"

175

164

11C

75

58

50

52

65

82

60

68

55

45

40

36 

31

3,509

113

0.631

0.73

Aug.

28 

26

23

21

19

18

17

16

16

14

13

14

12

14

12

11

10

9.1

206

124

60

*44

37

32

38

31

25

*22

19

18

23

972.1

31.4

0.175

0.20

Sept.

42

51

156

75

44

36

58

63

41

34

30

27

26

29

87

130

551

585

201

*280

253

148

121

795

387

223

156

126

105

3B

4,948

165

0.922

1.03

Calendar year 1955: Max 4,970 Mln 8.4 Mean 426 Cfsm 2.38 In. 32.30

Water year 1955-56: Max 6,270 Mln 9.1 Mean 442 Cfsm 2.47 In. 33.62

Peak discharge (base. 4.500 cfs).--Oct. 17 (4 p.m.) 6,220 cfs (9.50 ft); Apr. 29 (3 a.m.) 8,020 

cfs (10.14 ft). !

* Discharge measurement made on this day.

Note..--Stage-discharge relation affected by Ice Nov. 27 to Jan. 12, Jan. 15 to Apr. 2, Apr. 5, 6.
CONNECTICUT RIVER BASIN 179

West River at Newfane, Vt.

Location. Lat 42°59'45", long 72°38'20", on right bank 600 ft downstream from highway 

bridge and 1 mile northeast of Newf ane , Windham County.

Drainage area. 308 sq mi.

Records available. --September 1919 to September 1923, October 1928 to September 1956.

Gage. Water-stage recorder. Datum of gage is 384.21 ft above mean sea level, datum of 

1929. Prior to June 27, 1931, chain gage at site 600 ft upstream at same datum.

Average discharge. 32 years, 624 cfs.

Extremes. Maximum discharge during year, 14,600 cfs Oct. 15, Apr. 29 (gage height, 11.42 

ft ) ; minimum , 23 cfs Aug. 18.

1919-23, 1928-56: Maximum discharge, 52,300 cfs Sept. 21, 1938 (gage height, 22.81 

ft, from floodmarks), from rating curve extended above 20,000 cfs on basis of 

contracted-opening determination at gage height 19.3 ft and slope-area determinations 

at gage heights 19. 46 and 22.81 ft; minimum, 13 cfs Sept. 17, 18, 1948, Aug. 27, 28, 

1949.

Flood of Nov. 3, 1927, reached a stage of 23.0 ft, from floodmarks, at chain-gage 

site (discharge, 45,000 cfs, from rating curve extended by logarithmic plotting and on 

basis of computation of flow over dam at West Dummerston).

Remarks . Records excellent except those for periods of ic e effect, which are fair.

Re/lslons (water years). --WSP 756: Drainage area. WSP 1231: 1920-21(M), 1922-23, 

1929- 29-31 (M).

Rating tables, water year 1955-56, except periods of Ice effect (gage 

height. In feet, and discharge, In cubic feet per second)

Oct. 1 to Apr. 16 Apr. 17 to Sept. 30

4.1 

4.4 

4.7 

5.0 

5.5

62

170

314

495

875

1,370

2,710

4,550

6,920

13,300

4.3

4.5 

5.0

36

73

138

225

505

5.5 

6.0 

7.0 

8.0 

9.0 

11.0

905

1,410

2,710

4,550

6,920

13,300

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14 

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

116

112

88

75

65

75

1,630

776

495

331

257

205

179

204 

8,100

6,710

10.500

4,900

3,640

2,190

1,470

1,060

807

702

1,100

875

*790

650

565 

579

5,760

54,806

1,768

5.74

6.62

Nov.

2,440

1,400

1,030

1,540

5,410

2,740

2,050

1,770

1,330

1,020

1,010

1,140

1,200

3,130 

2,400

1,590

2,050

1,340

1,010

850

726

642

544

758

695

530

430

440

385

520

39,920

1,331

4.52

4.82

Dec.

300

270

304

348

412

370

*262

270

250

250

210

195

175

150 

160

150

140

130

120

110

100

95

90

80

105

145

150

120

100

qn

5,726

185

0.601

0.69

Jan.

80

73

67

66

66

72

80

90

370

2,650

2,290

2,190

1,930

929 

658

500

350

270

230

220

205

190

180

165

155

150

145

145

130 

140

140

14,926

481

1.56

1.80

Feb.

140

140

145

155

165

160

155

160

160

160

160

160

160

160 

160

160

*170

160

160

160

160

160

155

150

165

255

'250 325

250

5,050

174

0.565

0.61

Mar.

210

200

220

260

240

225

215

210

205

200

ZOO

200

195

195 

190

190

190

190

200

205

220

230

*238

224

215

210

205

200

195 

190

190

6,457

208

0.675

0.78

Apr.

195

2T5

260

410

1,250

2,300

2,440

1,660

1,180

1,060

1,280

1,680

1,940

1,800 

1,810

4,320

6,630

3,660

2,840

2,240

2,090

2,260

1,920

1,460

1,380

1,650

*1,600

5,610

10, 500

11.900

79,540

2,651

8.61

9.60

May

5,320

4,020

4,210

4,660

4,160

3,410'

2,930

2,380

1,850

2,840

2,390

2,170

2,600

1,970 

1,410

1,160

1,070

824

698

620

533

479

472

575

440

380

912

*1,550

887

658 

698

58,276

1,880

6.10

7.04

June

714

590

3.060

1,960

1,130

798

598

460

380

392

1,030

605

416

330

270

212

176

146

119

104

97

97

94

91

86

81

75

81

97

75

14,369

479

1.56

1.74

July

69

62

56

52

50

84

*212

134

104

250

201

123

122

1.230 

605

301

225

184

130

97

86

86

94

127

108

91

89

73

64

53

52

5,219

168

0.545

0.63

Aup.

48

45

43

40

37

36

36

34

32

31

29

28

29

29 

29

*26

24

23

iTf

210

100

71

58

54

50

50

43

37

34

34

37

1,496

48.3

0.157

0.18

Sept.-

50

69

161

146

79

58

54

89

66

52

46

43

43

43 

72

115

403

876

321

*274

390

216

167

847

604

330

225

180

151

127

6,297

210

0.682

O.76

Calendar year 1955: Max 10,300 Mln 17 Mean 770 Cfsm 2.50 In. 33.93

Water year 1955-56: Max 11,900 Mln 23 Mean 798 Cfsm 2.59 In. 35.27

Peak discharge (base, 8,800 cfs). --Oct. 15 (6:30 p.m.) 14.60O cfs (11.42 ft); Oct. 31 (8 a.m.)

9,210 cfs (3.76 ft); Apr. 17 11:30 a.m.) 8,800 cfs (9.63 ft),- Apr. 29 (2:30 a.m.) 14,600 cfa (11.42 ft).

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Nov. 28 to Dec. 2, Dec. 8 to Jan. 1O, Ja 

Mar. 22, Mar. 25 to Apr. 6.
180 CONNECTICUT RIVER BASIN

Connecticut River at Vernon, Vt.

Location. Lat 42°46'10", long 72°30'50", on right bank Just downstream from Vernon Dam 

at Vernon, Windham County, 2 miles upstream from Ashuelot River.

Drainage area. 6,266 sq mi.

Records available. February to April 1936 (in WSP 798), September and October 1938 (in 

WSP 867), October 1944 to September 1956.

Gage. Water-stage recorder. Datum of gage is at mean sea level, datum of 1929. Prior 

Eo Jan. 20, 1948, at datum 94.13 ft higher.

Average discharge. 12 years (1944-56), 11,020 cfs (adjusted for storage).

Extremes.--Maximum discharge during year, 79,600 cfs Apr. 30 (elevation, 203.14 ft); minimum daily, 270 cfs Sept. 30.

1936, 1938, 1944-56: Maximum discharge, 176,000 cfs Mar. 19, 20, 1936 (gage 

height, 128.8 ft, datum then in use), from rating curve extended above 69,000 cfs; 

minimum daily, 99 cfs Oct. 8, 1944.

Remarks. Records good except those below 1,000 cfs, which are fair. Plow regulated by 

powerplants and by First Connecticut and Second Connecticut Lakes, Lake Francis, Moore 

Reservoir, and Comerford Station Pond (see p. 230), and other reservoirs (combined

usable capacity, about 20 billion cubic feet).

Revisions.--WSP 1031: Drainage area.

Discharge ubic feet pe econd, water year October 1955 to September 1955

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

(t)

Oct.

920

285

3,140"

3,200

3,140

4,820

6,780

3,340

3,550

4,700

3,970

3,160

3,750

7,700

18,700

15,400

21 . 500

17,100

12,100

11,900

9,560

4.500

1,910

5,610

5,860

7,310

7,100

*7,970

6,180

4,650

20,500

229,785

7,412

-234

Nov.

16,500

15,100

12,100

12,200

25,200

23,000

18,000

16,100

13,900

12,800

12,600

13,900

11,900

11,200

14,000

14,900

14,100

13,500

13,000

8,170

8,920

9,450

8,970

5,640

8,600

9,480

5.690

6,760

7,180

6,170

365,030

12,170

+ 1,056

Dec.

5,610

5,240

3,150

4,750

7,000

7.540

6,800

4,950

4,750

*2,270

958

5,260

4,520

4,870

5,070

4,470

2,920

1,980

5,270

4,770

5,000

3,200

1,800

2,000

1,300

1,700

3,800

3,700

3,600

3,400

1,800

121,428

3,917

-519

Jan.

1,100

1,400

3,100

3,000

3,200

3,100

1,600

1.000

6,400

12,000

19,000

20,000

21.000

*18,000

13,000

9,000

9,200

7,050

6,470

6,500

4,270

2,860

6,810

6,570

6,880

4,600

4,900

2,600

2,300

5,000 

4,900

216,390

6,980

+844

Feb.

4,000

4,800

4,900

3,300

1.400

6,060

4,650

5,980

5,550

6,240

4,380

3,540

5,020

4,900

5,740

5,000

5,900

3,590

1,800

*5, 900

6,590

5,100

4,800

4,700

4,000

5,600

5,400

7.200

6,400

138,240

4,767

-1,004

Mar.

6,500

6,200

5,800

2,500

7,270

7,000

7.500

6,950

5,000

4,130

5,700.

5,750

5,750

6,650

6,180

6,620

4,780

1.510

6,200

4,200

5,800

5,000

5, 100

5,200

3,900

*5,540

6,260

4,480

5,140

5,510 

2,840

164,540

5,308

-1,139

Apr.

2,000

5,240

5,600

6,880

15,400

27,300

32,600

31,200

22,800

20, 500

21,300

25,900

51,300

30,000

29,200

52 , 600-

60,900

61,600

55,100

42,600

57,600

32,900

29,700

28,000

26,700

26,100

23,300

+30,500

60,400

75.600

926,620

30,890

+ 3,298

May

71.900

58,200

52,500

52,500

50,000

45,600

41,100

36,800

31,800

28,800

29,200

28,400

27,800

28,300

29,900

30, 300

27,800

24, 300

21,300

16,900

13,800

11.500

11,800

12,000

12,100

12,200

11,600

26,500

34,300

*i9;goo

927,100

29,910

+1,680

June

16,500

18,500

25,900

52 . 500

25,600

17,800

16,500

16,200

15,500

9,770

9,030

11,200

12,100

10,200

7,970

6,330

3,200

4,880

6,560

5,810

3,980

4,430

295

280

4,620

5.530

5,610

5,420

7,110

 ----

307,913

10,260

+307

July

751

3,720

3,640

1,120

*4,640

5,830

1,870

860

6,380

8,760

10,400

9,060

6,520

10, 700

15.600

10,500

6,710

6,580

8,100

5,680

3,900

2,380

4,330

4,340

4,700

5,490

6,170

3,0^0

544

5,030 

3,600

168,935

5,451

-160

Aug.

3,610

5,450

2,310

718

285

2,910

3,570

2,710

2., 880

5,090

924

280

3,010

1,800

2,620

2,850

5,080

666

285

2,850

2,900

2,690

2,590

2,580

300

280

2,470

2,600

3,120

3,080 

6,050

71,938

2,521

-353

Sept.

6,850

2,980

3,900

7,000

7,790

4,490

5,980

2,210

1,020

4,300

4,610

4,520

4,120

2,620

332

874

6,440

7,130

7,440

6,240

6,910

*7,260

2,120

8,450

15.800

12,800

9,040

6,830

1,300 

270

159,586

5,520

+22.1

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

7,178 

1.15 

1.32

15,22C 

2.11 

2.5E

Calendar year 1955: 

Water year 1955-56:

3,398 

0.542

0.65

7,824 

1.25 

1.44

3,763

0.601 

0.65

4,169 

0.665 

0.77

34,190 

5.46 

6.09

31,590 

5.04 

5.81

Observed

Max 70,000 Min 275 Mean 10,650 

Max 75,600 Min 270 Mean 10,380

10,570 

1.69 

1.88

5,231 

0.81,4 

0.97

1,967 

0.314 

0.36

5,342 

0.853 

0.95

Adjusted

Mean 10,690 Cfsm 1.71 In. 25.15 

Mean 10,690 Cfsm 1.71 In. 23.22

Peak discharge (base. 50,000 cfs).--10:50 p.m. Apr. 17 to 1 a.m. Apr. 18, 64,900 cfs (199.48 ft); 

Apr. 50 (5 to 6 p.m.) 79,600 cfs (205.14 ft).

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in First Connecticut and Second Connecticut Lakes, Lake Francis, Moore Reservoir (dead storage October to March, live storage thereafter), Comerford Station Pond, Union Village Reservoir, 4 reservoirs in Mascoma R'ver basin, and 

Sunapee Lake.

Note.--Stage-discharge relation affected by ice Dec. 21 to Jan. 17, Jan. 26 to Feb. 5, Feb. 22 to 

"e.r. 5, Mar. 11, 19-24.
CONNECTICUT RIVER BASIN 181

Ashuelot River near Gilsum, N. H.

Location. Lat 43°02'20", long 72°16'15", on right bank 50 ft downstream from White Brook, 

60 ft upstream from stone-arch bridge just off Keene-Newport road, and 0.7 mile downstream from Gilsum, Cheshire County.

Drainage area.--71.1 sq mi.

Records available.--August 1922 to September 1956.

Gage. Water-stage recorder. Concrete control since Oct. 13, 1942. Datum of gage is 

- 773.86 ft above mean sea level (levels by Corps of Engineers).

Average discharge.--34 years, 127 cfs.

Extremes. Maximum discharge during year, 1,920 cfs Apr. 30 (gage height, 7.74 ft); minimum, 4.4 cfs Aug. 17, 28, 29.

1922-56: Maximum discharge, 5,220 cfs Sept. 21, 1938 (gage height, 11.24 ft in gage 

well), from rating curve extended above 2,000 cfs on basis of float measurements and 

slope-area determination at gage height 11.24 ft; maximum gage height, 12.80 ft Mar. 19, 

1936; minimum discharge, about 1 cfs Oct. 6, 1922, July 10, 1923, Nov. 14, 1£52.

Remarks. Records good except those for periods of ice effect, which are fair. Plow regulated by reservoir above station. Diurnal fluctuation caused by power-plant above station prior to 1938.

Revisions (water years).--WSP 661: Drainage area. WSP 781: 1934(M). WSP 1231: 1923- 

27(M) , 1928, 1929-30(M) , 1931, 1932(M).

Ratlng table, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.35 4.4 3.5 251

1.5 7.0 4.0 380

1.7 17 5.0 715

2.0 38 6.0 1,060

2.5 86 8.0 2,080

3.0 156

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14 

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

16

14

12

10

10

17

43

48

46

36

30

29

26

31 

158

479

1.100

984

628

416

312

230

171

145

163

154

134

115

*103

92

262

6,014

194

2.73

3.15

Nov.

383

338

269

274

662

648

461

360

292

226

208

222

245

352 

407

336

352

312

247

202

166

142

118

124

119

104

97

92

85

7_9

7,922

264

3.71

4.14

Dec.

74

71

68

68

73

69

70

70

*70

68

63

60

56

52 

49

43

43

45

42

34

29

27

25

23

25

26

24

23

21

22

21

1,454

46.9

0.66O

0.76

Jan.

19

18

16

17

18

18

18

18

285

914

1,050

866

782

589 

413

304

222

154

134

110

95

85

80

75

70

65

60

56

54

53

52

6,710

216

3.04

3.51

Feb.

50

48

46

42

45

45

45

46

46

45

45

44

42

41 

40

41

41

39

42

43

41

39

38

36

45

76

88

rr

69

1,385

47.8

0.672

0.72

Mar.

65

61

62

69

20

65

63

63

65

60

59

60

59

58 

59

55

54

*62

60

60

59

58

58

57

58

57

55

53

52

51

52

1,839

59.3

0.834

0.96

Apr.

52

59

72

107

214

320

410

377

344

320

309

336

395

440 

452

659

1,110

953

760

578

519

533

*512

419

360

372

352

631

*1,330

1,720

15,015

500

7.03

7.85

May

1,290

858

656

575

540

470

398

344

286

256

247

234

216

197

171

154

136

118

107

98

88

79

78

82

74

*67

99

189

177

156

140

8,580

277

3.90

4.49

June

148

226

413

488

369

279

200

148

115

102

130

117

97

78 

65

55

47

39

34

30

28

27

26

24

22

19

19

21

17

15

3,398

113

1.59

1.78

July

*14

13

12

10

10

15

17

15

21

22

17

15

18

i

39

33

28

25

22

21

20

19

20

18

16

14

13

12

9 9°o5

634.5

20.5

0.288

0.33

Aug.

8.1

B7I

7.7

6.7

e.4

6.0

5.8

5.6

5.3

5.2

5.2

4.9

4.8

4.9 

4.9

4.6

4.6

.' 4.8

4.9

4.9

7.2

7.0

5.8

5.3

5.0

4.8

4.6

4.5

4.4

4.6

*7.0

173.6

5.60

0.079

0.09

Sept.

7.4

9.5

12

9.0

7.0

6.4

6.7

6.2

5.8

5.3

5.2

5.0

5.3

5.8 

9.5

14

17

20

*16

16

17

16

16

40

15

42

40

36

29

26

494.1

16.5

0.232

0.26

Calendar year 1955: Max 1,100 Mln 5.5 Mean 128 Cfsm 1.80 In. 24.44

Water year 1955-56: Max 1,720 Min 4.4 Mean 147 Cfsm 2.07 In. 28.04

Peak discharge (base. 1.000' 

(1 a.m. to 4:30 p.m.) 1,070 cfs 

1,920 cfs (7.74 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 22, 23, 26, 27, Nov. 29 to Dec. 3, Dec. 6 to 

Jan. 9, Jan. 20 to Feb. 25 (no gage-height record Dec. 22-31, Feb. 22-25; discharge estimated on 

fcisis of weather records, and records for Ashuelot River at Hinsdale, Otter Brook near Keem?, 

Bearao Brook at Hillsboro, and South Brancn Rsnueioi; ni-rcr at wdob, near marlboro).

[. Oct. 17 (5:30 to 6:30 p.m.) 1,170 cfs (6.27 ft); Jan. 11 

5.02 ft); Apr. 17 (5 p.m.) 1,160 cfs (6.24 ft); Apr. 30 (1 p.m.)
CONNECTICUT RIVER BASIN

Ashuelot River below Surry Mountain Dam, near Keene, N. H.

Location. Lat 42°59'45", long 72 0 18'40", on right bank 600 ft downstrsam from Surry 

Mountain Dam, 2j miles upstream from Sturtevant Brook, and 4| miles north of Keene, 

Cheshire County.

Drainage area. 101 sq mi.

Records available. September 1945 -to September 1956.

Gage.--Water-stage recorder and concrete control. Datum of gage is 480.00 ft above mean 

sea level, datum of 1929 (Corps of Engineers benchmark).

Average discharge. 11 years, 177 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 994 cfs May 9 (gage neight, 8.67 ft); minimum 

daily, 1.1 cfs Oct. 16.

1945-56: Maximum discharge, 1,090 cfs Mar. 31, Apr. 9, 1950 (ga?e height, 8.94 ft); 

minimum daily, 0.8 cfs Dec. 4-7, 1948.

Remarks. Records excellent. Flow regulated by Surry Mountain Reservoir (see p. 230).

Rating tables, water year 1955-56 (gage height, In feet, and 

discharge, In cubic feet per second)

Oct. 1 to Apr. 17 Apr. 18 to Sept. 3O

3.8 0.9

3.9 1.6

4.0 2.6

4.2 

4.4 

4.7

5.4 

9.5

Note. Same as following table above 4.7 ft. 5.5

20

43

82

6.0 154

6.5 257

7.0 402

8.0 7SO

9.0 1,110

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20 .

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

ft)

Oct.

24

21

18

16

15

20

66

72

69

53

44

40

36

35

19

1.1

1.2

332

706

802

778

812

834

742

604

302

182

159

*143

133

317

7,396.3

239

+5.68

Nov.

421

431

405

359

235

550

774

792

756

661

368

318

332

470

624

560

525

472

359

284

237

187

149

146

169

176

143

135

136 

104

11,278

376

-0.81

Dec.

9O

91

92

108

122

121

68

36

*42

43

45

47

47

47

59

64

49

45

45

45

31

24

24

30

34

34

34

34

34 

27

24

1,636

52.8

+6.09

Jan.

24

24

18

13

13

19

23

23

54

98

75

322

665

*806

795

795

795

774

760

700

339

69

83

91

88

81

76

69

56 

53

54

7,855

253

+1.79

Feb.

56

56

56

56

56

56

57

57

70

77

76

75

63

61

61

62

62

*61

61

61

61

60

53

50

50

63

72

105

122

1,876

64.7

+2 . 04

Mar.

95

105

98

88

90

91

108

100

90

90

88

88

88

88

87

76

67

68

*80

105

~99 125

88

78

62.

100

102

71

70 

81

78

2,744

88.5

-9.78

Apr.

71

108

112

154

265

412

489

643

647

500

478

544

643

661

714

385

111

537

567

725

785

792

750

*781

854

876

882

6l9

5_, 7 

5 9

15,116.6

504

+270

May

228

739

865

896

921

942

984

984

988

980

970

974

970

952

907

865

812

760

708

643

544

428

206

128

115

105

141

216

214 

207

 199

19,591

632

-263

June

184

193

271

472

525

437

387

353

270

187

235

214

184

127

102

85

70

60

53

48

44

42

40

37

36

33

31

37

30

27.

4,814

160

-3.12

July

24

*22

20

18

19

29

31

26

35

36

29

25

27

9Ji

83

58

49

. 42

36

31

30

32

29

32

28

26

22

20

18 

16

J.4

1,003

32.4

0

Aug.

14

13

13

12

11

10

9.8

9.6

9.3

8.7

8.2

7.8

7.8

8.5

7.6

7.6

8.5

9.1

9.6

9.3

10

14

11

9.6

8.7

7.6

7.2

6.7

6.7 

7.4

9.1

292.4

9.43

0

Sept.

10

12

*20

14

12

9.8

9.8

9.6

8.9

8.0

7.6

7.8

9.3

9.3

14

20

28

34

 26

25

28

24

24

66

64

58

55

49

42

38

744.1

24.8

+0.04

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

244 

2.42 

2.79

37E 

3.7] 

4.1^

Calendar year 1955: 

Water year 1955-56:

> 58.9 

0.583

t 0.67

255 

2.52 

2.91

66.7 

0.660 

0.71

78.7 

0.779 

0.90

774 

7.66 

8.55

369 

3.65 

4.21

Observed

Max 834 Min 1.0 Mean 173 

Max 988 Min 1.1 Mean 203

157 

1.55 

1.74

32.4 

0.321 

0.37

9.43 

0.093 

0.11

24.8 

0.246 

0.27

Adjusted

Mean 173 Cfsm 1.71 In. 23.25 

Mean 203 cfsn Z.O1 in. 27.37

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Surry Mountain Reservoir.
CONNECTICUT RIVER BASIN 183

Otter Brook near Keene, N. H.

iear 

tream

Location. Lat 42°57'55", long 72°14'00", on left bank 10 ft downstream from bridge m 

State Highway 9, 3| miles northeast of Keene, Cheshire County, and 3j miles upstre: 

from Minnewawa Brook.

Drainage area.--42.3 sqmi.

Records available. October 1923 to September 1956.

Gage. Water-stage recorder. Concrete control since Nov. 17, 1936. Datum of gage is 

716.11 ft above mean sea'level (levels by Corps of Engineers).

Average discharge. 33 years, 71.9 cfs.

Extremes. Maximum discharge during year, 1,320 cfs Apr. 30 (gage height, 5.97 ft); minimum, 1.1 cfs Aug. 17.

1923-56: Maximum discharge, 6,130 cfs Sept. 21, 1938 (gage height, 7.93 ft), from 

rating curve extended above 1,300 cfs on basis of surface-float measurements and slopearea and contracted-opening determinations at gage heights 7.10 and 7.93 ft; minimum, 

1.1 cfs Oct. 4, 5, 1953, Aug. 17, 1956.

Remarks. Records good except those for.periods of ice effect, which are fair. Flow regulated at times by Granite Lake above station.

Revisions (water years). WSP 871: Drainage area. WSP 1231: 1924(M), 1928, 1933-34(M).

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Qct. 1 to Apr. 29 Apr. 30 to Sept. 30

2.4 

2.6 

2.8 

3.0

1.2 

1.9 

3.2

Note.--Same as 

following table 

above 3.0 ft.

3.2 

3.5

3.8 

4.2 

5.0 

6.0

60

113

203

380

785

1,340

Discharge, in cubic feet per second, water year October 195E to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

17

13

10

9.0

7.9

9.8

40

42

40

29

24

20

17

24

178

384

928

515

330

233

176

139

111

*100

121

107

100

85

77

74

238

4,198.7

135

3.19

3.69

Nov.

230

169

131

196

510

365

241

193

157

134

142

157

163

313

292

222

279

214

163

139

118

102

94

92

85

78

72

68

59

54

5,232

174

4.11

4.60

Dec.

48

48

49

53

56

53

47

44

*40

35

35

31

30

27

30

25

27

28

25

19

18

17

16

16

17

18

17

16

15

15

ii

929

30.0

0.709

0.82

Jan.

14

13

11

12

13

13 - 12

12

300

959

640

475

485

340

237

183

145

110

96

87

74

63

58

49

46

44

41

40

40

39

38

4,669

151

3.57

4.10

Feb.

37

35

33

31

33

34

35

37

36

36

35

34

33

33

31

31

30

31

35

32

29

27

26

26

31

66

60

54

50

1,041

35.9

0.849

0.92

Mar.

48

43

43

56

48

42

44

43

45

42

 41

41

36

34

35

32

45

47

40

44

41

40

40

39

36

38

35

33

31

33

33

1,248

40.3

0.953

1.10

Apr,

32

35

40

60

112

187

226

200

183

157

163

189

218

245

258

440

710

575

455

370

350

385

*375

283

258

266

262

524

1,000

1,160

9,718

324

7.66

8.54

May

672

460

400

355

316

270

222

189

157

154

145

126

118

109

96

90

80

74

69

66

58

53

52

49

45

*44

73

102

85

72

68

4,869

157

3.71

4.28

June

66

74

165

154

113

90

74

62

53

54

66

56

47

39

32

27

24

19

16

14

13

14

13

13

11

9.4

11

16

12

11

1,368.4

45.6

1.08

1.20

July

*9.2

8.1

7.r

e.e

6. ft

12

12

12

18

15

11

9.7

19

79

48

32

24

19

14

13

11

11

9.7

13

11

8.9

7.5

7.0

5.9

4.8

4.2

469.4

15.1

0.357

0.41

Aug.

4.9

4.8

Z.B

2.3

2.0

E.O

i.e

1.5

1.3

1.4

1.3

1.3

1.4

' 1.5

1.4

1.2

1.2

1.4

1.4

*1.4

4.6

7.0

3.3

2.4

2.0

1.7

1.5

1.4

1.4

1.4

2.2

67.2

2.17

0.051

0.06

Sept. 

3.0

7.9

22

8.0

4.4

3.4

4.8

4.2

3.2

3.2

2.3

2.1

2.4

2.8

6.3

8.5

17

19

*9.7

11

12

8.9

9.0

67

36

24

18

14

12

10

356.1

11.9

O.261

0.31

Calendar year 1955: Max 928 Mln 1.4 Mean 77.5 Cfsm 1.83 In. 24.86

Water year 1955-56: Max 1,160 Min 1.2 Mean 93.3 Cfsm 2.21 In. 30.03

Peak discharge (base, 600 cfs). --Oct. 17 (l p.m.) 1,000 cfs (5.40 ft); Jan. 10 (3:15 a.m.) 1,020

cfs (5.43 ft); Apr. 17 (5:30 a.m.) 736 cfs (4.91 ft); Apr. 30 (6:15 a.m.) 1,320 cfs (5.97 ft).

Discharge measurement made on this day. 

Note.--Stage-discharge relation affected by ice Nov. 27, Nov. 29 to Dec. 1, Dec. 7-11, D5C. 15 to 

Jan. 9, Jan. 18, Jan. 21 to Feb. 15, Feb. 22 to Mar. 18, Mar. 25, 27-29, Apr. 1-4, 10, 11 (no gageheight record Dec. 7-9, Jan. 29 to Feb. 13; discharge estimated on basis of 1 discharge measurement, 

weather records, and records for Ashuelot River near Gilsum, South Branch Ashuelot River at nfebb, 

near Marlboro, and Ashuelot River at Hinsdale).
184 CONNECTICUT RIVER BASIN

South Branch Ashuelot River at Webb, near Marlboro, N. H.

Location. Lat 42°52 I 20", long 72°12 I 55", on right bank 15 ft downstream from bridge, 

800 ft southwest of Webb station on Boston and Maine Railroad, and 2| miles south of 

Marlboro, Cheshire County.

Drainage area. 36.0 sq mi.

Records available. October 1920 to September 1956. October 1920 monthly discharge only, 

published in WSP 1301.

Gage. Water-stage recorder. Concrete control since July 18, 1938. Datum of gage is 

667.11 ft above mean sea level, datum of 1929 (levels by Corps of Engineers).

Average discharge..--36 years, 60.1 cfs.

Extremes. Maximum discharge during year, about 1,700 cfs Jan. 10 (occurred during period 

of ice effect); maximum gage height, 6.88 ft Jan. 9 (ice Jam); mi-rimum discharge, 

2.1 cfs Aug. 20; minimum daily, 2.5 cfs Aug. 20, 27.

1920-56: Maximum discharge, 5,960 cfs Sept. 21, 1938 (gage height, 7.89 ft), from 

rating curve extended above 3,300 cfs on basis of contracted-opening and slope-area 

determinations of peak flow; maximum gage height, 9.70 ft Mar. 12, 1936 (ice jam); 

practically no flow Mar. 22, 1931; minimum daily discharge, 0.4 cfs Sept. 15-17, 1926.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. Flow regulated by powerplant and several small reservoirs above station

Revisions (water years) . WSP 641: 1925(M). WSP 871: Drainage are-}. WSP 1231: 1921- 

24(M) , 1926(M) , 1929, 1933-34(M), 1939.

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, In feet, and discharge, in cubic feet per second)

Oct. 1 to Apr. 29 Apr. 30 to Beit. 30

2.0 6.7

2.3 16

2.6 27

3.0 40

3.4 55

3.8 86

4.1 149

4.5 300

5.0 555

5.5 920

6.0 1,470

1.67 2.5

1.8 4.4

2.0 8.4

2.3 19

2.6 28

3.0 40

Note.--Same ai preceding table above 3.0

Discharge, in cubic feet per second, water year October 1955 to S">tenrtser 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

15

13

14

9.9

8.8

9.9

52

55

52

46

28

20

17

16

153

255

465

388

187

124

76

61

55

*56

68

62

59

52

40

42 

247

2,746.6

88.6

2.46

2.84

Nov.

200

120

94

146

544

332

198

148

113

91

114

139

152

205

202

155

231

178

113

90

94

83

66

61

77

60

46

61

57

19

4,209

140

3.89

4.35

Dec.

38

41

36

43

*M

57

52

40

38

30

29

42

37

33

34

37

21

21

30

20

18

20

15

16

16

14

14

13

12

11

897

28.9

0.803

0.93

Jan.

9.0

JLO

8.5

10

12

12

11

11

350

*1,000

410

296

286

184

136

116

86

70

62

51

47

45

50

40

40

45

35

31

30

34

40

3,565.5

115

3.19

3.68

Feb.

30

28

29

30

33

36

34

39

34

35

33

32

31

30

*33

32

30

26

26

32

27

30

24

29

28

40

45

38

35

-------

929

32.0

0.889

0.96

Mar.

34

323~5

38

38

35

46

39

36

35

.32

40

4-3

42

39

40

33

38

*37

39

41

37

41

37

41

38

38

35

35

32 

33

1,159

37.4

1,04

1.20

Apr.

34

47

56

92

178

299

320

204

180

161

180

208

251

296

300

575

822

522

410

310

*282

335

320

243

223

239

215

412

850

822

8,386

313

8.69

9.70

May

485

330

278

247

215

180

155

133

112

101

98

89

85

78

70

64

58

52

51

54

47

43

43

43

38

 35

54

91

65

59 

90

3,543

114

3.17

3.66

June July

101 9.5

73 *9.0

277 7.1

212 6.5

114 6.0

79 9.5

62 18

48 15

41 13

38 13

55 13

45 16

38 17

34 §5

28 34

24 23

20 21

17 18

15 14

13 10

13 10

12 9.2

11 8.2

11 11

10 10

10 9.0

11 8.7

13 8.0

11 5.8

10 4.6 

-------- 6.6

1,446| 428.7

48.2 13.8

1.34 0.383

1.49 0.44

Aug.

6.9

7.1

6.6 '6.4

4.0

3.0

4.4

5.5

5.7

5.5

5.5

3.6

3.8

6.4

6.2

5.7

5.3

5.1

3.2

*2.5

5.8

10

9.0

6.9

5.7

3.5

2.5

4.0

4.8

5.1 

6.0

165.7

5.35

0.149

0.17

Sept.

7.1

7.3

12

10

7.5

9.8

20

16

8.1

5.5

5.5

6.0

12

14

14

*21

38

38

30

29

30

26

20

63

54

30

23

19

15

. 9.2

599.8

20.0

0.556

0.62

Calendar year 1955: Max 544 Min 2.7 Mean 64.0 Cfsm 1.78 In. 24.14

Water year 1955-56: Max 1,000 Mln 2.5 Mean 79.4 Cfsm 2.21 In. 30.04

Peak discharge (base. 550 efs).--0ct. 17 (7:30 to 8:30 p.m.) 603 cfs (5.08 ft); Nov. 5 (8 to 8:30 

a.m.) 609 cfs (5.09 ft); Jan. 10 (about 3 a.m.) about 1,700 cfs; Apr. 17 (2 to 3 a.m.) 983 cfs 

(5.57 ft); Apr. 29 (5:30 a.m.) 1,090 cfs (5.68 ft).

* Discharge measurement made on this day.

Note.--No gage-height record June 10 to July 1, July 4-8; discharge estimated on basis of weather 

records, recorded range in stage, and records for Ashuelot River near Gllsum, Ashuelot River at 

HittBdale, and Otter Broolr near Keene. Stage-discharge relation affected by ice Nov. 27, Dec. 1, 2, 

Dec. ? to Jan. 10, Jan. 18 to Feb. 17, Feb. 20 to Mar. 1, Mar. 3-5, 9, 17-22, 25-29.
CONNECTICUT RIVER BASIN 

Ashuelot River at Hinsdale, N. H.

"185

Location. Lat 42°47'05", long 72°29'10", on left bank 40 ft upstream from highway bridge 

at Hinsdale, Cheshire County, a quarter of a mile downstream from dam, and ij miles 

upstream from mouth.

Drainage area. 420 sq mi.

Records available.--March 1907 to December 1911, July 1914 to September 1956.

Gage. --Water-stage recorder. Datum of gage is 201.32 ft above mean 'sea level (levels by 

Corps of Engineers). Prior to Sept. 29, 1933, chain gage on highway bridg? at same 

datum.

Average discharge.--46 years, 661 cfs (adjusted for storage).

Extremes..--Maximum discharge during year, 5,900 cfs Apr. 30 (gage height, 7.93 ft); minimum, 47 cfs Aug. 26; minimum daily, 57 cfs Aug. 28.

1907-11, 1914-56: Maximum discharge, 18,500 cfs Mar. 29, 1920 (gage height, 

10.1 ft, from graph based on gage readings), from rating curve extended above 8,000 

cfs; maximum gage height, 20.2 ft Mar. 19, 1936, from floodmarks (backdate- from Connecticut River); minimum discharge, 10 cfs Sept. 9, 1953; minimum daily, 12 cfs 

Sept. 15, 1929.

Remarks. Records excellent except those for periods of ice effect, which are good. Plow 

regulated by mills above station. High flow affected by Surry Mountain Reservoir 

since 1942 (see p. 230).

Revisions (water years).--WSP 661: Drainage area. WSP 781: 1907-11 calendar years, 

1914-34.WSP 1301: 1915(M), 1917-19(M), 1921-33(M). WSP 1331: 1920(M).

Rating table, water year 1955-56, except periods of ice effect (gage 

height, In feet, and discharge, in cubic feet per second)

2.9 54 5.0 1,070

3.2 103 6.0 2,170

3.6 212 7.0 3,790

4.0 390 8.0 5,990

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

202

172

166

144

144

152

368

564

544

445

346

284

248

230

405

900

1,780

2.440

2,300

2,040

1,740

1,520

1,400

1,350

1,310

1,180

900

763

*674

616

1,360

26,687

861

+5.68

Nov.

2,000

1,720

1,400

1,390

2,740

2.94_Q

2,520

2,100

1,870

1,680

1,630

1,590

1,520

1,590

2,070

1,990

1,990

1,980

1,670

1,350

1,170

1,090

968

862

798

805

735

680

707

648

46,203

1,540

-0.81

Dec.

596

544

557

596

*694

763

635

550

463

451

412

340

384

368

370

370

360

330

250

250

220

160

170

150

170

175

170

170

155

160

150

11,133

359

+6.09

Jan.

145

140

135

135

130

140

140

125

390

1,830

2.640

2,240

2,250

2,210

1,890

,620

,460

,280

,150

,190

1,090

698

450

410

380

355

362

330

280

300

305

26,200

845

+1.79

Feb.

280

295

275

245

252

280

362

384

379

379

374

321

*357

357

357

357

300

310

280

330

255

260

250

250

316

384

469

475

390

9,523

328

+2.04

Mar.

385

434

445

493

544

531

544

616

518

499

423-

434

481

487

475

428

331

400

418

428

440

460

499

463

369

390

457

445

428

440

423

14,128

456

-9.78

Apr.

357

401

564

742

1,170

1,900

2,500

2,320

2,040

1,980

1,980

2,270

2,640

2,820

2,950

3,560

5,050

5,050

4,150

3,460

3,110

3,150

3,320

3,150

2,820

2,780

2,730

2,900

4,510 

*5.550

81,924

2,731

+270

May

.420

,810

,160

,950

,760

,560

,340

,070

,940

,850

,790

,730

,620

,600

,570

,520

,430

,340

,250

,150

1,080

990

862

654

564

531

512

756

819 

749

721

52,098

1,681

-263

June

798

878

1,180

1.620

1,500

1,240

1,030

922

819

687

714

777

648

550

451

390

297

268

268

252

241

237

230

209

172

172

169

216

223

190

17,348

578

-3.12

July

152

134

142

129

*110

158

190

180

169

193

174

149

160

469

570

374

272

223

186

160

149

142

152

147

155

142

117

117

91 

93

8J5

5,682

183

0

/>ug.

80

81

108

85

64

60

59

66

70

72

72

66

66

64

*73

77

70

67

67

64

60

69

93

91

75

67

62

57

58 

60

69

2,192

70.7

0

Sept.

93

94

134

147

114

101

124

129

99

85

73

95

252

183

147

151

234

280

248

199

202

*199

199

337

570

396

288

241

212 

160

5,786

193

+0.04

Adjusted for change in reservoir contents

Mean

Cfsm

In.

867

2.06

2.38

1.53S

3.66

4. OS

365

0.869

1.00

847

-s 2.02

2.32

330

X).786

0.85

446

1.06

1.22

3,001

7.15

7.97

Observed

Calendar year 1955:

Water year 1955-56;

Pe

to 1

*

t

No

Feb.

Max 2,940 Min 59

Max 5,550 Min 57

ak discharge (base, 3,000 cfs).-

2:30 a.m. Apr. 18, 5,350 cfs (7.

Discharge measurement made on th

Jhange in contents, equivalent i

;e. Stage-discharge relation af

-Nov. 5

72 ft);

is day.

i cubic

 ected b

Mean 729

Mean 817

5 to 5: v

Ipr. 30

'eet per

f ice De

50 p.m.) .

6 p.m.)

second,

:. 15 to

1,417

3.37

3.89

575 183 70.7

1.37 0.436 0.168

1.53 O.SOt 0.19

193

0.460

0.51

Adjusted

Mean

Mean

5,080 c

5,900 c

.n Surf

fan. 11

729 Cfsm 1.74 In.

817 Cfsn, 1.95 m.

Fs (6.60 ft) ; 12 p.m. Ap

fs (7.96 ft) .

f Mountain Reservoir.

, Jan. 23-26, Jan. 30 to

23.55

26.45

r. 17

Feb. 4,

6, 17, 18, 20-24, 29, Mar. 1, 18, 21, 22, 26.
186 CONNECTICUT RIVER BASIN

Tarbell Brook near Winchendon, Mass.

Location. Lat 42°42'45", long 72°05'09", on left bank 0.1 mile downstream from Spud Brook, 

0.3 mile downstream from Massachusetts-New Hampshire State line, and 2f miles northwest 

of Winchendon, Worcester County.

Drainage area. 18.2 sq mi.

Records available. May 1916 to September 1956. Prior to October 1950, published as Sip 

Pond Brook near Winchendon.

Gage.--Water-stage recorder. Datum of gage is 872.82 ft above mean sea level, datum of 

1929. May 29 to June 29, 1916, staff gage, June 30 to Dec. 12, 1916, water-stage recorder, and Dec. 13, 1916, to June 26, 1917, staff gage, at site 450 ft downstream at 

same datum.

Average discharge. 40 years, 30.3 cfs.

Extremes. Maximum discharge during year, 472 cfs Apr. 30 (gage height, 10.07 ft); minimum 

1.6 cfs Aug. 18.

1916-56: Maximum discharge, 2,630 cfs Sept. 21, 1938 (gage height, 13.72 ft), from 

rating curve extended above 1,200 cfs on basis of critical-depth studj at control section; minimum, 0.1 cfs Aug. 25, 1924.

Remarks. Records good except those for periods of ice effect, which are fair. Flow regulated by Pearly and Sip Ponds, Damon Reservoirs, and small mill above station.

Revisions (water years).--WSP 781: 1934. WSP 871: Drainage area. WSP 1051: 1928(M), 

1933-34,WSP 1301: 1917(M).

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Jan. 10 Jan. 11 to Sept. 3O

5.2 

5.4 

5.6 

6.0

3.5 

6.6

6.5 43

7.0 71

8.0 157

9.0 287

5.0 1.6

5.2 4.1

5.5 9.6

6.0 24

6.5 44

7.0 68

8.0 144

9.0 262

10.1 480

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Oct.

5.8

4^

5.9

5.7

*5.4

9.4

18

13

14

17

23

19

17

19

62

113

148

199

T78

138

102

83

62

56

53

49

43

41

35

39

52

1,629.8

52.6

2.89

3.33

Nov.

61

61

53

57

127

154

116

94

75

65

66

72

74

82

89

88

99

104

88

76

63

*52

48

42

42

36

32

33

28

26

2,103

70.1

3.85

4.30

Dec.

24

22

18

23

21

26

22

21

19

12

15

20

16

16

15

16

13

12

13

12

11

10

11

7.2

6.8

6.3

11

14

13

7JO

468.3

15.1

0.830

0.96

Jan.

5.6

6.2

10

11

10

11

8.0

7.6

45

230

318

215

170

131

101

76

64

55

44

36

30

28

30

29

22

19

20

*13

12

19

21

1,797.4

58.0

3.19

3.67

Feb.

21

19

18

12

14

20

19

18

18

18

14

16

21

19

18

19

19

12

16

19

19

19

18

16

13

17

22

19

23

516

17.8

0.978

1.05

Mar.

*21

20

14

18

25

22

24

25

24

19

23

28

24

23

24

21

17

23

26

25

27

25

24

20

23

26

24

23

24

27

*14

703

22.7

1.25

1.44

Apr.

18

25

24

25

33

46

62

68

73

68

69

76

88

102

119

162

256

266

*238

202

*173

167

173

149

126

122

114

123

350

462

3,979

133

7.31

8.13

May

362

222

171

144

130

118

103

84

68

67

64

58

56

50

44

39

36

34

29

29

29

25

22

22

23

15

16

35

32

29

32

2,188

70.6

3.88

4.47

June

28

24

48

54

47

36

32

27

20

19

24

18

20

19

16

9.0

6.9

10

12

11

13

12

6.0

5.5

10

11

12

*11

8.1

5,8

575.3

19.2

1.05

1.18

July

5.0

9.7

11

4.9

8.9

8.6

5.8

4.9

9.6

8.7

10

12

10

8.3

6.8

11

13

13

8.6

7.0

5.3

4.9

4.9

*7.2

6.7

5.2

5.3

4.6

4.1

4i3

23-5.1

7.58

0.416

0.48

Aug.

4.7

3.8

3.4

3.2

2.8

2.6

2.6

3.0

2.8

2.5

2.5

2.0

5.2

3.6

2.9

2.5

2.5

2.0

1.8

2^5

3.8

5.1

4.9

2.9

2.5

2.2

4.1

4.1

2.9

4.8

3.4

99.6

3.21

0.176

0.20

Sept.

2.5

2.9

2.8

3.6

*3.6

4.8

4.7

3.0

2.5

5.0

3.2

3.0

4.4

5.2

3.4

5.1

9.2

10

6.4

11

8.1

5.0

5.2

15

13

11

*12

12

7.7

6.4

191.7

6.39

0.351

0.39

Calendar year 1955: Max 199 Mln 1.8 Mean 31.4 Cfsm 1.73 In. 23.43

Water Mater year year 1955-56: 1955-56: Max Max 462 462 Mln Mln 1.8 1.8_____Mean Mean 59.6 39.6 Cfam Cfam 2.18 2.18 In. In. 29.60 29.60

Peak discharge (base. 150 cfs).--Oct. 18 (7:50 to 10:50 a.m.) 204 cfs (8.40 ft); Nov. 6 f4 to 6 

a.m.) 162 cfs (8.05 ft); Jan. 11 (3 to 5 a.m.) 341 cfs (9.48 ft); Apr. 17 (lO to 12 p.m.) 282 cfs 

(9.13 ft); Apr. 30 (12 m.) 472 cfs (10.07 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Dec. 17 to Jan. 9, Jan. 18-21, 24-26, Jan. 28 to 

Feb.-8, Feb. 14, Feb. 16 to Mar. 2, Mar. 6-9, 15-19, 24-29, 31, Apr. 1.
CONNECTICUT RIVER BASIN

Millers River near Winchendon, Mass.

March to May 1917 monthly discharge only,

Location.--Lat 42°41'03", long 72°05'02", on right bank 10 ft downstream from Nolan Bridge, 

a third of a mile downstream from Tarbell Brook, and 2 miles west of Winche-idon, Worcester County.

Drainage area. 83.0 sq mi.

Records available. June 1916 to September 1956. 

published in WSF 1301.

Gage. Water-stage recorder. Concrete control since Oct. 6, 1933. Datum of gage is 

826.66 ft above mean sea.level, datum of 1929. Prior to July 27, 1916, chain gage at 

bridge at same datum.

Average discharge. 40 years, 144 cfs.

Extreme s.--Maximum discharge during year, 1,920 cfs Oct. 19 (gage height, 9.83 ft); minimum dally, 6.6 cfs Aug. 20, 26.

1916-56: Maximum discharge, 8,500 cfs Sept. 22, 1938 (gage height, 21.55 ft, from 

floodmarks), from rating curve extended above 2,900 cfs on basis of computation of peak 

flow over dam; practically no flow because of regulation Sept. 20, 1918, Jan. 14, 1925.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. Plow regulated by powerplant and by Lake Monomonac and other reservoirs.

Revisions (water years).--WSF 451: 1916. WSF 871: 

1920-21(M),

Drainage area. WSP 1051: 1919,

1922-24, 1928(M), 1933-34.

Rating table, water year 1955-56, except periods of ice effect (gage

height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used Oct. 27-30, Nov. 25, 26, Jan. 20-24)

3.59

3.6

3.7

3.8 

4.0 

4.2

4.5

5.0 

6.0 

7.0 

8.0 

10.0

139

311

524

780

1,120

2,000

Discharge, in cubic feet per second, water year October 1955 to September 195S

Day

1

2

3

4

5

6

7

8

9

10

1112-

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

in.

Oct.

45

99

140

129

 121

96

63

94

134

151

135

62

109

120

580

1,230

1,590

1,810

1.880 

1,660

1,330

978

658

468

412

376

328

319

304

301

412

16,134

520

6.27

7.23

Nov.

438

426

380

433

726

751

658

555

466

410

422

511

496

520

513

462

515

496

462

414

370

357

 262

202

231

231

220

205

177

170

12,479

416

5.01

5.59

Dec.

170

164

151

167

174

155

100

56

58

76

67

67

58

53

*55

50

50

52

49 

43

37

36

32

30

32

31

32

38

38

31

2,180

70.3

0.847

O.98

Jan.

26

24

28

32

32

30

26

27

800

1,300

1.560

1,120

900

700

620

560

458

390

370 

325

285

260

240

230

220

215

 210

190

185

180

165

11,508

371

4.47

5.16

Feb.

150

135

120

62

67

68

82

80

78

74

70

72

78

74

76

140

135

136

140 

145

115

60

62

63

84

177

170

*98

90

2,901

100

1.20

1.30

Mar.

86

84

84

97

105

97

172

246

205

115

105

118

108

106

108

150

160

170

160 

165

170

170

170

175

170

165

165

160

160

*155

151

4,452

144

1.73

1.99

Apr.

136

139

145

180

291

376

426

384

360

374

407

446

492

548

586

786

1,060

 1,040

972 

858

780

763

771

706

650

624

593

624

1,000

1 , 280

17,797

593

7.14

7.97

May

1.520

1,270

1,060

849

703

588

528

470

422

410

 392

370

355

339

317

301

281

260

224

205

169

143

78

72

74

60

65

120

110

100 

110

11,765

380

4.58

5.27

June

100

90

160

190

rro

150

 111

92

78

72

78

70

67

78

70

55

80

84

65

50

42

59

30

27

28

28

29

30

30

27

2,200

73.3

0.883

0.99

July

23

24

22

17

20

21

21

24

26

26

24

23

21

25

31

30

27

24

*21 

19

17

16

16

16

16

15

14

12

11

12

11

625

20.2

0.243

0.28

Aug.

11

9.7

9.7

8.7

8.7

8.2

8.2

7.8

8.2

9.2

11

10

11

11

9.2

8.2

8.2

7.8

7.0 

6.6

7.8

9.2

9.2

7.8

7.4

6.6

7.8

*7.9

7.4

8.4 

8 . £

267.1

8.62

0.104

0.12

Sept.

7.4

9.8

12

13

*14

16

20

30

36

39

40

43

49

56

65

70

82

129

134 

134

125

121

118

158

139

126

 116

129

108

95

2,252.2

74.4

0.896

1.00

Calendar year 1955 : Max 1,880 Min 9.7 Mean 178 Cfsm 2.14 In. 29.03

Water year 1955-56 : Max 1,880 Min 6.6 Mean 231 Cfsm 2.78 In. 37.88

Peak discharge (base, 690 cfs). --Oct. 19 (8:30 a.m.) 1.920 cfs (9.83 ft): Nov. 6 (3 to 9 a.m.) 763

cfs (6.94 ft); Jan. 10 (7 p.m.) 1,540 cfs (9.01 ft); Apr. 17 (7 to 10 p.m.) 1,1OO cfs (7.95 ft);

May 1 (7 to 8 p.m.) 1,340 cfs (8.55 ft).

Feb. 16, 17, 19, 21-24, 28, 29, Mar. 5, 10, 11, 16, 17.

; discharge 

when availire River 

, 29, 31,
108 CONNECTICUT RIVER BASIN

Priest Brook near Winchendon, Mass.

Location.--Lat 42°40'57", long 720 06'56", on right bank 100 ft downstream from highway

bridge , 3 miles upstream from mouth, and 3-| miles west of Winchendon, Worchester County.

DraUiage area.--19.4 sq mi.

Records available.--Hay 1916 to September 1956. October 1917 to July 1918 monthly discharge only, published in WSP 1301.

Gage.--Water-stage recorder. Concrete control since September 1936. Datum of gage is 

849.67 ft above mean sea level, datum of 1929. Prior to Mar. 22, 1933, staff gage and 

Mar. 22, 1933, to Sept. 11, 1936, float gage, on left bank at same datum.

Average discharge. 40 years, 33.5 cfs.

Extremes.--Maximum discharge during year, 568 cfs Apr. 30 (gage height, 5.77 ft), from 

rating curve extended above 330 cfs on basis of contracted-opening determinations at 

gage heights 8.4 and 9.90 ft; minimum, 0.7 cfs Aug. 29.

1916-56: Maximum discharge, 3,000 cfs Sept. 21, 1938 (gage height, 9.90 ft), from 

rating curve extended above 330 cfs by method described above; minimum, 0.08 cfs several 

times in September 1929.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. Plow regulated by ponds and mill above station.

Revisions (water years).--WSP 451: 1916. WSP 871: Drainage area. WSF 1051: 1919, 

1922-24. WSP 1301: 1917(M), 1919-24(M), 1926-27(M), 1929(M), 1931-35(M).

Rating tables, water year 1955-56, except periods of lee effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1-17 Oct. 18 to Sept. 3O

2.8 

3.0 

3.5 

4.0 

4.5

159

250

2.2

2.3

2.7

1.1 

2.4

15

3.5

4.0 

5.0 

6.0

159

358

650

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mem

In.

Oct.

16

13

ii

12

*15

17

26

32

32

28

23

18

15

14

36

120

195

292

220

160

115

80

66

58

53

48

45

41

39

37 

58

1,935

62.4

3.22

3. 71

Nov.

