Surface Water Supply 

of the United States 

1957

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 PAPER 1501

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 : 1959
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 (paper cover)
PREFACE

This report was prepared by the Geological Survey in cooperation 

with the States of Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont, and with other agencies, by personnel of the Water Resources Division, L. B. Leopold, chief, under 

the general direction of J. V. B. Wells, chief, Surface Water Branch, 

and F. J. Flynn, chief, Basic Records Section.

The data were collected and computed under supervision of district 

engineers, Surface Water Branch, as follows:

B. L. Bigwood__________________________Hartford, Conn. 

G. S. Hayes___________________________Augusta, Maine 

C. E. Knox______________________________Boston, Nass.
CALENDAR FOR WATER YEAR 1957

OCTOBER 1956

S M T W T P S

123456

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

JANUARY 1957

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

APRIL 1957

S M T W T P S 

123456

7 8 9 10 11 12 13 

14 15 16 17 18 19 20 

21 22 23 24 25 26 27 

28 29 30

JULY 1957

S M T W T P S 

123456

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

IV

NOVEMBER 1956

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

FEBRUARY 1957

S M T W T P S 

1 2

3456789 

10 11 12 13 14 15 16 

17 18 19 20 21 22 23 

24 25 26 27 28

MAY 1957

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 30 31

AUGUST 1957

 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

DECEMBER 1956

S M T W T P S 

1

2345678

9 10 11 12 15 14 15

16 17 18 19 20 21 22

23 24 25 26 27 28 29

30 31

MARCH 1957

S I' T W T P 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 

31

JUNE 1957

S |* T W T P 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

SEPTEMBER 1957

S K T W T P S

1234567

8 P 10 11 12 13 14

15 If 17 18 19 20 21

22 2? 24 25 26 27 28

29 30
CONTENTS

Page 

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

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

DivisIon 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.......................................... 8

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, Mains.............................................. 15

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

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

St. John River below Pish River, at Port Kent, Maine............................... 18

Aroostook River:

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

A ro o stook River at Washburn, Maine .............................................. 20

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

St. Croix River basin

St. Croix River at Vanceboro , M&lne................................................ 22

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

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

Dennys River basin

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

Machias River basin

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

East Machias River near East Machias, Maine...................................... 27

NarraRuagus 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-Poxcroft, Maine..................................... 33

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

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

Piscataquis River at Medford, Maine .............................................. 36

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

Sheepseot River basin

Sheepscot River at North Whitefleld, 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 Porks, Maine................................................. 45

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

Dead River at The Porks , 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
VI CONTENTS

Gaging-station records Continued

Presumpscot River basin Page 

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

Saco River basin

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

Piscataqua River basin

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

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

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

Merrimack 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. ..............., t .......................... 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 Falls, 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 Cochituate, 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 Forestdale, 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
CONTENTS VII

Gaging-statlon records Continued

Potowomut River basin Page 

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

Pawcatuck River basin

Pawcatuck River at Wood River Junction, R. I....................................... 132

Wood River at Hope Valley, R. I.................................................. 133

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

Poquonock River basin

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

Thames River basin

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

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

Still River (head of Natchaug 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 Willimantlc , 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

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

Connecticut River basin

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

Connecticut River below Indian Stream, near Pittsburg, N. H........................ 154

Connecticut River at North Stratford, N. H......................................... 155

Upper Ammonoosuc River near Groveton, N. H....................................... 156

Connecticut River near Dalton, N. H................................................ 157

East Branch Passumpsic River near East Haven, Vt................................. 158

Passumpsic River: 

Moose River at Victory, Vt..................................................... 159

Moose River at St. Johnsbury, Vt............................................... 160

Passumpsic River at Passumpsic , Vt............................................... 161

Ammonoosuc River at Bethlehem Junction, N. H..................................... 162

Ammonoosuc River near Bath, N. H................................................. 163

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

Wells River at Wells River, Vt................................................... 165

Ompompanoosuc River at Union Village, Vt......................................... 166

White River:

Third Branch White River:

Ayers Brook at Randolph, Vt.................................................. 167

White River at West Hartford, Vt................................................. 168

Connecticut River at White River Junction, Vt...................................... 169

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

Mascoma River at Mascoma, N. H................................................... 171

Ottauquechee River at North Hartland, Vt......................................... 172

Sugar River at West Claremont, N. H.............................................. 173

Black River at North Springfield, Vt............................................. 174

Williams River at Brockway Mills, Vt............................................. 175

Saxtons River at Saxtons River, Vt............................................... 176

Connecticut River at North Walpole, N. H........................................... 177

Cold River at Drewsville, N. H................................................... 178

West River at Jamaica, Vt........................................................ 179

West River at Newfane, Vt........................................................ 180

Connecticut River at Vernon, Vt.................................................... 181

Ashuelot River near Gilsum, N. H................................................. 182

Ashuelot River below Surry Mountain Dam, near Keene, N. H........................ 183

The Branch:

Otter Brook near Keene , N. H................................................. 184

South Branch Ashuelot River at Webb, near Marlboro, N. H....................... 185

Ashuelot River at Hinsdale, N. H................................................. 186

Millers River: 

Tarbe11 Brook near Winchendon, Mass............................................ 187

Millers River near Winchendon, Mass.............................................. 188

Priest Brook near Winchendon, Mass.............................................. 189

Millers River at South Royalston, Mass........................................... 190

East Branch Tully River near Athol, Mass....................................... 191

Moss Brook at Wendell Depot, Mass.............................................. 192

Millers River at Erving, Mass.................................................... 193

Connecticut River at Turners Falls, Mass........................................... 194

Deerfield River at Charlemont, Mass.............................................. 195

North River at Shattuckvllle, Mass............................................. 196

Deerfield River near West Deerfield, Mass........................................ 197

Connecticut River at Montague City, Mass........................................... 198

Mill River at Northampton, Mass.................................................. 199

Ware River (head of Chicopee River) near Barre, Mass............................. 200

Ware River at Coldbrook, Mass .................................................... 201

Ware River at Gibbs Crossing, Mass............................................... 202

Swift River:

Hop Brook near New Salem, Mass............................................... 203

East Branch Swift River near Hardwick, Mass.................................. 204

Swift River at West Ware, Mass................................................. 205

Quaboag River at West Brlmfield, Mass.......................................... 206
VIII CONTENTS

Gaglng-statlon records Continued

Connecticut River basin Continued Page 

Chlcopee River at Indian Orchard, Mass.. ......................................... 207

Westfleld River at Knlghtvllle, Mass............................................. 208

Sykes Brook at Knlghtvllle, Mass............................................... 209

Middle Branch Westfleld River at Goss Heights, Mass............................ 210

West Branch Westfleld River at Huntington, Mass................................ 211

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

Mass..................................................................... 212

Westfield River near Westfield, Mass............................................. 213

Connecticut River at Thompsonville, Conn........................................... 214

Scantic River at Broad Brook, Conn............................................... 215

West Branch Farmington River near New Boston, Mass............................... 216

West Branch Farmington River above Still River, at Riverton, Conn................ 217

Still River:

Mad River at Winsted, Conn................................................... 219

Still River at Robertsville, Conn.............................................. 220

Parmington River:

Burlington Brook near Burlington, Conn......................................... 221

Pequabuck River at Forestville, Conn........................................... 222

Salmon Brook near Granby, Conn................................................. 223

Farmington River at Rainbow, Conn................................................ 224

South Branch Park River at Hartford, Conn........................................ 225

North Branch Park River at Hartford, Conn...................................... 226

Park River at Hartford, Conn..................................................... 228

Hockanum River near East Hartford, Conn.......................................... 229

Salmon Rive r near East Hampton, Conn .....'..........,............................. 230

Eightmile River at North Plain, Conn............................................. 231

East Branch Eightmile River near North Lytne, Conn.............................. 232

Reservoirs in Connecticut River basin.............................................. 233

Menunketesuck River basin

Menunketesuck River near Clinton, Conn............................................. 235

ftuinniplac River basin

Quinnipiac River at Wallingford, Conn.............................................. 236

Housatonlc River basin

East Branch Housatonic River at Coltsville, Mass................................... 237

Housatonlc River near Great Barrington, Mass....................................... 238

Green River near Great Barrington, Mass .......................................... 239

Blackberry River at Canaan, Conn................................................. 240

Housatonic River at Falls Village, Conn............................................ 241

Tenmile River near Gaylordsville, Conn........................................... 242

Housatonic River at Gaylordsville, Conn............................................ 243

Still River near Lanesville , Conn................................................ 244

Shepaug River at Woodville , Conn................................................. 245

Shepaug River near Roxbury, Conn................................................. 246

Pomperaug River at Southbury, Conn............................................... 247

Housatonic River at Stevenson, Conn................................................ 248

West Branch Naugatuck River at Torrington, Conn.................................. 249

East Branch Naugatuck River at Torrington, Conn................................ 250

Naugatuck River near Thomaston, Conn............................................. 251

Leadmine Brook near Thomaston, Conn............................................ 252

Naugatuck River at Beacon Falls, Conn............................................ 253

Reservoirs in Housatonic River basin............................................... 254

Saugatuck River basin

Saugatuck River near Westport, Conn................................................ 255

Discharge measurements at points other than gaging stations.......................... 256

Index................................................................................ 258

ILLUSTRATIONS

Page

Figure 1. Gaging-station structures: A, Otter Brook near Keene, N. H.; B, Pequabuck River at Forestville, 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 1957 water year

with median discharge for 25-year period................................ 12
SURFACE WATER SUPPLY OF NORTH ATLANTIC SLOPE BASINS, MAINE TO CONNECTICUT, 1957

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, 1957. 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 13,750 gaging stations in the 48 States and at many others in 

the Territories of Alaska and Hawaii. On September 30, 1957, the Geological Survey and 

cooperating organizations were maintaining 7,030 gaging stations, including those in 

Alaska and Hawaii. Discharge measurements only were made at many other points in the 1957 

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. Organizations 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 Resources Commission, S. H. Wadhams, chairman (formerly 

State Water Commission, H. P. Koppleman, chairman), and W. S. Wise, director; city 

of Hartford, Department of Public Works, L. C. Lovell, director; 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, an? W. F. 

Neirintz, city engineer.

Maine: Maine Public Utilities Commission, T. E. Delehanty, chairman. 

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, succeeded by C. A. Sheridan; Metropolitan District Commission, C. W. Greenough, 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 39 gaging stations, of which 

2 were in Connecticut, 11 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."
2 SURFACE WATER SUPPLY, 1957, PART 1-A

The following organizations aided In collecting records:

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

Waterbury; Bridgeport Hydraulic Co.; Colllns Co.; Connecticut Light & Power Co.; 

Connecticut Power Co.; Farmlngton River Power Co.; Gullford-Chester Water Co.; and 

Rockvllle Water & Aqueduct Co.

Maine: Bangor Hydro-Electric Co.; St. Croix Paper Co.; and Union 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 Address

Connecticut a/............. Hartford..................... 203 Federal Building.

Maine b/................... Augusta...................... 420 StateJouse.

Massachusetts c/........... Boston....................... 141 Milk Street.

New Hampshire H/........... Boston, Mass................. Do.

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

Vermont.................... .... do....................... Do.

"a/ Except for Connecticut River at Thompsonvllle. 

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

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

c/ Including Connecticut River at Thompsonvllle, Conn, 

d/ Except for Androscoggin River near Errol and near Gorham, 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 

gaglng-station records may usually be obtained from the district office.

DEFINITION OF TERMS AND ABBREVIATIONS

The terms of streamflow and other hydrologlc 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 ciblc 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 gaglng-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 stem 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, 1957, PART 1-A

A, OTTER BROOK NEAR KEENE, N.H.

B, PEQUABUCK RIVER AT FORESTVILLE, CONN.

C, MILL RIVER AT NORTHAMPTON, MASS.

FIGUBE 1. GAGING-STATION STRUCTURES.
EXPLANATION OP DATA 5

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 the slope or fall is obtained by means 

of an auxiliary gage set 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 effect 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 note 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 a 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 Cctober 1 

and ends on September 30. A calendar for the water year 1957 .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 by 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 datum 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 for 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 develop 1 

ment during the period of record cause the figure t.o have little significance. Under
6 SURFACE WATER SUPPLY, 1957, PART 1-A

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

is little or no regulation; the minimum daily discharge if there is extersive 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 discharg3 corresponds to 

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

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

at the same time 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 o~der 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, 

1932, 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: "(M)" means that 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 feet 

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 annual series of 

reports.

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

discharge for the greater part of the open-water period was determined by 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 of daily discharge gives the
EXPLANATION OF DATA 7

discharge corresponding to once-daily readings of the gage, or to the mean of twice-daily 

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

readings. For periods of rapidly changing stage, the daily mean discharge is determined 

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

station description.

In the table of daily 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 daily 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 feot per 

second per square mile and runoff in inches are omitted if the drainage area includes 

large noncontributing areas, or if the average annual rainfall over the drainage basin is 

usually less than 20 inches.

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

daily discharges, not the momentary discharges when the watei> was at crest stage. 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 farentheses, 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 whieh 

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 

which 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 are given.

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

stations are listed at the end of each report.

At many gaging stations water samples are collected from the streams for the purpose of 

making chemical analyses, computing dissolved solids, suspended sediment loads, and 

particle-size distribution, or measuring water temperatures. For most of these samples the 

results are published in an annual series of water-supply papers entitled "Quality of 

Surface Waters of the United States" which is issued in four volumes. In this report 

under "Remarks" a reference is made to quality-of-water records collected at gaging stations on a regular basis and published in the quality-of-water reports. At many other 

gaging stations quality-of-water data are obtained at irregular intervals and published 

as "miscellaneous analyses" in quality-of-water reports; such records are not referred to
8 SURFACE WATER SUPPLY, 1957, PART 1-A

in "Remarks" paragraph in this report. At many gaging stations water temperature is obtained also at the time a discharge measurement is made; such temperature readings are not 

reported in the quallty-of-water annual reports.

ACCURACY OP 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 daily records is believed to be less than 5 percent; "good," less than 10 percent; "fair," less than 15 percent; and "poor," probably 

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

in 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, or unless satisfactory adjustments can be made for changes in contents of reservoirs 

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

at those stations where adjustments 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.

Many gaging stations on streams in the irrigated areas of the United States are situated 

above most of 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.

PUBLICATIONS

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 

each of the 14 parts. Beginning with the reports for 1951, the records are published in 

18 volumes, there being 2 volumes each for Parts 1, 2, 3, and 6. The boundaries of the 

various parts are indicated 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. 

B, 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. 

B, South Atlantic slope and eastern Gulf of Mexico basins, Ogee^hee River 

to Pearl River.

3. Ohio River basin, in two volumes:

A, Ohio River'basin except Cumberland and Tennessee River basing. 

B, Cumberland and Tennessee River basins.

4. St. Lawrence River basin.

5. Hudson 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.
PUBLICATIONS

505692 O - 59 - 2
10 SURFACE WATER SUPPLY, 1957, PART 1-A

Part 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 

Office, 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.

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 1684-1901, In reports of the Geological Survey 

(A = Annual Report; B - Bulletin)

Report

loth A, pt. 2

16th A, pt. 2

18th A, pt. 4

19th A, pt. 4

WSP 35 to 39.

WSP 47 to 52.

WSP 65, 66... 

WSP 75.......

Character of data

Descriptive Information only.

Descriptive Information only.

monthly discharge.

Descriptions, measurements, ratings, and monthly discharge.

east of the Mississippi River, and Missouri River and 

tributaries above Kansas River.

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 .

Descriptions, measurements, gage heights, and ratings ......

Descriptions, measurements, gage heights, and ratings ......

Descriptions, measurements, gage heights, and ratings ...... 

Monthly discharge ..........................................

Year

1884 to June 3O, 1891.

1884-92.

1888-93.

1893-94.

1895.

1896.

1895-96. 

1897.

1897.

1897. 

1898.

1898.

1898.

1899. 

1899.

1900. 

1900.

1901. 

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, 1899-1957

Year

1899

1900

19O1

1902

1903

1904

1905

1906

1907-8

1909

191O

1911

WSP

35

47

65, 75

82

97

124

165

201

241

261

£81

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

1957

WSP

1141

1171

1201

1231

1271

1331

1381

1431

1501
RECORDS OF DISCHARGE COLLECTED BY AGENCIES OTHER THAN THE GEOLOGICAL SURVEY 11

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 reexamined and 

revised where warranted. Estimates of discharge were made to fill short gaps whenever 

practical.

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 and 

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 discharges of the Connecticut River at Hartford, Conn.

WSP 847: Maximum discharges at stream 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 the water year October 1956 to September 1957 by agencies other than the Geological Survey. The records of these stations are 

not contained in publications of the Geological Survey.

Records of discharge collected toy agencies other than the Geological Survey

Stream

Fencfbscot River.

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

Location

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

Period

1931-57

1915-57

1930-57

Collected tjy

Do.

Do.
12 SURFACE WATER SUPPLY, 1957, PART 1-A

HYDROLOGIC CONDITIONS

In the area covered by this report, streamflow was near median during most of the first 

half of the 1957 water year. Beginning in April, streamflow decreased rapidly, and a 

severe drought developed, which continued throughout the rest of the year. Record-low 

monthly mean discharges occurred at long-term representative gaging stations in Maine and 

New Hampshire in April, in Massachusetts May to July, and in Connecticut June to September. 

The September mean for Quinebaug River at Jewett City, Conn., was the lowest for any month 

in a period of record of 40 years. Yearly mean discharge was record-low at St. John River 

below Pish River, at Port Kent, Maine. 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.

Piscataquis River near Doyer-Foxcroft, Maine 

Drainage area, 297 sq mi.

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

year

3000

 §

.s

Quinebaug River at Jewett City, Conn. 

Drainage area, 711 sq mi.

Ffefl

>o<

1

n

xS

|

5°!

x>

1

rn

1fy 1

1

g

1^0*

1 i^rL^nJl

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

year

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

Monthly mean discharge during water year 1967.

Figure 3. Comparison of discharge at two key gaging stations during 1957 water year with 

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

ST. JOHN RIVER BASIN

St. John River at Hinemile 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 Ninemlle Brook, 0.4 mile downstream from highway bridge 

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

Drainage area. 1,290 sq mi, approximately.

Records available. November 1950 to September 1957.

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

of 1929.

Average discharge.--6 years (1951-57), 2,128 cfs.

Extremes. Maximum discharge during year not determined,occurred about Apr. 22; minimum 

daily, 100 cfs Jan. 21, 22.

1950-57: Maximum discharge, 27,800 cfs Apr. 23, 1954 (gage height, 9.81 ft); minimum, 59 cfs Sept. 5, 1953 (gage height, 0.2S ft).

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

record, which are fair.

Rating table, water year 1956-57, except periods of ice effect (gage 

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

0.4 

.7 

1.0 

1.3 

1.6 

£.0

85 

150 

£40 

368 

551 

882

£.5 

3.0 

4.0 

5.0 

6.0 

7.1

1,430

£,180

4,230

7,050

10,700

15,000

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

l

£

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

Cfsm

In.

Oct.

775

698

68£

801

758

732

8H5

4,570

4,980

3,690

£,730

2,130

1,740

1,470

1,280

1,150

1,040

993

928

819

732

674

625 

581

558

518

478

460

447

435

418

38,717

1,249

0.968

1.12

Nov.

401

390

379

358

339

339

330

320

316

291

191

263

316

255

295

339

429

550

650

749

758

930

1,160 

1,000

880

830

790

790

800

760

16,198

540

0.419

0.47

Dec.

730

705

675

635

64O

620

580

550

540

545

525

505

490

470

480

465

440

435

440

425

420

410

405 

400

395

390

380

370

360

350

340

15,115

488

0.378

0.44

Jan.

320

295

265

£50

230

205

190

176

166

156

144

134

124

118

112

110

110

106

104

10£

100

*100~

110 

176

255

320

385

390

395

390

385

6,423

207

0.161

0.19

Feb.

380

370

350

3£5

H85

265

240

230

215

194

170

158

146

*142

132

120

118

116

112

110

110

110

112 

110

110

106

Ho

124

_

5,070

181

0.140

0.15

Mar.

124

130

134

150

160

176

186

182

180

182

194

210

240

285

340

420

520

625

*730

785

800

790

725 

705

700

700

690

680

675

665 

650

13,733

443

0.343

0.40

Apr.

640 665"

700

715

740

725

705

690

700

705

715

740

750

750

730

725

705

1,180

3,310

7,000

10,000

15,000

13,400 

12,100

11,000

9,800

8,600

9,300

10,400

9,200

132,390

4,413

3.42

3.82

May

7.200

6,300

5,400

4,700

4,100

3,700

3,500

3,600

4,100

4,300

3,750

3,280

£,930

2,640

2,400

2,800

3,500

2,750

*2,330

2,000

1,700

1,470

1,330 

1,380

1,540

1,390

1,250

2,640

4,330

3,460

2 ,580

98,350

3,173

2.46

2.84

June

2,000

1,760

3,020

3,140

2,460

1,860

1,760

£,840

2,730

£,080

1,620

1,250

1,O9O

1,030

1,650

2,840

2,480

1,800

1,390

1,260

1,280

1,070

931 

946

1,150

1,180

2,820

3,080

2,480

4,580

59,383

1,979

1.53

1.71

July

4,750

3,740

3,830

2, £10

1,940

2,390

*2,3£0

1,8£0

1,350

1,250

1,470

1,090

873

715

649

950

1,280

984

758

566

447

423

511 

618

566

484

406

344

320

1 2OO 

1*870

42,124

1,359

1.05

1.21

AJg.

1,820

1,430

1,110

3,260

g,540

5,280

3,490

?,250

1,510

1,100

873

740

715

625

531

478

435

396

358

339

299

263

233 

213

194

179

168

152

144

134

122

35,381

1,141

C.884

1.02

Sept.

117

113

136

400

928

766

682

566

435

344

291

251

226

213

216

240

*290

566

603

472

401

550

1,940 

5,600

3,060

2,320

1,800

1,390

1,100

90O

24,916

831

0.644

0.72

Calendar year 1956: Max 14,1OO Min 158 Mean 1,794 Cfsm 1.39 In. 18.95

Water year 1956-57: Max 15,OOO Mln 1OO Mean 1,336 Cfsm 1.04 In. 14.0?

Peak discharge (base, 10,000 cfa) About Apr. 22 (time and discharge unknown). __

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 18, 19, Nov. 22 to Apr. 19. No g-age-height 

record Apr. 20 to May 19; discharge estimated on basis of weather records and records fcr nearby 

streams.
ST. JOHN RIVER BASIN

St. John River at Dickey, Maine

Location. Lat 47°06'40", long 69 8 05'15", on right bank at Dickey, Aroo-5took County,

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

Drainage area. 2,700 sq mi, approximately.

Records available. July 1910 to November 1911 (published as "near Dick3y"), September 

1946 to September 1957.

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

1910, to Nov. 21, 1911, staff gage at site 1,000 ft downstream at different datum.

Average discharge. 11 years (1946-57), 4,479 cfs.

Extremes. Maximum discharge during year, 34,200 cfs Apr. 23 (gage height, 11.73 ft); 

maximum gage height, 13.57 ft Apr. 20 (backwater from ice); minimum daily discharge, 

200 cfs Jan. 22.

1910-11, 1946-57: Maximum discharge, 68,700 cfs May 9, 1947 (gags 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 gaga-height record, 

which are fair.

Revisions. WSP 1141: Drainage area.

Rating table, water year 1956-57, except period of ice effect (gage 

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

1.5 

1.7 

2.0 

2.5 

3.0 

4.0

ZOO

350

630

1,190

1,860

3,600

5.0

6.0

8.0

10.0

11.6

5,810

8,500

15,200

24,500

33,400

Discharge, in cubic feet per second, water year October1956 to September 1957

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.

1,610 

1,520

1,510

1,620

1,610

1,600 

1,840

7.900 

6,800

4,550

3,760

3,160

2,800

2,500

2,230

2,130

1,940

1,750

1,640

1,570

1,440

1,320

1,220 

1,170

1,170

1,110

1,060 

986

950 

928

9.P.S.

66,360

2,141

0.793

0.91

Nov.

873 

851

819

777

756

735 

714

714 

693

672

492

530

511

286

TO)

473

580

680

725

840

1,050

1,320

1,650 

2.680

2,220

1,780

1,650 

1,520

1,450 

1,380

29,831

994

0.368

0.41

Dec.

1.510 

1,260

1,230

1,190

1,140

1,120 

1,110

1,120 

1,080

1,020

1,000

1,010

950

895

885

875

885

860

790

775

765

745

715 

705

670

660

630 

590

580 

570

5-£Q_

27,695

893

0.331

0.38

Jan.

550 

530

510

500

490

480 

475

465 

*455

435

410

350

310

300

285

270

255

235

220

215

205

200

235 

300

425

550

735 

840

905 

930

940_

14,005

452

0.167

0.19

Feb.

930

aSs

840

755

735

660 

610

560 

500

465

435

390

360

340

335

325

320

320

310

*300

300

285

280 

280

270

300

335 

350

-

12,775

456

0.169

0.18

Mar.

360 

365

375

390

435

490 

590

660 

680

670

660

630

590

600

620

640

670

695

735

830

950

1,140

1.190 

1,180

1,140

 1,110

1,110 

1,110

1,120 

1,110

1,110

23,955

773

0.2S6

0.33

Apr.

1.110 

1,110

1,120

1,130

1,140

1,140 

1,190

1,180 

1,140

1,140

1,130

1,140

1,220

1,240

1,270

1,290

1,350

1,580

2,510

4,540

8,200

24,500

55.400 

51,700

27,600

25,600

21,200 

22,000

24,200 

23,200

268,270

8,942

5.51

5.69

May

iftfoTJ

12)700

10,500

9,670

9,010 

8,580

8,580 

9,510

9,750

8,800

7,850

6,970

6,200

5,930

*6,630

8,080

7,680

6,420

5,430

4,740

4,280

3,880 

3,860

4,120

3,600

5.400 

5,470

9,620 

8,850

6,710

242,180

7,812

2.89

5.55

June

5,400 

4,780

6,580

7,820

6,420

5,010 

4,520

5,670 

6,480

5,550

4,280

3,520

3,100

3,080

4,740

6,910

6,780

5,220

4,740

4,780

4,200

3,660

5,170 

2,870

2,730

2,850

5,400 

5,280

5,760 

8.980

148,080

4,956

1.85

2.04

July

12.100 

10,200

7,680

6,150

5,380

6,070 

6,480

5,150 

4,260

*5,780

4,050

4,070

5,210

2,650

2,350

6,880

6,970

5,580

5,740

2,830

2,520

2,150

2,510 

2,660

2,580

2,170

1,830 

1,590

1.460 

1,730

3,590

13<,150

4,527

1.60

1.84

Aug.

4,370 

5,880

5,120

2,890

6,740

8.030 

6,100

4,390 

5,500

5,050

2,600

2,410

2,170

1,890

1,660

1,450

1,290

1,180

1,060

962

895

840

756 

662

620

580

540 

502

464 

426

451

69,228

2,233

0.827

0.95

Sept.

376 

342

376

550

1,120

2,190 

1,860

1,540 

1,290

*1,090

906

788

735

1,020

1,150

998

1,250

1,460

1,620

1,610

1,410

1,650

5,060 

6,540

7,250

5,570

4,260 

5,400

2,750 

2,270

60,351

2,012

0.745

0.85

Calendar year 1956 : Max 26,8OO Min 286 Mean 3,253 Cfsm 1.20 1-^. 16.42

Water year 1956-57 : Max 33,400 Kin 200 Mean 3,005 Cfsm 1.11 In. 15.08

Peak discharge (base, 27,000 cfs). Apr. 23 (5 a.m.) 34,200 cfs (11.73 ft).

* Discharge measurement made on this day.

.

er records, and records 

charge estimated'on basis
ST. JOHN RIVER BASIN 15

Allagash River near Allagash, Maine

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

Allagash Inn and 3 miles upstream from mouth and village of Allagash, Aroostook 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 1957.

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

x929. July 1910 to November 1911 staff gage at site 3 miles downstream at different 

datum.

Average discharge. 26 years (1931-57), 1,881 cfs.

Extremes.--Maximum discharge during year, 7,740 cfs Apr. 29 (gage height, 6.69 ft); minimum daily, 144 cfs Jan. 19-21.

1910-11, 1931-57: 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 1956-57, except period of ice effect ( 

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

1.7 

1.9 

2.1 

2.4 

3.0

137 

208 

299 

48O 

99O

3.5 

4.0 

5.O 

6.0

6.7

1,59O 

2,300 

4,000 

6,O90 

7,760

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Cfam

In.

Oct.

394 

388

406

406

400

377 432"

722

845

766

706

656

615

576

546

509

5O9

524

495

480

466

460

453

466 

502

487

480 

473

453

439

426

15,857

512

0.410

0.47

Nov.

419 

412

412

394

377

359

348

348

348

348

31O

342

342

284 304"

371

377

386

375

370

425

570

750

655 

665

640

715 

625

545

510

13,368

446

0.357

0.40

Dec.

485 

4T5C

475

465

455

46O

455

455

445

445

455

44O

440

445

430

420

405

400

395

375

37O

37O

365

36O 

355

35O

340 

320

315

315

310

12,595

406

0.325

0.37

Jan.

29O 

275

270

265

26O

255

255

250

*25O

240

235

210

190

176

158

154

150

148

144

UK

144

150

170

210 

240

235

235 

235

230

230

23O

6,628

214

0.171

0.20

Feb.

235 

235

235

235

235

230

225

225

22O

220

22O

215

215

215

21O

21O

215

225

235

*23O

225

220

215

21O 

210

215

235 

27O

_

6,285

224

0.179

0.19

Mar.

3OO 

340

335

325

320

315

310

305

310

330

355

380

410

440

465

475

48O

485

4T50"

44O

4OO

375

355

330 

3O5

*285

270 

265

260

255

250

10,950

353

0.282

0.33

Apr.

245 

260

26O

250

255

235

250

315

31O

305

300

285

275

270

265

260

255

28O

335

410

900

2,90O

4,630

5,170 

5,250

5,410

5,960 

6,820

7.61O

7,610

57,860

1,929

1.54

1.72

May

6.91O 

6,200

5,52O

5,O2O

4,790

4,490

4,35O

4,510

4,790

4,730

4,370

4,100

3,850

3,590

*3,56O

3,980

3,650

3,340

3,03O

2,820

2,610

2,420

2,300

2,280 

2,1BO

1,970

1.890 

2,456

2,740

2,320

2,08O

112,840

3,640

2.91

3.36

June

1,920 

1,940

2.650

2,360

2,O9O

1,89O

2,040

2,360

2,O6O

1,800

1,67O

1,550

1,470

1,56O

2,320

2,320

1,930

1,720

1,800

2,O30

1,820

1,580

1,450

1,360 

1,280

1,330

1,560 

1,490

1,490

1,750

54,570

1,819

1.46

1.63

July

1.710 

1,546

1,420

1,360

1,370

1,500

1,360

1,180

1,090

1,08O

990

920

854

791

809

1,100

1,OOO

863

783

714

656

689

766

757 

722

714

706 

664

664

800

1,030

30,602

987

0.79O

0.91

Aug.

1,C1O 

S30 eai

s«o

1.C90

1,060

1,OOO £-50

£81

f54

783

766

722

664

639

eos

569

538

516

£02

4B7

466

439

426 

412

406

400 

377

359

353

546

20,196

ess

0.526

0.61

Sept.

337 

331

353

553

783

1,030

845

714

615

*546

480

466

453

584

561

480

502

502

453

412

426

631

940

1.520 

1,080

900

800 

706

631

569

19,003

633

0.506

0.56

Calendar year 1956: Max 9,230 Min 154 Mean 1,230 Cfsm 0.984 In. 13. 4O

Water year 1956-57: Max 7,610 Mln 144 Mean 989 Cfsm O.791 In. 10.75

Peak discharge (base, 5,70O cfs). Apr. 29 (5 a.m.) 7,740 cfs (6.69 ft).

* Discharge measurement made on this day.

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

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

(International gaging station)

Location. Lat 47°12'25", long 68"57'26", on left bank at outlet of Glazier 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 1957.

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

Average discharge. 6 years, 860 cfs.

Extremes.--Maximum discharge during year, 5,280 cfs May 1 (gage height, 8.70 ft); minimum, 

98 cfs Jan. 21 (gage height, 2.20 ft).

195L-57: Maximum discharge, 8,770 cfs May 6, 1955 (gage height, 11.53 ft): minimum, 

that of Jan. 21, 1957.

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 1956-57 (gage height, In feet, 

and discharge, in cubic feet per second)

2.2 98

2.3 119

2.5 170

3.0 334

3.5 551

4.0 

5.0 

7.0 

8.0 

8.7

827

1,530

3,400

4,480

5,280

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

262

255

242 

232

226

205

211

236

259

301

342

361

364

*36T

334

327

3O4

301

287

266

255

246

232

229

217

202

199

199

193

187

185

8,020

259

0.522

0.60

Nov.