69

70

59

62

130

190

135

90

70

65

68

72

76

84

90

90

100

110

95

78

*68

61

55

44

39

39

36

34

30

30

2,239

74.6

3.85

4.29

Dec.

28

24

23

23

26

30

31

23

20

19

18

17

16

16

*17

16

15

14

13

12

10

11

9.1

8.0

8.8

8.4

7.7

6.7

6.4

6.1 

5.6

488.8

15.8

0.814

0.94

Jan.

5.1

4.4

4T6

4.6

4.8

4.8

4.8

5.5

60

319

365

23T

152

103

91

75

53

40

34

32

28

24

22

19

19

17

16

14

13 

14

14

1,793.6

57.9

2.98

3.44

Feb.

13

I?

13

13

14

14

17

19

18

18

17

17

17

17

17

17

17

17

17

18

16

14

14

15

23

27

*29

28

27

516

17.8

0.918

0.99

Mar.

25

26

25

27

28

28

32

32

31

29

27

-27

26

25

24

23

24

24

24

26

25

24

23

24

23

23

22

20

20 

20

20

111

25.1

1.29

1.49

Apr.

20

21

*24

32

44

68

92

78

82

94

102

105

120

140

162

218

368

351

*285

216

173

183

190

173

135

143

130

157

425 

526

4,857

162

8.35

9.31

May

353

234

171

*124

135

119

106

91

76

62

50

41

40

44

42

38

34

34

29

26

26

29

26

29

24

18

20

40

40

34

2,163

69.8

3.60

4.15

June

34

28

56

94

65

54

*41

32

25

22

22

20

18

20

14

10

9.4

8.4

7.4

7.2

7.0

7.4

6.4

6.4

7.1

7.2

1~5.9

8.8 

7.4

663.0

22.1

1.14

1.27

July

6.1

5.9

5.6

4.8

4.8

7.0

7.0

5.9

6.4

6.4

6.4

6.1

6.4

~9.4 11

8.0

7.4

6.4

*5.6

5.1

5.1

5.3

4.8

4.6

4.4

3.9

3.3

3.3

3.1 

2 . 6

2.4

174.5

5.63

0.290

0.33

Aug.

2.4

270

1.7

.1.4

1.4

1.7

2.0

2.0

1.8

1.8

1.7

1.4

1.3

1.4

1.3

1.3

1.2

1.1

1.2

.9

1.0

1.1

1.1

1.1

1.0

.9

.9

.8

*.8

i!o

41.5

1.34

0.069

0.08

Sept.

1.2

1.7

2.6

2.0

1.5

1.7

5.1

2.9

2.0

1.5

1.4

1.4

2.3

3.3

3.1

5.3

8.0

7.4

5.9

5.6

5.3

4.6

4.8

13

12

8.8

*7.4

28

2T 

12

185.8

6.19

0.319

0.36

Calendar year 1955: Max 292 Mln 1.2 Mean 37.4 cfsm 1.93 In. 26.19

Water year 1955-56: Max 526 Mln 0,8 Mean 43.3 Cfsm 2.23 In. 30.36

Peak discharge (base, 150 efs).--0et. 18 (12:50 to 2 a.m.) 559 efs (4.92 ft); Nov. 5 or 6 (time 

unknown) about 200 cfs; Jan. 10 (11 p.m.) 429 cfs (5.28 ft); Apr. 18 (12 m.) 424 cfs (5.26 ft); Apr. 

30 (8 to 9 a.m.) 568 cfs (5.77 fb).

* Discharge measurement made on this day.

Note. No gage-height record Oct. 19 to Nov. 21; discharge estimated on basis of 1 discharge measurement, weather records, recorded range In stage, and records for Millers River near Winchendon, 

Tarbell Brook near Winchendon, and Ware River near Barre. Stage-discharge relation affected by ice 

Nov. 30 to Dec. 3, Dec. 13-15, 17, 19, 20, 22, 23, Jan. 9, 17-19, Feb. 21-27, Mar. 16-21, Apr. 11-14. 

Discharge In cubic feet per second per square mile and runoff in Inches may not represent natural 

flow because of regulation.
CONNECTICUT RIVER BASIN 189

Millers River at South Royalston, Mass.

Location. Lat 42°37'4V", long 72°09'03", on right bank 500 ft downstream from bridge in 

South Royalston, Worcester County, 0.4 mile downstream from Beaver Brook, and l.Vmiles 

downstream from Birch Hill Dam.

Drainage area. 187 sq mi.

Records available.--July 1939 to September 1956.

Gage. Water-stage recorder. Datum of gage is 792.00 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers).

'Average discharge.--17 years, 321 cfs (adjusted for storage).

Extremes.--Maximum discharge during year, 2,050 cfs May 4 (gage height, 7.22 ft); minimum 

daily, 9.3 cfs Aug. 4.

1939-56: Maximum discharge, 4,400 cfs Apr. 13, 1940 (gage height, 8.40 ft); minimum daily, that of Aug. 4, 1956.

Maximum stage known, 15.9 ft Sept. 21 or 22, 1938, from floodmarks.

Remarks. Records excellent except those for periods of ice effect, which are fair. Flow 

regulated by Lake Monomonac and other reservoirs, by mills and powerplants prior to 

1955, and at high'flow by Birch Hill Reservoir since 1941 (see p. 230).

Rating table, water year 1955-56; except periods of Ice effect (gage

height, In feet, and discharge, In cubic feet per ond)

3.1 

3.3 

3.5

4.5

8.5

13

147

5.0 

5.5 

6.0 

7.0 

7.3

325

570

1,790

2,150

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6 

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

(t)

Oct.

150

169

205

208

190

183 

280

343

435

405

366

226

202

252

189

90

39?

1,530

1,850

*1 . 90&

1,890

1,870

1,860

1,830

1,720

1,660

1,360

910

703

620 

715

24,708

797

+4.89

Nov.

831

845

810

784

784

873 

1.430

1,340

1,270

1,190

1,110

1,060

1,050

1,030

1,030

1,010

992

985

948

888

810

727

649

545

520

505

475

*450

420

590

25,751

858

-4.24

Dec.

366

348

334

343

390

3J5 

270

210

190

200

185

175

160

150

158

145

150

140

130

115

100

95

84

82

92

98

94

90

82

76 

23,

5,519

178

-1.31

Jan.

68

61

63

71

75

71 

69

71

600

910

1,100

1,020

1,460

1.550

1,540

1,470

1,350

1,090

1,210

935

622

880

637

530

340

406

430

350

325

307 

290

19,901

642

+0.86

Feb.

265

260

265

240

175

160 

*180

195

196

190

183

186

190

186

190

248

264 233'

275

270

255

185

170

165

180

380

380

295

245

6,606

228

-0.12

Mar.

225

226

233

298

348

312 

390

515

475

405

334

343

*338

316

302

280

250

385

450

365

330

345

366

275

325

325

300

280

284

298 

280

10,198

329

+0.11

Apr.

276

284

330

415

614

817 

962

1,000

925

902

910

962

1,050

1,130

1,210

1,390

*1,570

1.7OO

1,770

1,790

1,790

1.800

1,750

1,760

1,670

1,590

1,500

1,430

1,510

1,140

35,947

1,198

+ 98.8

May

960

1,660

2,010

2,020

1,980

1,890 

1,720

1,550

1,360

1,150

940

764

679

620

576

540

505

475

435

395

366

*307

123

149

436

222

212

294

302

256 

260

25,156

811

-95.6

June

284

320

430

586

560

445 

338

264

219

199

208

196

171

171

158

132

129

143

123

109

101

101

93

86

84

82

82

111

107

*94

6,12P

204

-0.77

July

82

76

72

68

64

84 

86

82

84

91

82

73

73

110

125

107

97

86

75

66

62

63

64

61

60

59

54

52

48

44 

*44

2,2L-i

71.0

-0.11

Auf.

42

36

12

9.3

2§

43 

35

34

33

34

40

39

36

39

36

33

31

31

30

29

29

36

3S

34

31

23

23

23

29

31 

34

1,04?. 3

33.5

o

Sept.

39

40

60

60

53

51 

91

90

80

*73

71

70

78

79

91

107

134

186

193

186

183

163

160

292

516

256

216

202

222

171

4,013

334

+0 . fcC

Adjusted for change In reservoir contents

Mean 

Cf sm 

In.

802 

4.29 

4.94

854 

4.57

5.10

Calendar year 1955 : 

Water year 1955-56 :

177 

0.947 

1.09

643 

3.44 

3.96

228 

1.22 

1.31

329

1.76 

2.03

1,297 

6.94 

7.74

716 

3.83 

4.41

Observed

Max 1,900 Mln 23 ' Mean 380 

Max 2,020 Mln 9.3 Mean 457

203 

1.09 

1.21

73.9 

0.395 

0.46

33.6 

0.180 

0.21

134 

0.717 

0.80

Adjusted

Mean 380 Cfsm 2.03 In. 27.57 

Mean 457 Cfsm 2.44 In. 33.26

Discharge measurement made on this day. 

t Change In contents, equivalent In cubic feet per second, In Birch Hill Reservoir. 

Note.--Stage-discharge relation affected by Ice Nov. 29, 30, Dec. 7-14, Dec. 16 to Jan. 10, Jan. 24 

25, 27-29, Jan. 31 to Feb. 6, Feb. 8, 19-24, 26, Feb. 28 to Mar. 1, Mar. 9, 17-22, 24-27.
190 CONNECTICUT RIVER BASIN

East Branch Tully River near Athol, Mass.

Location. Lat 42°38'32", long 72°13'34", on right bank 300 ft downstream from Tully Dam, 

1.3 miles downstream from Lawrence Brook, and 3^ miles north of Athol, Worcester County.

Drainage area. 50.4 sq mi.

Records available. October 1915 to September 1956. October 1915 to May 1916 monthly discharge only, published in WSP 1301.

Gage. Water-stage recorder and concrete control. Datum of gage is 613.71 ft above mean 

sea level, datum of 1929 (Corps of Engineers benchmark). Prior to Oct. 26, 1948, staff 

gage at site 0.2 mile upstream at datum 14.40 ft higher.

Average discharge. 41 years, 84.8 cfs (adjusted for storage).

Extremes.--Maximum discharge during year, 560 cfs May 8 (gage height, 4.74 ft); minimum, 

0.04 cfs Jan. 7, 8; minimum daily, 0.06 cfs Jan. 4-6.

1915-56: Maximum discharge, 5,140 cfs Sept. 21, 1938 (gage height, 8.60 ft, from 

floodmarks, site and datum then in use), from rating curve extended ebove 1,500 cfs on 

basis of determination of peak flow by computation of flow over dam end contractedopening determination; minimum, 0.03 cfs Jan. 4, Mar. 3, 1949, Aug.'21, 22, 1955; minimum daily, 0.04 cfs Aug. 21, 1955.

Remarks. Records excellent except those for period of no gage-height record, which are 

Fair. Flow regulated by Tully Reservoir since 1948 (see p. 230).

Revisions (water years).--WSP 451: 1916. WSP 891: Drainage area. WSF 1051: 1916(M), 

r9"2o\WSP 1301: T917-35(M) , 1937(M) .

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

In cubic feet per second)

Oct. 1 to Jan. 16 Jan. 17 to Sept. 30

2.5

2.6

2.7

0.06 

.1 

.4 

.9

2.8

6.2

11

2.8

3.1

18

52

101

172

259

450

2.7 

2.9

0.7

.9

2.8

6.5

12

29

3.2

3.6 

4.0 

4.5 

5.0

147

259

450

700

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

E

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

35

35

27

22

18

21

71

114

114

95

72

56

44

40

18

.1

56

247

292

292

*289

282

269

244

253

205

125

97

82 

79

133

3,727.1

120

+1.27

Nov.

183

205

199

191

87

129

381

432

331

240

199

199

216

256

247

247

247

250

247

231

211

147

145

152

142

105

95

80

82 

74

5,950

198

+5.56

Dec.

69

68

68

*68

77

90

65

65

58

49

49

46

35

36

35

35

35

35

39

30

21

21

21

14

9.0

9.0

9.0

9.0

18 

26

26

1,235.0

39.8

+0.19

Jan.

26

20

4.9

.06

Toe

.06

.08

.3

*66

72

80

84

88

222

338

389

441

350

121

60

60

60

33

44

51

38

37

37

37

40 

28

2,827 . 46

91.2

-0.19

Feb.

21

22

22

22

22

32

39

39

*39

39

39

39

39

39

39

40

40

40

40

40

40

40

40

40

44

55

56

56

TL_

1,134

39.1

+2.47

Mar.

80

79

77

77

76

62

55

65

80

80

80

80

65

39

51

66

*66

65

65

65

65

65

79

86

82

80

79

77

74

71 

66

2,197

70.9

-7.24

Apr.

63

¥9

69

88

140

175

202

256

285

269

253

262

285

292

306

350

373

276

289

289

*289

289

292

296

377

490

495

477

486 

305

8,387

£80

+72.2

May

210

215

215

220

220

260

36O

500

540

520

490

470

45O

440

410

350

280

180

92

84

79

*66

65

63

59

53

59

84

80

71

74

7,259

234

-71.5

June

79

71

96

142

147

128

99

74

59

52

58

51

46

38

32

28

25

22

15

12

11

12

11

9.8

9.8

8.0

7.5

14

16 

12

1,385.1

46.2

-0.12

July

*9.2

7.5

6.5

5.2

4.8

8.0

12

11

11

12

10

7.5

6.5

19

31

20

14

10

7.0

5.2

4.8

5.2

5.6

5.6

4.8

4.1

3.8

3.1

2.6 

2.1

1.9

261.0

8.42

-0.04

Aug.

*1.6

1.6

1.4

1.2

1.1

1.1

1.1

1.1

1.1

1.1

.9

.9

.9

.9

.9

.9

.8

.8

.8

.8

.8

.9

.9

.9

.9

.8

.8

.7

.7 

.7

.9

30.0

0.97

0

Sept.

iJ.

2.4

3.1

3.1

2.4

2.2

7.0

6.5

3.8

2.6

1.9

1.7

*2.1

6.5

8.0

9.5

19

20

14

12

11

9.8

9.2

26

39

26

18

13

11 

9.2

301.7

10.1

+0.04

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

121 

2.40 

2.78

204 

4.0E 

4.53

Calendar year 1955: 

Water year 1955-56:

40.0 

0.794 

0.92

91.0 

1.81 

2.08

41.6 

0.825 

0.89

63.6 

1.26 

1.46

352 

6.98 

7.79

163 

3.23 

3.72

Observed

Max 432 Min 0.04 Mean 90.8 

Max 540 Min 0.06 Mean 94.8

46.1 

0.915 

1.02

8.39 

0.166 

0.19

0.97 

0.019 

0.02

10.1 

0.200 

0.22

Adjusted

Mean 90.6 Cfam 1.80 In. 24.42 

Mean 94.8 Cfsm 1.88 In. 25.60

Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Tully Reservoir.

Note. No gage-height record May 1-22; discharge estimated on basis of 1 discfarge measurement, 

weather records, recorded range in stage, and records of pond elevations and gate operations at 

Tully Reservoir.
CONNECTICUT RIVER BASIN

Moss Brook at Wendell Depot, Mass.

Location.--Lat 42°36'10", long 72°21'36", on left bank a quarter of a mile upstream from 

mouth and a quarter of a mile north of Wendell Depot, Franklin County.

Drainage area.--18.3 sq mi.

Records available.--June 1909 to August 1910, June 1916 to September 1956. Published as 

"at Wendell" 1909-10.

Gage. Staff gage read twice daily except once daily during some winter months. Datum of 

gage is 508.9 ft above mean sea level, datum of 1929. Prior to April 1910, staff gage 

at site 1,200 ft downstream at different datum. April to August 1910 staff gage and 

sharp-crested weir at site 300 ft downst.ream at different datum.

Average discharge.--40 years (1916-56), 21.2 cfs.

Extremes. Maximum discharge during year, 293 cfs Apr. 17 (gage height, 3.74 ft, from 

graph based on gage readings); minimum, 1.0 cfs Aug. 29.

1916-56: Maximum discharge, 1,540 cfs Mar. 19, 1936 (gage height, 6.30 ft, from 

floodmarks), from rating curve extended above 400 cfs on basis of slope-area determinations at gage heights 5.62 and 6.30 ft; minimum, 0.2 cfs Sept. 4,5, 1929.

Remarks. Records good except those for periods of ice effect, which are fair.

Revisions (water years).--WSP 821: 1936(M). WSP891: Drainage area. WSP 105]: 1917, 

1919-24. 1929(m).WSP 1231: 1917-21(M), 1922, 1923(M), 1924-26, 1927-28(M), 1929, 

1930-35(M), 1939(M), 1941(M), 1944(M), 1949(M).

Rating table, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

0.97 

1.0 

1.2 

1.4

1.6

1.0

1.1

10

2.5 

3.0 

3.5

18

36

72

138

235

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

10

9.3

7.3

6.0

5.6

7.5

32

39

29

20

14

10

9.3

9.3

20

41

81

119

»67

50

36

29

24

21

26

26

23

20

17 

21

181

1,010.3

32.6

2.65

3.05

Nov.

128

60

44

48

176

118

76

54

44

40

44

64

63

62

57

54

64

63

63

52

35

31

30

28

27

25

24

22

20

11

1,635

54.5

4.43

4.94

Dec.

17

16

17

*24

33

31

24

16

14

12

11

11

10

10

11

10

9.5

9.0

8.5

7.5

7.0

6.5

5.5

5.0

5.4

5.8

5.4

4.5

4.2

3.7

3.4

357.9

11.5

0.935

1.08

Jan.

3.1

2.6

278

3.0

3.1

3.1

3.2

3.5

50

110

70

52

44

29

25

21

22

22

20

17

16

14

12

11

10

9.4

9.0

8.0

8.4

8.4

9.0

621.6

20.1

1.63

1.88

Feb.

8.0

7.6

8.0

8.4

8.4

8.4

10

*12

12

13

9.8

11

11

11

10

9.6

11

11

11

11

10

9.0

9.0

10

12

14

17

16

14

313.2

10.8

0.878

0.95

Mar.

13

12

14

18

17

18

25

22

21 20

19

19

19

19

*18

17

171 7

17

17

14

14

14

15

14

12

11

10

IT

11

11

496

16.0

1.30

1.50

Apr,

10

9.6

14

20

40

62

116

96

69

49

52

64

76

82

94

179

217

*141

112

88

80

84

94

91

76

76

68

83

155

161

2,558.6

85.3

6.93

7.74

May

~SS 132

74

62

53

45

40

36

31

30

29

26

24

22

20

19

18

16

16

15

14

13

12

*12

11

10

T2

18

14

12

15

939

30.3

2.46

2.84

June

18

20

59

60

36

24

17

13

11

11

13

11

9.0

7.6

5.8

5.1

5.3

4.5

3.9

3.6

3.3

3.4

3.2

3.0

2.8

2.6

276

3.8

3.2

*2 .8

368.5

12.3

1.00

1.11

July

2.6

2.4

2.1

2.0

2.1

3.9

3.8

3.2

3.9

3.4

2.8

2.4

2.4

8.6

8.0

4.5

3.4

2.8

2.4

2.2

2.0

3.2

2.8

2.6

2.4

2.4

2.1

2.0

1.8

1.6

1.6

93.4

3.01

0.245

0.28

Aug.

1.5

*TT4

1.3

1.3

1.3

1.3

1.3

1.2

1.2

1.3

1.4

1.3

1.3

1.4

1.3

1.2

1.3

1.5

1.4

1.3

1.3

1.4

1.4

1.3

1.2

1.2

1.1

1.1

Itf

1.4.

40.1

1.29

0.105

0.12

Sept.

1.6

1.6

3.0

2.2

1.7

l.C

3.0

2.1

1.7

1.5

1.4

1.4

*2.3

1.6

2.0

6.5

7.2

4.5

3.2

3.5

3.2

2.6

2.9

13

8.3

4.6

3.4

3.1

3.0

2.6

100.3

3.34

0.272

0.30

Calendar year 1955: Max 426 Min 1.1 Mean 27.6 Cfsm 2.24 In. 30.41

Water year 1955-56: Max 217 Min 1.0 Mean 23.3 Cfsm 1.89 In. 25.79

Peak discharge (base, 160 cfs). --Oct. 31 (8 p.m.) 283 cfs (3.70 ft); Nov. 5 (ll a.m.) 224 cfs

(3.45 ft); Apr. 17 (I a.m.) 293 cfs (3.74 ft); Apr. 29 (12 m. ) 180 cfs (3.23 ft).

* Discharge measurement made on this day.

Note. Stage -discharge relation affected by ice Nov. 26, 27, Dec. 7 to Jan. 11, Jan. 17 to Feb. 7, 

Feb. 21-24, Feb. 27 to Mar. 1, Mar. 4-8, 11, 12, 17-19, 24-26.
19P ' CONNECTICUT RIVER BASIN 

Mlllors River at Erving, Mass.

Location.--Lat 42°35'51", long 72°26'19", on right bank 75 ft downstream from bridge at 

Parley, 0.6 mile upstream from Mormon Hollow Brook, 2.4 miles downst-eam from Erving, 

Franklin County, and 5.5 miles upstream from mouth.

Drainage area. 375 sq ml.

Records available. August 1914 to September 1956.

Gage.--Water-stage recorder. Altitude of gage Is 380 ft (from topographic map). Prior 

to June 30, 1915, staff gage, June 30, 1915, to Sept. 20, 1938, water-stage recorder, 

and Sept. 21 to Dec. 31, 1938, staff gage, at site 2.2 miles upstream at different 

datum. Jan. 1 to Mar. 29, 1939, staff gage and Mar. 30, 1939, to Seit. 12, 1941, 

water-stage recorder, at site 0.4 mile downstream at different datum.

Average discharge.--42 years, 636 cfs (adjusted for storage).

Extremes.--Maximum discharge during year, 4,550 cfs Apr. 17 (gage height, 6.86 ft); minimum daily, 31 cfs Aug. 5.

1914-56: Maximum discharge, 29,000 cfs Sept. 22, 1938 (gage height, 13.37 ft, from 

floodmarks, site and datum then in use), mean of two slope-area determinations; practically no flow at times during 1915 and 1916 because of regulation; minimum daily, 

8 cfs Sept. 6, 1926.

Remarks.--Records excellent except those for periods of ice effect or no gage-height record, which are fair. Flow regulated by powerplants , Lake Monomonac and other reservoirs, and high flow by Birch Hill and Tully Reservoirs (see p. 230).

Revisions (water years).--WSP 641: 

1933(M).WSP 1301: 1915(M).

1920(M). WSP 756: Drainage area. WSP 781; 1928(M),

Rating table, water year 1955-56, except periods of Ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.5 

1.7 

1.9 

2.2 

2.5

126

199

3.0 

4.0 

5.0 

7.0

396

1,040

1,870

4,790

Discharge, in cubic feet per second, water year October 1955 to Septsmber 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

2g

21

22

23

24

25

26

27

28

iO 

31

\ jtal

F,_an

Oct.

347

283

32T

329

303

341

646

770

848

796

705

498

418

456

705

718

1,410

2,460

*2,870

2,880

2,690

2,520

2,370

2,410

2,350

2,160

1,850

1,350

1,050

1,040 

1,970

39,868

1,286

+ 6.16

Nov.

1,720

1,550

1,440

1,600

2.510

1.810

2,180

2,380

2,140

1,870

1,830

1,880

1,850

1,980

1,950

1,840

1,950

1,780

1,640

1,500

1,480

1,320

1,170

1,030

1,030

949

861

868

802

744

47,654

1,588

+1.31

Dec.

731

692

640

*672

835

828

724

600

475

425

390

380

340

330

350

3£0

320

305

290

250

220

210

180

170

180

190

180

165

160

160 

150

11,862

383

-1.12

Jan.

140

120

110

TT5

120

115

115

120

1,000

1,500

1,550

1,500

1,850

1,960

2,100

2,100

2,050

1,700

1,620

1,340

647

1,200

970

679

601

386

816

575

492

523 

490

28,604

923

+0.67

Feb.

420

410

420

340

500

340

370

400

360

340

330

*340

355

355

355

400

410

440

450

520

430

340

330

330

340

582

705

580

460

11,752

405

+2.35

Mar.

460

470

480

568

672

620

861

970

880

835

672

738

738

634

588

.560

*480

580

620

580

580

620

640

580

540

630

560

545

545 

582

575

19,403

626

-7.13

Apr.

568

608

705

828

1,300

1,790

2,110

1,970

1,920

1,820

1,860

2,000

2,240

2,450

2,590

3,470

4.450

*3,740

3,500

3,240

3,120

3,110

3,120

3,020

2,880

2,920

2,880

2,980

3,300

3,500

73,969

2,466

+ 171

May

2,090

2,440

2.940

2,880

2,810

2,620

2,590

2,450

2,320

2,070

1,820

1,590

1,430

1,310

1,290

1,180

1,080

942

783

672

666

601

*510

307

626

486

401

568

608 

510

568

43,158

1,392

-167

June

608

542

949

1.150

1,000

868

738

575

474

428

450

439

372

338

299

279

267

271

243

214

194

183

167

160

162

153

155

160

180 

*160

12,158

405

-0.89

July

148

135

126

118

122

133

150

146

167

162

150

130

258

188

186

237

106

134

136

122

102

124

133

118

106

104

130

86

85 

97

81

4,193

135

-0.15

Aug.

78

71

64

33

31

93

86

76

70

62

45

60

87

*74

65

67

62

45

60

78

70

64

66

60

43

58

72

66

60 

60

68

1,994

64.3

0

Sept.

64

66

110

100

86

82

150

135

115

115

100

100

115

120

110

*153

202

220

243

243

232

205

202

474

480

391

316

283

287 

253

5,752

192

+0.54

Adjusted for change In reservoir contents

Mean 

Cf am 

In.

1,292 

3.45

3.97

1.59C

4.24 

4.73

Calendar year 1955: 

Water year 1955-56:

382 

1.02 

1.17

923 

2.46 

2.84

408 

1.09 

1.17

619 

1.65 

1.90

2,637 

7.03 

7.84

1,225 

3.27 

3.77

Observed

Max 2,880 Min 45 Mean 744 

Max 4,430 Min 31 Mean 821

404 

1.08 

1.20

135 

0.360 

0.42

64.3 

0.171 

0.20

192 

0.512 

0.57

Adjusted

Mean 743 Cfsm 1.98 In. 26.89 

Mean 821 Cfsm 2.19 In. 29.78

* Discharge measurement made on this day.

t Change in contents, equivalent In cubic feet per second, in Birch Hill and Tully Reservoirs.

Mote.--No gage-height record Aug. 17 to Sept. 14; discharge- estimated on basis of weather records, 

recorded range in stage, and records for other stations in Millers River basin. Stage-discharge relation affected by ice Dec. 8 to Jan. 13, Jan. 31 to Feb. 25, Feb. 28 to Mar. 2, Mar. 16-29.
CONNECTICUT RIVER BASIN 19; 

Connecticut River at Turners Falls, Mass.

Location.--Lat 42°36'40", long 72°33'20", at dam of Western Massachusetts Electric Co., 

at Turners Falls, Franklin County, 0.2 mile upstream from Falls River.

Drainage area.--7.163 sq mi.

Records available. January 1915 to September 1956.

Average discharge. 41 years, 11,970 cfs (adjusted for storage).

Remarks.--Discharge computed by adding flow over and through dam, flow for factories 

through canal that diverts around dam, and flow through power stations 1 and 2 of 

Western Massachusetts Electric Co. Flow regulated by powerplarits and by First Connecticut and Second Connecticut Lakes, Lake Francis, Comerford Station Pond and Moore 

Reservoir (see p. ?30), and other reservoirs (combined usable capacity, about 24j billion cubic feet).

Cooperation.--Records furnished by Western Massachusetts Electric Co. 

Revisions (water years). WSP 741: 1932. WSP 891: Drainage area.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6 

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

1,120

452

4,460

4,180

3,950

5,360 

9,360

4,490

5,340

6,070

5,800

4,240

5,390

8,160

17,600

19,400

23,500

25,400

15,300

14,800

14,500

10,500

4,950

9,680

10,800

9,600

10,200

11,500

7,800

7,040

25.700

306,642

9,892

-222

Nov.

21,500

16,800

15,100

15,700

28,100

28,500 

24,000

21,100

17,400

15,800

16,200

17,000

15,000

15,100

16,900

18,300

17,800

17,000

16,000

13,300

11,000

12,100

11,700

9,140

9,880

11,500

5,790

8,550

8,950

7,630

 

462,840

15,430

+1,056

Dec.

7,620

7,450

5,010

5,080

9,150

9,790 

8,570

6,960

6,300

2,370

1,730

6,200

5,620

5,580

5,960

5,880

3,330

1,750

5,830

6,140

4,450

3,080

2,800

,930

,340

,680

,930

,800

,770

,090

2,250

152,440

4,917

-514

Jan.

266

1,480

4,350

3,510

3,320

3,730 

2,030

1,200

7,800

15,000

22,000

23,700

24,60O

23, 800

16,800

15,100

14,200

11,500

9,640

9,000

5,830

4,140

9,200

7,800

8,020

5,980

6,170

4,180

3,340

6,580

5,760

280,026

9,033

+847

Feb.

6,040

5,980

6,030

4,550

1,570

6,700 

6,820

6,700

6,490

6,750

5,920

3,800

6,170

5,820

6,480

6,240

6,820

3,850

1,700

7,040

6,500

4,080

6,060

5,440

4,810

4,980

7,200

8,250

7,990

 

166,760

5,750

-1,000

Mar.

7,670

7,320

6,970

2,810

9,380

9,200

10 , 400

8,310

8,860

6,780

5,30O

7,090

6,750

7,040

8,020

7,500

4,090

" 2.170

6,990

5,780

6,610

6,450

7,020

6,690

4,840

7,180

7,550

5,700

6,740

5,930

5,680

208,820

6,736

-1,156

Apr.

2,540

7,420

6,980

8,840

13,700

31,000 

38,100

34,800

29,300

25,500

24,500

29,900

36,800

37,100

37,600

40,700

71,000

74,000

62,700

50,600

45,700

40,300

36,500

34,300

33,200

31,800

29,800

32,700

63,800

78,400

-------

1,089,580

36,320

+3,739

May

79,200

63,300

57,800

58,200

55,600

52,300 

47,800

43,200

38,500

33,400

35,400

32,700

31,500

32,000

32 , 800

34,400

32,000

27,500

22,900

18,500

17,600

14,000

11,400

12,300

12,700

13,200

13,200

24,500

35,400

31,900

21,800

*1,037

33,450

+1,250

June

17,500

18,900

26,700

37,400

29,100

20,000 

17,900

17,900

16,300

14,100

9,790

10,800

13,100

11,200

9,590

7,950

4,650

5,420

6,590

6,780

5,370

5,250

145

323

5,090

6,300

6,220

5,850

7,440

2,160

 

345,818

11,530

+303

July

246

5,950

3,130

138

5,170

7,250

1,880

890

6,930

9,520

10,300

10,200

7,120

9,970

12,600

11,500

7,850

7,760

8,110

6,850

5,000

2,610

4,470

4,670

4,700

5,870

6,470

4,270

138

5,140

4,000

180,702

5,829

-160

Aug.

3,640

3,590

3,160

555

424

2,820 

3,400

3,420

2,630

3,890

1,160

191

3,290

2,060

3,250

2,810

3,510

390

138

3,160

3,280

3,000

 2 , 930

3,2-70

138

138

3,000 2,eoo

3,120

3,C30

6,570

78,564

2,534

-555

Sept.

6,920

5,750

4,110

7,780

8,050

6,040 

6,090

2,960

652

4,560

4,470

4,810

5,900

4,780

158

158

7,180

7,150

8,440

6,940

7,550

8,080

2,210

8,520

14,900

14,400

10,500

8,000

1,200

505

-------

176,263

5,875

+22.7

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

9,669 

1.35 

1.56

16,48C 

2.3C 2.5-

Calendar year 1955: 

Water year 1955-56:

) 4,403 

) 0.615 

0.71

9,880 

1.38 

1.59

4,751 

0.663 

0.72

5,580 

0.779 

0.90

40,060 

5.59 

6.24

34,700 

4.84 

5.59

Observed

Max 79,600 Min 138 Mean 12,420 

Max 79,200 Min 138 Mean 12,26O

11,830 

1.65 

1.84

5,669 

0.791 

0.91

2,181 

0.304 

0.35

5,898 

0.824 

0.92

Adjusted

Mean 12,460 Cfsm 1.74 In. 23.62 

Mean 12,570 Cfsm 1.75 In, 23.89

t Change in contents, equivalent in cubic feet per second, in First Connecticut and Second Connecticut Lakes, Lake Francis, Comerford Station Pond and Moore Reservoir (dead storage octobe" to March, 

live storage thereafter), Union Village Reservoir, 4 reservoirs in Mascoma River basin, Su~iapee Lake, 

and Surry Mountain, Birch Hill, and Tully Reservoirs.

* Expressed in thousands.
194 CONNECTICUT RIVER BASIN

Deerfield River at Charlemont, Mass.

Location. Lat 42°37'33", long 72°51'20", on left bank 1 mile downstream from Charlemont, 

Franklin County, and 2.5 miles downstream from Chiokley River.

Drainage area.--363 sq mi.

Records available.--June 1913 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 517.36 ft above mean sea level, datum of 

1929.

Average discharge.--43 years, 905 cfs (adjusted for storage).

Extremes.--Maximum discharge during year, 18,100 cfs Oct. 15 (gage height, 11.19 ft); minimum daily, 40 cfs Aug. 5. .

1913-56: Maximum discharge, 56,300 cfs Sept. 21. 1938 (gage height, 20.17 ft, from 

floodtnarks) , from rating curve extended above 31,000 cfs on basis of slope-area and 

contracted-opening determinations at gage heights 17.75 and 20.17 ft; minimum daily, 

5 cfs June 17, 1921.

Remarks.--Records good. Flow regulated by Somerset Reservoir, since 1924 by Harriman 

Reservoir (see p. 230), and by several powerplants above station.

Revisions (water years ).--WSP 781: 1915(M). WSP 1301: 191S(M).

Rating table 1955-56, except periods of ice effe

In feet, and discharge

1.

1.

2.

in cubic feet per second)

2.5 

3.0

100

235

500

910

4.0

6.0

8.0

10.0

1,980

5,210

9,380

14,600

In cubi: feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7 

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Jotal

Mean

(t)

Oct.

232

181

753

854

858

1,500

2,610 

1,440

564

1,030

1,110

1,070

1,070

1,440

15,600

10,400

*12,000

7,570

4,750

3,390

2,430

1,800

681

836

1,400

1,270

1,240

1,190

1,140

1,090

6,270

85,749

2,766

+613

Hov.

3,960

2,760

1,920

2,760

5,500

3,500

2,550 

2,200

1,750

1,950

2,550

2,500

2,100

2,800

3,100

2,700

3,000

2,400

1,750

1,600

1,500

1,100

1,050

1,100

1,100

1,000

1,050

1,050

980

*1,000~

63,680

2,123

-262

982

973

319

696

1,250

1,200

1,160 

1,140

1,110

1,130

1,110

1,090

1,110

1,090

1,100

1,080

1,070

1,070

1,080

1,060

1,050

1,040

1,040

1,060

1,100

1,060

1,040

1,040

1,050

1,010

1,040

32,330

1,043

-719

Tjn

820

900

746

901

904

904

*691 

150

i,oTo

1,740

1,610

1,540

1,360

1,050

564

755

1,160

1,100

1,080

1,100

1,080

1,010

1,020

1,070

1,090

1,060

1,060

1,060

1,060

1,050

1,050

31,693

1,022

-177

Feb.

1,050

1.060/

928

408

170

652

858 

808

874

*827

444

334

854

718

716

750

704

638

438

645

902

830

1,030

1,040

664

613

1,020

980

748

_______

21,703

748

-401

Mar.

776

1,070

1,000

350

656

1,070

1.470

1,326

1,180

1,160

499-

654

1,140

*1,150

1,120

1,060

1,070

435

830

772

930

1,080

1,100

608

275

575

1,080

1,100

678

720

196

27,084

874

-450

Apr.

164

438

687

814

1,330

1,910

2,020 

1,880

1,160

1,190

1,470

1,790

1,920

1,890

1,740

5,450

4,520

2,800

2,580

*1,960

1,750

1,750

1,320

1,240

1,160

1,230

1,310

3,060

4,680

6.450

59,263

1,975

+1,302

May

5.660

3,100

5,250

2,920

5,370

5,050

2,410 

2,200

2,450

2,680

2,780

2,650

1,890

2,300

1,890

1,940

1,620

1,510

680

252

577

1,150

1,150

*864

498

218

755

710

795

443

972

54,407

1,755

+722

June

1,500

1,160

2,000

2,660

2,130

1,450

1,170 

1,050

966

382

557

672

676

751

523

465

126

526

699

390

558

504

124

132

552

438

410

110

*130

124

22,935

764

-96.5

July

106

96

114

90

112

142

126 

101

138

148

78

89

82

740

414

486

470

580

530

525

298

100

244

544

539

530

482

90

61

333

8,514

275

-36.7

Aug.

468

390

420

188

40

160

*474

508

575

599

220

64

202

74

91

480

430

117

73

586

436

566

516

522

68

43

200

246

270

278

378

8,882

287

-233

Sept.

95

87

126

283

506

734

566 

94

466" 45

614

840

951

*975

215

310

735

1.040

794

876

500

80

74

770

884

886

982

982

837

150

16,493

550

-247

Adjusted for change in reservoir contents

Mean

CfSItl

3,379 

9.33 

10.76

1,861 

5.14 

5.7!

Calendar year 1955: 

Water year 1955-56:

324

0.895 

1.03

845 

2.33 

2.59

347 

0.959 

1.03

423

1.17 

1.35

3,277 

9.05 

10.10

2,477

6.84 

7.89

Observed

Max 13,600 Min 47 Mean 1,215 

Max 13,600 Mln 40 Mean 1,182

668 

1.85 

2.06

238 

0.657 

0.76

53.4 

0.148 

0.17

303 

0.837 

0.93

Adjusted

Mean 1,148 Cfsm 3.17 In. 43.04 

Mean 1,184 Cfsrii 3.27 In. 44.50

* Discharge measurement made on this day.

t Change In contents, equivalent in cubic feet per second, in Somerset and Hirriman Reservoirs.

Note.--Ho gage-height record Oct. 15, 16, Nov. 5-29, Aug. 5, 6; discharge estimated on basis of 

weather records, recorded range in stage, powerplant records, and records for station near West 

Deerfield. Stage-discharge relation affected by ice Dec. 20-24, 26-28, Dec. 31 to Jan. 2, Jan. 8, 

19, 24, Feb. 1, 5, 22-24, Mar. 18, 19, 25, 26.
CONNECTICUT RIVER BASIN 195

North River at Shattuckville, Mass.

Location.--Lat 42°38'18", long 72°43'32", on right bank in Shattuckville, Franklin County, 

l£ miles south of Griswoldville and 1.3 miles upstream from mouth.

Drainage area. 88.4 sq mi.

Records available. October 1939 to September 1956. October, November 1939 monthly discharge only, published in WSP 1301.

Gage. Water-stage recorder. Datum of gage is 458.36 ft above mean sea level, datum of 

1989.

Average discharge. 17 years, 184 cfs.

Extremes.--Maximum discharge during year, 1.3,200 cfs Oct. 15 (gage height, 10.37 f':), from 

rating curve extended above 5,700 cfs by logarithmic plotting; minimum, 9.2 cfs Aug. 26; 

minimum daily, 10 cfs Aug. 26, 27, 29, 30.

1939-56: Maximum discharge, that of Oct. 15, 1955; minimum daily, 5.1 cfs O^t. 3,

1948.

Remarks. Records good except those for periods of ice effect, which are fair. Diurnal 

fluctuation at low flow caused by mill above station; prior to 1950, greater reflation 

by mill.

Revisions (water years). WSP 1111: 1945(M).

Rating tables, water year 1955-56, except periods of ice effect (gage

height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Oct. 15-21, 31)

Nov. 1 to Sept. 30

1.9 

2.1 

2.5 

3.0 

3.5

56

117

230

393

4.0 

5.0 

6.0 

8.0 

10.0

635

1,310

2,390

5,780

11,200

2.1 

2.5

17

31

50

103

3.0 

3.5 

4.0 

5.0 

6.0

207

385

660

1,530

2,740

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11'

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.-

Oct.

62 

51

44

41

38.

234

689

287

189

134

106

91

80

239

8.740

2,870

*3,400

*1,260

1,100

739

536

409

337

310

343

284

268

230

208

403

2,060

25,782

832

9.41

10.85

Nov.

660

440

358

1,120

2,000

972

636

534

415

344

430

475

485

730

507

435

626

376

300

272

246

223

204

243

215

187

166

168

144

138

14,049

468

5.29

5.91

Dec.

125 

*125

133

196

254

170

129

125

120

110

100

95

81

82

92

85

80

77

72

60

42

40

40

50

62

62

54

43

38

W

38

2,800

90.3

1.02

1.18

Jan.

33

28

27

36

40

42

42

40

530

700

530

582

435

226

170

144

117

103

95

93

81

75

72

66

60

56

55

53

51

53

54

4,689

151

1.71

1.97

Feb.

50 

50

47

45

50

47

57

62

61

60

58

*68

68

63

62

62

57

57

61

59

58

61

61

57

64

125

155

115

90

1,895

65.3

0.739

0.80

Mar.

77 

73

81

98

89

76

207

177

125

100

'91

106

98

*93

84

68

81

90

85

80

75

80

80

76

82

86

77

76

74

79

76

2,843

91.7

1.04

1.20

Apr.

79 

89

120

177

503

746

674

440

312

390

554

709

745

772

751

1,730

1,840

1,160

902

*738

745

1,040

775

570

558

612

665

1,570

2,050

2.160

24,276

809

9.15

10.21

May

HllS CJ.3

962

790

660

540

470

385

312

358

312

300

293

262

229

207

184

168

161

146

133

124

120

*113

101

18~5 97

254

157

159

166

10,241

330

3.73

4.31

June

133

118

953

WT

237

182

151

124

106

112

153

108

89

74

63

58

54

48

44

39

39

42

40

38

37

33

3T

49

*40

36

3,631

121

1.37

1.53

July

32

31

31

29

29

57

59

41

42

39

32

30

32

~ss 184

47

38

31

27

23

25

42

37

39

36

31

26

23

21

19

18

1,234

39.8

0.450

0.52

Aug.

16 

15

15

14

14

16

16

15

14

13

12

12

12

13

12

12

11

11

11

11

12

12

13

12

11

10 r<? 11

10

10

13

389

12.5

0.141

0.16

Sept.

14 

44

56

80

65

60

59

57

54

52

51

52

26

*22

23

87

94

79

40

43

50

33

29

193

87

50

37

33

29

26

1,625

54.2

0.613

0.68

Calendar year 1955: Max 8,740 Mln 9.4 Mean 255 Cfsm 2.88 In. 39.14

Water year 1955-56: Max 8,740 Mln 10 Mean 255 Cfsm 2.88 In. 39.32

Peak discharge (base, 1,880 cfs). --Oct. 15 (11:30 a.m.) 13,200 cfs

5,850 cfs (7.78 ft): Oct. 31 (4:30 a.m.) 3,700 cfs (6.62 ft); Nov. 5

Apr. 16 (10:30 p.m.) 2,540 cfs (5.86 ft); Apr. 29 (l a.m.) 3,540 cfs

10.37 ft); Oct. 17 (1 p.m.)

3 a.m.) 2,730 cfs (5.99 ft);

6.52 ft).

* Discharge measurement made on this day. 

Note.--Stage-discharge relation affected by ice Dec. 8-14, Dec. 16 to Jan. 11, Jan. 19, Jan. 21 to 

FebT~T, Feb. 16, 17, Feb. 20 to Mar. 2, Mar, 5, 9-11, 15-29.
196 CONNECTICUT RIVER BASIN

Deerfield River near West Deerfield, Mass.

Location.--Lat 42°32'09", long 72°39'14", on right bank 0.4 mile downstream from South 

River, 1-jj miles west of West Deerfield, Franklin County, and Z\ miles west of Deerfield.

Drainage area. 558 sq mi.

Records qvailable . March 1904 to December 1905 (gage heights only), October 1940 to September 1956. Published as "at Deerfield" 1904-5.

Gage.-'Water-stage recorder. Altitude of gage is 155 ft (from topographic map). Prior to 

D~ec. 16, 1905, chain gage at site 1.5 miles downstream at different datum.

Average discharge. 16 years (1940-56), 1,327 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 43,700 cfs Oct. 15 (gage height, 14.56 ft); minimum daily, 56 cfs Aug. 26.

1940-56: Maximum discharge, 48,500 cfs Dec. 31, 1948 (gage height, 15.43 ft); minimum daily, 46 cfs Aug. 3, 1947, Oct. 4, 1953.

Remarks. Records excellent except those for periods of ice effect, which are good. Plow 

regulated by Somerset and Harriman Reservoirs (see p. 230), and by several powerplants 

above station.

Rating table, water year 1955-56, except periods of Ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

1.5

1.6 

1.8 

2.1 

2.5 

5.0

56

84

155

310

605

1,130

4.0 

5.0 

6.0

2,670

4,690

7,370

14,200

31,100

Discharge, In cubic feet per second, water year October 1955 to Se->tember 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14 

15

16

17

1^

19

20

21

22

23

24 

25

26

27 

28

29

30

31

Total

Mean

(t)

Oct.

324

210

690

948

1,010

1,850

4,200

2,260

1,140

1,020

1,140

1,410

1,200

1,880 

50,000

16,000

20,200

*11,300

7,340

5,020

3,690

2,870

1,820

1,450 

2,510

1,940

1,870 

1,710

1,840

1, 960

11,000

143,582

4,652

+613

Nov. Dec.

5,780 1.280

3,850

2,980

4,920

10.100

5,650

3,830

3,510

2,990

3,070

3,690

3,730

3,470

4,420 

4,340

3,790

4,520

3,510

2,700

2,480

2,150

1,680

1,670

1,780 

1,440

1,410

1,460 

1,390

*1,420

1.540

99,070

3,302

-262

1,290

782

1,160

2.000

1,580

1,510

1,420

1,470

1,460

1,410

1,240

1,470

1,280 

1,390

1,180

1,310

1,390

1,270

1,210

1,050

1,150

1,150

1,350 

1,350

1,300

1,250 

1,150

1,150

1,250

1,150

40,402

1,303

-719

Jan.

980

940

880

I,o4o

1,040

1,040

1,000

400

2,000

5.060

2,690

2,680

2,530

1,620 

1,080

649

1,360

1,310

1,380

1,370

1,280

1,220

1,160

1,280 

1,310

1,310

1,190 

1,240

1,120

1,240

1,130

42,529

1,372

-177

Feb.

1,180

1,150

1,170

514

573

596

1,030

1,040

944

948

*721

464

1,040

730 

1,060

909

811

819

630

746

1,030

939

1,200

1,250 

948

1,020

1.550 

1,230

966

-___

26,808

924

-401

Mar.

856

1,320

1,310

694

714

1,340

2.740

1,990

1,650

1,440

970

770

1,440

1,430 

1/400

*1,230

1,270

850

858

1,240

1,070

1,360

1,360

960

 535

624

1,280 

1,320

890

1,050

446

36,407

1,174

-450

Apr.

415

5!§2

910

1,320

2,690

3,590

3,510

2,940

2,160

2,080

2,830

3,350

3,610

3,590 

3,410

6,090

8,300

5,220

*4,390

3,570

3,260

3,850

3,010

2,600 

2,400

2,570

2,450 

5,160

8,490

10.400

- ___

108,747

3,625

+ 1,302

May

5.910

4,620

4,980

4,370

4,640

4,150

3,390

3,030

5,160

5,550

5,530

3,550

2,760

2,850 

2,600

2,440

2,260

1,970

1,400

660

558

1,350

*1,460

1,350 

676

482

1,080

1,150

1,230

76,264

2,460

+722

June

1,850

1,650

5. 810

3,470

2,850

2,070

1,250

1,550

1,540

725

818

950

859

865 

741

611

253

512

756

677

572

564

228

134 

555

*693

518 

244

149

174

31,161

1,039

-96.5

July

188

128

138

162

204

124

298

214

507

362

94

84

95

1.040 

839

445

570

546

597

634

602

182

235

560 

667

766

594 

192

70

342 

11,480

370

-36.7

Aug.

584

514

509

130

73

 380

466

498

620

690

144

104

232

*172 

131

339

439

262

59

448

490

472

367

300 

131

56

196 

228

265 

352

392

10,043

324

-255

Sept.

172

570

295

240

425

766

714

130

154

326

646

870

1,100

990 

*374

516

964

1,040

896

1,030

742

132

154

1.190 

1,070

1,010

1,170 

1,170

840

523

19,797

660

-247

Adjusted for change In reservoir contents

Mean

Cfsm

5,245 

9.40

10.84

3,040 

5.45 

6.08

Calendar- year 1955: 

Water year 1955-56:

584 

1.05 

1.21

1,194 

2.14 

2.47

523 

0.937 

1.01

724 

1.30 

1.50

4,927 

8.63 

9.85

3,182 

5.70 

6.58

Observed

Max 30,000 Min 65 Mean 1,806 

Max 30,00o Mln 56 Mean 1,766

942 334 90.8 

1.69 0.599 0.163 

1.88 0.69 0.19

413

0.740 

0.83

Adjusted

Mean 1,739 Cfsm 3.12 In. 42.31 

Mean 1,767 Cfstt, 3.17 In. 43.13

Discharge measurement made on this day, 

t Change In contents, equivalent In cubic feet per second, In Somerset and Hirriman Reser\ 

Note. Stage-discharge relation affected by ice Dec. 20 to Jan. 9, Feb. 23, 24, Mar. 18.
CONNECTICUT RIVER BASIN 197

Connecticut River at Montague City, Mass.

Location. Lat 42 C 34'48", long 72 C 34'30", on left bank 75 ft downstream from New York, New 

Haven and Hartford Railroad bridge at Montague City, Franklin County, and l.OCO ft downstream from Deerfield River.

Drainage ar*ea.~7.865 sq mi.

Records available.--March 1904 to September 1956. Prior to October 1929, published as "at 

Sunderland."Records published for both sites October 1929 to September 1932.

Gage.--Water-stage recorder. Datum of gage is 99.87 ft above mean sea level, datum of 

T929. Prior to Oct. 1, 1917, chain gage; Oct. 1, 1917, to Oct. 8, 1921, water-stage 

recorder used for low stages, chain gage otherwise; and Oct. 9, 1921, to Sept. 30, 1929, 

water-stage recorder, at site 9 miles downstream at datum 1.00 ft lower. Gages at both 

sites in operation Oct. 1, 1929, to Sept. 30, 1932.

Average discharge. 52 years, 13,820 cfs (adjusted for storage since October 1923).

Extremes. Maximum discharge during year, 99,400 cfs Apr. 30 (gage height, 31.80 ft); minimum daily, 357 cfs Aug. 26.

1904-56: Maximum discharge, 236,000 cfs Mar. 19, 1936 (gage height, 49.2 ft, from 

floodmarks), from rating curve extended above 160,000 cfs; minimum daily, 325 cfs 

July 4, 1949.

Remarks. Records good except those for periods of ice effect or no gage-height record and 

those below 1,500 cfs, which are fair. Flow regulated by powerplant and by First 

Connecticut and Second Connecticut Lakes, Lake Francis, Moore Reservoir and Comerford 

Station Pond (see p. 230), and other reservoirs (combined usable capacity, about 

32i billion cubic feet).

Revisions (water years). WSP 471: 1904-13 calendar years, 1914-17. WSP 741: 1930-32. 

WSP 781:1928(M).WSP 891: Drainage area. WSP 1051: 1905, 1909-10, 1912-14, 1920, 

1922-23. 1925-26, 1928, drainage area at Sunderland. WSP 1301: 1905(M) , 1914-19(M) , 

1930-31(M).

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

(t)

Oct.

1,880

982

4,610

5,050

5,000

6,470

U,100

7,180

6,580

7,380

6,930

5,790

6,630

9,620

42,200

43,700

45.200

42,400

26,500

*22,800

20,000

14,100

7,800

11,100

13,400

12 , 200

12,600

13,500

9,740

8 , 260 

35,800

469,502

15,150

+390

Nov.

29,900

24,000

20,200

20,600

41.700

38,900

30,400

26,500

22,300

20,100

21,100

22,500

20,500

20,700

23,000

23,400

24,600

21,800

20,200

17,200

14,000

13,900

14,200

11,000

11,200

13,600

7,460

10,300

10 , 600

9,430

605,310

20,180

+795

Dec.

9,220

8,670

*6,280

6,090

11,300

11,500

10,600

8,520

7,310

4,050

3,690

7,640

7,150

7,120

7,540

7,280

5,200

3,780

7,400

7,600

6,000

4,500

4,000

3,500

3,000

2,900

6,400

6,100

6,100

5,500 

3,500

199,440

6,434

-1,233

Jan.

1,700

2,500

5,400

4,700

4,500

5,000

3,500

2,000

9,500

20,000

27,000

30,000

50,500

27,900

20,300

14,600

15,700

13,400

11,300

11,100

7,670

5,880

10,100

9,930

10,100

7,600

7,400

5,600

4,700

7,600 

7,200

344,380

11,110

+669

Feb.

7,400

7,500

7,600

5,300

2, 600

7,400

8,200

8,000

7,800

8,000

*6,000

4,500

7,330

7,000

7,550

7,510

7,860

5,460

3,000

8,040

7,600

5,200

7,600

7,000

6,000

6,200

8,640

9,720

9,300

201,310

6,942

-1,401

Mar.

8,920

8,980

8,940

4,500

9,910

9,860

13,600

10,900

9,460

8,340

6,630

8,140

8,920

8,980

9,890

9,950

5,720

5.600

8,200

7,300

 7,800

8,470

8,310

8,000

5,590

7,770

8,680

7,020

7,730

7,150 

6,440

253,700

8,184

-1,606

Apr.

3,000

8,040

7,840

10 , 500

17,700

34,400

43,600

42,700

33,100

29,600

30,200

35,500

42,100

42,300

42,000

46,700

72,700

79,400

*70,300

57,800

50,400

46,000

41,800

38 , 900

37,100

36,100

35,800

37,900

70,600

92,400

1,234,280

41,140

+5,041

May

92 . 900

75,800

67,100

65,400

63,400

58,500

53,000

47,500

42,600

38,500

38,600

37,300

35,900

35,500

36,800

37,500

35,300

30,800

27,000

21,200

18,900

15,800

15,400

14,500

*14,300

14,500

14,400

26,000

38,800

35,400 

25,000

*1,171.6

37,790

+1,972

June

20,900

21,900

31,800

42,500

34,400

23,700

20,500

19,900

18,600

16,000

11,100

12,400

14,800

12,800

10,700

8,320

5,280

5,910

7,420

7,640

5,970

5,690

1,040

796

5,380

7,010

6,730

6,540

7,740

2,180

395,646

15,190

+206

July

770

6,830

3,320

a434

5,370

7,330

2,390

1,510

7,360

10,200

10,700

10,400

7,430

11,500

15,500

13,300

8,530

8,310

8,910

7,740

5,660

3,010

4,770

5,420

5,720

6,600

7,220

4,710

a563

5,420 

4,500

201,427

6,498

-197

Aug.

4,310

4,030

3,710

968

672

2,960

3,810

3,760

3,34,0

4,750

1,490

a439

3,4-30

2,370

3,3SO

2,800

4,190

828

*3S9

3,450

5,8<W

5,510

3,500

5,620

555

 ' a357

2,970

3,000

3,270

3,460 

6.710

89,718

2,834

-596

Sept.

7,510

4,030

4,680

7,990

8,290

6,900

6,760

3,350

926

4,820

2,540

5,700

6,540

5,350

*855

922

8,120

8,690

9,480

a, 220

8,400

8,480

12,600

10,100

16,600

15,800

11,500

8,950

2,700

1,070

208,053

6,954

-224

Adjusted for change in reservoir contents

Mean 

Cf sm 

In.

15,540 

1.98 

2.28

20.97C 2.6" 

2.9"

Calendar year 1955: 

Water year 1955-56:

5,200 

0.661 

0.76

11,780 

1.50 

1.73

5,541 

0.705 

0.76

6,578 

0.836 

0.96

46,180 

5.87 

6.55

39,770 

5.06 

5.83

Observed

Max 79,200 Min 593 Mean 14,820 

Max 92,900 Min 357 Mean 14,680

13,390 

1.70 

1.90

6,301 

0.801 

0.92

2,308 

0.293 

0.34

6,710 

0.853 

0.95

Adjusted

Mean 14,790 

Mean 15,000

Cf sm 1 

Cfsrr 1

.88 In. 25.53 

!91 In. 25.95

Peak discharge (base, 61,000 cfs). Oct. 15 (9:30 p.m.) 65,100 cfs (24.84 ft); Apr. 18 (1 a.m.) 

81,500 cfs (28.30 ft); Apr. 30 (9 to 11 p.m.) 99,400 cfs (31.80 ft).

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in all reservoirs from First Connecticut and Second Connecticut Lakes to 2 reservoirs in Deerfield River basin listed on page , and, 

dead storage October to March, live storage thereafter in Moore Reservoir.

* Expressed in thousands.

a No gage-height record; discharge estimated on basis of weather records, shape of normal recession graph, and records for Connecticut River at Turners Falls and Deerfield River near West 

Deerfield.

Note.--Stage-discharge relation affected by ice Dec. 19 to Jan. 12, Jan. 26 to Feb. 12, Feb. 19, 

21-26, Mar. 18-20.
198 CONNECTICUT RIVER BASIN

Mill River at Northampton, Mass.

Location. Lat 42"19'05", long 72°39'2l", on right bank at Northampton, Hampshire County, 

3£ miles upstream from mouth.

Drainage area. 52.8 sq mi.

Records available. October 1938 to September 1956, October 1938 montHy discharge only, 

published in WSP 1301.

Gage. Water-stage recorder and concrete control. Altitude of gage is 140 ft (from topographic map).

Average discharge. 18 years, 99.8 cfs.

Extremes. Maximum discharge during year, 5,010 cfs Oct. 15 (gage helfht, 9.81 ft), from 

rating curve extended abov^ 3,700 cfs on basis of computation of flow over dam at gage 

height 11.78 ft; minimum, 5.0 cfs Aug. 4; minimum daily, 6.7 cfs Aug. 29.

1938-56: Maximum discharge, 6,300 cfs Aug. 19, 1955 (gage heigtt, 11.78 ft), from 

rating curve extended above 3,700 cfs as explained above; minimum, 2.2 cfs Oct. 1, 1950; 

minimum daily, 5.5 cfs Sept. 27-30, 1941, Sept. 10, 1944.

Remarks. Records excellent except those for periods of ice effect, wt ich are fair. Flow 

regulated by mill above station.

Revisions (water years). WSF 921: 1940. WSP 1231: 1940-42(M) , 1944-45(M) , 1948(M),

1949.

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.9 

2.2 

2.5 

3.0

Oct. 1-31

3.5 

4.0 

7.0

34

74

136

290

50O

765

3,020

1.4

1.5

1.6 

1.8 

2.1

Nov. 1 to Sept. 30

2.5 

3.0 

3.5 

4.0

138

290

500

765

63 6.0 2,220 

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cf sm

In.

Oct.

63

49

43

36

54

182

393

221

146

96

76

66

60

106

*2,930

1,880 

1,740

717

758

455

328

265

231

228

254

202

179

146

139

374

1,730

14,127

456

8.64

9.95

Nov.

*432

301

258

734

.1*7-22

544

372

332

272

244

399

360

305

534

344

320 

352

251

224

212

200

183

156

163

150

138

129

127

115

105

10,026

334

6.33

7.06

Dec.

100

98

104

204

212

146

11C

*104

98

92

83

78

69

66

78

68 

64

63

60

38

35

35

35

41

56

47

39

34

32

35

11

2,355

76.0

1.44

1.66

Jan.

29

28

31

34

36

37

*38

36

120

170

158

'24~4" 249

143

104

92 

85

69

62

69

60

57

55

52

47

43

45

43

41

52 

52

2,381

76.8

1.45

1.68

Feb.

45

42

43

37

47

41

54

56

56

56

56

105

90

70

*65

68 

65

63

68

62

49

47

55

49

68

120

no

100

82

1,865

64.3

1.22

1.31

Mar.

80

89

125

140

120

91

'210 3SO

135

110

105

116

112

112

100

82 

95

105

82

*87

85

82

105

95

87

85

82

82

84

84 

83

3,410

110

2.08

2.40

Apr.

98

120

153

198

436

497

418

254

228

303

393

432

428

442

417

883 

716

491

410

352

*344

381

393

336

305

313

298

444

679

*755

11,917

397

7.52

8.39

May

385

301

344

276

241

218

206

163

150

160

146

134

127

118

112

106 

100

98

100

92

83

78

76

*75

68

64

92

98

72

100

167

4,550

147

2.78

3.20

June

154

104

707

244

160

120

104

89

78

89

104

82

69

55

45

42 

43

38

34

33

30

32

29

28

26

*23

26

30

24

2_2_

2,604

88.8

1.68

1.88

July

21

20

18

16

22

60

49

34

37

34

25

21

27

"5? 100

34 

29

22

20

18

19

38

36

26

3O

26

21

19

16

14 

12

91G

29.5

0.559

0.65

Aug.

11

To

8.2

6.8

8.3

8.6

8.6

8.6

*8.3

8.3

8.0

 7.4

8.6

9.4

9.0

8.3 

8.0

8.0

8.3

7.4

7.7

8.0

8.0

8.0

7.4

7.2

7.2

7.0

6.7

7TO

9.7

253.0

8.16

0.155

0.18

Sept.

12

23

46

22

14

20

16

11

9.4

8.6

8.6

8.6

9.0

9.0

9.4

22 

49

37

24

20

22

18

17

92

55

39

34

33

35

32

758.6

25.3

0.479

0.53

Calendar year 1955 : Max 3,870 Hin 6.8 Mean 160 Cfsm 3.03 In. 41.21

Water year 1955-56 : Max 2,930 Hin 6.7 Mean 151 Cfsm 2.86 In. 38.89

Peak discharge (base. 1.250 cfs).--Oct 15 (10:30 a.m.) 5,010 cfs (9.81 ft); Oct. 17 (2 p.m.' 

3,020 cfs (7.00 ft); Oct. 31 (4:30 to 5 a.m.) 3,660 cfs (7.88 ft)j Nov. 5 (5 a.m.) 3,210 cfs (7.24 

ft); June 3 (6:30 a.m.) 1,72O cfs (5.37 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 29 to Dec. 1, Dec. 11-14, Dec. 16 to Jan. 10, 

Jan. 18 to Mar. 4, Mar. 8-11, 16-30.
CONNECTICUT RIVER BASIN 

Ware River near Barre, Mass.

199

Location. Lat 42°25'05", long 72°01'30", on left bank 1,100 ft downstream from bridge at 

Barre Palls, 1.6 miles upstream from Burnshirt River, and 4 miles east of Barre, 

Worcester County.

Drainage area.--55.0 sq mi.-

Records available.--July 1946 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 745 ft (from topographic map).

Average discharge. 10 years, 98.5 cfs.

Extremes.--Maximum discharge during year, 1,890 cfs Oct. 16 (gage height, 6.31 ft), from

rating curve extended above 960 cfs by logarithmic plotting; minimum, 3.6 cfs Aug. 29.

1946-56: Maximum discharge, that of Oct. 16, 1955; minimum, 1.1 cfs Sept. 6, 1953.

Remarks.--Records excellent except those for periods of -ice effect, which are good. Some 

regulation by Long Pond and other small reservoirs.

Rating tables, water year 1955-56, except periods of ice effect (gage

height, in feet, and discharge, in cubic feet per second)

'Backwater from silt July 17-19, £4-28, Sept. 8)

2.5 

2.7 

3.1 

3.5 

4.0

145

286

4.; 485

5.0 755

5.5 1,100

6.0 1,560

1.93

2.0

2,2

2.4

2.7

3.1

Jan. 10 to Sept. 30

i 3.5 

) 4.0 

J 4.5 

5.0 

5.5

153

301

490

755

1,100

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 -

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Toba:

Mean

Ofsm

In.

Oct.

45

47

38

32

*2J3

34

96

120

120

104

85

65

53

53

242

1,520

1,460

1,040

656

452

548

283

245

210

198

190

173

156

141

135

185

8,538

275

5.00

5.77

Nov.

242

233

201

195

396

"406 525

320

267

230

242

286

286

289

313

286

270

245

215

195

179

*161

147

143

139

131

118

118

105

105

6,988

233

4.24

4.73

Dec.

102

96

94

105

129

127

104

104

92

85

79

74

69

67

66

66

64

58

56

50

46

40

35

36

43

48

45

39

34

34

3^5

2,120

68.4

1.24

1.43

Jan.

31

26

2T

30

33

35

35

36

315

540

602

463

394

332

288

242

192

168

170

140

125

112

110

94

92

86

83

77

75

75 

80

5,108

165

3.00

3.45

Feb.

75

72

76

77

75

71

81

95

96

90

85

88

93

92

93

98

95

88

89

90

82

76

78

80

80

110

109

*99

92

2,525

87.1

1.58

1.71

Mar.

89

89

93

123

142

127

:s3

192

165

145

133

135

131

125

125

123

96

140

135

110

109

107

110

102

101

106

98

96

95

96

3,684

119

2.16

2.49

Apr.

93

104

120

140

212

291

342

262

281

301

278

291

315

338

384

464

779

755

618

499

454

429

421

391

346

328

311

308

487

C68

11,010

367

6.67

7.44

May

570

437

363

315

281

£58

*£33

209

186

178

176

166

158

144

133

123

116

104

95

69

81

74

72

77

72

68

77

96

86

92

5,207

168

3.05

3.52

June

149

156

168

203

IBT

149

118

96

85

78

77

70

63

56

48

44

43

38

33

29

28

28

26

25

37

37

32

34

29

25

2,190

73.0

1.33

1.48

July

22

19

16

14

16

29

30

26

29

30

25

19

17

27

44

38

30

23

18

15

14

15

15

14

18

*19

15

13

11

9.2

8_.jt

638.6

20.6

0.375

D.43

Aug.

7.6

6.7

6.3

5.7

5.5

5.3

5.3

4.9

4.4

5.4

11

8.7

7.3

7.6

6.7

5.9

5.1

4.7

4.9

4.6

5.3

8.1

7.0

6.1

5.5

4.7

4.1

3.8

4.0

b .6

*7 . 8

183.6

6.02

0.109

0.13

Sept.

7.8

7.6

7^8

7.3

6.5

6.4

17

18

13

9.5

8.1

7.0

7.0

6.7

6.5

8.8

16

24

27

20

20

16

14

30

3_7

28

21

27

32

25

482 .X)

16.1

1 0.293

0.33

Calendar year 1955: Max 1,520 MLn 3.6 Mean 136 Cfsm 2.11 In. 28.56

Water year 1955-56: Max 1,520 Min 3.8 Mean 133 Cfsm 2.42 In. 32.91
200 CONNECTICUT RIVER BASIN

Ware River at Coldbrook, Mass.

Location. Lat 42°23'30", long 72°03'40", on right bank above diversion dam at Ware River 

intake works at Coldbrook, Worcester County, 2 miles east of South Barre and 2.7 miles 

downstream from Burnshirt River.

Drainage area. 96.8 sq mi.

Records available. January 1928 to September 1956.

Gage. Venturi meters and water-stage recorder. Datum of gage is 5.65 ft below mean sea 

level, datum of 1929. Prior to Feb. 1, 1936, water-stage recorder at site 0.2 mile 

downstream at datum 631.91 ft above mean sea level, unadjusted.

Average discharge. 28 years, 169 cfs.

Extremes. Maximum daily discharge during year, 2,070 cfs Oct. 17; minimum daily, 10 cfs 

Aug. 28.

1928-56: Maximum discnarge, 14,000 cfs Sept. 21, 1938 (gage height, 664.28 ft), by 

computation of flow over aam; minimum daily, 4,7 cfs Sept. 6, 1953.

^emartcs. Records gjod. Figures of discharge include diversion as needed for Boston metropolitan district during period Oct. 15 to June 14 of each year; diversion began in 

March 1931.

Cooperation. Computations of daily discharge made in cooperation with Water Division,

Metropolitan District Commission, which collected gage-height and venturi-meter records.

Revisions (water years). WSF 781: Drainage area. WSP 1031: 1944.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

S

9

_C

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Cfsm

In.

Oct.

107

97

80

67

5_9_

84

248

274

261

?iq

216

154

113

92

694

1,900

2,o;o

1,650

1,180

846

635

502

399

346

348

326

291

265

245

254

384

14,407

435

4,'LO

b.54

Nov.

419

388

325

503

1.050

1,040

794

599

431

406

5'V

53 '

540

577

597

532

499 

440

384

342

311

?&3

255

244

239

216

206

231

197

204

ir,34i

445

4.60

5.13

Dec.

186

179

185

221

252

248

176

177

150

148

114

lij.

116

102

108

107

103 

100

56

25

77

67

58

60

71

75

70

59

53

53

51

i,568

115

1.19

1.37

Jan.

47

41

41

45

50

51

52

61

584

1,180

1,080

854

690

573

472

377

269 

220

220

194

176

167

151

137

135

125

120

110

102

111

113

8,548

276

2.85

3.28

Feb.

105

107

109

99

106

108

136

147

150

143

138

13G

145

138

144

148

137 

137

138

138

120

127

b!26

t>141

b!38

b!94 T§4"

185

b!56

3,982

137

1.42

1.53

Mar.

b!36

b!35

155

224

244

217

321

353

287

248

228

240

23G

219

207

155

158 

220

203

193

183

179

188

171

181

182

159

154

153

155

150

6,234

201

2.08

2.40

Apr.

154

177

215

299

500

698

766

470

614

589

556

616

718

807

900

1,300

1.720 

1,530

1,250

1,040

971

918

907

827

735

690

632

684

1,280

1,460

24,023

801

8.27

9.23

May

1,190

926

759

626

549

496

454

403

360

354

346

322

292

247

223

208

191 

175

155

149

137

118

120

130

125

112

TK

163

140

130

208

9,952

321

3.32

3.82

June

295

293

373

381

3T5

238

187

152

138

130

125

111

96

84

73

65

S4 

54

50

50

50

50

47

56

74

56

51

69

98

62

3,887

130

1.34

1.49

Calendar year 1955: Max 2,070 Min 9.9 Mean 211 Cfsm 2.18

July

33

43

41

37

41

62

65

59

63

67

56

46

43

78

94

88

76 

60

48

40

39

40

40

39

45

47

41

35

31

26i§_

1,539

49.6

0.512

0.59

Aug.

18

20

19

18

16

16

16

16

15

18

27

23

21

20

19

17

15 

13

13

13

14

17

17

16

15

13

11

10

TT

17

19

513

16.5

0.170

0.20

Sept.

20

23

26

26

22

22

50

47

37

26

23

19

19

18

IS

24

39 

49

50

46

44

36

34

63

77.

66

52

58

62

51

1,149

38.3

0.396

0.44

In, 29.59

Water year 1955-56= Max 2,070 Min 10 Mean 249 Cfsm 2.57 In. 35.02

b Stage -discharge relation affected by ice.
CONNECTICUT RIVER BASIN 201

Ware River at Gibbs Crossing, Mass.

Location.--Lat 42°14'07", long 72 C 16'45", on right bank half a mile upstream from Gibbs 

Crossing, Hampshire County, 1.8 miles upstream from Beaver Brook, and 2j miles southwest of Ware.

Drainage area. 199 sq mi.

Reeords available. August 1912 to September 1956.

Gage. Water-stage recorder. Datum of gage is 379.79 ft above mean sea level, datum of 

1929. Prior to Mar. 1, 1930, at site half a mile downstream at different datum.

Average discharge. 44 years, 326 cfs (adjusted for diversion).

Extremes. Maximum discharge during year, 2,580 cfs Apr. 17 (gage height, 5.55 ft); minimum, 14 cfs Aug. 7, 8, 12, 16; minimum daily, 14 cfs Aug. 12.

1912-56: Maximum discharge, 22,700 cfs Sept. 21, 1938 (gage height, 18.2 ft, from 

floodmarksj, from rating curve extended above 4,600 cfs on basis of contracted-opening 

determination at gage height 12.83 ft and slope-area determination at gage height 

18.2 ft; minimum, 5.0 cfs Oct. 26, 1914; minimum daily, 6.0 cfs Oct. 4, Ifl4.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair. Flow regulated by mills above station. Diversion at times since March 

1931 from 97 sq mi in Ware River basin for supply of Boston metropolitan district.

Revisions (water years).--WSP 661: Drainage area. WSP 1031: 1944. WSP 1301: 1914(M).

Rating tables, water year 1955-56, except periods of ice effect (gage

height, in feet, and discharge, in cubic feet per second)

(Backwater from-aquatic vegetation Aug. 6 to Sept. 6)

Oct. 1 to Jan. 9 10 to Sept. 30

2.0

2.1 

2.3 

2.6 

3.0

195

400

3.5 820

4.0 1,290

5.0 2,110

6.0 2,980

2.7

87

175

300

3.0 

3.5

4.0 

5.0 

6.0

465

850

1,290

2,110

2,980

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

16

19

20

*\22*

23

24

25

26

27

28

29

30

31

TXal

Mean

(t)

Oct.

96

216

308

181

155

192

550

*730

739

622

*435

414

*346

194

*650

1,630

g.130

2,050

*1,510

1,510

1,290

1,050

890

802

766

721

667

577

*470 

502

23,263

750

88.8

Nov.

940

850

730

784

1,890

1,930

1,630

1,280

1,030

B70

1,060

1,260

1,180

1,220

1,310

1,160

1,100

960

793

739

694

613

550

502

534

448

421

442

370 

556

27,648

922

0

Dec.

322

*335

242

367

559

502

b478

379

274

225

234

332

211

198

216

b220

141

149

b270

b!25

132

72

133

69

107

bllO

b!75

a50

a!20 

alOO

a50

6,897

222

0

Jan.

a70

a75

a!30

alOO

72

96

48

50

b600

1,510

*1,150

1,030

906

*984

858

786

642

521

397

b400

319

b305

389

b280

268

243

239

206

160

297 

284

13,415

433

49.7

Feb.

261

240

279

b!70

211

300

324

344

346

322

228

293

423

335

332

 373

335

194

234

345

b220

blSO

b200

b!90

b240

b600

550

427

b300

8,796

303

0

Mar.

279

313

310

730

746

558

865

939

b710

543

565

634

565

514

447

388

b225

b345

432

b390

b380

*397

419

372

b360

417

345

333

328

320 

249

14,418

465

0

Apr.

296

414

485

694

1,340

1,810

1,860

1,370

1,080

1,190

1,340

1,430

1,570

1.640

1,750

:,:>?

2,'.37Q

1,900

1,610

1,350

1,510

1,510

1,500

1,480

*1,330

1,220

1,14" i.oeu

1,510

1,960

41,809

1,394

128

May

* ,690

,580

,400

,210

,050

948

906

810

722

706

706

626

618

618

542

507

417

384

338

340

366

*286

256

272

270

162

220

416

342

184

403

19,327

623

3.53

June

557

610

866

922

722

558

441

377

237

235

366

276

187

201

199

112

91

204

121

112

111

107

85

62

177

136

103

132

*147

70

8,524

284

0

July

94

*101

98

94

100

-5

db

l."'i

156

131

133

107

94

69

100

247

140

119

100

90

36

59

162

76

61

69

58

61

26

90

50

3,008

97.0

0

Aug.

43

43

*33

38

16

15

4.

34

34

14

45

41

35

32

*39

40

17

11

42

35

32

42

38

15

43

33

30

41 

22

1,073

34.6

0

Sept.

20

32

38

84

48

^ ;

\f

D ^

lOb

66

58

57

59

48

29

86

150

88

81

94

66

40

161

103

100

143

128

88

40

2,221

74.0

0

Adjusted for diversion

Mean 

Cfsm 

In.

839 

4.22 

4.86

922 

4.63 

5.17

Calendar year 1955: 

Water year 1955-56:

222 

1.12 

1.29

482 

2.42 

2.79

303

1.52 

1.64

465 

2.34 

2.69

1,522 

7.65 

8.53

627 

3.15 

3.63

Observed

Max 8,880 Min 21 Mean 445 

Max 2,370 Min 14 Mean 466

284 97.0 34.6 

1.43 0.487 0.174 

1.59 0.56 0.20

74.0 

0.372 

0.42

Adjusted

Mean 465 Cfsm 2.34 In. 31.70 

Mean 488 Cfsn, 2.45 In. 33.37

Featr discharge (base, 1.300 efs).--0et. 17 (io to 11 p.m.) 2,410 cfs (5.37 ft); Nov. 5 (9:30 to 

11 p.m.) 2,100 cfs (4.99 ft); Nov. 15 (1 to 3 a.m.) 1,360 cfs (4.08 ft); Jan. 10 (2 to 5 p.m.) 1,570 

cfs (4.33 ft); Apr. 7 (2:30 to 3:30 a.m.) 2,020 cfs (4.89 ft); Apr. 17 (1:30 to 3 a.m.) 2,580 cfs 

(5.55 ft); Apr. 30 (7:30 a.m.) 2,090 cfs (4.97 ft).

* Discharge measurement made on this day.

t Diversion, equivalent in cubic feet per second, from 97 sq mi in Ware River basin for supply of 

Boston metropolitan district; furnished by Metropolitan District Commission.

a No gage-height record; discharge estimated on basis of weather records and records for Ware River 

at Coldbrook and East Branch Swift River near Hardwiclc.

b Stage-discharge relation affected by ice.
CONNECTICUT RIVER BASIN

Hop Brook near New Salem, Mass.

Location.--Lat 42°28'4;]", long 72°20'05", on right bank 1.5 miles upstream from mouth and 

lj miles south of New Salem, Franklin County.

Drainage area. 3.39 sq mi.

Records available.--October 1947 to September 1956. October 1947 monthly discharge only, 

published in WSP 1301.

Gage.--Water-stage recorder and concrete control. Altitude of gage is 725 ft (from topographic map).

Average discharge.--9 years, 6.58 cfs.

Extremes. Maximum discharge during year, 193 cfs Oct. 31 (gage height, 2.87 ft), from

rating curve extend-ed above 78 cfs by logarithmic plotting; minimum, C.02 cfs Aug. 28,

29.

1947-56: Maximum discharge, 275 cfs Aug. 19, 1956 (gage height, 3.13 ft), from

rating curve extended above 78 cfs by logarithmic plotting; minimum, C.004 cfs Aug. 3,

9, 10, 1955. 

Remarks.--Records good except those for periods of ice effect or no gage-height record,

which are fair.

Rating table, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.0

0.02

.02

.10

.24

.54

.99

2.35

1.2 

1.4

1.6 

1.8 

2.0 

2.3

4.6

9.0

17.1

29

45

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

5.3

3.0

2.35

2.15

g.OO

15.6

18.9

15.4

8.8

6.1

5.O

4.4

4.1

5.4

15.7

18.6

40

19.1

*17.2

13.4

11.1

3.0

8.5

11.8

14.9

9.7

8.5

7.8

7.2

24

11

412.00

13.3

3.92

4.52

Nov.

25

18.2

15.7

41

45

23

18.8

17.1

14.3

13.0

"6

2£

17.6

28

17.1

17.6

19.3

13.4

12.2

11.4

10.4

9.4

9.0

9. 7

8.5

7.8

7.2

7.5

6.1

6. 1

495.4

16.5

4.87

5.44

Dec.

5.6

*5.4

5.7

10.0

10.4

6.9

5.9

5.2

5.2

4.5

4.4

4.1

3.9

4.0

4.4

3.3

3.4

c.4

2.9

1.10

5.0

2.4

2.1

2.0

2.2

2.4

2.3

2.1

2.0

1.9

1.8

126.40

4.08

1.20

1.33

Jan.

1.7

1.5

1.5

1.6

1.7

1.8

1.85

1.75

16.0

15.3

9.0

13. £

10.6

6.1

5.0

4.5

4.1

3.8

3.8

3. 7

3.4

3.2

3. 1

2.9

2. 7

2.6

2.5

2.4

2.3

2.5

2.7

139.20

4.49

1.32

1.53

Feb.

2.4

2.5

2.5

2.3

2.4

2.5

4.8

6.0

4.1

3.7

3.5

4.4

4.2

3.7

4.8

4.8

3.8

3.5

3.4

3.2

3.0

2.8

2.8

3.0

7.2

12.2

4.C

4.1

3.b

__-__.

115.8

3.99

- 1.18

1.27

Mar.

3.6

3.7

6.1

7.6

5.8

4.6

25

10.1

7.3

6.3

7.4

8.5

7.0

6.8

*5.7

5.6

7.8

6.5

5.4

5.2

5.2

6.1

6.3

5.7

5.4

5.0

5.0

5.0

5.0

4.8

4.E

204.1

6.58

1.94

2.24

Apr.

5.2

6.5

9.2

16.3

31

35

26

17.0

14.3

17.1

23

29

31

35

34

76

59

*43

36

31

29

30

27

26

24

23

22

27

38

49

867.6

28.9

8.53

9.52

May

26

22

21

17.6

16.2

14.3

12.2

11.1

9.7

11.8

9.7

8.8

B.O

7.5

7.0

6.5

5.9

5.9

5.7

5.7

5.0

4.6

7.5

6.4

*5.0

4.5

7.3

6.1

4.6

5.8

14.5

303.9

9.80

2.89

2.33

June

12.9

10.4

45

15.3

10.8

8.E

7.2

6.1

5.9

6.7

6.4

4.6

4.0

3.2

2.7

6.1

5.3

3.0

E.45

2.20

2.30

2.20

1.75

1.70

1.60

1.16

3.0

3.8

1.70

*1.30

189.26

6.31

1.86

2.08

July

0.99

.83

.65

.50

2.35

4.1

2.05

1C. 7

9.9

3.3

1.90

1.40

5.2

7.4

2.6

£.15

1.95

1.22

.94

.83

1.45

2.9

1.65

1.10

1.30

1.50

.83

.63

.37

.34

.32

71.35

2.30

0.678

0.78

Aug.

0.29

*.18

.14

.12

.10

*.12

. 14

.08

.07

1.25

.88

.26

.23

.44

.14

.10

.07

.05

.12

.08

.19

.28

.14

.10

.08

.05

.04

.02

.02

.06

.28

6.10

0.197

0.058

0.07

Sept.

0.37

5.1

2.30

.46

.24

10.0

6.5

1.14

.61

.40

.32

.63

*1.35

.61

.69

4.9

4.0

3.0

1.22

2.15

1.45

.99

2.15

14.2

3.1

1.90

1.50

1.80

1.50

1.16

75.74

2.52

0.743

0.83

Calendar year 1955; Max 163 Min °-°l Mean 7.62 cfsm 2.25 In. 30.54

Water year 1955-56; Max 77 Min 0.02 Mean 8.22 Cfsm 2.42 In. 33.00

Peak discharge (base, 72 cfs).--Oct. 17 (12:30 a.m.) 75 cfs (2.28 ft); Oct. 31 (2:30 to 3:30 a.IT 

193 cfs (2.87 ft); Novi 4 (8:30 to 9:30 p.m.) 86 cfs (2.35 ft); Apr. 16 (4:30 p.m.) 112 cfs (2.51 

ft); Apr. 30 (3 to 4 a.m.) 82 cfs (2.33 ft); June 3 (4 a.m.) 107 cfs (2.48 ft).

* Discharge measurement made on this day.

Note. No gage-height record Dec. 21 to Jan. 6; discharge estimated on basis of weather records, 

recorded range in stage, and records for East Branch Swift River near Hardwick and Ware River near 

Barre. Stage-discharge relation affected by ice Jan. 25 to Feb. 8, Feb. 22-25, Kar. 10, 16, 17.
CONNECTICUT RIVER BASIN

East Branch Swift River near Hardwiok, Mass.

Location. Lat 42°23'36", long 72°14'21", on left bank 100 ft above spillway of regulating 

dam and 4.6 miles northwest of Hardwick, Worcester County.

Drainage area. 43.7 sq mi.

Records available.--January 1937 to September 1956. Published as "near Dana" January 1937 

to September 1939.

Gage.--Water-stage recorder. Concrete spillway sirce Mar. 12, 1940. Datum of gage is 

504.70 ft above mean sea level, datum of 1929.

Average discharge.--19 years, 72.2 cfs.

Extremes. Maximum discharge during year, 847 cfs Apr. 17 (gage height, 20.99 ft), from 

rating curve extended above 500 cfs on basis of computation of flow over dam at gage 

height 22.49 ft; minimum, 1.6 cfs Aug. 28.

1937-56: Maximum discharge, 6,780 cfs Sept. 21, 1938, average of slope-area and 

contracted-opening determinations; maximum gage height, 22.49 ft June 25, 1944; no flow 

Aug. 7, 14-21, 1939, Aug. 26-28, 1949, Aug. 31 to Sept. 6, Sept. 9-12, 1953.

Remarks. Records good except those for periods of no gage-height record or backwater from 

Quabbin Reservoir, which are fair.

Rating table, water year 1955-56, except periods of backwater from QuabDii 

Reservoir (gage height, in feet, and discharge, in cubic feet per second)

19.2

19.25

19.3

19.35

19.4 18

19.5

19.6

20.0

20.5

21.0

67

239

540

900

Discharge cubic feet per second, water year October 1955 to September 1P56

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

54

54

50

38

35

47

130

170

172

128

99

78

64

65

148

316

452

461

292

215

165

135

112

101

120

119

109

96

88

86

176

4,375

141

3.23

3.72

Nov.

208

159

124

133

521

426

255

183

148

140

170

258

225

233

261

208

196

172

145

124

123

117

110

105

108

105

96

89

86

81

5,309

177

4.05

4.52

Dec.

78

73

73

88

115

113

94

82

74

68

64

62

57

53

54

53

50

50

48

44

36

34

32

31

33

35

34

33

31

30

2£

1,749

56.4

1.29

1.49

Jan.

28

25

25

26

26

27

28

28

118

550

293

219

195

159

130

111

97

82

69

64

59

54

54

50

46

44

42

40

39

44

48

2,620

84.5

1.95

2.25

Feb.

44

46

46

42

45

46

62

56

54

53

54

57

57

54

57

64

59

69

64

57

53

46

48

46

57

84

97

96

80

1,693

58.4

1.34

1.44

Mar.

69

67

71

90

103

97

144

188

157

128

115

113

113

117

107

97

96

84

90

86

78

82

88

99

88

82

76

73

76

80 =;

3,w

97.7

2.24

2.58

Apr.

75

84

97

130

218

339

416

339

252

217

?4?

287

343

372

409

565

802

600

480

390

320

298

310

r' rJO

fte

245

225

240

574

616

10,021

334

7.64

8.53

May

454

295

258

224

201

177

142

151

128

144

110

113i n

95

92

84

79

72

66

68

62

58

6T" =

:c

60

70

80

68

60

90

3,803

123

2.81

3.24

June

120

130

160

190

Tso

120

90

66

58

52

50

45

40

35

32

29

27

25

23

22

21

21

20

25

32

25

30

45

48

36

1,767

58.9

1.35

1.50

July

28

24

21I"7

IS

26

28

25

28

29

25

21

20

43

64

51

38

29

23

18

17

17

17

16

16

17

16

13

11

9 3

o ' ,, 

734.3

23.7

0.542

0.62

 

Aug.

7.2

Sept.

6.4

678 7~4 5. 

i t i c, ^ Q

5.0

5.0

4.1

3.6

5.0

6.8

6.4

5.7

6.O

5.3

4.4

3.8

3.2

3.6

3.2

3.8

4.4

3.8

3.8

3.2

2.8

2.3

1.9

2.5

5.7

6.4

140.5

4.53

0.104

0.12

3.1

j.1

36

31

22

15

11

9.3

8.4

8.8

8.4

13

17

23

19

23

21

19

19

42

54

42

30

29

28

23

605.9

20.2

0.462

0.52

Calendar year 1955; Max 1,100 Min 0.2 Mean 9O.1 Cfsm 2.06 In. 27.98

Water year 1955-56: Max 802 Min 1.9 Mean 97.9 Cfsm 2.24 In. 30.51

Peak discharge (base. 550 

(2 to 5 p.m.) 600 cfs (2O.64 

1 p.m.) 428 cfs (20.53 ft ; 

(20.79 ft).

Note. No gage-height record Apr. 19-21, May 27 to June 19, June 21-28; discharge estimated on 

basis of weather records, recorded range in stage when available, and records for Ware River at 

Coldbrook. Backwater from Quabbin Reservoir Oct. 18 to Dec. 11, Apr. 9 to June 19.

_________________

50 cfs). 11 p.m. Oct. 17 to 2 a.m. Oct. 18, 547 cfs (2O.51 ft); Nov. 5 

.64 ft); Jan. 10 (12 m. to 6 p.m.) 574 cfs (20.24 ft): Apr. 7 (5 a.m. to 

j Apr. 17 (6 to 8 a.m.) 847 cfs (20.99 ft); Apr. 30 (1 to 3 p.m.) 654 cfs
204 CONNECTICUT RIVER BASIN

Swift River at West Ware, Mass.

Location.--Lat 42 0 16'04", long 72°19'59", on left bank at West Ware, Hampshire County, 

1.4 miles downstream from Quabbin Reservoir and 3| miles east of Belchertown.

Drainage area. 188 sq mi, includes 1.6 sq mi drained by Beaver Brook, flow of which is 

diverted from Ware River basin. Prior to January 1937, 186 sq mi.

Records available. July 1910 to September 1912 (twice-daily gage heights and corresponding discharges). October 1912 to September 1956.

Gage. Water-stage recorder. Datum of gage is 365.18 ft above mean sea level, datum of 

1929. Prior to Aug. 25, 1912, chain gage at site 400 ft upstream at same datum.

Average discharge.--44 years (1912-56), 309 cfs (adjusted for storage and diversions).

Extremes.--Maximum discharge during year, 1,870 cfs Apr. 30 (gage height, 8.37 ft); minimum daily, 47 cfs Oct. 2.

1910-56: Maximum discharge, 7,590 cfs Mar. 19, 1936 (gage height, 15.00 ft); minimum, 2.5 cfs Sept. 20, 1940; minimum daily, 15 cfs Sept. 20, 1940.

Remarks. Records good. Plow regulated since August 1939 by Quabbin Reservoir (see

p. 230). Diversion from Ware River to Quabbin Reservoir since 1940, from Quabbin Reservoir to Wachusett Reservoir since 1941, and from Quabbin Reservoir to Chicopee 

Valley aquaduct since 1950.

^evisi3 ions (w 

WSP 3P1031:

1925(M) .

 ater years) .--WSP 401: Drainage area. WSP 451: 1916. WSP 871: 1919.

1944 (changes in reservoir contents and adjusted figures only). WSP 1301:

Rating tables, water year 1955-56 (gage height, In feet, and 

discharge, In cubic feet per second)

Nov. 1 to Sept. 3O

2.0 

2.2 

2.5

3.0 183

4.0 399

5.0 670

2.1 43

2.5 98

3.0 184

4.0 426

5.0 725

6.0 1,040

7.0 1,390

8.2 1,810

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

26

29

30

31

Total

Mean

(t)

Oct.

61

47

115

106

106

110

109

62

48

117

107

69

152

109

67

54

158

265

401

426

428

375

299

346

369

338

373

375

*309

334

638

6,893

222

+453

Nov.

740

707

692

803

1,040

998

984

966

952

881

949

963

929

1,110

1,200

1,210

1,120

1,050

920

860

833

755

776

695

731

632

542

614

566

521

25,739

858

-138

Dec.

503

 461

390

398

500

485

464

443

432

340

292

382

368

355

342

335

258

234

316

306

294

289

280

208

182

180

258

258

256

243

179

10,231

330

-185

Jan.

149

147

239

233

228

223

158

128

*TSl

241

254

272

283

226

196

283

284

277

267

262

196

161

250

247

244

239

234

173

138

232

231

6,929

224

+68.2

Feb.

226

226

228

163

137

225

239

233

229

228

*162

142

227

223

224

222

220

166

138

224

223

133

2l8

217

167

138

225

231

227

5,861

202

+109

Mar.

218

222

165

138

225

227

249

250

254

191

163

248

205

179

185

190

135

108

202

206

205

*201

200

154

125

216

214

211

210

212

151

6,059

195

+308

Apr.

122

215

218

224

240

245

198

238

316

335

283

280

334

350

461

755

,130

,450

,510

,650

* ,520

,420

,530

,460

,370

,310

,240

,110

,360

,750

24,604

820

+570

May

*1.800

1,680

1,600

1,470

1,280

1,160

1,180

1,080

899

902

857

734

695

743

677

641

584

542

426

409

458

*404

405

382

314

210

190

329

268

156

22,776

735

-265

June

345

314

503

653

599

539

446

390

270

212

326

249

208

180

154

96

108

167

142

142

140

140

111

125

140

106

119

140

*130

102

7,296

243

+92.2

July

124

150

116

101

159

134

104

124

156

120

123

93

106

95

124

139

106

117

116

106

97

125

135

120

129

98

*86

95

128

121

87

3,634

117

-38.1

Aug.

98

117

130

106

127

151

129

129

130

129

108

128

149

130

129

129

129

108

127

152

129

130

128

130

106

125

150

130

131

131

129

3,954

128

-153

Sept.

106

127

127

151

130

124

108

60

48

115

118

115

117

105

60

50

117

118

116

105

104

59

49

115

103

103

104

106

59

48

2,967

98.9

+62.0

Adjusted for diversion and change in reservoir contents*

Mean 

Cf sm 

In.

675 

3.59 

4.14

720 

3.83 

4.27

Calendar year 1955 : 

Water year 1955-56:

145 

0.771 

0.89

292

1.55 

1.79

311 

1.65 

1.78

503 

2.68 

3.08

1,390 

7.39 

8.25

469 

2.49 

2.88

Observed

Max 1,210 Min 34 Mean 189 

Max 1,800 Mln 47 Mean 347

335 73. l| -25.4 

1.78 0.421 -0.135 

1.99 0.49 -0.16

161 

0.856 

0.95

Adjusted

Mean 411 cfsm 2.19 In. 29.68 

Mean 419 Cfsn 2.23 In. 30.35

* Discharge measurement made on this day.

t Change in contents in Quabbin Reservoir (adjusted for diversion from Ware River), diversion to 

Wachusett Reservoir, and diversion to Chocopee Valley aqueduct, equivalent In cubic feet per second.

* Negative figures indicate that evaporation and seepage from reservoir exceeded Inflow
CONNECTICUT RIVER BASIN 205

Quaboag River at West Brimfield, Mass.

Location. Lat 42°10'56", long 72°15'51", on right bank 10 ft upstream from abandoned highway bridge at West Brimfield, Hampden County, 0.9 mile upstream from Blodgett Mill Brook, 

and 3| miles northeast of Palmer. Prior to Nov. 1, 1955, at site 0.5 mile downstream.

Drainage area.--151 sq mi.

Records available.--August 1909 to August 1912 (twice-daily gage heights and corresponding 

discharge).September 1912 to September 1956.

Gage. Water-stage recorder. Altitude of gage is 390 ft (from topographic map). Prior to 

Aug. 19, 1912, staff gage and Aug. 19, 1912, to Oct. 31, 1955, water-stage recorder at 

several sites 0.5 mile downstream at different datum.

Average discharge. 44 years (1912-56), 246 cfs.

Extremes.--Maximum discharge during year, 1,510 cfs Apr. 18 (gage height, 6.63 ft); maximum gage height, 6.84 ft Jan. 10 (ice Jam); minimum daily discharge, 18 cfs Aug. 29. 

1909-56: Maximum discharge, 12.800 cfs Aug. 19, 1955 {gage height, 15.?6 ft, from 

floodmarks, present site and datum), from rating curve extended above 2,700 cfs on 

basis of slope-area determination of peak flow; minimum daily discharge, 7.8 cfs 

Oct. 11, 19, 1930.

Remarks. Records good except those for periods of ice effect and doubtful or no gageheight record, which are fair. Slight diurnal fluctuation at low flow by mill above 

station prior to 1956; regulation much greater prior to 1938.

Revisions (water years).--WSP 451: 1916. WSP 711: Drainage area. WSP 1301: 1918(M).

Rating tables, water year 1955-56, except periods of loe effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 1-31 Nov. 1 to Sept. 30

3.1 156 2.3 16 4.0 339

3.5 321 2.5 32 5.0 690

4.0 585 2.8 75 6.0 1,150

5.0 1,280 3.1 129 6.7 1,550

3.5 214

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19 * 

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

219

2O4

188

174

165

206

372

393

388

367

341

326

312

307

663

775

1,020

1,180

1,250 

1,200

1,140

1,060

959

868

808

715

665

620

580

590

760

18,813

607

4.02

4.63

Nov.

574

534

526

626

968

960

973

932

874

811

896

892

856

856

838

820

798

762

744 

706

630

590

558

534

498

475

441

425

394

510

20,801

693

4.59

5.12

Dec.

335

350

342

370

*405

582

550

540

326

302

286

270

250

240

230

220

210

200

195 

180

165

150

140

150

160

160

150

140

135

125

120

7,376

238

1.58

1.82

Jan.

110

105

110

115

120

125

130

115

230

450

558

618

646

614

598

566

526

355

594 

419

391

361

342

276

285

280

270

260

240

225

220

10,054

324

2.15

2.48

Fgb.

230

240

220

230

220

220

260

281

268

266

259

264

271

300

310

350

320

320

310 

300

270

220

240

250

280

410

440

410

370

8,329

287

1.90

2.05

Mar.

350

340

390

500

570

580

620

660

620

570

550

540

520

490

460

430

*278

376

361 

289

361

353

336

345

291

331

315

312

317

320

304

13,079

422

2.79

3.22

Apr.

309

334

388

464

690

906

1,020

996

932

942

991

1,030

1,070

1,100

1,140

1,260

1,460

1.500

1,430 

1,350

1,240

1,140

1,080

1,020

955

906

856

806

810

880

29,005

967

6.40

7.14

May

860

820

780

730

700

650

610

580

550

540

530

510

490

460

430

390

330

300

280 

265

*256

242

230

214

207

~2ie 201

230

226

225

250

13,302

429

2.84

3.28

June

320

350

450

500

460

420

370

300

250

220

210

190

170

150

135

125

130

125

120 

115

105

100

95

105

115

96

76

66

*59

53

5,980

199

1.32

1.47

July

56

58

56

50

52

85

90

85

90

80

72

82

77

80

84

81

78

75

70 

67

62

62

62

62

68

66

56

53

48

46

42.

2,095

67.6

0.448

0.52

Aug.

40

37

*33

31

29

29

30

28

25

24

23

22

22

24

20

20

20

20

21 

19

23

24

23

23

21

20

19

19

"19 18

21

747

24.1

0.160

0.18

Sept.

22

22

23

22

22

22

37

31

26

23

21

20

21

21

ii

22

27

32

29 

27

30

30

28

35

49

58

67

65

63

60

974

32.5

0.215

0.24

Calendar year 1955: Max 7,590 Mln 32 Mean 430 Cfsm 2.85 In. 38.64

Water year 1955-56: Max 1,500 Min 18 Mean 357 Cfsm 2.36 In. 32.15

Peak discharge (base. 840 cfs).--Oct. 19 (7 a.m. to 3 p.m.) 1,260 cfs (4.97 ft); Nov. 5 (2:30 to 

3 a.m.) 1,020 cfs (5.75 ft); Apr. 18 (10 a.m. to 2 p.m.) 1,510 cfs (6.63 ft).

* Discharge measurement made on this day.

Note. No gage-height record Oct. 26-31, Sept. 9-26, 29, 30; discharge estimated on basis of staffgage readings, weather records, and records for ftuinebaug River at Westvllle and Ware River at Coldbrook. Doubtful or no gage-height record Feb. 12 to Mar. 16, Apr. 29 to May 20, May 30 to June 28, 

July 1-3O; discharge estimated on basis of recorder graph, 1 discharge measurement, weather records, 

and records for stations mentioned above. Stage-discharge relation affected by Ice Nov. 30 to Dec.2, 

Dec. 7, 8, Dec. 12 to Jan. 10, Jan. 25 to Feb. 7.
206 CONNECTICUT RIVER BASIN

Chlcopee River at Indian Orchard, Mass.

Location. Lat 42°09'38", long 72°30'52", on left bank 1,000 ft downstream from West 

Street Bridge at Indian Orchard, Hampden County, and 1.1 miles upstream from Puller 

Brook.

Drainage area.--688 sq mi.

Records available. August 1928 to September 1956. Published as "at Bircham Bend" prior 

to November 1938.

Gage.--Water-stage recorder. Altitude of gage is 125 ft (from topographic map). Prior 

!fo Nov. 1, 1938, at site if miles downstream at different datum.

Average discharge. 28 years, 1,119 cfs (adjusted to present drainage area and for storage and diversions).

 Extremes.--Maximum discharge during year, 6,690 cfs Apr. 17 (gage height, 10.34 ft); minimum daily, 43 cfs Sept. 16.

1928-56: Maximum discharge, 45,200 cfs Sept. 21, 1938, by computation of flow over 

dam; minimum daily, 16 cfs several times in 1929-31.

Remarks. Records excellent. Diversion since 1941 from 186 sq mi in Swift River basin 

and at times since 1931 from 97 sq mi in Ware River basin for Boston metropolitan district and, since 1950, for city of Chicopee. Diversion from Ludlow Reservoir for 

Springfield and, prior to 1952, for Chicopee'. Plow regulated by powerplants above 

station, by Quabbin Reservoir on Swift River since 1939 (see p. 230), a-^d by smaller 

reservoirs.

Revisions (water years). WSP 711: Drainage area. WSP 1231: 1934.

Rating tables, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

Oct. 1 to Nov. 4 Nov. 5 to Sept. 3O

4.8 

5.3 

6.0 

7.0 

9.0

455

760

1,330

2,310

4,720

3.2

3.5 

4.0 

4.5 

5.0

43

83

195

380

650

6.0 1,390

7.0 2,310

9.0 4,720

11.0 7,810

Discharge

Day

1 

2

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

17 

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

(t)

Oct.

696 

509

820

802 

611

713

1,240

*1,690

1,570

1,440

1,260

1,060

1,050

934

*1,530

2,990

4,200 

4,510

*3,950

3,630

3,270

2,820

2,400

2,220

2,310

2,110

1,990

1,870

1,670

1,640

*3,040

60,545

1,953

+558

Nov.

3,110 

2,660

2,430

2,490 

4,850

5,030

4,410

3,850

3,390

3,090

3,580

3,890

3,590

3,670

3,900

3,730

3,640 

3,270

2,900

2,710

2,600

2,340

2,260

2,170

2,170

2,000 

1,780

1,850

1,760

1,540

90,660

3,022

-135

Dec.

1,510 

1,460

1,420

1,390 

1,920

1,790

1,670

*1,520

1,440

1,210

968

1,260

1,220

1,090

1,020

1,050

860 

726

1,020

893

698

702

664

563

636

684 

794

746

660 

638

442

32,664

1,054

-186

Jan.

535 

418

606

631 

548

715

394

542

924

*2,650

2,640

2,380

2,350

2,240

1,980

1,930

1,740 

1,510

1,200

1,340

1,160

880

1,260

1,140

914

956 

910

612

602

1,040

998

37,745

1,218

+120

Feb.

976 

962

980

675 

698

985

989

1,010

1,110

*1,070

870

1,070

1,330

1,230

1,180

1,310

1,170 

970

834

1,150

1,110

611

990

917

744

1,630 

1,550

1,430

1,160

30,711

1,059

+112

Mar.

1,080 

1,080

1,200

1,740 

1,990

1,690

2,150

2.550

2,170

1,740

1,600.

1,850

1,700

1,580

1,500

1,410

*939 

1,065

1,350

1,220

1,290

1,320

1,240

1,260

1,000

1,380 

1,270

1,160

1,160

1,180

1,050

44,909

1,449

+313

Apr.

894 

1,360

1,520

1,930 

3,080

4,460

4,630

3,800

3,130

3,250

3,630

3,740

3,950

4,060

4,280

5,040

6.290 

5,990

5,390

5,040

4,800

4,660

*4,580

4,600

4,230

3,930 

3,760

3,390

3,940

5,320

_

118,674

3,956

+705

May

5,060 

4,620

4,360

3,930 

3,510

3,130

3,050

2,820

2,490

2,410

2,440

2,180

2,040

2,090

1,920

1,760

1,700 

1,530

1,430

1,300

1,440

*1,320

1,130

1,190

1,100

818

742

1,280

1,170

729

1,090

65,779

2,122

-261

June

1,390 

1,640

2,320

2,750 

2,210

1,840

1,580

1,430

1,160

816

1,240

1,080

922

753

780

584

749 

794

804

578

528

494

122

554

715

*570 

*545

519

486 

154

29,647

988

+95.1

July

33") 

462

416

277 65<5

723

303

425

*4"§ 8031?

48 <,

466 47"

18"

32?

65£

606 50"

47"

450

22."

174 53"

49"

51."

456

19J.

105 54':

42o

15,626

440

-59.fi

Aug.

550 

520

520

206 

51

554

292

298

326

302

216

50

438

3l4

512

307

332 

188

53

*363

*336

298

1 308

340

161

96 

378

281

297 

294

326

8,489

274

. -156

Sept.

184 

45

130

426 

338

359

386

195

44

450

341

300

328

325

 178

45

454 

321

438

404

411

178

138

586

465

471 

323

514

197 

233

9,201

307

+68.9

Adjusted for diversion and change in reservoir contents

Mean 

Cfsm 

In.

2,511 

3.65 

4.21

2,887 

4.2C 

4.68

Calendar year 1955; 

Water year 1955-56:

867 

1.26 

1.45

1,337

1.94 

2.24

1,171 

1.70 

1.84

1,762 

2.56 

2.95

4,661 

6.77 

7.56

1,861 

2.70 

3.12

Observed

Max 30,600 Min 47 Mean 1,449 

Max 6,290 Min 43 Mean 1,483

1,081 

1.57 

1.75

400 

0.581 

0.67

118 

0.172 

0.20

376 

0.547 

0.61

Adjusted

Mean 1,693 Cfsm 2.46 In. 33.41 

Mean 1,581 Cfsm 2.30 in. 31.28

* Discharge measurement made on this day.

t Diversion from Ware River, change In contents In Quabbin Reservoir (adjusted fo" diversion from 

Ware River), diversion to Wachusett Reservoir and city of Chicopee, change In contents In Ludlow 

Reservoir, and diversion from Ludlow Reservoir, equivalent In cubic feet per second.
CONNECTICUT RIVER BASIN 807

Westfield River at Knlghtville, Mass.

Locatlon. Lat 42°17'16", long 72"51 "53", on left bank at Knlghtville, Hampshire County, 

0.2 mile downstream from Knightville Dam, 0.2 mile upstream from Sykes Brook, 

2.4 miles upstream from Middle Branch, and 3.5 miles north of Huntington.

Drainage area. 162 sq mi.

Records available.--August 1909 to September 1956.

Gage. Water-stage recorder and concrete control. Datum of gage is 461.25 ft above mean 

sea level, datum of 1929 (levels by Corps of Engineers). Prior to Jan. 11, 1935, chain 

gage at site 0.5 mile upstream at different datum. Jan. 11, 1935, to May 20, 1940, 

water-stage recorder at site 700 ft upstream at datum 10.57 ft higher. May 21 to 

Dec. 19, 1940, staff gage at site 700 ft upstream at datum 18.75 ft higher.

Average discharge. 47 years, 328 cfs (adjusted for storage).

Extremes.--Maximum discharge during year, 4,370 cfs May 2 (gage height, 6.53 ft); minimum, 14 cfs Aug. 28; minimum daily, 14 cfs Aug. 28.

1909-56: Maximum discharge, 37,900 cfs Sept. 21, 1938 (gage height, 29.58 ft, from 

floodmarks , site and datum then in use), from rating curve extended above.3 ,800 _cfs on 

basis of slope-area determinations at gage heights 24.07 and 29.58 ft; minimum, 0.6 cfs 

Aug. 11, 1941; minimum daily, 4 cfs Aug: 10, 1913.

Remarks. Records excellent except those for periods of ice effect, no gage-height record, 

or shifting control, which are good. Flow regulated by Knightville Reservcir since 

1941 (see p. 230).

Revisions (water years). WSP 415: 1909-12. WSP 1001: 1941-43. WSP 1231: 1910. 1912,

 1913(M), calendar years, 1914-15, 1916-19(M) , 1921-23(M) , 1925-27(M) , 1929-33(M) , 

1935(M).