185

179

176 

176

173

170

170

170

170

167

159

159

156

045.

148

156

162

156

153

145

148

170

179

199

199

202

223

223

223

223

5,264

175

0.353

0.39

Dec.

220 2To"

205 

202

199

190

190

185

179

173

170

170

170

170

167

164

162

167

162

159

156

150

145

142

142

142

142

142

140

142

14O

5,207

168

0.339

0.39

Jan.

137

135

131 

126

124

121

119

119

119

119

119

117

119

115

115

113

115

113

*104

102

100

100

115

115

115

113

115

117

119

119

124

3,634

117

0.236

0.27

Feb.

135

137

142 

142

142

142

142

142

140

142

140

135

128

126

124

121

119

119

117

115

113

*108

108

108

111

117

121

119

-

3,555

127

0.256

0.27

Mar.

117

119

117 

115

113

111

108

106

108

119

117

111

113

113

108

113

113

115

113

115

*119

121

121

124

124

128

*131

131

131

133

133

3,660

118

0.238

0.27

Apr.

131 140"

142

140

137

148

156

156

156

162

162

159

164

167

170

173

185

199

229

301

467

954

1,980

3,130

3,870

4,170

4,290

4,460

4,730

5,140

36,568

1,219

2.46

2.74

May

5,250

4,970

4,450 

3,900

*3,420

3,050

2,810

2,650

2,630

2,730

2,770

2,640

2,450

2,220

2,060

1,900

1,750

1,610

1,460

1,320

1,210

1,100

1,010

957

908

864

839 852"

883

920

926

66,509

2,145

4.32

4.99

June

908

908

926 

977

1.050

1,020

1,020

1,020

1,010

996

951

908

839

308

814

808

784

754

725

708

665

627

591

566

531

522

512

517

556

764

23,765

792

1.60

1.78

July

1,210

1,560

1,650 

1,550

1,410

1,330

1,260

1,210

1,130

1,040

996

977

964

939

991

1,090 * ,330

1,510

1,470

1,340

1,190

1,070

989

977

996

989

945

877

808

771

731

35,280

1,138

2.29

2.65

Aug.

708 692"

681 

676

659

633

601

561

526

517

470

453

418

393

376

357

334

315

297

283

262

252

236

226

217

208

199

193

182

173

17J>

12,268

396

0.798

0.92

Sept.

159

153

150

153

173

190

199

214

226

226

223

220

217

229

226

217

220

217

220

229

236

249

301

414

606

777

852

827

777

719

9,819

327

0.659

0.74

Calendar year 1956 : Max 4,050 Min 100 Mean 553 Cfsm 1.11 In. 15.18

Water year 1956-57 : Max 5,250 Min 100 Mean 585 Cfsm 1.18 In. 16.01

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

Fish River near Fort Kent, Maine

17

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

bridge at Fort Kent Wills, 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, Way to November 1911, September 1929 to 

September 1957. 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, 1929-57), 1,338 cfs.

Extremes. Waximum discharge during year, 6,120 cfs Apr. 30 to May 1 (gage height, 7.68 ft); 

minimum, about 117 cfs Apr. 4 (backwater from ice).

1903-8, 1911, 1929-57: 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 periods of ice effect, which are fair. Large 

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

Revisions. WSP 1001: Drainage area.

Rating tables, water year 1956-57, except periods of Ice effect (gage 

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

Oct. 1 to May 1 May 1 to Sept. 30

2.5 

2.7 

3.0 

3.5

145

209

332

604

4.0 

5.0 

6.0 

7.7

980 

2,OOO 

3,420 

6,150

2.6 

3.0 

3.5 

4.0

193

354

625

990

5.0 

6.0 

7.7

2,000

3,420

6,150

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

175 

175

172

169

163

157 189"

232

2TT

209

206

202

2O6

206

202

199

199

192

185

182

182

178

178

199

202

202".

199

195

192

195 

199

5,958

192

0.220

0.25

Nov.

199

195

192

189

185

182

182

182

178

175

169

178

166

154

166

175

185

175

172

172

175

341

306

314

360

315

340

355

404

414

6,895

230

0.264

0.29

Dec.

414 

415

420

435

*460

465

425

37O

345

335

330

330

325

320

325

320

315

310

310

310

305

305

305

31O

305

300

305

300

295

295 

295

10,599

342

0.393

0.45

Jan.

295 295"

290

29O

290

290

285

285

280

*280

275

270

270

260

250

230

225

215

215

210

2O5

215

215

225

230

230

235

230

230

225 

230

7,770

251

0.288

0.33

Feb.

225" 230 

220

220

215

215

215

210

2O5

205

200

20O

205

205

196

192

190

182

178

178

176

176

172

172

176

*205

230

230

5,623

201

0.231

0.24

Mar.

230 

225

215

215

210

2O5

2O5

205

205

210

225

220

22O

220

225

235

245

250

255

270

280

285

290

290

310

315

*325 310"

290

290

285

7,760

250

0.287

0.33

Apr.

280 

590

300

315

330

356

379

399

404

419

424

445

483

512

512

554

631

757

913

1,130

1,840

2,480

3,180

3,980

4,510

4,830

5,050

5,390

5,840

6,O6O

52,993

1,766

2.03

2.26

May

6,100 

5,930

5,720

*5,520

5,340

5,130

4,920

4,810

4,720

4,640

4,430

4,25O

4,010

3,990

*3,640

3,470

3,310

3,070

2,90O

2,72O

2,530

2,36O

2,230

2,090

1,980

1,880

1,810

1,900

1,820

1,760 

1,700

110,680

3,570

4.10

4.73

June

1,640 

1,610

1,620

1,57O

1,510

1,450

1,510

1,530

1,490

1,440

1,400

1,360

1,320

1,320

1,410

1,410

1,340

1,320

1,300

1,340

1,320

1,300

1,25O

1,190

1,130

1,130

1,120

1,080

1,070

1.050

40,530

1,351

1.55

1.73

July

982 

9^2

889

849

857

897

841

818

*811

811

811

762

728

715

762

735

688

663

644

613

583

613

688

755

742

722

695

688

663

663 

650

23,260

750

0.861

0.99

Aug.

656 

63T

625

625

589

571

554

525

514

559

542

525

492

475

448

422

397

388

364

345

327

309

305

288

271

267

251

228

228

218 

204

13,143

424

O.487

0.56

Sept.

193

193

196

228

240

244

232

224

*210

200

196

193

2OO

204

193

204

204

193

193

193

196

244

309

332 309"

296

271

263

259

255

6,867

229

0.263

0.29

Calendar year 1956: Max 4,840 Mln 84 Mean 840 Cfsm 0.964 In. 13.12

Water year 1956-57: Max 6,10O Mln 154 Mean 8OO Cfsm 0.918 In. 12.45

* Discharge measurement made on this day.

Mote. Stage-discharge relation affected by Ice Nov. 26-28, Dec. 2 to Apr. 5,
18 ST. JOHN RIVER BASIN

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

(International gaging station)

Location. Lat 47°15'25", long 68°35'35", on right bank at Port Kent, Aroostook County, a 

quarter of a mile downstream from Pish River.

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

Chamberlain Lake through Telos Canal).

Records available. October 1926 to September 1957.

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. 31 years, 9,438 cfs.

Extremes. Maximum discharge during year, 50,200 cfs ADI-. 24 (gage height, 15.54 ft); 

maximum gage height, 15.78 ft Apr. 22 (backwater from ice); minimuTi daily discharge, 

805 cfs Jan. 21, 22.

1926-57: 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 1956-57, except periods of Ice effect (gage height, 

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

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

0.8 

1.0 

1.2 

1.5 

2.0

755

895

1,040

1,270

1,710

3.O 

4.0 

5.0 

6.5

2,300

4,300

6,200

10,100

1.4 

2.0 

3.0

4.0 

5.O 

6.5

1,210

1,800

2,980

4,540

6,560

10,100

8.0

10.0

12.0

14.0

15.4

14,900

22,900

32,000

42,000

49,400

Note. Same as following table 

above 6.5 ft. 

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Cfsra

In.

Oct.

2,670 

2,430

2,310

2,210

2,200

2,200

2,330

3,680

10.500 

9,830

7,340

5,980

4,950

4,280

3,860

3,540

3,260

3,120

2,900

2,750

2,580

2,440

2,320

2,360

2,260

2,260

2,190

2,110 

2,020

1,980 

1.95C

106,590

3,436

0.604

0.70

Nov.

1,910 

1,870

1,830

1,760

1,720

1,700

1,660

1,630

1

1,600 

1,590

1,580

1,500

1,380

1,470

1,240

.160

V353

,520

,490

,540

,540

,85C

2,750

3,120

3,280

3,420

3,530

3,920 

3,810

3,520

62,270

2,076

0.365

0.41

Dec.

3.220 

2,900

2,830

2,760

2,620

2,520

2,410

2,300

2,200 

2,110

2,030

1,950

1,890

1,880

1,850

1,810

1,790

1,750

1,720

1,700

1,670

1,640

1,620

1,600

1,560

1,530

1,500

1,480 

1,470

1,420 

1 40C * 

61,130

1,972

0.347

0.40

Jan,

1

1,360 

1,340

1,290

1,240

1,190

1,150

1,090

1,040

1.000 *960

935

925

910

895

880

865

855

845

830

820

805

555

945

1,060

1,140

1,170

1,240

1,330 

1,410

1,520 

1.580

33,425

1,078

0.189

0.22

Feb.

1.590

1,550

1,510

1,480

1,400

1,270

1,180

1,160

1,130 

1,110

1,100

1,070

1,060

1,040

1,030

1,020

1,010

1,010

*1,000

995

965

935

930

925

930

935

945

950

 

31,230

1,11"

0.196

0.2C

Mar.

l'l20

1,130

1,160

1,180

1,180

1,240

1,280 

1,400

1,390

1,390

1,400

1,430

1,480

1,550

1,600

1,660

1,730

1,790

1,860

1,940

2,030

2 060

2^050

1,990

*1,960

1,960 

1,950

1,930 

1,910

48,910

1,578

0.277

0.32

Apr.

1.890 

1,890

1,900

1,950

2,000

2,100

2,200

2,160

2,250 

2,240

2,260

2,300

2,320

2,380

2,450

2,600

3,000

3,700

4,800

6,200

9,400

22,900

48,000

49,000

46,200

42,600

40,400

42,100 

45,900

46,400

445,490

14,850

2.61

2.91

May

42,800 

37,700

32,800

*28,600

25,900

24,300

23,000

22,600

23,300

24,100

22,900

21,100

19,500

17,700

16,400

16,900

17,900

16 , 900

14,500

12,800

11,600

10,600

9,840

9,450

9,500

9,380

9.020

10,200 

15,300

16,000

13,100

585,690

18,890

3.32

3.83

June

11,100 

10,100

11,600

15.600

12 , 700

10,900

9,960

11,000

12,000 

11,200

9,690

8,610

7,890

7,620

8,880

11,700

12,200

10,500

9,330

9,840

9,480

8,590

7,760

7,090

6,680

6.630

7,200

8,400 

9,450

11,700

293,400

9,780

1.72

1.92

July

17.000 

16,300

13,100

11,200

9,960

10,200

10,800

9,760

*8,610 

7,820

7,480

7,660

6,900

6,100

5,890

8,570

10,900

9,790

7,940

6,580

5,620

5,070

5,430

5,890

5,910

5,450

4,980

4,610 

4.260

4,330

5,110

249,220

8,039

1.41

1.63

Aug.

7,390 

7,230

6,470

5,910

7,010

11.10C

7*710

6,250 

6,300

5,530

5,130

4,810

4,280

3,860

3,520

3,230

2,950

2,750

2,590

2,450

2,280

2,140

2,000

1,900

1,830

1,780

1,650 

1,570

1,480

1.40C

134,020

4,323

0.760

0.88

Sept.

1,320

1,280

1.270

1,510

2,020

3.44O

3,990

3,340

2,940 

*2,570

2,280

2,070

2,000

2,110

2,530

2,400

2,340

2,640

2,710

2,840

2,680

2,870

4,140

7,570

9,860

8,780

7,300

6,040 

5,150

4,490

106,480

3,549

0.624

0.70

Calendar year 1956: Max 47,800 Min 790 Mean 6,430 Cfam 1.13 In. 15.38

Water year 1956-57: Max 49,000 Min 805 Mean 5,912 Cfsm 1.04 In. 14.12

Peak discharge (base, 45,000 cfs). Apr. 24 (2:30 a.m.) 50,200 cfs (15.54 ft)._______________

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 25, 26, Dec. 3 to Apr. 22 (no gage-height 

record Nov. 4, 26, Dec. 30 to Jan. 9).
ST. JOHN RIVER BASIN 19

Machias River near Ashland, Maine

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

0.8 mile upstream from mouth and 1-| miles west of Ashland, Aroostook County.

Drainage area.--330 sq mi (revised).

Records available. June 1951 to September 1957.

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

Average discharge. 6 years, 547 cfs.

Extremes. Maximum discharge during year, 3,730 cfs Apr. 24 (gage height, 4.78 ft); maximum gage height, 5.20 ft Dec. 3 (backwater from ice); minimum discharge, 11 cfs 

Sept. 6.

1951-57: 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 periods 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.

Hating tables, water year 1956-57, except periods of Ice effect 

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

Oct. 1 to Dec. 3

0.8 84

1.0 144

1.2 222

Dec. 4 to Sept. 30

19

157

280

445

2.0 

2.5 

3.0 

4.0 

4.7

735

1,180

1,630

2,720

3,620

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

108

114

114

111

103

121

180

193

T54

169

158

144

137

134

131

 114

108

106

103

100

15B~ 98

158

180

176

180

184

184

180

173

4,351

140

-

-

Sov.

169

166

158

148

141

134

128

114

100

95

106

95

87 15B"

102

100

98

95

92

89

92

110

200 19"5

192

188

192

188

188

184

4,055

135

-

-

Dec.

176 170"

168

160

158

158

158

154

154

150

150

154

144

124

124

134

138

120

118

116

112

104

92

90

88

85

82

82

82

82

85

3,912

126

.

-

Jan.

80

70

68

66

68

66

66

66

63

 57

52

48

38

40

38

41

46

45

40

29

24

23

52

124

120

120

120

118

118

118

118

2,142

69.1

.

-

Feb.

118

T5?

108

100

90

85

82

80

70

72

72

70

66

57

52

50

48

50

45

40

29

27

26

25

26

*26

30

38

-

__ _ _ _ .

1,695

60.5

.

-

Calendar year 1956: Max 3,370 Mln 18

Mar.

31

31

33

34

38

38

36

38

40

52

66

95

124

164

205

230 225"

225

215

205

198

194

188

172

158

150

144

*128

124

118

H6

3,815

123

-

Apr.

110

IT?

138

172

164

180

194

205

215

225

220

225

225

240

260

275

290

330

415

531

1,010

1,690

2,120

5,550

3, 520

3,160

2,820

2,720

2,800

3,080

31,196

1,040

-

May

5,000

2,600

2,110

1,810

1,580

1,360

945

1,100

1,340

1,400

1,420

1,290

1, 120

865

595

 883

946

755

485

510

484

485

495

440

510

385

450" 270

470

440

550

31,133

1,004

-

June

365

164

530

285

420

585

455

5?3" 665

374

363

395

355

530

255

270

160

500

205

390

400

325

440

425

101

300

455

605

555

85

11,482

383

-

Mean 364 Cfsm 1.10

July

820

740

545

80

510

235

75

61

*46

50

43

50

140

124

124

95

98

75

59

55

4052"

72

130

198

50

52

59

63

134

305

5,180

167

-

Aug.

29C

27?

26?

29C

29C

26f

253

244

24F

23E

161 ive

16E

164

161

16]

157

157

126

144

144

137

134

13]

124

124 lie

lie

104

9F

63

5,518

17fi

-

Sept.

45

41

57

55

40

31

29

26

25

24

*24

24

24

25

23

24

27

25

25

24

24

29

92

118

90

75

61

52

46

41

1,246

41.5

-

In. 15.08

Water year 1956-57 : Max 3,550 Min 23 Mean 290 Cfsm 0.879 In. 11.89

Peak discharge (base, 3,200 cfs). Apr. 24 (12 m.) 5,750 efs (4.78 ft)._________

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 11, 12, Nov. 14 to Apr. 18.
20 ST. JOHN RIVER BASIN

Aroostook River at Washburn, Maine

Location.--Lat 46°46'35", 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.--1,652 sq mi (revised).

Records available.--August 1930 to September 1957.

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.

Aye rage di s charge.--27 years, 2,524 cfs (unadjusted).

Extremes.--Maximum discharge during year, 13,500 cfs Apr. 24 (gage height, 7.72 ft); minimum, 135 cfs Sept. 16.

1930-57: Maximum discharge, 37,800 cfs Mar. 22, 1936 (gage height, 13.80 ft, present datum); 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. Flow 

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 power1 , and Machias and Rowe Lakes (combined capacity, about 280,000,000 cu ft) used for log-driving.

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

Rating tables, water year 1956-57, except period of ice effect (gage 

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

Oct. 1 to Apr. 19 Apr. 20 to Sept. 30

1.7 

2.0 

2.5

3.0

4.0

4.1

250

455

930

1,560

3,160

3,340

1.4 

1.7 

2.0 

2.5 

3.0

110

290

520

1,010

1,640

4.0 

5.0 

6.0 

7.0 

7.6

3,210

5,300

7,990

11,000

13,100

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

630 

657

720

730

684

639

648

930

1,100

1,090

930

810

720

702

740

*720

693

603

540

506

480

455

464

675

1,190

1,570 

1,250

1,080

985

919 

831

24,491

790 

-11

Nov.

810 

740

720

820

941

930

886

831

800

740

702

684

702

675

685

750

790

800

790

800

830

985

1,560

1,330

1,160

1,050 

1,010

1,020

950

910

26,401

880 

-82

Dec.

770- 800

740

700

695

675

665

655

640

630

620

655

630

620

610

620

610

605

595

585

550

540

530

505

500

490 

480

470

465

470 

455

18,575

599 

-160

Jan.

455 

455

450

440

430

430

440

*440

425

395

350

330

310

285

275

280

280

275

275

270

270

32~B" 260

390

440

465 

470

480

490

455 

440

11,775

380 

-186

Feb.

430 

420

410

395

390

380

365

360

340

310

285

280

275

275

275

280

285

290

*300

305

305

305

310

300

270

275 

290

350

_

9,055

323 

-176

Mar.

365

400

410

380

395

420

450

455

500

530

550

565

595

620

685

675

675

665

665

665

665

665

665

665

655

655 

650

*875

885

575 

820

18,740

605 

-186

Apr.

820 

780

770

760

760

750

910

1,040

1,190

1,330

1,340

1,380

1,550

1,780

1,880

2,080

2,380

2,810

3,250

4,190

6,690

9,700

11,000

12,700

15,000

11,800 

10,600

10, 100

10,700

11, 800

139,840

4,661 

+405

May

12, 500 

11,300

9,520

8,480

7,880

7,040

6,150

5,910

6,500

6,610

6,500

5,940

5,150

*4,520

3,890

3,990

4,170

3,680

5,060

2,820

2,560

2,580

2,190

2,080

2,220

2,060 

1.460

1,810

2,250

2,160 

2,070

148,650

4,795 

+314

June

1,780 

1,510

2,100

2,500

1,920

1,910

1,630

2,190

2,100

1,510

1,500

1,750

1,460

1,400

1,180

1,330

1,020

966

1,170"

1,340

2,040

1,920

1,630

1,530

1,270

1,100 

1,340

1,440

1,530

1,470

47,336

1,578 

+27

July

,490 

,670

,470

,190

,040

,250

,090

*890

840

*840

988

977

966

1,010

1,140

1,180

1,080

880

619 ST6-

810

1,020

1,180

1,190

1,200

1,020 

890

820

750

740 

1,120

51,976

1,051 

-262

Aug.

1,610 

1,490

,190

,120

,330

,420

,200

988

900

911

800

840

800

780

710

682

691

700

673

628

619

610

565

538

655

700 

664

504

520

512 

392

25,742

830 

-175

Sept.

452 

384

440

682

384

360

311

227

*220

202

196

178

155

150

150

150

311

311

304

304

172

304

538

870

988

860 

691

637

464

472

11,847

395 

-99

Adjusted for change in contents in Millinocket and Squapan Lake

Mean 

Cfsm 

In.

779 

0.472 

0.54

798 

0.485 

0.54

Calendar year 1956: 

Water year 1956-57:

439 

0.266 

0.31

194 

0.117 

0.13

147 

0.089 

0.09

419 

0.254 

0.29

5,066 

5.07 

3.42

5,109 

3.09 

3.56

Observed

Max 12,400 Mln 120 Mean 1,747 

Max 13,000 Mln 150 Mean 1,409

1,605 

0.972 

1.08

769 

0.465 

0.54

657 

0.398 

0.46

Adjusted

296 

0.179 

0.20

Mean 1,777 Cfsm 1.08 In. 14.92 

Mean 1,360 Cfsm 0.823 In. 11.16

Peak discharge (base, 15,000 efs). Apr. 24 (12 p.m.) 15,500 efs (7.72 ft)._______________

* Discharge measurement made on this day.

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

Mote. Stage-discharge relation affected by ice Nov. 14 to Apr. 19.
ST. JOHN RIVER BASIN 21

Meduxnekeag River near Houlton, Maine

Location.--Lat 46°06 I 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 1957. October, November 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. 17 years, 273 cfs.

Extremes. Maximum discharge during year, 1,900 cfs Apr. 22 (gage height, 5.58 ft); minimum, 6.8 efs Sept. 1-3.

1940-57: 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); minimum 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 1956-57, except period of ice effect (gage 

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

2.4

2.5 

2.7 

3.0

Oct. 1 to Apr. 22

3.5 

4.0 

5.0 

5.6

40O 

650 

1,360 

1,920

2.2

2.3

2.4

2.5

Apr. 23 to Sept. 30 

6.8 3.0 175

3.5 400

4.0 650

5.0 1,360

5.6 1,920

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

3O

31

Ttotal

Mean

Cfsm

In.

Oct.

51

77

89

92

86

73

70

113

126

109

92

77

70

64

62

62

59

55

51

55

51

50

51

245

560

300

248

212

220

152

135

3,555

115

0.657

0.76

Nov.

120

109

100

92

86

80

77

73

73

70

64

68

140

204

192

172

176

176

148

132

122

196

285

230

200

180

176

168

164

160

4,233

141

0.806

0.90

Dec.

160

156

152

148

144

*132

112

106

100 '102

102

77

75

77

73

66

64

64

64

64

64

64

64

64

64

64

62

S2

59

59

62

2,726

87.9

0.502

0.58

Jan.

59

62

62

62

59

59

57

*57

55

55

53

50

4B

46

42

41

39

37

36

34

33

44

77

112

132

138

T38

120

106

94

77

2,084

67.2

0.384

0.44

Feb.

68

62

53

46

42

39

39

39

41

44

48

46

39

37

36

36

34

*50

64

62

57

55

50

46

41

41

55

68

-

1,338

47.8

0.273

0.28

Mar.

73

70

68

66

64

62

59

57

62

77

100

102

100

112

140

164

160

156

156

160

160

156

160

164

168

180

205

220

*225

"235" 240

4,121

133

0.760

0.88

Apr.

240

270

295

290

305

335

390

425

415

405

400

405

435

450

470

515

575

650

840

1,070

1,510

1,860

1,600

1,380

1,160

910

764

722

704

812

20,602

687

3.93

4.38

May

875

740

635

565

510

460

420

395

385

380

470

435

370

*332

375

500

435

360

300

260

228

207

187

203

199

175

158

164

179

164

144

11,210

362

2.07

2.39

June

124

112

TSs" 131

112

104

121

150

131

109

90

80

73

68

66

59

53

44

40

42

40

38

38

36

52

34

51

64

61

68

2,299

76.6

0.438

0.49

July

66

57

50

42

40

50

51

*46

38

*38

50

53

42

36

30

26

25

23

21

16

16

17

24

38

48

42

36

31

26

36

85

1,199

38.7

0.221

0.25

Aug .

144

118

98

158

19_5

140

98

70

53

46

42

38

34

31

28

24

21

17

15

13

13

13

13

12

11

10

11

10

10

9.7

8.2

1,503.9

48.5

0.277

0.32

Sept.

7.5

6.8

T75

12

20

20

18

15

*13

12

11

11

11

12

12

12

15

23

25

22

20

20

31

53

48

38

32

28

23

21

599.8

20.0

0.114

0.13

Calendar year 1956: Max 2,630 Min 6.9 Mean 225 Cfsm 1.29 In. 17.52

Water year 1956-57: Max 1,860 Mln 6.8 Mean 152 Cfsm 0.869 In. 11.80

Peak discharge (base, 2,100 cfs). No peak above base.

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Nov. 19 to Apr. 18 (no gage-height record Jan. 8- 

21; discharge estimated on basis of 1 discharge measurement, weather records, and records for nearby 

stations).
22 ST. CROIX RIVER BASIN

St. Croix River at Vanceboro, Maine

Location. Lat 45 "34'10", long 67 "25'45", on right bank at internationel highway bridge in 

Vanceboro, Washington County, 400 ft downstream from outlet of Spedrlk Lake.

Drainage area. 417 sq mi.

Records available. October 1928 to September 1957.

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

JT929.

Average discharge. 29 years, 685 cfs.

Extremes. Maximum discharge during year, 1,350 cfs May 16 (gage height, 6.37 ft); minimum, 

43 cfs Aug. 21 (gage height, 2.63 ft).

1928-57: 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 for period of no gage-height record, which are 

goocl. Flow regulated by Chiputneticook Lakes (combined usable capacity, about 

13,200,000,000 cu ft).

Revisions. WSP 1431: Drainage area.

Rating table, water year 1956-57 (gage height, in feet, 

and discharge, in cubic feet per second)

3.2 109

3.5 157

4.0 257

4.5 385

5.0 

5.5 

6.0 

6.4

561

SOS

1,090

1,370

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Ototal

Mean

Cfsm

In.

Oct.

423 

429

439

426

433

422

422

426

426

423

419

416

413

410

407

407

407

407

404

397

397

765 

1,040

615

400

397

397

397

394

391

5_88

13,943

450

_

-

Nov.

388 

3S2

382

382

379

376

373

370

330

273

268

268

273

*271

271

271

273

273

273

273

273

278 

285

287

287

287

292

292

260

pco £00

9,158

305

-

-

Dec.

268 268"

268

268

268

268

268

268

268

266

268

465

502

475

456

456

456

500

4O4

404

404

395 

385

385

385

385

385

53 O

404

407

410

11,541

372

_

-

Jan.

407 

4O7

610

670

560

439

436

436

432

432

785

785

655

1,100

1,070

930

585

368

575

684

450

HI

710

690

520

359

359

520

67 9

18,266

589

-

-

Feb.

964 

845

465

550

735

890

882

866

854

843

832

816

80O

783

772

756

745

735

719

709

694

679 

670

660

641

636

636

627

20,810

743

_

-

Mar.

618 

613

6O4

595

587

574

565

557

561

574

582

574

578

578

275

140

143

145

147

148

148

150 

152

154

155

*360

499

499

499

499

499

12,772

412

-

-

Apr.

499

502

510

510

510

395

120

151

126

129

130

132

134

135

137

138

140

142

143

145

150

152 

154

157

159

162

164

166

166

168

6,396

213

-

-

May

170 

173

173

173

173

173

*175

175

177

179

179

179

490

*684

684

1,09O

1,520

1,300

980

541

541

541 

1,070

1,260

1,250

1,220

1,200

1,20O

1,180

1,230

1,210

21,090

680

-

-

June

1.120 

1,100

1,080

1,070

1,050

1.O4O

1,030

1,020

994

988

959

954

942

920

915

904

888

*882

871

871

860

849 

838

832

560

432 4"¥Z

446

449

452

25,758

859

-

-

July

460 

456

452

452

640

866

8?3

844

827

822

822

810

794

788

794

783

772

756

750

745

735

730 

719

709

565

368

365

365

36O

36U

160

20,118

649

-

-

Aug.

355 

355

355

350

350

345

345

340

340

550

656" 7OO

690

685

680

675

500

324

322

316

*255

339 

306

302

299

299

306

299

294

292

292

12,525

404

-

-

Sept.

287 2"82"

282

282

262

282

278

278

278

273

271

268

268

268

266

264

271

268

268

266

264

262 

262

262

257

259

262

253

246

246

8,055

269

-

"

Calendar year 1956 : Max 1,680 Min 1O4 Mean 532 Cfsm - In. -

Water year 1956-57 : Max 1,320 Min 120 Mean 494 Cfsm - In. -

* Discharge measurement made on this day.

Note. No gage-height record July 27 to Aug. 17; discharge estimated on basis of recorded range 

and- stage and record of gate operation at storage dam upstream.
ST. CROIX RIVER BASIN 23

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, and 0.8 mile downstream from outlet dam of Grand Lake.

Drainage area. 224 sq mi.

Records available. October 1928 to September 1957.

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

-^929.

Average discharge. 29 years, 349 cfs.

Extremes. Maximum discharge during year, 665 cfs July 6 (gage height, 3.25 ft); maximum

 gage height, 4.20 ft Jan. 24 (backwater from ice); minimum discharge, 37 cfs Nov. 18, 

Dec. 12 (gage height, 1.18 ft).

1928-57: Maximum discharge, 2,840 cfs June 12, 1952 (gage height, 6.35 ft); minimum daily, 5 cfs Dec. 3-6, 11, 1945.

Remarks. Records excellent except those for periods of ice effect or no gage-height recoHT which are good. Flow regulated by Grand and other lakes (combined usable capacity, 

about 8,250,000,000 cu ft).

Revisions.--WSP 971: Drainage area.

Rating table, water year 1956-57, except periods of ice effect (gage 

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

1.5

1.6

1.7 

1.9 141

2.2 

2.5 

3.0 

3.3

225

326

541

690

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

414

285

445

435

389

377

377

381

377

373

369

358

354

350

347

344

340

340

333

322

322

319

319

333

322

319

316

316

308

305

302

10,791

348

-

Nov.

298

294

291

288

284

278

274

271

271

268

255

251

265

248

242

238

242

230

245

238

235

248

188

136

154

134

136

139

136

136

6,893

230

_-

Dec.

136

134

136

139

136

134

136

141

141

146

136

160

204

201

201

201

164

166

201

201

198

198

198

198

b!98

b!98

b!96

195

195

b220

b220

5,428

175

_

-

Jan.

b220 b2"2"5

b220

b220

219

b210

210

213

210

b215

b215

216

219

b220

b220

b220

b215

b215

213

210

201

195

b210

a210

a210

a210

a205

a205

a205

a205

a200

6,576

212

_

-

Feb.

a200

a200

a!98

a!98

a!96

a!96

195

195

195

198

195

280

344

380

437

460

503

488

474

465

455

437

428

414

410

406

401

397

-

9,345

334

_

-

Mar.

389

389

385

369

373

358

350

347

365

377

373

365

365

290

128

93

91

88

88

88

178

397

553

385

330

149

149

114

93

93

93

8,045

260

..

-

Apr.

93

96

99

97

97

107

107

107

108

108

108

110

112

112

112

112

112

114

114

116

118

Tie

116

116

116

112

101

96

91

91

3,214

107

-

-

May

89

88

86

86

88

88

*89

89

89

91

91

91

*91

89

89

83

78

79

80

89

94

93

93

93

91

89

91

94

93

91

91

2,756

88.9

-

June

91

91

91

91

91

89

W

89

89

116

141

146

146

149

149

149

149

154

157

159

157

157

157

225

381

377

389" 389

385

585

5,428

181

-

-

July

385

381

377

377

440

660

655

640

625

620

615

605

595

585

585

580

570

570

566

561

546

541

536

531

522

517

512

498

488

488

400

16,571

535

-

-

Aug.

29T" 291

291

288

291

291

288

284

281

281

281

281

281

274

271

271

271

265

265

261

261

258

255

251

251

251

258

251

248

OAQ £*O

245

8,375

' 270

_

-

Sept.

242

238

238

242

238

238

235

238

235

232

228

228

225

225

225

222

222

219

335

605

590

575

561

546

522

517

503

470

451

432

10,282

343

-

-

Calendar year 1956: Max 1,340 Mln 65 Mean 284 Cfsm - In. -

Water year 1956-57 : Max 660 Min 78 Mean 257 Cfsm - In. -

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of records of gate operation In storage dam

mile upstream.

b Stage-discharge relation affected by ice.
S4 . CROIX RIVER BASIN

St. Croix River near Baileyvllle, Maine

Location. La t 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 CD. at Grand Falls 

and 8 miles upstream from village of Woodland.

Drainage area. --1,320 sq mi.

Records available. November 1919 to September 1957.

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

Average discharge . 38 years, 2,189 cfs.

Extremes. --Maximum discharge during year, 3,120 cfs May 20 (gage height, 3.19 ft); minimum daily, 385 cfs Sept. 2, 29.

1919-57: 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 clo3ed down.

Remarks . Records excellent except those for periods of shifting control, which are good. 

Flow regulated by Chiputneticook Lakes, Grand and other lakes (combined usable capacity, 

about 25,000,000,000 cu ft).

Revisions (water years) . WSP 1231: 1922.

Rating table, water year 1956-57, except periods of shifting control (gage 

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

.9

1.2

350

470

590

800

1.5 

2.0 

3.0 

4.0

1,040

1,570

2,850

4,340

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1

2

3 

4

5

6

7

8

9

10

11

1Z

13

14 

15

16

17

18

19

ZO

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

1,350

1,220

1,250 

1,260

1,170

1,170

1,220

1,200

*1,190

1,210

1,190

1,210

1,170

695 

1,230

1,250

1,Z30

1,170

1,210

1,130

1,130

1,120

1,130

1,120

1,150

1,230

1,190

640

1,450

1,260

1,330

36,455

1,176

-

-

Nov.

1,320

1,310

1,260 

1,240

1,320

1,350

1,280

1,300

1.O8O

1,080

525

755

780

*810 

815

815

745

815

810

825

840

840

840

840

580

840

865

865

865

865

28,495

950

.

-

Dec.

880

870

880 

890

890

890

*905

920

64O

840

895

1,030

1,350

1,760 

1,750

1,860

2.000

1,810

1,690

1,270

1,070

1,080

1,120

950

450

990

1,080

1,070

1,130

1,040

1 

'

450

35,430

1,143

-

-

Jan.

1,740

1,750

1,690 

1,880

1,920

1,010

1,680

2,000

1,810

1,890

2,050

1,8OO

2,140

1,860 

2,090

*1,690

2,050

2,090

1,970

950

1,700

2,060

1,960

2,320

2,330

2,230

2,320

2,450

2,450

2,150

2 ,380

60,390

1,948

.

-

Feb.

2,150

2,060

1,070 

1,950

2,100

2,120

2,240

2,010

2,400

2,070

2,480

*2 J 090

2,100

2,200 

2,O6O

2,020

1,240

1,770

2,100

2,180

1,910

1,670

1,690

1,710

1,670

1,710

1,690

1,680

54,140

1,954

_

-

Mar.

1,630

1,670

1,020 

1,500

1,700

1,730

1,790

1,740

1,800

1,980

1,980

2,290

2,200

2.450 

2,250

2,560

995

2, 100

2,130

2,290

2,320

2,310

2,520

2,200

2,310

*2,270

2,230

2,290

2,150

2,150

1,280

61,415

1,981

_

-

Apr.

1,740

2,230

2,460 

2,530

2,590

2,420

2,290

2,490

2,530

2,550

2,590

2,400

2,580

1,210 

2,280

2,410

Z,400

2,380

2,410

2,400

1,640

2,200

2,400

2,440

2,480

2,530

2,440

2,480

2,400

Z,460

70,360

Z,345

-

-

May

2,580

2,490

2,570 

2,570

1.570

2,390

2,480

2,590

2,520

2,620

2,540

2,500

2,840

2,610 

2,640

2,680

2,710

2,630

1,790

2,680

2,720

2,850

2,720

g,890

27810

2,720

2,790

2,740

2,710

2,740

2,840

80,530

2,598

-

-

June

2.790

1,980

2,520 

2,420

2,500

2,220

2,570

2,410

1,300

2,220

2,360

2,160

2,260

2,370 

2,350

2,160

2,090

*1,960

1,800

1,850

1,890

1,920

2,060

1,870

1,650

1,330

1,270

1,080

1,090

880

59,330

1,978

-

-

July

1,100

1,140

1,140 

550

480

490

495

850

990

895

960

960

960

565

1,180

1,760

],6SO

1,510

1,020

905

640

1,410

910

920

935

905

870

1,040

1,080

945

895

2?, 930

965

-

"

Aug.

1,070

985

855 

795

1,020

950

920

935

970

950

815

1,630

1,910

1,980 

1,930

1,800

880

450

905

*910

950

970

950

750

415

810

975

975

960

950

585

51,950

1,051

-

-

Sept.

4OO

385

¥00 

765

785

795

780

590

550

910

1,320

880

855

855 

620

665

1,260

1,410

1,420

1,440

1,370

785

1,140

1,420

1,350

1,380

1,410

905

385

760

27,990

935

-

-

Calendar year 1956: Max 7,47O Min 4O5 Mean 1.9O1 Cfsm - IT. -

Water year 1956-57: Max 2,890 Min 385 Mean 1,579 Cfsm - Ir.

* Discharge measurement made on this day.

Note.--Shifting-control method used Oct. 1 to Jan. Z3, June 3 to Sept. 3D.
DEMNYS RIVER BASIN 25

Dennys River at Dennysville , Maine

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

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 1957.

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

1929.

Extremes . --Maximum discharge during year, 806 cfs Apr. 7 (gage height, 3.94 ft); minimum, 

8.6 cfs Sept. 30 (gage height, 0.29 ft).

1955-57: Maximum discharge, 1,460 cfs Apr. 16, 1956 (gage height, 5.45 ft); minimum, 

that of Sept. 30, 1957.

Remarks. Records excellent except those for periods of ice effect or fragmentary gageheight record, which are fair. Flow partly regulated by power development at Meddybemps Lake.

Rating table, water year 1956-57, except periods of ice effect (gage 

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

0.3

.4

.7

1.0

1.5 140

2.0 

2.5 

3.0 

4.0

230

345

490

830

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

82

112

80

48

53

30

79

196

*168~

120

92

66

41

33

30

27

26

23

22

20

19

I?

23

114

143

108

108

94

86

43

74

2,179

70.3

_

-

Nov.

80

64

57

42

50

80

45

23

22

22

22

22

*25

32

37

32

30

34

32

55

44

210

288

184

156

144

248

298

5B¥

£23

2,862

95.4

_

-

Dec.

205

176

130

60

42.

65

102

138

118

86

98

318

391

298

204

210

230

180

130

140

156

154

150

144

144

142

140

140

150

245

200

5,086

164

_

-

Jan.

180

160

152

142

136

130

128

102

45

32.

42

136

120

80

*130

132

132

132

132

132

124

65

190

403

290

230

194

170

156

140

4,848

156

_

-

Feb.

126

110

98

92

86

82

78

74

68

65

58

*134

149

138

74

58

52

30

51

45

27

26

25

35

26

40

132

254

-

2,233

79.8

_

-

Mar.

248

202

194

167

156

150

136

92

200

544

368

310

278

238

190

164

167

174

174

194

212

150

137

155

156

238

*208

216

210

214

167

6,409

207

_,

-

Apr.

120

355

614

427

298

545

736 550"

409

310

305

318

358

332

£90

290

318

330

345

379

451

475

406

365

325

£82

248

268

£75

£92

11,016

367

,.

-

May

308 ITSISO

1£0

107

92

*86

78

76

76

96

94

80

68

104

£12

156

113

83

70

88

78

63

58

52

43

43

57

76

60

48

2,987

96.4

 .

-

June

41

38

36

43

80

113

134

74

106

63

128" 136

55

48

58

65

40

*46

116

41

25

£2

22

£0

18.

19

22

22

22

31

1,684

56.1

_

-

July

3£

26

21

18

18

19

20

18

£0

30

40

35

£6

£2

30

100

74

27

£8

23

18

16

2T

36

26

£2

£2

26

19

£3

33

892

£8.8

_

.

Aug.

£7

£5

£5

81

50

27

20

16

15

18

11£

90

58

37

£7

24

£1

18

16 *:.e

14

13

11

TT11

1£

f.-.4

f.-.£

12

£2

19

874

28.2

_

-

Sept.

14

12

13

13

f!2

fll

11

1£

1£

fl£

12

12

13

f!3

1£

fll

11

fll

f9.8

9.8

flO

f!4

f!3

11

11

f9.8

f9.a

9.8

9.0

f 8. 6

34E.6

11.4

_

-

Calendar year 1956 : Max 1,330 Min 9.4 Mean 172 Cfsm 1.86 In. 25.34

Water water year year 1956-57 xaso-o ( : : Max max 736 100 Min nin 8.6 a.fa Mean nean 113 ±±o Cfsm oism 1.22 L.ce. In. J.n. 16.66 Ifa.bfa

Peak discharge (base, 600 cfs). Apr. 5 (l a.m.) 684 cfs (5.61 ft); Apr. 7 (£ a.m.) 806 off (5.94 ft)

* Discharge measurement made on this day.

f Fragmentary gage-height recordj discharge computed from partly estimated gage heights.

Note. Stage-discharge relation affected by ice Dec. 1, Z, 6, Dec. 16 to Jan. 23, Jan. £7 toPeb.J.0.

50569Z O - 59 - 3
26 MACHIAS RIVER BASIN

Machias River at Whitneyville, Maine

Location. Lat 44°43'25", long 67°31'15", on right bank 800 ft downstream from highway 

bridge at Whitneyville, Washington County.

Drainage area. 457 sq mi.

Records available. October 1905 to September 1921, September 1929 to September 1957. 

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

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

~jT929. Oct. 1, 1905, to Sept. 30, 1921, staff and chain gages on highway bridge at 

different datum.

Average discharge. 44 years (1905-21, 1929-57), 936 cfs.

Extremes. Maximum discharge during year, 2,680 cfs Apr. 7 (gage height, 6.37 ft); maxi- 

 mum gage height, 6.64 ft Dec. 31 (backwater from ice); minimum discharge, 34 cfs

° 1905-21, 1929-57: Maximum discharge, 11,800 cfs Nov. 28, 1950 (gag>3 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 cofferdam during reconstruction of 

highway bridge upstream.

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

storage in lakes above station.

Revisions (water years). WSP 241: 1903-4. WSP 971: Drainage area. WSP 1231: 1907- 

15, 1916-21 (MlRating table, water year 1956-57, except periods of Ice effect (gage 

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

2.6 39 4.0 52O

2.8 65 4.5 950

5.0 97 5.0 1,45O

5.3 175 6.0 2,380

3.6 295 6.3 2,620

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

157

264

595

440

282

264

545

687

813

6l4

477

315

277

272

264

175

118

192

242

226

192

Bo- 75

584 

785

679

485

458

567

458

310

11,488

571

0.812

0.94

Nov.

572

489

501

464

417

384

345

320

51O

286

254

238

234

238

238

242

265

25O

25O

250

25O

44O

1,640 

1^300 

986

1,130

1,320

1,320

1,120

645

16,498

550

1.20

1.34

Dec.

598

555

483

452

412

356

384

483

541

501

435

74O

1,530

1,470

1,130

870

959

813

715

606

495

446

372 

345 

295

290

2 SO

270

285

520

1.750

19,561

625

1.57

1.58

Jan.

1,080

880

670

525

405

345

295

260

250

240

235

225

225

225

*225

225

220

215

210

21O

205

196

870 

2.180 

1,740

1,250

880

679

548

489

446

16,648

537

1.18

1.36

Feb.

406

384

350

350

350

345

35O

505

50O

510

54O

53 O

286

25O

242

230

238

238

225

215

210

214 

215 

214

254

46O

755

8,564

306

0.670

0.70

Mar.

670

520

452

39O

345

315

305

310

52O

1,240

lj9gO

3/41O

1*090

995

1,O2O

955

9S6

1,000

890

776

687

662

740 

822 

785

696

670

63O

583

554

508

25,426

756

1.65

1.90

Apr.

477

6l¥

1,900

1,610

1,080

1,490

2.560

2,150

1,650

1,220

1,O8O

1,O80

1,140

1,130

986

850

841

920

995

1,O90

1,280

1,550

1,530 

1,370 

1,26O

1,120

995

95O

1,260

1,920

38,098

1,270

2.78

3.10

May

2,300

2,510,

2,265

2,150

2,150

*2,16O

2,110

2,290

2,510

2.19O

2,090

2,O60

*2,O50

1,850

1,790

2,260

1,820

1,550

495

255

757

950

804 

722 

646

576

541

598

687

654

548

45,833

1,478

3.23

3.72

June

470

446

423

417

406

356 35O

550

545

259

264

268

29O

406

508

569

*5O1

590

548

389

315

355

340 

350 

345

372

372

367

362

394

11,707

390

0.853

O.95

Jul"

394

356

310

282

286

286

286

259

250

286

345

£41

?B7

286

217

254:

250

2*6

222

210

210

189

163 

163 

178

178

178

175

157

142

1SS

7,P9O

255

0 .£"58

0.64

Aug.

169

230

277

282

286

282

277

268

238

226

226

226

218

186

148

132

130

130

130

99

84

82

95 

97

97

120

132

128

111

97

5,292

171

O.374

0.43

Sept.

97

95

93

93

86

78

54

41

5(J

84

TOZ" 106

62

43

49

72

80

80

78

78

70

68

68 

66 

66

76

55

47

48

43

2,128

70.9

0.155

0.17

Calendar year 1956 : Max 4.94O Mln 3O Mean 727 Cfsra 1.59 In. 21.66

Water year 1956-57 : Max 2,560 Mln 41 Mean 567 Cfsra 1.24 In. 16.85

Peak discharge (base, 5,200 cfs). No peak above base.

* Discharge measurement made on this day.

Note_. Stage-discharge relation affected by ice Dec. 25 to Jan. 22, Feb. 19-21, 24, Feb. 27 to 

Mar. 1, Mar. 4-6, 9-11.
MACHIAS RIVER BASIN 27

East Machias River near East Machias, Maine

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

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

Drainage area. 251 sq mi.

Records available. October 1926 to September 1957.

Qage. Staff gage read once daily. Datum of gage is 34.9 ft above mean sea Iev3l, datum 

of 1929. Prior to October 1950, at datum 1.00 ft higher.

Average discharge. 30 years (1927-57), 505 cfs.

Extremes. Maximum . discharge observed during year, 1^100 cfs Apr. 10 (gage heig'it, 5.18ft);

minimum observed, 32 cfs Sept. 29, 30 (gage height, 1.17 ft).

1926-57: Maximum discharge, 3,660 cfs Dec. 15, 1950 (gage height, 9. 

mum, 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 1956-57 (gage height, In feet, and discharge,

in cubic feet per second) 

(Backwater fron aquatic growth Oct. 16 to Nov. 25, June 11 to July 4)

05 ft); mini1.1 

1.3 

1.5 

1.7 

2.0

58

81

124

2.5 

3.0 

4.0 

5.0 

5.2

208

310

595

1,010

1,110

Discharge, In cubic feet per second, water year October 1956 to September 19E7

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.

75

SO

85

91

97

100

108

*142

152

162

172

176

180

TfZ

166

156

152

146

138

132

134

138

136

13O

132

138

146

142

140 

13S

134

4,190

135

0.538

0.62

Nov.

130

128

124

12O

114

1O8

1OO

96

93

89

91

96

*93

89

88

86

86

89

93

96

100

150

188

240

26O

290

320

345

370 

575

4,647

155

0.618

0.69

Dec.

382

364

347

333

319

310

298

*287

283 2~85

287

340

392

420

455

485

494

504

511

482

453

436

412

387

374

362

350

335

322 

591

566

12,166

392

1.56

1.80

Jan.

T73- 514

436

404

382

370

357

343

324

310

296

283

274

265

257

247

237

228

221

215

241

261

301

352

417

479

498

482

464 

45O

A?P 4£O

10,809

349

1.39

1.60

Feb.

407 384"

370

355

338

324

315

3O5

296

285

28O

269

259

249

237

226

221

213

206

199

194

183

175

185

197

208

226

236

-

7,342

262

1.04

1.08

Mar.

228

222

235

287

276

265

255

245

292

357

433

517

559

570

581

588

599

61O

625 '610

595

573

559

566

573

563

552

545

531

517

485

14,433

466

1.86

2.14

Apr.

467

382 655-

733

818

883

1,000

1,030

1,080

i.iqq

1.O7O

1.04O

1,020

986

954

918

896

865

857

848

861

878

892

892

887

883

861

835

814

793

26,198

873

3.48

3.88

May

773

759

761

749

761

*678

636

595

559

538

521

521

504

491

476

498

524

538

552

552

559

534

515

470

445

475

435

425

415

4O5

395

17.O69

551

2.20

2.54

June

3 SO

355

335

315

295

285

27O

255

245

230

215

2O5

198

188

182

176

170

*166

16O

156

150

146

138

128

116

116

110

108

TO

120

6,027

201

0.801

O.89

July

120

118

114

114

114

110

108

108

110

114

124

124

-ill TS5

126

126

126

120

108

HO

110

108

104

102

98

96

93

93

89

88

3,419

no

0.438

0.50

kva,.

86

84

81

86

89

86

82

79

77

76

88

89

90

93

93

91

93

88

*85

81

76

73

69

65

62

65

67

65

62

59

56

2,436

75.7

0.3O2

C.35

Sept.

56

54

53

51

51

49

50

52

54

52

48

46

44

46

45

44

43

41

41

43

42

40

40

41

40

38

36

54

3232"

1,338

44.6

0.178

O.20

Calendar year 1956 : Max 2,170 Mln 38 Mean 440 Cfsm 1.75 In. 23.85

Water year 1956-57 : Max l.JOO Mln 32 Mean 301 Cfsm 1.20 In. 16.29

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

Narraguagus River at Cherryfield, Maine

Location.--Lat 44"36"30", long 67°56'15", on left bank at Cherryfield, Washington County,

 §00 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 1957.

Sage. 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. 9 years, 479 cfs.

Extremes. Maximum discharge during year, 2,030 cfs Mar. 10 (gage height, 11.75 ft): maxi-

 mum gage height. 12.12 ft Jan. 23 (ice Jam); minimum discharge, 28 cfs Sept. 30 (gage

6 1948-57: Maximum discharge, 7,250 cfs Nov. 28, 1950 (gage height, 15.81 ft); minimum, 

that of Sept. 30, 1957.

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

Revisions (water years). WSP 1301: 1948(M).

Rating babies, water year 1956-57, except periods of ice effect Igage 

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

Oct. 1 to Jan. 23

7.7

7.8 

8.0 

8.5

96

111

149

270

9.0

9.5

10.0

11.0

425

620

850

1,460

7.0 

7.2

Jan. 24 bo Sept. 30

28 7.4 58

40 7.7 96

Note. Same as preceding 

table above 7.7 ft.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

351

290

206

172

151

215

566

503

389

299

239

202

179

162

147

133

127

118

108

104

102

136

540

491

373

308

259

226

199

183

7,594

245

1.06

1.22

Nov.

170

157

149

141

131

125

115

113

111

111

105

TIT

147

190

190

183

174

172

172

160

172

755

1,060

850

620

476

578

574

476

415

8,903

297

1.28

1.43

Dec.

363

329

285

250

235

220

267

354

357

332

317

800

1,040

892

722

749

778

637

454

425

380

350

325

300

285

270

255

240

270

540

665

13,686

441

1.90

2.19

Jan.

510

425

360

305

270

235

210

188

170

156

140

138

132

130

*128

126

120

116

112

112

110

158

1,550

1,320

1,070

782

780

635

570

500

445

11,983

387

1.67

1.92

Feb.

390

360

320

275

265

235

220

205

205

215

240

215

188

172

164

157

156

160

156

150

146

142

T47

146

147

219

629

654

_

6,678

238

1.03

1.07

Mar.

425

338

299

255

215

200

210

219

1,090

1,850

1,240

913

763

821

745

681

801

694

566

511

461

465

495

488

447

425

412

389

363

338

320

17,419

562

2.42

2.79

Apr.

302

515

1,130

902

672

1,150

1,520

1,170

929

749

773

782

754

704

620

546

522

530

538

574

642

713

717

672

620

574

538

511

491

530

21,390

713

3.07

3.42

May

554

534

495

457

422

*392

363

344

329

329

344

360

348

329

402

763

722

595

484

425

620

591

484

429

376

329

311

341

382

332

287

13,473

435

1.87

2.16

June

253

234

232

219

214

194

190

190

172

157

145

131

133

127

127

125

110

99

95

88

83

78

74

72

69

81

88

83

85

98

4,046

135

0.582

0.65

July

92

88

83

77

73

81

79

79

77

90

120

ITS

108

96

85

81

83

82

73

67

58

59

68

77

70

65

58

56

55

58

61

2,417

78.0

0.336

0.39

Aug.

59

58

55

55

54

50

48

45

42

42

48

54

55

46

43

45

46

42

*40

39

37

35

34

32

3Y

36

46

42

37

34

32

1,363

44.0

0.190

0.22

Sept.

32

30

32

34

43

40

34

36

39

38

36

42

40

40

39

37

37

37

35

33

32

33

34

35

34

33

32

30

29

28

1,054

35.1

0.151

0.17

Calendar year 1956 : Max 3,090 Kin 45 Mean 391 Cfsm 1.69 In. 22.96

Waber year 1956-57 : Max 1,830 Kin 28 Mean 301 Cfsm 1.30 In. 17.63

Peak discharge (base, 1,500 cfs).--Jan. 23 (time unknown) about 2,000 cfs; Mar. 10 (4 a. 

2,050 cfs (11.75 ft); Apr. 7 (2 a.m.) 1,620 cfs (11.25 ft)._____________________

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Dec. 3-6, Dec. 20 to Jan. 24, Jan. 27 to Feb. 13, 

Feb. 17-23, 24, Mar. 4-7.
UNION RIVER BASIN 29

West Branch Union River at Amherst, Maine

Location. La t 44°50 I 25", long 68°22 1 20", on right bank 200 ft upstream from site of old 

 tannery dam, 0.6 mile upstream from Indian Camp Brook, and 0.7 mile northwest of 

Amherst, Hancock County.

Drainage area. 148 sq mi.

Records available.--July 1909 to September 1919, July 1929 to September 1957. 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. 38 years, 258 cfs.

Extremes. Maximum discharge during year, 718 cfs Apr. 7 (gage height, 5.39 ft); minimum, 

7.4 cfs Sept. 30.

1909-19, 1929-57: Maximum discharge, 4,140 cfs Apr. 13, 1940 (gage height, 9.58ft); 

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 periods of ice effect or no gage-height record, which are fair.

Revisions (water years). WSP 801: 1935. WSP 821: Drainage area. WSP 1231: 1912-15. 

1916-191M).WSP 1301: 1910-11.

Rating tables, water year 1956-57, except perTmls ~bf Ice effect (gage 

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

3.3

3.4 

3.6

Oct. 1 to Mar. 13

26 4.0

37 4.5

66 5.0

Mar. 14 to Sept. 3O

155

305

515

2.9

3.0

3.1

5.9 

9.O

13

3.2

3.3

Hote. Same as preceding 

table above 3.3 ft.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

TWal

Mean

Cfsm

In.

Oct.

47

6l

61

63

66

63

97

150

134

132

124

107

92

86

79

71

68

63

58

52

50

47

52

110

122

127

129

122

107

99

88

2,727

88.0

0.595

O.69

Nov.

84

80

73

68

66

61

56

53

52

52

49

55

92

112

127

134

134

132

132

112

112

312

397

397

360

323

302

279

250

232

4,683

156

1.05

1.17

Dec.

211

200

194

182

170

168

166

163

163

174

210

300

431

436

393

375

36O

335

320

270

235

210

19O

174

160

150

142

132

124

116

106 

6 .,960

225

1.52

1.75

Jan.

100

94

90

84

80

77

71

68

66

64

63

61

60

*58

55

5O

47

46

42

38

36

37

182

255

2T5

230

205

182

162

146

134

3,128

1O1

0.682

O.79

Feb.

122

112

99

88

80

75

70

64

61

58

*53

53

52

50

49

47

46

45

44

42

41

40

40

38

57

41

66

1OO

_

1,713

61.2

O.414

0.43

Mar.

80

73

66

60

53

SO

49

47

106

425

415

380

350

345

376

418

477

144

405

364

327

3O9

316

323

316

305

302

288

272

250

238

8,229

265

1.79

2.O6

Apr.

223

319

515

505

454

574

712

690

663

609

564

525

559

530

486

436

422

431

454

472

525

569

574

574

554

520

496

458

*431

472

15,316

511

3.45

3.85

May

477

477

454

409

372

345

316

295

272

269

285

292

295

275

327

440

436

414

364

340

376

341

312

292

280

232

214

217

211

220

21O

10,059

324

2.19

2.52

June

190

T78

174

162

148

136

128

126

120

110

103

90

86

82

82

73

*66

63

60

56

52

47

45

42

40

42

46

49

58

66

2,720

90.7

0.613

0.68

July

64

66

63

55

56

55

49

45

44

56

58

50

50

55

68

71

80

73

64

55

47

47

45

41

38

36

35

32

33

37

 Z/* GO

1,604

51.7

0.349

0.40

Aug.

37

37

37

37

37

36

35

23

2.3

25

27

3>

23

25

24

ZZ

21

18

17

15

17

14

13

12

12

13

14

12

11

9.4

9.0

693.4

22.4

0.151

0.17

Sept.

9.0

8.6

9.0

9.4

9.4

9.0

9.0

9.O

9.0

8.6

9.O

9.4

9.0

12

11

10

11

10

9.4

*9.0

9.0

9.0

1O

12

11

9.4

9.0

8.6

8.6

7.7

284.1

9.47

O.064

0.07

Calendar year 1956: Max 1,440 Mln 11 Mean 208 Cfsm 1.41 In. 19.16

Water year 1956-57: Max 712 Mln 7.7 Mean 159 Cfsm 1.07 In. 14.58

Peak discharge (base, 1,000 cfs). No peak above base.

* Discharge measurement made on this day 

Note. Stage-discharge - relation affected 

height record Jan. 24-28). No gage-height i-cuui-u maj c 

on basis of weather records and flow of nearby streams.

affected by Ice Dec. 2-7, 10-12, Dec. J.t> to roar. J.o \no gage- 

' ' ' record May 20, 25, May 30 to June 9; discharge estimated

16 to Mar. 13 (no gage-
30 PENOBSCOT RIVER BASIN

East Branch Penobscot River at Grindstone, Maine.

Location. Lat 45°43'50", long 68°35'20", on left bank 500 ft downstream from Bangor & 

Aroostook Railroad bridge, half a mile south of Grindstone, Penobscot County, and 

9j 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 1957. Monthly discharge only for some 

periods, published in WSP 1301.

Gage. Water-stage recorder. Datum of gage is 294.74 ft above mean sea level, datum of 

1929. Prior to June 30, 1929, chain gage on railroad bridge at same datum.

Average discharge. 55 years, 1,864 cfs (unadjusted).

Extremes.--Maximum discharge during year, 7,470 cfs Apr. 22 (gage height, 8.58 ft); mini- 

 mum, 256 cfs Sept. 16 (gage height, 4.25 ft).

1902-57: Maximum discharge, 37,000 cfs Apr. 30, 1923 (gage height, 16.9 ft, site 

then in use, present datum); minimum daily (1914-57), 77 cfs Nov. 19, 1924.

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

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 1956-57, except period of Ice effect (gage 

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

4.2 

4.4 

4.9 

5.5

235

325

650

1,260

6.O 

7.0 

8.0 

8.5

1,970 

3,800 

6,02O 

7,260

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

890 

1,15O

1,150

1,060

990

89O

88O

1,220

1,150

990

910

840

821

812

803

794 

785

794

767

749

722

722 

776 

1,820

2.O3O

1,570

1,310

1,200

1,120

1,060

1,O20

51,755

1,024

-284

Nov.

1,030 

1.O2O

960

940

920

880

860

850

83O

803

758 776"

9OO

950

920

90O 

940

1,020

920

88O

910

2,38O 

5,09O 

2,310

1,500

1,320

1,310

1,340

1,260

1,080

34,557

1,152

-209

Dec.

1,010 

930

85O

860

870

89O

910

900

880

850

840

85O

860

850

83O

840 

85O

860

87O

850

81O

785 

740 

72O

730

74O

720

695

685

675

670

25,420

820

-120

Jan.

650

640

635

625

890

1,120

,110

,10O

,O8O

,O70

,06O

,050

1,040

1,030

1,03O

1,030 

1,O2O

1,010

1,OOO

990

980

97O 

1.210 

1,140

1,110

1,060

1,020

990

95O

93O

910

30,450

982

-567

Feb.

91O 

9OO

91O

920

930

94O

96O

980

1,OOO

990

980

970

96O

980

1,O2O

1.030 

1,O2O

1,010

1,000

980

990

1,OOO 

11,010 

1,OOO

990

98O

1,OOO

1,010

-

27,370

978

-635

Mar.

1,010 

1,020

980

940

950

930

930

950

980

1,070

1,420

1,670

1,700

1,670

1,5OO

1,540 

1,220

1,160

1,120

1.O80

1,030

99O 

980

1,010

*1,070

1,060

1,050

1,040

1,030

1,020

1,010

34,890

1,125

-265

Apr.

1.020

1,120

1,160

1,150

1,160

1,260

1,390

1,45O

1,430

1,420

1,420

1,420

1,49O

1,56O

1,450

1,490 

1.72O

2,180

2,680

3,280

4,660

7,050 

57790 

5,490

5,150

4,920

4,590

4,420

4,350

4,290

81,960

2,732

+1,095

May

4,400 

4,900

5.150

4,92O

4,550

5,240

2,620

2,480

2,620

2,68O

5,240

3,14O

2,430

2,030

2,110

*2,590 

2,44O

2,070

1.85O

1,850

1,8OO

1,660 

1,56O 

1,560

1,490

1,470

1,400

1,420

1,470

1,600

1,300

78,020

2,517

+717

June

1,260 

1,240

1.450

1,420

1,320

1,260

1,250

1,36O

1,200

1,080

1,010

980

930

870

900

880 

83O

776

776

870

830

83O 

803

76"7

87O

920

900

85O

l.OOO

30,199

1,007

-89

Jvly

960 

88O

803

618

61O

668

626

57O

556

610

*570

507

48O

454

429

442 

442

587

587

581

565

4IT 

514 

528

514

494

461

435

442

740

1,270

17,554

566

-83

Aug.

1,010 

805

722

1,200

1,550

1,060

830

713

642

6O2

586

570

542

507

500

480 

448

429

417

405

381

375 

365 

355

345

345

365

355

330

325

586

18,123

585

-94

Sept.

722 

212

330

365

35O

320

311

311

302

287

*287

292

287

278

274

274 

311

316

287

278

269 278" 

487 

686

528

417

370

330

306

283

10,578

355

-185

Adjusted for change In reservoir contents

Mean 

Cfsm 

In.

740 

0.692 

0.80

94. 

O.Q8 

0.9f

Calendar year 1956: 

Water year 1956-57:

5 7OO 

L 0.654 

J 0.75

415 

0.388 

0.45

345 

0.521 

0.55

860 

0.804 

0.93

5,827 

3.58 

3.99

3,234 

3.02 

3.48

Observed

Sax 7,570 Min 278 Mean 1,404 

Max 7,O50 Mln 269 Mean 1,153

918 

0.858 

0.96

485 

0.451 

0.52

491 

0.459 

0.53

168 

0.157 

0.18

Adjusted

Mean 1,478 Cfsn 1.58 In. 18.82 

Mean 1,095 Cfsr 1.02 In. 15.90

* Discharge measurement made on this day.

t Change In contents, equivalent In cubic feet per second, In Chamberlain, Telos, Second and 

Grand Lakes, and Round Pond.

Hote. Stage-discharge relation affected by lee Nov. 25 to Apr. 10.
PENOBSCOT RIVER BASIN 31

Penobscot River near Mattawamkeag, Maine

Location. Lat 45°34'00". long 68°24'10", on left bank 1,800 ft downstream from Mattaseunk 

Dam and powerhouse, 1-J miles upstream from Mattaseunk Brook, and 4^ miles upstream 

from Mattawamkeag, Penobscot County.

Drainage area. 3,310 sq mi, approximately (including about 240 sq mi drained by Chamberlain Lake through Telos Canal).

Records available.--June 1940 to September 1957.

Gage. Water-stage recorder. Datum of gage is 191.72 ft above mean sea level, <?atum of 

"1929.

Average discharge. 17 years, 5,446 cfs (unadjusted).

Extremes. Maximum discharge during year, 11,600 cfs Apr. 22 (gage height, 6.43 ft); minimum daily, 1,800 cfs Sept. 1.

1940-57: Maximum discharge, 40,200 cfs May 21, 1945 (gage height, 11.09 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 R 41).

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4 

5

6

7

B

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.

4,300

4.04O

4,170

4,080 

3,830

3,910

4,040

4,000

4,340 

4.O80

4,OOO 

3,830

3,790

3,910

3,870

3,830

3,790

3,750

3,750 

3,910

4.OOO

3,790

3,91O 

5.150 

5,040

4,480 

4,08O

4,080

3,750

3,790 

3,640

124,910

4,029

-1,40O

Nov.