Rating table, water year 1955-56, except periods 

control (gage height, In feet, and discharge,

l.B 

2.0 

2.3

2.6 

3.0 

3.5

59

114

225

440

f Ice effect or shifting 

cubic feet per second)

765

1,220

1,810

3,310

5,470

Disc/large, in cubic feet per second, water year October 1955 to September 1936

Day

1

2

3

4

5

6

7

8

9

10

11

12

13 

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

33

31

Total

Mean

(t)

Oct.

187

148

116

101

Si

389

1,680

922

600

385

292

243

212 

257

132

161

1,160

*3,080

3,380

3,470

3,490

3,490

5,550

3,550

3,550

3,470

3,070

626

425 

433

560

43,220

1,394

+126

Nov.

1,660

2,230

2,460

1,290

153

1,120

2,520

5,210

3,200

2,110

870

966

1,050 

1,320

1,890

1,050

988

1,200

698

592

404

540

462

462

473

425

352

343

339 

265

34,641

1,155

-128

Dec.

255

239

269

313

569

467

262

229

232

229

212

170

*138 

141

187

161

133

130

130

125

91

85

91

95

100

110

110

110

105 

91

83

5,662

183

-0.34

Jan.

82

80

75

72

T2

75

80

80

292

581

676

1,110

1.400 

996

410

326

277

212

154

159

184

151

136

114

105

105

104

106

108

105

8,535

275

+2.28

Feb.

105

105

105

105

104

106

108

112

112

112

112

141

170 

*170

164

164

161

159

151

148

131

95

88

110

148

156

341

324

212

4,219

145

-0.84

Mar.

206

184

148

?33

206

187

280

624

594

395

339

277

284

269

230

175

160

190

206

190

195

195

206

212

205

199

196

187

184 

184

181

7,521

243

-1.27

Apr.

181

255

261

355

790

1,260

1,440

922

683

648

870

1,030

1,220 

1,190

1,360

1,090

1,380

2.710

2,680

*2,440

1,220

1,630

1,730

1,120

1,000

1,100

972

1,520

1,440 

561

35,058

1,169

+197

May

326

2,570

4.030

3,530

2,770

1,600

939

750

634

712

676

614

600

537

473

430

395

357

348

317

280

250

239

243

*209

*193

250

381

284 

308

518

25,763

831

-192

June

558

357

1,190

1,160

614

440

348

284

239

239

322

243

193 

167

143

126

121

108

93

86

*82

80

75

70

65

58

56

64

58

il

7,686

256

-1.04

July

46

44

39

35

47

142

121

86

72

62

50

43

48 

359

208

116

88

69

59

52

52

95

97

80

142

99

75

56

46 

39

a32

2,599

83.8

0

Aug.

a28

a27

a26

a26

a26

a24

a24

a23

*22

21

22

22

22 

25

25

22

19

18

18

18

18

19

20

22

18

16

16

14

18

21

28

668

21.5

-0.04

Sept.

36

44

377

124

73

55

52

49

39

34

31

12

32 

73

56

205

381

285

161

131

182

116

97

1,010

434

216

148

133

151 

124

4,879

163

+0.08

Adjusted for change In reservoir contents

Mean 

In.

1,521

9.39 

10.82

1,027 

6.34 

7.07

Calendar year 1955: 

"Water year 1955-56:

182 

1.12 

1.30

278 

1.72 

1.98

145

0.895 

0.96

241 

1.49 

1.72

1,365 

8.43 

9.40

639 

3.94 

4.55

Observed

Max 3,550 Min 9.4 Mean 506 

Max 4,030 Min 14 Mean 493

255 

1.57 

1.76

83.8 

0.517 

0.60

21.5 

0.133 

0.15

163 

1.01 

1.12

Adjusted

Mean 506 Cfsm 3.12 In. 42.36 

Mean 493 Cfsm 3.04 In. 41.43

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Knlghtville Reservoir.

a No gage-height record; discharge estimated on basis of weather records and records for West 

Branch Westfield River at Huntlngton.

Note.--Stage-discharge relation affected by ice Nov. 30, Dec. 1, Dec. 18 to Jan. 1, Jan. 25, 26, 

Jan. 31 to Feb. 4, Feb. 22-24, Mar. 15-18, 21, 22, 25. Shifting-control method used Ma-' 6 to July 2, 

July 5-30, Aug. 14, 15,'Aug. 30 to Sept. 30.
CONNECTICUT RIVER BASIN

Sykes Brook at Knlghtville, Mass.

Location. Lat 42°17'27", long 72°52'15", on right bank 200 ft downstream from bridge on 

State Highway 112 at Knlghtville, Hampshire County, 0.4 mile upstream from mouth, 

0.4 mile west of Knlghtville Dam, and 3.5 miles north of Huntlngton.

Drainage area. 1.64 sq ml.

Records available . June 1945 to September 1956.

Gage. Water-stage recorder and concrete control. Datum of gage Is 641.40 ft above mean 

sea level, datum of 1929.

Average discharge. 11 years, 2.90 cfs.

Extremes . Maximum discharge during year, 149 cfs Oct. 15 (gage height, 2.915 ft), from 

rating curve extended above 80 cfs; minimum, 0.07 cfs Aug. 27, 28.

1945-56: Maximum discharge, 680 cfs Aug. 19, 1955 (gage height, 4.485 ft), from 

rating curve extended above 80 cfs; minimum, 0.03 cfs Aug. 31, Sept. 1, 1353.

Remarks .--Records good except those for periods of ice effect, which are fair.

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, In feet, and discharge, In cubic feet per second)

Oct. 15 bo Aug. 1 Aug. 1 to Seit. 30

2.9

56

114

Note. Same 

as following 

table below 

1.9 ft.

1.6

1.7

2.1

3.8

1.5

1.6

1.14 

2.1

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Oct.

1.81

1.34

1.05

.97

.90

7.7

10.3

7.2

5.2

3.9

3.2

2.9

2.5

S.4

39.

*87

*44

*21

19.2

12.6

9.6

7.7

6.4

6.2

6.6

5.2

4.6 *4.2

4.0

12. 6

30

437.27

14.1

8.60

9.92

Nov.

11.5

8.2

7.0

23

12.

16.4

11.5

9.4

7.6

6.8

9.6

9.8

8.6

14.2

9.6

9.6

10.0

7.2

6.4

5.6

5.1

4.6

4.2

4.2

3.9

3.6

3.2

3.2

3.0

2.7

269.7

8.99

5.48

6.12

Dec.

1 2.6

2.4

2.8

5.7

5.2

3.8

3.0

2.8

2.6

2.3

2.2

1.99

1.87

1.69

1.75

1.5

1.57

1.51

1.34

1.00

.90

.86

.85

1.00

1.3

1.2

1.00

.84

. 76

'.n

59.88

1.93

1.18

1.36

Jan.

0.75

.66

.69

.72

.74

.75

.75

.80

7.5

5.5

5.0

8.0

8^4

4.3

3.4

3.1

2.9

2.2

2.1

2.3

1.9

1.7

1.6

1.4

1.3

1.35

1.4

1.3

1.2

1.55

1.4

76.66

2.47

1.51

1.74

Feb.

1.15

1.15

1.19

1.0

1.09

1.05

1.75

1.51

1.51

1.45

1.57

3.4

2.6

2.2

2.2

2.2

2.1

2.1

1.93

1.69

1.4

1.2

1.15

1.1

2.5

3.5

2.8

2.3

2.1

-----

52.89

1.82

1.11

1.20

Mar.

2.0

1.87

27T

3.0

2.5

2.2

7.8

5.0

3.6

3.1

2.9

3-.0

2.8

2.9

2.5

2.2

2.5

2.5

2.0

2.1

2.0

2.1

2.2

2.1

2.0

2.1

1.93

1.93

1.99

1.93

1.87

80.82

2.61

1.59

1.83

Apr.

2.1

2.4

3.4

5.4

12.0

13.4

11.7

7.4

6.2

8.6

11.2

13.4

13.6

15.0

14.4

'2631

21

17.1

*13.4

11.9

12.6

12.2

11.5

9.8

9.6

9.2

14.6

28

28

396.1

13.2

8.05

8.98

May

14.2

10.2

10.8

8.4

7.0

6.2

5.6

4.8

4.3

4.4

3.9

3.7

3.4

3.2

3.0

2.9

2.7

2.8

2.9

2.7

2.2

2.1

2.1

*1.87

1.69

1.69

2.6

2.4

2.1

2.2

2.9

130.95

4.22

2.57

2.97

June

3.4

3.0

12.2

5.8

3.9

3.2

2.7

2.1

1.93

2.1

2.2

1.75

1.39

1.14

.93

.80

.78

.70

.58

.50

*.48

*.47

.40

.36

.32

.29

.41

.39

.30

. 26

54.78

1.83

1.12

1.24

July

0.23

.22

.20

.17

.67

1.01

.68

.42

.51

.34

.26

.22

.63

1.19

.56

.46

.42

.29

.23

.21

.34

.58

.40

.94

J^28

.59

.36

.26

.21

.17

.15

14.20

0.458

0.?79

0.32

Aug.

*0.12

.13

.12

.11

.11

.11

.11

.10 *.10

.11

.10

.10

.12

.15

.10

.09

.09

.09

.12

.10

.12

.15

.11

.10

.09

.08

ToT

.09

.14

.25

3.45

0.111

0.068

0.08

Sept.

0.16 .23"

.18

.11

.10

.13

.18

.11

.10

.09

.09

.09

.09

.09

.11

.e;

.76

.56

.27

.33

.25

.20

.31

1. 29

.61

.33

.25

.41

.46

.33

8.85

0.295

0.180

0.20

Calendar year 1955: Max 159 Mln 0.06 Mean 4.65 Cfsm 2.84 In. 38.52

Water year 1955-5& Max 99 Mln 0.07 Mean 4.33 Cfsm 2.64 In. 35.96

Peak discharge (base, 55 efs).--0et. 15 (11 a.m.) 149 cfs (2.915 ft); Oct. 31 (2 a.m.) 55 cfs 

!.39 ft); Nov. 5 (3 a.m.) 64 cfs (2.45 ft); Apr. 16 (2:30 to 3:30 p.m.) 42 cfs (2.30 ft); Apr. 28 

.1 a.m.) 45 cfs (2.325 ft). 

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Nov. 30, Dec. 7, 16, Dec. 20 to Jan. 7, Jan. 9, 

i, 19, Jan. 21 to Feb. 2, Feb. 4, 15-18, 21-26, Feb. 28 to Mar. 1, Mar. 9, 10, 16-19, 21-25.
CONNECTICUT RIVER BASIN 209

Middle Branch Westfield River at Goss Heights, Mass.

Location. Lat 42°15'31", long 72°52'23", on right bank at upstream side of highway bridge 

Lit Goss Heights, Hampshire County, 0.35 mile upstream from mouth and 1.7 miles north of 

Huntington.

Drainage area.--52.6 sq mi.

Records available.--July 1910 to September 1956.

Ga£e_. Water-stage recorder. Datum of gage is 400.30 ft above mean sea level, dftum of 

1929. Prior to Sept. 8, 1912, chain gage at same site. Prior to June 25, 19CO, at 

datum 1.00 ft higher.

Average discharge.--46 years, 106 cfs.

Extremes. Maximum discharge during year, 6,460 cfs Oct. 15 (gage height, 6.91 ft); minimum, 1.9 cfs Aug. 27, 28.

1910-56: Maximum discharge, 19,900 cfs Sept. 21, 1938 (gage height, 10.61 ft), from 

rating curve extended above 3,200 cfs on basis of mean of two contracted-opening determinations of peak flow; maximum gage height, 13.87 ft Mar. 12, 1936 (ice Jam); 

practically no flow Sept. 3, 22, Oct. 20, 1910, July 30, 1912, Oct. 26, 27, 1914.

Jjemarks. Records good except those for periods of ice effect or doubtful gage-height record, which are fair. Some diurnal fluctuation at low flow prior to 1952 by mill above 

station.

Revisions (water years).--WSP 415: 1910-12, calendar years. WSP 781: 1933(M) , drainage 

area.

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 1 to Apr. 28 Apr. 29 to Sept. 30

1.0

1.4 

Z.O

51

80

166

361

2.5 

3.0 

4.0 

5.0 

6.0

575

860

1,770

3,090

4,750

0.02 

.1

.3 

.5

1.9

4.9

14

27

0.7 

1.0 

1.4

46

86

166

Note.--Same as preceding table above 1.4 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16*

17

18

19

20

21

22

23

24 

25

26

27 

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

48

38

30

25

ZZ

291

*484

294

2O2

130

94

*80

69

254

*4.570

3,020

*1,220

*564

515

350

253

196

164

156 

238

171

141 

*123

114

332

1,540

15,728

507

9.64

11.12

Nov.

398

260

208

738

1,490

558

369

312

238

196

244

277

294

628

380

305

384

241

193

169

148

d!30

dllS

d!27 

dl!2

dlOO

d88 

d86

d76

dJ3§

8,933

298

5.67

6.32

Dec.

d59

d61

d64

d!25

146

100

*70

66

64

58

52

49

44

46

49

37

44

42

40

24

22

22

22

26 

35

31

26 

22

20

21

20

1,507

48.6

0.924

1.07

Jan.

20

18

20

23

25

*25

23

22

150

330

310

340

380

185

130

104

89

58

54

62

52

46

45

38 

36

36

38 

35

36

44

40

2,814

90.8

1.73

1.99

Feb.

31

31

32

28

37

30

43

40

36

*34

33

75

57

46

41

43

40

39

43

39

29

28

3O

27 

40

130

120 

80

57

---__.-

1,339

46.2

0.878

0.95

Mar.

54

52

62

84

68

56

170

140

100

80

72

-91

82

76

66

56

64

66

52

*56

54

56

61

55 

52

52

49 

48

48

54

51

2,127

68.6

1.30

1.50

Apr.

'52 50

87

127

346

490

460

284

222

247

323

380

424

440

448

1,020

956

647

514

*408

396

556

478

353 

334

342

346 

884

1,150

1.220

13,984

466

8.86

9.89

May

556

4l2

486

388

334

263

222

188

159

202

188

159

154

138

127

111

106

102

97

91

82

75

72

73 

*64

*59

77 

89

73

80

161

5,388

174

3.31

3.81

June

180

131

456

241

149

111

92

79

67

68

88

68

54

44

36

32

29

28

24

*22

20

21

18

18

16

15

15 

18

15

13

2,168

72.3

1.37

1.53

July

12

11

10

9.7

15

33

28

21

18

15

13

11

13

102

56

27

24

20

15

12

13

25

22

22 

81

37

23 

17

13

11

10

739.7

23.9

0.454

0.52

Aug.

8.8

7.5

7.0

6.2

5.3

4.9

5.3

4.9

*4.5

4.1

4.1

4.1

4.1

5.8

5.8

4.1

3.3

3.3

4.1

3.7

4.9

5.8

4.1

3.7 

3.0

2.2

H2.6

4.5

13.

145.5

4.69

0.089

0,10

Sept.

11

13

68

30

17

11

13

11

7.9

5.8

"its 4 9

4.9

5.3

7.5

37

71

56

32

30

37

25

19

106

58

37 

35

46

33

1,113.2

37.1

0.705

0.79

Calendar year 1955: Max 5,190 Min 1.4 Mean 164 Cfsm 3.12 In. 42.29

Water year 1955-56: Max 4,570 Min 1.9 Mean 153 Cfsm 2.91 In. 39.59

Peak discharge (base, 1.65O cfs). Oct. 15 (6 a.m.

cfs (5.21 ft); Nov. 5 (3:3O a.m.) 2,330 cfs (4.46 ft

6,460 cfs (6.91 ft): Oct. 31 (2 a.m.) 3.420

: Apr. 29 (1:30 a.m.) 2,480 cfs (4.58 ft).

* Discharge measurement made on this day.

d Doubtful gage-height record; discharge computed on basis of recorded graph, weather records, and

records for West Branch Westfield River at Huntington.

Note. Stage-discharge relation affected by ice Dec. 6 to Jan. 13, Jan. 18 to Mar. 11, Mar. 14 to

Apr. 2. Discharge for periods Dec. 6, June 20 to July 13, July 16-24, July 27 to Sept. 2, Sept. 5-

15, 2o, 22, 23 computed from once-daily chain-gage readings.
S10 CONNECTICUT RIVER BASIN

West Branch Westfield River at Huntington, Mass.

Location. Lat 42°14'14 M , long 72°53'46", on left bank at Huntington, Hampshire County, 

0.4 mile downstream from Roaring Brook and lj miles upstream from mouth.

Drainage area.--93.7 sq mi.

Records available. September 1935 to September 1956.

Gage. Water-stage recorder. Datum of gage is 388.60 ft above mean sea level, datum of 

1929.

Average discharge. 21 years, 195 cfs.

Extremes.--Maximum discharge during year, 12,400 cfs Oct. 15 (gage height, 10.47 ft); minimum, 6.7 cfs Aug. 27, 28.

1935-56: Maximum discharge, 26,100 cfs Aug. 19, 1955 (gage height, 15.27 ft), from 

rating curve extended above 9,500 cfs on basis of slope-area determination of peak flow; 

minimum, 3.3 cfs Aug. 9, 1955.

Remarks. Records good except those for periods of ice effect, which are fair. Some diurnal fluctuation at low flow caused by mill above station.

Rating tables, water year 1955-56, except periods of ice effect (gage

height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used Oct. 23, 24, 27-29, Nov. 20 to Dec. 13, 

Dec. 15, 17, Jan. 10)

1.2 

1.5

1.8 

2.1

Oct. 1 tc

31

40

75

132

226

375

10

2 5

3.0

4.0

6.0

8.0

10.0

625

970

1,780

4,100

7,340

11,400

Jan. 11 to Sept. 30

0.4

.6

.8

1.1

1.4

1.7

4.9

12

85

155

2.0 

2.5 

3.0 

4.0 

5.0

270

560

950

1,780

2,830

Discharge, in cubic feet ppr second, water year October 1955 to Septemler 1956

D*J

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

26

29

30

31

Total

Mean

Cfsm

In.

Oct.

102

83

62

53

4J3

465

990

753

514

320

222

*167

142

599

9,270

*7,160

*2,330

*1,070

980

711

539

429

348

336

528

381

305

*261

235

698

2,140

32,262

1,041

11.1

12.81

Nov.

716

502

399

1,25Q

2,100

1,030

739

651

502

411

477

573

592

1,010

704

592

746

489

375

336

300

261

235

257

226

200

177

174

153

135

16,314

544

5.61

6.48

Dec,

120

123

130

252

500

208

*142

137

132

114

105

100

88

94

99

75

86

86

81

48

45

44

43

51

70

64

53

45

40

42

41

3,060

98,7

1.05

1.21

Jan.

40

35

37

42

46

47

*48

42

260

550

511

_ 574

638

325

230

192

165

110

104

120

98

89

87

73

70

70

73

68

64

76

73

4,957

160

1.71

1.97

Feb.

61

61

£4

56

65

60

73

74

73

74

72

127

120

*94

85

69

84

82

69

80

59

56

60

54

82

300

216

160

115

2,687

92.7

0.989

1.07

Mar.

110

111

130

168

138

127

355

310

211

165

152

199

178

162

144

105

125

130

110

*115

115

110

125

115

105

105

100

100

100

110

105

4,435

143

1.53

1.76

Apr.

106

118

192

285

694

910

870

560

442

472

588

678

750

774

630

1,930

1,820

1,160

910

*686

654

934

836

616

581

609

626

1,530

2,390

2,340

25,893

863

9.21

10.28

May

*1,010

734

814

654

56?

460

406

345

300

406

360

305

260

252

244

215

211

199

199

188

158

144

141

144

»120

111

143

165

130

118

155

9,678

312

3.33

3.84

June

192

178

578

350

226

178

144

118

98

100

120

91

76

65

54

48

45

43

37

*34

32

34

30

29

27

25

¥5

30

27

3,059

102

1.09

1.21

July

21

20

18

16

27

82

55

38

33

28

22

20

23

~93 179

50

41

33

25

21

23

44

40

30

63

43

28

22

19

16

1,187

38.3

0.409

0.47

Aug.

14

13

12

11

10

10

10

9.8

*9.0

8.7

8.7

8.7

8,4

9.8

10

9.4

8.4

8.0

9.0

8.7

9.4

9.8

9.8

8.7

8.0

7.3

7.0

6.7

7.6

11

.IS

299.9

9.67

0.103

0.12

Sept.

19

25

£2

31

19

15

18

16

13

11

10

9.8

978

9.8

11

33

73

62

37

31

47

30

25

292

119

61

43

43

60

44

1,279.4

42.6

0.455

0.51

Calendar year 1955: Max 10,500 Min 3.3 Mean 312 Cfsm 3.33 In. 45.18

Water year 1955-56: Max 9,270 Min 6.7 Mean 287 Cfsm 3.06 In. 41.73

Peak discharge (base, 2,700 cfs). --Oct. 15 (11:30 a.m.) 12,400 cfs (10.47 ft): 03t. 31 (1:30 a.m.)

4,280 cfs (6.13 ft); Nov. 5 (3:30 a.m.) 3,090 cfs (5.22 ft); Apr. 16 (9:30 p.m.) 3,150 cfs (5.27 ft);

Apr. 29 (1 a.m.) 5,030 cfs (6.62 ft).

* Discharge measurement made on this day.

Note. --Stage-discharge relation affected by ice Nov. 30, Dec. 1, 11-13, 16, 17, Dec. 20 to Jan. 6,

Jan. 8-10, 18, 24, 25, 31, Feb. 1, 4-6, 15-18, 21-26, Feb. 28 to Mar. 1, Mar. 16-31.
CONNECTICUT RIVER BASIN 211

Westfield Little River at outlet of Cobble Mountain Reservoir, 

near Westfield, Mass.

Location. --La t 42°07'34", long 72°53'37" at Cobble Mountain Dam, 7i miles west of Westfield, Hampden County.

Drainage area. 45.8 sq mi.

Records available.--July 1905 to September 1956. 

as "near Westfield" 1912-35.

Published as "near Blandford" 1905-11 and

Gage. Venturi meters at outlet tunnel at powerhouse 2.4 miles downstream. Prior to 

Mar. 1, 1910, staff or chain gages at site a quarter of a mile upstream and Mar. 1, 

1910, to Sept. 30, 1935, water-stage recorder at diversion dam 2| miles downstream.

Average discharge. 46 years (1910-56), 92.0 cfs (adjusted to present drainage area).

Remarks.--Discharge computed on basis of flow through Venturi meters and flow over reservoir spillway or through bypass tunnel. Flow regulated by Borden Brook Reservoir since 

1910 and Cobble Mountain Reservoir since August 1931 (see p. 230); discharge adjusted 

for effect of this regulation.

Cooperation. Records furnished by Board of Water Commissioners, Springfield. 

Revisions. WSP 501: Drainage area.

Monthly discharge., In cubic feet per second, water year 

October 1955 to September 1956

Month

December. ............

Calendar year 1955.

September, ...........

Water year 1955-56.

Mean

44.2

184

75.3

42.6

4.34

149

Per square 

mile

5.92

.965

4.02

1.64

.397

.095

3.25

Runoff In 

Inches

1.11

54.64

1.53

1.90

.46

.11

44.19

Note. Negative figures Indicate that evaporation ahd 

seepage from reservoirs exceeded Inflow.
212 CONNECTICUT RIVER BASIN

Westfield River near Westfield, Mass.

Location. Lat 42°06'24" ) long 72°41'58", on left bank 0.7 mile downstream from Great 

Brook and 3 miles east of Westfield, Hampden County.

Drainage area.--497 sq mi.

Records available. June 1914 to September 1956.

Gage. Water-stage recorder. Datum of gage is 98.25 ft above mean sea level, datum of 

1929. Prior to Nov. 3, 1933, on right bank at same datum.

Average discharge. 42 years, 962 cfs (adjusted for diversion and, since October 1931, 

for storage).

Extremes.--Maximum discharge during year, 31,100 cfs Oct. 16 (gage height, 21.79 ft), 

from rating curve extended above 18,000 cfs on basis of computations cf flow over dam 

at gage heights 27.20, 29.40, and 34.2 ft; minimum, 81 cfs Aug. 27; minimum daily, 

87 cfs Aug. 27.

1914-56: Maximum discharge, 70,300 cfs Aug. 19, 1955 (gage height, 34.2 ft, from 

floodmarks), from rating curve extended above 18,000 cfs as described above; minimum, 

9 cfs Oct. 2, 1921.

Remarks. --Records excellent except those for periods of ice effect, whlcl" are good. Flow 

regulated by diversion from Westfield Little River for municipal supply of Springfield 

and by Borden Brook Reservoir, Cobble Mountain Reservoir since 1931, and Knightville 

Reservoir since 1941 (see p. 230).

Revisions (water years).--WSP 601: 1924(M). WSP 756: Drainage area. WSP 1051: 1919- 

21(M) , 1925(M). W5F 1231: 1915-16(M), 1920.

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Nov. 1 to Sept. 30

4.0 

4.5 

5.0 

6.0

418

645

945

1,690

8.0

10.0

15.0

20.0

3,720

6,440

15,000

36,500

2.8 

3.0 

3.5 

4.0

81

115

254

445

5.0

7.0

9.0

11.0

1,000

2,660

4,990

7,970

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8 

9

10

11

12

13

14

:s

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

636

525

532

481

453

752

3,890

2,400 

1,850

1,290

994

819

610

946

19,900

24,300

11,100

*7,910

7,380

6,340

5,620

5,000

4,740

4,680

5,050

4,830

4,590

2,510

1,720 

1,870

8 , 280

142,188

4,587

+333

Nov.

*4,620

4,380

4,440

5,240

7,920

4,140

4,960

5,750 

5,940

4,180

2,880

2,900

3,230

4,280

4,170

3,360

3,180

3,360

2,090

1,820

1,430

1,670

1,510

1,480

1,390

1,350

1,110

1,310

1,400 

1,340

96,830

3,228

-187

Dec.

1,250

1,400

1,200

1,340

1,800

1,650

1,350

*1,210 

1,200

994

802

886

856

894

949

840

678

520

746

924

bl,020

bl,060

1)930

b730

456

568

669

665

706 

534

400

29,127

940

-200

Jan.

336

310

1T70"

885

782

556

569

368 

b950

*2,210

2,130

2,600

3.230

2,260

1,290

1,220

1,140

915

928

860

684

562

598

624

556

718

672

510

396 

770

647

30,946

998

-57.6

Feb.

560

614

531

392 ~4~0"7

448

558

560 

525

572

518

915

940

743

705

*700

606

596

556

585

476

410

470

422

580

945

994

1,050

700

18,078

623

+48.6

Mar.

664

656

774

850

898

772

1,540

1.790 

1,550

1,100

1,000

982

952

916

862

718

667

698

754

736

*667

744

814

814

696

768

706

672

762 

706

645

26,873

867

+71.9

Apr.

606

846

1,050

1,380

2,750

3,800

4,060

2,820 

2,160

2,200

2,700

2,950

3,350

3,280

3,560

5,570

5,820

5,540

5,190

4,470

3,140

3,630

4,190

*3,080

2,690

2,900

2,420

4,250

6.320

6,090

102,812

3,427

+587

May

3,270

3,890

6.340

5,550

4,510

3,220

2,510

2,160 

1,940

2,080

1,970

1,480

1,410

1,310

1,200

1,100

1,020

988

988

896

868

742

730

*724

672

612

612

902

772 949 580

55,995

1,806

-144

June

1,360

1,100

2,770

2,570

1,490

1,130

922

760 

662

591

786

692

556

525

501

396

348

378

318

290

338

334

277

243

259

225

225

*257

244 

232

20,779

693

+29.9

July

218

194

171

156

229

451

430

326 

318

345

160

185

298

624

654

572

484

376

315

361

283

261

446

440

412

376

290

242

188 

168

165

10,138

327

-33.0

Aug.

188

135

135

137

119

103

126

126 

119

108

111

127

102

184

146

*172

163

137

150

99

128

132

119

171

130

106

87

192

188 

237

Teo

4,337

140

-25.5

Sept.

146

138

388

362

235

279

478

193

162

177

162

137

147

151

141

185

620

494

378

366

296

301

222

1,240

976

532

388

312

333 

304

10,243

341

-11.3

Adjusted for diversion and change in reservoir contents

Mean 

Cfsm 

In.

4,920 

9.90 

11.41

3,041

e.i?

6 "3

Calendar year 1955: 

Water year 1955-56:

739 

1.49 

| 1.71

941 

1.89 

2.18

672 

1.35 

1.46

939

1.89 

2.18

4,014 

8.08 

9.01

1,663 

3.35 

3.86

Observed

Max 37,400 Min 79 Mean 1,628 

Max 24,300 Min 87 Mean 1,498

723 

1.45 

1.62

294 

0.592 

C.68

114 

0.229 

0.27

330 

0.664 

0.74

Adjusted

Mean 1,659 Cfsir 3.34 In. 45.30 

Mean 1,532 Cfsm 3.08 In. 41.95

* Discharge measurement made on this day.

t Diversion from rfestfield Little River and change in contents in Knightville, Borden Brook, and 

Cobble Mountain Reservoirs, equivalent in cubic feet per second, 

b Stage-discharge relation affected by ice.
CONNECTICUT RIVER BASIN 213

Connecticut River at Thompsonville, Conn.

Location.--Lat 41°59'14", long 72°36'2l", on right bank just upstream from Enfield Dam 

and 1 mile downstream from Thompsonville, Hartford County.

Drainage area.--9.661 so. mi.

Records available. July 1928 to September 1956.

Gage. Water-stage recorder on river and on canal of Connecticut Light & Power Cc. Datum 

of gage is 38.48 ft above mean sea level, datum of 1929.

Average discharge.--28 years, 16,640 cfs (adjusted for storage and diversion).

Extremes.--Maximum discharge during year, 110,000 cfs May 1 (gage height, 7.40 ft); minimum daily, 1,220 cfs Aug. 26.

1928-56: Maximum discharge, 282,000 cfs Mar. 20, 1936 (gage height, 16.6 ft, from 

floodmarks); minimum daily, 1,060 cfs Aug. 28, 1949, Sept. 27, 1953.

Remarks. Records excellent except those below 4,000 cfs and those for periods of ice 

effect or no gage-height record, which are good. Discharge includes water diverted 

around station by canal of Connecticut Light & Power Co. Plow regulated by powerplants, by diversion from Chicopee River basin, and by First Connecticut and Second 

Connecticut Lakes, Lake Francis, Comerford Station Pond and Moore Reservoir, Ouabbin 

Reservoir (see p. 230), and other reservoirs (combined usable capacity, about 93^ billion cubic feet).

Revisions (water years).--WSP 741: 1932. WSP 891: Drainage area.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6 

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

Z\

2?

24

25

26 

27

28

29

30

31

Total

Mean

(t)

Oct.

6,070

3.410

4,540

6,670

6,490

7,880 

17 , 40'0

20,300

13,900

12,200

11,300

9,340

9,560

10,500

41,400

86.100 

65,000

69,300

51,600

41 , 500

35,700

30,800

22,200

20,400

22,400

23,900 

22,400

21,500

18,700

15,300

38 , OOO

765,760

24,700

+1,216

Nov.

50,800

*38,900

34,400

32,100

51,900

58,500 

49,800

43,100

39,800

33,300

32,600

34,200

33,700

33,100

35,800

35,100 

36,600

34,400

30,900

27,700

23,400

22,000

21,300

19,800

17,100

17,600 

17,200

14,100

15,600

15,900

950,700

31,690

+416

Dec.

13,900

14,100

13,100

10,200

14,700

18.500

14^800

13,200

9,200

7,390

9,100

11,300

10,500

10,600

10,800 

9,180

6,980

7,520

9,400

a9,850

a8,670

a6,780

a5,290

a5,720

a5,610 

a6,310

8,460

8,160

8,150

5,910

310,680

10,020

-1,677

Jan.

5,570

5.840

4,820

7,220

7,040

6,420 

5,470

6,210

6,470

. 17,900

29,100

33,100

41,700

38,000

50,200

24,000 

20,500

18,800

15,900

14,600

12,100

9,280

9,990

11,800

11,800

11,100 

9,720

8,900

6,560

8,450

10,000

446,560

14,410

+674

Feb.

9,610

9,390

9,000

8,190

6,280

5,980 

9,370

9,990

10,700

10,200

9,780

10,400

11,200

11,500

11,000

*11,200 

10,600

9,200

5.590

7,850

11,200

8,890

7,340

9,410

8,800

9,800 

12,500

15,200

15,100

281,070

9,692

-1,300

Mar.

11,800

11 , 900

12 , 500

12,800

11,500

15,000 

16,600

25.500

17,900

14,700

11,900

12,000

12,700

13,400

13,700

b!4,000 

b9,630

7.890

b8,670

b 10, 400

13,200

11,800

12,500

12,000

9,400

10,300 

11,400

11,100

9,900

10,400

10,600

384,890

12,420

-1,278

Apr.

7,180

8,530

12,500

14,200

22,200

39,600 

54,400

55,700

48,100

40,600

41,000

43,500

49,900

55,800

53,800

57,500 

74,400

95,900

90 , 500

78,600

64 , 900

59,200

56,200

 51,700

48 , 200

46,300 

44,700

44,400

65,000

94.700

1,514,610

50,490

+6,273

May

108,000

97,300

84,900

78 , 300

74,500

69,500 

63,400

57,300

51,800

47,200

45,600

45,700

42,900

41,400

41,500

42,200 

41,700

59,100

33,500

29,500

25,300

22,000

*18,600

16,600

18,100

17,300 

16,900

21,600

36,900

41,500

35,400

* 1,403. 5

45,270

+1,504

June

28,000

26,300

34,000

47,900

46,800

36,300 

27,000

25,000

23,100

21,500

18,000

14,600

15,400

16,600

15,300

12,000 

8,170

7,750

7,410

8,440

7,950

7,200

4,710

2.000

3,390

6,080 

7,670

7,680

7,490

6,830

500,570

16,690

+252

July

2,520

5,500

5,650

2,690i

5,300

7,480 

6,820

2,590

4,720

9,750

10,300

10,900

9,550

11 , 000

15,000

17,200 

14,600

8,370

9,230

9,960

7,140

5,330

4,710

5,260

6,930

6,570 

7,390

6,630

3,650

5,410

5,540

227,270

7,531

-344

Aug.

5.540

4,750

4,290

2.E80

1,510

2,450 

5,510

3,550

3,?10

4,160

5.T40 i.eso

2,370

3,520

2,970

3,450 

5,650

2,810

1,620

2,280

*3,850

3,840

3,490

3,850

2,820

1,220 

2,280

5,060

5,220

3,730

4,740

100,200

3,232

-849

Sept.

7,600

6,160

5,060

7,060

8,880

9,910 

10,200

6,770

2,950

3,110

5,170

6,600

6,160

7,230

4,270

1.760 

4,810

9,750

11,300

10,100

10,200

9,920

6,730

7,420

16,500

18.400 

16,700

15,000

6,830

3,220

243,770

8,126

-230

Adjusted for change in reservoir contents and diversion

Mean 

Cf sm 

In.

25,920 

2.68 

3.09

32, 11C 

3.32 

3.73

Calendar year 1955: 

Water year 1955-56:

8,345 

0.864 

1.00

15,080 

1.56 

1.80

8,393 

0.869 

0.94

11,140 

1.15 

1.33

56,760 

5.88 

6.55

46,780 

4.84 

5.58

Observed

Max 127,000 Min 1,130 Mean 19,810 

Max 108,000 Mln 1,220 Mean 19,480

16,940 

1.75 

1.96

6,987 

0.723 

0.83

2,383 

0.247 

0.28

7",896 

0.817 

0.91

Adjusted

Mean 20,000 Cfsm 2.07 In. 28.10 

Mean 19,860 Cfsm 2.06 In. 27.98

de 

af 

second.

* Expressed in thousands.

a Ho gage-height record; discharge estimated 

and records for station at Montague Ciby, Mass

b Stage-discharge relation affected by ice.

basis of weather records, recorded range in stage,
214 CONNECTICUT RIVER BASIN

Scantic River at Broad Brook, Conn.

Location.~Lat 41°54'42", long 72°33'48", on left bank 300 ft upstream from bridge on 

State Highway 140, half a mile downstream from Broad Brook, 1 mile southwest of town 

of Broad Brook, Hartford County, and 8£ miles upstream from mouth.

Drainage area. 98.4 sq mi.

Records available. August 1928 to September 1956.

Gage. Water-stage recorder. Datum of gage is 26.23 ft above mean sea level, datum of 

1929.

Average discharge. 28 years, 144 cfs.

Extremes. Maximum discharge during year, 1,320 cfs Nov. 6 (gage heifht, 8.90 ft); minimum, 24 cfs Aug. 18 (gage height, 0.70 ft); minimum daily. 27 cfs Aug. 18.

1928-56: Maximum discharge, 13,300 cfs Aug. 19, 1955 (gage height, 19.9 ft, from 

floodmarks), from rating curve extended above 1,200 cfs on basis of computation of 

flow over dams, 7 and 9 miles above station, at gage heights 13.9 and 14.4 ft, adjusted 

for flow from intervening area on basis of computation of flow over dam on Broad Brook 

and by slope-area determination at peak flow at gage height 19.9 ft; minimum, 10 cfs 

Aug. 13, 14, 1944; minimum daily, 16 cfs Aug. 13, 1944.

Remarks. Records excellent. Flow regulated by mills and small reservoirs upstream. Records of water temperatures and suspended sediment loads for the water year 1956 are 

given In WSP 1450.

Revisions (water years). WSP 726: 1931. WSP 781: Drainage area. WSP 851: 1936(M). 

WSP 921: 1940! WSP.1201: 1929(M) , 1934(M) , 1938-39, 1948-49.

Rating tables, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

Oct. 17 to Sept. 30

1.8 

2.5 

3.0 

5.0 

7.0

110

198

264

475

779

0.7 24

1.5 105

2.5 200

3.5 320

5.0 475

7.0 779

9.0 1,360

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4 

5

6

7

e

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Cf sm

In.

Oct.

146

138

128

*115 

110

129

*224

266

295

247

197 

159

136

142

339

675

*817

660

540

423

358

307

265

248

274

280

266

233

21Z 

253

511

9,093

293

2.98

3.44

Nov.

759

*53E

370

398 

956

1.090

640

464

390

350

458 

550

499

464

464

464

453

410

350

320

304

299

276

270

258

246

*232

2Z5

218 

200

12,909

430

4.37

4.88

Dec.

190

184

182

206 

264

252

218

188

174

166

160 

157

152

144

145

148

138

138

138

122

121

124

123

122

124

127

121

123

12Z 

120

118

4,811

155

1.58

1.82

Jan.

117

115

114

111 

107

107

105

100

154

276

294

158

258

232

194

166

152

140

122

126

125

118

120

118

113

112

113

112

110 

135

182

4,606

149

1.51

1.74

Feb.

144

135

148

140 

126

123

215

264

232

200

186 

360

360

304

246

Mar.

145

T73

232

315 

330

288

450

524

475

360

294 

270

258

252

246

252 232

218

177

159

152

144

130

*122

119

238

390

340

232

177

6,033

208

2.11

2,28

175

184

193

176

181

186

206

232

192

196

198

194

193 

194

187

7,731

249

2.53

2.92

Apr.

189

239

320

400 

649

1.050

845

738

577

537

524 

537

487

453

420

453

499

499

400

340

304

276

264

288

288

258

252

239

246

350

12,901

430

4.37

4.88

Calendar year 1955: Max 7,770 Min 25 Mean 238

May

580

315

282

264 

259

212

206

200

175

175

186 

180

167

156

147

140

137

134

133

132

129

122

118

127

125

114

115

128

126 

117

116

5,297

171

1.74

2.01

June

124

135

515

560 

288

175

157

120

110

107

HZ 

110

103

*97

94

87

115

123

102

92

88

88

85

79

76

70

71

81

85

77

3,704

123

1.25

1.40

July

70

66

61

72 

80

95

103

99

92

72

89 

60

54

89

97

85

75

81

49

54

58

68

69

63

58

62

56

54

52 

47

46

2,176

70.2

0.713

0.82

Aug.

44

45

40

41 

40

40

45

58

37

37

37 

36

36

36

*52

51

29

27

28

29

35

40

42

41

40

55

55

57

52 

33

38

1,132

56.5

0.571

0.43

Sept.

38

40

47

46 

55

54

57

49

43

41

41 

41

38

47

38

42

45

49

45

48

*49

49

46

51

58

53

47

66

15 

60

1,416

47.2

0.480

0.54

Cfsm 2.42 In. 32.82

Water year 1955-56: Max 1,090 Min 27 Mean 196 Cfsm 1.99 In. 27.16

Peak discharge (base. 550 efs).--0ct. 17 (2 to 5 a.m.) 879 cfs (7.44 ft); Nov. 1 (1 p.m.) 869 cfs 

(7.40 ft); Nov. 6 (1 to 2 a.m.) 1,520 cfs (8.90 ft); Nov. 12 (7 to 9 p.m.) 591 cfs (5.90 ft); Mar. 8 

(10 to 11 p.m.) 577 Cfs (5.79 ft); Apr. 6 (Z to 4 p.m.) 1,060 cfs (8.15 ft).

* Discharge measurement made on this day.
CONNECTICUT RIVER BASIN 215

West Branch Farmington River near New Boston, Mass.

Location. Lat 42°04'45", long 73°04'24", on left bank 5 ft downstream from highway bridge, 

0.3 mile downstream from Clam River, and 1 mile south of New Boston, Berkshire County.

Drainage area. 92.0 sq mi.

Records available. May 1913 to September 1956. Prior to October 1948, published as 

Farmington River near New Boston.

Gage. Water-stage recorder. Datum of gage is 758.21 ft above mean sea level, datum of

"1929.

Average discharge. 43 years, 185 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 7,910 cfs Oct. 16 (gage height, 9.35 ft); minimum daily, 4.6 cfs Aug. 28.

1913-56: Maximum discharge, 34,300 cfs Aug. 19, 1955 (gage height, 14.06 ft), "from 

rating curve extended above 9,600 cfs on basis of slope-area determination cf peak 

flow; minimum daily, 3.2 cfs Sept. 12, 1953.

Remarks. Records good except those below 30 cfs and those for periods of ice effect, 

which are fair. Plow regulated by Otis Reservoir (see p. 230).

Revisions (water years). WSP 641: 1924(M). WSP 756: Drainage area. WSP781: 1928(M). 

WSP 1231:T514T

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1 to Sept. 30

2.7 

3.0 

3.5 

4.0 

4.5

192

315

467

5.0 

6.0 

7.0 

8.0 

9.0

690

1,270

2,240

3,800

6,660

2.0

2.1

2.2 

2.5 32

64

112

197

318

467

690

1,270

2,240

Discharge, in cubic feeb per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Tjtal

Mean

(t)

Oct.

108

84

73

66

J59

215

420

»406

335

235

179

*143

124

229

*3,280

5,400

*2,440

1,390

1,240

914

698

564

480

464

590

481

*437

408

387 

723

1 ,420

23,992

774

+36.9

Nov.

720

528

450

1,120

1.750

1,100

815

690

553

489

585

640

590

782

685

635

625

503

444

408

384

358

342

300

208

188

172

172

142 

139

16,497

550

-8.68

Dec.

129

125

123

212

249

*181

142

135

125

110

115

101

100

98

89

96

116

103

92

74

58

56

55

68

90

80

65

57

52 

54

54

3,210

104

+18.2

Jan.

52

60

82

82

80

*95

105

100

350

550

480

500

480

353

290

256

234

213

206

186

170

160

150

145

140

135

150

181

181 

195

199

6,560

212

-40.0

Feb.

186

179

181

181

176

174

181

181

179

181

181

204

204

*190

192

197

186

188

183

176

172

165

165

165

210

337

283

254

230

5,681

196

-86.5

Mar.

215

208

215

242

225

211

316

296

256

232

227

261

237

230

220

*180

200

200

195

195

190

190

197

197

190

185

179

170

170

176

170

6,575

212

-62.2

Apr.

167

183

234

296

490

576

605

460

424

431

467

515

572

615

665

1,260

1,420

1,080

*885

690

635

760

750

620

610

595

615

1,230

2,070 

2,110

22,030

734

+16.8

May

1,100

795

785

685

605

528

481

428

393

507

457

412

390

367

348

332

313

316

313

308

286

276

286

283

256

*244

266

268

242 

227

232

12,729

411

-31.3

June

254

270

456

348

288

254

230

206

188

183

183

135

107

86

70

56

45

36

32

30

27

26

24

22

20

18

*18

20

15 

15

3,662

122

-42.2

July

12

10

9.0

8.5

49

118

67

40

39

30

24

21

29

129

81

58

44

33

27

26

29

44

35

26

22

20

18

15

14 

12

11

1,100.5

35.5

-2.24

ALg.

11

*9.9

9.4

9.0

9.0

8.5

8.5

7.1

6.7

9.9

22

11

9.4

12

9.4

7.6

6.7

6.0

15

9.4

8.5

9.9

8.0

7.1

6.3

5.6

4.9

4.6

*8.0 

16

18

294.4

9.50

+3.55

Sept.

18

26

43

22

13

13

42

24

18

15

13

15

15

15

16

30

46

63

36

36

40

28

26

112

92

59

39

40

49

65

1,069

35.6

+3.20

Adjusted for change in reservoir contents

Mean 

Cf sir,

en

8.82

10.16

54] 

5.8E 

6.5

'"alendar year 1955: 

Hater year 1955-56:

122 

S 1.33 

1.53

172 

1.87 

2.15

109 

1.18 

1.28

150 

1.63 

1.88

751 

8.16 

9.11

379 

4.12 

4.75

Observed

Max 16,100 Min 5.0 Mean 307 

Max 5,400 Min 4.6 Mean 283

79.9 

0.868 

0.97

33.3 

0.362 

0.42

13.0

0.141 

0.16

38.8

0.422 

0.47

Adjusted

Mean 314 Cfsm 3.41 In. 46.34 

Mean 267 Cfsm 2.90 In. 39.44

Peak discharge (base, 1,400 efs).--Qet. 16 (7:30 a.m. 

2,490 cfs (7.21 ft): Nov. 4 (9 p.m.) 2,000 cfs (6.78 ft 

Apr. 29 (12:30 a.m.) 3,090 cfs (7.62 ft).

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Otis Res

Nqte.--Stage-discharge relation affected by ice Dec. 11, 13, Dec. 20 t 

27, Feb. 22-25, 29, Mar. 1, 16-22, 25, 26, 28, 29.

7,910 cfs (9.35 ft); Oct. 30 (12 p.m.) 

Apr. 16 (7 p.m.) 1,750 cfs (6.53 ft);
216 CONNECTICUT RIVER BASIN

West Branch Farmington River above Still River, at Riverton, Conn.

Location. Lat 41°57'46", long 73°01'05", on right bank at downstream side of bridge on 

State Highway 20 at Riverton, Litchfield County, 0.3 mile upstream from Still River, 

0.7 mile upstream from former gage site, and at mile 52.0.

Drainage area. 130 sq mi.

Records available . August 1955 to September 1956.

Gage. Nonrecording gage read twice daily. Datum of gage is 485.60 ft above mean sea 

level, datum of 1929.

Extremes.--Maximum discharge observed during period Aug. 30, 1955, to Sept. 30, 1956, 10,600 

cfs Oct. 16 (gage height, 12.47 ft); minimum observed, 31 cfs Aug. 10 (gage height, 

2.43 ft).

Flood of Aug. 19, 1955, reached a stage of 21.1 ft, from floodmarks (discharge, 

57,200 cfs, from computation of peak flow at slope-area reach 1.5 miles upstream).

Remarks. Records good except those for periods of ice effect or missing or doubtful gage 

readings, which are fair. Flow regulated by Otis Reservoir (see p. 230).

Rating tables, Aug. 30, 1955, to Sept. 30, 1956, except periods of Ice 

effect (gage height, In feet, and discharge, In cubic feet per second) 

(Shifting-control method used Sept. 20-23, 1955)

Aug. 30 to Oct. 15, 1955

3.0 

3.5 

4.0 

5.0

32

116

225

570

6.0

7.0

10.0

Oct. 16, 1955, to Sept. 30, 1956

1,100

1,850

5,480

2.4 

3.0 

3.5

29

85

158

287

690

6.0

8.0

10.0

12.0

1,270

3,000

5,500

9,300

Discharge, In cubic feet per second, 1955

Day

1 

2

3

4

5

6

7 

8

(t)..

Aug.

:--_-*

Sept.

205 

177

195

d268

286

283

*295 

280

Day

9 

10

11

12

13

14

15 

16

Aug.

-

-

-

-

-

-

Sept.

256 

250

265

(1135

120

91

84

71

Day

17 

18

19

20

21

22

23 

24

Aug.

:

;57,200

-

-

-

-

Sept.

62 

52

d69

98

42

43

56 

g220

Day

25 

26

27

28

29

30

31

Aug.

;

-

-

_

253

245

-

Sept.

g240 

118

dill

220

200

159

165

-57.1

Adjusted for change In reservoir contents

Runoff In Inche i. ...............

^

-

108

0.93

* Dist3har£e measurement made on this day.

t Change In contents, equivalent In cubic feet per second, in Otls Reservoir.

* Result of slope-area determination of peak flow.

d Doubtful gage-height record; discharge computed from adjusted readings.

g Prom graph based on gage readings.
CONNECTICUT RIVER BASIN

West Branch Farmington River above Still River, at Riverton, Conn. Continued

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

25

26

27

28

?9 

30

31

Total

Mean

(t)

Oct.

155

127

105

*100

87

g200

760

735

710

g570

124

200

177

200

*g4,550

g7,510 

g3,290

g2,060

1,680

1,240

920

740

665

572 

840

640

595

505

449

gl,000

g2,180

33,486

1,080

+36.9

Nov.

1,010

790

640

gl,750

1,520

1,100

920

740

690

gl,090

890

840

g920

*950

890 

890

665

595

528

505

433

397

334

304

256

233

227

201

168

23,826

794

-8.7

Dec.

147

140

168

244

541

294

b!80

b!50

b!30

b!25

b!20

bl!5

bllO

109

116

100 

93

92

blOO

b80

b70

b65

b65

b70 

b95

b90

b80

b75

b65

b65

b62

3,756

121

+18.2

Jan.

b60

b60

b65

b70

*b!50

b!40

b!35

b!30

bg750

gl.060

740

890

a 700

aSOO

a350

*287 

262

211

180

b!90

b!80

b!70

b!60

154 

166

158

158

b!75

b!95

b210

b215

8,871

286

-40.0

Feb.

b210

206

b200

b!95

b!90

b!90

b!90

b!85

b!80

180

178

b200

b200

b!95

194

185 

192

196

187

170

162

b!70

b!70

b!65 

g275

g485

348

275

244

6,117

211

-86.5

Mar.

227

233

236

250

256

294

465

ITT

307

272

253

310

268

262

244

b210 

b215

b220

b210

1)215

187

b210

b205

b210 

b205

204

196

183

174

199

7,537

243

-62.2

Apr.

192

g227

300

*g390

g820

950

gl,010

765

665

g690

765

840

g890

gl,000

gl,070

g2,120 

2,100

1,520

1,300

1,070

815

765

a950

a980 

865

890

865

gl,250

g2,600 

g5,140

31,804

1,060

+16.8

May

1,600

1,160

1,160

980

840

765

690

595

550

690

640

572

528

485

441

425 

404

411

404

394

355

341

330

348 

304

287

320

341

294 

275 O'Ql

L.Q±.

17,210

555

-31.3

June

390

397

g8O5

595

411

341

300

265

217

233

253

*185

151

127

110

95 

82

72

62

58

55

58

52

50 

49

43

43

47

42

39.

5,627

188

-42.2

July

39

37

34

35

g47

g!78

dllO

74

97

70

50

46

g52

g!78

129

90 

78

64

50

42

49

76

62

52 

45

*42

39

39

36 

35

35

2,010

64.8

-2.2

Aug.

35

34

34

33

32

32

32

32

32

31

45

35

35

38

34

39 

37

35

39

41

40

40

40

39 

37

37

36

37

38 

40

42

1,131

36.5

+ 3.5

Sept.

43

57

72

49

42

42

64

54

49

41

40

39

39

39

39

40 

70

86

62

52

64

60

50

grff

85

62

60

63 

86

1,799

60.0

+3.2

Adjusted for change in reservoir contents

Mean 

Cf sm 

In.

1,117 

8.59 

9.90

78 

6.0' 

6.7^

Calendar year 1955: 

Water year 1955-56:

3 139 

t 1.07 

t 1.23

246 

1.89 

2.18

125 

0.962

1.04

181 

1.39 

1.60

1,077 

8.28 

9.24

524 

4.03 

4.65

Observed

Max - Min - Mean - 

Max 7,310 Min 31 Mean 391

146 

1.12 

1.25

62.6 

0.482 

0.56

40.0 

0.308

0.36

63.2 

0 . 486 

0.54

Adjusted

Mean - Cfsm - In. 

Mean 375 Cfsm 2.88 m. 39.29

_ -- ..__..._-..- (base, 1.800U cfs).--0et. cfs).--Oct. 16 (B-.zs a.m.) iu,buu crs (,±z.*' rt;; uct. 01 \a a.m.;

3,100 cfs (8.1 ft ; Nov. 5 (3 a.m.) 5,200 cfs (9.8 ft); Jan. 9 (11 p.m.) 1,800 cfs (6.7 ft); Apr. 16

- ' -- _ \ A nnn ~*»« to a *»+- \

Peak discharge

_,100 cfs (8.1 ft); Nov. b 13 a.m.; b.zuu cfs ta.ti rt;; Jan. a (.1 

(8 p.m.) 3,000 cfs (8.0 ft); Apr. 30 (5 a.m.) 4,000 cfs (8.9 ft).

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per s

a No gage-height record; discharge estimated on basi

b Stage-discharge relation affected by ice.

d Doubtful gage-height record; discharge computed from adjusted readings.

g Prom graph based on gage readings.

.-. ___ond, in Otis Reservoir, 

basis of records for station at New Boston, Mass.
218 CONNECTICUT RIVER BASIN

Still River at Robertsville, Conn.

Location. Lat 41°58'04", long 73°02'OCJ ", on left bank 1,500 ft downstream from Sandy 

 Brook, 1 mile southeast of Robertsville, Litchfield County, 1 mile northwest of Riverton, and 1 mile upstream from mouth.

Drainage area. 84.4 sq mi.

Records available. July 1948 to September 1956.

Gage. Water-stage recorder. Datum of gage is 510.24 ft above mean sea level, datum of 

1929.

Average discharge.--8 years, 203 cfs.

Extremes.--Maximum discharge during year, 9,270 cfs Oct. 16 (gage height, 10.02 ft); minimum, 4.0 cfs Aug. 6, 8, 10; minimum daily, 4.3 cfs Aug. 5; minimum gage height, 1.27 ft 

Aug .6,8.

1948-56: Maximum discharge, 44,000 cfs Aug. 19, 1955 (gage height, 16.48 ft, from 

floodmark), from rating curve extended above 5,600 cfs on basis of slope-area determination of peak flow; minimum, that of Aug. 6, 8, 10, 1956; minimum daily, that of 

Aug. 5, 1956; minimum gage height, 0.29 ft Aug. 8, 1955.

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are poor. Ordinary flow regulated "by powerplant above station.

Rating tables, water year 1955-56, except periods of ice effec 

height, in feet, and discharge, in cubic feet per second) 

(Shifting-control method used Aug. 8 to Sept. 30)

Oct. 1 to Nov. 4 Nov. 5 to Sept. 30

1.9

2.0 

2.5 

3.0

4.0

144

246

581

5.0 1,130

6.0 1,960

7.0 3,250

10.0 9,220

64

132

3.0 252

4.0 620

5.0 1,200

6.0 2,080

7.0 3,270

Discharge, in cubic feet per se:ond, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13-

14

15

16

17

18 

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Oct .

159

99

85

*85

61

212

*486

400

333

229

173

144

128

217

*4,180

6.741)

3,040

1,270 

914

694

527

449

382

356

428

365

324

c'b4

224

654

,

25,782

832

9.86

11.37

tlov.

796

534

428

1,150

2,460

1,210

770

600

500

436

722

670

556

860

*620

600

616

484 

413

378

343

285

238

246

232

211

191

188

170

±3(J

17,057

569

6.74

7.52

De?.

152

193

186

264

552

258

203

181

154

144

136

130

117

95

99

76

85

87 

110

87

72

67

67

64

68

70

67

64

61

59 

59

3,807

123

1.46

i.ee

Jan.

54

48

59

49

*46

44

38

29

500

450

290

310

308

211

170

148

132

113 

113

106

87

85

87

85

79

60

63

50

44

p 8

3,813

123

1.4C

1.68

Feb.

72

61

65

47

41

59

75

81

*76

82

74

12c

150

124

124

123

104

84 

73

83

73

65

80

75

103

191

191

167

122

2,789

96.2

1.14

1.23

Mar.

98

95

109

156

148

132

273

261

203

163

128

170

154

148

144

124

130

125 

120

115

115

120

130

140

115

125

1?5

135

136

119 

108

4,344

140

1.66

1.91

Apr.

Ill

154

214

282

582

725

770

493

488

*565

620

723

795

867

940

1,790

1,840

910

720

620

695

770

645

576

584

544

760

1,430

1,800

23,143

771

9.14

10.20

May

885

596

612

520

436

413

368

326

318

329

312

298

264

230

188

172

161

124

111

115

104

100

100

92

74

72

111

95 

64

92

7,845

253

3.00

3.46

June

174

196

442

343

211

124

124

104

74

64

108

*95

84

70

58

42

26

37

39

37

39

28

19

36

31

37

39

33

IS

2,796

93.2

1.10

1.23

July

10

9.0

7.7

K.B

57

124

75

a42

a50

a45

a4£

a38

41

123

84

67

54

37

34

22

46

50

40

55

*31

32

21

11 

24

24

1,306.5

42.1

0.493

0.38

Aug.

22

21

20

12

4.5

19

19

18

ie

18

15

5.9

22

26

24

22

. 22

9.8

24

28

26

25

23

16

6.5

20

20

25 

34

605 . 5

19.5

0.231

0.27

Sept.

15

16

27

39

36

56

60

55

19

29

27

27

26

24

17

17

39 

50

38

36

38

32

19

79

58

42

47

55

47

J

1,066

35.5

0.421

0.47

Calendar year 1955: Max 24,800 Min 5.6 Mean 537 Cfsm 3.99 In. 54.15

Water year 1955-56: Max 6,740 Min 4.3 Mean 238 Cfsm 5.06 In. 41.60

Peak discharge (base, 1,300 cfs). --Oct. 16 (8 a.m.) 9,270 cfs (10.02 ft); Oct. 31 (2 to 3 a.m.)

3,420 cfs (7.11 ft); Nov. 5 (4:30 a.m.) 3,200 cfs (6.93 ft); Apr. 17 (9 to 11 p.m.) 2,460 cfs (6.33

ft); Apr. 29 (3 to 4 a.m.) 1,880 cfs (5.79 ft); Apr. 30 (4 to 5 a.m.) 2,360 cfs (6.25 ft).

* Discharge measurement made on bhis day.

a No gage-height record; discharge estimated on basis of records for nearby stations.

Note. Stage-discharge relation affected by ice Dec. 17-31, Jan. 1-12, 22, 24, 25, Feb. 4, 5, 22-

24, 29, Mar. 1, 17-27.
CONNECTICUT RIVER BASIN 219

Burlington Brook near Burlington, Conn.

Location. Lat 41 "47"10", long 72°57'55", on left bank l£ miles north of Burlington. Hartford County, 3 miles upstream from mouth, and 3 miles southwest of Collinsville.

Drainage area.--4.12 sq mi.

Records available.--September 1931 to September 1956.

Gage.--Water-stage recorder and sharp-edged square orifice and rectangular we.ir. Datum of 

gage is 714.00 ft above mean sea level, datum of 1929.

Average discharge. 25 years, 8.32 cfs.

Extremes. --Maximum discharge during 'year, 475 cfs Oct. 16 (gage height, 6.24 ft); minimum, 

0.30 cfs (regulated) June 22 (gage height; 0.30 ft); minimum daily, 0.93 cfs Aug. 18-20.

1931-56: Maximum discharge, 1,690 cfs Aug. 19, 1955 (gage height, 9.22 ft), from 

rating curve extended above 100 cfs on basis of one current-meter measurement and form 

of theoretical rating; minimum, 0.13 cfs (regulated) June 21, 1933; minimum daily, 

0.64 cfs Sept. 23, 24, 27-29, 1941, Aug. 27, 28, 1949; minimum gage height, 0.03 ft. 

Oct. 11, 13, 1943 (orifice plate removed).

Remarks.--Records excellent except those for periods of ice effect or no gage-height record, which are good. Infrequent low-water regulation.

Revisions ('water years) . WSP 1171: Drainage area. WSP 1301: 1933-45(M).

Rating table, water year 1955-56, except periods of ice effect (gage

height, in feet, and discharge, In cubic feet per second)

(Backwater during weir repairs June 22-25)

.7

1.0

1.1

0.30

.81

1.85

3.11

4.55

1.3 

1.6 

2.0 

3.0 

5.0

10.3

23.7

46.5

123

324

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

6.03

4.55

3.92

3.57

3.57

12.3

24.6

13.4

10.3

7.41

6.03

5.52

5.02

12.8

254

295

84

41.5

35.7

27.4

*21.7

18.7

16.4

13.4

16.9

14.2

13.0

12 . 2

12! 2

49.3

119

1A6G.63

37. G

9.13

10.53

Nov.

30.1

21.2

18.2

70

200

38.0

25.8

23.2

19.2

17.4

59

23.7

18.7

35.2

22.7

30.0

26.9

17.8

16.4

15.6

14.6

13.8

13.0

14.6

13.0

11.5

11.. 1

11.1

9.93

*1_._27

851.00

28.4

6.89

7.69

Dec.

8.95

8.63

9.27

14.2

15.6

11.1

8.95

8.32

8.32

.8.00

7.41

7.13

6.85

6.57

6.85

6.57

, 6.03

5.77

6.03

bS.5

b5.3

bS.l

5.02

5.02

5.26

5.26

4.55

4.13

b4.1

4.13

3.93

217.85

7.03

1.71

1.97

Jan.

3.93

3.93

3.93

3.93

4.13

4.13

3.93

3.74

15.0

21.7

14.2

20.2

17.8

10.3

8.00

7.13

6.85

6.03

5.77

5.52

5.02

4.55

b4.3

b4.1

b3.9

b3.7

b3.6

b3.4

b374"

b5.6

b7.4

219.12

7.07

1.72

1.98

Feb.

b5.3

5.52

7.13

b5.8

5.26

*5.02

7.13

7.71

7.13

7.71

7.71

18.7

13.8

9.60

10.7

11.1

7.71

7.41

6.57

6.30

5.77

5.02

b4.5

b3.9

11.5

15.1

8.63

-8.00

6.57

232.30

8.01

1.94

2.09

Mar.

b5.8

6.57

11.9

15.1

11.9

10.7

19.2

20.2

15.6

10.7

10.7

15.6

10.3

9.60

8.95

b7.5

b7.0

b8.5

8.00

7.71

7.41

8.32

9.60

9.93

b8.3

7.71

8.00

8.63

8.63

8.00

7.71

313.77

10.1

2.45

2.82

Apr.

8.32

10.7

21.2

25.3

46.2

54

45.3

22.2

22.7

31.9

*39.1

40.9

40.9

40.3

39.1

83

B?

31.8

27.9

21.2

19.2

17.8

21.2

20.7

15.6

15.6

14.6

13.4

19.7

39.9

901.72

30.1

7.31

8.16

May

19.2

15.1

24.2

16.0

13.4

12.6

15.1

12.2

10.7

12.2

10.7

9.93

9.60

8.95

8.95

"*8.00

7.41

8.63

8.32

8.63

7.13

6.57

8.00

7.71

6.57

5.77

7.13

7.71

6.30

5.77

5 77

314.25

10.1

5.45

2.82

June

12.2

12.6

34.3

1472

9.60

8.00

6.57

5.77

5.26

5.77

7.13

5.02

4.13

3.42

3.18

3.07

3.24

2.80

2.62

2.58

2.80

1.94

1.50

2733"

2.29

1.97

4.87

5.77

3.11

2. SB

180.62

6.02

1.46

1.63

July

2.37

2. £5

2.05

1.93

8.61

16.9

"TTfl

4.13

6.30

4.55

3.33

2.58

3.06

5.77

3.42

2.97

2.62

2.13

*1.80

1.93

3.58

5.02

3.21

z'.zs

1.93

1.94

1.70

1.58

1.54

1.44

113.35

3.66

0.880

1.01

Aug.

1.40

1.37

1.39

1.16

1.26

1.40

1.47

1.29

1.19

1.24

1.02

1.16

1.19

1.33

1.09

1.02

1.06

.93

793

.93

£.16

1 . 62

1.23

1.33

1.13

1.71

1.23

1.13

1.09

1.13

1.33

38.92

1.26

0.306

0.35

Sept.

1.40

1.40

1.47

1.09

1.02

1.58

2.97

1.47

1.19

1.09

1.06

1.06

1.02

.99

1.02

al.3

al.7

a2.0

1.44

1.66

1.40

1.29

1.29

3.08

T774

1.37

*1.26

2.59

1.77

1.44

45.16

1.51

0.367

0.41

Calendar year 1955: Max 673 Min 0.69 Mean 14.4 Cfsm 3.50 In. 47.50

Water year 1955-56: Max 295 Min 0.93 Mean 12.6 Cfsm 3.06 In. 41.46

discharge (base. 140 cfs). Oct. 16 (7 a. 

(5.42 ft); Nov. 5 (4:30 a.m.) 199_cfs (3.81 ft).

* Discharge measurement made on'this day.

a No gage-height record; discharge estimated or 

riiver at Thomaston.

b Stage-discharge relation affected by Ice.

475 cfs (6.24 ft); Oct. 31 (1 a.m.) 372 cfs

Uaugatuck
220 CONNECTICUT RIVER BASIN

Pequabuck River at Forestville, Conn.

Location. Lat 41°40'23", long 72°54'04", on left bank 700 ft upstream from station of 

Hew York, New Haven and Hartford Railroad at Forestville, Hartford County, a quarter 

of a mile downstream from Copper Mine Brook", and 65 miles upstream from mouth.

Drainage area.--45.2 sq mi.

Records available.--July 1941 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 197.72 ft above mean sea level, datum of 

L929 (levels by Connecticut State Water Commission).

Average discharge. 15 years, 89.6 cfs (adjusted for storage and diversion).

Extremes. Maximum discharge during year, 4,170 cfs Oct. 16 (gage height, 7.67 ft, from 

floodmarks); minimum, 20 cfs Aug. 20, Sept. 2, 15 (gage height, 0.93 ft).

1941-56: Maximum discharge, 11,700-cfs Aug. 19, 1955 (gage height, 13.22 ft, from 

high-water mark in gage hoase), from rating curve extended above 2,100 cfs on basis 

of slope-area determinations at gage heights 7.3 and 13.22 ft; minimum, 6.5 cfs 

Sept. 21, 22, 1941 (gage height, 0.64 ft)

Flood in September 1938 reached a stage of about 7.3 ft, from flood-narks (discharge, 

3,800 cfs, on basis of slope-area determination of peak flow and computation of peak 

flow over dam).

Remarks. Records good except those for periods of fragmentary gage-height record, which 

are fair. Flow regulated by Whigville Reservoir (see p. 231) and mills above station. 

Diversion for municipal water supply of city of New Britain from Copper Mine Brook.

Revisions (water years).--WSP 971: 1941-42. WSP 1111: 1947.

Discharge, in cubic feet per second, /rater year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

OCt.

56

49

47

45

44

90

f!93

93

77

65

59

55

50

f228

*fZ,050

fS.OSO

fl.010

568

409

285

225

184

158

158

154

134

117

107

103 

f570

f 1,090

11,523

372 

+7.5

Nov.

404

239

207

f840

f 1.510

524

342

291

247

*221

465

287

228

402

275

346

320

224

200

197

184

177

 161

144

125

115

107

107

105 

100

9,094

303 

-1-7.6

Dec.

96

89

91

120

125

100

85

81

79

75

69

69

66

64

66

64

58

56

58

50

50

50

50

50

53

50

47

46

46 

46

43

2,092

67.5 

+6.8

Jan.

42

39

43

46

49

46

43

40

201

T52

105

144

112

79

66

63

61

55

53

53

50

49

50

49

47

46

45

43

42

111

83

2,107

68.0 

+7.3

Feb.

64

113

94

61

69

*59

168

115

98

98

105

224

130

100

98

100

77

89

98

94

81

64

56

53

178

124

83

87

66

2,846

98.1 

+8.6

Mar.

61

75

94

125

100

105

219

224

167

130

125

138

112

112

112

94

96

87

83

91

87

96

107

117

94

94

98

105

110

107

98

3,463

112 

+7.7

Apr.

115

T50

235

251

421

446

400

279

247

315

*324

287

271

239

247

504

415

262

226

193

176

164

190

176

151

154

148

137

204 

289

7,616

254 

+7.7

May

173

146

215 160"

134

121

146

121

104

108

97

90

86

81

86

*83

77

83

81

83

73

68

71

71

64

57

66

70

62

55

83

3,013

97.2 

+ 7.5

June

132

129

373

T70

108

90

75

64

58

58

66

58

52

46

46

58

43

43

42

40

43

45

39

36

39

34

64

55

39

33

2,178

72.6 

+6.7

July

29

30

29

28

142

150

73

50

68

50

39

40

40

50

39

39

36

33

*30

29

50

46

38

34

31

29

29

27

25

26

26

1,385

44.7 

+7.6

Aug.

26

25

24

23

22

24

25

24

25

24

22

22

23

24

23

23

23

22

21

22

30

24

23

23

22

21

22

22

22

22

22

720

23.2

+6.7

Sept.

22

27

24

22

22

29

42

24

22

22

22

22

22

22

26

28

29

28

24

29

24

23

23

36

26

25

24

45

25

22

781

26.0 

+6.7

Adjusted for change in reservoir contents

Mean 

Cf sm 

In.

380 

8.41 

9.70

311 

6.88 

7.68

Calendar year 1955: 

Water year 1955-56:

74.3 

1.64 

1.89

75.3 

1.67 

1.92

107 

2.37 

2.56

120 

2.65 

3.06

262 

5.80 

6.47

105 

2.32 

2.68

Observed

Max 6,500 Min 19 Mean 149 

Max 3,050 Min 21 Mean 128

79.3 

1.75 

1.95

52. 3 

1.16 

1.34

29.9 

0.662 

0.76

32.7 

0.723 

0.81

Adjusted

Mean 156 Cfsm 3.45 In. 46.96 

Mean 135 Cfsm 2.99 In. 40.82

Peak discharge (base. 660 cfs). Oct. 16 (about 7 a.m.) 4.170 cfs (7.67 ft); Oct. 30 (abouo ^ 

p.m.) about 2,040 cfs (about 5.2 ft); Nov. 5 (about 2 a.m.) 2,500 cfs (5.8 ft); Apr. 5 (8 p.m.) 665 

cfs (2.87 ft).

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Whigville Reservoir, diversion for 

municipal supply of city of New Britain from Whigville Reservoir, and at Whites Bridge pumping plant.

f Fragmentary gage-height record; discharge computed from partly estimated gage heights.
CONNECTICUT RIVER BASIN

Salmon Brook near Granby, Conn.

Location.--Lat 41°56'14", long 72°46>36", on left bank 50 ft upstream from Ne"? York, New 

Haven and Hartford Railroad bridge, 0.5 mile downstream from confluence of East Branch 

and West Branch, 1.2 miles southeast of Granby, Hartford Coonty, and 1.9 miles upstream 

from mouth.

Drainage area. 66.8 sq mi (revised).

Records available.--July 1946 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 147.54 ft above mean sea level, datum of

Average discharge.--10 years, 141 cfs.

Extremes.--Maximum discharge during year, 10,800 cfs Oct. 16 (gage height, 12.18 ft); minimum, 22 cfs Aug. 17, 28-30 (gage height, 1.95 ft).

1946-56: Maximum discharge, about 40,000 cfs Aug. 19, 1955, from a comparison of 

unit runoff of tributary and nearby streams; maximum gage height, 23.58 ft Aug. 19, 

1955 (prior to destruction of railroad bridge); minimum discharge, 10 cfs Aug 26 

1949 (gage height, 1.42 ft).

Remarks.--Records good. Infrequent regulation at low flow.

Rating tables, water year 1955-56 (gage height, In feet, and discharge, In c-iblc

feet per second)

(Shifting-control method used Oct. 13, 14, Jan. 9 to Apr. 5; backwater 

from debris on control Dec. 28-30)

Oct. 1-13 Oct. 13 to Apr. 5 Apr. 5 to Sept. 30

4.3 84

162

244

2.8 

3.0 

3.5 

4.0

49

63

107

167

5.0 

6.0 

7.0 

8.0

353

660

1,190

2,090

9.0

10.0

11.0

3,320

5,000

7,300

1.9

2.0 

2.5 

3.0

4.0 305

5.0 580

6.0 960

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12*

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

Cfsm

In.

Oct.

110

101

91

87

84

124

238

180

157

131

118

106

97

111

5,760

*7,210

4,010

1,320

918

700

585

506

382

337

339

291

254

*223

207

452 

2,290

27,519

888

13.3

15.33

Nov.

691

470

377

794

2,580

835

585

456

402

342

629

515

428

*610

515

500

500

402

342

319

287

258

234

227

211

196

*182

176

164

153

14,180

473

7.08

7.90

Dec.

146

141

141

174

257

188

150

140

130

124

117

115

109

105

105

99

95

93

92

78

75

75

75

75

78

78

68

62

60

57

56_

3,338

108

1.62

1.87

Jan.

55

50

52

55

67

69

67

66

120

230

174

202

218

182

145

128

119

109

100

*102

95

92

92

86

85

82

81

79

77

89

105

3,263

105

1.57

1.81

Feb.

86

84

85

79

81

77

95

112

112

111

109

208

202

163

146

126

99

97

92

87

80

65

69

67

80

129

110

105

81

3,037

105

1.57

1.69

Mar.

75

80

109

143

129

118

243

358

ITS

144

129

130

117

112

107

97

94

98

94

92

90

94

105

107

95

94

94

96

100

95 

92

3,609

116

1.74

2.01

Apr.

101

126

173

224

583

766

760

445

405

*474

520

505

505

490

460

840

680

460

392

330

318

295

342

330

288

268

251

258

368

548

12,505

417

6.24

6.96

May

342

25^

295

241

209

189

181

161

148

161

141

137

132

124

117

114

108

114

111

103

96

92

91

93

85

83

87

95

84

80 

87

4,356

141

2.11

2.43

June

189

209

505

305

191

139

114

99

90

88

97

81

71

*65

59

59

57

57

59

59

59

61

57

55

52

50

51

59

52

4_9_

3,138

105

1.57

1.75

July

47

46

45

43

51

97

74

57

67

61

50

48

43

67

61

49

48

42

40

37

43

65

55

48

43

40

37

36

34

32 

32

1,538

49.6

0.743

0.86

Aug.

31

30

30

28

28

28

28

27

*25

24

24

23

23

25

24

23

22

23

23

23

27

28

26

25

24

23

23

22

22

22 

24

778

25.1

0.376

0.43

Sept.

24

24

24

23

23

24

79

42

33

30

28

26

28

26

26

30

33

36

31

31

*31

33

32

45

46

38

35

40

42

36

993

33.3

0.499

0.56

Calendar year 1955 : Max 18,400 Mln 16 Mean 299 Cfsm 4.48 In. 60.65

Water yearl955-56 year 1955-56 : Max 7,210J Mln 22 Mean 214 Cfsm 3.20 In. 43.60

Peak discharge (base. 1.000 cfs). Oct. 16 (10:50 a.m.) 10.800 efs (12.18 ft); Oct. 51 (5 a.m.) 

4,020 cfs (9.46 ft); Nov. 5 (7 a.m.) 3,540 cfs (9.15 ft); Apr. 5 (9 p.m.) 1.200 cfs (6.48 ft); 

Apr. 5 (9 p.m.) 1,200 cfs (6.48 ft); Apr. 16 (9:30 p.m.) 1,100 cfs (6.31 ft).

* Discharge measurement made on this day.
222 CONNECTICUT RIVER BASIN

rarmington River at Rainbow, Conn.

Location.--Lat 41°54'4l", long 72°41'16" , on left bank at Rainbow, Hartford County, 300 ft 

from Stevens Paper Mill, 0.4 mile downstream from Farmington River Power Co. dam, 

1.3 miles upstream from Poquonock, 6.4 miles downstream from Salmon Brcok, and 8 miles 

upstream from mouth.

Drainage area.--591 sq mi (revised); at former site at Tariffville, 578 sq mi (revised).

Records available. August 19S6 to September 1956. Prior to 1940, published as "at 

Tariffville."

Gage. Water-stage recorder. Datum of gage is 35.36 ft above mean sea level, datum of 

1929. Prior to July 1, 1939, at site 5| miles upstream at datum 94.85 ft higher.

Average discharge.--28 years (1928-56), 1,099 cfs (adjusted to present site; adjusted for 

storage and diversion).

Extremes.--Maximum discharge during year, 34,700 cfs Oct. 16 (gage height, 16.35 ft); minimum daily, 124 cfs Sept. 16.

1928-56: Maximum discharge, 69,200 cfs Aug. 19, 1955 (gage height, 23.5 ft, from 

floodmarks), by computation of flow over Rainbow Dam; minimum daily, 5.1 cfs Mar. 5, 

1944, Oct. 28, Nov. 11, 1945, and Feb. 22, 1947.

Remarks. Records excellent except those for period of no gage-height reccrd, which are 

good. Flow regulated by powerplant, by Ofis , Barkhamsted, East Branch, Nepaug. and 

Whigville Reservoirs, having a combined capacity of about 6,450,000 ,OOC cu ft (see 

p. 2.30), and by diversions for domestic water supply from Barkhamsted, Nepaug, and 

Whigville Reservoirs and Whites Bridge pumping plant.

Revisions (water years)'. WSP 851: 1936. WSP 1051: 1945(m) . WSP 1171: Drainage area. 

WSP 1301:1937-43 (adjusted figures of monthly and yearly discharge and runoff).

cubic feet per second, water'year October 1955 to September 19bt

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

774 

690

726

462

614

1,240

1,650

2,240

1,720

1,730

1,340

*899

1,120

1,400

6,930

23,500 

29,900

18,800

11,300

7,300

5,570

4,260

3,420

2,970

2,840

3,020

2,560

2,350

1,850

2,140

6,190

151,505

4,887

+ 129

Nov.

8,280 

6,380

4,150

4,250

7,500

11,600

8,840

6 , 600

4,030

3,660

3,810

4,660

4,310

4,440

4,340

4,340 

4,320

4,050

3,110

3,020

2,810

2,670

2,530

2,320

2,460

2,060

1,800

1,940

1,900

2,210

*128,390

4,280

-29

Dec.

2,110 

1,610

1,470

2,080

2,320

2,330

2,220

1,600

1,700

1,780

1,310

1,750

1,520

1,330

1,490

1,540 

*1,160

1,280

1,370

1,220

854

854

964

720

738

572

604

810

464

652

406

40,828

1,317

-303

Jan,

513 

632

560

482

574

650

698

434

866

2 , 100

2,320

2,000

2,530

2,600

2,060

1,360 

1,580

761

680

*864

1,010

573

799

810

607

*664

696

612

824

746

1,130

32,735

1,056

+4

Feb.

1,070 

1,010

701

700

830

696

1,060

793

1,220

1,080

911

1,440

1.760

1,390

957

1,250 

1,080

895

706

848

790

*778

696

738

706

1,500

1,550

1,130

1,010

29,295

1,010

+45

Mar.

1,010 

820

898

1,370

1,370

1,150

1,480

2,300

2,520

1,630

1,260.

1,130

1,360

1,410

1,350

1,110 

1,160

516

1,155

344

1,290

1,080

1,050

1,520

1,300

1,370

1,350

1,580

1,660

1,630

1,660

41,468

1,338

+ 7

Apr.

1,610 

1,650

2,240

2,460

3,280

4,550

4,500

4,280

3,080

3,220

3,560

3,670

3,630

3,710

3,940

4,670 

6,220

6,600

5,180

4,300

3,210

2,990

3,340

3,760

3,430

3,360

3,410

3,070

4,570

6,220

113,710

3,790

+423

May

S,790 

5,100

4,140

3,560

3,320

2,830

2,760

2,600

2,530

2,260

1,340

1,470

1,580

1,490

1,200

1,020 

1,250

1,250

1,040

904

981

852

788

904

922

878

956

878

731

754

724

57,802

1,865

+4

June

956

1,460

1,810

2,910

2,460

2,000

1,360

1,120

740

372

858

*928

642

541

468

542 

691

398

504

935

760

774

635

395

528

430

574

607

559 

459

£7,196

907

-88

July

262

504

413

444

228

754

1,190

532

459

760

631

541

505

716

626

1,250 

268

225

532

575

579

320

490

400

420

550

550

4?0

230 

3SO

190

15,784

509

-46

Aug.

400 

320

380

480 2~60~

230

235

300

328

365

368

208

217

250

403

302 

374

382

274

369

257

186

160

376

378

142

259

334

196 

£32

*436

9,421

504

-101

Sept.

404 

277

125

312

257

252

823 514"

507

524

540

566

307

350

339

124 

.377

220

584

461

*384

382

301

301

502

638

512

718

460 

282

11,543

385

-59

Adjusted for diversion and change in reservoir contents

Mean 

Cfsm 

In.

5,016 

8.49 

9.79

4,251 

7 .19 

8.02

Calendar year 1955 : 

Water year 1955-56 :

1,014 

1.72 

l.ia

1,060 

1.79

£.06

1,055 

1.79 

1.33

1,345 

2.iB 

2.63

4,213 

7 .13 

7.96

1,869 

3.16 

3.64

Observed

Max 56,700 Min 150 Mean 2,086 

Max 29,900 Min 124 Mean 1,802

819 

1.39 

1.55

463

0.738 

0.91

203 

0.343 

0.40

326 

0.552 

0.62

Adjusted

Mean 2,132 cfsm 3 

Mean 1,799 Cfsm 3

61 In. 48.94 

04 In. 41.49

* Discharge measurement made on this day.

t Change in contents in Otis, Barlchamsted, East Branch, Nepaug and Whigville Reservoirs, and 

diversion from Barkhamsted, Nepaug, and Whigville Reservoirs and Whites Bridge pumping plant, equivalent in cubic feet per second; furnished by Collins Co. Water Bureau at Hartford Metropolitan District Commission, and Board of Water Commissioners of New Britain.

t'ote. No gage-height reccrd July 22 to Aug. 7; discharge estimated on basis of powerplant data.
2?3

South Branch Park River at Hartford, Conn.

Location. --Lat 41°44'OC", long 72°42'5l", on left "bank at upstream side of bridge on Newfield Avenue in Hartford, Hartford County, 0.7 mile downstream from confluence of 

Trout Brook and Piper Brook and 3.3 miles upstream from confluence with North Branch.

Drainage area.--40.6 sq mi.

Records available.--October 1936 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 31.07 ft above mean sea level, datum of 

1929 (levels by Department of Engineering, city of Hartford).

Average discharge.--20 years, 73.5 cfs.

Extremes.--Maximum discharge during year, 2,800 cfs Oct. 16; maximum gage height, 15.6 ft 

Oct. 16, from floodmark; minimum discharge, 13 cfs Aug. 20, 26, 27 (gage height, 

1.50 ft).

1936-56: Maximum discharge, 5,000 cfs (revised) Aug. 19, 1955, from rating carve 

extended above SOU cfs on basis of records for North Branch Park River and Park River 

at Hartford; maximum gage height, 19.65 ft Aug. 19, 1955, from floodmarks; minimum 

daily, 9.4 cfs Oct. 6, 1941.

Flood of Mar. 12, 1936, reached a stage of 12.1 ft, as determined by Hartford city 

engineers, from floodmarks.

Revisions. -The maximum discharge for the water year 1955 has been revised to 5,000 

cfs Aug. 19, 1955, from rating curve extended above 800 cfs on basis of records for 

North Branch Park River and Park River at Hartford, superseding figure published in 

WSP 1381.

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

Some regulation by mills and reservoirs above station.

Revisions (water years).--WSP 1201: 1939-40(P), 1941(M), 1943-44(P), 1950. Revised figares of discharge, in cubic feet per second, for the water year 1955, supers3ding 

tbo=,e published in WSP 1C81 are given herewith:

Month

Water year 1954-55. .............

Of s -days Maximum

3,880

Minimum

14

Mean

94.7

Per square

mile

2.33

Runoff in 

inches

31.66

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3 

4

5

6 

7

S

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23 ,

24

25

26

27

28

29

30 

31

Tatal

Mean

Cfsm

In.

 

Oct .

52

38

45 

42

39

118 

203

151

111

79

70

65

61

70

704

1,820

840

373

287

*227

186

144

126

125

126

115

94

85

79

296

548

7,319

236

5.81

6.70

Nov.

208

*152

125 

444

815

375 

249

204

173

152

325

186

134

306

190

205

184

120

108

108

108

84

74

70

72

68

62

72

72

66

5,511

134

4.53

5.05

Dec .

*54

62

49

64

8_6

81 

69

63

63

52

49

E8

56

*54

54

52

40

38

51

49

49

46

42

39

39

36

45

42

40

42

36.

1,600

51.6

1.27

1.46

Jan.

32

35

*46 

47

40

36 

28

25

153

128

81

128

98

63

48

48

48

49

46

48

34

31

38

36

34

32

29

27

26

108 

101

1,723

55.6

1.37

1.58

Feb.

*46

80

113 

44

66

59 

270

155

93

81

71

222

102

81

79

77

52

65

88

87

75

56

52

49

112

96

65

70

52

------

2,558

88.2

2.17

2.34

Mar.

49

74

79 

118

79

91 

*266

253

174

105

95

98

93

98

128

102

81

74

65

86

79

88

105

102

84

84

95

100

98

98 

98

3,239

104

2.56

2 ,95

Apr.

128

179

284 

250

296

273 

254

250

210

200

*175

150

132

118

123

228

180

123

112

96

88

84

102

94

63

68

67

57

129

164

4,677

156

3.84

4.28

May

*88

72

~84 123 

73

65 

80

68

60

63

58

55

53

54

57

54

52

59

54

57

49

47

52

45

35

34

47

47

34

30 

56

1,785

57.6

1.42

1.64

June

106

67

423

112

91

55 

47

*44

35

52

69

43

38

43

45

45

31

30

30

31

32

31

37

38

37

38

37

40

31

27

1,785

59.5

1.47

1.64

July

32

34

*35 

34

114

~58 150 

43

91

55

40

29

29

74

35

39

37

43

31

28

38

40

29

32

21

19

18

18

16

16 

*17

1,295

41.8

1.03

1.19

Aug.

18

18

18

18

17

17 

18

21

20

18

17

14

15

23

23

22

22

37

17

15.

i5

23

19

16

16

13

13

17

19

22 

16

605

19.5

C .480

0.55

Sept.

15

31

24

14

*17

22 

34

17

21

23

25

26

20

18

19

34

25

36

29

42

23

20

19

41

24

22

23

84

40

34

822

27.4

0.675

0.75

Calendar year 1955: Max 3,880 Win 1.4 Mean no Cfsm 2.71 In. 36.91

Water year 1955-56: Max 1,820 Min 13 Mean 89.9 Cfsm 2.21 In. 30.1?

Peak discharge (base, 550 ?fs).--Oct. 16 (2 p.m.) 2,800 cfs (15.6 ft at 4 p.m.); Oct. 31 (2 a.m.)

878 ofs (8.43 ft, 4 to 5 a.m.); Nov. 5 (3 a.m.) 1.06O ofs (9.20 ft at 6 a.m.); June 3 (3 a.m.) 69O

cfs ,7.07 ft from 10 a.m. to 12 m.).

Discharge measurement made on this day.

Note.--No gage-height record Feb. 17-24, 26, 27, Apr. 9-11, Aug. 1 to Sept. 4; discharge estimated 

on basis of recorded range in stage, weather records, and records for Park River at Hartford.
224 CONNECTICUT RIVER BASIN

North Branch Park River at Hartford, Conn.

Location.--Lat 41°47'03", lung 73°42'3l", on right bank 60 ft downstream from stone-arch 

bridge on Albany Avenue, Hartford, Hartford County, and 3 miles upstream from confluence with South Branch.

Drainage area.--25.3 sq mi.

Records available.--October 1936 to September 1956.

Gage.--Water-stage recorder and masonry control. Datum of gage is 34.20 ft above mean sea 

level, datum of 1929 (levels by Department of Engineering, city of Hartford).

Average discharge.--20 years, 39.0 cfs.

Extremes.--Maximum discharge during year, 3,680 cfs Oct. 16, from rating curve extended 

above 1,600 cfs as explained below; maximum gage height, 12.40 ft' Oct. 16; minimum discharge, 2.6 cfs Aug. 20 (gage height, 1.23 ft).

1936-56: Maximum discharge, 10,000 cfs Aug. 19, 1955, from rating curve extended 

above 1,600 cfs on basis of slope-area determination of peak flow 2.6 miles upstream; 

maximum gage height, 18.8 ft Aug. 19, 1955, from floodmarks: minimum discharge, 0.04 cfs 

Sept. ?4, 25, 1943 (gage height, 0.75 ft): minimum daily, 0.04 cfs Sept. 24, 1943.

Flood of Mar. 12, 1936, reached a stage of 11.2 ft as determined from floodmarks by 

city engineers of Hartford (discharge, about 2,800 cfs).

Remarks.--Records good except those for periods of backwater from debris, which are fair. 

Some regulation by mills upstream and by storage and diversion at Hartford water-supply 

reservoirs above station.

Revisions (water years).--W3P 891: 1939. WSP 1201: 1937(M), 1938, 19C9(M) , 1340, 

1941(M), 1942(P), 1943, 1944(M), 1945, 1946(P), 1947(M), 1948-49(P), 1950.

Rating tables, water year 1955-56, except periods of ice effect or backwater 

from debris (gage height, in feet, and discharge, in cubic feet pep second)

2.3 

2.8

64

165

4.0 

6.0

8.0 

11.0

440

830

1,400

2,750

Nov. 1 to Sept. 30

2.3 2.0 

3.4

6.8

1.2

1.3

1.5

1.7 13

Note. Same as 

ing table above

32

66

165

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12 

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

15

13

12

11

10

64

170

92

63

32

22

18 

18

45

1,160

2.500

951

273

180

122

*81

61

49

48

59

48

41

37

35

227

701

7,158

231

9.13

10.53

Nov.

160

*81

63

283

878

285

126

94

70

61

274

130 

76

225

126

325

137

68

52

53

53

53

44

44

38

34

31

32

30

*24

3,950

1.32

5.22

5.82

Dec.

b23

22

27

54

22.

53

b30

b21

22

19

16

16 

15

14

16

14

12

13

12

9.6

8.7

7.8

bB.S

b9.0

blO

b9.5

b9.0

8.7

8.2

8.7

8.7

602.4

19.4

0.767

0.88

Jan.

8.2

7.5

*8.0

8.0

8.7

9.0

8.5

8.0

b91

94

50

94

80

39

26

b27

22

b!9

14

15

12

11

11

10

9.6

8.5

8.5

8.2

8.5

68

66

858.2

27.7

1.09

1.26

Feb.

20

19

46

22

23

24

145

128

94

90

68

323 

122

70

65

62

b33

b20

27

30

b25

b!7

13

11

142

143

70

56

b31

1,939

66,9

2.64

2.85

Mar.

b23

55

109

148

63

53

324

255

130

83

.75

70 

57

53

63

45

24

42

30

39

40

46

63

61

b51

52

61

74

76

*60

63

2,388

77.0

3.04

3.50

Apr.

105

168

240

248

409

322

220

175

200

155

117

95 

81

69

65

170

134

72

54

42

37

29

37

45

28

29

30

24

56

150

3,606

120

4.74

5.29

May

52

30

74

44

29

23

31

24

18

19

19

15 

15

14

14

13

12

13

17

19

14

12

12

16

11

9.2

12

16

11

9.2

9.0

626.4

20.2

0.798

0.92

June

12

26

198

66

26

15

11

9.0

7.8

8.5

*21

11 

8.0

6.6

6.0

5.7

6.0

5.3

4.4

4.4

4.8

5.5

5.3

7.8

22

7.8

9.6

16

8.2

6,2

550.9

18.4

0.727

0.81

July

5.3

4.9

*4.8

4.8

20

66

29

12

21

17

9.2

7.5 

7.0

11

14

9.2

8.7

7.5

5.8

6.0

6,8

21

12

7,8

6.2

5.5

4.8

4.6

4.4

5,.6

3, 6

351.0

11.3

0.447

0.52

Aug.

3.4

3.3

3.3

3.4

3.2

3.1

3.3

4.6

3.3

3.1

3.0

2.7 

2.7

3.0

3.2

3.3

3.1

3.2

3.1

2.7

5.1

5.7

4.4

3.8

4.3

3.1

3.0

3.4

4.6

5.7

6-8

113.9

3.67'

0.145

0.17

Sept.

6.6

9.2

5.5

4.0

*3.4

3.4

20

6.0

4.0

3.3

3.1

3.0 

3.6

3.4

3.2

4.3

4.3

5.1

4.2

6.8

4.9

3.6

3.4

8.0

6.6

4.8

4.0

12-

6.6

6.0

166.3

5.54

0.219

0.24

Calendar year 1955 : Max 6,460 Min O.75 Mean 84.1 Cfsm 3.32 In. 45.14

Water year 1955-56 : Max 2,50O Min 2.7 Mean 61. 0 Cfsm 2.41 In. 32.79

Peak discharge (base. 50O cfs).--Oct. 16 (2 p.m.) 3,680 cfs (12.40 ft at 3:30 l.m.); Oct. 31 (4:30 

.m.) 996 cfs (6.67 ft at 6 a.m.); Nov. 5 (7 a.m.) 1,110 cfs (7.02 ft at 8:30 a.rr.); Apr. 5 (7:30 

.m.) 700 cfs (5.24 ft at 9 p.m.).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. Backwater from debris Oct. 1-4, June 19-29, July 8 to Aug. 1, Sept. 16-3O.
CONNECTICUT RIVER BASIN 225

Park River at Hartford, Conn.

Location. Lat 41°45 I 36", long 72°41'42", on left bank at downstream side of plate-girder 

footbridge on Riverside Street in Hartford, Hartford County, 1,300 ft downstream from 

confluence of North and South Branches, 1,300 ft upstream from Capitol Avenue Bridge, 

0.9 mile upstream from inlet of Park River conduit, and 2.0 miles upstream fi-om mouth.

Drainage area. 74.0 sq mi.

Records available.--October 1936 to September 1956.

Gage.--Water-stage recorder above spillway of timber dam. Datum of gage is 27.13 ft above 

mean sea level, datum of 1929 (levels by Department of Engineering, city of Fartford).

Average discharge.--20 years, 123 cfs.

Extremes.--Maximum discharge during year, 6,420 cfs Oct. 16 (gage height, 10.6 ft, from 

floodmark in gage house); minimum, 15 cfs July 24, Aug. 1, 7; minimum gage height, 

2.28 ft Aug. 7.

1936-56: Maximum discharge, 14,000 cfs (revised) Aug. 19, 1955 (gage height, 16.36 

ft, from floodmark in gage house), from rating curve extended above 3,600 cfs on basis 

of slope-area determination of peak flow); minimum, about 4 cfs Sept. 23, 1937; minimum gage height, 1.58 ft July 23, Aug. 15, 1943, result of temporary diversions upstream; minimum daily discharge, 11 cfs Oct. 6, 1941.

Revisions.--The maximum discharge for the water year 1955 has been revised to 

14,000 cfs Aug. 19, 1955 (gage height, 16.36 ft, from floodmark in gage house), from 

rating curve extended above 3,600 cfs on basis of slope-area determination of peak flow, 

superseding figure published in WSP 1381.

Remarks. Records good. Some regulation by mills above station and by storage end diversion at Hartford water-supply reservoirs on small backwater streams.

Revisions. Revised figures of discharge, in cubic feet per second, for the water year 

1955, superseding those published in WSP 1381 are given herewith:

Aug. 19, 1955........... 8,790

Aug. 20, 1955........... 6,54O

Month

Water year 1954-55 ...............

Cfs -days Maximum

8,790

Minimum

16

Mean

648

169

Per square 

mile

8.76

2.28

Runoff In 

inches

10.10

30.92

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12*

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

71

61

61

59

56

173

*415

280

211

125

104

95

87

94

1,790

4.150

2,570

779

536

*424

325

248

203

195

207

184

155

135

125

296

1,300

15,514

500

6.76

7.79

Nov.

448

*261

200

559

1.640

715

418

328

265

223

565

377

232

498

377

381

413

232

188

188

188

166

138

151

122

118

109

112

115

109

9,816

327

4.42

4.93

Dec.

*89

92

95

128

225

144

109

92

92

86

73

80

83

80

83

83

73

62

65

60

52

57

57

52

52

52

52

55

52

55

52

2,480

80.0

1.08

1-.24

Jan.

43

41

*50

57

50

48

43

32

213

265

162

265

215

125

86

83

80

73

67

67

52

48

55

50

48

46

43

39

32

170

229

2,877

92.8

1.25

1.44

Feb.

80

*109

200

89

98

103

374

382

223

188

148

530

265

162

148

155

98

100

128

141

112

78

75

67

213

287

141

144

92

-------

4,930

170

2.30

2.48

Mar.

85

120

180

320

170

160

540

»550

382

215

192

184

169

173

219

196

118

138

118

141

138

148

192

207

158

151

169

188

207

180

180

6,288

203

2.74

3.16

Apr.

244

*404

570

515

645

655

510

475

455

408

323

279

236

207

196

426

372

223

180

155

141

125

138

162

106

95

109

95

211

332

8,992

300

4.05

4.52

Hay

*155

112

215

141

112

95

118

103

89

89

89

80

75

75

78

73

70

75

75

75

67

78

62

70

50

46

62

70

52

48

48

2,647

85.2

1.15

1.33

June

128

92

585

207

131

80

67

62

50

57

*100

67

55

55

55

60

43

39

36

36

41

43

46

52

60

55

50

73

46

52

' 2,503

83.4

1.13

1.26

July

39

41

*41

41

138

248

103

65

125

80

60

41

39

108

60

57

52

52

43

32

50

75

52

52

34

30

27

27

23

23

25

1,883

60.7

0.820

0.95

Aug.

*25

25

25

25

23

23

25

30

27

25

23

20

21

30

30

29

29

46

23

IB

55

32

27

23

23

18

18

23

27

32

27

827

2e.7

O.T61

0.42

Sept.

25

38

36

21

*27

29

67

30

25

29

32

34

27

23

29

48

*32

50

41

57

36

29

27

62

39

30

30

~60 128

48

1,189

39.6

0.535

0.60

Calendar year 1955: Max 8,790 Min 16 Mean 207 Cfsm 2.80 In. 38.05

Water year 1955-56: Max 4,150 Min 18 Mean 164 Cfsm 2.22 In. 30.12

Peak discharge (base. 1,000 cfs). --Oct. 16 (5 p.m.) 6,420 cfs (10.6 ft); Oct. 31 (9 a.m.) 1,640

cfs (5.64 ft); Nov. 5 (8 a.m.) 1,940 cfs (6.06 ft).

* Discharge measurement made on this day.
226 CONNECTICUT RIVER BASIN

Hockanum River near East Hartford, Conn.

Location.--Lat 41°46'59", long 72°35"16", on left bank 700 ft downstream from dam at 

Case Bros. Inc. paper mill, l| miles downstream from Hop Brook, and 2f miles east of 

East Hartford, Hartford County.

Drainage area. 74.5 sq mi.

Records available. September 1919 to September 1921, July 1928 to September 1956.

Gage. Water-stage recorder. Datum of gage is 54.5 ft above mean sea level, datum of 

1929 (levels by Department of Engineer! 0 , city of Hartford).

Average discharge. 30 years, 117 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 1,520 cfs Oct. 16 (gage height, 7.96 ft); min-

- imum, 20 cfs Aug. 4-8 (gage height, 1.11 ft).

1919-21, 1928-56: Maximum discharge, 5,160 cfs Sept. 21, 1938 (gage height, 13.78 

ft, from floodmark), by computation of flow over dam just above gage; practically no 

flow at times caused by regulation; minimum daily, 1.2 cfs Sept. 2, 1920.

Remarks. Records excellent except those for periods of no gage-height record, which are 

fair. Flow regulated by Shenipsit Lake (see p. 231), other small reservoirs and industrial plants upstream.

Revisions (water years). WSP 781: Drainage area. WSP 851: 1934(M), 1936(M). WSP 

1D51:1920-21 and'1928-45 (monthly and yearly discharge and runoff). WSP 1201: 

1920(M), 1929(M), 1931, 1932-34(m), 1944.

Rating table, water year 1955-56 (gage height, in feet, anl 

discharge, in cubic feet per second)

1.1

1.2 

1.5 

2.0

26

54

104

3.0 

4.0 

6.0 

8.0

244

430

910

1,540

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Ttatal

Mean

(t)

Oct.

70

61

125

1OO

*80

134

160

85

133

158

97

94

62

111

528

1.240 

863

540

428

360

323

285

271

276

282

256

244

226

208 

291

710

8,801

284

+27.4

Nov.

480

342

314

432

1,050

625

460

400

360

342

480

430

360

450

430

420 

430

351

314

323

305

289

273

278

261

261

*252

265

243 

226

11,426

381

-23.6

Dec.

194

185

152

194

230

169

158

138

147

74

1H.

167

128

117

121

139 

63

68

148

113

97

123

125

60

15

130

110

100

110 

120

55

3,901

126

-6.3

Jan.

45

130

110

99

101

125

52

37

215

217

170

183

179

88

123

160

143

119

117

*131

55

46

134

102

99

82

123

53

46

189

180

3,653

118

+1.0

Feb.

119

140

207

90

128

195

229

236

196

174

108

270

265

194

166

163 

158

100

154

210

139

122

110

141

111

236

220

142

140

4,863

168

+15.2

Mar.

125

156

106

171

211

170

253

325

281

168

164

219

190

207

231

217 

149

190

221

210

204

208

222

227

233

249

219

207

206

on208

6,327

204

+8.5

Apr.

197

258

279

325

420

470

390

390

366

395

378

339

311

278

261

330 

356

310

277

255

217

203

225

192

146

205

*183

125

264

320

8,665

289

+23.0

May

256

233

238

224

167

180

229

184

131

207

175

121

141

194

137

132 

132

152

65

106

165

118

124

131

143

66

63

172

126 

61

113

4,686

151

-5.5

June

163

83

374

290

222

201

142

149

122

114

*142

107

100

94

93

72 

131

116

90

87

87

88

64

68

92

87

88

91

64

j>3

3,684

123

-10.1

Jjly

63

76

72

62

85

138

160

no

100

120

1QO

85

75

100

150

130 

93

86

84

112

112

111

91

*73

*44

76

31

43

56 

88

67

2,793

90.1

-13.7

Aug.

53

79

68

24

20

20

20

21

55

64

49

39

36

66

33

26 

27

41

58

110

141

T29

102

58

38

22

41

28

22

23

50

1,563

50.4

-22.8

Sept.

33

25

25

77

69

76

94

40

25

53

67

57

66

69

33

32 

72

84

75

84

78

36

24

80

84

77

72

114

42 

27

1,790

59.7

-16.0

Adjusted for change in contents in Shenipsit Lake

Mean

Cfsm 

In.

311 

4.17 

4.81

357 

4.79 

5.34

Calendar year 1955: 

Water year 1955-56:

120 

1.61

1.86

119 

1.60 

1.84

183 

2.46 

2.65

212 

2.85 

3.29

312

4.18 

4.66

146 

1.96 

2.26

Observed

Max 1,760 Min 4O Mean 181 

Max 1,240 Min 20 Mean 170

113 

1.52 

1.70

76.4 

1.03 

1.19

' 27.6 

0.370 

0.43

43.7 

0.587 

0.65

AS jus tea

Mean 179 Cfsm 2.40 In. 32.67 

Mean 168 Cfsm 2.26 In. 3O.68

Peak discharge (base. 900 cfs).--Oct. 16 (2 to 3 p.m.) 1,520 cfs (7.96 ft); Nov. 5 (4 a.m.) 1,180 

cfs (6.94 ft).

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Shenipsit Lake. Records furnished 

by Rockville Water & Aqueduct Co.

Note. No gage-height record Dec. 21 to Jan. 3, June 4, July 7-16; discharge estimated on basis of 

recorded range in stage, weather records, and records for nearby streams.
CONNECTICUT RIVER BASIN 227

Salmon River near East Hampton, Conn.

Location.--Lat 41°33'11", long 72°26'57", on right bank at Old Comstock Bridge, a short 

distance downstream from New London-Middlesex County line, 0.6 mile downstream from 

Dickinson Creek and 3f miles southeast of East Hampton, Middlesex County.

Drainage area. 105 sq mi.

Records available. July 1928 to September 1956.

Gage. Water-stage recorder. -_tum of gage is 69.50 ft above mean sea level, datum of T929.

Average discharge. 28 years, 182 cfs.

Extremes. Maximum discharge during year, 9.130 cfs Oct. 16 (gage height, 8.21 ft); minimum, 8 cfs Aug. 20 (gage height, 0.46 ft).

1928-56: Maximum discharge, 12,400 cfs Sept. 21, 1938 (gage height, 10.96 ft), by 

computation of flow over dam half a mile upstream; minimum, 1.0 cfs Oct. 31, 1935 (gage 

height, -0.17 ft); minimum daily, about 1 cfs Oct. 13, 1929.

Remarks. Records good except those for periods of ice effect, which are fair. Slight 

regulation at low flow by mills upstream.

Revisions (water years).--WSP 1201; 1929.

Rating tables, water year 1955-56, except periods of ice effect 

and discharge, in cubic feet per second)

Oct. 17 to Sept. 6

ge height, In ft-<st,

Sept, 7-30

1.1 

1.5 

2.0 

3.0

74

170

365

1,020

4.0 2,040

5.0 3,360

7.0 6,590

0.4 4.1

.5 10.4

.7 27

1.0 68

1.5 195

2.0 380

3.0 1,020

4.5 2,670

1.0 

1.4 156

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

15

14

15

16

17

18

19

20

21

22

25

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

145

150

102

87

78

154

586

445

320

221

170

143

128

198

2,490

*6,20Q

2,600

1,270

1,020

745

569

475

416

394

407

564

528

296

278 

490

1,520

22,747

734

6.99

8.06

Nov.

766

505

416

825

2,550

1,080

675

530

460

416

700

592

455

660

622

606

640

475

402

380

560

548

524

340

320

293

270

263

252 

221

16,526

551

5.25

5.86

Dec.

212

202

218

274

524

270

218

195

*183

176

161

158

150

144

150

141

127

150

127

102

90

80

75

80

90

90

70

60

55 

60

65

4,477

144

1.57

1.58

Jan.

60

65

70

75

80

75

65

60

260

500

352

394

389

316

256

232

189

*180

170

150

140

130

125

120

115

110

110

105

110 

170

250

5,423

175

1.67

1.92

Feb.

210

200

380

308

265

25?

438

460

372

328

328

553" 564

580

540

524

270

545

412

389

508

228

218

189

?S5

540

289

282

246

9,426

325

5.10

5.34

Mar.

215

249

324

402

364

328

566

758

661

485

420

598

572

402

505

450

324

352

520

293

296

*317

372

455

594

352

540

548

548 

594

594

12,158

592

3.73

4.30

Apr.

420

515

780

710

752

703

569

654

622

675

628

490

416

568

360

604

628

455

376

340

316

296

285

296

270

263

270

249

308 

450

14,068

469

4.47

4.99

May

356

282

416

544

344

293

368

316

274

285

274

249

221

205

208

205

192

195

208

212

189

167

167

202

175

150

195

267

195 

158

150

7,460

241

2.50

2.65

June

138

212

784

530

552

249

195

164

147

144

225

167

125

100

87

85

87

76

65

62

62

72

65

57

52

45

46

62

91

62

4,586

155

1.46

1.63

July

48

41

38

34

70

332

198

109

100

79

 8

58

57

161

141

85

72

58

48

44

54

114

81

*68

55

45

38

55

51 

28

25

2,415

77.9

0.742

0.86

Auf .

25

*25

21

19

18

18

17

18

17

16

14

15

15

16

16

17

15

15

11

9_

16

18

21

18

19

18

17

16

16 

16

16

518

16.7

0.159

0.18

Sept.

18

19

22

25

19

39" 17

39

25

20

18

18

20

20

29

48

50

40

29

50

58

52

27

*54

39

32

28

139

106 

49

1,067

35.6

0.339

0.38

Calendar year 1955: Max 6,200 Min 7.2 Mean 272 Cfsm 2.59 in. 55.18

Water year 1955-56: Max 6,200 Min 9 Mean 276 Cfsm 2.63 In. 55.75

Peak discharge (base. 1,500 cfs).--Oct. 16 (8 a.m.) 9.150 cfs (8.21 ft); Oct. 51 (7:30 e.m.) 