3,600

3,6OO

3,420

3,600 

3,250

3,6OO

3,490

3,250

3,45O 

3,140

m3,250

3,38O

3,25O

3,380

3,450

3,560

3.79O 

3.68O

3,6OO

5,230

6.950 

5,940 

4,380

4,61O 

4,660

4,520

4,940

4,340

117,730

3,924

-1,258

Dec.

4,250

4,300

3,960

*4,300 

3,790

3,6OO

3,830

3,790

3,870 

3.68O

3,79O 

4.580

3,910

5,49O

5,530

4,210

3,96O

5,910

5,68O 

5,420

3,870

3,45O

3,420 

2,890 

2^720

5,490 

5,510

5,600

5.6OO

3,42O 

3,640

115, O6O

3,712

-1,590

Jan.

3,6OO

5,750

5,58O

5,790 

4,500

5,850

5,750

5,560

5,91O 

3,640

3,850 

3,870

5.75O

5,87O

5,55O

3,870

5,720

3,75O

3,530 

3,790

4,OOO

5,600

4.990 

4,89O 

5,910

4,OOO 

3.550

4,O8O

3,91O

5, 680 

5,960

119,590

3,851

-2,747

Feb.

3,750

3,79O

5,790

4,080 

4.O8O

3,64O

3,960

3,680

4.17O 

3,910

3.49O 

3,420

3,310

5,180

3,18O

3,280

3,210

3,210

3,020 

3,250

3,250

3.56O

3,600 

3,750 

3,49O

5,68O 

5,560

5,110

-

99,4OO

5,55O

-3,048

Mar.

3,450

3,790

5,830

5,68O 

5,, 020

5,21O

5,510

5,790

4,500 

4,120

5,870 

4,O4O

4,540

4,840

*4,,940

4,61O

4,480

4,450

4,380 

4.75O

4,040

4,480

4,380 

4,890 

4,560

4,480 

3,96O

4,580

4,610

4,61O 

4,480

15O,05O

4,195

-1,816

Apr.

4,460

4,520

4,840

4,540 

4,380

4,, 170

4,340

4,80O

4,990 

4,480

4,480 

4,940

4,660

4,75O

4,520

4,840

4,940

5,380

5,940 

6,650

7.40O

10.700

9,900 

9,200 

8,550

8,700 

8,200

7,700

7,650

*7,700

182,140

6,071

+5,272

May

7,750

7.6OO

7,850

7.950 

7,500

6,500

5,790

5,440

5,28O 

5,590

6,2OO 

5,890

4,940

4,89O

4,800

5,080

5,280

4,800

4,84O 

4,480

4.52O

4,430

4,250 

4,380 

4.OOO

4,000 

3,830

5.56O

3,960

5,83O 

4,7OO

163,910

5,287

+3,468

June

3.910

3,490

3,790

3.6OO 

3,420

3,720

3.O8O

3,790

3,310 

3,380

2,960 

3,020

3,O5O

5,210

5,110

5,25O

3,O5O

3,110

2,990 

 3,110

3,110

3,14O

3,110 

2,990 

2,89O

2.520 

37350"

3,O8O

2,96O

3,420

96,920

3,231

-1,O78

July

3,140

2,920

2,860

2.160 

2,550

2,740

2,690

2,8OO

2,8OO 

2,920

2,800 

2,58O

2.72O

2,720

2,740

2,660

2,86O

2,92O

2,86O 

2,72O

2,63O

2.58O

2.74O 

2,890 

2,920

2,770 

2,96O

2.8OO

2,720

3,020 

3.530

86,720

2,797

-1,666

Av«.

5,68O

3,420

2.210

3,420 

4.21O

3,280

2,860

2,890

3,110 

2,960

3, ISO 

2,990

3,O2O

2,8OO

2,96O

2,770

2,740

2,550

2,63O 

2,490

2,83O

2,770

2,83O 

2,830 

2.89O

2,520 

2,6OO

2,520

2,44O

2,520 

2,49O

89,410

2,884

-897

Sept.

1.800

1,890

2,070

2,26O 

2,390

2,6OO

2,740

2,520

2,240 

1,980

*2,580 

2,550

2,260

2,600

2,52O

2,390

2,470

2,290

2,66O 

2,440

2,440

2,590

2,550 

2.860 

2,606

2,690 

2,520

2,560

2,440

2,55O

72,650

2,422

-1,929

Adjusted for change in reservoir contents

Mean

Cfsm 

In.

2,629 

0.794 

O.92

2,666 

O.8OE 

0.9C

Calendar year 1956: 

Water year 1956-57:

2,122 

O.641 

0.74

1,104 

0.354 

0.59

502 

0.152 

0.16

2,579 

0.719 

O.85

11,340 

3.43 

3.83

8,755 

2.65 

3.O6

Observed

tax 12,000 Mln 2,510 Mean 4,306 

Kax 10,7OO Mln 1,800 Mean 3,831

2,153 

0.65O 

O.73

1,131 

0.342 

0.39

1,987 

O.6OO 

0.69

493 

O.149 

0.17

Adjusted

Mean 4,578 Cfsm 1.38 In. 18.83 

Mean 3,115 Cfsm O.941 In. 12.81

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in reservoirs on East and West Branches 

of Penobscot River.

Note. Stage-discharge relation affected by aquatic vegetation and/or ice Oct. 1 to Mar. 12, May 29 

May~2? to Sept. 3O (no gage-height record Dec. 13 to Jan. 11; Feb. 21, 26,- discharge estimated on 

basis of records from powerplant Just upstream).
32 PENOBSCOT RIVER BASIN

Mattawamkeag River near Mattawamkeag, Maine

Location. Lat 45°30'20", long 68°18'05", on right bank at Gordon Lower Falls, 1 mile 

upstream from Mattakeunk Stream, 4 miles upstream from Mattawamkeag, Penobscot County, 

and 4} miles upstream from mouth.

Drainage area. 1,418 sq mi (revised).

Records available . October 1934 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 230 ft (from topographic map).

Average discharge.--23 years, 2,330 cfs.

Extremes.--Maximum discharge during year, 10,200 cfs Apr. 25 (gage height, 7.90 ft); minimum, 120 cfs Sept. 2, 3 (gage height, 0.42 ft).

1934-57: 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 period of ice effect, which are fair.

Rating table, water year 1956-57, except period of ice effect (g<sge 

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

0.4

.5

.7

1.0

1.6

113 

150 

Z35 

375 

755

2.3 

3.0 

4.0 

6.0 

8.0

1,270

1,820

2,860

6,080

10,500

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

419 

436

520

622

664

636 

602

664

804

860

825

741

671

608

563

532

508

496

490

472

436

414

4H

692 

1,290

1.660

1,640

1,520

1,370

1,240

1,130

23,939

772

0.544

0.63

Nov.

1,030 

958

881

825

762

713 

657

622

589

556

538

508

664

1,050

1,270

1,250

1,240

1,260

1,200

1,110

1,120

2,020

3,840

4,540 

4,320

3,790

3,410

3,320

2,980

2,670

49,693

1,656

1.17

1.30

Dec.

2.390 

2,080

1,740

1,600

1,520

1,480 

1,450

1,440

1,360

1,280

1,230

1,340

1,700

1,920

1,980

1,910

1,780

1,690

1,600

1,520

1,500

1,390

1,300

1,260 

1,250

1,130

1,060

1,020

965

910

££0_

45,655

1,473

1.04

1.20

Jan.

805 

750

705

650

615

570 

540

500

470

435

415

390

365

350

320

305

*295

275

260

250

245

240

465

1,040 

1,210

1,130

1,040

930

865

790

740

17,955

579

0.408

0.47

Feb.

685 

655

615

570

530

485 

460

440

430

425

420

415

410

*395

385

375

360

355

345

335

325

310

305

300 

295

290

315

350

_

 

11,580

414

0.292

0.30

Mar.

365 

370

355

340

325

315 

310

305

3TO

400

550

760

1,040

1,340

*1,680

1,820

1,910

1,960

1,970

1,960

1,960

1,960

2,030

2,070 

2,120

2,190

2,280

2.290

2,220

2,150

2,050

41,705

1,345

0.949

1.09

Apr.

2.010 

2,130

2,420

2,540

2,590

2,680 

3,140

3,670

3,940

3,820

3,840

3,790

3,720

3,670

3,610

3,510

3,600

3,910

4,400

5,150

6,260

7,740

9,100

9,960 

10,100

9,860

9,130

8,180

7,350

*7,080

152,920

5,097

3.59

4.00

May

7.080 

6,970

6,700

6,260

5,590

4,970 

4,450

4,000

3,720

3,540

3,640

3,780

3,670

3,370

3,210

3,490

3,670

3,510

3,110

2,750

2,400

2,060

1,860

1,740 

1,700

1,610

1,520

1,490

1,500

1,440

1.340

106,140

3,424

2.41

2.78

June

1.220 

1,130

1,120

1,140

1,160

1,100 

1,020

1,050

1,020

888

797

699

622

563

526

490

478

424

386

375

370

355

345

325

320

330

502

846

958

895

21,454

715

0.504

0.56

July

818 

734

657

576

508

490 

502

502

466

442

466

496

466

414

375

335

312

284

271

253

235

235

258

276 

294

312

316

302

280

320

490

12,685

409

0.288

0.33

Aug.

909 

1,100

1,030

1,050

1,260

1.440 

1,390

1,180

980

832

755

692

629

538

466

414

365

330

302

271

262

240

226

204 

187

163

183

183

166

150

145

18,060

583

0.411

0.47

Sept.

139 

128

ISS

158

166

175 

179

175

162

*154

150

150

150

150

150

158

280

402

406

355

307

276

262

276 

307

370

365

335

360

284

7,066

236

0.166

0.19

Calendar year 1956 i Max 13.50O Min 50 Mean 1,949 Cfsm 1.37 In. 18.92

Water year 1956-57 : Max 10,100 Min 128 Mean 1,394 Cfsm 0.983 In- 13.32

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. Z to Mar. 31.
PENOBSCOT RIVER BASIN

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 4^ miles upstream from Dover-Foxcroft, Piscataquis Covnty.

Drainage area. 297 sq mi.

Records available. August 1902 to September 1957.

Gage. Water-stage recorder. Datum of gage is 358.1 ft above mean sea level, datum of 

1929. Prior to July 20, 1930, staff gage at same site and datum.

Average discharge.--55 years, 579 cfs.

Extremes.--Maximum discharge during year, 2,990 cfs Apr. 22 (gage height, 5.91 ft); minimum, 40 cfs.Sept. 1, 2, 12, 13 (gage height, 1.80 ft).

1902-57: Maximum discharge, 21,500 cfs Apr. 29, 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 powerplants above station.

Revisions (water ye_ars). WSP 279: 1902. WSP 1171: Drainage area. WSP 1201: 1903-17,

1918-301[M), 1934-35.

Rating table 

height,

WSP 1301: 1909(M) .

, water year 1956-57, except 

in feet, and discharge, in

1.8 40 

H.O 72 

2.2 119 

2 . 5 209 

3 . 0 415

periods of ice effect 

cubic feet per second)

3 . 5 700 

4.O 1,O6O 

5.0 1,990 

5.7 2,760

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

3O

31

Total

Mean

Cfsm

In.

Oct.

149 

220

199

187

168

149

155

273

241

199

174

158

146

141

132

122

119

109

99

92

90

87

99

665

553

366

285

238

213

193

177

6,198

200

0.673

0.78

Nov.

171 

16S

155

143

138

127

122

124

122

112

83

135

141

183

177

165

171

174

146

141

168

830

912

611

385

295

370

350

280

281

7,354

245

0.825

0.92

Dec.

225

210

190

182

180

180

199

213

216

209

190

241

*352 325-

281

253

305

310

260

245

238

215

215

209

199

188

180

177

174

168

16_6

6,895

222

0.747

0.86

Jan.

*162

152

132

132

120

116

112

110

104

102

99

94

90

90

*90

87

83

81

81

79.

79

90

132

225

410

390

325

265

230

205

*170

4,637

150

0.505

0.58

Feb.

.158. 

146

140

138

132

130

128

124

124

130

130

*130

122

116

114

114

114

116

112

110

106

104

102

96

102

104

120

*132

-

3,394

121

0.407

0.42

Mar.

162 

152

140

130

116

104

102

99

120

345

740

720

599

536

531

526

575

575

504

476

435

450

558

635

581

587

642

629

575

542

*482

13,368

431

1.45

1.67

Apr.

482 64"8

814

629

593

587

821

786

726

593

617

599

654

706

617

605

807

965

1,130

1,420

2,O1O

2,690

2,100

1,980

1,740

1,630

1,430

1,290

1,180

1,180

32,029

1,068

3.60

4.02

May

~935 1,080 

828

726

617

553

470

420

374

348

460

450

*379

361

487

1,000

772

605

487

450

635

548

445

370

309

269

285

348

348

297

261

15,917

513

1.73

1.99

June

234

209

241

234

206

180

203

277

220

180

152

138

124

116

109

99

85

li

74

297

245

155

122

106

90

109

190

174

149 

241

5,033

168

0.566

0.63

July

196 

171

158

132

119

130

119

96

94

102

96

79

70

67

79

102

96

79

72

59

Se- 54

es

67

65

87

70

58

56 

320

5U

3,533

114

0.384

0.44

Arc;.

542 

366

269

273

330

253

209

174

146

141

203

216

203

162

143

122

106

92

83

72

68

59

56

51

47

48

51

61

51 

48

*46

4,691

151

0.508

0.59

Sept.

41 

47

67

74

87

76

72

72

68

61

53

41

4"3 40

46

48

53

58

58

53

53

51

99

361

111

220

168

130

112 

96

2,729

91.0

0.306

0.34

Calendar year 1956 : Max 4,790 Mln 53 Mean 483 Cfsm 1.63 In. 22.11

Water year 1956-57 : Max 2,69O Min 4O Mean 29O Cfsm 0.976 In. 13.24

Peak discharge (base, 4.OOO cfs). No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 25, 26, 28, 29, Dec. 1-5, 11, 18-?0, 22, 23, 

5, 27, Dec. 30 to Mar. 11.
34 PENOBSCOT RIVER BASIN

Sebec River at Sebec, Maine

Location.--Lat 45 t> 16'10", long 69°06'45", on right bank at Sebec, Piscataquis County, 

1,000 ft downstream from highway bridge and dam at outlet of Sebec Lake.

Drainage area. 327 sq mi.

Records available . October 1924 to September 1957.

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. 33 years, 603 cfs (unadjusted).

Extremes.--Maximum discharge during year, 1,350 cfs Apr. 26 (gage height, 4.31 ft); minimum, 94 cfs Mar. 26, 27 (gage height, 2.04 ft).

1924-57: 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 dam 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 1956-57 (gage height, in feet, and 

discharge , in cubic feet per second)

2.0 

2.2 

2.5 

3.0

139

251

495

3.5 

4.0 

4.5

810

1,140

1,460

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

135- 440 

*440

435

430

425

425

420

410

400

395

395

395

390

390

390

385 

380

376

371

371

366

371

376

376

380

376 

376

376

376

371

12,242

395 

-163

Nov.

366 

366

366

366

361

356

356

356

352

352

347

342

342

337

337

337

333 

333

337

337

337

347

361

380

380

385

405 

410

W5

405

10,794

360

-31

Dec.

405

foS

390

400

380

376

376

376

376

371

371

380

390

390

390

395

395

400

385

380

371

371

361

356

352

347

34T 

347

347

352

347

11,629

375 

-91

Jan.

347 

347

347

342

342

337

337

333

333

328

333

328

328

328

328

328

324

319

319

314

310

255

430

425

470

522~ 539

517

506

500

468

11,734

379 

-91

Feb.

430 405"

385

371

380

395

380

361

342

337

319

301

282

269

260

256

251 

247

239

235

230

218

214

210

206

203

2TT 

210

8,150

291 

-383

Mar.

214 

214

214

210

203

192

184

177

210

251

274

296

319

328

347

361

376 

376

380

380

380

380

385

385

590

280

94 

96

99

99 

99

8,193

264 

+360

Apr.

102 

102

102

99

10?

106

106

106

112

112

109

112

115

118

118

118

121 

124

127

136

166

352

790

1,160

1,210

1,260

1.290 

1,240

1,200

1,180

12,095

403 

+573

May

1.120 

1,090

1,040

1,000

978

635

490

484

478

325

177

180

195

*206

256

361

490 

586

562

534

534

522

517

534

500

462

400 

462

451

430

415

16,414 52'S

-1

June

405 

395

400

395

390

390

390

390

380

371

371

371

371

264

170

170

166 

166

166

170

170

170

173

ITS

177

180

184 

184

184

184

8,070

269 

-82

July

180 

188

184

184

184

184

184

184

184

184

184

188

188

188

188

192

192 

192

192

192

IS 2

195

1?5

195

199

199

199 

199

1?9

2C6

or 3

5,917

1P1

-58

Aug.

206 

210

210

218

226

230

230

230

230

239

243

247

251

256

256

256

256 

256

256

256

325

430

425

425

420

420

420 

415

410

 400

450

9,302

300 

-50

Sept.

495 

495

490

484

484

478

473

468

462

451

446

440

435

430

425

420

410 

305

215 310"

410

405

400

400

385

380

371 

361

356

352

12,436

415 

-285

Adjusted for change in contents in Sebec Lake and Wilson Pond

Mean 

Cfsm 

In.

232 

0.709 

0.82

329 

1.01 

1.13

Calendar year 1956: 

Water year 1956-57:

284 

0.869 

1.00

181 

0.554 

0.64

-92 

-0.281 

0.29

624 

1.91 

2.20

976 

2.98 

3.32

528 

1.61 

1.86

Observed

Max 2,880 Win 130 Mean 486 

Max 1,290 Min 94 Mean 348

187 

0.572 

0.64

153 

0.468 

0.54

250 

0.765 

0.88

130 

0.398 

0.44

AdJUFted

Mean 515 Cfsm 1.57 In. 21.44 

Mean 318 Cfsm 0.972 In. 13.18

* Discharge measurement made on this day. 

t Change in contents, equivalent in cubic feet per second, In Sebec Lake and Wilson Pond. 

Hate.. Negative figures of adjusted discharge and runoff indicate that evaporation and seepage 

from reservoirs exceeded Inflow .
PENOBSCOT RIVER BASIN 35

Pleasant River near Milo, Maine

Location . Lat 45°17'05", long 69°00'25", on left bank 2 miles northeast of Milo, Piscataquis County, and 8£ miles upstream from mouth.

Drainage area. 322 sq mi.

Records available .--June 1920 to September 1957.

Altitude of gage is 302 ft (from ri ver- prof lie mrp) . Prior

ft lower.

Gage. Water-stage recorder.

to June 17, 1929, chain gage at Snows Bridge, 2 miles downstream at datum 3

Average discharge. 37 years, 684 cfs.

Extremes . Maximum discharge during year, 3,120 cfs Apr. 22 (gage height, 4.76 ft); minimum, 93 cfs Sept. 3 (gage height, 1.68 ft).

1920-57: 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 5,500 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. Flow 

partly regulated by power development at Brownville and by small storage dan-s above 

station.

Revisions (water years). WSP 1301: 1921-22(M), 1924-27(M), 1929(M).

Rating table, water year 1956-57, except periods of ice effect (gage 

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

1.7

1.8 

2.0 

2.5

128

202

480

3.0 

3.5 

4.0

875

1,370

1,990

3,180

Discharge, in cubic feet per second, water year October 1956 to September 19^7

Day

I

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

Cfsm

In.

Oct.

310

474

*436

400

342

288

282

442

436

371

320

293

261

250

245

236

212

207

202

190

194

194

221

«

563

467 

411

365 

*326

310

10,716

346

1.07

1.23

Nov.

293

277

255

250

245

231

216

212

207

202

T98" 194

310

382

359

348

354

330

325

300

299

1,100

1.210

900 

785

685

590 

540

505 

485

12,587

420

1.30

1.45

Dec.

415

395

370

325

310

305

340

365

360

335

315

415

*645

570

480

485

495

475

430

405

370

355

335

315 

300

295

270 

260

255 

25O

250

11,490

371

1.15

1.33

Jan.

250

250

240

230

215

210

200

198

194

194

186

178

172

170

170

*170

160

154

148

144

140

148

194

250 

305

370

400 

370

340 

315

295

6,960

225

0.699

0.81

Feb.

290

280

275

255

295

270

250

240

225

230

230

*205

186

172

160

160

160

160

160

160

160

148

144

140 

T58

190

220 

250

-

5,773

206

0.640

0.67

Mar.

305

360

325

305

290

280

275

270

315

395

620

865

830

770

700

670

685

585

505

*475

440

460

455

435 

460

440

415 

380

370 

36O

360

14,400

465

1.44

1.66

Apr.

355

ISO

655

635

614

606

708

726

684

599

570

555

584

614

563

563

708

884

1,030

1,250

1,830

2,990

2,600

2,430 

2,200

2,110

1,860 

1,730

1,650

1,600

34,353

1,145

3.56

3.97

Calendar year 1956: Max 4,670 Min 90 Mean 583

May

1.590

1,170

1,000

893

8O3

717

653

599

555

541

621

614

563

*528

614

920

776

637

548

500

507

474

417

405 

394

359

388 

400

382 

342

504

19,014

613

1.90

2.19

June

288

266

288

295

282

250

299

359

504

255

226

202

198

190

169

161

151

158

155

288

261

194

161

154

144

177

348 

310

277 

359

7,127

238

0.759

0.82

Cfsm 1.81

July

376

332

288

245

240

266

255

526

510

537

304

250

216

194

198

194

182

161

144

128

122

128

148

148 

158

154

144 

138

158

541

717

7,502

242

0.752

0.87

Ajg.

676

507

405

577

754

548

461

450

565

425

548

507

417

548

504

261

216

202

190

173

161

151

135

128 

128

125

128 

119

107 

*104

101

P.679

512

0.969

1.12

Sept.

98

98

110

272

245

186

158

144

151

119

122

128

128

125

116

116

186

216

182

154

141

151

220

m

352

272 

221

198 

177

5,697

190

0.590

0.66

In. 24.65

Water year 1956-57: Max 2,990 Min 98 Mean 398 Cfsm 1.24 In. 16.78

Peak discharge (base, 3,700 cfs). No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 18-20, Nov. 24 to Apr. 4.
36 PENOBSCOT RIVER BASIN

Piscataquis River at Medford, Maine

Location.--Lat 45°15'40", long 68°5S'05", on left bank if miles southwest of Medford, 

Piscataquis County, and 3-| miles downstream from Pleasant River.

Drainage area. 1,161 sq ml.

Records available. June 1924 to September 1957.

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. 33 years, 2,249 cfs.

Extremes. Maximum discharge during year, 6,810 cfs Apr. 22 (gage height, 5.84 ft); minimum, 374 cfs July 21, 22 (gage height, 1.89 ft).

1924-57: Maximum discharge, 50,200 cfs Mar. 20, 1936 (gage height, 15.07 ft), from 

rating curve extended above 20,000 cfs by logarithmic plotting; mlnlmim, 99 cfs Oct. 28, 

1947 [gage height, 1.28 ft).

Maximum stage known, 20.8 ft May 1, 1923, at former site if miles downstream.

Remarks. Records excellent except those for period of Ice effect, which are fair. Some 

regulation for power and log-driving by lakes above station.

Revisions (water years). WSP 1171: Drainage area. WSP 1231: 1936. WSP 1301: 

1925-29{M).

Rating table, water year 1956-57, except period of Ice effect (gaje 

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

1.9

2.0 

2.5 

3.0

380

440

840

1,340

3.5 

4.0 

5.0 

5.7

1,980

2,750

4,780

6,460

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

980

1,530

1,450

1,300

1,120

1,150

1,100

1,210

1,220

1,170

1,130

980

1,060

858

813

876

921

678

759

894

714

660

820

1,960

2.580

1,810

1,610

1,250

1,150 

1,170

970

35,693

1,151

0.991

1.14

Nov.

940

960

1,060

741

858

970

750

759

840

950

835

552

945

1,320

1,130

1,110

1,180

921

1,060

1,080

960

2,600

5.700

2,750

1,910

1,610

1,710

1,680

1,540 

1,400

38,821

1,294

1.11

1.24

Dec.

1,380

1,190

1,230

1,300

1,180

1,130

1,090

1,140

1,130

1,140

1,140

*1,120

1,230

1,340

1.450

1,350

1,340

1,310

1,240

1,230

1,180

1,140

1,130

1,100

1,060

1,030

1,000

970

940 

920

895

36,025

1,162

1.00

1.15

Jan.

865

850

830

820

815

775

760

750

740

715

695

680

670

670

670

*670

670

660

660

650

650

650

860

1,130

1,410

1, 680

1,580

1,420

1,320 

1 230

1J170

27,715

894

0.770

0.89

Feb.

1.110

1,070

1,010

970

910

875

830

785

750

715

705

*695

680

670

645

610

595

595

590

580

565

550

530

525

515

515

565

685

-

19,840

709

0.611

0.64

Mar.

725

685

680

660

645

605

595

580

590

750

1,980

2,980

2,930

2,610

2,420

2,200

2,200

2,270

2,150

*2,060

1,810

1,830

1,790

2,140

2,300

2,220

2,120

1,950

1,840 

1,720

1,580

51,615

1,665

1.43

1.65

Apr.

1.550

1,9OO

2,520

2,180

1,950

1,880

2,300

2,480

2,300

2,020

1,950

1,900

1,920

2,020

1,910

1,810

2,200

2,600

2,820

3,360

4,340

6.580

5,940

5,770

5,740

5,530

5,100

4,780

4,520 

4,450

96,100

3,203

2.76

3.08

May

4,160

3,720

3,320

3,040

2,770

2,400

1,980

1,810

1,720

1,560

1,400

1,560

1,440

*1,390

1,510

2,600

2,630

2,200

1,910

1,760

1,840

1,920

1,740

1,590

1,500

1,360

1,270

1,390

1,420 

1,320

 1 ' 190

61,420

1,981

1.71

1.97

June

894

876

1,070

1.200

1,110

930

930

903

970

1,040

1,050

795

786

750

612

566

517

428

404

552

795

705

588

538

447

503

714

840

786 

813

23,112

770

0.663

0.74

July

*303

831

768

678

596

644

644

636

696

660

687

636

580

524

524

517

604

545

454

410

386

392

428

454

468

475

454

468

489 

822

^.480

18,853

608

0.524

0.60

Aug.

1.670

1,510

1,160

1,170

1,440

1,260

1,060

1,000

876

840

1,040

1,080

1,010

921

768

723

628

596

559

545

531

678

768

489

510

750

777

538

573 

*580

714

26,764

863

0.743

0.86

Sept.

777

687

652

723

768

741

687

660

696

687

696

687

678

604

580

660

741

768

644

461

447

454

670

1,130

1.220

1,020

903

786

759 

660

21,646

722

0.622

0.69

Calendar year 1956: Max 12,900 Mln 392 Mean 1,835 Cfsm 1.58 In. 21.50

Water year 1956-57: Max 6,380 Mln 386 Mean 1,254 Cfsm 1.08 In. 14.65

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

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 6 to Mar. 19.
PEHOBSCOT 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 Piseataquis River and 1 mile southwest of West Enfield, Penobscot County.

Drainage area. 6,600 sq mi, approximately (including about S40 sq mi drained by Chamberlain Lake through Telos Canal).

Records available. November 1901 to September 1957. Records prior to 1910 reprblished 

with some revisions in WSP 279.

Gage. Water-stage recorder. Datum of gage is 1S5.94 ft above mean sea level, datum of 

1§S9. Prior to Dec. 11, 1912, chain gage at same site and datum.

Average discharge. 55 years (190S-57), 11,480 cfs (unadjusted).

Extremes.--Maximum discharge during year, 29,000 cfs Apr. 23 (gage height, 9.19 ft); minimum daily, 3,400 cfs Sept. 3; minimum gage height, 2.03 ft Sept. 3.

1901-57: Maximum discharge, 153,000 cfs 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 periods of ice effect or backwater from 

aquatic growth, which are good. Flow regulated by several reservoirs above station 

(see p. 41).

Cooperation. Water-stage-recorder graph furnished by Bangor Hydro-Electric Co. 

Revisions (water years). WSF 1171: 1940. WSP 1231: 1902-13.

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1 

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.

5,750 

7,040

7,160

7,010

6,680

6,540

6,510

6,840

7,080

*7,110

6,910

6,510

6,290

6,220

5,890

5,960

6,050

5,730

5,540

5,640

5,750

5,640

5.520

6,910

9.700

9,410

8,720

7,950

7,260

6,980

6,660

208,960

6,741

-1,563

Nov.

6,340 

6,170

6,100

5,800

5,540

5,570

5,590

5,430

5,200

5,380

5,250

4.890

5,380

6,410

*6,910

6,660

6,660

6,610

6,610

6,760

6,680

8,770

15,400 

16.000

13,400

11,300

10,900

1O,60O

10,200

9,700

232,210

7,740

-1,289

Dec.

8,690 

8,080

7,340

6,910

6,810

7,010

7,210

7,440

7,420

7,470

8,270

*8,B60

10, 700

10,700

11,100

11.200

11,100

10,500

9,560

8,690

7,810

7,780

7,520 

7,040

6,610

6,270

5,930

5,800

5,700

5,470

5.160

246,150

7,940

-1,681

Jan.

5.000 

5,090

5,400

5,560

5,400

5,540

*5,800

5,800

5,750

5,640

5,640

5,610

5,610

5,590

5,540

5,520

5,380

5,310

5,290

5,250

5,290

5,570

6,640 

8,000

8,850

8,720

8,520

8,380

8,270

8,050

7,810

193,600

6,245

-2,945

Feb.

7,370 

7,210

6,910

6,610

6,340

6,200

5,960

5,820

5,520

5,610

5,750

5,700

*5,660

5,610

5,510

5,110

4,920

4,810

4,810

4,700

4,610

4,500

4.460 

4,500

4,610

4,740

4,810

4,850

-

153,010

5,465

-3,431

Mar.

4,960 

5,000

5,030

5,070

4,89O

4,810

4,570

4,590

4,850

5,290

6,030

6,760

7,600

*8,580

10,000

10.600

10,500

10,000

9,640

9,640

9,470

9,440

9,410 

9,350

9,240

9,350

9,700

10,000

10,200

9,760

9,290

243,820

7,865

-1,457

Apr.

9,090 

9,380

10,700

11,200

10,500

10,400

11,300

12,800

13,600

12,800

12,200

12,200

11,900

12,000

11,900

11,100

11, 600

12 , 900

14,100

16,000

18,600

24,OOO

28.600 

27,400

27,500

27,000

25,400

23,300

*21,700

21,2OO

482,370

16,080

+5,845

May

21.200 

19,800

19,400

18,800

17,800

16,100

13,800

12,300

11,900

11,500

11,600

12,400

12,000

10,800

10,400

11,600

13,200

12,300

11,300

10,500

9,970

9,580

9,150 

8,220

8,160

7,760

7,520

7.080

7,180

7,500

7,310

368,130

11,880

+3,466

June

7.570 

6,580

6,270

6,860

6,740

6,320

6,390

5,930

6,320

6,120

6,100

5,400

5,200

5,200

5,340

5,140

5,110

4,89O

4,780

4,760

*5,000

5,070

5,000 

4,610

4,380

4.250

4,460

5,730

5,820

5,610

166,950

5,565

-1,160

July

,960 

,610

,070

,870

,130

,290

,590

,44O

,780

,760

,760

,760

,440

,460

,590

,460

,940

,360

,630

,250

.770

,130

,830 

,270

,250

,550

,360

,340

,020

,650

,660

14 ,980

,548

- ,704

Aug.

7,730 

7,550

7,180

6,360

7,890

8,220

7,180

6,100

5,930

5,820

5.680

6,050

5,820

5,700

5.070

4,920

4,780

4,320

4,190

4,250

4.020

4,320

4,630 

4,400

4,420

4,420

4,480

4,290

4,130

4,100

4,230

168,180

5 425

-947

Sept.

,290 

,590

,400

,900

,040

,080

,460

,570

,320

* ,130

,170

,420

,340

,170

,210

,13O

,550

,610

,920

,550

,230

,080

,960 

,70O

.220

,810

,700

,340

,000

3,920

128,810

4,294

-2,214

Adjusted for change in reservoir contents

Mean 

Cfsm

In.

5,178 

0.785 

0.90

6,451 

0.977 

1.09

Calendar year 1956: 

Water year 1956-57:

6,259 

0.948 

1.09

3,300 

0.500 

0.58

2,034 

O.3O8 

0.32

6,408 

0.971 

1.12

21,920 

3.32 

3.70

15,350 

2.33 

2.69

Observed

Max 46,200 Mln 3,440 Mean 9,396 

Max 28,600 Mln 3,4OO Mean 7,488

4,405 

0.667 

0.74

2,844 

0.431 

0.50

4,4:78 

0.678 

0.78

2,080 

0.315 

0.35

Adjusted

Mean 9,696 Cfsm 1.47 In. 19.97 

Mean 6,742 Cfsm 1.O2 In. 13.86

Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in reservoirs on West and Best Branches 

of Penobscot River, and Sebec Lake and Wilson Pond in Plscataquls River basin.

Note. Stage-discharge relation affected by ice Dec. 4-13, Dec. 19 to Mar. 27. Backwater from 

aquatic growth Oct. 1 to Dec. 3, June 22 to Sept. 3O.
38 PENOBSCOT RIVER BASIN

Passadumkeag River at Lowell, Maine

Location. Lat 45°11'00", long 68°28'25", on right bank at Lowell, 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 1957.

Gage. Water-stage recorder. Datum of gage is 151.3 ft above mean sea level, datum of 

1929. Oct. 1, 1915, to Sept. 30, 1917, chain and staff gages at same site and datum. 

Oct. 1, 191V, to Nov. 30, 1921, chain gage at site on left bank 400 ft downstream from 

highway bridge at different datum.

Average discharge. 42 years, 487 cfs.

Extremes. Maximum discharge during year, 948 cfs Apr. 9 (gage height, 3.33 ft); maximum 

gage height, 3.72 ft Jan. 2 (backwater from ice); minimum discharge, 75 cfs Sept. 30 

(gage height, 0.88 ft).

1915-57: 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 (water years). WSP 821: Drainage area.

Rating table, water year 1956-57, except periods of Ice effect (gage 

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

0.8

.9

1.1

1.5

62

78

114

205

2.0 

2.5 

3.0 

3.4

365

560

780

990

Discharge, In cubic feet per second, water year October 1956' to SeptembRr 1957

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

Mean

Cfsm

In.

Oct.

147

165

184

195

195

187

187

213

238

244

226

208

187

172

160

149 

138

130

122

116

HE

108

114

149

195

226

235

224

205

187 

172

5,490

177

0.59E

0.68

Nov.

160

149

140

130

122

118

114

112

110

104

103

103

149

205

E58

277 

274

261

246

224

215

343

556

649

658

612

55E

488

422

373

8,225

274

0.916

1.02

Dec.

324

287

250

220

200

200

20E

226

252

261

260

295

524

588 580"

556 

536

480

435

375

345

3E4

285

260

244

225

210

200

196

184 

178

9,702

313

1.05

1.21

Jan.

170

162

158

152

150

150

150

150

148

148

144

144

142

14E

140

*140 

138

134

126

118

110

Tl2

174

415

4lO

395

380

355

330

295 

265

6,147

198

0.662

0.76

Feb.

245

225

210

192

182

170

156

14E

158

180

150

13E

*128

122

116

m128

12 E

120

118

118

118

116

116

114

114

134

_

4,066

145

0.485

0.50

Mar.

142

144

132

126

126

124

124

TTO" 122

275

420

440

450

460

490

520 

552

556

536

504

464

441

433

437

441

437

430

418

»399

376 

350

11,039

356

1.19

1.37

Apr.

335

369

496

568

576

600

694

855

930

910

850

800

760

716

672

620 

584

584

612

658

735

830

890

930

942

925

890

835

785

790

21,741

725

2.42

2.70

May

815

82O

805

77O

712

654

604

572

560

576

616

654

667

667

698

770 

815

820

790

755

721

676

636

654

568

548

512

535

544

536 

552

20,623

665

2.22

2.56

June

616

640

654

644

640

628

604

576

556

532

504

476

453

430

418

407 

384

346

328

280

238

213

197

187

179

184

205

246

287

324

12,376

413

1.38

1.54

July

411

460

468

453

430

403

380

358

335

3E4

310

300

290

274

277

290 

296

287

274

252

235

226

218

218

E16

216

213

210

189

192 

200

9,205

297

0.993

1.14

Aug.

210

208

195

187

182

177

172

162

174

144

142

149

162

169

172

167 

155

142

130

124

118

114

108

104

103

104

106

104

103

95

Q? ££.

4,474

144

0.482

0.56

Sept.

88

86

86

88

88

85

85

88

*88

88

90

92

95

101

103

104 

106

154

104

101

101

99

99

97

93

90

85

81

78

J76

2,769

92.3

0.309

0.34

Calendar year 1956: Max 1,680 Mln 54 Mean 400 Cfsm 1.34 In. 18.13

Water year 1956-57: Max 942 Mln 76 Mean 317 Cfsm 1.06 In. 14.38

* Discharge measurement made on this day.

Note_.--Stage-discharge relation affected by Ice Dec. 3-5, 11, 12, 18-21, 23, 24, Dec. 26 to 

Mar. 16.
PEHOBSCOT RIVER BASIN 39

Penobscot River at Passadumkeag, Maine

Location. Lat 45°10'55", long 68°37'20", on left bank at Passadumkeag, Penobfcot County, 

at head of Passadumkeag Rips, 1,800 ft downstream from Passadumkeag River.

Drainage area. 7,000 sq mi, approximately (including about 840 sq mi drained by Chamberlain Lake through Telos Canal).

Records available. October 1938 to September 1957. October, November 1938 monthly discharge only, published in WSP 1301.

Gage. Water-stage recorder. Datum of gage is 123.6 ft above mean sea level, unadjusted. 

Average discharge. 19 years, 12,080 cfs (unadjusted).

Extremes. Maximum discharge during year, 31,400 cfs Apr. 23 (gage height, 7.31 ft); minimum, 3,440 cfs Sept. 3 (gage height, 2.73 ft).

1938-57: Maximum discharge, 186,000 cfs Apr. 14. 1940 (gage height, 13.62 ft); minimum, 2,600 cfs Sept. 1, 1941 (gage height, 8.44 ft).

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

regulated by several reservoirs above station (see p. 41).

Revisions (water years).--WSP 1171: 1940.

Rating table, water year 1956-57, except period of ice effect (gage 

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

2.7 

3.0 

3.5 

4.0

3,370

4,060

5,650

7,500

5.0 

6.0 

7.0 

7.3

12,800

19, 700

28,200

31,300

Discharge, in cubic feet per second, water year October 1956 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

(t)

Oct.

6,260 

7,580

7,620 

7,390

7,040

6,780

6,700

7,160

7,390

*7,420

7,200

6,700

6,560

6,330

6,080

6,260

6,260

5,940

5.720

5,790

5,940

5,830

5,760 

7,660

10.800

10,100

9,090

8,490

7,700

7 350 

7^040

219,940

7,095

-1,563

Nov.

6,700 

6,520

6,520 

6,230

5,970

5,940

5,970

5,760

5,510

5,830

5,510

5.180

5,900

7,200

7,420

7,200

7,200

7,160

7,200

7,160

7,010

10, 600

17.700 

17,700

14,600

12,300

12,000

11,600

11,100

10,300

252,990

8,433

-1,289

Dec.

9,040 

8,450

7,500 

7,420

7,420

8,000

7,660

8,170

7,700

7,420

8,170

8,880

10, 600

11,300

15.100

11,200

10,200

10,100

10,100

9,190

8,270

8,210

7,900 

7,390

6,940

6,570

6,210

6,070

5,960

5,720 

5j400

256,260

8,266

-1,681

Jan.

5.250 

5,300

5,610 

5,560

5,600

5,740

6,000

6,000

5,950

5,840

5,830

5,800

5,800

5,780

5,730

5,710

5,560

5,490

5,460

5,410

5,440

5,720

6,870 

8,550

9,580

9,240

9,020

8,850

8,710

8,440 

8,160

201,780

6,509

-2,945

Feb.

7.700 

7,510

7,190 

6,860

6,580

6,430

6,170

6,010

5,730

5,850

5,950

5,880

5,830

5,770

5,460

5,260

5,090

4,980

4,970

4,860

4,770

4,660

4.620 

4,650

4,760

4,890

4,960

5,030

_

158,420

5,658

-3,431

Mar.

5,150 

5,190

5,210 

5,240

5,060

4,980

4.740

4,750

5,080

5,660

6,590

7,340

8,200

9,190

10,500

11 . 500

11,200

10, 700

10,400

10,500

10,100

10,000

9,990 

9,950

9,830

9,930

10,500

11,000

11,300

10,600 

10,200

260,160

8,392

-1,457

Apr.

9,790 

10,400

12,500 

12,500

11,600

11,500

13,300

14,700

15,300

14,400

13,900

13,800

13,500

13,700

13,400

12,700

13,400

14,600

16,000

18,400

21,600

27,600

50, 900 

29,300

29,200

28,600

27,200

25, 300

*23,600

23,000

535, 690

17,860

+5,845

May

22.800

21,600

21,000 

20,200

18,900

17,300

15,000

13 , 800

13,000

12,600

12,700

15,800

15,000

11,800

11,500

15,800

14,800

15 , 800

12 , 600

11,700

11,200

10,600

10,200 

9,300

9,140

8,540

8,220

7.790

8,000

8,130 

7,950

404,770

13,060

+5,466

June

8.260 

7,510

7,040 

7,500

7,420

6,970

7,010

6,670

6,890

6,650

6,590

5,870

5,690

5,580

5,720

5,450

5,450

5,080

4,910

4,940

*5,150

5,220

5,260 

4,940

4,810

4.680

4,680

6,150

6,150

6,050

180,030

6,001

-1,160

July

6.480 

6,150

5,530 

5,350

4,550

4,680

5,010

4,840

5,150

5,120

5,120

5,080

4,750

4,750

4,880

4,750

4,250

4,560

4,720

4,500

4.040

4,300

4,110 

4,480

4,590

4,680

4,480

4,450

4,140

4,840 

6,010

150,350

4,850

-1,704

Aug.

8,090 

7,700

7,510 

6,670

8.550

8,350

7,350

6,250

5,970

5,940

5,790

6,150

5,940

5,790

5,180

5,010

4,840

4,420

4,220

4,450

4,500

4,500

4,810 

4,530

4,590

4,750

4,620

4,420

4,250

4,140

4,280

172,940

5,579 -947

Sept.

4,300 

3,700

5^520 

4,060

4,140

4,280

4,560

4,560

4,330

*4,090

4,040

4,330

4,360

4,140

4,220

4,250

4,810

4,810

5,040

4,680

4,390

4,300

4,200 

4,940

5.560

5,040

4,940

4,560

4,200

4,200

152,350

4,412

-2,214

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

5,532 

0.790 

0.91

7,144 

1.02 

1.14

Calendar year 1956: 

Water year 1956-57:

6,585 

0.941 

1.08

3,564 

0.509 

0.59

2,227 

0.318 

0.33

6,935 

0.991 

1.14

23, 700 

3.39 

3.78

16,530 

2.36 

2.72

Observed

Max 48,300 Mln 3,520 Mean 10,040 

Max 30,900 Mln 3,520 Mean 8,016

4,841 

0.692 

0.77

3,146 

0.449 

0.52

4,652 

0.662 

0.76

2,198 

0.514 

0.55

Adjusted

Mean 10,340 Cfsm 1.48 In. 20.09 

Mean 7,270 Cfsm 1.04 In. 14.09

* 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, and Sebec Lake and Wilson Fond in Fiscataquis River basin. 

Note. Stage-discharge relation affected by ice Dec. 19 to Mar. 27.
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 ml.

Records available. October 1941 to September 1957.

Gage. Water-stage recorder. Altitude of gage Is 97 ft (from topographic map).

Average discharge.--16 years, 302 cfs.

Extremes. Maximum discharge during year, 1,310 cfs Nov. 23 (gage height, 5.83 ft); minimum, 2.3 cfs Sept. 7.

1941-57: 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 or backwater from aquatic 

growth, 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 1956-57, except periods or Ice effect or backwater from 

aquatic growth (gage height, In feet, and discharge, In cubic feet per second)

l.o

1.2

1.3 

1.5

1.0 

6.0

25

1.7 

2.0 

2.5 

3.0

42

76

153

263

4.0 

5.0 

5.8

560

955

1,300

Discharge, In cubic feet per second, water year October 1956 to September 1957

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"4" 31

93

66

54

49

51

*94

98

76

63

52

46

42

39

38

37

34

31

31

31

31

37 

280

569

241

175

135

114

98

89

2,729

88.0

0.494

0.57

Nov.

82

76

72

67

67

62

60

56

55

54

51

53

205

404

304

*246

198

175

140

124

137

815

1.260 

1,040

595

300

392

370

310

260

8,030

268

1.51

1.68

Dec.

230

210

192

170

160

156

156

192

152

146

*153

358

710

564

413

310

255

220

198

176

158

140

132 

122

114

106

98

91

84

82

76

6,324

204

1.15

1.33

Jan.

68

66

61

58

55

52

50

48

46

44

42

40

38

37

36

35

33

32

31

29

*27

28

200 

955

835

700

560

465

400

335

280

5,686

183

1.03

1.19

Feb.

240

205

176

142

128

112

100

90

84

77

*75

70

68

64

63

61

63

70

75

72

68

66

63 

61

61

62

76

90

_

2,582

92.2

0.518

0.54

Mar.

112

120

116

110

104

100

98

100

172

1,040

1,110 '955

790

780

720

680

705

630

590

550

*515

510

545 

595

525

460

420

395

370

350

340

14, 607

471

2.65

3.06

Apr.

335

520

911

706

574

605

1,110

1.140

927

718

782

714

718

670

557

489

492

529

526

557

623

638

557 

485

416

386

361

336

314

401

18,097

603

3.39

3.78

May

422

349

288

253

214

181

163

*146

130

121

181

194

*167

151

214

625

*506

355

246

198

413

395

306 

234

169

132

114

118

120

100

86

7,291

235

1.32

1.52

June

68

63

108

108

89

71

66

73

58

45

40

34

33

31

31

29

*25

21

22

22

19

17

17 

16

18

36

53

52

40

33

1,338

44.6

0.251

0.28

July

24

21

20

20

22

25

24

22

23

28

25

*23

19

17

19

24

24

20

17

14

10

12

14 

14

13

12

10

12

14

25

17.

644

2C.8

0.117

0.13

Aug.

75

76

48

36

30

30

24

19

17

17

18

19

19

17

15

15

14

12

10

8.5

*8.0

8.0

7.0 

6.0

5.0

5.4

6.0

5.0

4.7

4.4

5.4

582.4

18.8

0.106

0.12

Sept.

2.8

2^4

2.8

3.4

3.1

2.6

2.4

2.4

2.6

2.4

2.6

2.8

4.1

5.7

5.7

5.7

6.0

11

15

*13

12

11

10 

9.0

6.5

6.5

6.0

5.0

4.4

4.1

173.0

5.77

0.032

0.04

Calendar year 1956 : Max 3,400 Mln 7.5 Mean 285 Cfsm 1.60 In. 21.82

Water year 1956-57 : Max 1,260 Mln 2.4 Mean 187 Cfsm 1.05 In. 14.24

Peak discharge (base, 1,600 cfs). No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Dec. 16 to Apr. 1. Backwater from aquatic growth 

Oct. 1-23, May 27 to Sept. 30. No gage-height record Nov. 23 to Dec. 11, June 27 to July 12; discharge estimated on basis of recorded range in stage, weather records, and records for nearby stations.
PENOBSCOT RIVER BASIN 41

Reservoirs in Penobscot River basin, Maine

Chesuncook. Ripogenus, 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 completed in 

1917 for power and log driving; usable capacity of reservoir, 30,000,000,000 c-i ft. 

Records furnished t>f Great Northern Paper Co.

Amba.1e.1us. Pemadumcook. North Twin. South Twin, and Elbow Lakes in West Branch Penobscot 

River basin are controlled by North Twin Dam, 3 miles upstream from Millinocket, Penobsoot 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 dan rebuilt 

in 194S at outlet of Grand Lake, in T. 6, R. 8, Penobscot County; usable capacity, 

1,785,000,000 cu ft between elevations 643.0 and 655.0 ft. Records furnished by Bangor 

Hydro-Electric Co.

Sebeo Lake on Sebec River at Sebec, Piscataquis County, used for power and log driving; 

usable capacity, 2,511,000,000 cu ft between elevations 316.1 and 3S5.1 ft. Records 

furnished by Bangor Hydro-Electric Co.

Wilson Pond on Wilson Stream, 2f miles east of Greenville, Piscataquis County, u^ed 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 millions of cubic feet, water year October 1956 to September 1957

Month

Sept. 30.. ..............................

Chesuncook, Ripogenus 

Caribou, Ambajejus, 

Pemadumcook, North Twin, 

South Twin, and Elbow 

Lakes and Moose Pondt

29,487 

26,498 

23,781 

19,845 

14,006 

8,170 

4,015 

14,842 

22,210 

19,647 

15,407 

13,256 

8,737

Chamberlain, Telos, 

Second, and 

Grand Lakes 

and 

Round Pond

5,751 

4,991 

4,448 

4,126 

2,608 

1,071 

362 

3,201 

5,120 

4,889 

4,668 

4,416 

3,936

Wilson 

Pond and 

Sebee 

Lake

2,491 

2,055 

1,974 

1,730 

1,201 

275 

1,236 

2,722 

2.71S 

2,506 

2,403 

2,270 

1,531

t Includes month-end contents of following additional reservoirs in West Branch Penobscot River 

basin; used primarily for log driving (total capacity approximately 12,000,000,000 cu ft); Penobscot, Seboomook, Caucomgomoc, Loon, Shallow, Umbazooksus, Harrington, Sourdnahunk, Raintow, Ragged 

and Millinocket Lakes, Canada Falls Reservoir, Dole and Poland Ponds.

505692 0-59-4
42 SHEEPSCOT RIVER BASIN

Sheepscot River at North Whitefield, Maine

Location. Lat 44°13'20", long 69°35'40", on left bank at North Whitefield, Lincoln County, 

Just upstream from highway bridge, half a mile downstream from Pleasant Pond Brook.

Drainage area. 148 sq mi.

Records available.--October 1938 to September 1957.

Gage. Water-stage recorder. Datum of gage is 101.1 ft above mean sea level, datum of 

1929.

Average discharge. 19 years, 230 cfs.

Extremes. Maximum discharge during year, 1,010 cfs Jan. 23 (gage height, 5.08 ft); minimum, 5.6 cfs Sept. 29, 30 (gage height, 1.69 ft).

1938-57: 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 bv logarithmic plotting; minimum, 5.0 cfs Oct. 24, 1941 (gage height, 1.70 ft).

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

regulation at low flow by sawmill at North Whitefield.

Revisions (water years). WSP 1231: 1940.

Hating table, water year 1956-57, except periods of Ice effect (gage 

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

1.6

1.9

2.0 

2.2 

2.4

3.3

14

20

38

62

2.6 

3.0 

3.5 

4.0 

4.6

93

180

325

520

770

Discharge, In cubic feet per second, water year October 1956 to September 1957

Some

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

87

83

79

76

72

101

140 

108

95

88

82

79

77

74

71

70

68

68

64

62 

59 

140

555 

295

*211

190

180

163

149

140

3,817

123

0.831

0.96

Nov.

235

286

217

188

170

156

147

142 

144

135

122

166

307

295

244

232

226

223

217

202

232

428

384

392

440

440

380

350

8,248

275

1.86

2.08

Dec.

304

283

253

235

214

208

226

274 

256

238

*235

488" 535

420

384

400

404

372

322

307

283 

265 

241

235 

244

235

214

205

200

192

182

8,854

286

1.93

2.22

Jan.

166

156

144

132

126

120

112

102 

97

91

87

77

74

*72

68

64

61

58

56

54

52 

112 

485" 745

356

322

307

289

274

260

240

5,359

173

1.17

1.35

Feb.

220

205

188

176

168

158

150

142 

138

138

*166

144

130

120

104

102

102

101

99

95

93 

90 

87

87 

87

100

182

200

_

3,772

135

0.912

0.95

Mar.

180

168

163

154

144

133

127

125 

415

520

580

350

*336

364

372

408

468

440

396

364

336 

339 

342

328 

307

304

304

292

274

259

232

9,324

301

2.03

2.34

Apr.

220

313

404

336

336

500

584

560 

528

500

552

544

600

528

468

440

416

400

376

364

356 

342

316

304 

289

283

277

265

253

253

11,907

397

2.68

2.99

May

241

220

205

192

180

168

158

151 

142

140

140

135

129

135

163

253

182

158

144

188

252 

226

208 

192

180

170

175

173

151

140

5,654

182

1.23

1.42

June

129

127

142

129

120

112

110

110 

101

93

90

90

90

87

87

83

76

70

77

85

82 

72 

64

57 

56

66

*99

99

90

71

2,764

92.1

0.622

0.69

July

58

53

49

48

49

52

46

42 

45

59

54

45

42

40

37

33

33

31

28

26

25 

55

64

42 

54

50

41

34

31

34

29

1,329

42.9

0.290

0.33

Aug.

28

28

26

24

22

21

19

18 

18

18

19

19

16

15

15

15

14

13

13

13

13 

12 

12

11 

10

11

13

14

*11

10

10

501

16.2

0.109

0.13

Sept.

10

9.6

10

11

TT

10

10

10 

10

10

9.6

9.6

9.6

9.2

8.5

8.5

8.1

7.8

7.8

7.4

7.4 

7.4

8.5

8.1 

8.1

7.4

7.0

6.3

 sTF 5.6

259.1

8.64

0.058

0.06

Calendar year 1956: Max 1,880 Mln 16 Mean 253 Cfsm 1.71 In. 23.24

Water year 1956-57 : Max 745 Mln 5.6 Mean 169 Gfsm 1.14 In. 15.52

Peak discharge (base, 1,100 cfs). No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Dec. 30 to Jan. 22, Jan. 30, 31, Peb. 3-7, 9, 

12-14, 16, 20-22, Peb. 26 to Mar. 1.
KENNEBEC RIVER BASIN 43

Moosehead Lake at East Outlet, Maine

Location. Lat 45°35'10", long 69°42'45" 

Piscataquis County.

at wharf at east outlet of lake, at Moo3ehead,

Drainage area.--1,240 sq mi, approximately. 

Records available. April 1895 to September 1957.

Gage. Staff gage read daily at 7 a.m. Datum of gage is 1,011.48 ft above mean sea level, 

la turn of 1929. '

Extremes. Maximum gage height observed during year, 16.58 ft Aug. 8; minimum observed, 

11.46 ft Mar. 8.

1895-1957: 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 ' 

1540. 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. Lake 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, July, and September some water was diverted through gates in dam at West Outlet.

Cooperation. Sage-height record furnished by Kennebec Water Power Co. 

Revisions (water years). WSP 1111: 1946-47 (change in contents).

Capacity table, water year 1955-56 (gage height. In feet, 

and capacity, In millions of cubic feet)

10.0 

11.0 

1Z.O 

13.0 

14.0

3,110

6,237

9,379

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 1956 to September 1957

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.

14.56 

14.56

14.55

14.48

14.45

14.42

14.38

14.37 

14.37

14.29

14.26

14.23

14.18

14.16

14.16

14.16

14.12

14.12

14.10

14.07

13.99

13.98

13.95

13.96

13.95

13.90 

13.89

13.87

13.85

13! 82

11,968

-2,473

Nov.

13.81 

13.81

13.81

13.79

13.78

13-. 75

13.73

13.72 

13.70

13.70

13.66

13.62

13.62

13.58

13.55

13.55

13.55

13.55

13.53

13.51

13.51

13.54

13.57

13.57

13.62

13.63 

13.66

13.66

13.68

13 . 81

11,937

-31

Dec.

13.82 

13.87

13.92

13.95

13.97

14.04

14.08

14.08 

14.10

14.15

14.10

14.13

14.13

14.10

14.09

14.07

14.04

14.08

14.15

14.17

14.21

14.23

14.25

14.27

14.33

14.34 

14.39

14.41

14.41

14.45

14.46

13,996

+2,059

Jan.

14.46 

14.46

14.45

14.43

14.43

14.41

14.38

14.35 

14.30

14.28

14.27

14.19

14.12

14.09

14.05

14.00

13.96

13.90

13.80

13.74

13.62

13.53

13.47

13.45

13.37

13.36 

13.32

13.29

13.22

13 21

13!l4

9,820

-4,176

Feb.

13.10 

13.06

13.00

12.95

12.88

12.80

12.76

12.72 

12.63

12.59

12.53

12.47

12.35

12.33

12.25

12.15

12.08

12.05

11.95

11.90

11.85

11.76

11.70

11.64

11.63

11.59 

11.63

11.57

_

4,891

-4,929

Mar.

11.57 

11.56

11.55

11.55

11.53

11.50

11.48

11.46 

11.50

11.55

11.58

11.54

11.52

11.59

11.59

11.63

11.65

11.66

11.69

11.70

11.70

11.72

11.73

11.73

11.73

11.75

11.75

11.75

11.75

11.75

11.75

5,454

+563

Apr.

iHs1 -11 . to

11.79

11.80

11.90

11.93

11.93

11.94 

11.94

11.94

11.95

11.98

12.00

12.00

12.00

12.01

12.03

12.05

12.06

12.10

12.13

12.28

12.38

12.48

12.54

12.69 

12.81

12.88

12.97

15.06

9,568

+4,114

May

13.15 

13.23

13.28

13.21

13.29

13.31

13.33

13.36 

13.40

13.44

13.56

13.58

13.62

13.72

13.78

13.88

13.93

13.97

14.00

14.00

14.05

14.10

14.14

14.17

14.20

14.22 

14.27

14.37

14.40

14.40

14.43

13,900

+4,332

June

14.46 

14.48

14.58

14.62

14.65

14.67

14.69

14.70 

14.70

14.68

14.67

14.66

14.66

14.60

14.60

14.58

14.58

14.57

14.60

14.62

14.67

14.74

14.92

15.03

15.10

15.17 

15.23

15.30

15.31

15 42

_ __ 1 _

17,053

+3,153

July

15.50 

15.57

15.62

15.70

15.74

15.82

15.83

15.88 

15.91

15.96

15.99

16.02

16.03

16.04

16.07

16.07

16.10

16.07

16.04

16.03

16.00

16.00

15.97

15.97

15.97

15.93 

15.92

15.91

15.85

15 91 15)97

18,812

+1,759

Aug.

16.12

16.13

16.13

16.40

16.48

16.52

16.55

16.58 

16.56

16.55

16.53

16.53

16.48

16.43

16.37

16.31

16.24

16.20

16.13

16.08

16.00

15.92

15.85

15.78

15.70

15.64 

15.63

15.54

15.47

15.38

15.30

16,670

-2,142

Sept.

15.24 

15.20

15.12

15.19

15.16

15.13

15.06

15.02 

14.96

14.92

14.64

14.80

14.77

14.70

14.63

14.60

14.62

14.59

14.53

14.48

14.43

14.40

14.46

14.41

14.37

14.28 

14.21

14.12

14.05

14.00

12,537

-4,133

Calendar year 1956................... * +3,545

Water year 1956-57................... * -1,904

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, 45 cfs; July, 54 cfs; September, 157 cfs.
44 KENNEBEC RIVER BASIN

Kennebec River at Moosehead, Maine

Location. Lat 45°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 mi, approximately. 

Records available. October 1919 to September 1957.

Gage. Water-stage recorder. Datum of gage is 1,015.53 ft above mean sea level, datum of 

1929. Prior to Oct. 9, 1924, chain gage on railroad bridge 300 ft downstream at same 

datum.

Average discharge. 38 years, 1,852 cfs (unadjusted).

Extremes.--Maximum discharge during year, 5,200 cfs Jan. 3 (gage height, 5.76 ft); minimum, 63 cfs Mar. 10 (gage height, 1.97 ft).

1919-57: Maximum discharge, 15,600 cfs May 8, 1947 (gage height, 9.94 ft); minimum, 

about 62 cfs Apr. 7-15, 1923.

Remarks. Records good except those for period of backwater from debris, which are fair. 

Some water diverted down west channel by leakage and occasional opening of gates in 

dam at West Outlet. Flow regulated by Moosehead Lake (see preceding page) and by 

Brassua Lake and Second and First Roach Ponds (see p. 54).

Revisions (water years). WSP 1301: 1928-50 (adjusted monthly runoff).

Rating table, water year 1956-57, except period of backwater from debris 

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

2.0 

2.2 

2.4 

2.7 

3.0

130

220

420

650

3.5 

4.0 

4.5 

5.0 

5.2

1,110

1,750

2,540

3,500

3,910

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

2,310 

2,290

2,290

2,240

2,210

2,190

2,180

2,490

2,740

2,490

2,270

2,230

2,210

2,190

2,060

2,190

2,180

2,190

2,150

2,110

2,080

2,310

2,740

2,170

2,080

1,760

1,570

1,580

1,370

1,260

1.220

65,350

2,108

-1,026

Nov.

1,210 

1,200

1,200

1,190

1,130

1,150

1,180

1,160

1,160

1,160

1,130

1,110

1,120

1,120

1,120

1,160

01,100

01,100

cl,100 ci.oao

cl.080

01,100

0725

C500

oSlO

0865

cl.160

1,100

1,140

1.220

32,280

1,076

-201

Dec.

1,290 

1.110

1,430

1,580

1,580

1,600

1,610

1,670

1,670

2,000

2,980

3,080

3,080

3,080

3,040

3,020

3,000

3,080

3,120

3,180

3,220

3,260

3,260

2,430

1,840

2,840

3,420

3,520

3,560

3,600

5.760

80,910

2,610

-1,457

Jan.

3.910 

*3,890

*3,910

3,600

3,560

3,540

3,500

3,500

3,480

3,500

3,420

3,400

3,340

3,560

3,680

3,600

3,680

3,760

3,700

3,680

3,620

3,540

*3,220

2,830

2,570

2,390

2,340

2,310

2,310

0 OQf\ c. . cy\j

2,440

102,070

3,293

-2,272

Feb.

2,520 

2,610

2,760

2,910

3,000

3,020

3,060

3,020

3,020

3,000

3,120

3,260

3,240

3,240

3.28Q

3,140

2,780

2,800

2,820

2,800

2,820

2,650

2,540

2,540

2,520

2,350

1,690

1.230

77,740

2,776

-2,148

Mar.

1,230 

1,230

1,220

1,200

1,200

1,380

1,470

1.510

1,350

640

640

910

705

554

554

325

70

480

385

280

280

287

294

294

480

562

554

554

554

562

554

22,308

720

+227

Apr.

540 

562

380

256

250

250

244

475

658

658

658

658

666

158

658

658

658

570

230

172

184

109

100

*100

100

100

100

100

100

100

10,952

365

+3,169

May

100 

103

106

106

255

610

560

1,350

1,480

1.6S_Q

1,030

595

670

124

590

150

345

685

720

585

530

665

175

180

670

1,570

162

170

605

1,250

1,140

18,961

612

+2,960

June

270 

1,750

1,120

1,840

2,130

2,550

2.700

2,700

2,680

2,370

1,820

1,600

2,390

2,260

2,080

2,070

2,100

2,130

2,180

2,230

1,370

1,180

1,450

2,460

2,470

2,490

1,930

1,470

1,180

1,200

58,170

1,939

-307

July

1,240 

1,330

1,390

780

1,690

2,290

575

400

1,420

1,020

1,020

1,370

1,640

1,620

1,810

2,130

2,110

2,110

2,130

2,130

2,100

1,940

1,380

1,280

910

910

910

1,000

1,390

835

965

43,825

1,414

-550

Aug.

335

121

124

127

124

124

124

775

1,700

2,190

2,180

2,290

2,520

2,520

2,520

2,520

2,510

 2,490

2,590

2,720

2,780

2,710

2,370

2,350

2,320

2,310

2,460

2.990

2, 930

2,890

2,160

58,874

1,899

-797

Sept.

1,860 

1,920

1.950

1,920

1,900

1,900

1,880

1,870

1,840

1,820

1,810

1,800

1,780

1,760

1.500

1,720

1,740

1,720

1,710

1,690

1,680

1,680

1,680

1,670

1,650

1,620

1,610

1,580

1,570

1,550

52,160

1,759

-1,452

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

1,082 

0.875 

1.01

875 

0.706 

0.79

Calendar year 1955: 

Water year 1955-57:

1,155 

0.950 

1.07

1,021 

0.825 

0.95

628 

0.506 

0.55

947 

0.764 

0.88

5,534 

2.85 

5.18

5,572 

2.88 

5.32

Observed

*ax 5,760 Mln 196 Mean 1,645 

Max 5,910 Mln 70 Mean 1,708

1,652 

1.52 

1.47

.864 

0.697 

C.80

1,102 

0.889 

1.02

267 

0.215 

0.24

Adjusted

Mean 1,966 Of an- 1.59 In. 21.58 

Mean 1,595 Cfar 1.12 In. 15.26

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Brassua, and Moosehead Lakes, 

lecond and First Roach Ponds; also diversion through West Outlet, 

o Backwater from debris.
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 1957.

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, 19]9, waterstage recorder and chain gage, at highway bridge half a mile downstream at different 

datum.

Average discharge. 56 years, 2,529 cfs (unadjusted).

Extremes. Maximum discharge during year, 8,310 cfs Jan. 20 (gage height, 6.14 ft); minimum daily, 325 cfs Mar. 17.