1,940 cfs (3.92 ft); Nov. 5 (5 a.m.) 2,940 cfs (4.68 ft). 

* Discharge measurement made on this day. 

Note. Stage-discharge relation affected by ice Dec. 21 to Jan. 9, Jan. 19 to Feb. 5.
228 CONNECTICUT RIVER BASIN

Eightmile River at North Plain, Conn.

Location. Lat 41°26'30", long 72°20 I 00", at center of span on downstream side of bridge 

 on State Highway 82 at North Plain, Middlesex County, 500 ft downstream from Strongs

Brook, 0.8 mile upstream from confluence with East Branch, and 6 miles upstream from

mouth of Eightmile River.

Drainage area. 18.6 sq mi.

Records available. September 1937 to September 1956. Prior to October 1938, published 

as West Branch Eightmile River near North Lyme. October 1938 to September 1954, published as West Branch Eightmile River at North Plain.

Gage.--Wire-weight gage and, since Nov. 2, 1952, crest-stage Indicator; gage read once 

aally. Datum of gage is 57.74 ft above mean sea level, datum of 1929. Prior to Hay 1, 

1939, staff gage at bridge 0.7 mile downstream at datum 12.17 ft lover.

Average discharge.--19 years, 40.6 cfs (adjusted to present site).

Extremes.--Maximum discharge during year, 2,350 cfs Oct. 15 (gage helgtt, 7.72 ft), from 

rating curve extended above 1,220 cfs on basis of computation of perk flow through 

highway bridge and over road; minimum, 2.0 cfs Aug. 20, 30, Sept. 11, 12 (gage height, 

1.93 ft).

1937-56: Maximum discharge, that of Oct. 15, 1955; minimum observed, 0.05 cfs 

Sept. 12, 1944 (gage height, 1.60 ft).

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are fair.

Revisions (water years). WSP 1141: 1948. WSP 1331: 1940-41(M), 1943(M), 1948(M), 

1951(M), 1952-53(P).

Rating tables, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

Oct. 16 to Sept. 30

2.4 

2.7 

3.0 

3.5 

4.0 

5.0

21

40

65

120

215

427

1.9 

2.1 

2.5 

3.0 

3.5

2.0

6.2

19

4.0 

4.5 

5.0

6.0 

7.0

154

265

415

860

1,610

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

59

41

31

28

25

24

216

126

107

71

59

50

*43

49

1,050

*1,480

608

320

384

221

145

120

99

96

96

84

77

69

65

91

267

6,201

200

10.8

12.45

Nov.

*145

107

91

239

529

216

136

114

*96

*86

154

107

91

145

120

128

128

96

8682'

77

68

64

77

64

60

56

56

48

44_

3,510

117

6.29

7.02

Dec.

42

40

45

52

48

41

38

38

36

34

34

32

31

32

29

28

b26

b26

25

b21

a!9

a!7

b!6

a!7

b20

b!8

b!6

b!4

b!3

b!4

3.15

877

28.3

1.52

1.75

Jan.

b!4

bT4

a!5

a!6

b!8

b!6

a!5

b!4

b45

82

56

72

68

56

48

43

a36

*b36

b36

a35

b34

b30

b26

a25

b24

a23

b22

a21

b21

b32

b42

1,035

33.4

1.80

. 2.08

Feb.

b34

b38

a90

b60

52

48

114

82

72

68

82

145

a!07

86

72

68

60

a82

102

77

68

56

45

39

72

68

60

77

60

2,084

71.9

3.87

4.17

Calendar year 1955: Max 1,480 Min 0.8

Mar.

48

48

64

60

52

a 52

86

114

102

82

68

a60

a56

77

91

82

a56

a6 4

a60

a60

56

60

64

77

68

68

68

68

64

82

82

2,139

69.0

3.71

4.28

Apr.

77

86

128

107

107

86

82

114

102

102

*102

86

72

64

64

120

107

91

72

64

64

60

56

52

48

44

56

52

52

77

2,394

79.8

4.29

4.79

May

364

a48

60

60

56

52

86

64

352

a48

48

45

43

40

39

38

36

35

34

33

30

28

26

27

24

23

36

43

32

27

25

1,302

42.0

2.26

2.61

June

22

25

184

107

64

a48

41

39

34

30

29

24

20

19

16

14

16

14

11

11

13

13

10

12

11

8.2

7.6 979~

*10

a9.3

872.0

29.1

1.56

1.74

July

6.8

5.5

4.8

4.0

15

68

29

17

34

32

19

a!4

38

72

36

22

17

13

11

9.9

19

45

24

*19

15

11

11

11

10

8.2

7.0

648.2

20.9

1.12

1.29

Aug.

6.5

672

5.0

4.3

3.8

3.8

3.6

3.4

3.1

2.8

2.9

2.8

2.6

2.6

3.1

4.0

3.1

2.6

2.2

2.0

4.0

4.5

3.8

3.1

3.1

3.3

2.6

2.6

*2.2

2.0

2.2

103.8

3.35

0.180

0.21

Sept.

2.6

3.3

5.2

3.1

2.6

2.6

8.2

4.8

3.3

2.6

2 0

270

3.1

3.4

a5. 5

a8.7

7.9

6.2

4.5

5.2

5.7

4.8

3.8

*6.5

5.5

4.3

3.6

14

8 . 2

171.2

5.71

0.307

0.34

Mean 61.4 Cfsm 3.30 In. 44.84

Water year 1955-56: Max 1,480 Min 2.0 Mean 58.3 Cfsm 3.13 In. 42.73

Peak discharge (base, 350 cfs). Oct. 15 (about 12 p.m.) 2,350 cfs (7.72 ft); Oct. 31 (about

6 a.m.) 350 cfs (4.80 ft); Nov. 5 (about 2 a.m.) 750 cfs (5.85 ft).

Discharge measurement made on this day. 

a No gage-height record; discharge estimated on basis of weather records and records for station 

on East Branch.

b Stage-discharge relation affected by ice.
CONNECTICUT RIVER BASIN 22 

East Branch Eightmile River near North Lyme, Conn.

Location.--Lat 41°25'40", long 72°20'05", on left bank at highway bridge on State Highway 156, 0.4 mile upstream from mouth, 1.1 miles north of North Lyme, New London 

County, 1.2 miles south of North Plain, and 65 miles upstream from mouth of Eightmile 

River.

Drainage area. 22.0 sq mi.

Records available.--September 1937 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 55.21 ft above mean sea level, datum of 

1929.

Average di s c harge.--19 years, 46.7 cfs.

Extremes. Maximum discharge during year, 2,200 cfs Oct. 16 (gage height, 5.90 ft); minimum, 2.5 cfs Aug. 19, 20 (gage height, -0.01 ft).

1937-56: Maximum discharge, 2,950 cfs Sept. 21, 1938 (gage height, 7.00 ft), computed on basis of study of flow at contracted control section; no flow Sept. 3, 1938, 

result of regulation; minimum daily, about 0.03 cfs Oct. 2, 1941.

Remarks. Records good. Occasional regulation at low flow.

Rat ing tables , water year 1955-56,

heighb, in feet, 

( Stage -dis

0.7

.9

1.5

2.0

Oct.

23

43

107

165

1-31

2.5

3.0

3.5

4.0

except periods of ice effect

and discharge, in cubic feet per second) 

charge relation indefinite Oct. 16)

233

329

470

690

Nov. 1 to

-0.1 1.6

0.0 2.6

.1 4.0

.2 5.8

.3 8.2

.4 12

.5 18

Sept. 30

1.0

1.5

2.0

2.5

3.0

3.5

107

165

233

329

470

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

H

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

58

56

46

36

29

38

182

188

126

89

70

60

*54

55

409

*1.490

684

310

254

204

156

132

114

100

100

92

80

70

65

84 

240

5,671

183

8.32

9.59

Nov.

172

121

97

135

470

242

161

133

114

*100

148

148

112

140

153

133

151

119

95

92

84

82

74

76

75

66

60

58

56

50

3,717

124

5.64

6.29

Dec.

47

44

46

52

63

59

47

42

38

37

34

32

29

29

31

29

26

26

25

b21

b!9

b!7

b!5

b!6

b!7

b!8

b!6

b!4

b!2

b!3

b!3

927

29.9

1.36

1.57

Jan.

b!3

b!2

bT3

b!5

b!7

b!7

b!5

b!4

b45

122

82

74

79

66

53

49

37

*37

b37

b35

b30

b28

b26

b25

b24

b23

b23

b22

b21

b29

b44

1,127

36.4

1.65

1.90

Feb.

b46

b44

b94

b82

68

63

115

130

100

83

90

173

143

106

90

87

72

88

135

108

83

b59

b55

b48

68

103

78

80

72

2,563

88.4

4.02

4.34

Mar.

b56

61

73

74

68

65

86

135

141

 103

83

78

72

86

122

98

b64

b78

b69

69

67

71

81

93

82

79

78

82

82

104

2,598

83.8

3.81

4.39

Apr.

99

106

140

128

116

98

86

138

138

124

*112

94

79

72

69

114

157

114

86

74

68

63

58

58

54

50

54

52

52

63

2,716

90.5

4.11

4.59

May

66

52

68

71

59

52

76

79

57

52

50

46

46

42

40

38

38

36

37

36

34

31

30

31

29

il

61

45

35

31

1,433

46.2

2.10

2.42

June

30

31

140

-86 145

58

46

39

34

32

32

29

26

23

20

19

19

16

13

12

13

17

16

13

13

11

9.3

5TT

9.7

972.7

32.4

1.47

1.64

July

7.7

6.5

5.8

5.3

15

65

51

28

40

50

31

20

42

60

52

31

23

18

14

12

40

57

42

*27

21

17

14

14

12

10 8 2

839.5

27.1

1.23

1.42

Aug.

7.7

7.5

e.s

5.8

5.3

5.3

5.1

4.7

4.4

4.0

4.0

3.7

3.6

3.4

3.7

4.2

3.4

3.0

2.6

iJ>

4.0

5.4

4.7

4.5

5.6

4.5

3.7

3.3

*3.0

2^9

134'. 9

4.35

0.198

0.23

Sept.

3.2

3.7

5.1

4.7

3.7

3.6

6.5

7.5

5.3

4.2

3.7

3.6

3.6

3.6

4.7

9.0

10

8.0

6.5

6.5

7.7

7.0

5.8

«9.3

10

7.7

6.8

- 29

36 19"

245.0

8.17

0.371

0.41

Calendar year 1955: Max 1,49O Min 0.35 Mean 62.5 cfsm 2.84 In. 38.55

Water year 1955-56: Max 1,490 Min 2.5 Mean 62.7 Cfsm 2.85 In. 38.79

Peak discharge (base, 30O cfs). --Oct. 16 (2 p.m.) 2,200 cfs (5.90 ft); Nov. 5 (12 m.) 575 cfs

(3.73 ft).

- Discharge measurement made on this day. 

b Stage-discharge relation affected by Ic
230 CONNECTICUT RIVER BASIN

Reservoirs in Connecticut River basin

First Connecticut and Second Connecticut Lakes on Connecticut River are operated as a unit 

for storage of water for power.The reservoirs in downstream order and usable capacity 

of each are as follows: Second Lake, 12 miles northeast of Pittsburg, N. H., 

506,000,000 cu ft; First Lake, 5 2/3 miles northeast of Pittsburg, K. H., 3,330,000,000 

cu ft. Records furnished by New England Power Co.

Lake Francis on Connecticut River at Pittsburg, N. H., completed in March 1940, used for 

 storage of water for power, has usable capacity of 4,326,000,000 cu ft. Records furnished by New Hampshire Water Resources Board.

Moore Reservoir and Comerford Station Pond on Connecticut River are operated as a unit for 

storage of water for hydroelectric power development. The reservoirs in downstream 

order and usable capacity of each are as follows: Moore Reservoir, 4| miles northwest 

of Littleton, N. H., filled in April 1956, 4,970,000,000 cu ft; Comerford Station Pond, 

4| miles northeast of Barnet, Vt., completed in 1930, 1,279,000,000 cu ft. Records 

furnished by New England Power Co.

Union Village Reservoir on Ompompanoosuc River, l£ miles north of Unior Village, Vt., completed in 1949 for flood control, has usable capacity of 1,660,000,000 cu ft. Records 

furnished by Corps of Engineers.

Lakes and ponds in Mascoma River basin.--These reservoirs are operated as a unit for storage of water for power.The reservoirs and usable capacity of each are as follows: 

Goose Pond, 5£ miles northeast of Mascoma, N. H., 509,000,000 cu ft; Grafton Pond, 8| miles southeast of Mascoma, 144,000,000 cu ft; Crystal Lake, 5f iriles southeast of 

Mascoma, 75,000,000 cu ft; Mascoma Lake at Mascoma, 337,000,000 cu ft; total usable 

capacity of the four reservoirs, 1,060,000',000 cu ft. Records furnished by New England 

Power Co.

Sunapee Lake on Sugar River at Sunapee, N. H., used for recreation and storage cf water 

for power, has usable capacity of 862,000,000 cu ft. Records collected by Geological 

Survey.

Surry Mountain Reservoir on Ashuelo't River, 4| miles north of Keene, N. H., completed in 

1942 for flood control, has usable capacity of 1,420,000,000 cu ft. Records furnished 

by Corps of Engineers.

Birch Hill Reservoir on Millers River, 1 mile east of South Royalston, Mass., completed in 

1941 for flood control, has usable capacity of 2,180,000,000 cu ft. Records furnished 

by Corps of Engineers.

Tully Reservoir on East Branch Tully River, 3| miles north of Athol, Mass., completed in 

1948 for flood control, has usable capacity of 958,000,000 cu ft. Fecords furnished 

by Corps of Engineers.

Somerset and Harriman Reservoirs in Deerfield River basin are operated as a unit for storage of water for hydroelectric power development. The downstream order and usable 

capacity of each are as follows: Somerset Reservoir on East Branch Deerfield River, 

2| miles northeast of Somerset, Vt., 2,500,000,000 cu ft; Harriman Feservoir on Deerfield River at Davis Bridge, Vt., 5,060,000,000 cu ft. Records furrished by New England Power Co.

ftuabbin Reservoir on Swift River, 3£ miles east of Belchertown, Mass., completed in 

August 1939 for storage of water for municipal supply, has usable capacity of 

55,700,000,000 cu ft. Records furnished by Water Division, Metropolitan District 

Commission.

Ludlow Reservoir in Chicopee River basin, 3£ miles northwest of Three Fivers, Mass., completed in 1875 for storage of water for municipal supply, has usable capacity of 

201,000,000 cu ft. Records furnished by Board of Water Commissioners, Springfield, 

Mass.

Watershops Pond on Mill River in Springfield Mass., completed in 1857 for storage of water 

for power, has usable capacity of 70,600,000 cu ft. Records furnished by Ordnance Department, Department of the Army.

Knightyille Reservoir on Westfield River, 4 miles north of Huntington, Mass., completed in 

1941 for flood control, has usable capacity of 2,130,000,000 cu ft. Records furnished 

by Corps of Engineers.

Borden Brook and Cobble Mountain Reservoirs in Westfield Little River basin are operated 

as a unit for storage of water for municipal supply and for hydroelectric power development. The downstream order and usable capacity of each are as follows: Borden Brook 

Reservoir on Borden Brook, 3^ miles south of Blandford. Mass., 344,COO,000 cu ft; 

Cobble Mountain Reservoir on Westfield Little River, 6j miles west cf Westfield, Mass., 

3,050,000,000 cu ft. Records furnished by Board of Water Commissiorers, Springfield, 

Mass.

Otis Reservoir in Parmington River basin, lat 42"09'35", long 73 0 03'33 1 ', 1 mile northeast 

of Cold Spring, Berkshire County, Mass. Drainage area, 17.2 sq mi. Completed in 1865 

for storage of water for power. Usable capacity, 780,000,000 cu ft. Records available, 

April 1913 to September 1956. Records furnished by The Collins Co., Collinsville, Conn.

Barkhamsted. East Branch, and Nepaug Reservoirs in Farmington River basin are operated as 

a unit for municipal water supply and compensation for water divertel from river. The 

downstream order and capacity are as follows: Barkhamsted Reservoir on East Branch 

Farmington River, lat 41°54'38", long 72°57'15", l£ miles south of Barkhamsted, Litchfield County, Conn. Drainage area, 53.8 sq mi. Completed in 1939 for storage of water 

for municipal supply. Total capacity, 4,250,000,000 cu ft. Records available, March

'1940 to September 1956. East Branch Reservoir on East Branch Farmington River 

lat 41°52'49", long 72°57'30", 1 mile east of New Hartford, Litchfield County, Conn.
CONNECTICUT RIVER BASIN 231

Reservoirs In Connecticut River basin Continued

Barkhamsted, East Branch, and Nepaug Reservoirs Continued.

drainage area, 61.2 sq mi.Completed in 1919 for storage of water to compensate for 

water diverted from river. Total capacity, 400,000,000 cu ft. Records available, 

August 1928 to September 1956. Nepaug Reservoir on Nepaug River, lat 41°49'37", 

long 72°56'34", 1? miles northwest of Collinsville, Hartford County, Conn. Drainage area, 

32.0 sq mi. Completed in 1918 for storage of water for municipal supply. Total capacity 

1,280,000,000 cu ft. Records available, August 1928 to September 1956. All three reservoirs are equipped with water-stage recorders. Records furnished by Water Bureau, 

Metropolitan District Commission, Hartford, Conn.

Whigville Reservoir on Whigville Brook in Pequabuck River basin, lat 41°44'08",

long 72"57'02", at Whigville, Hartford County, Conn. Drainage area, 3.95 sq mi. Completed in 1908 for storage of water for domestic water supply. Total capacity, 

8,650,000 cu ft. Records available, July 1928 to September 1956. Records furnished by 

Board of Water Commissioners, New Britain, Conn.

Shenlpsib Lake on Hockanum River, lat ,41 "52'06" , long 72°25'59", three-quarters o<~ a. mile 

east or Kockville, Tolland County, Conn. Drainage area, 16.5 sq mi. Dam raised to its 

present crest elevation in 1871, providing a usable capacity of 250,000,000 cu ft for 

Tj;nieipal supply and power; total capacity of lake, 730,000,000 cu ft. Capacities based 

on lake survey by Connecticut State Board of Fisheries and Game. Records available, 

September 1919 to September 1921, July 1928 to September 1956. Stage records furnished 

by Rockville Water & Aqueduct Co.

Month-end usable contents, in millions of cubic feet, water year October 1955 to September 1956

Date

Sept. 30, 1955 ..... 

Oct. 31...........

Jan. 31, 1956.....

Sept. 30. ..........

Date

Sept. 30, 1955.....

Jan. 31, 1956.....

Sept. 30. ..........

Date

Sept. 30, 1955.. ...

Jan. 31, 1956. ....

Sept. 30. ..........

Date

Sept. 30, 1955.....

Nov. 3D. ..........

Jan. 31, 1956..... 

Feb. 29...........

Mar. 31...........

Sept. 30. ..........

First and 

Second 

Connecticut 

Lakes

2,845.1 

2,410.7

1,263.7

56.8

3,112.7

3,164.8

Sunapee 

Lake

401 

439

303

422

275

660

605

398

333

Quabbin 

Reservoirt

54,706

54,245

50,618

Otis 

Reservoir

521 

620

597

539 

322

156

199

0

18

Lake 

Francis

3,246.6 

2,793.7

1,747.3

3,437.7

3,404.5

Surry 

Mountain 

Reservoir

0.1

15.3

13.2

34.3

13.2

8.2

.1

.2

Ludlow 

Reservoir

148.7

164.0

145.3

Barkhamsted, 

East Branch 

and Nepaug 

Reservoirs

5,826

4,569

4,755

4,901

4,020

Moore Reservoir and 

Cotnerford 

Station Pond*

1,221 

1,298

1,266

1,230

6,038

6,051

6,217

Birch 

Hill 

Reservoir

2.7 

15.8

1.3

3.6

3.6

3.3

1.3

1.0

2.3

Watershops 

Pond

0

0

0

Whigville 

Reservoir

5.1

6.4

8.7

8.8

3.7

Union 

Village 

Reservoir

1.9 

3.9

4.5

2.2

13.1 

10.6

11.2

36.8

4.5

2.4

2.4

3.6

3.6

Tully 

Reservoir

0.2 

3.6

18.0

18.5

18.0 

24.2

4.8

192.0

.4

.1

0

O

.1

Knightville 

Reservoir

0.4 

338.8

13.0

6.5

.1

0

.2

Shenipsit 

Lake

618.8 

692.3

631.0

617.0 

655.0

677.9

737.5

557.2

Lakes and 

ponds., in 

Mascoma 

River basin

803.4 

742.2

1,049.3

847.5

933.1 

682.2

326.8

974.5

1,230.4

1,110.7

1,039.0

813.3

838.6

Somerset 

and 

Har-'iroan 

Reservoirs

5,173.5 

6,815.0

6,136.3

4,210.1

3,734.8 

2,730.0

1,524.1

4,899.0

6,833.7

6,583.5

6,485.3

5,860.9

5,221.0

Boraen Brook 

and Cobble 

. Mountain 

Reservoirs

2,909.8

2,139.4

2,232.1

2,811.3

2,419.2

* Contents beginning with Apr. 30 include storage In Moore Reservoir.

t Affected by diversion from Ware River and diversion to Wachusett Reservoir and Chicopee Valley 

aqueduct.
23? MKNUNKETESUCK RIVER BASIN

Menunketesuck River near Clinton, Conn.

Location. Lat 41 "18 "10", long 72°31'OU", on right bank at Fairy Dell, 1UO ft downstream 

from Cobb's Bridge, 1.7 miles north of Clinton, Middlesex County, 2.4 miles downstream 

from Kelseytown Reservoir, and 4.9 miles upstream from mouth.

Drainage area. 11.6 sq mi.

Records available. June 1941 to September 1956.

Gage .--Water-stage recorder. Datum of gage is 23.64 ft above mean sea level, datum of

~1929.

Average djscharge. 15 years, 22.3 cfs (adjusted).

Extremes (unadjusted for storage or diversion). Maximum discharge during year, 709 cfs 

Oct. 16 (gage height, 5.93 ft); minimum, 0.02 cfs Sept. 12-14 (gag? height, 0.78 ft).

1941-56: Maximum discharge, 1,500 cfs (corrected) Sept. 11, 1954 (gage height, 

8.51 ft), from rating curve extended above 270 cfs on basis of computation of peak flow 

over Kelseytown Dam; no flow at times during August and September 1944; minimum gage 

height, 0.48 ft Sept. 9-12, 1944.

Remarks. Records excellent except those below 2.0 cfs, which are fair, and those for 

period of no gage-height record for Kelseytown Reservoir, which are poor. The daily 

discharge record for all periods except those of low flow is a summation of daily flow 

at gaging station and daily diversion from Kelseytown Reservoir as measured by venturi 

meter. During periods of low flow, diversions from Kelseytown Reservoir are compensated for by release of water from Killingworth Reservoir, which is located about 

2.5 miles upstream from Kelseytown Reservoir on a small tributary of Menunketesuck 

River. The drainage area of Killingworth Reservoir is so small that its yield is considered negligible during periods of low flow when it becomes necessary to draw upon 

it. Therefore, the daily discharge record for periods of low flow June 25 to July 6 

and Aug. 30 to Sept. 29 is a summation of daily flow at gaging station and daily diversion from Kelseytown Reservoir, minus daily draft on Killingworth Reservoir adjusted 

for daily change in contents in Kelseytown Reservoir. Draft on Killingworth Reservoir 

is determined at a staff-gage station just below spillway. Change in contents in Kelseytown Reservoir is determined at a temporary recording station at dam. No account 

is taken of evaporation from the reservoir surfaces. Flow at recor-ding gage station 

regulated by Killingworth and Kelseytown Reservoirs and by diversion for domestic 

water supply from Kelseytown Reservoir.

Cooperat ion.--Venturi-meter records and some other data furnished by the Guilford-Chester 

water Co.

Revisions (water years). WSP 1301: 1942-44(M).

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf sm

In.

Oct.

14

11

8.5

6.7

6.0

9.8

61

50

33

23

17

14

*12

11

231

573 282"

121

112

82

57

45

36

33

33

30

27

24

23

64

237

2,287.0

73.8

6.36

7.33

Nov.

102

61

46

83

420.

137

79

57

*46

41

66

62

45

59

64

59

81

54

43

41

36

35

32

35

31

28

25

24

23

20

1,935

64.5

5.56

6.20

Dec.

20

17

20

23

30

26

20

18

17

16

14

14

13

12

13

13

11

11

11

8.7

8.1

7.2

7.9

7.8

9.3

9.8

8.6

7.2

6.5

C b . Qy

6.9

413.9

13.4

1.16

1.34

Jan.

6.2

5.7

6.8

7.8

8.2

8.3

7.5

6.6

16

40

35

51

50

37

30

27

25

20

19

17

15

14

15

14

13

12

11

11

10

44

603.1

19.5

1.68

1.94

Feb.

31

32

70

45

37.

35

*69

70

51

45

45

95

6T

46

38

36

30

50

74

55

42

32

26

22

37

50

37

46

40

1,353

46.7

4.03

4.35

Mar.

30

29

37

37

33

32

42

68

m

46

37

34

32

35

64

*50

40

36

33

31

29

34

40

50

43

37

39

41

39

50

49

1,265

40.8

3.52

4.06

Apr.

45

43

62

52

44

36

33

61

54

50

39

33

28

27

28

61

70

45

36

30

28

26

24

22

21

20

?2

20

21

32

1,113

37.1

3.20

3.57

May

29

23

39

34

30

24

53

43

30

29

27

24

23

21

21

20

18

16

16

17

15

14

13

14

12

17~9.8

32

21

16

14

714.8

23.1

1.99

2.29

June

14

31

^86 137

45

31

24

19

16

15

13

13

11

9.4

7.6

6.6

5.6

5.0

4.4

3.8

4.1

5.1

5.1

4.5

3.2

2.6

2.2

2.4

2.1

IJL

530.6

17.7

1.53

1.71

July

1.8

1.7

1.5

1.1

3.8

21

1711 '

15

28

16

10

12

44

27

16

13

7.7

6.4

5.1

7.1

16

#14

10

7.8

6. 1

7.6

11

7.9

5.7

4 3

356.6

11.5

0.991

1.14

Aug.

*3.5

aZT9"

a2.5

a2.2

a2.0

al.9

al.8

al.6

al.5

al.5

al.4

al.4

al.3

al.3

al.3

al.5

al.3

al.2

al.2

al.l

al.9

a2.2

al.9

al.6

al.8

al.5

al.3

al.l

al.l

1.1

1.1

51 .'0

1.65

0.142

0.16

Sept. ,

1.3

1.5

2.2

1.6

1.2

1.1

1.8

1.8

1.3

1.1

1.1

1.0

.9

1.0

3.0

5.8

3.3

2.6

1.9

2.0

2.4

1.9

1.7

*3.0

2.0

1.9

2.0

3.8

3.8

4.4

62.4

2.08

0.179

0.20

Calendar year 1955: Max 573 Min 0.15 Mean 26.5 Cfsm 2.28 In. 30.99

Water year 1955-56: Fax 573 Min 0.9 Mean 29.2 Cfsm 2.52 In. 34.29

Peak discharge (base, 200 cfs, unadjusted for storage and diversion). Oct. 16 (1 p.m.) 709 cfs

(5.93 ft); Oct. 31 (8 a.m.) 288 cfs (4.05 ft); Nov. 5 (7 a.m.) 600 cfs (5.53 ft).

Discharge measurement made on this day. 

a No gage-height record for Kelseytown Res 

on basis of records for nearby streams.

voir, storage adjustments unknown; discharge estimated
QUINNIPIftC RIVER BASIN 233

Quinnipiac River at Wallingford, Conn.

Location.-- Lat 41°26'58", long 72°50'29", on right bank 0.8 mile downstream from Quinnipiac 

Street Bridge in Wallingford, New Haven County, and 2 miles upstream from Worton Brook.

Drainage area.--109 sq mi.

Records available. October 1930 to September 1956.

Gage. Water-stage recorder and timber control. Datum of gage is 20.24 ft above mean sea 

level, datura of 1929.

Average discharge. 26 years, 210 cfs.

Extremes. Maximum discharge during year, 3,000 cfs Oct. 17 (gage height, 8.49 ft); minimum, 56 cfs Sept. 14.

1930-56: Maximum discharge, 5,230 cfs Sept. 21, 1938 (gage height, 9.55 ft), by 

computation of flow over dam 1 mile upstream; minimum, 8 cfs Nov. 2, 1930 (gage height, 

0.38 ft).

Remarks. Records good except those for periods of doubtful or no gage-height record, which 

are fair. Low flow regulated by mills upstream.

Revisions (water years). WSP 781: Drainage area. WSP 851: 1933, 1936. WSP 971: 1940- 

42. WSP 1171: 1947 (calendar year mean). WSP 1201: 1931(M), 1932, 1934-35, 1937, 

1949-50(M). WSP 1381: 1936, 1938, 1940-41, 1943-44, 1949.

Rating tables, water year 1955-56 (gage height, In feet, and 

discharge, in cubic feet per second)

Oct. 1 to Nov. 5 6 to Sept. 30

0.9 88

2.0 286

4.Q 765

1,380

2,500

3,770

0.2

1.0 

2.0

54

117

No te . Same as 

preceding table 

above 2.0 ft.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

!*»

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Cf sin

In.

Oct.

163

144

120

105

96

134

310

320

265

216

185

149

117

157

823

2,140

2.320

1,750

*1,050

810

477

458

405

375

365

341

308

288

273

578

1,430

17,172

554

5.08

5.86

Nov.

1,160

634

492

829

2.080

1,740

1,000

725

592

530

642

680

542

745

765

745

765

*630

518

468

430

418

392

380

355

331

308

297

286

Z71

19,750

658

6.04

S.74

Dec.

257

250

259

297

543

320

265

236

226

218

208

200

193

189

189

189

176

171

170

159

140

143

143

145

149

153

140

131

127

129

126

6,041

195

1.79

2. OS

Jan.

122

113

124

126

131

129

126

119

317

480

368

430

418

320

242

216

212

191

175

171

165

156

156

147

147

143

138

134

131

204

320

6,371

20S

1.89

2.18

Feb.

226

244

405

278

240

259

618

568

405

331

308

442

442

343

297

276

246

343

430

418

320

254

222

200

2S3

320

*273

278

252

9,501

328

3.01

3.25

Mar.

218

224

271

308

308

308

492

630

592

455

368

343

331

368

442

430

308

320

308

286

297

297

331

405

355

331

*343

355

368

?sn 38O

11,152

360

3.30

3.80

Apr.

405

480

SOS

592

592

605

605

705

642

592

505

455

405

368

355

505

542

430

343

308

297

276

271

281

259

252

257

242

271

430

12,875

429

3.94

4.40

May

368

286

418

380

331

280

368

331

261

252

242

222

216

206

204

202

193

193

196

200

189

175

173

191

178

160

168

180

160 

145

171

7,239

234

2.15

2.48

June

20E

238

568

530

320

234

196

175

156

152

153

147

137

126

*117

120

112

108

106

104

102

109

105

102

alOO

a98

a98

108

118 

103

5,044

168

1.54

1.72

July

a98

a97

a95

a94

160

265

2T6

154

153

156

122

104

108

153

117

104

a98

a96

a94

a94

107

139

118

103

98

a 94

*a95

88

a86 

a83

a81

3,670

118

1.08

1.24

Aug.

a7_8

a76

374

372

370

aS 9

367

*a68

364

a62

361

361

860 362"

365

368

a64

a70

364

362

74

74

a66

363

362

a60

361

362

362

aS2

362

2,045

66.0

0.606

0.70

Sept.

a64

a73

61

aS4

aS2

a67

128

78

a64

360

359

360

360

a67

82

109

90

101

82

87

82

73

365

80

78

68

a65

146 -TT5

85

2,395

79.8

0.732

0.82

Calendar year 1955: Max 3,160 Min 27 Mean 291 Cfsm 2.67 In. 36.22

Water year 1955-53: Max 2,8£0 Min 59 Mean 282 Cfsm 2.59 In. 35.25

Peak disc _ir_e (base. 900 cfs).--Oct. 17 (3 to 8 a.m.) 3,000 cfs (8.49 ft); Oct. 31 (8 to 

1,530 cf3"T\;~.~49 ft); Nov. 5 (9 to 10 p.m.) 2,340 cfs (7.75 ft).

* Dischar £ measurement tnade on this day.

a Doubtful or no ja^e-height record; disehsrge estimated on bssis of recorder graph, weather records, and records for stations on sdjacent streams.
HOUSATONIC RIVER BASIN

East Branch Housatonic River at Coltsville, Mass.

Location. Lat 42°28'10", long 73° 11*43", on right bank at Coltsville, Berkshire County, 

It miles upstream from Unkamet Brook and 2 miles northeast of Pittsfield.

Drainage area.--57.1 sq mi.

Records available.--March 1936 to September 1956. Prior to October 1945, published as 

Housatonic River at Coltsville.

Gage.--Water-stage recorder. Datum of gage is 993.49 ft above mean'sea level, datum of 

192 9.

Average discharge. 20 years, 118 cfs (adjusted for diversion).

ring , 

ing curve extended above 1,300 cfs on basis of computations of flow over dam at

gage heights 10.38 and 10.80 ft; minimum daily, 14 cfs July 4.

1936-56: Maximum discharge, 6,400 cfs Sept. 21, 1938 (gage height, 10.80 ft), from

rating curve extended above 2,300 cfs on basis of computation of peak flow over dam;

minimum daily, 4.4 cfs Aug. 15, 1936.

Remarks.--Records good. Flow regulated by powerplants above station. Diversion above 

station from Cleveland Brook Reservoir for municipal supply of Pittsfield since May 1950.

Revisions (water years). WSP 851: 1936(M).

Rating tables, water year 1955-56 (gage height, in feet, and 

discharge, in cubic feet per second)

Oct. 16 to Sept. 30

2.2 

2.5

33

67

Note.--Same 

as following 

table above 

2.5 ft.

Discharge, in cubic feet pe

1.9 

2.1 

2.3

2.5

3.0

3.5 

4.0 

5.0 

6.0 

7.0

267

412

600

1,260

1,880

2ond, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

70

51

49

41

43

128

348

232

165

105

70

67

63

101

1,410

1,800 

1,210

639

422

336

257

203

169

167

250

209

*163

139

129 

157

652

9,845

316

10.6

Nov.

358

214

179

336

690

541

432

390

302

240

240

270

308

610

500

345 

384

275

207

175

175

155

145

159

157

131

115

124

121 

93

8,371

279

10.3

Dec.

*99

90

95

139

166

131

94

85

87

77

72

79

72

73

74

68 

66

66

70

56

52

56

59

56

66

64

62

55

54 

53

43

2,379

76.7

12.7

Jan.

42

41

53

52

*53

51

47

42

134

556

270

242

250

145

98

92 

84

68

60

65

55

47

54

50

49

46

49

41

29 

40

58

2,701

87.1

15.8

Feb.

35

35

36

32

52

38

39

38

*39

39

36

36

41

38

42

49 

41

56

52

43

58

54

56

57

58

116

116

90

70

1,552

46.6

13.1

Mar.

55

56

76

79

68

57

215

157

112

85

65

79

74

70

*64

55 

49

47

56

56

70

92

100

100

87

93

88

87

85

82

2,540

81.9

13.2

Apr.

74

90

112

149

521

420

409

208

196

183

257

289

519

508

546

686 

1,070

*626

472

545

302

476

476

319

280

308

275

620

917 

1,150

11,965

399

13.2

May

648

452

425

400

369

300

260

207

177

218

228

181

181

169

135

151 

127

119

118

106

98

92

90

92

76

69

87

*111

85 

129

225

6,085

196

15.4

June

230

156

335

280

169

126

104

89

75

74

106

79

64

56

56

49 

46

47

46

44

45

48

38

39

47

56

38

45

51

2_1

2,619

87.5

14.0

July

22

28

*25

14

28

40

32

26

29

28

25

24

30

91

67

44 

38

36

27

30

31

31

*26

29

63

47

33

29

25 

25

22

I r 045

3T.7

12.0

Aug.

21

21

19

19

18

19

19

15

16

19

18

16

20

24

29

19 

28

16

16

21

22

28

21

22

19

15

20

19

*20 

30

30

639

20.6

11.7

Sept.

29

92

171

80

41

34

33

28

25

25

21

30

39

39

29

88 

120

103

59

66

62

44

45

351

202

87

60

56

56 

47

2,142

71.4

11.7

Adjusted for diversion

Mean 

Cfsm 

In.

328 

5 4 74 

6.63

289 

5.06 

5.65

Calendar year 1955: 

Water year 1955-56:

89.5 

1.57 

1.81

101 

1.77 

2.04

59.8 

1.05 

1.15

95.1 

1.67 

1.92

412 

7.22 

8.05

210 

5.68 

4.23

Observed

Max 1,800 Mln 10 Mean 155 

Max 1,800 Mln 14 Mean 141

101 45.7 32.3 

1.77 0.800 0.566 

1.98 0.92 0.65

83.1 

1.46 

1.62

Adjusted

Mean 147 cfsm 2.57 In. 34.86 

Mean 154 cfsm 2.70 j n . 36.63

Peak discharge (base. 1.150 cfs). Oct. 16 (7 a.m.) 2,010 cfs (7.18 ft); Apr. 16 (10:50 p.m.) 

1,500 Cfs (6.07 ft); Apr. 30 (2:30 p.m.) 1,220 cfs (5.93 ft).

* Discharge measurement made on this day.

t Diversion above station, equivalent In cubic feet per second, from Cleveland Brook Reservoir for 

municipal supply of Pittsfleld. Records furnished by city of Pittsfleld.
HOUSATONIC RIVER BASIN

Housatonic River near Great Barrington, Mass.

Location. Lat 42°13'55", long 73°21'19", on left bank at upstream side of highway bridge 

at Van Deusenville, 0.5 mile upstream from Williams River and 2 miles nortt of Great 

Barrington, Berkshire County.

Drainage area.--280 sq mi.

Records available. Nay 1913 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 683.04 ft above msan sea level, datum of 

1929. Prior to Oct. 1, 1931, staff gage at sams site and datum.

Average discharge.--43 years, 534 cfs.

Extremes. Maximum discharge Juring year, 4,410 cfs Apr. 17 (gage height, 8.51 ft); minimum daily, 54 cfs July 5.

1913-56: Maximum discharge, 12,200 cfs Jan. 1, 1949 (gage height, 12.0? ft), from 

rating curve extended above 5,303 cfs on basis of computations of flow over dams at 

gage heights 11.72 and 12.08 ft; minimum daily, 1.0 ofs Oct. 18, 1914.

Remarks.--Records good except those for periods of ice effect, which are fair. Plow regulated by puw-jrplants above station.

Revisions (water years).--WSP 415: 1913 calendar year. WSP 781: 1928(M). WSP 1051: 

1928, 1933. WSP 1301: 1914-15(M) , 1917-27(M) , 1929-31{M).

Rating table, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

3.5

48

97

309

407

4.0 

5.0 

7.0 

9.0

735

1,500

3,870

5,050

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

35

26

37

28

29

30 

31

Total

Mean

Cfsm

In.

Oct.

342

206

383

335

170

348

938

1,180

1,090

875

600

434

369

365

1,040

3,880

4,090

3,370

3,440

1,800

1,430

1,140

933

874

970

986

*874

728

645 

638

1,420

33,371

1,076

3.84

4.43

Nov.

1,710

1,450

1,110

1,160

1,960

3.330

3,210

1,920

1,660

1,430

1,350

1,430

1,370

1,740

3,240

3,190

3,050

1,790

1,540

1,380

1,150

1,030

922

874

883

803

630

682

638 

578

43,078

1,403

5.01

5.59

Dec.

*532

507

460

549

772

675

545

490

439

439

346

439

 389

347

433

337

347

311

384

309

367

356

374

265

317

b300

b320

287

373 

356

333

13,086

390

1.39

1.61

Jan.

b235

b330

387

383

*294

349

337

199

293

830

1.160

1,050

1,060

836

531

503

449

374

334

336

336

355

333

369

285

348

269

242

194 

394

264

12,696

410

1.46

1.69

Feb.

356

337

234

230

189

373

345

243

*348

333

336

331

316

286

259

380

360

363

214

383

b230

b22O

b330

304

383

653

719

533

398

8,463

393

1.04

1.12

Mar.

356

330

467

653

634

464

910

1,550

1,010

743

550

700

592

557

516

*b450

b410

b400

484

434

414

449

475

533

407

488

439

404

441 

379

378

16,794

542

1.94

3.33

Apr.

356

438

510

833

1,590

3,190

1,930

3,350

3,970

3,010

3,810

3,600

3,300

1,930

1,860

3,440

4,180

3,930

*3,100

3,540

3,040

1,790

3,010

3,OOO

1,770

1,600

1,530

1,660

3,930 

3,690

64,856

3,163

7.73

8.61

May

3.400

3,700

3,340

1,890

1,730

1,500

1,340

1,170

1,030

1,000

1,140

1,030

883

866

843

78O

750

730

690

533

515

495

385

461

407

347

309

*463

399 

360

476

30,839

995

3.55

4.10

June

608

668

750

1,070

1,000

803

660

559

478

333

436

406

433

400

334

334

310

301

319

391

374

386

378

178

335

189

*176

194

183 

160

13,434

414

1.48

1.65

July

160

343

137

136

$*.

304

332

194

176

143

156

158

151

354

301

"330 330

304

187

140

144

89

334

163

157

312

300

143

108 

176

143

5,518

178

0.636

0.73

Aug.

144

116

139

113

66

154

141

111

92

93

95

70

123

114

135

93

85

93

75

103

130

134

94

91

101

65

67

116

*133 

143

144

3,338

107

0.383

0.44

Sept.

150

95

344

384

336

148

153

134

131

138

153

99

91

137

135

146

365

340

307

333

336

333

131

664

834

533

369

390

380 

215

7,580

353

0.904

1.01

Calendar year 1955: Max 4,190 Min 51 Mean 657 Cfsm 3.35 In. 31.87

Water year 1955-5G: Max 4,180 Min 54 Mean 683 Cfsm 2.44 In. 33.21

Peak discharge (base, 2.400 efs).--0ct. 17 (7 a.m.) 4,33O cfs (8.43 ft); Nov. 7 (7:30 a.m.) 2,470 

cfs (6.43 ft); . 12m.) 3,360 cfs (7.46 ft); Apr. 17 (8:30 a.m.) 4,410 cfs (8.51 ft); Apr. 30

(3 p.m.) 3,930 cfs (8.10 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ic
236 HOUSATONIC RIVER BASIN

Green River near Great Barrington, Mass.

Location. Lat 42"11 "31", long 73°23'28", on left bank 250 ft downstream from Seekonk Road 

Highway bridge, 0.2 mile downstream from Seekonk Brook, 1? miles v st of Great Barrington, Berkshire County, and 3 miles upstream from mouth.

Drainage area. 52.5 sq mi.

Records available. October 1951 to September 1956.

Gage.--Water-stage recorder. Altitude of gage is 690 ft (from topographic map).

Average discharge. 5 years, 97.5 cfs.

Extremes.--Maximum discharge during year, 1,790 cfs Apr. 17 (gage height, 7.65 ft), from 

rating curve extended above 680 cfs; minimum, 4.7 cfs Aug. 23-28, Sept. 9-15.

1951-56: Maximum discharge, that of Apr. 17, 1956; minimum, 3.0 cfs Sept. 2-5, 

1953 (corrected).

Correction. The date of the minimum discharge has been corrected to Sept. 2-5, 

1953, superseding date published in WSP 1331 and 1381.

Remarks.--Records good except those for periods of ice effect or no gage-height record, 

which are fair.

Rating tables, water year 1955-56, except periods or ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

2.2

2.5 

3.0

Oct. 1 to Apr. 16

4.0 390

6.0 1,130

Apr. 17 to Sept. 30

2.08 

2.2 

2.4 

2.7

4.7

12

82

3.0 142

4.0 390

6.0 1,130

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

IS

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cf sin

In.

Oct.

27

25

23

22

22

63

129

181

163

119

a96

a82

a72

a74

146

4O9

515

333

363

295

242

205

181

174

216

172

*150

138

127

218

575

5,557

179

3.41

3.94

Nov.

333

268

230

320

452

402

354

351

300

265

328

308

275

381

325

322

318

252

223

203

183

172

157

146

132

119

109

103

93

82_

7,486

250

4.76

5.30

Dec.

*75

71

71

99

101

86

69

66

60

56

55

54

50

47

45

44

43

42

41

38

37

36

35

34

37

34

33

34

2929"

29

1,580

51.0

0.971

1.12

Jan.

27

26

28

27

*25

25

24

22

36

144

111

115

129

90

75

66

60

47

45

43

39

37

36

36

34

34

31

30

29

33

32

1,536

49.5

0.943

1.09

Feb.

31

30

28

27

28

27

30

27

*27

27

27

36

39

37

38

43

36

36

35

33

29

28

32

30

106

180

103

80

60

1,290

44.5

0.848

0.91

Mar.

52

54

120

172

121

97

295

265

200

155

144

165

136

132

*113

97

95

97

84

82

75

73

75

78

77

68

64

61

61

60

56

3,424

110

2.10

2.43

Apr.

56

69

119

203

564

600

532

375

322

375

426

480

477

441

456

915

1,060

a600

*a450

357

300

305

312

288

260

252

£40

260

453

*512

12,059

402

7.66

8.54

May

*354

298

305

260

240

209

194

170

155

183

155

140

138

125

117

109

105

103

97

92

82

75

75

73

64

58

61

*66

58

56

56

4,273

138

2.63

3.03

June

54

58

~9^ 105

73

64

58

51

48

51

64

48

41

40

34

33

27

31

25

23

23

20

14

17

17

14

*17

20

17

16

1,193

39.8

0.758

0.85

July

13

12

11

10

18

30

22

18

16

13

12

11

16

37

2T

20

18

16

13

12

14

17

16

13

12

*11

11

10

8.8

8.8

8.2

473.8

15.3

0.291

0.34

Aug.

8.2

776

7.6

7.0

7.0

7.0

7.0

6.5

6.0

7.0

7.0

6.5

6.0

6.0

5.6

5.6

5.1

5.6

6.5

p .O

5.6

5.6

5.1

4.7

4.7

4.7

4.7

5.1

*5.6

5.1

5.1

186.8

6.03

0.115'

0.13

Sept.

5.6

6.0

6.0

5.6

5.1

5.6

6.5

5.6

5.1

4.7

4.7

4.7

4.7

4.7

4.7

7.0

7.0

7.0

6.5

7.0

7.0

7.0

7.6

77

44

31

23

21

22

20

373.4

12.4

0.236

0.26

Calendar year 1955: Max 575 Min 4.7 Mean 101 Cfsm 1.92 In. 26.07

Water year 1955-56: Max 1,060 Min 4.7 Mean 108 Cfsm 2.06 In. 27.94

Peak discharge (base, 750 cfs). Oct. 31 (3:30 a.m.) 810 cfs (5.20 ft); Apr. 5 (7:30 p.n 

(5.56 ft); AprT 17 (12:30 a.m.) 1,790 cfs (7.65 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement, weathe 

recorded range in stage when available, and records for Green River at williamstown.

Note.--Stage-discharge relation affected'by ice Dec. 19-24, Dec. 26 to Jan. 2, Jan. 7-9, 

21, 24-26, 31, Feb. 1, 4, 18, 21-24, 26, 29, Mar. 1, 3, 16-21, 25.

. ) 954 cfs

r records, 

18, 19,
HOUSATONIC RIVER BASIN 237

Blackberry River at Canaan, Conn.

Locution. Lat 42"01'26", long 73°20'32", on right bank downstream from highway bridge on 

U.S. Highway 44, 0.7 mile southwest of Canaan, Litchfield County, and 1-f miles upstream from mouth.

Drainage area.--48.2 sq ml.

Records available . July 1949 to September 1956.

Gage. Water-stage recorder. Datum of gage is 645.72 ft above mean sea level, datum of

1929.

Average discharge.--? years, 93.5 cfs.

Extremes.--Maximum discharge during year, 2,830 cfs Oct. 16 (gage height, 9.12 ft); minimum, 6.6 cfs Aug. 18 (gage height, 1.49 ft).

1949-56: Maximum discharge, 14,200 cfs Aug. 19, 1955 (gage height, 13.01 ft), from 

rating curve extended above 2,400 cfs on basis of slope-area determination of peak 

flow; minimum, 2.2 cfs Aug. 28, 1949 (gage height, 1.12 ft); minimum daily, 2.3 cfs 

Aug. 28, 1949.

Flood of Dec. 31, 1948, reached a stage of 12.0 ft, from floodmarks (discharge, 

7,000 cfs, from slope-area determination at East Canaan, 2.5 miles upstream, adjusted 

for intervening drainage area).

Remarks.--Records good. Infrequent regulation at low flow.

Rating tables, water year 1955-56, except periods of ice effect (gage height, In feet,

and discharge. In cubic feet per second) 

(Backwater from sand on control June 28, 29)

Oct. 16 to Apr. 4

2.2 

2.5 

3.0 

4.0

6.0 

7.0 

8.0 

9.0

760

1,190

1,790

2,690 130

305

5.0 

6.0 

7.0 

8.0 

9.0

505

770

1,190

1,790

2,690

Apr. 5 to Sept. 30

1.5 6.8 3.0 142 

1.7 13 4.0 305 

2.0 34

Wote.--Same as preceding table above 4.0 ft.

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15*

16

17

18

19

0

-L

2

3

4

5

e

7

8

29

30

31

Tot a:

Mean

Cfsm

In.

Oct.

54

43

35

31

I±L

96

*204

209

148

90

67

55

48

91

*1,830

2,290

1,170

546

572

405

273

199

164

162

215

164

133

116

107

291 

1,000

10,837

350

7.26

8.37

Nov.

355

217

172

622

820

542

385

325

239

194

458

335

251

414

305

297

281

194

163

*150

138

126

115

122

108

100

91

91

79

!2_

7,761

259

5.37

5.99

Dec.

71

68

74

107

127

99

69

64

61

56

b52

b50

b45

43

46

40

*43

42

40

b27

b29

b27

b28

b30

b39

b34

30

27

25

b25 

b25

1,543

49.8

1.03

1.19

Jan.

b25

b23

b23

b25

b27

b27

b26

b25

b50

445

277

345

247

100

80

65

53

38

36

37

33

33

b30

b29

b27

b25

b25

b24

b23

b46 

52

2,321

74.9

1.55

1.79

r 

Feb.

b35

36

34

30

32

30

35

38

38

40

43

54

77

52

78

69

44

42

45

40

b31

b30

*b29

b30

540

272

106

83

b67

1,880

64.8

1.34

1.44

Mar.

b55

78

104

129

85

76

258

150

bllO

b78

'92

124

84

79

b70

b55

b70

b62

b54

b56

b50

b55

*b62

b75

b65

b56

56

52

52

55 

52

2,499

80.6

1.67

1.92

Apr.

54

m

123

357

632

505

495

345

215

292

306

340

358

352

345

690

540

465

365

257

218

263

325

226

210

216

200

290

750

847

10,650

355

7.37

tl.22

May

395

54T

261

202

166

145

135

121

110

121

121

110

105

101

96

92

88

84

88

90

82

75

72

73

68

63

65

78

73

57

3,642

117

2.43

2.80

June

103

110

254

146

105

86

74

66

60

61

76

62

53

49

50

42

38

35

32

30

31

32

29

31

28

25

25

22

18

11

1,790

59.7

1.24

1.38

July

15

14

13

12

46

93

56

34

39

31

22

18

20

72

58

32

27

*20

17

15

21

32

24

18

15

15

15

14

12

11 

10

841

27.1

0.562

0.65

Aug.

9.9

9.6

.9.0

8.8

8.5

8.2

8.2

7.9

7.6

7.4

9.0

9.0

8.2

9.6

9.0

8.2

7.4

7.1

16

11

10

11

9.6

9.0

8.5

7.9

7.4

6.8

678

*7.1

273.3

8.82

0.183

0.21

Sept.

11

15

16

10

8.8

11

38

17

11

9.6

8.5

8.5

8.5

7.6

776

16

20

30

18

18

20

13

12

82

4Z

23

18

23

22

18

563.1

18.8

0.390

0.44

Calendar year 1955: Max 6,220 Min 3.4 Mean 140 Cfsm 2.90 In. 39.50

Water year 1955-56: Max 2,290 [tin 6.8 Mean 122 Cfsm 2.53 In. 34.40

Peak discharge (base, 800 efs).--0ct. 16 (9 a. 

(7.74 ft); Nov7 4 (8 p.m.) 1,240 cfs {7.10 ft). 

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

i. ) 2,830 cfs (9.12 ft); Oct. 31 (3 a.m.) 1,610 cfs
238 HOUSATONIC RIVER BASIN

Housatonic River at Palls Village, Conn.

Location. Lat 41°56'56", long 73°22'05", on left bank 0.6 mile downstream from hydroelectric plant of Connecticut Power Co. at Palls Village, Litchfield County, 2 miles downstream from Hollenbeck River, and at mile 75.3.

Drainage area.--632 sq mi.

Records available.--July 1912 to September 1956.'

Gage. Water-stage recorder. Datum of gage is 522.34 ft above mean sea level, datum of 

- 1929 (levels by Corps of Engineers).

Average discharge.--44 years, 1,086 ofs.

Extremes. Maximum discharge during year, 8,940 cfs Oct. 16 (gage height, 13.2 ft, from 

powerplant data); minimum, 31 cfs Sept. 17; minimum daily, 130 cfs Aug. 12, 18, 28. 

1912-56: Maximum discharge, 23,900 cfs Jan. 1, 1949 (gage height, 22.9 ft, from 

floodmarks); practically no flow at times when powerplant was shut down; minimum daily 

discharge, 24 cfs Oct. 15, 1914, Sept. 18, 1932.

Remarks. Records excellent except those for periods of ice effect, which are good. Low 

flow completely regulated by powerplant of Connecticut Power Co. Records of chemical 

analyses and water temperatures for the water year 1956 are given in WSP 1450.

Revisions. WSP 781: Drainage area.