1901-57: 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 for periods of ice effect, 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: 1902-4, 1906-8, 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 1956-57, except periods of ice effect (gage 

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

1.7 

2.0 

2.5 

3.0

290

510

965

1,550

3.5 

4.0 

4.4

2,270

3,170

3,970

Discharge, in cubic feet per second, water year October 1956 to September 19f7

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.

3,020

2,970

2,620

*3,050

2,310

5.460

1,890

2,720

3,180

3,060

2,580

2,440

2,150

2,220

2,690

1,930

2,060

2,650

2,520

2,180

2,320

2,530 

3,050

2,030

2,300

2,110

1,810

1,750

1.510

1,460

1,390

73,760

2,579

-1,131

Nov.

1,580

1,520

1.680

680

1,550

940

1,500

1,190

1,580

1,140

830

1,590

1,260

1,070

*1,050

1,120

990

1,550

1,590

1,160

1,550

650 

1,060

1,150

660

1,540

1,450

1,300

1,250

1,160

56,440

1,215

-194

Dec.

1,460

1,240

2,140

1,240

1.080

1,720

1,680

1,910

1,620

1,910

3,010

2,840

2,890

2,900

2,850

2,750

2,750

2,960

2,900

2,900

2,840

3.720 

2,780

1,740

1,600

2,810

2,980

3,050

3,390

5,560

3,640

76,600

2,471

-1,482

Jan.

5,620

5,600

5,500

3,570

3,540

5,700

5,550

5,560

5,500

5,410

5,470

5,500

5,450

5,750

5,600

5,500

5,400

5,700

5.900

5,500

3,160

5,550 

3,440

2,940

2,630

5,120

2,620

2.220

2,600

2,240

2,600

101,620

3,278

-2,270

Feb.

2,480

2,520

2,450

3,100

2,760

2,970

3,150

3,000

2,750

2,820

3,210

3,100

3,130

2,950

2,880

3,380

2,800

3,580

3,060

2,220

2,870

2,450 

1,350

2,550

3.640

2,000

1.230

1,320

-75,680

2,703

-2,141

Mar.

1.860

915

1,160

1,270

1,270

1,360

1,670

1,570

1,580

700

595

1,270

780

680

695

540

525

610

650

470

470

430 

480

500

600

790

710

730

810

615

720

26,625

859

+223

Apr.

760

840

640

520

620

570

550

760

940

850

800

1,120

990

975

865

995

1,010

1,020

785

870

1,980

2.480 

1,970

1,920

1,860

1,860

1,260

930

1,180

1,320

55,220

1,107

+5,395

May

1,210

890

960

740

575

1,090

1,070

1,290

1,080

1.440

710

555

1,370

1,420

*675

825

1,020

1,000

1,150

1,020

1,010

850 

770

785

680

845

1,420

855

615

505

1,180

29,585

954

+3,011

June

1,210

1,090

1,590

1,460

1,750

2,230

2,150

2,O4O

1,020

2,110

1,810

1,880

2,140

2,180

1,970

1,290

2,200

2,040

2,670

2,620

1,620

1,590 

670

1,860

5.560

1,680

1,890

1,650

1,290

1,450

54,510

1,810

-524

July

1,420

1,240

1,530

515

1,040

2,690

725

540

1,220

1,020

965

1,510

1,890

1,560

2,680

2,540

2,650

2,510

5.040

2,650

990

1,150 

1,420

1,440

1,080

1,040

975

1,010

1,510

1,840

1,780

47 , 550

1,555

-597

Aug.

920

750

660

1,590

1,180

965

450

2,070

,O2O

,450

,110

,800

,880

,750

,760

,180

,240

,4OO

,840

,460

,£50

,690 

,3QO

,290

,280

,990

,520

,470

.060

,680

,840

6 j825

,125

-857

Sept.

2,080

1,370

2.98O

2,940

1,750

1,600

1,520

1,850

1,760

1,920

2,180

2,060

2,270

1,150

1,710

2,220

2,510

2,020

2,200

1,840

1,620

1,220 

2,650

2,450

1,860

1,680

2,100

775

1.T50

2,090

57,285

1,909

-1,556

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

1,248 

0.795 

0.92

1,021 

0.650 

0.75

Calendar year 1956: 

Water year 1956-57:

989 

0.650 

0.73

1,008 

0.642 

0.74

562 

0.358 

0.37

1,082 

0.689 

0.79

4,502 

2.87 

5.20

3,965 

2.55 

2.92

Observed

Max 4,710 Mln 415 Mean 2,175 

Max 3,900 Min 325 Mean 1,859

1,486 

0.946 

1.06

936 

0.596 

0,69

1,286 

0.819 

0.94

553 

0.225 

0.25

Adjusted

Mean 2,565 Cfsm 1.51 In. 20.52 

Mean 1,541 Cfsm 0.98f In. 13.54

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Brassua and Moosehead Lakes and 

Second and First Roach, Indian, and Moxie Ponds.

Note. Stage-discharge relation affected by ice Jan. 1, 2, 12-20.
46 KENNEBEC RIVER BASIN

Dead River.near Dead River, Maine

Location. Lat 45°13'48", long 70 0 11'58", T. 3, R. 4, Somerset County, on right bank at 

foot of Long Falls, 0.3 mile upstream from Black Brook and 0.5 mile dpwnstream from 

Flagstaff Lake Dam.

Drainage area. 520 sq mi.

Records available. October 1939 to September 1957. October to December 1939 monthly discharge only, published in WSP 1301. ,

Gage.--Water-stage recorder. Datura of gage is 1,037.32 ft above mean sea level, datum of 

1929.

Average discharge. 18 years, 793 cfs (unadjusted).

Extremes. Maximum discharge during year, 5,320 cfs June 19 (gage height, 8.59 ft); minimum daily, 0.8 cfs June 17, 29, 30, July 2.

1939-57: 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 for periods of ice or backwater from pulpwood on control or no gage-height record, which are fair. Flow regulated by Flagstaff Lake (see 

p. 54).

Rating tables, water year 1956-57, except periods of ice effect and backwater from 

pulpwood (gage height, in feet, and discharge, in cubic feet per second)

Oct. 1 to June 19

3.37

3.4

3.5

3.6

3.7

3.8 

4.0

0.8

1.2

3.1

5.8

9.4

14

28

4.5 101

240

475

835

1,960

2,580

3.33

3.4

3.5

3.6

3.7 

3.9 

4.1

cubic feet

June 20 to

0.8

1.9

4.3

7.7

12

26

48

per second)

Sept . 30

4.3

4.5

5.0

5.5

6.0

7.0

7.1

78

120

285

550

942

2,230

2,400

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

121

128

130

*128

123

123

123

123

123

123

123

123

123

465

646

639

632

625

625

617

610

603

610

610

610

603

596

1,150

1.420

1,340

14,134

456

-151

Nov.

1,290

1,510

1,550

1,450

1,360

1,250

1,630

1,730

1,950

2,040

1,820

2,300

2.580

2,350

1,840

2,090

1,990

1,950

1,920

1,900

1,450

1,110

315

93

340

1,540

1,600

947

1,220

1,880

46,995

1,567

-1,228

Dec.

1,860

1,850

1,820

1,780

1,780

1,740

1,700

1,680

1,660

1,020

70

70

70

68

92

140

138

*138

138

138

138

138

138

138

138

138

136

136

136

136

136

19,460

628

-282

Jan.

136

136

136

136

136

132

132

132

132

132

132

132

132

132

132

132

*132

132

130

130

130

130

130

130

128

128

128

128

128

126

126

4,068

131

+167

Feb.

126

126

126

126

122

110

99

99

99

100

120

148

148

148

148

445

655

*645

645

640

640

565

530

525

525

148

27

675

-

8,510

304

-171

Mar.

1,990

1,960

810

1,110

1,440

1,660

1,640

1,590

1,160

415

720

1,320

1,480

1,480

1,480

1,480

1,460

930

1,010

1,370

1,320

*1,260

1,230

1,190

1,170

1,130

1,080

1,060

1,020

975

945

38,885

1,254

-931

Apr.

905

880

870

860

850

825

795

520

400

410

415

415

430

440

445

460

470

136

9.4

3.1

5.5

3.1

2.9

2.7

2.5

2.3

2.3

2.3

2.3

2 3

10,566.7

352

+1,461

May

2.1

1.

1.

1.

1.

1.

1.

1.

1.

2.

2.

1.

1. 3

1.

2.

*2.

1.

1.

1.

1.

1.

1.

1.

1 t is.

1.

1.

1.

1.

1.4

1.4

53.5

1.73

+1,170

June

1.4

1.6

1.7

200

1.2

1.1

1.6

38

120

86

1.2

182

1.2

.9

270

.9

.8

210

1.850

.9

300

128

.9

178

162

.9

160

178

.8

.8

4,079.9

136

+289

July

205

*.8

78 5~

2.3

810

1.4

300

160

148

.9

.9

200

1.5

1.5

1.5

1.5

220

2.1

200

2.3

215

625

765

 765

1,460

1,240

2,550

2, ZOO

1,330

1,550

1,620

17,144.7

553

-257

Aug.

1,630

1,840

1,970

1,590

1,660

1,970

1,620

1,130

180

555

106

106

335

452

446

205

245

544

700

560

770

1,200

1,200

520

152

152

152

152

 152

152

152

22,598

729

-604

Sept.

152

152

600

1,220

1,220

1,210

1,210

1,210

1,210

1,190

1,180

1,170

1,170

350

450

1,170

1,170

1,160

1,160

1,150

1,140

1,100

1,080

1,080

1,070

1,070

1,060

1,060

1,050

1,040

30,254

1,008

-769

Adjusted for change in contents in Flagstaff Lake

Mean 

Cfsm 

In.

305 

0.587 

0.68

339 

0.652 

0.73

346 

0.665 

0.77

298

0.573 

0.66

133 

0.256 

0.27

323 

0.621 

0.72

1,813 

3.49 

3.89

1,172 

2.25

2.59

Observed

Calendar year 1956: 

Water year 1956-57:

Max 3,870 Mln 0.8 Mean 704 

Max 2,580 Mln 0.8 Mean 594

425 

0.817 

0.91

296 

0.569

0.66

125 

0.240 

0.28

239 

0.460 

0.51

Adjusted

Mean 770 Of am 1.48 In. 20.17 

Mean 485 Cfsm 0.933 In. 12.67

* Discharge measurement made on this day

t Change In contents, equivalent i cubic feet per second, In Flagstaff Lake.
KENNEBEC RIVER BASIN 47

Dead River at The Forks, Maine

Location.--Lat 45°21'00", long 69°59'30", on left bank if- miles northwest of The Fcrks, 

Somerset County, and if miles upstream from mouth.

Drainage area. 872 sq ml.

Records available. September 1901 to August 1907, March 1910 to September 1957. 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 Sept. 29, 1923, staff gage at site 100 ft downstream at same datum.

Average discharge. 52 years (1902-7, 1910-57), 1,409 cfs (unadjusted).

Extremes. Maximum discharge during year, 4,790 cfs Apr. 22 (gage height, 4.60 ft); maximum gage height, 6.90 ft Mar. 1 (Ice jam); minimum dally discharge, 124 cfs Feb. 9.

1901-7, 1910-57: 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 periods of Ice effect or backwater from pulpwood on control, which are fair. Flow partly regulated by Flagstaff and Spencer Lakes 

(see p. 54).

Revisions (water years) . WSP 801: Drainage area. WSP 1231: 1913-15, 1916-17(M), 1919- 

20(M), 19S2(M).WSP 1301: 1904(M), 1907, 1911-12.

Rating table, water year 1956-57, except periods of ice effect or 

backwater from pulpwood on control (gage height, in feet, and 

discharge, in cubic feet per second)

1.6 

1.8 

2.0

2.4

87

190

326

713

3.0 

4.0

4.4

1,550

3,440

4,320

Discharge, in cubic feet per second, water year October 1956 to Septeniber 1957

Day

1

2 

3

4 

5

6

7

8

9

10

11

12

13

14

15

16

IT

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

(t)

Oct.

376

409 

418

*418 

401

359

4l8

798

737

605

513

456

409

401

534

965

952

939

926

887

874

848

874

1,100

1,130

1,030

952

939

1,180 

1.770

1,740

24,358

786

-176

Nov.

1,890

1,980 

2,120

1,960 

1,840

1,720

1,870

2,200

2,290

2,550

2,270

2,570

5.150

2,890

2,300

2,500

2,440

2,380

2,310

2,290

1,870

2,090

1,320

659

484

1,680

2,290

1,390

1,430

'

61,023

2,034

-1,216

Dec.

2,270

2,200 

2,230

2,180 

2.540

2,180

2,030

2,050

2,070

1,950

515

543

285

*250

220

240

270

270

260

260

255

255

255

250

250

250

250

250

240 

240

240

27,126

875

-289

Jan.

240

240 

235

235 

235

255

255

250

250

250

230

250

220

220

220

220

220

215

215

215

*210

205

240

510

560

430

455

400

360 

320

285

8,125

262

+167

Feb.

250

220 

210

184 

174

156

134

150

124

162

196

250

215

210

*205

255

785

775

775

785

785

735

690

700

715

715

605

855

-

11,975

428

-173

Mar.

2.270

2,230 

1,320

1,240 

1,720

1,910

1,860

1,790

1,800

900

900

1,640

1,790

1,750

1,750

1,750

1,750

*1, 570

1,210

1,700

1,650

1,600

1,570

1,570

1,520

1,450

1,420

1,390

1,360 

1,330

1, 260

48,970

1,580

-954

Apr.

1,240

1,260 

1,52O

1,280 

1,260

1,210

1,200

1,010

762

762

774

825

887

900

874

900

1,050

1,050

915

1,500

2,990

4.520

5,050

2,910

2,550

2,270

2,020

2,050

1,950

2,050

46,855

1,562

+1, 586

May

1.890

1,590 

1,110

965 

848

762

702

627

657

659

860

810

690

855

*900

1,500

1,240

885

700

660

775

775

660

595

545

475

465

585

750 

575

485

25,355

818

+1,249

June

400

370 

495

595 

495

465

485

495

555

485

410

300

535

285

270

290

300

390

"585 1.550

635

305

240

168

435

260

305

290

285 

190

12,448

415

+263

July

260

375 

915

585 

965

835

725

670

*535

505

205

146

174

140

555

585

285

505

230

215

174

630

850

895

1,500

1,530

2,320

2.450

2,030 

2 030 2 ',220

25,399

819

-319

Aug. Sept.

2,210 236

2.510 236 

2,290 525

2,050 1.280 

1,970 1,280

2,190 1,270

1,960 1,260

1,570 1,260

262 1,210

780 1,200

269 1,200

255 1,180

290 1,180

574 959

574 575

484 *1,160

242 1,180

544 1,180

659 1, 160

900 1, 140

555 1, 140

1,230 1,140

1,230 1,240

887 1,260

269! 1,230

255 1,170

255 1,160

25E 1,110

248 1,100

246 1,100 

242 - 

27,837 31,901

896 1,063

-623 -746

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

610 

0.700 

0.81

818 

0.938 

1.05

Calendar year 1956: 

Water year 1956-57:

586 

0.672 

0.77

429 

0.492 

0.57

255 

0.292 

0.30

646 

0.741 

0.85

3,148 

3.61 

4.03

Observed

Max 7,640 Mln 66 Mean 1,297 

Max 4,320 Mln 124 Mean 963

2,067 

2.37 

2.73

678 

0.778 

0.87

500 

0.573 

0.66

27f 

0.31f

o.se

317 

0.364 

0.41

Adjusted

Mean 1,365 Cfsm 1.57 In. 21.30 

Mean 862 Cfsm 0.989 In. 13.41

* Discharge measurement made on this day.

t Change In contents, equivalent in cubic feet per second, In Flagstaff and Spencer Lakes. 

Mote. Stage-discharge relation affected by ice Dec. 13 to Mar. 1, Mar. 4, 11. Backwater from 

pulpwood on control May 11 to July 21.
48 KENNEBEC RIVER BASIN

Austin Stream at Bingham, Maine

Location. Lat 45°03'55", long 69°52'55", on right bank at Bingham, Somerset County, threequarters of a mile upstream from mouth.

Drainage area. 91.1 sq mi.

Records available. October 1931 to September 1957.

Gage. Water-stage recorder. Datum of gage is 350.14 ft above mean sea level, datum of 

1929.

Average discharge. --2 6 years, 169 cfs.

Extremes . --Maximum discharge during year, 1,100 cfs Apr. 22 (gage height, 7.80 ft); minimum, 4.7 efs Aug. 24, 25.

1931-57: Maximum discharge, 5,820 cfs Sept. 17, 1932, Nov. 27, 1S50; maximum gage 

height, 17.63 ft Mar. 13, 1936 (backwater from ice jam); minimum discharge, 1.6 efs 

Sept. 30, Oct. 1, 1948.

Remarks . Records good except those for periods of ice effect or backwater from rocks on 

control, which are fair.

Revisions. VJSP 1171: Drainage area.

Rating table, water year 1956-57, except periods of loe effect or backwater 

from rocks on control (gage height, In feet, and discharge, In cubic 

feet per second)

5.1 4.7 6.2 142

5.2 7.8 6.4 204

5.3 12 6.7 324

5.4 18 7.O 48O

5.6 34 7.5 850

5.8 59 8.0 1,280

6.0 94

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

1.9

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

33

49

53

46

*40

34

56

116

94

69

53

43

35

34

34

33

30

29

26

24

24

22

27 

159

168

116

86

69

58

49

43

1,752

56.5

0.620

0.71

Nov.

38

34

33

33

32

30

28

26

25

24

21

24

29

31

*32

33

36

42

38

36

36

248

333 

2lT

132

114

101

90

77

69

2,036

67.9

0.745

0.83

Dec.

67

65

65

64

62

61

59

59

56

55

53

56

61

*67

62

59

70

69

59

52

45

43

42 

40

36

35

34

33

30

28

26

1,613

52.0

0.571

0.66

Jan.

24

24

22

19

18

16

13

12

12

11

11

9.9

9.5

9.1

8.6

8.2

8.2

8.2

8.2

8.2

8.2

*9.9

45

170

420

290

230

188

160

132

116

2,029.2

65.5

0.719

0.83

Feb.

102

90

81

72

67

55

45

36

30

24

20

18

*16

16

*16

16

14

14

14

14

13

13

13

13

13

12

22

130

-

989

35.3

0.387

0.40

Calendar year 1956 : Max 1.73O Min 1O

Mar.

94

70

59

52

45

41

36

34

59

132

211

244

215

184

137

114

107

*101

116

92

79

86

107 

114

119

107

119

124

116

114

101

3,329

107

1.17

1.35

Apr.

109

142

168

142

132

126

162

154

142

124

126

134

174

178

156

154

211

272

324

451

698

1,010

818 

730

615

519

451

428

412

401

9,663

322

3.53

3.94

May

342

284

240

211

184

162

142

124

114

114

162

154

134

119

*181

320

248

184

142

142

218

191

148 

151

98

84

90

98

96

83

70

5,030

162

1.78

2.05

June

59

61

77

69

58

46

61

86

69

55

44

38

35

33

31

28

24

24

36

156

120

70

51 

48

36

53

88

83

81

110

1,830

61.0

0.670

0.75

July

88

100

94

75

*72

83

70

96

*73

72

55

43

32

29

51

69

55

46

34

27

18

27

33

27

*28

22

19

17

21

13

24T

1,734

55.9

0.614

0.71

Aug.

198

120

77

81

79

53

36

30

23

22

31

37

35

30

20

17

12

11

11

8.6

7.5

6.6

6.2 

5.3

5.0

8.6

13

12

9.9

8.2

*7.8

1,021.7

33.0

0.362

0.42

Sept.

8.2

6.6

 14

22

20

16

14

12

9.9

9.1

9.5

9.5

9.9

10

9.9

*12

9.5

6.9

7.2

6.2

6.6

6.9

52 

77

53

40

30

24

19

12

542.9

18.1

0.199

0.22

Mean 152 Cfsm 1.67 Ir . 22.77

Water year 1956-57 : Max 1,010 Mln 5.0 Mean 86.5 Cfsm 0.950 Ir . 12.87

Peak discharge (base, 1,200 cfs). Ho peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Dec. 1-5, Dec. 10 to Mar. 7, and backwater from 

rocks on control June 18 to Sept. 3O.
KENNEBEC RIVER BASIN 49

Kenrtebec River at Bingham, Maine

Location.--Lat 45°03'05", long 69°53'15", on right bank at Bingham, Somerset County, 

200 ft downstream from highway bridge, half a mile downstream from Austin Stream, and 

1-f miles downstream from Wyman Dam.

Drainage area. 2,710 sq mi, approximately.

Records available . June 1907 to June 1910, October 1930 to September 1957.

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.--29 years (1907-9, 1930-57), 4,229 cfs (unadjusted).

Extremes. Maximum discharge during year, 11,000 cfs Apr. 22 (gage height, 8.73 ft); tninimum dally, 1,330 cfs May 4.

1907-10, 1930-57: 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 flow at 

Wyman Dam plus inflow; minimum dally, 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). WSF 1271: 1951(M). WSP1301: 1936(M).

Rating table, water year 1956-57 (gage height, in feet, 

and discharge, In cubic feet per second)

5.6 

6.0 

6.5 

7.0

1,200

1,910

2,980

4,310

5,930

7,790

9,100

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

3,320

3,330

3,370

*3,390

3,470

3,280

3,410 

3,140

3,180

3,220

3,310

3,330

3,320 

3,100

3,320

3,410

3,220

3,460

3,510

3,400

3,340

3.620

3,320

3,110

2.900

3,160

3,100 

3,190

3,260

3,320

3,360

102,170

3,296

-1,276

Nov.

3,220

3,350

3,350

3,000

3,500

3,420

3,300 

3,310

3,350

3,480

3,380

3,250

5.580 

3,350

 3,490

3,420

3,230

3,520

3,560

3,440

3,490

3,160

2,840

2.740

3,100

3,220

3,530 

3,460

3,400

3,400

99,840

3,328

-1,437

Dec.

3,710

3,320

3,480

3,590

3,550

3,720

3,520 

3,710

3,100

3,540

3,660

3,420

3,660 

3,530

3,400

3,290

3,630

3,560

3,300

3,620

3,330

3,590

3,280

2,480

2.070

3,540

3,700 

3,750

3,660

3,270

3.790

106,770

3,444

-1,764

Jan.

3,320

3,750

3,640

3,600

3,740

3,380

3,520 

3,800

3,620

3,700

3,650

3,510

3,440 

5.820

3,770

3,340

3,390

3,310

3,480

3,400

5,290

5,380

3,200

3,270

3,250

3,050

5.020 

3,120

3,060

3,260

3,140

106,220

3,426

-2,069

Feb.

3,330

3,410

3,110

3,340

3,300

3,240

3,220 

3,320

3,150

3,200

3,450

3,230

5.470 

2,970

3,180

3,140

3,410

3,200

3,220

3,300

3,320

3,170

3,040

3,300

3,130

2.940

3,010 

3,270

_

90,370

3,228

-2,360

Mar.

3,120

3,050

2,900

3,OOO

3,030

3,040

5.240 

2,930

2,930

2,630

2,800

2,560

2,350 

2,480

2,760

2,360

2,290

2,440

2,350

2,500

2,350

2,410

2,200

2,040

2,220

2,400

2,130 

2,140

2,120

1.870

0 OQfl C. , £OU

78, 920

2,546

-700

Apr.

2,370

2,210

1,940

1,990

2,280

2,010

1.440 

2,010

1,920

2,280

2,180

2,200

2,100 

1,780

2,260

1,910

2,000

1,980

2,500

2,780

5,180

8.870

8,400

5,250

6,520

6,020

5,060 

2,010

3,000

4,420

96,870

3,229

+5,057

May

4.100

3,100

2,960

1.550

1,720

2,740

2,130 

1,960

2,200

2,060

2,160

1,950

1,870 

2,130

2,060

*3,200

2,950

2,690

2,000

2,300

2,270

2,100

2,270

1,910

1,960

2,060

2,390 

2,260

2,180

2,170

2,260

71,440

2,305

+4,144

June

2,270

2,200

2.600

2,270

2,590

2,400

2,390 

2,140

2,370

2,540

2,520

2,490

2,420 

2,490

2,520

2,470

2,550

2,500

2,420

2,450

2,400

2,360

2,350

 2,470

2,560

2,430

2,360 

2,430

2,160

1.770

71,890

2,396

-7

July

2,120

2,120

1,720

1,540

1,950

2,220

2,310 

2,450

2,470

2,440

2,480

2,520

2,470 

2,290

2,820

2,670

2,710

2,760

2,830

2,540

2,020

2,740

2,780

2,760

2,780

2,740

2,610 

2,210

3.260

3,250

3, ZOO

77,780

2,509

-938

Aug.

3,020

3,230

2,340

2,220

3,250

3,370

3,360 

2,980

3,160

2,400

2,420

3,330

3,040 

3,300

3,320

3,480

3,150

2,260

3,480

3,620

3,500

3,420

3,620

3,200

2.000

3,570

3,250 

3,140

3,130

3,180

2,820

95,560

3,083

-1,453

Sept.

1.600

2,320

3,320

3,360

3,270

3,430

2,800 

2,280

3,260

3,210

3,380

2,990

2,770 

2,800

2,100

3.470

3,070

3,150

3,010

3,200

2,940

2,100

3,370

3,300

3,360

3,280

3,370 

2,850

2,060

3,450

88,850

2,962

-2,336

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

2,020 

0.745 

0.86

1,891 

0.698 

0.78

Calendar year 1956: 

Water year 1956-57:

1,680 

0.620 

0.71

1,357 

0.501 

0.58

868 

0.320 

0.33

1,846 

0.681 

0.79

8,286 

3.06 

3.41

6,449 

2.38 

2.74

Observed

Max 13,900 Min 1,970 Mean 3,754 

Max 8,870 Mln 1,330 Mean 2,977

2,389 

0.882 

0.98

1,571 

0.580 

0.67

1,630 

0.601 

0.69

626 

0.231 

0.26

Adjusted

Mean 4,013 Cfsm 1.48 In. 20.15 

Mean 2,557 Cfsm 0.944 In. 12.80

* Discharge measurement made on this day.

t Change In contents, equivalent in cubic feet per second, in Brassua, Moosehead, Flagstaff and 

Spencer Lakes, and Second and First Roach, Indian, Moxie, and Wyman Ponds.
50 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 1957.

Gage. Water-stage recorder. Datum of gage is 303.3 ft above mean sea level, datum of 

1929. Nov. 1, 1901, to May 5, 1907, chain and rod gages 1 mile upstream at different 

datum.

Average discharge. 36 years (1902-6, 1925-57), 683 cfs.

Extremes. Maximum discharge during year, 5,460 cfs Apr. 21 (gage height, 8.62 ft); minimum, 32 cfs Sept. 18 (gage height, 2.32 ft).

1925-57: Maximum discharge, 30,800 cfs Mar. 19, 1956 (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, whic^ are fair. Some 

regulation at low flow by mills above station.

Revisions (water years). WSP 851: Drainage area. WSP 1231: 1904-7, 1928(M), 1932(M), 

1936(M), 1938(M), 1944(M), 1950(M).

Rating table, water year 1956-57, exeept_period of Ice effect (gage 

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

2.4 

2.6 

2.8 

3.1 

3.5

40

61

90

150

265

4.0 

5.0 

6.0 

7.4

460

1,070

2,020

3,750

Discharge, In cubic feet per second, water year October 1956 to Sept-amber 1957

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.

150

155

155

155

*143

120

285

950

541

398

331

279

245

231

222

204

193

179

167

152

146

143

162

815 

625

447

374

331

301

269

248

9,116

294

0.831

0.96

Nov.

238

£31

210

204

196

182

177

174

164

155

139

Tso

167

174

169

164

167

179

164

157

177

890

188

568 

414

366

378

386

362

324

8,314

277

O.782

0.87

Dec.

285

275

265

260

255

240

235

27O

295

260

260

27O

310

285

265

280

*355

310

270

265

250

215

210

200 

190

180

174

174

170

170

168

7,611

246

0.695

0.80

Jan.

164

162

158

158

156

152

152

150

150

146

142

140

140

132

130

128

"126

124

120

122

138

152

20O

460 

370

325

300

270

255

235

215

5,772

186

0.525

0.61

Feb.

198

182

172

160

156

146

140

136

130

128

128

126

126

124

122

122

120

*122

120

118

116

118

116

1U 

116

118

140

230

-

3,844

137

O.387

0.40

Calendar year 1956: Max 5,740 Mln 65

Mar.

340

280

260

230

205

198

182

180

265

615

780

7O5

645

600

615

655

720

630

545

505

470

*425

545

630 

615

591

655

667

613

574

510

15,450

498

1.41

1.63

Apr.

521

685

847

655

679

867

793

643

607

510

563

568

799

781

655

631

835

944

1,080

1,500

3,410

3.650

2,430

2,260 

1,780

1,740

1,140

1,240

1,O90

1 ' 200

35,083

1,169

3.30

3.68

May

993

823

703

637

574

526

487

456

452

447

739

625

515

510

770

*1.44O

930

727

602

631

1,440

1,020

775

643 

526

456

426

469

439

378

559

20,498

661

1.87

2.16

June

301

290

358

320

276

241

276

355

279

231

204

185

179

169

155

148

135

124

157

355

245

172

143

179 

193

265

386

290

248

455

7,294

243

0.686

0.77

July

324

*287

272

231

231

347

265

207

190

190

174

155

126

128

201

174

146

126

110

88

80

108

150

132 

132

122

94

88

110

355

320

5,663

183

0.517

0.60

Aug.

316

204

152

132

128

110

99

94

88

87

128

150

132

108

94

92

73

69

74

73

71

69

69

54 

11

61

69

74

*66

57

49

3,089

99.6

0.281

0.32

Sept.

49

48

57

74

85

65

58

57

57

50

49

48

50

48

52

56

53

51

51

49

ii

51

74

188 

H2

82

66

57

58

58

1,897

63.2

0.179

0.20

Mean 579 Cfsm 1.64 IT. 22.28

Water year 1956-57: Max 3,63O Mln 44 Mean 339 Cfsm 0.958 IT. 13.00

Peak discharge (base, 6,OOO efs). No peak above base.

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Dec. 1 to Mar. 25.
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 Beg Stream, 

3 miles north of Mercer, Somerset County, and 9j miles upstream from mouth.

Drainage area. 514 sq ml.

Records available.--October 1928 to September 1957.

Gage. Water-stage recorder. Datum of gage Is 197.1 ft above mean sea level, datum of 

1929.

Average discharge. 29 years, 914 cfs.

Extremes.--Maximum discharge during year, 5,180 cfs Apr. 22 (gage height, 7.12 ft); minimum, 55 cfs Sept. 30 (gage height, 2.45 ft).

1928-57: 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 Blngham and Waterville, Carrabassett River near North Anson, and Sebrstlcook 

River near Plttsfleld; 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 1956-57, except periods of Ice effect (gage 

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

2.4

2.5 

2.8 

3.0 

3.5

49

61

111

160

352

4.0 

4.5 

5.0 

6.0 

6.8

650 

1,040 

1,540 

2.96O 

4,490

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

210 

203

203

193

190

169

169

875

728

479

357

300 

264

242

223

220

216

200

190

184

172

IBS" 160 

840

1.070

664

514

427

373 

342

318

10,861

350

0.681

0.79

Nov.

309 

333

338

3OO

269

253

245

245

238

223

213

200 

26O

318

318

304

304

300

295

260

264

1,380 

1,780 

966

637

564

535

500

460 

440

13,065

436

0.848

0.95

Dec.

410 

390

380

370

363

400

427

461

520

490

444

533 

699

657

564

533

664

*750 '533

496

552

520 

422 

400

355

340

325

315

310 

305

305

14,233

459

0.893

J..03

Jan.

300 

295

29O

280

270

270

265

260

260

260

260

265 

260

255

245

245

245

250

245

225

220

220 

330 

*680

795

690

595

560

515 

480

460

10,790

348

0.677

0.78

Feb.

435 

405

40O

375

350

340

325

305

300

290

280

270 

E65

265

260

260

255

255

*255

245

240

235 

235 

235

235

235

250

350

-

8,150

291

0.566

0.59

Mar.

630 

610

46O

365

335

305

290

295

405

760

970

795 

650

610

680

770

925

890

865

820

*790

865 

980 

1.170

. 1,120

1,070

1,060

1,030

990 

955

940

23,400

755

1.47

1.70

Apr.

947 

1,160

1,520

1,200

1,060

1,030

1,540

1,560

1,390

1,170

1,210

1,150 

1,450

1,500

1,220

1,120

1,220

1,400

1,540

2,030

2,770

4.590 

2,690 

2,300

1,960

1,69O

1,450

1,420

1,330

1,250

47,667

1,589

3.09

3.45

May

1,280 

1,010

875

788

699

637

590

539

496

473

616

795 

616

720

964

2,100

*1,320

972

795

803

2.260

1,620 

1,140 

923

758

63'7

570

637

657 

552

467

27,309

881

1.71

1.97

June

439 

405

473

502

411

368

352

439

394

323

273

249 

223

223

213

187

166

157

190

450

411

295 

223 

203

230

394

637

539

444 

577

10,390

346

0.673

0.75

July

526 

378

*363

333

314

373

400

295

256

264

264

245 

203

175

152

150

166

152

139

127

111

120 

144 

230

193

172

160

144

127 

200

444

7,320

236

0.459

0.53

Aug.

338 

2lg

230

193

166

150

134

122

113

120

160

264 

2D6

223

175

152

132

113

100

92

90

90 

84 

78

76

76

74

66

72

74 

*70

4,408

142

0.276

0.32

Sept.

67 

62

66

64

67

86

86

87

74

64

61

61 

64

62

61

-61 57

73

90

79

67

62 

60 

66

155

129

94

76

64

59

2,224

74.1

0.144

0.16

Calendar year 1956: Max 6,580 Min 74 Mean 817 Cfsm 1.59 In. 21.65

Water year 1956-57: Max 4,390 Min 57 Mean 493 Cfsm 0.959 In. 13.02

Peak discharge (base, 6,000 cfs). No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 27 to Dec. 4, Dec. 25 to Mar. 31.
52 KENNEBEC RIVER BASIN

Sebasticook River near Pittsfield, Maine

Location. Lat 44°42'55", long 69°24'55", on right bank 1^ miles upstrean from Twentyfivemile Stream and 4 miles south of Pittsfield, Somerset County.

Drainage area. 579 sq mi.

Records available.--October 1928 to September 1957.

Gage. Water-stage recorder. Datum of gage is 133.9 ft above mean sea level, datum of 

1929.

Average discharge. 28 years (1929-57), 920 cfs.

Extremes. Maximum discharge during year, 1,980 cfs Apr. 13 (gage height, 4.73 ft); minimum daily, 4.5 cfs Nov. 10.

1928-57: Maximum discharge, 14,400 cfs Mar. 22, 1936 (gage height, 13.18 ft); minimum, 2.9 cfs Dec. 30, 1941 (gage height, 0.40 ft); minimum daily, that of Nov. 10, 1956.

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

record, 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 tables, water year 1956-57, except period of Ice effect (gage 

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

Oct. 1 to Apr. 12 Apr. 13 to Sept. 30

1.0 

1.2 

1.4 

1.6 

1.8

3.0

10

21

35

60

2.0 

2.2 

2.4 

2.6 

3.0

100

155

225

305

500

Note. Same as following 

table above 3.0 ft.

0.7 

.9 

1.2 

1.4 

1.6 

1.8

4.6

10

25

42

65

95

2.0 

2.5 

3.0 

3.5

4.0 

4.8

134

279

500

850

1,300

2,050

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

154

146

*66

130

192

5.7

6.4

320

188

156

200

205

4.8

6.8

230

230

200

192

305

5.1

5.7

265

240

355

365

375

6.4

11

440

285

158

5,448.9

176

-

-

Nov.

390

285

5.4

108

275

275

265

255

325

iil

5.7

380

365

255

400

400

275

9.2

420

375

425

425

725

865

890

915

955

865

725

650

12,512.8

417

-

-

Dec.

575

540

505

465

445

445

425

425

265

425

400

430

565

685

680

655

640

645

530

580

540

495

470

440

430

430

440

410

400

2 6O

450

15,090

487

_

-

Jan.

320

425

480

470

215

15

475

325

305

295

465

310

10

260

182

220

196

215

425

10

470

425

400

785

1.020

975

990

890

800

880

14,073

454

-

Feb.

740

655

545

530

460

435

350

430

435

128

*425

47O

460

460

420

220

7.2

460

430

420

240

335

380

13

420

400

390

305

_

LO, 963.2

392

_

-

Mar.

310

380

435~ 8.4

395

390

122

400

405

745

990

1,080

1,090

1,140

1,180

1,220

1,280

1,330

1,340

1,320

1,290

1,380

1,330

1.590

1,390

1,390

1,390

1,380

1,340

1, 290

1,220

30,350.4

979

.

-

Apr.

1.180

1,200

1,310

1,450

1,450

1,460

1,600

1,780

1,890

1,860

1J900

1,950

1,960

1,940

1,900

1,840

1,740

1,650

1,530

1,440

1,390

1,430

1,450

1,470

1,420

1,380

1,340

1,300

1,260

1,220

46,690

1,556

-

-

May

1.190

1,150

1,070

940

787

769

680

579

475

585

395

415

*395

420

425

525

688

667

634

634

674

814

841

778

712

660

634

622

609

533

402

20,502

661

-

-

June

128

120

435

405

380

380

240

16

150

390

270

265

265

305

16

18

410

260

102

215

206

143

128

132

87

93

172

170

148

156

6,205

207

-

-

July

182

170

160

126

140

108

148

200

162

144

*158

122

75

117

192

132

230

170

152

31

170

290

T50

148

143

139

134

132

15

148

178

4,566

147

-

-

Aug.

205

184

196

120

158

184

24

8.1

184

9.1

10

240

87

162

112

190

112

7.2

245

142

138

106

140

"679 6.9

265

T38

138

198

235

6.9

3,958.1

128

-

-

Sept.

6.9

114

255

87

168

220

6.9

6.9

270

126

134

39

230

6.9

6.9

215

144

114

90

240

6.9

6.9

"31 280

57

110

250

5*5

6.0

80

3,313.8

110

-

-

Calendar year 1956: Max 6,190 Mln 4.5 Meanl 781 Cfsra 1.35 In. 18.41

Water year 1956-57: Max 1,960 Mln 4.5 Mean 476 Cfsra 0.822 In. 11.13

* Discharge measurement made on this day.

Note. No gage-height record Nov. 19 to Dec. 11; discharge estimated on basis of records of hydroelectric plant just upstream. Stage-discharge relation affected by Ice Jan. 5-2*.
KENHEBEC RIVER BASIN 

Cobbosseecontee Stream at Gardiner, Maine

53

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.

Drainage area. 217 sq mi.

Records available. June 1890 to September 1957.

Gage. --Staff gage in pond above dam and in tailrace of power-plant. Datum of gage is about 

at mean sea level.

Average discharge. 67 years, 328 cfs.

Extremes.--Maximum daily discharge during year, 305 cfs Apr. 17; minimum daily, 10 cfs 

Nov. 23, Dec. 26, May 30, July 1-7, Sept. 2,3.

1890-1957: Maximum discharge, 5,020 cfs Mar. 21, 1936 (elevation, 139.4 ft above 

mean sea level); maximum dally, 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 1956 to September 1957

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.

255

260

260

265

275

275

260

250

250

245

245

245

235

230

240

235

225

220

220

230

220

235

235

240

255

255

260

255

255

240

230

7,600

245

_

-

Nov.

225

225

220

220

215

215

200

205

215

215

220

220

215

220

220

220

215

215

215

215

215

210

10

215

210

205

210

210

205

210

6,230

208

_

-

Dec.

205

210

205

205

210

205

205

205

205

215

215

205

210

215

210

210

220

215

220

215

225

225

225

225

230

10

225

230

250

260

260

6,570

212

--

Jan.

255

260

255

250

260

265

270

270

275

275

270

265

260

265

260

260

255

255

255

255

240

235

235

255

275

265

270

255

280

275

270

8,090

261

_

-

Feb.

"265 270

260

£65

265

270

255

265

265

265

265

265

265

270

265

260

260

265

270

270

270

270

270

250

245

240

245

245

_

7,335

262

_

-

Mar.

255

260

260

265

265

260

255

245

245

260

260

265

250

255

255

260

255

255

260

235

240

240

235

255

260

260

255

255

255

250

255

7,880

254

_

-

Apr.

250

250

245

255

260

255

260

260

265

270

265

270

260

295

290

300

'285 305

285

280

275

265

270

270

265

260

265

265

265

260

8,065

269

_

-

May

265

265

255

250

225

255

255

255

255

255

250

255

255

250

250

245

250

250

250

250

245

245

250

250

250

255

250

250

255

240

10

7,540

243

_

-

June

250

245

245

245

245

245

245

245

245

235

235

240

240

240

240

240

240

240

24O

240

230

230

235

230

225

225

225

220

220

205

7,085

236

_

-

July

10

To

10

10

10

10

10

210

205

210

205

205

205

205

205

210

215

225

205

205

200

200

205

195

195

195

195

195

195

190

185

4,930

159

_

-

Aug.

185

190

180

175

175

175

170

175

175

175

180

180

190

190

185

180

185

190

185

180

180

185

185

185

190

185

190

185

185

180

185

5,655

182

_-

Sept.

185

10

To

200

200

195

195

195

195

195

195

195

195

195

195

200

195

195

190

195

195

195

200

195

200

195

195

200

195

200

5,500

183

_

-

Calendar year 1956: Max 305 Min 10 Mean 245 Cfam - In. -

Water year 1956-57: Max 305 Min 10 Mean 226 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 pow>3r, 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, ha§ 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 no-rial 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 Maine Power Co.

Moxie Pond on Moxie Stream, 4-| miles east of The Forks, 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 Black 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 Kenneb3c 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, completed 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 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 1956 to September 1957

Sept, 

Oct. 

Nov. 

Dec. 

Jan. 

Feb. 

Mar. 

'Apr. 

May 

June 

July 

Aug. 

Sept.

Date

31...............

.30...............

Brassua 

Lake

. .... 8,560

. . . . . 38

, .... 7,290

. . . . . O

Second 

Roach 

Pond

6.7 

11 

43 

45.2 

45.2 

33.5 

0 

11 

0 

0 

0 

0 

22.2

First 

Roach 

Pond

801 

664 

691 

664 

530 

302 

66 

463 

801 

732 

691 

760 

664

Indian 

Pond

3, 

3, 

3, 

3, 

3, 

3, 

3, 

3, 

3, 

3, 

3, 

3, 

3,

258 

168 

186 

150 

168 

186 

186 

168 

222 

222 

240 

150 

258

Moxie

Pond

130 

60 

60 

30 

18 

12 

0 

604 

685 

640 

640 

622 

703

Flagstaff 

Lake

7, 

7, 

3, 

3, 

3, 

3,

4, 

7, 

8, 

7, 

5, 

4,

43* 

023 

845 

093 

533 

125 

63? 

423 

55* 

30? 

615 

993

003

Spencer 

Lake

103 

38.4 

70.4 

51.2 

51.2 

44.8 

38.4 

360 

570 

503 

337 

285 

345

Wyman 

Pond

8,750 

8,830 

8,760 

8,780 

8,870 

8,760 

8,790 

8,990 

8,680 

8,820 

8,760 

8,780 

8,690

Kote. Wyman Pond contents at 12 p.m. on clay shown. All others at 7 a.m. of first day of following month.
ANDROSCOGGIN RIVER BASIN 

Diamond River near Wentworth Location, N. H.

55

Location. Lat 44°52'40", long 71°03'25", on left bank 0.7 mile upstream from mouth and 

li miles north of Wentworth Location, Coos County.

Drainage area. 153 sq mi.

Records available. July 1941 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 1,275 ft (from topographic map).

Average discharge. 16 years, 341 cfs.

Extremes. Maximum discharge during year, 4,180 cfs Apr. 21 (gage height, 8.00 ft); minimum, 24 cfs Sept. 2, 3 Tgage height, 1.35 ft).

1941-57: 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, Sep*;. 1, 

1952 (gage height, 0.81 ft).

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

Rating table, water year 1956-57, except period of ice effect (gage 

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

1.3 

1.5 

1.7 

2.0 

2.5 

3.0

185

320

4.0 

5.0 

6.0 

7.0 

7.3

705

1,270

2,010

3,000

3,330

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

400

342

274

224

159

126

270

457

*274

197

171

143 

131

122

118

106

106

100

90

86

81

79

77

88

86

86

86

80

76 

74

12

4,779

154

1.01

1.16

Nov.

86

102

84

75

68

65

64

63

61

60

50

62 

82

89

88

122

247

180

*96

98

128

1.2BO

622

283

178

146

130

116

104 

98

4,927

164

1.07

1.19

Dec.

95

92

90

89

89

88

90

 255 295

215

200

200 

172

160

150

158

172

152

136

*148

136

120

114

108

108

106

104

102

100 

98

95

4,237

137

0.895

1.03

Jan.

94

90

88

85

84

82

81

79

77

76

75

72 

71

69

66

62

61

58

56

54

53

Sf

455

*860

570

440

380

350

315 

270

240

5,470

176

1.15

1.33

Feb.

220

198

178

160

152

150

140

130

120

118

112

100 

89

84

80

76

74

72

71

*70

69

68

66

65

64

71

108

575

-

3,480

124

0.810

0.84

Mar.

520

420

350

290

255

220

188

168

162

220

215

166 

146

142

150

186

215

186

158

132

126

122

124

126

120

122" 118

130

140

140

140

5,897

190

1.24

1.43

Apr.

146

190

350

265

230

230

265

230

200

182

186

205 

235

200

176

180

220

320

575

1,240

5.520

3,220

2,140

2,180

1,690

1,270

1,360

1,410

1,010

1,330

24,755

825

5.39

6.01

May

815

584

480

402

388

355

311

*289

280

320

620

388 

326

311

990

1,090

568

413

339

585

1,020

564

420

365

301

257

314

342

323 

250

254

14,244

459

3.00

3.46

June

199

216

295

207

166

141

229

247

171

131

112

102 

102

89

80

70

60

3'90 54

375

178

110

82

77

92

252

214

242

244

232

5,159

172

1.12

1.25

July

410

660

345

570

*740

674

362

272

209

195

180

157 

128

107

215

192

175

118

89

75

65

690

865 3"S~6

226

168

137

115

162 

550

260

9,437

304

1.99

2.29

Aug.

185

137

124

128

100

86

76

68

63

75

148

204 

130

90

75

64

60

53

49

43

40

36

35

33

30

32

36

35

32

29

28

2,324

75.0

0.490

0.56

Sept.

27

25

41

82

48

37

35

34

30

27

*26

27 

30

33

37

33

122

75

47

37

42

47

310

235

118

82

66

58

52 

54

1,917

63.9

0.418

0.47

Calendar year 1956s Max 4,020 Mln 22 Mean 281 Cfsm 1.84 In. 24.96

Water year 1956-57: Max 3,320 Mln 25 Mean 237 Cfsm 1.55 In. 21.02

Peak discharge (base, 5,600 cfs). Apr. 21 (9 to 10 p.m.) 4,180 cfs (8.00 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 25 to Apr. 20.
56 ANDROSCOGGIN RIVER BASIN

Androscoggin River at Errol, N. H.

Location. Lat 44°46'55", long 71°07'45", 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 mi.

Records available. January 1905 to September 1957 (monthly discharge only, October 1922 

to November 1943 in WSP 1301). Published as "at Errol Dam" prior to 1922.

Gage. Water-stage recorder. Datum of gage is 1,227.30 ft above mean sea level, datum of 

T929. Prior to Dec. 8, 1943, movable rod gage at Errol Dam at datum 5.0 ft higher.

Average discharge. 52 years, 1,873 cfs (adjusted).

Extremes.--Maximum discharge during year, 2,010 cfs Aug. 20 (gage height, 2.79 ft); minimum daily, 250 cfs Apr. 21-24.

1905-57: Maximum daily discharge, 15,700 cfs June 18, 1943; minimum daily, leakage 

only at various times when gates in dam were closed.

Instantaneous maximum not available prior to Dec. 9, 1943.

Remarks.--Records excellent except those for period of backwater from pulpwood, which are 

good. Plow regulated by Kennebago, Rangeley, Mooselookmaguntic, Richardson, Umbagog, 

and Aziscohos Lakes (see p. 64).

Cooperation. Records prior to Dec. 9, 1943, furnished by Union Water Power Co. 

Revisions. WSP 1001: Drainage area.

Rating table, water year 1956-57, except period of backwater from pulpwood (gage 

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

0.4

.8

1.4

228

389

716

2.0 

2.5 

2.7

1,200 

1,760 

2,p20

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

(f)

Oct.

1,550

1,520

1,560 

1,570

1,620

1,670

1,480

1.410

TJlTO"

1,520

1,610 

1,640

1,700

1,700

1,700

1,720

1,750

1,720

1,730

1,750

1,750 

1,750

1,720 

1,580

1,700

1,710

1,700

1,680

1,710 

1,750

1,750

51,190

1,651

-965

Nov.

1,680

1,630

1,570 

1,560

1,610

1,630

1,660

1,670

1,670

1,670

1,710 

1,710

1,660

1,620

1,620

1,610

1,580

1,550

1,570

1,610

1,530 

1,170

1.120 

1,490

1,490

1,480

1,460

1,440

1,520 

1,520

46,810

1,560

-677

Dec.

1,510

1,520

1,500 

1,500

1,620

1,590

1,470

1,330

1,200

1,340

1,430 

1,330

1,310

1,310

1,410

1,350

1,290

1,420

1,510

1,440

1,430 

1,430

1,480 

1,480

1,490

1,530

1,580

1,580

1,480 

1,570

45,140

1,456

-637

Jan.

1.670

1,640

1,670 

1,640

1,580

1,590

1,610

1,560

1,570

1,560

1,580 

1,580

1,570

1,610

1,630

1,640

1,630

1,610

1,610

1,620

1,590 

1,390

1.120 

1,390

1,380

1,360

1,340

1,340

1,350

1,370 

1,420

47,220

1,523

-857

Feb.

1,430

1,440

1,470 

1,480

1,480

1,520

1,530

1,550

1,550

1,550

1,550 

1,580

1,590

1,590

1,580

1,570

1,580

1,610

1,610

1,580

1,570 

1,590

1,590 

1,610

1,810

1,770

1,500

1,410

-

43,690

1,560

-946

Mar.

1,320

1,330

1,370 

1,430

1,480

1,490

1,520

1.560

1,470

1,350

1,410 

1,420

1,430

1,360

1,310

1,180

1.080

1,170

1,280

1,310

1,310 

1,330

1,260 

1,230

1,250

1,320

1,290

1,220

1,190

1 ,260 

1,270

41,200

1,329

-446

Apr.

1,260

970

823 

910

1,030

1,030

900

1,050

1,040

1,070

1,080 

1,020

892

932

1,000

1,000

956

845

705

470

250 

250

250 

250

610

925

1,060

600

1,070

1,440

25,688

856

+3,640

May

1,300

1,300

'1,200 

996

1,130

1,330

1,280

*1,120

1,210

1,150

948 

980

1,020

1,150

710

705 956"

964

964

1,620

1.850 

1.81O

1,330 

1,140

1,060

1,070

1,300

1,200

1,060

1 >200 

1,190

36,243

1,169

+2,287

June

1,260

1,200

1.170 

1,200

1,300

1,410

1,340

1,230

1,310

1,370

1,430 

1,460

1,440

1,430

1,490

1,510

1,520

1,520

1,470

1,350

1,470 

1,590

1.610 

1,360

1,190

1,220

1,200

1,280

1,360

1,310

41,000

1,367

-302

July

1,340

1,500

1,470 

*1,280

1.010

1,010

1,280

1,580

1,630

1,550

1,520 

1,580

1,560

1,630

1,670

1,620

1,620

1,730

1^790

1,760

1,700 

1,240

1,070 

1,390

1,410

1,470

1,520

1,480

1,330

1 040

45,270

1,460

+250

Aug.

1.680

1,720

1,760 

1,730

1,760

1,800

1,860

1,880

1,880

1,860

1,750 

1,700

1,820

1,850

1,880

1,840

1,840

1,860

1,890

1,880

1,850 

1,880

1.920 

1,900

1,890

1,850

1,810

1,840

1,850

1,820 

1,820

56,670

1,828

-1,184

Sept.

1,840

1,900

1,770 

1,820

1,860

1,890

1,890

1,890

1,900

1,900

1.950 

1,930

1,950

1,880

1,860

1,860

1,820

1,880

1,880

1,880

1,890 

1,880

1.620 

1,620

1,750

1,760

1,890

1,920

1,900

1,850

55,590

1,853

-1,390

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

686 

0.656 

0.76

883 

0.845 

0.94

Calendar year 1956: 

Water year 1956-57:

819 

0.784 

0.90

666 

0.637 

0.73

614 

0.588 

0.61

883 

0.845 

0.97

4,496 

4.30 

4.80

3,456 

3.31 

3.82

Observed

Max 5,410 Min 410 Mean 1,686 

Max 1,930 Min 250 Mean 1,468

1,065 

1.02 

1.14

1,710 

1.64 

1.89

644 

0.616 

0.71

463 

0.443 

0.49

AdJ is ted

Mean 1,788 CfsTi 1.71 In. 23.27 

Mean 1,368 Cfsm 1.31 In. 17.76

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Kennebago, Rangeley, Mooselookmeguntic, Richardson, ISnbagog, and Aziscohos Lakes.

Note. Stage-discharge relation affected by backwater from pulpwood June 28 to Sept. 30.
ANDROSCOGGIN RIVER BASIN 57

Androscoggin River near Gorham, N. H.

Location. Lab 44°26'30", long 71°11'15", on right bank at Pulsifer Rips, 2 miles downstream from Dead River and 4 miles upstream from Gorham, Coos County.

Drainage area. 1,363 sq mi.

Records available. October 1913 to September 1957. October 1922 to February 1929 monthly 

discharge only, published in WSP 1?01. Published as "at Berlin" prior to October 1928.

Gage. Water-stage recorder since Mar. 16, 1929. Datum of gage is 832.88 ft above mean 

sea level, datum of 1929. Prior to Sept. 30, 1922, staff gage showing head and tailwater elevations at site 3 miles upstream at different datum.

Average discharge.--44 years, 2,428 cfs (adjusted).

Extremes. Maximum discharge during year, 4,340 cfs Apr. 22 (gage height, 5.16 ft); minimum daily, 1,490 cfs July 7.

1913-57: 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. Plow regulated by powerplants above station and by Kennebago, 

Rangeley, Mooselookmeguntic, Richardson, Umbagog, and Aziscohos Lakes (see p. 64).

Revisions. WSP 1001: Drainage area.

Rating table, water year 1956-57 (gage height, in feet, and discharge, 

in cubic feet per second)

3.1 

3.5 

4.0 

4.5 

4.9

1,400

1,820

2,460

3,230

3,880

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

1,990

2,050

1,930

1,900

1,900

1,920

2,100 

1,940

*1,990

1,840

1,890

1,890

1,920

1,950

1,920

1,930

1,950

1,940

1,930

1,940

1,920

1,940 

1,950 

2,070

1,980

1,950

1,960

1,940 

1,930

1,940

1,950

60,350

1,947

-965

Nov.

2,050

2,090

2,010

1,830

1,860

1,840

1,860 

1,900

1,890

1,920

1,870

1,950

2,050

1,950

1,940

1,950

2,020

1,950

1,880

1,860

1,930

2,840 

2,520 

2,060

1,980

1,930

1,920

1,820 

1,820

1,900

59,390

1,980

-677

Dec.

1,750

1,800

1,710

1,780

1,740

1,920

1,860 

2,050

1,920

1,680

1,780

1,86O

1,830

*1,750

1,750

1,870

1,820

1,790

1,810

1,840

1,780

1,750 

1,740 

1,750

1,790

1,740

1,760

1,820 

1,780

1,650

1,750

55,600

1,794

-637

Jan.

1,900

1,790

1,790

1,860

1,880

1,710

1,790 

1,810

1,740

1,800

1,700

1,740

1,780

1,700

1,730

1,760

1,800

1,780

1,740

1,750

1,880

1,840 

2,090 

2,480

2,290

2,150

1,960

1,880 

1,830

1,750

1,750

57,430

1,853

-857

Feb.

1,790

1,760

1,760

1,800

1,780

1,750

1,790 

1,800

1,790

1,790

1,780

1,740

1,780

1,790

1,760

1,760

1,750

1,760

1,790

*1,790

1,740

1,740 

1,780 

1,790

1,840

2,100

2,200

2,040

 

50,740

1,812

-946

Mar.

2,040

1,780

1,790

1,740

1,790

1,790

1,760 

1,790

1,840

1,760

1,730

1,730

1,730

1,730

1,750

1,900

1,810

1,670

1,660

1,710

1,700

1,750 

1,840 

1,820

1,710

1,730

1,810

1,790 

1,740

1,730

1,660

54,780

1,767

-446

Apr.

1,710

1,950

2,020

1,690

1,670

1,730

1,840 

1,610

1,660

1,540

1,620

1,680

1,860

1,680

1,580

1,600

1,720

1,800

1,920

2,330

3,390

5,800 

2,490 

2,090

1,880

2,180

2,260

2,260 

1,940

2,310

 

59,810

1,994

+3 , 640

May

2,540

2,190

1,920

1,800

1.550

1,700

1,690 

*1,60O

1,580

1,670

1,880

1,810

1,840

2,290

2,670

2,910

2,180

1,960

1,730

2,040

5,860

5,370 

2,700 

2,100

1,840

1,690

1,720

1,840 

1,690

1,600

1,600

63,560

2,050

+2,287

June

1,580

1,670

1,810

1,680

1,610

1,650

1,830 

1,830

1,660

1,580

1,580

1,610

1,610

1,610

1.550

1,610

1,590

1,560

1,680

1,700

1,550

1,570 

1,590 

1.920

1,620

1,660

1,670

1,550 

1,610

1,650

 - 

49,520

1,644

-502

July

1,560

1,580

1,680

*1,680

1,810

1,740

1,490 

1,560

1,750

1,740

1,670

1,690

1,700

1,680

1,780

1,730

1,670

1,610

1,700

1,720

1,690

2,150 

2,540 

1,810

1,930

1,750

1,750

1,740 

1,880

2,010

1,760

54,550

1,759

+250

Aug.

1,810

1,840

1,830

1,840

1,830

1,800

1,760

Ttslo

1,870

1,860

1^960

1,890

1,800

1,820

1,860

1,840

1,820

1,800

1,810

1,840

1,800

1,790 

1,820 

1,870

1,860

1,880

1,840

1,830 

1,860

1,860

1,820

56 , 950

1,837

-1,184

Sept,

1,820

1,840

1,920

1,810

1,840

1,840

1,860 

1,840

1,870

*1,840

1,870

1,870

1,880

1,900

1,740

1,840

1,860

1,820

1,850

1,850

1,840

1,860 

2.290 

2,060

1,870

1,820

1,800

1,870 

1,840

1,830

 

56,000

1,867

-1,390

Adjusted for change in reservoir contents

Mean

Cfsm 

In.

982 

0.720 

0.85

1,503 

0.956 

1.07

Calendar year 1955: 

Water year 1956-57:

1,157 

0.849 

0.98

996 

0.731 

0.84

866 

0.635 

0.66

1,321 

0.969 

1.12

Observed

5,634 

4.15 

4.61

4,557 

3.18 

5.67

Max 7,800 Min 1,520 jfean 2,232 

Max 3,860 Min 1,490 Mean 1,859

1,342 

0.985 

1.10

2,009 

1.47 

1.70

653 

0.479 

0.55

Adjusted

477 

0.550 

0.59

Mean 2,334 C fsm 1-71 In. 25.52 

Mean 1,759 C fsm 1-29 In. 17-52

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Kennebago, Rangeley, Mooselookmeguntic, Richardson, Umbagog, and Aziscohos Lakes.

505692 O - 59 - 5
58 ANDROSCOGGIN RIVER BASIN

Androscoggin River at Rumford, Maine

Location. Lat 44°32'45", long 70°32'35", on left bank at upper powerplant of Rumford 

Falls Power Co., 0.8 mile upstream from Swift River at Rumford, Oxford County.

Drainage area. 2,067 sq ml.

Records available.--May 1892 to September 1957 (October 1903 to September 1904 monthly 

discharge only, published in WSP 1301).

Gages.--Gages in pond above dam and in tailrace at upper plant. Prior to Aug. 1, 1937, 

gages In pond and tailrace of middle plant.

Average discharge. 65 years, 3,654 cfs (adjusted).

Extremes. Maximum daily discharge during year, 13,100 cfs Apr. 21; minimum daily, 1,370 

cfs Dec. 31.

1892-1957: Maximum discharge, 74,000 cfs Mar. 20, 1936; minimum daily, 625 cfs 

Mar. 27, 1911.

Remarks. Discharge computed from flow over upper dam and through wheels. Flow 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 1956 to September 1957

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.

2,470

2,350

2,310

2,070

2,020

2,020

3,020

3,740

2,970

2,560

2,310

2,290

2,280

2,250

2,310

2,230

2,210

2,290 

2,160

2,090

2,150 

2,160 

2,400

5,960 

3,080

2,620

2,470

2,410

2,330

2,300

2,240

76,O7O

2,454

-965

Nov.

2,440

2,630

2,440

2,360

2,210

2,120

2,220

2,140

2,200

2,120

2,180

2,100

2,370

2,370

2,210

2,270

2,360

2,390 

2,310

2,040

2,410 

6.390 

5,950

3,380 

2,580

2,250

2,650

2,690

2,430

2,330

78,540

2,618

-677

Dec.

2,170

2,010

2,O6O

2,070

2,040

2,180

2,620

5,690

3,380

2,540

2,450

2,680

3,010

2,520

2,290

2,540

3,450

2,980 

2,110

2,410

2,570 

2,5OO 

2,240

2,300 

3,010

2,510

1,720

2,000

2,290

1,600

1,370

75,310

2,429

-637

Jan.

1,870

2,110

2,010

2,180

2,270

2,160

2,030

2,130

2,160

2,060

2,100

1,940

2,030

2,000

1.860

1,890

1,980

2,000 

1,960

2,000

2,030 

2,260 

3,670

5.160 

3,960

3,390

2,840

2,710

2,460

2,330

2,210

73,760

2,379

-857

Feb.

2,210

2,270

2,120

2,190

2,170

2,130

2,170

2,140

2,160

2,110

2,O9O

2,090

2,080

2,040

1,960

1,920

2,000

1,990 

2,030

2,100

1.860 

2,060 

2,040

1,980 

2,010

2,170

3,470

5.780

_________

61,340

2,191

-946

Mar.

3,040

2,810

2,300

2,270

2,120

2,170

2,180

2,170

2,460

2,470

2,280

2,290

2,220

2,370

2,450

2,770

2,890

2,620 

2,280

2,490

2,420 

2,530 

3.150

2,880 

2,860

2,880

2,850

2,800

2,780

2,750

2 ,560

79,090

2,551

-446

Apr.

2,520

3,460

4,350

3,090

2,790

2,780

3,580

2,990

2,660

2,470

2,510

2,710

3,960

3,520

2,740

2,640

3,000

3,570 

4,630

6,850

15,100 

11,200 

7,990

6,520 

5,390

4,880

5,490

5,510

4,470

4,600

135,970

4,532

+3 , 640

Hay

4,410

3,640

3,070

2,760

2,540

2,310

2,460

2,400

2,290

2,330

2,610

2,810

2,570

3,830

4,540

6,150

4,180

3,180 

2,750

3,410

6.490 

5,970 

4,790

3,820 

3,120

2,870

2,680

2,820

2,610

2,330

2.250

103,970

3,354

+2,287

June

2,030

2,310

2,570

57555

2,250

2,040

2,110

2,530

2,1OO

2,000

1,870

1,920

1,970

1,780

1,700

1,760

1,700

1,670 

1,790

2,240

1,930 

1.620 

1,680

1,970 

2,220

2,050

2,260

1,980

2,060

2,540

60,950

2,032

-302

Jul-'

2,380

1,P70

1,P60

2,330

2.S20

2,f3O

2,130

1,780

2,050

2, £50

2,120

1,F10

1,840

1,850

1,F70

1,890

1.F70

1,700 1,7"50"

1,770

1,750 

2,620 

3.720

2,eeo

2,260

2,f60

1,950

2,040

2,340

2,840

2,r40

68,220

2,?01

+250

Aug.

2,070

2,160

2,010

1,950

2,150

1,910

1,860

1,880

1,900

2,220

2,500

2,250

2,040

1,860

1,920

1,890

2,060

1.790 

1,850

1,850

1,870 

1,820 

1,810

1,930 

1,910

1,880

1,960

1,840

1,830

1,850

1,970

60,590

1,955

-1,184

Sept.