Rating tables, water year 1955-56, except periods of Ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1 to Sept. 30

2.1 

3.0 

5.0

515

950

3,080

3,420

5,750

1.0 

1.5 

3.0

133

252

955

5.0 2,050

8.0 4,100

13.0 8,700

Note.--Same as following 

table above 10.0 ft.

Discharge ubic feet per second, water year October 1955 to Septembe

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

659

615

590

555

551

612

1,450

1,880

2,300

*2,040

1,670

1,250

1,030

924

3,360

7,650

8,090

7,400

6,540

5,510

4,150

3,190

2,490

2,170

2,280

2,280

2,090

1,950

1,690

1,600 

3,810

82,376

2,657

4.20

4.84

Nov.

4,180

3,560

2,930

3,070

5,300

5,300

5,060

4,580

4,100

*3,490

3,630

3,860

3,490

3,560

4,100

4,180

4,260

3,860

3,420

3,000

2,590

2,350

2,170

2,050

1,930

1,820

1,700

1,540

1,460

1,540

97,880

3,263

5.16

5.76

Dec.

1,280

1,210

1,170

1,250

1,540

1.590

1,340

1,170

1,070

992

924

813

902

801

808

800

680

740

660

540

390

500

480

540

610

620

540

530

480

500 

470

25,940

837

1.32

1.52

Jan.

430

400

430

530

520

500

450

300

530

1,380

1,690

1,350

1,900

1,700

1,440

1,120

980

790

620

804

640

610

550

580

530

520

506

536

320

476

23,922

772

1.22

1.41

Feb.

500

420

610

280

600

280

640

538

419

622

392

838

786

750

742

800

555

776

600

526

564

431

516

440

840

1,640

1,630

1,460

1,040

20,235

698

1.10

1.19

Mar.

873

838

1,020

1,550

1,600

1,380

1,700

2,530

2,530

1,990

1,700

1,580

.*1,610

1,400

1,330

1,140

948

1,130

1,040

1,020

1,050

954

1,040

1,070

1,030

968

998

953

910

954 

875

39,711

1,281

2.03

2.34

Apr.

854

911

1,290

1,760

3,350

4,900

5,570

5,220

4,340

3,630

3,700

4,020

4,420

4,500

4,500

5,390

7,710

8,590

7,820

6,200

4,980

4,260

4,020

4,020

3,780

3,490

3,210

3,210

4,420

6,380

130,445

4,348

6.88

7.68

May

6,650

5,930

5,060

4,260

3,560

3,140

2,790

2,470

2,170

2,050

2,170

2,050

1,930

1,740

1,660

1,530

1,460

1,390

1,410

1,320

1,180

1,080

984

990

960

864

794

848

935

762

64,950

2,095

3.31

3.82

June

1,000

1,170

1,500

,760

,590

,430

,220

,030

936

836

820

828

782

703

675

628

502

388

544

340

462

446

458

433

341

358

314

338

332

298

22,462

749

1.19

1.33

July

275

252

316

246

297

493

580

396

388

348

298

277

320

590

601

580

496

355

348

314

294

321

293

391

289

£86

318

316

208

210 

270

10,966

354

0.560

0.65

Aug.

188

208

197

200

180

168

212

206

186

147

234

130

148

199

180

204

159

130

215

*184

158

325

336

188

170

170

158

130

170

185 

200

5,865

189

0.299

. 0.34

Sept.

237

228

234

336

450

328

310

285

240

217

206

211

188

165

192

217

179

477

444

463

355

355

305

445

1,040

1,000

770

486

427

479

11,269

376

0.595

0.66

Calendar year 1955: Max 17,000 Win 144 Mean 1,534 Cfsm 2.43 In. 32.93

Water year 1955-56: Max 8,590 Mln 130 Mean 1,465 Cfsm 2.32 In. 31.54

Featc discharge jbase, 5.6OO cfsJ.--Oct. 16 (9 p.m.) 8,940 cfs (15.2 ft); Oct. 31 (7 p.m.) 4,620- 

cfs (8.G1 ft); Nov. 5 (3:30 p.m.) 5,570 cfs (9.75 ft); Nov. 12 (1 a.m.) 3,940 cfs (7.84 ft); Nov. 17 

(9:30 a.m.) 4.340 cfs (8.28 fb): Apr. 7 (5 and 10 p.m.) 5,750 cfs (9.96 ft); Apr. la (12 m.) 8,700 

cfs (12.96 ft); Apr, 30 (6 p.m.) 6,740 cfs (11.13 ft). 

* nisnharffe mp.asur'pfnpnt marip nn this rtav .

Peak discharge (base. 5.600 cfs) .--

, .. ,

Discharge measurement made on this day. 

Note.--Stage-discharge relation affected by ice Dec. 

24-26.

17 to Jan. 19, Jan. 20-26, 51, Feb. 1-7,
HOUSATONIC RIVER BASIN 239

Tenmile River near Gaylordsville, Conn.

Location. Lat 41°39'32", long 73°31'44", on right bank 0.1 mile downstream from Deuel 

Hollow Brook, 1.2 miles upstream from Connecticut-New York State line, 1.7 miles upstream from mouth, and 2j miles northwest of Gaylordsville, Litchfield Courty.

Drainage area. 204 sq mi.

Records available.--October 1929 to September 1956. Monthly discharge only fcr October 

to December 1929, published in WSP 1301.

Gage_. Water-stage recorder. Datum of gage is 304.4 ft above mean sea level, datum of 

1929 (levels by Connecticut Light & Power Co.).

Average discharge. 27 years, 302 cfs.

Extremes. Maximum discharge during year, 8,960 cfs Oct. 16 (gage height, 10.95 ft); minimum, 23 cfs Aug. 19, 20, 30, 31 (gage height, 0.77 ft); minimum daily, 24 cfs Aug. 19, 

20, 30.

1929-56: Maximum discharge, 17,400 cfs Aug. 19, 1955 (gage height, 14.9 ft, from 

high-water mark) , from rating curve extended above 9,800 cfs by logarithmic plotting; 

minimum, 8 cfs Sept. 24, 26, 1939 (gage height, 0.52 ft); minimum daily, 9 cfs Sept. 23- 

26, 1939.

Remarks. --Records good except those for periods of ice effect or no gage-height record, 

which are fair. Infrequent regulation at low flow. Records of chemical analyses and 

water temperatures for the water year 1956 are given in WSP 1450.

Revisions (water years).--WSF 1201: 1939.

Rating table, water year 1955-56, except periods of ice effect (gage 

height, in feet, and discharge, in cubic feet per second)

1.0 

1.5

21

30

52

135

Discharge, in cubic

3.0 600

4.0 1,070

6.0 2,390

8.0 4,400

10.0 7,400

;ar October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

2C

27

28

29

30 

31

Total

Mean

Cfsm

In.

faler

Wate

Oct.

137

168

146

129

121

142

307

325

350

277

237

222

190

215

1,960

7,510

4,000

3,090

2,340

2,040

1,470

1,180

1,000

890

845

744

672

600

548

685

1,600

34,990

1,129

5.53

6.38

idar yeai

" year 1

Nov.

1,400

1,050

870

1,400

2,600

1,950

1,550

1,300

1,150

1,000

1,500

1,500

1,100

1,350

1,400

1 , 300

1,350

1,050

900

 800

750

700

650

600

560

520

480

440

420

37C

32,010

1,067

5.23

5.84

1955: H

955-56: f

Dec.

350

330

330

380

430

370

310

280

250

230

220

200

190

180

180

170

140

150

150

110

110

115

110

120

130

125

110

105

100

100

95

6, 170

199

0.975

1.12

lax 10,

lax 7,

Jan.

100

90

95

95

95

95

90

70

105

460

461

435

492

356

274

245

216

150

155

160

130

120

110

100

110

110

105

100

95

150

288

5,657

182

0.892

1.03

700 H

310 I

Feb.

192

178

199

159

168

150

209

250

- 242

296

362

953

845

*512

496

600

362

450

540

508

396

274

252

212

636

1,450

685

532

353

12,461

430

2.11

2.28

din 12

<Iin 24

Mar.

296

304

552

685

572

472

788

1,260

1,020

730

685

798

55C

488

453

406

302

362

356

331

316

313

331

350

296

322

325

353

375

362

346

15,105

487

2.39

2.76

Mes

Kes

Apr.

370

600

1,050

1,350

2,150

,510

,900

,530

,200

,260

,150

,050

950

850

800

1,350

1,650

1,150

1,000

850

750

650

800

750

600

650

600

550

700

1,200

31,970

1,066

5.23

5.84

n 487

n 449

May

1,020

845

920

798

708

640

662

584

516

492

453

410

389

356

359

328

307

313

319

296

271

255

242

245

224

209

212

232

212

190

190

13,197

426

2.09

2.41

Cfsr

Cfsr

June

316

396

620

536

399

328

282

247

229

232

263

229

204

175

153

135

127

121

108

99

94

97

94

92

89

81

84

94

87

8C

6,091

203

0.995

1.11

n 2.39

n 2.20

July

70

66

62

56

82

212

212

157

187

175

135

110

150

230

190

150

117

97

84

75

84

101

94

84

75

69

65

65

60

56

52

3,422

110

0.539

0.62

In. 3

In. 2

Aug.

50

47

44

40

38

*37

37

36

34

31

31

30

29

30

28

27

26

25

24

24

30

34

38

33

33

30

27

25

25

24

25

992

32.0

0.157

0.18

2.43

3.95

Sept.

27

35

63

50

39

78

137

153

102

80

60

48

40

35

33

37

50

70

69

60

60

53

48

106

*127

89

72

74

114

81

2,090

69.7

0.342

0.38

Peak discharge (base, 1,400 cfs).--0cj,. 16 (7 a.m.) 8,960 cfs (10.95 ft); Oct. 31 (about 3 p.m.) 

about 1,800 cfs; Nov. 5 (about 8 a.m.) about 2,700 cfs; Apr. 6 (8 a.m.) 2,970 cfs (6.72 ft).

* Discharge measurement made on this day.

Note.--No gage-height record Oct. 31 to Dec. 19, Apr. 1-4, 11-29, July 12-16; discharge estimated 

on basis of existing record, recorded range In stage, weather records, and records for nearby 

streams. Stage-discharge relation affected by ice Dec. 20 to Jan. 10, Jan. 18-30.
HOUSATONIC RIVER BASIN

Housatonlc River at Gaylordsville, Conn.

Location. Lat 41°39'11", long 73°29'25", on left bank 0.4 mile downstream from hydroelectric plant of Connecticut Light & Power Co., 0.5 mile upstream froir bridge on U. S. 

Highway 7 at Gaylordsville, Litchfield County ij miles downstream from Tenmile River, 

and at mile 50.6.

Drainage area.--994 sq mi.

Records available.--October 1900 to December 1904 (fragmentary), January 1905 to December 

1908 (gage heights only), January 1909 to December 1912 (fragmentary), January 1913 to 

October 1914 (gage heights only), November 1914 (fragmentary), July 19*0 to September

Gage.--Water-stage recorder. Datum of gage Is 236.78 ft above mean sea level, datum of 

1929. October 1900 to November 1914, chain gage on covered bridge 0.6 mile downstream 

at different datum.

Average discharge.--16 years (1940-56), 1,713 cfs.

Extremes.--Maximum discharge during year, 21,600 cfs Oct. 16 (gage height, 12.45 ft); minimum daily, 168 cfs Aug. 19.

1900-1914, 1940-56: Maximum discharge, 51,800 cfs Aug. 19, 1955 (gage height, 18.58 

ft); minimum observed, about 30 cfs Oct. 28, 1914 (gage height, 2.18 ft, site and datum 

then in use); minimum daily since July 1940, about 60 cfs Aug. 31, 1944, Sept. 20, 

1949.

Flood of May 1854 reached a stage of 21 ft 3 in., former site and datum; reported by 

observer In 1902. Flood of Sept. 22, 1938, reached a stage of 14.5 ft, from floodmarks, at present site (discharge, 37,000 cfs, by computation of peak flow over dam 

2o miles upstream adjusted for flow from intervening area).

Remarks,--Records good. Ordinary flow regulated by powerplants above station.

Revisions (water years ). WSP 1301: 1949.

Rating table, water year 1955-56, except periods of Ice effect (ga^e 

height, In feet, and discharge, In cubic feet per second)

3.0

155

236

447

710

1,050

4.0

5.0

7.0

10.0

12.0

1,940

3,120

6,380

13,500

19,900

Discharge, In cubic feet per second, water year October 1955 to Septemter 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

51

Total

Mean

Cfsm

In.

Oct.

1,020

964

797

689

754

830

1,760

2,450

2,810

*2,560

2,190

1,640

1,430

1,340

7,130

19,100

16,200

12,200

10,200

8,670

6,650

5,200

4,230

3,680

3,670

3,530

3,200

2,940

2,600

2,760

6,520

159,514

4,500

4.53

5.22

Nov.

6,580

3,270

4,600

4,930

$,670

8,450

7,590

6,970

6,000

5,300

6,200

6,400

5,300

5,600

6,400

6,400

6,400

5,600

5,100

4,600

4,000

3,600

3,200

3,000

2,900

2,700

2,400

*2,400

2,270

2.100

150,730

5,024

5.05

1 5.63

Dec.

1,940

1,890

1,840

1,940

2.520

2,320

1,970

1,760

1,670

1,510

1,440

1,350

1,500

1,240

1,250

1,170

1,150

1,110

1,130

b960

b790

b740

b940

896

1,000

bl,010

b940

b870

819

814

b810

40,869

1,318

1.33

1.53

Jan.

728

b720

688

684

814

b750

b780

b740

b780

bl,920

2,560

2,800

5.120

2,680

2,100

1,690

1,460

1,290

1,160

1,050

bl,100

b910

908

bB30

b850

b770

b790

b730

b770

783

1,140

38,095

1,229

1.24

1.43

Feb.

bl,020

886

908

b820

714

b870

762

1,070

988

1,010

1,170

1,650

2,010

1,610

1,510

1,760

1,390

1,370

1,500

1,370

1,170

b990

b890

*b900

1,520

5,620

2,680

2,380

1,740

_-_-_._

------

40,478

1,596

1.40

1.51

Mar.

1,420

1,420

1,790

2,560

2,620

2,320

2,860

4.260

4,120

3,250

2,860

2,860

2,560

2,320

2,100

1,900

1,600

1,820

1,760

1,610

1,700

1,660

1,640

1,780

1,680

1,630

1,650

1,650

*1,600

1,600

1,550

06,150

2,154

2.15

2.48

Apr.

1,550

1,740

2,680

3,600

6,380

8,890

9,120

8,010

6,570

6,000

6,190

6,380

6,570

6,570

6,570

8,450

11.500

11,300

10,300

8,230

6,970

5,810

5,630

5,t.30

5,270

4,930

4,600

4,280

5,450

8,450

193,420

6,447

6.49

7.24

May

8,670

7,800

7,170

6,000

5,100

4,600

4,120

3,670

3,180

2,990

5,060

2,920

2,740

2,500

2,440

2,220

2,160

2,050

2,100

2,000

1,790

1,670

1,540

1,490

1,510

1,390

1.270

1,390

1,430

1,280

1,280

93,530

3,017

5.04

3.50

June

1,690

1,940

2,860

2.920

2,500

2,220

1,890

. 1,650

1,500

1,430

1,400

1,360

1,260

1,210

1,060

982

987

682

788

666

702

748

746

743

600

520

595

568

535

465

57,215

1,240

1.25

1.40

July

469

434

476

352

618

902

971

814

856

768

497

556

436

860

1,200

860

816

634

548

488

474

544

538

496

528

410

449

498

428

556

502

18,558

599

0.603

0.70

Aug.

426

211

350

285

298

287

244

301

300

274

214

326

228

242

299

230

298

264

168

362

208

240

547

E94

307

226

204

244

174

196

331

8,658

279

0.281

0.32

Sept.

510

356

557

377

572

677

706

606

387

328

301

326

317

280

262

311

379

414

651

628

582

458

468

724

*945

1.190

1,080

868

719

580

16,159

539

0.542

0.60

Calendar year 1955: Max 38,800 Mln 145 Mean 2,436 Cfsm 2.45 In. 53.26

Water year 1955-56: Max 19,100 Mln 168 Mean 2,504 Cfsm 2.32 In. 31.56

Discharge measurement 

b Sta^e-discharge relati 

N

bals

str

uiscnarge measurement maae on tnis aay. 

i Sta^e-discharge relation affectea by ice.

late.--No gage-height record Oct. 15-19, Nov. 10-28; discharge estimated from reconstructed graph 

ied on thrice-daily gage-height readings at tallrace of Bulls Bridge powerplant immediately up- 

'eam. t
HOUSATONIC RIVER BASIN 

Still River near Lanesvllle, Conn.

241

Location. Lat 41°31'12", long 73°25'07", on left bank at upstream side of highly bridge, 

a quarter of a mile east of U. S. Highway 7, l.l miles south of Lanesvllle, Litchfleld 

County, 3 miles upstream from mouth, and 4 miles south of New Mllford.

Drainage area. 68.5 sq ml.

Records available.--October 1931 to September 1956.

Gage. Water-stage recorder. Datum of gage is 213.05 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers).

Average discharge.--25 years, 124 cfs.

Extremes.--Maximum discharge during year, 7,980 cfs Oct. 16 (gage height, 14.11 ft, from 

high-water marks in well), from rating curve extended above 3,000 cfs by logarithmic 

plotting; minimum, 21 cfs Aug. 26, 27, Sept. 10; minimum daily, 21 cfs Aug. 27; minimum gage height, 1.50 ft June 25.

1931-56: Maximum discharge, that of Oct. 16, 1955; minimum, 5 cfs Oct. 2"), 1946; 

minimum daily, 8 cfs Sept. 27, 1948; minimum gage height, 0.77 ft Aug. 10, 1939.

Remarks. Records good except those for periods of no gage-height record, ice effect, or 

backwater from aquatic vegetation, which are fair. Some diurnal fluctuation caused by 

mills at Brookfield and Danbury.

Rr-is ions (water years1.--WSP 781: Drainage area. WSP 801: 1931-35. WSP 851: 1936. 

WSF 871: 1938.ffsTlOSl: 1944. WSP 1081: 1946. WSP 1301: 1944(M). WSP 1331- 

1936(M), 1938(M), 1941(M).

Rating table, water year 1955-56, except periods of Ice effect or backwater from aquatic 

vegetation (gage height, In feet, and discharge, In cubic feet per second)

1.2 

1.5 

2.0 

3.0

52

105

4.0 

5.0 

6.0 

7.0

1S2 

283 

406 

609

8.0

9.0

11.0

13.0

1,120

1,820

3,720

6,280

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

1314*

15

16

17

18

19

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

Cf sm

In.

Oct.

81

74

62

58

54

6(5

176

174

147

101

82

74

68

91

746

6.120

*3,700

1,670

1,070

790

613

511

434

362

346

324 

275

239

218

277

898

19,901

642

9.37

10.80

Nov.

a885

a550

458

480

1.450

1,120

830

S27

536

466

a550

3450

a400

a500

3420

aSOO

a600

3500

3420

3380

341

3310

3280

3260

3240

3220 

3210

a200

*186

164

14,533

484

7.07

7.89

Dec.

156

144

152

173

200

182

148

128

122

a!15

allO

a 105

99

93

a90

392

a85

380

a82

a75

SB

60

60

62

65

70 

62

60

58

56

54

3,106

100

1.46

1.68

Jan.

50

45

50

55

60

60

55

55

88

240

191

220

288

196

125

105

102

90

82

75

70

65

60

56

53

50 

48

46

44

70

186

2,980

96.1

1.40

1.61

Feb.

108

92

2T2

159

108

128

233

*379

215

152

144

220

220

148

128

136

114

154

317

266

186

132

114

105

145

311 

196

152

140

5,174

178

2.60

2.80

Mar.

il§

118

156

160

160

144

235

323

372

305

215

196

182

178

235

245

173

191

164

160

160

164

182

215

200

182 

196

215

*205

191

225

6,165

199

2.91

3.36

Apr.

240

283

347

392

392

399

379

379

406

455

420

353

288

250

230

283

347

294

230

200

186

168

164

182

156

148 

164

148

168

160

8,191

273

3.99

4.45

May

329

245

250

266

230

196

256

335

235

186

178

156

148

136

152

140

122

118

125

128

114

102

99

111

90

82 

80

87

80

71

67

4,914

159

2.32

2.68

June

114

140

246

"212 353

128

102

84

76

70

80

70

60

54

47

44

40

35

36

32

33

47

41

32

£7

30 

40

64

4S

40

2,425

80.8

1.18

1.32

July

31

26

26

24

34

1U^7f

52

72

99

58

43

40

50

51

38

37

33

30

29

38

52

40

36

33

31

36

42

31

26

27

1,353

43.6

0.636

0.73

A-ie.

28

29

27

27

25

*25

29

29

28

28

29

27

26

30

29

29

29

28

30

26

34

ii

32

29

26

23 

21

24

40

33

30

891

28.7

0.419

0.48

Sept.

33

31

35

28

26

27

65

45

30

23

25

26

25

25

74

86

80

59

43

38

39

32

29

35

40

31 

28

- 49

68

45

1.22C

40.7

0.594

0.6£

Calendar year 1955: Max 6,120 Min 14 Mean 217 Cfsm 3.17 In. 42.93

Water year 1955-56: Max 6,120 Mln 21 Mean 194 Cfsm 2.83 In. 38.46

feak discharge (base. 6OQ eraj. Oct. ie (about 3 p.m.; 7,98O crs (14.11 ft;; Oct. -si (aoout B p.m. 

1,200 cfs (8.13 ft); Nov. 5 (3 p.m.) 1,740 cfs (8.88 ft).

* Discharge measurement made on this dsy.

a No gsge-helght record; discharge estlmsted on basis of recorded rsnge In stsge, westher records, 

snd records for Ssugstuck River nesr Westport.

Note.--St3ge-dlscharge relation affected by ice Dec. 21 to Jan. 9, Jan. 19-30. Backwater from 

aquatic vegetation May 24 to Sept. 30.
242 HOUSATONIC RIVER BASIN

Shepaug River at Woodville, Conn.

Location.--Lat 41°43'24", long 73°17'37", at left end of dam at outlet of Shepaug Reservoir, 1 mile north of Woodville, Litchfield County, and 3.5 miles upstream from Bantam 

River.

Drainage area.--38.0 sq mi.

Records available. October 1935 to September 1956.

Gage_. --Nonrecording gage at dam or at auxiliary artificial control below dam; read usually 

once daily.

-Average discharge. 21 years, 88.1 cfs (adjusted for storage and diversion).

Extremes. --Maximum discharge during year, 3,900 cfs Oct. 16, from graph based on gage readings; minimum observed, 2.4 cfs on many days.

1935-56: Maximum discharge observed, 13,800 cfs Aug. 19, 1955; no flow at times 

(result of regulation).

Remarks. Records good. Discharge computed on basis of flow over spillway, through floodgates, and through fountain at toe of dam. Rating curves for floodgates and fountain 

computed by means of a temporary sharp-crested weir below dam. Rating curve for spillway computed for discharges below 18.5 cfs by means of same weir, and for discharges 

above 18.5 cfs by a formula selected to fit the spillway-crest sections. At times of 

ice effect on spillway, flow computed from gage readings at permanent artificial control below the dam, which was calibrated-with the sharp-crested weir. Water diverted 

from Shepaug River for municipal supply of Waterbury. Flow regulated since September 

1933 by Shepaug Reservoir (see p. 249).

Cooperation.--Records furnished by Bureau of Engineering, city of Waterbury.

Revisions (water years). WSP 971: 1936-42. WSP 1231: 1937(M), 1940-41(y), 1943-45(M) , 

1947, 1948(M), 1950(M). WSP 1301: 1936.

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

55

49

40

35

31

55

235

198

151

113

87

71

57

141

2,230

5,180

1,520

758

557

385

273

218

173

148

162

141

119

107

95 

320

944

12,648

408

+1.6

Nov.

4OO

273

202

47O

1,070

677

483

385

284

222

520

370

254

315

302

335

302

210

173

155

141

131

125

119

101

90

84

84

79

li

8,420

281

-1.7

Dec.

57

51

55

71

115

87

74

59

51

46

42

38

38

38

37

35

33

31

23

4.0

2.4

271

2.4

2.4

2.4

2.4

2.4

2.4

2.4 

2.4

2.4

1,009.4

32.6

+6.0

Jan.

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

16

128

162

122

64

44

46

42

33

26

23

21

b!8

b!6

b!6

b!4

b!3

b!2

b!2

bll 

21

35

916.6

29.6

+11.1

Feb.

33

31

37

28

24

24

28

29

29

29

35

59

79

59

49

64

51

55

46

40

29

7.9

4.6

3.4

21

92

79

62

44

1,171.9

40.4

+6.0

Mar.

44

44

49

76

98

90

113

138

148

98

107

113

98

84

71

53

51

53

55

55

53

53

49

46

44

49

55

55

55 

51

46

2,194

70.8

0

Apr.

49

51

113

160

355

570

684

415

315

295

430

415

475

429

425

980

827

500

380

346

271

257

296

273

230

218

210

198

309 

67O

11,146

372

+1.6

May

355

250

296

210

162

' 141

151

125

98

101

95

84

84

74

69

67

59

67

57

46

35

26

18

33

29

24

23

44

42 

35

38

2,938

94.8

+3.0

June

110

176

330

250

151

92

71

59

51

51

59

46

24

8.8

2.9

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2 4

1,517.7

50.6

+7.9

July

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

3.5

M

24

7.£

7.C

37

46

20

7.S

4.C

2.4

2.4

2.4

7.9

6.1

2.9

2.4

2.4

2.4

2.4

2.4

2. 4

2. 4

281.4

9.08

+15.2

Aug.

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4 

2.4

2.4

74.4

2.40

+2.5

Sept.

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4

2.4 

2 .4

72.0

2.40

+15.9

Adjusted for diversion and change in contents in Shepaug Reservoir

Mean 

Cfsm 

In.

410 

10.8 

12.45

27 C 

7.34 

8.1 C

Calendar year 1955: 

Water year 1955-56:

38.6 

1.02 

1.18

40.7 

1.07 

1.23

46.4 

1.22 

1.32

70.8 

1.86 

2.14

374 

9.84 

10.98

97.8 

2.57 

2.96

Observed

Max 6,480 Min 2.4 Mean 143 

Max 3,180 Min 2.4 Mean 116

58.5 

1.54 

1.72

24.3 4.90 

O.639 O.129 

0.74 0.15

18.3 

0.482 

0.54

Adjusted

Mean 149 Cfsm 3.92 In. 53.43 

Mean 122 Cfsm 3.21 In. 43.60

t Diversion and change in contents, equivalent in cubic feet per second, in Shepauj Re 

furnished by city of Waterbury.

b Stage-discharge relation affected by ice.

ervoir,
HOUSATONIC RIVER BASIN 243

Shepaug River near Roxbury, Conn.

Location.--Lat 41°32'59", long 73°19'49", on right bank at downstream side of Wellers 

highway bridge on Wellers Bridge road half a mile south of Roxbury Station, 1-J- miles 

southwest of village of Roxbury, Litchfield County, and 2.4 miles upstream from Jack's 

Brook.

Drainage area. 133 sq mi.

Records available. October 1930 to September 1956.

Gage.--Water-stage recorder. Datum of gage is 281.98 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers).

Average discharge. 26 years, 253 cfs (adjusted for storage and diversion).

Extremes. Maximum discharge during year, 7,760 cfs Oct. 16 (gage height, 11.51 ft); minimum, 7.2 cfs Sept. 11 (gage height, 1.17 ft).

1930-56: Maximum discharge, 50,300 cfs Aug. 19, 1955 (gage height, 17.2 ft from 

floodmarks), from rating curve extended above 3,500 cfs on basis of computation of 

flow over dam at gage heights 10.77 and 12.8 ft and slope-area determination of peak 

flow; minimum, 2 cfs Oct. 6, 1951; minimum gage height, that of Sept. 11,- 1956.-

Remarks. Records good except those for periods of ice effect or no gage-height record, 

which are poor. Water diverted from Shepaug Reservoir for municipal supply of city of 

Waterbury. Flow regulated by Shepaug Reservoir (see p. 249 ). Diurnal fluctuations 

from an unknown cause during low flow.

Revisions (water years). WSP 801: 1931-36. WSP 971: 1936, 1939-40, 1942. WSP 1301: 

1936(M) , 1947(M).

Rating tables, water year 1955-56, except periods of lee effect (gage height, In feet, 

and discharge, in cubic feet per second)

Oct. 1 to Jan. 9

2.7 

3.0 

3.5 

4.0

4.5

111

183

272

377

5.5 660

6.5 1,140

8.0 2,240

11.0 6,600

2.2

2.3 

2.5 

2.7 

3.0

Jan. 9 to Aug. 31

8.5 3.5 

4.0 

5.0 

64 7.0

118

246

430

940

2,640

Sept. 1-30

1.2 9

1.4 29

1.6 56

1.8 95

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

146 

130

116

107

102

132

331

282

249

209

183

167

155

246

3,400

5.470

2,920

1,800

1,350

1,010

763

614

554

551

597

590

557

516

480

596

1,310

25,633

827

+1.6

Nov.

880 

760

680

1,200

2.27O

1,320

1,000

880

78O

700

1,010

880

740

905

830

880

905

760

680

642

575

516

*488

475

450

425

390

365

345

310

23,041

768

-1.7

Dec.

290 

270

270

320

550

300

260

240

220

2OO

190

180

170

150

150

140

135

130

130

120

95

95

100

110

120

115

105

100

100

105

100

5,360

173

+6.0

Jan.

95 

90

95

100

100

95

90

85

285

402

366

390

382

315

263

210

180

160

140

130

120

105

105

100

100

95

90

90

85

120

155

5,138

166

+ 11.1

Feb.

110 

110

165

115

120

110

130

150

160

180

210

280

263

230

224

224

195

260

290

25O

187

145

135

125

310

280

200

210

180

-

5,548

191

+6.0

Mar.

150 

170

230

250

200

210

500

600 460"

350

330

360

290

270

*298

253

250

260

230

235

240

240

246

266

235

224

240

256

277

263

256

8,639

279

0

Apr.

294 

374

528

645

1,000

,160

,380

,OOO

910

970

,030

,060

,130

,060

,130

.840

,840

,310

1,100

940

790

710

735

710

625

600

560

533

710

1,190

27,864

929

+1.6

May

880 

710

820

660

565

506

528

458

402

386

354

329

308

287

273

256

234

256

243

230

201

184

182

187

172

160

167

184

170

153

160

10,605

342

+3.0

June

318 

329

660

497

350

290

256

227

201

201

207

182

150

122

108

92

69

72

61

58

60

*55

49

49

46

40

64

69

54

45

4,981

166

+7.9

July

40 

37

34

32

75

180

112

90

116

139

112

90

79

135

137

112

92

74

64

56

72

81

72

62

55

49

49

49

45

40

37

2,417

78.0

+15.2

Avg.

t

24

21

19

21

23

17

18

17

18

33

17

19

17

16

15

14

13

12

15

23

18

20

23

14

12

10

10

*11

12

572

18.5

+2.5

Sept.

12 

15

29

17

14

13

78

30

18

15

14

13

12

11

12

19

24

30

22

18

27

33

31

52

44

36

31

48

48

41

807

26.9

+15.9

Adjusted for diversion and change In contents in Shepaug Reservoir

Mean 

Cfsm 

In.

829

6.23 

7.18

766 

5.76 

6.43

Calendar year 1955: 

Water year 1955-56:

179 

1.35 

1.56

177 

1.33 

1.53

197 

1.48 

1.60

279 

2.10 

2.42

931 

7.00 

7.81

345 

2.59 

2.99

Observed

Max 15,400 Min 7.8 Mean 424 

Max 5,470 Min 10 Mean 330

174 

1.31 

1.46

93.2 

0.701 

0.81

21.0 

0.158 

0.18

42.8 

0.322 

0.36

Adjusted

Mean 430 Cfsm 3.23 In. 43.87 

Mean 336 Cfsm 2.53 In. 34.33

Peak discharge (base. 1.500 cfs).--Oct. 16 (3:30 a.m.) 7,76O cfs (11.51 ft); Oct. 31 (6 a.m.) 

1,540 cfs (7.13 ft); Nov. 5 (4 a.m.) 2,930 cfs (8.7 ft).

* Discharge measurement made on this day.

t Diversion and change in contents, equivalent in cubic feet per second, in Shepaug Reservoir; 

furnished by city of Water-bury.

Note. Stage-discharge relation affected by ice Dec. 17 to Jan. 9, Feb. 22-24, Mar. 17-22, 25. 

No gage-height record Nov. 8, 9, Nov. 25 to Dec. 16, Jan. 16 to Feb. 12, Feb. 18-20, Feb. 26 to 

Mar, 14; discharge estimated on basis of weather records, engineers' notes, fragmentary record, and 

records for nearby streams.
244 HOUSATONIC RIVER BASIN 

Pomperaug River at Southbury/'Conn.

Location. Lat 41°28'50", long 73°13'30", on right bank 200 ft upstream from highway

bridge, 800 ft downstream from Bullet Hill Brook, 0.6 mile west of Southbury, New Haven 

County, and 5.8 miles upstream from mouth.

Drainage area.--7S.3 sq ml.

Records available. June 1932 to September 1956.

 rec °r<Jer. Datum of gage is 165.60 ft above mean sea level, datum of 

929 (levels by Corps of Engineers).

Average discharge. --24 years, 132 cfs.

Extremes. --Maximum discharge during year, 8,860 cfs Oct. 16 (gage height, 15.75 ft, from 

floodmarks); minimum, 8.3 cfs Aug. 18, 27-31 (gage height, 2.55 ft)

1932-56: Maximum discharge, 29,400 cfs Aug. 19, 1955 (gage height, 21.8 ft, from 

floodmarks), from rating curve extended above 1,200 cfs by computation of flow over 

dam at gage height 16.0 ft and by slope-area determination of peak flow; minimum 

3.3 cfs Aug. 27, 1949 (gage height, 2.32 ft).

Remarks. Records good except those for period of no gage-height record, which are fair 

InTrequent regulation at low flow by mill upstream *e i<*ir.

Revisions (water years). WSP 781- 

1933-34, 1935(M), 1937(M). Drainage area. WSP 851: 1934(M), 1936(M). WSP 1201:

Rating table, wate

3.1 

3.5

year 1955-56 (gage height. In feet, and discharge, 

In cubic feet per second)

5.5

9.0

20

111

4.0 

4.5 

5.0 

7.0 

14.0

206

337

515

Ij470

6,440

Discharge, In cubic feet per second, water year October 1955 to Septembe" 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

IS

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

100

77

b5

56

52

119

286

204

167

121

*100

90

80

167

2,740

6.580

2,010

964

650

450

380

320

ZOO

300

370

310

270

240

220

600

1,200

19.5S8

625

8.30

3.57

Nov.

600

450

370

1,000

1 . 900

800

550

550

450

400

650

550

450

600

500

550

450

380

340

320

290

270

*240

247

219

206

189

187

171

150

14,029

468

6.22

6.94

Dec.

148

139

144

183

204

161

121

120

116

111

97

95

89

80

89

84

76

76

77

60

55

52

53

55

60

62

56

52

48

4~6

2,855

92.1

1.22

1.41

Jan.

45

44

41

43

46

46

44

37

299 269~

163

200

183

13E

108

98

94

75

73

76

65

61

65

56

S9

53

51

48

46

132

151

2,903

93.6

1.24

1.43

Feb.

77

110

213

98

115

111

314

*223

173

183

191

158

224

169

156

156

120

229

276

220

163

111

100

84

291

255

152

156

116

__ _ ___

4,944

170

2.26

2.44

Mar.

100

U4

173

185

146

154

446

494

360

268

257

265

202

198

*204

175

163

165

142

146

137

152

181

224

175

163

196

217

C28

196

196

6,422

207

2.75

3.17

Apr.

249

322

536

470

651

555

535

440

416

535

458

374

328

292

275

535

416

292

273

235

217

196

210

206

177

183

185

163

269

430

10,423

347

4.61

5.14

May

240

204

252" 360

238

200

275

208

177

179

163

148

139

126

125

118

109

121

121

130

105-

94

98

108

83

77

83

98

79

69

80

4,607

149

1.98

2.28

June

219

228

453

247

175

141

120

101

89

90

105

80

69

59

53

48

45

43

40

37

36

#41

39

34

33

30

37

83

53

43

2,871

95.7

1.27

1.42

July

36

32

29

26

37

177

101

74

106

83

58

46

65

94

74

53

48

40

39

33

46

58

43

36

33

29

33

32

26

*22

19

1,628

52.5

0.697

0.80

Aug.

20

19

17

16

15

15

15

14

12

12

11

10

10

10

10

10

9.5

9.0

8.6

8.6

12

14

12

10

9.5

9.0

8.6

8.3

8.3

8.3

8.6

360.3

11.6

0.154

0.18

Sept.

9.0

16

33

16

13

12

22

16

13

12

11

11

10

11

13

20

21

22

18

16

16

15

14

24

17

15

21

24

19

503.0

16.8

0.223

0.25

Calendar year 1955 : Max 9,510 MIn 12 Mean E32 Cfsm 3.08 In. 41.91

Water year 1955-56 : Max 6,380 Mln 8.3 Mean 194 Cfsm 2.58 In. 35.03

Peak discharge (base. 1,400 cfs). Oct. 16 (9 a.m.) 8,860 cfs (15.75 ft); Oct. 31 (bime unknown) 

about 1,500 cfs; Nov. 5 (time unknown) 2,980 -cfs (9.7 ft).

* Discharge measurement made on this day.

Note. No gage-height record Oct. 16 to Nov. "23; discharge estimated on basis of high-water marks, 

parbial recorder record, weather records, engineers' notes, and records for nearby streams.
MUUSATONIC RIVER BASIN 245

Housatonic River at Stevenson, Conn.

Location.--Lat 41°23'05", long 730 10'05", on left bank in New Haven County, 0.2 mile 

downstream from dam of Connecticut Light & Power Co. at Stevenson, Fairfielc? County 

0.2 mile upstream from Eight Mile Brook, and at mile 19.2.

Drainage area. 1.545 sq mi.

Records available.--August 1928 to September 1956.

Gage. Water-stage recorder. Datum of gage is 24.98 ft above mean sea level, eatum of 

1929 (levels by Corps of Engineers).

Average discharge. 28 years, 2,650 cfs (adjusted for storage and diversion).

Extremes. Maximum discharge during year, -75,800 cfs Oct. 16 (gage height, 24.50 ft), from 

rating curve extended above 35,000 cfs on basis of computation of peak flow at Stevenso 

and Derby dams and slope-area determinations at gage heights 21.5 and 23.5 ft; minimum, 

43 cfs Oct. 30 (gage height, 0.48 ft); minimum daily, 105 cfs Apr. 1, July 21.

1928-56: Maximum discharge, that of Oct. 16, 1955fpractically no flow at times, 

result of regulation.

Remarks. Records excellent. Ordinary flow completely regulated by Stevenson Jtydroelectric plant. Flow regulated by Lake Candlewood, Lake Lillinonah, Lake Zcar, and 

Shepaug Reservoir, having a combined usable capacity of 6,840,000,000 cu ft, corrected 

(see p. 249 ), and by small diversion from the basin at Shepaug Reservoir.

Revisions (water years)--WSP 711: 

WSP 1301:1933-34(M), 1936-37.

1929(M). WSP 781: Drainage area. WSP 1231: 1951.

Rating table, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

1.0

1.5 

2.0 

3.0 

4.0

94

170

285

660

1,250

5.0

7.0

10.0

14.0

23.0

2,13O

4,860

11,200

23,400

67,000

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

!\ 

I?

20

21

22

23

24

25

26 

27

28

29

30

31

Total

Mean

(t)

Oct.

986

1,820

1,330

440

274

350

694

362

414

267

432

420

1,520

3,830

18,000

62 . 400

39,50O

26,400 

19,100

15,800

13,500

10,800

9,200

6,790

5,920

6,680 

6,900

4,780

332

10^600

273,121

6,810

+726

Nov.

*9,180

8,180

8,340

10,700

22.000

16,600

14,200

11,200

11,200

10,400

14,000

7,600

7,000

10,50O

10,200

11,100

9,950

8,700 

7,600

7,600

7,200

5,700

5,650

5,390

4,290

5,220 

2.920

4,130

3,540

3,080

.263,570

8,786

+46

Dec.

3,080

3,060

3,640

3,300

3,420

5.820

2,840

2,480

2,120

1,610

791

1,910

1,740

1,730

2,350

2,180

1,970

1,280 

2,410

2,180

2,120

2,450

419

1,490

704

1,120 

1,660

1,990

1,250

827

468

62,409

2,013

-58

Jan.

1,280

612

1,380

1,420

1,280

1,200

1,020

248

2,010

4,140

3,570

3,630

4,410

4.460

1,460

1,500

2,370

1,270 

1,550

1,510

1,560

110

1/520

1,520

1,170

1,760 

2,660

821

330

1,700 

1,640

55,111

1,778

+55

Feb.

1,050

2,820

2,370

1,130

404

2,470

2,290

1,800

1,920

1,780

2,300

1,920

4,530

2,190

2,170

2,510

3,260

3,510 

1,500

2,670

2,790

1,940

2,290

2,750

2,880

4.690 

3,300

3,430

3,130

 

71,794

2,476

+50

Mar. 

1,910

2,35O

2,660

3,240

4,200

3,940

5,340

6.800

6,420

6,O60

4,600

3,560

*4,530

4,790

4,860

3,440

3,920

1,820 

3,770

5,150

3,550

2,780

3,470

3,140

868

3,240 

2,230

4,070

3,800

3,210 

2,590

116,308

3,752

-270

Apr.

105

3,680

4,260

4,990

7,820

12,200

14,200

12,200

9,700

8,700

9,200

8,700

9,450

8,700

9,450

11,700

14,200

14.500 

13,700

8,700

10,700

7,600

5,700

6,060

7,000

7,400 

7,400

6,720

5,010

9,700

259,445

6,648

+365

May

11.700

10,200

10,200

7,820

7,820

7,000

5,700

5,520

5,520

4,950

3,990

4,110

4,190

3,960

3,210

3,870

3,350

3,140 

2,620

1,370

2,910

1,610

3,830

3,140

2,160

849 

1,510

2,340

1,880

756 

1,080

132,305

4,268

-53

June

1,440

4,640

5,OOO

6.540

3,520

3,610

2,390

2,680

2,320

307

2,040

2,360

1,800

2,090

1,920

511

324

1,560 

1,340

1,940

1,390

1,050

180

184

858

753 

1,440

1,300

1,380

194

56,861

1,895

-5

July

172

152

172

186

2,100

2.470

1,730

132

492

1,250

926

705

1,790

628

1,160

1,050

925

1,050 

2,040

453

105

174

1,020

961

827

884 

545

787

118

486 

282

25,772

831

+97

Au,-;.

194

626

666

458

158

440

333

395

214

580

321

119

434

740

974

352

634:

224

118

453

638

678

520

826

156

166 

596

664

715

389 

292

14,073

454

-106

Sept.

178

164

158

920

840

1,62C

808

459

106

498

617

452

1,170

1,830

156

160

950

568 

664,

1,020

662

245

225

390

433

664 

2,930

5.260

Ibo

22,712

 757

-41

Adjusted for diversion and change in reservoir contents

Mean 

Cfsm

In.

9,536 

6.17 

7.11

8,832 

5.72 

6.3£

Calendar year 1955: 

Water year 1955-56:

1,955 

1.27 

i 1.46

1,833

1.19 

1.37

2,526 

1.63 

1.76

3,482 

2.25 

2.59

9,013 

5.83 

6.50

4,215 

2.73 

3.15

Observed

Max 54,800 Min 130 Mean 4,130 

Max 62,400 Mln 105 Mean 3,698

1,890 

1.22 

1.36

928 

0.601 

0.69

348 

0.225 

0.26

716 

0.463 

0.52

Adjusted

Mean 4,205 Cfsm 2.72 In. 36.93 

Mean 3,765 Cfsm 2.44 In. 33.15

Discharge measurement made on this day. 

t Change in contents in Lake Candlewood, Lake Lillinonah, Lake Zoar, and Shepaug Reservoir, and 

small diversion from the basin at Shepaug Reservoir, equivalent In cubic feet per second; furnished 

by Connecticut Light Sc Power Co. and city of Waterbury.
246 HOUSATONIC RIVER BASIN

Naugatuck River near Thomaston, Conn.

Location. Lat 41°42'15", long 73°03'53", on right bank near do'wnstreair side of Twomlle 

Bridge , 250 ft downstream from New York, New Haven and Hartford Railroad bridge, 

0.4 mile upstream from Leadmlne Brook, and 2 miles north of Thomastcn, Lltchfleld 

County, and at mile 31.

Drainage area. 71.9 sq ml.

Records available. October 1930 to September 1956.

Gage. Water-stage recorder. Datum of gage Is 389.44 ft above mean sea level, datum of 

' 1929 (levels by Corps of Engineers).

Average discharge. 26 years, 146 cfs.

Extremes. --Maximum discharge during year, 8,100 cfs Oct. 15 (gage height, 10.30 ft); minimum, 13 cfs Sept. 15 (gage height, 0.36 ft).

1930-56: Maximum discharge, 41,600 cfs Aug. 19, 1955 (gage height, 24.0 ft, from 

floodmark), from rating curve extended above 6,000 cfs on basis of slope-area determination of peak flow; minimum, about 7 cfs Mar. 12, 1940 (result of freezeup); minimum 

daily, 13 cfs Oct. 24, 1931; minimum gage height, that of Sept. 15, 1956.

Remarks . Records good except those for periods of ice effect and shifting control, which 

are fair. Slight diurnal fluctuation.

Revisions (water years 1.--WSP 741: 

WSP 1111: 1939(M).

1931-32. WSP 781: Drainage area. WSP 821: 1936(M).

Rating tables, water year 1955-56,, except periods of ice effect and 

shifting-control (gage height, in feet, and discharge, in crbic 

feet per second)

Nov. 1 to Sept. 30

1.4 

1.6 

2.0 

2.5

155

310

3.0 540

4.0 1,160

6.0 2,880

9.0 6,250

2.0

15

43

117

195

320

2.5 535

3.0 780

4.0 1,350

6.0 2,910

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2~3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

106

85

73

62

59_

204

566

312

250

186

156

126

*102

354

5,850

5,180

1,930

958

843

636

46Z

374

314

303

358

292

231

204

186

952

2 ,080

23,794

768

10.7

12.34

Nov.

620

432

304

1,370

*2.510

948

660

558

458

334

742

558

392

672

526

602

538

368

313

306

285

244

210

220

*200

183

149

155

151

157

14,945

498

6.93

7.73

Dec.

121

103

103

135

165

137

128

117

115

108

107

98

81

76

81

75

70

68

72

62

59

56

54

59

65

54

41

44

44

44

43

2,585

83.4

1.16

1.34

Jan.

43

43

49

54

51

*49

47

40

185

575

226

292

215

135

105

97

95

78

72

65

59

55

51

49

47

45

43

41

59

72

97

2,914

94.0

1.31

1.51

Feb.

68

72

90

66

69

*62

102

97

89

102

100

218

161

117

121

130

95

95

97

95

84

69

76

72

195

223

135

122

92

3,114

107

1.49

1.61

Calendar year 1955: Max 14,700 Min 18

Mar.

80

95

158

205

155

117

211

255

208

159

153

195

145

135

128

100

100

110

105

100

97

1?2

It.

130

105

108

117

*122

128

117

108

4,192

135

1.88

2.17

Apr.

122

165

313

389

870

815

885

526

392

576

675

720

750

685

750

1,490

1,080

690

595

481

418

454

544

427

356

564

524

356

700

1,120

17,990

600

S.54

9.30

May

494

324

418

288

226

198

215

179

155

161

149

131

126

117

114

*102

92

114

114

105

89

82

92

94

80

72

82

105

84

75

81

4,754

155

2.15

2.46

June

175

200

559

242

159

126

105

86

75

84

97

84

68

58

51

50

45

44

43

54

38

41

35

33

34

26

47

41

39

41

2,758

91.5

1.27

1.42

July

24

25

21

19

8T

~80 153

51

84

78

51

39

42

105

108

66

55

42

*54

36

52

72

59

40

54

52

52

34

31

32

30

1,618

52.2

0.726

0.84

Aug.

45

49

51

43

28

30

32

51

30

30

32

32

34

36

51

30

50

29

27

52

51

45

52

52

50

28

27

26

21

2T

*25

1,016

32.8

0.456

0.53

Sept.

22

20

22

17

17

-73 106

26

20

19

18

17

17

18

17

28

29

32

25

24

30

18

17

50

29

24

*21

49

30

24

857

28.6

0.398

0.44

Mean 278 Cfsm 3.87 In. 52.42

Water year 1955-56: Max 5,850 Min 17 Mean 220 Cfsm 3.06 In. 41.69

Apr. 30 (6 aim.) 1,56O cfs (4.3l'ft).

* Discharge "' " measurement measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 14, Dec. 17 to Jan. 10, Jan. 18 to Feb. 2,

:b. 4, 22-24, Mar. 16-21, 24, 25. Shifting-control method used Oct. 1-31.
HOUSATONIC RIVER BASIN 247

LeatJmine Brook near Thomaston, Conn.

Location. Lat 41°42'06", long 73°03'28", on left bank 10 ft downstream from highway bridge, 

0.4 mile upstream from mouth, and 2£ miles northeast of Thomaston, Litchfield County.

Drainage area.--24.0 sq mi.

Records available. September 1930 to September 1956.

Gage. Water-stage recorder. Datum of gage is 401.23 ft above mean sea level, datum" of 

1929 (levels by Corps of Engineers).

Average discharge.--26 years, 49.0 cfs.

Extremes.--Maximum discharge during year, 3,080 cfs Oct. 16 (gage height, 9.60 ft); minimum, about 0.5 cfs Aug. 20 (gage height, 2.20 ft).

1930-56: Maximum discharge, 10,400 cfs Aug. 19, 1955 (gage height, 13.1 ft, from 

floodmarks in gage house), from rating curve extended above 2,600 cfs on basis of 

contracted-opening determination at peak flow; minimum, 0.08 cfs Aug. 27-29, 1941; 

minimum gage height, 1.60 ft at times during period Sept. 12-15, 1931, and on July 30, 

Aug. 12, 1933.

Remarks. Records good except those for periods of ice effect, which are fair, and those 

below 2 cfs, which are poor. Occasional low-water regulation.

Revisions (water years). WSP 781: Drainage area. WSP 1301: 1947. WSP 1331: 1931(M), 

1933(M) , 1934, 1935(M), 1936. 1937(M), 1938, 1939-40(P) , 1942(P), 1943-44(M), 1945, 

1947(M), 1949, 1951(P), 1953(P).

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

22

16

13

11

9.9

47

*121

71

53

35

27

23

20

111

*2,090

1,990

608

299

266

186

138

110

94

89

94

76

67

59

56

247

537

7,565.9

245

10.2

11.76

Nov.

188

129

103

465

808

288

190

157

125

106

272

159

116

225

152

202

172

115

95

86

79

74

68

72

*64

58

52

51

46

11

4,758

159

6.62

7.39

Dec.

39

36

40

62

82

57

41

37

35

32

29

27

26

24

26

24

22

22

19

18

17

16

16

17

18

17

15

14

15

14

15

870

28.1

1.17

1.35

Jan.

12

12

11

10

10

*10

10

9

50

180

102

126

98

58

43

37

32

27

23

20

18

16

15

14

13

12

12

11

12

34

56

1,093

35.3

1.47

1.70

Feb.

31

32

51

32

29

24

45

45

40

47

50

160

107

69

72

67

47

45

40

36

30

25

21

19

75

120

70

57

39

1,525

52.6

2.19

2.36

Mar.

35

36

81

107

84

69

139

154

115

82

77

102

69

61

55

44

55

51

46

49

44

49

58

63

53

45

49

*56

59

52

45

2,084

67.2

2.80

3.23

Apr.

53

76

155

192

391

393

338

184

158

238

277

277

264

242

238

"290 460

193

165

129

110

102

129

122

91

91

84

76

118

168

5,804

193

8.04

8.97

May

126

94

144

96

77

68

81

65

56

60

54

47

45

41

40

37

34

42

41

41

33

29

32

33

27

24

30

34

27

23

30

1,611

52.0

2.17

2.50

June

72

75

-84 185

54

40

32

26

23

24

28

21

17

14

11

12

12

*9.6

7.8

6.8

7.1

7.8

5.9

5.0

5.0

4.0

15

18

9.3

6.4

837.7

27.9

1.16

1.29

July

4.8

4.2

4.1

3.5

25

56

31

19

27

21

13

9.9

12

28

29

15

12

8.3

*5.9

4.7

9.9

18

13

9.3

6.8

4.8

3.8

3.3

2.8

2.2

1.6

408.9

13.2

0.550

O.63

Aug.

1.5

1.4

1.2

1.1

.9

.9

1.0

.9

.7

.8

1.2

.3

.9

1.1

1.1

.9

.7

.7

.6

^1

1.1

1.8

1. 5

1.1

1.0

.8

.8

.7

.7

.8

.9

30.2

0.974

0.041

0.05

Sept.

1.0

1.3

2.0

1.4

1.1

13

13

4.6

2.5

1.6

1.5

1.3

1.2

1.1

1.0

2.1

3.7

5.9

3.7

3.0

3.2

2.4

2.0

6.6

6.8

4.3

*3.2

5.5

8.0

6.4

114.4

3.81

0.159

0.18

Calendar year 1955: Max 3,660 Hin 0.7 Mean 83.0 cfsm 3.46 In. 46.96

Water year 1955-56: Max 2,090 Min 0.5 Mean 73.0 Cfsm 3.04 In. 41.41

Peak discharge (base, 650 cfs).--Oct. 16 (6:30 a.m.) 3,08O cfs (9.6C ft); Oct. 31 (1 a.m.) 1,300 

cfs (7.57 ft); Nov. 5 (4:30 a.m.) 1,360 cfs (7.64 ft); Apr. 5 (7 p.m.) 70O cfs (6.34 ft). 

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Dec. 11-13, Dec. 19 to Jan. 10, Jan. 19-30, Feb. '
248 HOUSATONIC RIVER BASIN

Naugatuck River at Beacon Palls, Conn. 

(Formerly published as Naugatuck River near Naugatuck)

Location. Lat 41°26 I 32", long 73C 03'47", on downstream side of highway bridge over 

Naugatuck River at Beacon Falls, New Haven County, 0.4 mile upstream from Bronson 

Brook and at mile 10.1. Prior to Oct. 1, 1955, at site 2.5 miles upstream.

Drainage area. 261 sq ml. Prior to Oct. 1, 1955, 246 sq mi.

Records available.--June 1918 to September 1924, September 1928 to Sept3mber 1955 (pub11shed as "near Naugatuck"), October 1955 to September 1956.

Gage.--Chain gage read twice daily. Datum of gage Is 117.28 ft above iman sea level, 

3atum of 1929. Prior to Oct. 1, 1955, water-stage recorder at site 2.5 miles upstream 

at datum 37.89 ft higher.

Average discharge.--34 years (1918-24, 1928-56), 479 cfs (adjusted for storage and 

diversion).

Extremes. Maximum discharge during year, 30,400 c-fs Oct. 16 (gage height, 13.7 ft, former 

site and datum, from floodmarks), from rating curve extended above 9,000 cfs as explained below; minimum observed, 73 cfs Sept. 2 (gage height, 1.68 f;); minimum daily 

discharge, 74 cfs Sept. 2.

1918-24, 1928-56: Maximum discharge, 106,000 cfs Aug. IS, 1955 (gage height, 

25.7 ft, from floodmarks), from rating curve extended above 9,000 cf.' on basis of 

slope-area determinations at gage heights 12.4 and 25.7 ft; minimum, 24 cfs Oct. 21, 

1935; minimum dally, 40 cfs Oct. 5, 12, 1930, Sept. 7, 1936; minimum gage height, 

0.14 ft July 17, 1939 (site and datum then In use).

Flood of November 1927 reached a stage of 14 ft (discharge, about 26,000 cfs).

Remarks. Records good except those for periods of no gage-height recorl, which are fair. 

Flow regulated by Industrial plants upstream during low stages, and by Pitch, Morris, 

and Wigwam Reservoirs having a combined capacity of 550,000,000 cu f-. (see p. 249). 

Flow Increased by diversion, from Shepaug Reservoir into Naugatuck River basin.

Revisions (water years). WSP 781: Drainage area. WSP 1171: 1918-24, 1928-49.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Feb. 2 Feb. 3 to Sept. 30

2.1 

2.5 

3.0 

4.0 

5.0

114

197

340

740

1,350

6.0

8.0

11.0

14.3

2,150

4,500

10,200

20,200

1.7 

2.0 

2.5 

3.0

75

117

220

390

4.0 

5.0 

6.5

870

1,570

3,010

Discharge, In cubic feet per second, water year October 1955 to September 1956

Day

1

2

5 

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

20

21

22

23

24

25

26

27

28

29

30

51

Total

Mean

(t)

Oct.

540

280

250 

210

190

480

1,900

1,200

 850

600

470

580

330

7OO

14,000

20,000 

7,000

3,600

5,000

2,200

1,680

1,500

1,080

1,020

1,150

1,020

800

700

650

2,400

7,120

76,880

2,480

+ 17.7

Nov.

5,200

2,100

1,560 

4,000

8.100

4,220

2,590

1,720

1,520

1,420

2,900

2,100

1,500

2,200

1,900

2,100 

1,800

1,460

1,500

1,200

1,100

1,000

900

800

800

750

650

650

600

550

56,690

1,890

-4.3

Dec.

500

460

440 

500

650

550

500

470

450

420

400

570

550

520

520

350 

520

500

500

270

250

200

205

245

254

223

213

218

202

207

I 87

10,604

342

-11.8

Jan.

183

169

155 

143

128

155

164

169

710

1.280

740

 900

765

540

457

592 

561

 524

512

512

256

247

253

218

218

223

215

200

200

264

389

11,020

355

-3.5

Feb.

245 4l8"

600 

386

446

394

*870

675

625

552

650

1.160

900

700

650

650 

524

555

700

625

470

430

390

390

814

1,020

730

650

430

17,629

608

-1.0

Mar.

414

5lO

782 

1,020

870

728

1,190

1.55O

j_ 330

870

9OO.

950

810

840

810

675 

524

625

550

650

625

650

755

870

782

700

700

700

782

700

700

24,522

791

-1.2

Apr.

960

990

1,550 

1,570

2,540

2,180

2,300

1,700

 1,550

1,820

2,000

1,860

1,820

1,690

1,610

5.010 

2,580

1,450

1,570

1,150

1,050

990

1,080

1,050

870

840

870

810

1,450

2 , OOOv

46,070

1,536

+2.5

May

1,160

990

1.190 

930

810

700

900

728

625

650

582

524

486

462

446

410 

390

418

418

410

562

545

406

402

303

296

296

386

296

286

317

16,922

546

-5.1

June

650

782

1.550 

960

675

498

378

546

282

270

296

282

240

228

208

198 

181

172

172

172

172

179

142

137

142

144

166

242

181

144

10,169

339

-14.8

July

150

150

150 

127

562

596

39§

205

276

296

188

174

174

218

228

162 

146

138

140

158

170

181

184

162

140

138

190

150

125

*128

120

6,024

194

-17.8

Aug.

116

122

111 

110

101

111

105

112

111

110

89

85

87

112

106

105 

101

85

80

101

144

T5T

108

98

82

80

99

96

102

99

98

3,195

103

-23.1

Sept.

84

74

106

101

102

114

313

119

82

92

95

99

104

101

127

127 

119

128

108

122

102

88

82

142

128

112

110

164

130

95

5,470

116

-19.6

Adjusted for diversion and change in reservoir contents

Mean 

Cfsm 

In.

2,498 

9.57 

11.03

1,886 

7.22 

8.06

Calendar year 1955: 

Water year 1955-56:

330 

1.26 

1.45

552 

1.35 

1.56

6O7 

2.33 

2.51

790 

3.03 

3.49

1,538 

5.89 

6.57

541 

2.07 

2.39

Observed

Max 56,400 Mln 71 Mean 968 

Max 20,000 Mln 74 Mean 774

324 

1.24 

1.58

176 

0.674 

0.78

79.9 

0.306 

0.55

96,4 

0.569 

0.41

Adjusted

Mean 961 Cfsm 3.81 In. 51.77 

Mean 768 Cfsm 2.94 In. 39.98

Peak discharge (base. 4.000 efs).--0ct. 16 (about 5;5O a.m.) 50.400 efs (15.7 ft); Oct. 1 (about 

1 a.m.) 7,120 cfs (9.6 ft); Nov. 5 (1:30 a.m.) 6,390 cfs (9.24 ft).

* Discharge measurement made on this day.

t Diversion from Shepaug Reservoir and change in contents in Wigwam, Morris and Pitch Reservoirs, 

equivalent in cubic feet per second; furnished by city of Waterbury.

Note.--No gage-height record Oct. 1-20, 22, 25-29, Nov. 11-16, 19-30, Dec. 1-22, Feb. 27, Apr. 7, 

8,' discharge estimated on basis of existing record, weather records, and daily sum of records for 

Leadmine Brook and Naugatuck River near Thomaston.
HOUSATONIC RIVER BASIN 249

Reservoirs In Housatonic River basin

Lake Candlewood (Rocky River Reservoir) on Rooky River, lat 41°35'00", long 73°26'00", 

a miles west of New Milford, Litchfield County, Conn. Drainage area, 40.4 sq mi. Completed in 1928 for storage of water for power; impounds water pumped from the Housatonic 

River during offpeak power periods. Usable capacity, 6,210,000,000 cu ft. Records 

available, August 1928 to September 1956. Records furnished by The Connecticut Light & 

Power Co.

Shepaug Reservoir on Shepaug River, lat 41°43'24", long 73°17'37", 1 mile north of Woodville, Litchfield County, Conn. Drainage area, 38.0 sq mi. Completed in 1933 for 

storage of water for municipal supply. Usable capacity, 77,000,000 cu ft. Records 

available, February 1933 to September 1956. Records furnished by Bureau of Engineering, 

city of Waterbury, Conn.

Lake Lllllnonah on Housatonic River, lat 41°26'52", long 730 17'49", in Litchfield County, 

2.3 miles north of Newtown, Fairfield County, Conn. Drainage area, 1,392 sq mi. Completed in 1955 for storage of water for power. Usable capacity, 219,000,000 cu ft. 

Records available, February 1955 to September 1956. Records furnished by The Connecticut Light & Power Co.

Lake Zoar on Housatonic River, lat 41°23'05", long 73°09 I 55", at Stevenson, Fairfield 

County, Conn. Drainage area, 1,545 sq mi. Completed in 1919 for storage cf water for 

power. Usable capacity, 331,000,000 cu ft. Records available, August 1928 to September 1956. Records furnished by The Connecticut Light & Power Co.

Pitch, Morris, and Wigwam Reservoirs on Branch Brook, are operated as a unit with Shepaug 

Reservoir for storage of water for municipal supply. The downstream order and capacity 

of each is as follows: Pitch Reservoir, lat 41°41'34", long 73°09'04", 4 miles northwest of Thomaston, Litchfield County, Conn. Drainage area, 5.74 sq mi. Completed in 

1943. Total capacity, 190,000,000 cu ft. Records available, November 1943 to September 1956. Morris Reservoir, lat 41°40i29", long 73°08'39", 3? miles west of Thomaston, 

Litchfield County, Conn. Drainage area, including Pitch Reservoir, 13;3 sq mi. Completed in 1913. Total capacity, 265,000,000 cu ft. Records available, May 1918 to 

September 1924, September 1928 to September 1956. Wigwam Reservoir, lat 41°39'50", 

long 73°07'41", 3 miles west of Thomaston, Litchfield County, Conn. Draina-re area, Including Pitch and Morris Reservoirs, 18.1 sq ml. Total capacity, 97,000,001 cu ft. 

Records available, May 1918 to September 1924, September 1928 to September 1956. Records furnished by Bureau of Engineering, city of Waterbury, Conn.

Month-end contents, water year October 1955 to September 1956

Date

Sept. 30... ............

Dec. 31...............

Calendar year 1955. .

June 30 ............

Sept. 30. ..............

Water year 1955-56. .

Date

Calendar year 1955. .

Mar. 31....... ........

Sept. 30.. .............

Water year 1955-56..

Lake Candlewood 

(Rooky River Reservoir)

Contents 

(ra.o.f.)

5,834 

5,834 

5,678 

5,309

-

5,511 

5,750 

5,642 

5,762 

5,702 

5,690 

5,702 

5,583 

5,499

-

Lake

226.9 

276.1 

200.5 

330.8

-

312.5 

289.6 

218.1 

419.6 

321.6 

294.1 

312.5 

321.6 

307.9

-

Change In 

contents 

(equivalent 

In ofs)

0 

-60.2 

-137.8

-25.9

+ 75.4 

+ 95.4 

-40.3 

+46.3 

-22.4 

-4.6 

+4.5 

-44.4 

-32.4

-10.6

Zoar

+18.4 

-29.2 

+48.6

+ .4

-6.8 

-9.1 

-£6.7 

+77.7 

-36.6 

-10.6 

+6.9 

+3.4 

-5.3

+2.6

Shepaug Reservoir

Contents 

(m.c.f .)

98.0 

102.2 

97.8 

93.0

'

97.2 

97.5 

97.5 

101.7 

97.9 

84.6 

91.9 

64.5 

73.2

-

Change In 

contents 

(equivalent 

In cfs)

+1.6 

-1.7 

-1.8

-.2

+1.6 

+ .1 

0 

+1.6 

-1.4 

-5.1 

+2.7 

-10.2 

+3.4

+ .8

Pitch, Morris, and 

Wigwam Reservoirs

497.3 

544.7 

533.6 

522.9

-

539.3 

551.5 

548.2 

554.6 

552.6 

548.0 

533.5 

505.8 

486.3

-

+17.7 

-4.3 

-4.0

-.9

+ 6.1 

+4.9 

-1.2 

+2.5 

-.7 

-1.8 

-5.4 

-10.3 

-7.1

0

Lake Lllllnonah

Contents 

(m.c.f.)

652 

2,544 

2,898 

2,965

-

2,898 

2,791 

2,248 

2,869 

2,877 

2,884 

3,072 

2,891 

2,841

-

Change In 

contents 

(equivalent 

In cfs)

+706.4 

+136.6 

+25.0

+ 94.0

-25.0 

-42.7 

-202.7 

+239.6 

+3.0 

+2.7 

+70.2 

-67.6 

-19.3

+69.2
250 SAUGATUCK RIVER BASIN

Saugatuck River near Westport, Conn.

Location. Lat 41°10il5", long 73°22iOO", on left bank on old Ford Road (Clinton Ave.), 

400 ft downstream from West Branch, 600 ft downstream from Aspetuck River and dam of 

Dorr Co., 2 miles north of Westport, Fairfield County, and 5f miles upstream from 

mouth.

Drainage area. 77.5 sq mi.

Records available. September 1932 to September 1956.

~Gage . Water- stage recorder. Datum of gage is 18.16 ft above mean sea level, datum of

Average discharge. --24 years, 145 cfs (adjusted for storage in and diversion from Saugatuck Reservoir since October 1941).

Extremes . Maximum discharge during year, 14,800 cfs Oct. 16 (gage height, 15.93 ft, frotr 

high-water marks in gage house), from rating curve extended above 2, 4Q"> cfs on basis 

of computation of peak flow over dam at gage height 10.28 ft and contracted-opening 

determination of peak flow; minimum, 1.6 cfs Aug. 17 (gage height, 1.99 ft); minimum 

daily, 4.7 cfs Aug. 21.

1932-56: Maximum discharge, that of Oct. 16, 1955; minimum, 0.2 cfi Oct. 19, 1953 

(gage height, 1.92 ft); minimum daily, 1.0 cfs Aug. 11, 1939.

Remarks. Records good except those for period of no gage-height record, which are poor. 

Flow regulated by storage and diversion at Saugatuck Reservoir (total capacity, 

11,900,000,000 gal) and Aspetuck Reservoir. At Aspectuck Reservoir, Bridgeport Hydraulic Co. diverts an indeterminable amount of water for domestic sup-sly from about 

17 sq mi of Saugatuck River basin through Hemlocks Reservoir in Mill River basin. 

Infrequent regulation at dam of Dorr Co.

Revisions (water years) .--WSP 781: Drainage area. WSP 1301: 1936.

Rating tables, water year 1955-56 (gage height, in feet, and discharge, in cubic 

feet per second)

Oct. 1 to Nov. 4

2.5

2.7 

3.0 

3.5 

4.0

26

48

91

195

335

5.0

7.0

9.0

12.0

15.0

700

1,790

3,310

6,410

12,200

i Nov. 5 to June 13

2.5 25 4.0 310

2.7 42 5.0 670

3.0 80 6.0 1,160

3.5 180 8.0 2,500

June 14 to Sept. 30

2.1

2.2

2.3

4.0

7.5

12

2.5 

2.7 

2.9

25

45

72

Discharge, in cubic feet per second, water year October 1955 to September 1956

Day

1 

2

3 

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30 

31

Total

Mean

(t)

Oct.

60

57

52 

36

28

43

169

148

131

96

68

53

46

107

2,720

*10.600 

2,950

1,440

996

756

580

465

395

363

341

290

254

221

203

660 

1,250

25,578

825

+43.3

Nov.

720 

501

423 

1,140

2.3,90

1,240

800

630

492

419

510

458

374

475

468

550 

*630

447

380

364

304

280

255

248

230

202

180

178

152

126

15,366

512

-5.7

Dec.

116 

110

114 

126

145

128

105

93

88

85

73

73

66

61

62

62 

53

52

54

49

35

27

27

26

29

31

33

42

43

44 

44

2,096

67.6

+5.2

Jan.

51 

56

56 

50

46

44

43

44

80

136

126

200

158

94

74

70 

62

51

43

42

40

38

43

37

33

30

28

32

49

97 

116

2,069

66.7

+42.1

Feb.

f

158 

93

90

94

258

200

143

143

166

260

235

170

156

149. 

124

240

355

295

*225

163

136

110

200

270

212

230

185

5,240

181

+49.5

Mar.

141 

138

147 

195

192

166

185

280

322

250

218

208

185

255

337

262 

255

210

238

198

175

185

218

275

242

228

Z30

228

228

272 

270

6,933

224

+8.7

Apr.

268 

289

380 

358

334

307

304

468

412

422

367

313

270

250

262

433 

3S4

292

255

218

202

188

188

163

138

141

147

134

147

510

8,544

285

+1.7

May

364 

255

334 

280

250

222

510

394

275

255

230

202

200

175

168

147 

124

118

114

118

100

88

101

114

80

70

85

96

70

58 

62

5,659

183

-3.9

June

80 

105

295 

255

168

US

90

73

63

56

57

48

44

34

*35

20 

19

19

17

15

17

28

19

17

16

16

14

14

13

8^.5

1,773.5

59.1

+5.1

July

SL*° 

9.8

11 

9.8

22

54

32

21

45

41

24

19

22

54

48

27

21

18

17

15

22

26

20

18

15

20

*18

21

16

16 

12

719.6

23.2

+17.1

Aug.

ft

7.7 

6.2

8.4

12

10

9.8

9.3

6.1

7.5

8.0

11

6.8

7.5

7.5 

5.3

6.1

6.4

11

4.7

9.8

*8.0

7.5

6.8

6.8

6.1

6.8

9.8

7.5 

7.5

250.9

8.09

-2.40

Sept.

7.5 

7.5

7.5 

7

7

10

Z5

15

10

8.5

7.5

7

1^5

6.5

55

60 

4T

30

20

16

20

15

12

13

15

12

11

15

17

14

502.5

16.8

+5.4

Adjusted for diversion and change in contents in Saugatuck Reservoir

Mean 

Cfsm 

In.

868 

11.20 

12.91

506 

6.53 

7.29

Calendar year 1955 : 

Water year 1955-56 :

72.8 

0.939 

1.08

109 

1.41 

1.63

230 

2.97 

3.20

233

3.01 

3.47

287 

3.70 

4.13

179 

2.31 

2.66

Observed

Max 10,600 Min 1.9 Mean 215 

Max 10,600 Min 4.7 Mean 204

Peak discharge (base. 900 cfs). Oc

1,540 cfs (6.6 ft); Nov. 5 (7 a.m.) 2

64.2 

0.828 

0.92

40.3 

0.520. 

0.60

5.69 

0.073 

0.08

22.2 

0.286 

0.32

Adjusted

Mean 232 Cfsm 2.99 In. 4&.71 

Mean 218 Cfsm 2.81 In. 38.29

t. 16 (7 a.m.) 14.800 cfs (15.93 ft); Oct. 31 (about 4 a.m.) 

,500 cfs (8.00 ft) .

* Discharge measurement made on this day.

t Change in contents and diversion, equivalent in cubic feet per second, from Saujatuck Reservoir 

for domestic water supply. No adjustments made for Aspetuck Reservoir.

Note. No gage-height record Sept. 3-30; discharge estimated on basis of recorded range in stage, 

weather records, and records for Still River near Lanesville.
DISCHARGE MEASUREMENTS AT POINTS OTHER THAN OAGINO STATIONS 251

Measurements of streamflow in the North Atlantic slope basins, Maine to Connecticut, 

made at points other than regular gaging stations are given in the following table. Most 

of these measurements were made during periods of base flow when streamflow is primarily 

from ground-water storage. Measurements believed to have been made under base-flow conditions are identified by an asterisk (*} to the left of the discharge figure. These 

measurements when correlated with the simultaneous discharge of a nearby strerm where continuous records are available will give a picture of the low-flow potentiality of stream. 

The column headed, Measured previously" shows the water years in which measurements were 

made at the same, or practically the same, site.

Determinations of peak flow at points other than regular gaging stations are given in 

a separate table below.

Discharge measurements made at points other than gaging stations in the North Atlantic slope 

basins, Maine to Connecticut, during the water year 1956

Menunketesuek River basin, Conn

Stream

Kllllngworth 

Reservoir 

Outlet.

Menunketesuck 

River.

Tributary to

Menunketesuck 

River.

Long Island" 

Sound.

Location

Just below Kllllngworth Reservoir, 

near Kllllngworth.

Just above Kelseytown Reservoir.

Drainage 

area 

(sq ml)

"

-

Measured 

previously 

(water 

years)

1941-55 

1941-55 

1941-55

1944-55

Da^e

July 23 

Aug. 1 

Sept. 24

Oct. 13

Discharge 

<?* >

1.75 

.033 

.04

8.12

ftulnnlplae River basin. Conn.

Elghtmlle 

River.

Qulnnlplac 

River.

Lat 41°36'54", long 7Z°55'24", at 

bridge on wood's road, 1.6 miles 

northwest of Southlngton.

6.42 1954-55 Sept. 11 

Sept. 11

5.63 

5.26

Housatpnlc River basin, H. Y.

Wassalc

Creek.

Webatuck

Creek.

Tenmlle

River.

Tenmlle

River.

....do.......

Housatonlc

River.

Lat 41°47'36", long 73°33'06", at

bridge 0.7 mile southeast

of Wassalc and 1.0 mile above

confluence with Webatuck Creek.

Lat 41°46'48", long 73°33'12", at

bridge 200 ft above confluence

with Wassalc Creek and 1.6 miles

southwest of South Amenla.

Lat 41 0 46'45", long 73°33'34", at

Dutchess County highway bridge

A-30, 0.2 mile below confluence

of Wassalc and Webatuck Creeks

and 1.6 miles south of Wassalc.

36.6

81.0

120

July 12

Aug. 30

July 12

Aug. 30

July 12

Aug. 30

*10.2

*2.80

*21.8

*6.94

*37.0

*7.96

Rlppowam River basin, N. Y.

Mill River...

Mlanus River.

Byram River. .

Rlppowam 

River.

Long Island 

Sound.

Long Island 

Sound.

Lat 41°10'42", long 73°33'14", at 

bridge on Trinity Pass Rd., 1.0 

mile south of Scott Corners.

Mlanus River basin, N. 1

Lat 41 8 12'05", long 73°38'00", at 

bridge on Middle Patent Rd., 

0.6 mile east of Bedford.

Byram River basin, N. Y

Lat 41°07'28", long 73°42'09", at 

bridge on State Highways 22 and 

128, 0.6 mile east of Armonk.

13.2

f.

10.7

3.78

1903

Sept. 2 6

Sept. 26

Sept.Z6

*1.54

*Z.40

*0.64

* Base flow.

The following table contains determinations of peak discharge made at crest stage by 

indirect methods or by current meter or computed from rating curve at points other than 

regular gaging stations.

Determinations of peak discharge during water year October 1955 to September 1956

Stream

Still River..

Poquonock 

River. 

Norwalk

River. 

Five Mile

River.

Tributary to

Housatonlc 

River.

Long Island 

Sound. 

....do.......

Location

Lat 41"24'00", long 73°25'44", 500 

ft upstream from U. S. Highway 

6 bridge, at Danbury, Conn. 

Lat 41°15'16", long 73°12'27", 0.9 

mile northwest of Trumbull, Conn.

mile north of Branchvllle, Conn.

Merrltt Parkway, 1.9 miles south 

east of New Canaan, Conn.

Merrltt Parkway, 4.Z miles northwest of Stamford, Conn.

Drainage 

area 

(sq ml)

38.3 

14.4

5 85

Z6.6

Measured 

previously 

(water 

years)

Date

Oct. 16 

Oct. 16

Oct. 16

Discharge 

(cfs)

5,000

4,111

3,780
INDEX

Page 

Aberjona River at Winchester, Mass.... 113

Accuracy of field data and computed

results......................... 7-8

Acre-foot, definition of.............. 2

Adamsville Brook at Adamsvllle, R. I.. 119 

Agencies other than Geological Survey,

records collected by............ 11

Allagash River near Allagash, Maine... 15 

Ambajejus lake, Maine, contents of.... 41

Amherst, Maine, West Branch Union

River at........................ 29

Amraonoosuc River, at Bethlehem

Junction, N. H.................. 161

near Bath, N. H..................... 162

Androscoggln River, at Errol, N. H.... 56

at lewiston, Maine.................. 11

at Rumf ord , Maine.................... 58

near Auburn, Maine.................. 63

near Gorham, N. H ................... 57

Androscoggin River basin, Maine,

gaging-station records in....... 55-63

reservoirs in....................... 64

Antrim, N. H., North Branch Contoocook

River near...................... 87

Aroostook River at Washburn, Maine.... 20

Ashland, Maine, Machias River near.... 19

Ashland, N. H., Squam River at........ 79

Ashuelot River, at Hinsdale, N. H..... 185

below Surry Mountain Dam, near

Keene, N. H..................... 182

near Gilsum, N. H................... 181

South Branch, at Webb, near Marlboro, N. H....................... 184

Assabet River at Maynard, Mass........ 105

Athol, Mass., East Branch Tully River

near............................ 190

Auburn, Maine, Androscoggin River

near............................ 63

Little Androscoggin River near...... 62

Auburn, N. H. , Clark Brook at......... 98

Austin Stream at Bingham, Maine....... 48

Ayers Brook at Randolph, Vt........... 166

Aziscohos Lake, Maine, contents of.... 64

Baileyville, Maine, St. Croix River

near............................ 24

Baker River near Rumney, N. H......... 77

Barkhamsted Reservoir, Conn., contents

of.............................230,231

Barre, Mass., Ware River near.......... 199

Bath, N. H., Amraonoosuc River near.... 162

Beacon Falls, Conn., Naugatuck River

at.............................. 248

Beards Brook near Hillsboro, N. H..... 88

Bethlehem Junction, N. H., Amraonoosuc

River at........................ 161

Bingham, Maine , Austin Stream at...... 48

Kennebec River at................... 49

Birch Hill Reservoir, Mass., contents

of.............................230,231

Black River at North Springfield, Vt.. 173 

Blackberry River at Canaan, Conn...... 237

Blackstone River, at Northbridge,

Mass............................ 125

at Woonsocket, R. I................. 127

Blackwater Reservoir, N. H., contents

of.............................. 109

Blackwater River near Webster, N. H... 91 

Borden Brook Reservoir, Mass., contents of.......................230,231

Branch River at Porestdale, R. I. 

Brassua Lake, Maine, contents of......

Bristol, N. H., Smith River near......

Broad Brook, Conn., Scantic River at.. 

Brockway Mills, Vt., Williams River

at..............................

Buffumville, Mass., Little River at... 

Burlington Brook near Burlington,

Conn............................

Byfield, Mass., Parker River at.......

126

54

80

214

174

146

219

110

Canaan, Conn., Blackberry River at.... 237

Page 

Canton, Mass., East Branch Neponret

River at......................... 118

Caribou lake, Maine, contents of....... 41

Carrabasset River near North Anson,

Maine... ......................... 50

enterdale , R . I . , Woonasquatueket

River at ......................... 128

Cfs-day, definition of .................. 2

Chamberlain Lake, Maine, contents- of... 41 

Charlemont, Mass., Deerfield River at.. 194 

Charles River, at Charles River Village,

Mass... .......................... 114

at Waltham, Mass. .................... 116

Charles River basin, Mass., gagirgstation records in. ............ .114-116

harles River Village, Mass., Cterles

River at ......................... 114

herryfield, Maine, Narraguagus Fiver

at............................... 28

Chesuncook Lake, Maine, contents of.... 41

Chlcopee River at Indian Orchard, Mass. 206 

Clark Brook at Auburn, N. H. ........... 98

Clinton, Conn. , Menunketesuck River

near... .......................... 232

Clinton, Mass., South Branch Nashua

River at ......................... 102

Cobble Mountain Reservoir, Mass., contents of ....................... .230,231

Cobbosseecontee Stream at Gardiner,

Maine...... ...................... 53

Cochituate, Mass., Lake Cochituate Outlet at..... ...................... 106

Cold River at Drewsville, N. H......... 177

Coldbrook, Mass., Ware River at ........ 200

Coltsvllle, Mass., East Branch

Housatonic River at .............. 234

Columbia, Conn., Hop River near........ 137

Comerford Station Pond, Vt . , contents

..

Computations, accuracy of results of... 7-8 

Concord, N. H., Soucook River near..... 93

Concord River below River Meadow Brook,

at Lowell, .Mass. ...........;..... 107

Connecticut River, at First Connecticut

Lake, near Pittsburg, N. H....... 153

at Montague City, Mass. .............. 197

at North Stratford, N. H. ............ 154

at North Walpole, N. H. .............. 176

at Thompsonville, Conn. .............. 213

at Turners Palls , Mass ............... 193

at Vernon , Vt ........................ 180

at Wells River , Vt ................... 163

at White River Junction , Vt .......... 168

near Dalton , N . H .................... 156

Connecticut River basin, Conn. -Mass. -

N. H.-Vt,, gaging station records

in. ............................. 153-229

reservoirs in. ..................... .230-231

Connors, New Brunswick, St. Francis

River near ....................... 16

Contents, definition of ................ 3

Contoocook River, at Penacook , N. H..... 92

at Peterboro, N. H. .................. 85

near Henniker , N . H .................. 89

North Branch, near Antrim, N. H...... 87

Control , definition of ................. 3

Conway, N H. , Saco River near. ........ 67

Cooperation, record of ................. 1-2

Cornish, Maine, Ossipee River at....... 69

Saco River at ........................ 70

Cranston, R. I., Pawtuxet River at..... 130

Crystal Lake, N. H., contents of.....'.. 230

Cubic feet per second per square mile,

definition of .................... 2

Cubic foot per second, definition of... 2

Dalton, N. H., Connecticut River near.. 156

Data, accuracy of ...................... 7-8

explanation of. ...................... 3-7

Davisville, N. H., Warner River at..... 90

Dead River, at The Forks, Maine. ....... 47

near Dead River, Maine. .............. 46

253
254 INDEX

Dodham, Mass., Mother Brook at........ 115

Deerfleld River, at Charlemont, Mass.. 194 

near West Deerfield , Mass........... 196

Dennys River at Dennysville, Maine.... 25

Diamond River near Wentworth Location,

N. H............................ 55

Dickey, Maine, St. John River at...... 14

Discharge measurements:

Byram River basin................... 251

Housatonic River basin............... 251

Menunketesuck River basin........... 251

Mianus River basin.................. 251

Peak discharges..................... 251

Quinnipiac River basin.............. 251

Rippowam River basin................ 251

Note.--Streams for which only discharge measurements are available 

are not entered by name in this 

index;. 

Dover-Poxcroft, Maine, Piscataquis

River near...................... 12,33

Drainage area, definition of.......... 3

Drewsville, N. H., Cold River at...... 177

Durham, N. H., Oyster River near...... 74

East Branch (Farmington River) Reservoir, Conn., contents of.......230,231

East Greenwich, R. I., Potowomut River 

near............................

East Hampton, Conn., Salmon River

near............................

East Hartford, Conn., Hockanum River 

near............................

East Haven, Vt. , East Branch

Passumpsic River near...........

East Machias River near East Machias, 

Maine...........................

East Outlet, Maine, Moosehead Lake at.

East Pepperell, Mass., Nashua River at

Effingham Falls, N. H., Ossipee River 

at..............................

Eightmile River, at North Plain, Conn. 

East Branch, near North Lyme,

Conn............................

Elbow Lake, Maine, contents of........

Errol, N. H., Androscoggin River

at..............................

Erving, Mass., Millers River at.......

131

227

226

157

2

43

104

68

228

229

41

56

192

Falls Village, Conn., Housatonic River 

at..............................

Farmington River, at Rainbow, Conn....

West Branch above Still River, at

Riverton, Conn.................216

near New Boston, Mass .............

First Connecticut Lake, N. H., contents of......................

First Roach Pond, Maine, contents of

Fish River near Fort Kent, Maine......

Five Mile River at Killingly, Conn....

Flagstaff Lake, Maine, contents of....

Flat River Reservoir, capacity of.....

Floods, special reports on............

Forestdale, R. I., Branch River at....

Forestville, Conn., Pequabuck River

at..............................4,

Fort Kent, Maine, Fish River near..... 

St. John River at....................

Framingham Center, Mass., Sudbury

River at........................

Franklin Falls Reservoir, N. H., contents of........................

Franklin Junction, N. H., Merrimack

River at........................

French River at Webster, Mass.........

Gardiner, Maine, Cobbosseecontee

Stream at.......................

Gaylordsville, Conn., Housatonic

River at........................

Tenmile River near..................

Gibbs Crossing, Mass., Ware River at.. 

Gilsum, N. H., Ashuelot River near....

Goffstown, N. H., Piscataquog River

near............................

South Branch Piscataquog River near. 

Goose Pond, N. H.", contents of........

Gorham, N. H., Androscoggin River near 

Goss Heights, Mass., Middle Branch

Westfield River at..............

54

1

149

54

129

14

240

239

181

95

230

5

20

Grafton Pond, N. H., contents of.......

Granby, Conn., Salmon Brook near.......

Grand Lake, Maine, contents of.........

'rand Lake Stream at Grand Lake

Stream, Maine....................

Great Barrington, Mass., Gre<3n River 

, near.............................

/Housatonic River near................

Great Brook at Poquonock Bridge,

Conn.............................

Green River near Great Barrington,

Mass.............................

Grindstone, Maine, East Bramh Penobscot River at....... ............

Groveton, N. H., Upper Ammonoosuc River

near.............................

Gulf Island Pond, Maine, contents of...

Page

230

221

41

23

236

235

135

236

30

155

64

Hanover, Conn., Little.River near... 143

Hardwick, Mass., East Branch Swift

River near....................... 203

Harriman Reservoir, Vt., contents

of..............................230,231

Hartford, Conn., North Branch Park

River at......................... 224

Park River at........................ 225

South Branch Park River at........... 223

Henniker, N. H., Contoocook River near. 89 

Hillsboro, N. H., Beards Brook near.... 88

Hinsdale, N. H., Ashuelot River at..... 185

Hockanum River near East Hartford,

Conn............................. 226

Hop Brook near New Salem, Ma3S......... 202

Hop River near Columbia, Com.......... 137

Hope Valley, R. I., Wood Rivsr at...... 133

Houlton, Maine, Meduxnekeag River near. 21 

Housatonic River, at Falls Village,

Conn............................. 238

at Gaylordsville, Conn............... 240

at Stevenson, Conn................... 245

East Branch, at Coltsville, Mass..... 234

near Great Barrington, Mass.......... 235

Housatonic River basin, Conn.-Mass.,

gaging station records in.......234-248

reservoirs in........................ 249

Huntington, Mass., West Branch Westfield River at................... 210

Hydrologic conditions.................. 12

graph of............................. 12

238 Indian Orchard, Mass., Chicooee River

222 at............................... 206

Indian Pond, Maine, contents of........ 54

 217 Ipswich River, at South Middleton,

215 Mass............................. Ill

near Ipswich, Mass .................... 112

230,231 Ipswich River basin, Mass., gagingstation records in..............111-112

Jamaica , Vt., West River at............ 178

Jewett City, Conn., Quinebauj River at.12 ,151

llKeene, N. H., Ashuelot River near...... 182

126 Otter Brook near.....................4, 183

Kenduskeag Stream near Kenduskeag, 

220 Maine............................ 40

17 Kennebago Lake, Maine, contents of..... 64

18 Kennebec River, at Bingham, Maine...... 11,49

at Moosehead, Maine.................. 44

106 at The Forks, Maine.................. 45

Kennebec River basin, Maine, gaging109 station records in............... 43-53

reservoirs in........................ 54

Kettle Brook at Worcester, Miss........ 123

Killingly, Conn., Five Mile River

at............................... 149

Knightville, Mass., Sykes Brook at..... 208

Westfield River at................... 207

Knightville Reservoir, Mass., contents

of..............................230,231

64

96 Lake

201 Lake Auburn, Maine, contents of........

Lake Candlewood (Rocky River Reservoir),

Conn., contents of............... 249

Chaubunagungamaug, capacity of.... 147

Lake Cochituate Outlet at Co^hituate,

Mass............................. 106

Lake Francis, N. H., contents of......230,231

Lake Lillinonah, Conn., contents of.... 249

Lake Wentworth, N. H. , contents of..... 109
INDEX 255

Page

Lake Winnipesaukee at The Weirs, N. H. 81 

Lake Winnipesaukee Outlet at Lakeport,

N. H............................ 82

Lake Zoar, Conn., contents of......... 249

Lakeport, N. H., Lake Winnipesaukee

Outlet at....................... 82

Lamprey River near Newmarket, N. H.... 75

Lanesville, Conn., Still River near... 241 

Leadmine Brook near Thomaston, Conn... 247 

Leotninster, Mass., North Nashua River

near............................ 100

Little Androscoggin River, near

Auburn, Maine................... 62

- near South Paris, Maine............. 61

Little Ossipee River near South Limington, Maine................... 71

Little River (tributary to French

River) at Buffumville, Mass..... 146 

Little River (tributary to Shetucket

River) near Hanover, Conn....... 143

Lowell, Maine, Passadumkeag River at.. 38 

Lowell, Mass., Concord River at....... 107

Merrimack River at.................. 108

Ludlow Reservoir, Mass., contents of.230,231

MacDowell Reservoir, N. H., contents

of.............................. 109

Machias River (tributary to Aroostook

River) near Ashland, Maine...... 19

Machias River (tributary to Atlantic

Ocean) at Whitneyyille, Maine... 26 

Machias River basin, Maine, gagingstation records in.............. 26-27

Manchester, N. H., Merrimack River.

below........................... 97

Mansfield Hollow Reservoir at Mansfield Hollow, Conn.............. 140

Map of the United States.............. 9

Marlboro, N. H., South Branch Ashuelot

River near...................... 184

Mascoma Lake, N. H., contents of...... 230

Mascoma River, at Mascoma, N. H....... 170

at West Canaan, N. H................ 169

Mascoma River basin, N. H., lakes and

ponds in, contents of..........230,231

Massabesic Lake, N. H., contents of... 109 

Mattawamkeag, Maine, Mattawamkeag

River near...................... 32

Penobscot River near................ 31

Mattawamkeag River near Mattawamkeag,

Maine........................... 32

Maynard, Mass., Assabet River at...... 105

Medford, Maine, Piscataquis River at.. 36 

Meduxnekeag River near Houlton, Maine. 21 

Menunketesuck River near Clinton,

Conn............................ 232

Mercer, Maine, Sandy River near....... 51

Merrimack, N. H., Souhegan River at... 99 

Merrimack River, at Franklin Junction,

N. H............................ 84

below Concord River, at Lowell,

Mass............................ 108

near Goffs Falls below Manchester,

N. H............................ 97

Merrimack River basin, Mass.-N. H.,

gaging-station records in.......76-108

reservoirs in....................... 109

Merrymeeting Lake, N. H., contents of. 109 

Mill River at Northhampton, Mass......4, 198

Millers River, at Erving, Mass........ 192

at South Royalston, Mass............ 189

near Winchendon, Mass............... 187

Millinocket Lake, capacity of......... 20

Milo, Maine, Pleasant River near...... 35

Montague City, Mass., Connecticut

River at........................ 197

Moore Reservoir, N. H., contents of..230 ,231 

Moose Pond, Maine, contents of........ 41

Moose River, at St. Johnsbury, Vt..... 159

at Victory, Vt...................... 158

Moosehead, Maine, Kennebec River at... 44 

Moosehead Lake at East Outlet, Maine.. 43 

Mooselookmeguntic Lake, Maine, contents of........................ 64

Moosup River at Moosup, Conn.......... 150

Morris Reservoir, Conn., contents of.. 249 

Moss Brook at Wendell Depot, Mass..... 191

Mother Brook at Dedham, Mass.......... 11

Mount Hope River near Warrenville,

Conn............................ 139

Mousam River near West Kennebunk, 

Maine........................

Moxie Pond, Maine, contents of....

Page

72

54

Narraguagus River at Cherryfield,

Maine............................ 28

Nashua River, at East Pepperell, Fass.. 104 

South Branch, at Clinton, Mass....... 102

Natchaug River at Williniantic, Corn.... 141

Naugatuck River, at Beacon Falls, Conn.. 248 

near Thomaston, Conn.................. 246

Nepaug Reservoir, Conn., contents of... 231 

Neponset River, at Norwood, Mass....... 117

East Branch, at Canton, Mass......... 118

Neponset River basin, Mass., gagirgstation records in..............117-118

New Boston, Mass. , West Branch Farmington River near................ 215

New Salem, Mass., Hop Brook near....... 202

Newfane, Vt., West River at............ 179

Newfound Lake, N. H., contents of...... 109

Newmarket, N. H., Lamprey River near... 75 

Nezinscot River at Turner Center, Maine 60 

Ninemile Bridge, Maine, St. John River

at............................... 13

North Anson, Maine, Carrabassett River

' near............................. 50

North Chichester, N. H., Suncook River

at............................... 94

North Grafton, Mass., Quinsigamond

River at......................... 124

North Hartland, Vt., Ottauquechee

River at......................... 171

North Lyme, Conn. , East Branch Eightmile River near.................. 229

North Nashua River near Leominster,

Mass............................. 100

North Plain, Conn., Eightmile River at. 228 

North River at Shattuckville, Mass..... 195

North Springfield, Vt., Black River at. 173 

North Stratford, N. H., Connecticut

River at......................... 154

North Twin Lake, Maine, contents cf.... 41

North Walpole, N. H., Connecticut

River at......................... 176

North Whitefield, Maine, Sheepscot

River at......................... 42

Northampton, Mass., Mill River at......4, 198

Northbridge, Mass., Blackstone River

at............................... 125

Norton, Mass., Wading River near. ....... 122

Norwood, Mass., Neponset River at...... 117

Nubanusit Brook near Peterboro, N. H... 86

Ompompanoosuc River at Union Village,

Vt............................... 165

Order, downstream, of listing

gaging stations.................. 3

Ossipee River, at Cornish, Maine....... 69

at Effingham Falls, N. H............. 68

Otis Reservoir, Mass., contents of....230 ,231

Ottauquechee River at North Hartland,

Vt.........................'...... 171

Otter Brook near Keene , N. H........... 4, 183

Oyster River near Durham, N. H......... 74

Park River, at Hartford, Conn.......... 225

North Branch, at Hartford, Conn...... 224

South Branch, at Hartford, Conn...... 223

Parker River at Byfield, Mass.......... 110

Passadumkeag, Maine, Penobscot River

at............................... 39

Passadumkeag River at Lowell, Maine.... 38

Passumpsic River, at Passumpsic, V1;.... 160

East Branch, near East Haven, Vt..... 157

Pawcatuck River, at Westerly, R. I..... 134

at Wood River Junction, R. I......... 132

Pawcatuck River basin, R. I., gagingstation records in..............132-134

Pawtuxet River, at Cranston, R.'I...... 130

South Branch, at Washington, R. I.... 129

Pawtuxet River basin, R. I., gagingstation records in..............129-130

Pemadumcook Lake, Maine, contents of... '41

Pemigewasset River, at Plymouth, N. H.. 78

at Woodstock, N. H................... 76

Penacook, N. H., Contoocook River

at............................... 92

Pennesseewassee Lake, Maine, conterts

of............................... 64
256 INDEX

Page

Penobsoot River, at Old Town, Maine... 11 

at Passadumkeag, Maine.............. 39

at West Enfield, Maine.............. 37

East Branch, at Grindstone, Maine... 31 

near Mattawamkeag, Maine............ 31

Stillwater Branch, at Stillwater,

Maine........................... 11

Penobsoot River basin, Maine, gagingstation records in.............. 30-40

reservoirs in....................... 41

Pequabuck River at Porestville, Conn..4, 220

Peterboro, N. H., Contoocook River at. 85

Nubanusit Brook near................ 86

Piscataqua River basin, Maine-N. H.,

gaging-station records in....... 73-75

Piscataquis River, at Medford , Maine.. 36 

near Dover-Poxcroft, Maine.......... 12 ,33

Piscataquog River, near Goffstown,

N. H............................ 96

South Branch, near Goffstown, N. Y.. 95 

Pitch Reservoir, Conn., contents of... 249 

Pittsburg, N. H., Connecticut River

near............................ 153

Pittsfield, Maine, Sebasticook River

near............................ 52

Pleasant River near Milo, Maine....... 35

Plymouth, N. H., Peraigewasset River

at.............................. 78

Pomperaug River at Southbury, Conn.... 244

Poquonock Bridge, Conn., Great Brook

at.............................. 135

Potowomut River near East Greenwich,

R. I............................ 131

Presumpscot River at outlet of Sebago

Lake; Maine..................... 66

Priest Brook near Winchendon, Mass.... 188

Providence River basin, Mass.-R. I.,

gaging-station records in......123-128

Publications, on streamflow by Geological Survey..................... 8-11

by State agencies ................... 11

Putnam, Conn., Quinebaug River at..... 148

Quabbin Reservoir, Mass., contents

of.............................230,231

Quaboag River at West Brimfield, Mass. 205 

Quinebaug River, at Jewett City,

Conn............................12,151

at Putnam, Conn..................... 148

at Quinebaug, Conn.................. 145

at Westville, Mass .................. 144

Quinnipiac River at Wallingford,

Conn............................ 233

Quinsigamond River at North Grafton,

Mass............................ 124

Race Brook at Orange, Conn............ 11

Rainbow, Conn., Parmington River at... 222 

Randolph, Vt., Ayers Brook at......... 166

Rangeley Lake, Maine, contents of..... 64

Richardson Lakes, Maine, contents of.. 64 

Ripogenus Lake, Maine, contents of.... 41

Riverton, Conn., West Branch Farmington River at...................216-217

Robertsville, Conn., Still River at... 218 

Rocky Brook near Sterling, Mass....... 101

Rocky River Reservoir, Conn. See Lake

Candlewood. 

Round Pond, Maine, contents of.......

Roxbury, Conn., Shepaug River near... 

Roxoury, Maine, Swift River near.....

Royal River at Yarmouth, Maine.......

Rumford, Maine, Androscoggin River at

Rumney, N. H., Baker River near.......

Runoff in inches, definition of.......

Saco River, at Cornish, Maine ......... 70

at Hiram, Maine..................... 11

at West Buxton, Maine............... 11

near Conway, N. H................... 67

Saco River basin, Maine-N. H., gagingstation records in.............. 67-71

Safford Brook near Woodstock Valley,

Conn............................ 138

St. Croix River, at Vanceboro, Maine.. 22 

near Baileyville, Maine............. 24

St. Croix River basin, Maine, gagingstation records in.............. 22-24

St. Francis River at outlet of Glazier 

Lake, near Connors, New Brunswick. ........................... 16

Page 

St. John River, at Dickey, Maine....... 14

at Ninemile Bridge, Maine............ 13

below Pish River, at Port Kent, Maine............................ 18

St. John River basin, Maine, New

Brunswick, gaging-station records

in...........T................... 13-21

St. Johnsbury, Vt., Moose Fiver at..... 159

Salmon Brook near Granby, Conn......... 221

Salmon Palls River near South Lebanon,

Maine............................ 73

Salmon River near East Hampton, Conn... 227 

Sandy River near Mercer, Maine......... 51

Saugatuck River near Westpcrt, Conn.... 250

Saxtons River at Saxtons River, Vt..... 175

Scantic River at Broad Brock, Conn..... 214

Sebago Lake, Maine, Presumpscot River

at outlet of..................... 66

Sebasticook River near Pittsfield,

Maine............................ 52

Sebec Lake, Maine, contents of......... 41

Sebec River at Sebec, Maine............ 34

Second Connecticut Lake, N. H., contents of........................230,231

Second Lake, Maine, contents of........ 41

Second Roach Pond, Maine, contents of.. 54 

Shattuckville, Mass., North River a-t... 195 

Sheepscot River at North Whitefield,

Maine............................ 42

Shenipsit Lake, Conn., contents of..... 231

Shepaug Reservoir, Conn., contents of.. 249 

Shepaug River, at Woodville, Conn...... 242

near Roxbury, Conn................... 243

Shetucket River near Williirantic,

Conn............................. 142

Smith River near Bristol, N. H......... 80

Somerset Reservoir, Vt., ccntents of..230 ,231 

Soucook River near Concord, N. H....... 93

Souhegan River at Merrimack, N. H...... 99

South Coventry, Conn., Willimantic

River near....................... 136

South Lebanon, Maine, Salmon Palls

River near....................... 73

South Limington, Maine, Little Ossipee

River near....................... 71

South Middleton, Mass., Ipswich River

at............................... Ill

South Paris, Maine, Little Androscoggin

River near....................... 61

South Royalston, Mass., Millers River

at............................... 189

South Twin Lake, Maine, cortents of.... 41

Southbury, Conn., Pomperaug River at... 244 

Spencer Lake, Maine, contents of....... 54

Squam River at Ashland, N. H........... 79

Squannacook River near West Groton,

Mass............................. 103

Squapan Lake, capacity of.............. 20

Stage-discharge relation, definition

of............................... 3

State Farm, Mass., Taunton River-at.... 120

Sterling, Mass., Rocky Brook near...... 101

Stevenson, Conn., Housatonic River at.. 245 

Still River (Connecticut River basin)

at Robertsville, Conn............ 218

Still River (Housatonic River basin)

near Lanesville, Conn............ 241

Sudbury River at Pramingham Center,

Mass............................. 106

Sugar River at West Claremont, N. H.... 172

Sunapee Lake, N. H., contents of...... .230 ,231

Suncook River at North Chichester,

N. H............................. 94

Surry Mountain Reservoir, N. H., contents of........................230,231

Swift River (Androscoggin River basin)

near Roxbury, Maine.............. 59

Swift River (Connecticut River basin) ,

at West Ware , Mass ............... 204

East Branch, near Hardwick, Mass..... 203

Sykes Brook at Knightville, Mass....... 208

Tarbell Brook near Winchendon, Mass.... 186

Taunton River at State Farm, Mass...... 120

Taunton River basin, Mass., gagingstation records in..............120-122

Telos Lake, Maine, contents of......... 41

Tenmile River near Gaylordsville, Conn. 239 

Terms and abbreviations, definition of. 2-3 

Thames River basin, Conn.-Mass.,

gaging-station records in.......136-152
257

Page 

The Forks, Maine, Dead River at....... 47

Kennebec River at................... 45

The Weirs, N. H., Lake Winnipesaukee

at.............................. 81

Thomaston, Conn., Leadmine Brook near. 247 

Naugatuck River near................ 246

Thompson Lake, Maine, contents of..... 64

Thompsonville, Conn., Connecticut

River at........................ 213

Tilton, N. H., Winnipesaukee River at. 83 

Tower Hill Pond, N. H., contents of... 109 

Tully Reservoir, Mass., contents of..230,231 

Tully River, East Branch, near Athol,

Mass............................ 190

Turner Center, Maine, Nezinscot River

at...... ........................ 60

Turner Falls, Mass., Connecticut

River at........................ 193

Dmbagog Lake, Maine, contents of...... 64

Onion River, West Branch, at Araherst,

Maine........................... 29

Onion Village, Vt., Ompompanoosuc

River at........................ 165

Union Village Reservoir, Vt., contents

of.............................230,231

Upper Ammonoosuc River near Groveton,

N. H............................ 155

Vanceboro, Maine, St. Croix River at.. 22

Vernon, Vt., Connecticut River at...,. 180

Victory, Vt. , Moose River at.........'. 158

WSP , definition of.................... 3

Wading River, at West Mansfield, Mass. 121 

near Norton, Mass ................... 122

Wallingford, Conn., Quinnipiac River

at. ............................. 233

Waltham, Mass., Charles River at...... 116

Ware River, at Coldbrook, Mass........ 200

at Gibbs Crossing, Mass............. 201

near Barre, Mass .................... 199

Warner River at Davisville, N. H...... 90

Warrenville, Conn., Mount Hope River

near............................ 139

Washburn, Maine, Aroostook River at... 20 

Washington, R. I., South Branch Pawtuxet River at.................. 129

Watershops Pond, Mass., contents of..230,231 

Webster, Mass., French River at ....... 147

Webster, N. H., Blackwater River

near..................... ...... 91

Wells River, Vt., Connecticuc Kiver at 163 

Wells River at...................... 164

Wells River at Wells River, Vt........ 164

Wendell Depot, Mass., Moss Brook at... 191 

Wentworth Location, N. H., Diamond

River near...................... 55

Wepawaug River at Orange, Conn. .'...... 11

West Brimfield, Mass., Quaboag River

at.............................. 205

West Canaan, N. H., Mascoma River at.. 169 

West Claremont, N. H. , Sugar River at. 172 

West Deerfleld, Mass., Deerfield River

near............................ 196

West Enfield, Maine, Penobscot River

at.............................. 37

West Groton, Mass., Squannacook River

near.............................

West Hartford, Vt., White River at.....

West Kennebunk, Maine, Mousam River

near.............................

West Mansfield, Mass., Wading River

at...............................

West River (tributary to Connecticut

River) at Jamaica, Vt............

West River (tributary to Long Island

Sound) at Guilford , Conn.........

at Newfane , Vt.......................

West Ware, Mass., Swift River at.......

Westerly, R. I., Pawcatuck River

at...............................

Westfield Little River at outlet of

Cobble Mountain Reservoir, near

Westfield , Mass ..................

Westfield River, at Knightville,

Mass.............................

Middle Branch, at Goss Heights,

Mass.............................

near Westfield , Mass .................

West Branch, at Huntington, Mass.....

Westport, Conn., Saugatuck River near.. 

Westville, Mass., Quinebaug River at... 

Whigville Reservoir, Conn., contents

of...............................

White" River, at West Hartford, Vt......

White River Junction, Vt., Connecticut

River at.........................

Whitneyville, Maine, Machias River

at...............................

Wigwam Reservoir, Conn., contents

of...............................

Williams River at Brockway Mills, Vt...

Willimantic, Conn., Natchaug River at..

Shetucket River near.................

Willimantic River near South Coventry,

C onn.............................

Wilson Pond, Maine, contents of........

Winchendon, Mass., Millers River near.. 

Priest Brook near....................

Tarbell Brook near...................

Winchester, Mass., Aberjona River

at...............................

Winnipesaukee River at Tilton, N. H....

Wood River at Hope Valley, R. I........

Wood River Junction, R. I., Pawcatuck

River at.........................

Woodstock, N. H., Pemigewasset River

at. ..............................

Woodstock Valley, Conn., Safford

Brook near.......................

Woodville, Conn., Shepaug River at.....

Woonasquatucket River at Centerdale,

R. I... ..........................

Woonsocket, R. I., Blaekstone River

at...............................

Worcester, Mass., Kettle Brook

at...............................

Work, division of......................

scope of.............................

Wyman Pond, Maine, contents of.........

Yantic River at Yantic, Conn.... 

Yarmouth, Maine, Royal River at.

Page

103

167

72

121

178

11

179

204

134

211

207

209

212

210

250

144

231

167

168

26

249

174

141

142

136

41

187

188

186

113

83

133

132

76

138

242

128

127

123

1

54

152

65

ALT. S. GOVERNMENT PRINTING OFFICE: 1958 O-477707