1.750

2,010

2,210

1,860

1,860

1,830

1,830

1,890

1,840

1,830

1,840

1,790

1,830

1,970

1,750

1,840

1,910

1,810 

1,820

1,780

1,840 

1,840 

2,410

2,450 

2,060

1,800

1,840

1,750

1,910

1,750

56,900

1,897

-1,390

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

1,489 

0.720 

0.83

1,941 

0.939 

1.05

Calendar year 1956: 

Water year 1956-57:

1,792 

0.867 

1.00

1,522 

0.736 

0.85

1,245 

0.602 

0.63

2,105 

1.02 

1.18

8,172 

3.95 

4.41

5,641 

2.73 

3.15

Observed

Max 15,400 Mln 1,370 Mean 3,297 

Max 13,100 Kin 1,370 Mean 2,55O

1,730 

0.837 

0.93

2,451 

1.19 

1.37

Adjusted

771 

0.373 

0.43

507 

0.245 

0.27

Mean 3,399 Cfsm 1-64 _n. 22.37 

Mean 2,450 C fsm 1-19 In. 16.10

t Change In contents, equivalent In cubic feet per second, in Kennebago, Rangeley, Mooselookmeguntic, Richardson, Umbagog, and Aziscohos Lakes.
ANDROSCOGGIN RIVER BASIN 59

Swift River near Roxbury, Maine

Location.--Lat 44°38'30", long 70 0 35'15", on left bank 2? miles downstream from Roxbury, 

Oxford County, and 6 miles upstream from mouth.

Drainage area.--95.8 sq mi.

Records available. June 1929 to September 1957.

~"Gage.--Water-stage recorder. Datum of gage is 61S.67 ft above mean sea level, datum of 

Average discharge. 28 years, 194 cfs.

Extremes. Maximum discharge during year, 3,030 cfs Apr. 21 (gage height, 6.12 ft); maximum gage height, 6.60 ft Jan. 23 (backwater from ice); minimum discharge, 10 cfs 

Sept. 20 (gage height, 1.01 ft).

1929-57: 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 period of ice effect, which are fair.

Revisions (water years).--WSP 801: 1934(m). WSP 1031: Drainage area. WSP 1301: 1937- 

38(M), 1942(M).

Rating tatoj.e, water year 1956-57, except period of ice effect (gage 

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

1.0 

1.2 

1.4 

1.7 

2.0 

2.5

9.8

19

33

69

124

255

3.0 

3.5 

4.0 

5.0 

5.2

437

680

1,010

1,810

2,010

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Ttetal

Mean

Cfam

In.

Oct(.

45

*l42

48

*3

41

36

3§u

323

163

110

90

83

74

69

68

62

58

55

53

50

50

49

108

312

154

108

97

86

79

72 

69

3,047

98.3

1.03

1.19

Nov.

95

110

88

81

71

68

66

63

59

58

53

58

74

69

66

74

95

86

66

69

86

845

316

170

124

112

100

93

90

88

3,493

116

1.21

1.35

Dec.

86

90

93

97

93

90

91

130

120

102

93

104

100

81

76

90

104

93

*97

91

86

79

76

72

69

69

68

68

66

65 

63

2,702

87.2

0.910

1.05

Jan.

61

59

58

56

54

53

50

49

48

45

44

43

41

40

39

38

36

*35

35

35

35

36

255

565

435

360

300

260

225

205 

192

3,787

122

1.27

1.46

Feb.

176

156

142

132

124

104

93

90

84

81

78

74

71

69

68

66

63

58

*55

53

49

45

43

42

41

45

104

355

-

2,561

91.5

0.955

0.99

Mar.

255

168

124

104

93

86

78

72

91

124

104

84

78

91

104

114

116

*97

99

100

104

116

120

120

122

124

130

132

130

128 

124

3,532

114

1.19

1.37

Apr.

126

210

250

168

150

160

162

146

138

132

134

166

210

168

150

168

242

281

500

740

2,010

1,190

933

898

686

531

546

575

458

493

12,746

425

4.44

4.95

May

338

258

208

183

170

156

147

150

150

*168

387

223

202

272

700

541

323

242

193

440

664

390

285

245

186

163

159

170

145

120

ua

8,088

261

2.72

3.14

June

100

145

188

126

102

88

166

143

100

81

69

68

65

55

53

43

36

33

51

72

47

34

30

42

42

114

99

76

81

88

2,437

81.2

0.848

0.95

July

55

69

*65

100

166

161

76

54

44

97

68

45

35

29

25

24

23

20

18

16

14

108

108

56

49

37

29

29

82

262

TT5

2,074

66.9

0.698

0.80

A og.

91

55

43

43

32

24

21

19

18

30

114

252

86

53

39

31

26

23

20

18

16

14

13

I?

13

14

18

*16

14

13 

13

1,195

38.5

0.402

0.46

Sept.

12

11

16

24

20

18

14

14

13

12

11

12

12

12

11

11

14

14

11

11

11

13

~69 138

32

23

18

16

14

14

621

20.7

0.216

0.24

Calendar year 1956: Max 1,930 Mln 11 Mean 180 Cfsm 1.88 In. 25.51

Water year 1956-57: Max 2,010 Min 11 Mean 127 Cfsm 1.33 In. 17.95

Peak discharge (base, 2,400 efs). Apr. 21 (5 p.m.) 5,050 efs (6.12 ft)._________________

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 25 to Apr. 14 (no gage-height record Jan. 14- 

18, Jan. 25 to Feb. l).
60 ANDROSCOGGIN RIVER BASIN

Nez insect River at Turner Center, Maine

Location. Lab 44°16'10", long 70 C 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 1957.

Gage. Water-stage recorder. Altitude of gage is 270 ft (from topographic map).

Average discharge. 16 years, 296 cfs.

Extremes . --Maximum discharge during year, 668 cfs Nov. 23 (gage height, 3.08 ft); minimum, 

16 cfs Sept. 29, 30 (gage height, 0.96 ft).

1941-57: Maximum discharge, 13,900 cfs Mar. 27, 1953 (gage height, 11.18 ft); minimum, 5.6 cfs Hug. 29, 1956 (gage height, 0.72 ft).

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

Rating table, water year 1956-57, except periods of ice effect (gage 

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

0.9 

1,1 

1.3 

1.6

2.0 

2.5 

3.0

195

375

620

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

136

*125

122

112

108

98

131

281

281

210

162

140

127

122

116

110

106

100

94

89

87

84

118

390

595

284

225

195

171

155 

142

5,014

162

0.947

1.09

Nov.

183

278

250

210

186

16 O

150

140

140

131

1ZO

T2?

174

189

171

155

148

148

142

136

148

470

638

460

295

264

250

253

222

210

6,543

218

1.27

1.42

Dec.

196

177

162

150

1ST

158

185

232

240

230

225

288

367

345

290

274

305

290

*260

225

216

198

200

198

196

192

190

186

182

178

6,865

221

1.29

1.49

Jan.

174

170

168

168

166

166

166

162

162

162

160

16O

16 O

158

140

144

160

170

152

150

152

166

260

540

*455

380

335

305

280

255

230

6,576

212

1.24

1.43

Feb.

215

205

20O

186

170

162

156

152

150

142

140

130

114

108

106

104

102

104

*104

106

104

102

102

102

100

114

196

565

4,041

144

0.842

0.88

Mar.

335

290

270

255

240

230

220

220

J15

585

530

420

367

367

411

434

480

480

438

402

371

442

555

598

530

490

490

475

452

420

384

12,496

403

2.36

2.72

Apr.

367

447

592

495

411

420

525

545

500

442

447

438

545

535

442

384

384

398

406

420

442

442

375

315

274

264

260

242

225

225

12,207

407

2.38

2.66

May

222

201

174

162

150

142

136

125

*118

116

127

129

133

180

246

402

359

260

201

250

590

K55

388

292

232

186

165

239

256

204

162

7,092

229

1.34

1.54

June

138

129

148

142

122

110

120

125

110

98

89

84

84

76

73

80

87

82

78

89

142

98

73

58

¥T

96

125

136

129

122

3,106

104

0.608

0.68

July

108

91

*75

70

71

84

78

80

82

112

112

87

70

58

49

42

39

33

31

30

27

55

122

108

93

78

66

57

55

140

207

2,410

77 .7

0.454

0.52

Aug.

168 Tie

91

75

65

53

46

41

37

42

53

63

52

42

39

37

33

30

29

36

40

40

39

36

35

36

30

*24

21

20

20

1,491

48.1

0.281

0.32

Sept.

18

18

20

21

20

20

20

25

28

26

25

25

24

24

22

23

25

23

22

22

22

21

24

25

22

21

19

18

16T~C

J-D

655

21.8

0.127

0.14

Calendar year 1956 : Max 2,390 Min 5.8 Mean 294 Cfsm 1.72 In, 23.41

Water year 1956-57 : Max 598 Min 16 Mean 188 Cfsm 1.10 In. 14.89

Peak discharge (base, 1,700 cfs). No peak above base..

* Discharge measurement made on this day.

Note. --Stage-discharge relation affected by ice Nov. 20, Dec. 1, 4, 5, 9-11, 14-, 15, 17-20, Dec. 23 

to Mar. 12.
ANDROSCOGGIN RIVER BASIN 61

Little Androscoggin River near South Paris, Maine

Location. Lat 44°1V'05", long V0°32'10", on right bank just upstream from Biscoe Falls, 

4f miles upstream from South Paris, Oxford County.

Drainage area. 76.2 sq mi.

Records available. September 1913 to April 1924, October 1931 to September 1957.

Gage. Water-stage recorder and concrete control. Datum of gage is 394.48 ft above mean 

sea level, datum of 1929. Prior to Apr. 30, 1924, chain gage at same site and datum.

Average discharge. 36 years (1913-23, 1931-57), 137 cfs.

Extremes. Maximum discharge during year, 436 cfs Nov. 22 (gage height, 4.55 ft); minimum, 

4.2 cfs Sept. 30 (gage height, 1.52 ft).

1913-24, 1931-57: 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 except those for period of no gage-height record, which are 

good. Occasional slight diurnal fluctuation at low and medium flow by saw and grist 

mills above station.

Revisions (water ;years) . WSP 726: Drainage area. WSP 1301: 1915-23(M) .

Rating table, water year 1956-57 (gage height, In feet, and discharge, 

In cubic feet per second)

1.5

1.6

2.0 

2.5

3.0 

3.5 

4.0 

4.3

180

285

362

49

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

80

*86

82

70

64

48

205

302 lio

121

93

75

70

66

64

60

57

56

50

47

45

47

67

237

163

118

93

82

73

66

63

2,930

94.5

1.24

1.43

Nov.

85

1O9

86

75

68

64

60

57

57

52

47

50

70

69

83

58

61

59

57

53

58

335

25T

176

124

104

109

102

88

84

2,781

92.7

1.22

1.36

Dec.

83

78

73

69

64

61

58

74

116

105

89

121

161

T45

115

126

159

132

108

101

94

84

76

77

80

78

68

71

70

61

65

2,862

92.3

1.21

1.40

Jan.

63

60

59

58

56

51

53

57

55

53

51

51

51

44

40

39

46

46

47

47

46

49

210

207

245

192

157

132

109

94

84

2,652

85.5

1.12

1.29

Feb.

80

74

69

70

67

64

63

62

58

63

61

55

51

51

51

49

51

50

49

47

45

44

43

43

43

49

130

194

1,776

63.4

0.832

0.90

Mar.

174

143

115

92

76

71

66

65

114

196

161

137

116

135

176

180

196

182

157

157

150

198

252

259

220

210

220

210

202

163

4,981

161

2.11

2.43

Apr.

163

216

259

196

172

176

235

220

204

172

188

198

338

272

212

194

224

256

281

299

325

287

220

184

156

154

148

132

121

Tpc Itb

6,328

211

2.77

3.09

May

111

93

83

78

72

70

63

59

55

*ILL

67

64

67

126

178

259 169"

122

95

160

163

256

170

129

95

76

74

147

114

84

71

3,421

110

1.44

1.66

June

62

59

71m52

47

46

55

45

37

33

29

29

27

24

20

18

16

17

65

40

27

18

16

23

58

55

51

56

63

1,222

40.7

0.534

0.60"

July

45

37

30

30

40

50

36

29

30

64

47

33

25

20

18

17

15

14

13

12

11

27

60

35

H5

22

19

18

25

235

TTZ

1,194

38.5

0.505

0.58

Aw$.

63

43

32

27

2«,

20

18

16

15

16

44

35

23

19

17

16

14

14

12

11

11

10

9.4

8.3

7.8

7.8

8.0

*7.3

7.1

6.9

6^5

575.1

18.6

0.244

0.28

Sept.

6.0

5.6

6.0

6.9

7.1

6.5

5.8

6.2

7.1

6.5

6.2

6.5

6.7

6.7

6.2

6.5

8.6

7.3

6.7

6.2

6.0

5.8

6.5

7.3

7.6

7.1

5.8

5.2

5.0

4.4

192.0

6.44

0.084

0.09

Calendar year 1956: Max 1,100 Mln 7.1 Mean 134 cfsm 1.76 In. 23. 9O

Water year 1956-57: Max 338 Mln 4.4 Mean 84.7 Cfsm 1.11 In. 15.11

Peak discharge (base, 1,OOO cfs), No peak above base.

* Discharge neasurement made on this day.

Note. No gage-height record Dec. 1-9; discharge estimated on basis of recorded range in stage and 

weather records.
62 ANDROSCOGGIN RIVER BASIN

Little Androscoggin River near Auburn, Maine

Location.--Lat 44°03'50", long 70°16 I 25", on right bank just upstream from 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 1957.

Gage. Water-stage recorder. Altitude of gage is 215 ft (from topographic map).

Average discharge. 17 years, 549 cfs (adjusted).

Extremes. Maximum discharge during year, 1,000 cfs Mar. 24 (gage height, 3.80 ft); minimum, 44 cfs Sept. 30 (gage height, 1.33 ft).

1940-57: 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 river.

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

regulated by Pennesseewassee and Thompson Lakes (see p. 64 ) and several powerplants 

above station.

Rating table, water year 1956-57, except periods of ice effect (gage 

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

1.3 39 2.5 356

1.5 71 3.0 565

2.0 190 3.8 1,000

Discharge, In cubic feet per second, water year October 1956 to Septenftor 1957

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.

*338

360

349

326

308

2S8

323

360

406

390

375

356

338

319

305

288

274

261

245

238

229

216

275

438

438

422

398

375

352

330

312

10,232

330

-60.5

Nov.

330

345

356

352

341

326

312

302

316

323

316

323

383

375

367

349

330

316

305

294

274 3T9"

"555 556

498

447

447

434

410

375

11,033

368

-18.5

Dec.

352

340

325

335

355

383

406

463

468

447

430

552

635

630

583

552

524

530

535

451

447

426

402

375

268

*341

395

380

360

325

290

13,305

429

-15.7

Jan.

225

270

265

265

265

260

260

260

260

255

250

245

245

240

240

245

245

240

245

240

240

240

500

580

*685

650

600

565

530

511

480

10,601

342

-16.4

Feb.

455

442

422

406

394

386

383

367

364

352

325

305

510

310

305

300

285

*280

275

270

270

280

275

270

270

275

455

450

9,481

339

+6.2

Mar.

530

525

515

465

450

435

425

415

590

700

625

685

665

680

743

826

862

862

798

760

754

820

916

988

946

916

850

776

726

710

685

21,643

698

+137

Apr.

635

695

782

732

685

792

832

832

832

809

838

844

922

92?

809

726

685

685

680

695

721

710

675

640

588

578

574

538

502

c-c-e 

ODD

21,514

717

+66.7

Hay

529

485

451

422

402

394

386

379

*383

360

360

356

364

386

426

463

498

485

422

490

832

910

7§T

645

552

434

402

426

463

447

394

14,733

475

-3.4

June

375

356

349

352

338

326

326

308

291

271

254

245

232

222

225

213

199

190

187

2oT

213

216

207

196

213

284

274

330

298

274

7,971

266

-30.9

Jul*f

210

114

97 ]75I

114

114

101

99

126

*179

196

199

179 1-59

1«2

216

210

225

210

199

182

184

182

199

204

193

176

170

184

213

248

5,365

173

-44.4

Aug.

232

213

202

187

179

162

144

131

136

139

159

152

149

141

131

126

122

114

134

108

103

97

80

71

64

61

*57

52

56

59

61

3,822

123

-72.1

Sept.

59

64

77

79

79

77

77

79

79

79

82

90

7¥

79

77

77

77

77

75

75

77

77

73

69

64

59

54

51

48

45

2,154

71.8

-59.4

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

270 

0.823 

0.95

350 

1.07 

1.19

Calendar year 1956: 

Water year 1956-57;

413 

1.26 

1.45

326 

0.994 

1.15

345

1.05 

1.09

835 

2.55 

2.94

784 

2.39 

2.67

472 

1.44 

1.66

Observed

Max 3,410 Hln 52 Mean 574 

Max 988 Kin 45 Mean 361

235 

0.716 

0.80

129 

0.393 

0.45

50.9 

0.155 

0.18

Adjusted

12.4 

0.038 

0.04

Mean 570 Cfsm 1-74 jn, 23.59 

Mean 352 Cfsm 1-07 in. 14.57

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Pennesseewassee ard Thompson Lakes. 

Note.--Stage-discharge relation affected by ice Dec. 2-5, 18, 19, 27-31, Jan. 2-24, 27-29, Feb. 11 

to Mar. 6, Mar. 9-14.
ANDROSCOGGIN RIVER BASIN 63

Androscoggin River near Auburn, Maine

Location. Lat 44°04'15", long 70°12'35", on right bank Ij miles downstream from Little 

Androscoggin River and 2 miles downstream from north bridge between Auburn and Lewiston, Androscoggin County.

Drainage area. 3.257 sq mi.

Records available.--October 1928 to September 1957. October 1928 monthly discharge only, 

published in WSP 1301.

Gage. Water-stage recorder. Datum of gage is 109.18 ft above mean sea level, datum of 

1929.

Average discharge. 29 years, 5,927 cfs (adjusted).

Extremes. Maximum discharge during year, 19,400 cfs Apr. 22 (gage height, 8.03 ft); minimum daily, 420 cfs Sept. 1.

1988-57: 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 dams; minimum, 309 cfs Sept. 28, 1941 (gaje height, 

0.34 ft); minimum daily, 340 cfs Sept. 28, 1941.

Remarks. Records good. Considerable fluctuation caused by powerplants above station. 

Plow regulated by powerplants above station and by Kennebago, Rangeley, Moo3elookmeguntic, 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 1956-57 (gage height, in feet, and discharge, 

in cubic feet per second)

0.5 

.7 

1.0 

1.5 

2.0

392

500

695

1,100

1,650

3.O 

4.O 

6.0

7.7

3,240

5,350

11,100

17,700

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

4,040

4,140

3,600

5,840

4,060

2,120

 755

4,560

5 ? 950

4,710

4,450

4,290

5,080

1,990

3,860

3,710

3,760

3,970

4,040

2,190

610 

3,210

5,820

4,970

5,520

4,880

4,150

5,360

4,070

4,140

4,090

115,935

3,740

-1,0815

Nov.

4,120

4,200

2,540

2,650

3,930

4,220

4,190

4,200

4,170

2,300

730

2,540

4,120

4,250

4,190

4,200

2,540

2,050

4,170

4,160

4,220 

3,670

9,060

7,650

5,550

4,840

4,460

4,470

4,450

4,500

122,520

4,077

-658

Dec.

3,810

2,890

3,950

4,260

3,610

3,640

4,260

2,860

5,670

4,880

4,460

4,760

5,060

5,310

4,160

4,210

4,660

5,420

4,620

4,340

4,340 

3,840

5,910

3,310

3,070

4,030

4,310

4,250

2,670

2,220

2,580

123,340

3,979

-625

Jan.

2,340

3,660

3,750

3,840

2,570

1,990

4,510

4,450

4,100

3,750

3,700

2,250

740

3,560

3,680

3,580

3,640

3,750

1,410

820

4,140 

3,580

4,480

5,640

7,300

6,250

5,700

5,140

5,060

5,040

4,980

119,180

3,845

-928

Feb.

4.940

2,950

1,400

4,590

4,300

4,460

4,430

4,410

2,320

885

4,360

4,520

4,130

4,160

3,660

1,590

830

3,920

4,110

4,O50

3,620 

3,680

1,510

810

4,060

4,160

4,630

4,930

-

97,195

3,741

-941

Mar.

5,260

5,220

3,160

4,840

4,590

4,500

4,360

4,250

,2.490

3,980

5,440

5,300

5,260

5,210

5,440

5,750

5,200

5,670

5,960

5,380

5,330 

5,500

6,080

6,880

6,500

6,420

6,150

5,760

5,900

5,820

5,640

163,240

5,266

-211

Apr.

5.590

5,440

6,780

7,560

6,980

6,460

5,660

6,390

6,900

5,810

5,780

5,760

6,120

7,130

6,730

6,000

5,730

6,030

6,850

7,940

10,800 

17,400

14,600

10,900

9,560

8,360

7,750

7,990

7,770

7,250

229,820

7,661

+3,704

May

7,080

6,630

6,090

5,520

3,990

4,960

4,660

4,500

*4,SOO

4,400

3,480

2.860

4,860

4,610

6,040

8,410

9,000

6,780

5,580

6,160

7,700 

10.600

9,060

7,540

6,530

5,050

5,060

4,630

*4,750

4,470

4,100

179,500

5,790

+2,279

June

5,620

5,650

4,210

4,5OO

4,260

4,280

4,280

3,050

1,680

4,230

4,040

3,720

3,530

3,280

1,780

650

3,300

3,200

3,100

3,200

5,190 

2,120

675

5,260

3,220

3,360

4,000

3,760

1,970

1,230

93,945

3,131

-546

July

4,020

4,250

5,510

695

3,620

2,780

2,770

3,740

3,570

2,750

3,350

2,780

1,900

1,320

3,350

2,980

2,970

3,440

3,270

1,180

585 

3,04O

3,410

3; 860

3,900

3,880

2,980

720

5,840

3,640

3,890

91,770

2,960

+175

A'lg.

5.940

5,880

2,760

1,040

3,860

3,740

3,470

5,340

2,880

1,520

655

3,250

5,570

3,680

3,490

5,300

1,280

610

3,060

3,190

2,740 

2,760

2,630

1,040

535

3,050

3,200

3,220

5,310

3,100

1,060

8?, 960

2,676

-1,378

Sept.

420

535

5,180

5,030

3,320

3,100

1,400

490

2,910

2,750

5,000

2,710

5,020

1,320

605

3,020

3,120

3,070

2,650

2,650

970 

495

3,020

3,330

3.480

3,230

2,890

1,260

470

2,860

68 , 305

2,277

-Z.404

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

2,658 

0.816 

0.94

3,419 

l.OE 

1.17

Calendar year 1956: 

Water year 1956-57:

3,354 

1.03 

1.19

2,917 

0.896 

1.03

2,550 

0.777 

0.81

5,055 

1.55 

1.79

Observed

11,360 

3.49 

3.89

8,069 

2.48 

2.86

Max 25,6OO Mln 525 Mean 5.7O1 

Max 17,400 Mln 420 Mean 4,075

2,785 

0.855 

0.95

5,155 

0.965 

1.11

1,298 

0.399 

0.46

873 

0.268 

0.50

Adjusted

Mean 5,806 cfsm 1.78 In. 24.26 

Mean 3,959 cfsm 1.22 In. 16.50

* Discharge measurement made on this day.

t Change In contents, equivalent In cubic feet per second, in Kennebago, Rangeley, Mo^selookmeguntlo, Richardson, Umbagog, Azlsoohos, Auburn, Pennesseewassee, and Thompson Lakes, an-J Gulf Island 

Pond.
64 ANDROSCOGGIN RIVER BASIN

Reservoirs In Androscoggln River basin

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 

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. 

Gage-height 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 Androscoggln River, at Errol 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 by Union 

Water Power Co.

Aziseohos 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 of 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 192,000,000 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 1956 to September 1957

Date

Sept. 30.. ...............

Sept. 30... ..............

Kennebago 

Lake*t

_

_

_

_

_

_

_

-

Aziseohos 

Laket

5,456

Range ley 

Laket

559

Gulf Island 

Pond*

2 424

2 273

2 479

2,369

Mooselookmeguntic

Laket

1,499

62

3,110

5,906

3,110

Lake 

Auburnt

270

Upper and Lower 

Richardson Lakest

3,806

3,566

2,905

2,613

1,932

882

882

1,646

3,381

2,357

1,520

2,978

3,751

Pennesseewassee 

Lakett

93

121

98

63

49

85

107

66

55

TMbagog 

Laket

1,958

1,650

1,794

1,686

1,83O

1,252

850

3,022

2,924

2,262

2,417

1,977

1,722

Thompson 

Laket*

1,457

1,390

1,410

1,742

1,390

* No gage-height record available from Sept. 30, 1956,to Sept. 30, 1957; flow records adjusted on 

basis of no change In contents during the year.

t Contents at 7 a.m. on first day of following month.

t Contents at 12 p.m.

tt Contents as of last day of month determined by interpolation.

tt Contents at 8 a.m. on last day of month.
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 1957.

Gage. Water-stage recorder. Altitude of gage is 10 ft (from topographic map).

Average discharge. 8 years, 292 cfs.

Extremes.--Maximum discharge during year, 1,120 cfs Mar. 10 (gage height, 2.98 ft); maximum gage height, 3.17 ft Mar. 10 (ice jam); minimum discharge, 27 cfs Aug. 24 (gage 

height, 0.96 ft) .

1949-57: 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, backwater from debris, 

and no gage-height record, which are fair. Some diurnal fluctuation at low flow caused 

by mill above station.

Rating table, water year 1956-57, except periods of loe effect or backwater from 

debris (gage height, In feet, and discharge, In cubic feet per second)

0.9

1.0

1.1

1.3

1.6 

2.0 

2.5 

2.8

196

385

705

950

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

49

45

47

47

47

45

Ja

170

114

85

70

60

55

53

53

51

*47

53

47

47

47

47

90

531

364

214

148

124

106

98

90

3,122

101

0.711

0.82

Nov.

98

134

124

109

100

92

87

85

85

87

78

85

163

209

167

138

120

114

112

100

120

650

622

338

188

196

333

391

304

230

5,659

189

1.33

1.48

Dec.

170

152

120

112

110

124

188

349

369

285

236

765

923

616

385

338

338

315

285

210

180

159

138

138

209

*255

250

200

184

168

156

8,427

272

1.92

2.21

Jan.

144

138

130

124

120

118

114

112

110

102

92

87

82

78

70

66

62

58

55

51

49

64

155

878

684

512

330

*255

205

180

160

5,385

174

1.23

1.42

Feb.

152

148

140

138

134

134

130

128

120

120

114

112

110

106

102

92

87

80

73

70

68

*66

64

64

64

85

385

590

-

__ _ _ _ .

3,676

131

0.923

0.96

Mar.

440

350

275

220

188

156

143

141

609

880

670

465

369

' 385

461

565

670

622

467

385

328

385

461

442

364

323

299

280

262

244

222

12,076

390

2.75

3.17

Apr.

209

272

448

338

299

705

812

544

402

369

486

442

512

448

333

272

240

231

218

209

205

188

171

159

148

152

171

163

148

152

9,446

315

2.22

2.48

May

144

124

114

106

100

*95

92

87

82

78

82

90

87

92

141

167

130

106

95

124

492

380

236

159

120

100

95

112

109

90

82

4,111

133

0.937

1.08

June

78

80

92

95

82

78

73

75

73

66

60

58

55

55

55

55

49

45

55

87

66

51

47

44

58

112

240

190

85

66

2,325

77.5

0.546

0.61

July

58

55

53

58

70

94

74

62

57

*62

66

60

53

49

45

42

41

39

37

37

36

37

44

47

47

45

42

39

41

90

73

1,653

53.3

0.375

0.43

Aug.

58

49

44

42

39

34

33

33

31

36

37

39

36

33

31

33

37

36

33

31

31

30

29

23

29

30

*33

33

31

31

30

1,081

34.9

0.246

0.28

Sept.

30

29

31

36

36

36

34

36

39

39

39

39

39

39

36

34

34

33

31

31

31

33

37

42

39

36

31

30

30

33

1,043

34.8

0.245

0.27

Calendar year 1956 : Max 2,650 Min 31 Mean 260 Cfsm 1.83 In. 24. 9O

Water year 1956-57 : Max 880 Min 29 Mean 159 Cfsm 1.12 In. 15.21

Peak discharge (base, 1,500 cfs). No peak abo bas

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Nov. 30 to Dec. 5, Dec. 18, 19, 26, 27, Dec. 30 to 

Jan. 23, Jan. 27 to Mar. 6, Mar. 10-12, 16, 17. Backwater from debris Oct. 1-23. No gage-height 

record June 26 to July 10; discharge estimated on basis of weather data and flow of nearby streams.
66 PRESUMPSCOT RIVER BASIN

Presumpscot River at outlet of Sebago Lake, Maine

Location.--Lat 43°49'05", long 70"27'00", at dam of hydroelectric plant at Eel Weir Falls, 

1 mile downstream from lake outlet, Cumberland County.

Drainage area.--436 sq mi.

Records available. January 1887 to September 1957.

Gage.--Float gages in forebay and tailrace of hydroelectric plant at Eel Weir Falls and 

staff gages at dam on outlet of Sebago Lake.

Average discharge. 70 years, 663 cfs (unadjusted).

Remarks. Discharge computed from Alien meter records for each of 3 pairs of water wheels 

and from records of openings of 2 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 W»ter District and 

leakage through dam, totaling about 35 cfs, not included in figures of daily discharge. 

Flow 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 (water years).--WSP 261: Drainage area. WSP 1301: 1920-50 (adjusted monthly 

runoff in inciches).

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

6

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.

776

767

769

767

769

767

766

769

767

769

768

767

768

766

767

766

767

755

m774

781

766

772

776

772

775

770

806

772

769

769

23,886

771

-447

Nov.

770

768

768

766

767

768

768

759

770

769

757

764

765

765

765

763

763

766

760

764

758

717

761

763

761

760

761

762

762

764

22,874

762

-334

Dec.

757

760

759

762

758

754

759

757

752

727

754

648

658

658

757

760

757

758

758

757

757

757

758

496

0

776

737

735

737

552

521

21,636

698

-102

Jan.

786

741

718

727

732

746

757

757

756

755

756

754

756

677

677

675

676

677

676

675

675

665

543

412

547

598

660

656

657

668

680

21,035

679

-199

Feb.

654

669

645

670

665

652

673

664

'663 676

674

674

675

674

674

672

674

671

673

674

671

670

668

666

671

664

'63T 528

18,541

662

-179

Mar.

662

644

639

672

648

659

659

656

520

525

652

645

650

646

645

626

624

649

646

624

668

636

638

622

537

529

483

490

504

502

502

18,802

607

+398

Apr.

506

505

480

492

474

220" 187

477

469

495

479

496

466

490

492

504

503

503

497

408

335

501

484

493

490

511

328

230

471

498

13,484

449

+670

May

502

502

500

329

250

499

482

486

500

501

327

158

334

339

340

342

340 225'

169

326

296

338

337

337

222

169

345

340

339

340

340

10,854

350

+156

June

222

165

340

340

340

341

338

221

166

341

341

341

339

335

189

170

337

376

"357 398

386

259

200

382

335

253

342

397

308

0_

8,889

296

+64

July

0

o

o

0

0

0

587

398

475

448

443

402

267

202

389

392

402

402

411

277

201

370

337

339

351

350

231

165

334

324

328

8,825

285

-230

Aug.

324

341

220

110

307

337

336

336

336

22O

224

320

309

336

318

314

322

321

303

334

324

325

330

320

319

313

335

320

337

338

317

9,546

308

-413

Sept.

O

0

420

331

307

334

335

304

320

334

323

329

327

329

333

303

338

341

342

341

341

302

338

339

337

337

338

336

305

327

9,291

310

-260

Adjusted for change In reservoir contents and diversion

Mean 

Cfsm 

In.

324 

0.743 

0.86

428 

0.982

1.10

596 

1.37

1.58

480 

1.10 

1.27

483

1.11 

1.16

1,005 

2.31 

2.66

1,119 

2.57 

2.87

506 

1.16 

1.34

Observed

Calendar year 1956: 

Water year 1956-57:

Max 930 Mlix 0 Mean 649 

Max 806 Mln 0 Mean 514

360 

0.826 

0.92

55 

0.126 

0.15

-105 

-0.241 

-0.28

50 

0.115 

0.13

Adjusted

Mean 729 Cfsn 1.67 In. 22.77 

Mean 441 Cfsn 1.01 In. 13.76

t Change In contents, equivalent In cubic feet per second, In Sebago and other lakes upstream; 

diversion by Portland Water District and leakage through dam.

Note. Negative figures Indicate 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 Palls, lijf 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 (ga^e heights 

only), February 1929 to September 1957.

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. 34 years (1903-9, 1929-57), 923 cfs.

Extremes. Maximum discharge during year, 6,430 cfs Apr. 21 (gage height, 7.20 ft); maximum gage height. 8.96 ft Feb. 27 [ice jam); minimum discharge, 91 cfs Sept. 16 (gage 

height, 1.99 ft).

1903-9, 1929-57: 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, which are fair. 

Revisions (water years). WSP 756: Drainage area. WSP 1301: 1908-9.

Rating table, water year 1956-57, except periods of Ice effect (gage 

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

2.5 

3.0

93

115

165

228

420

3.5 

4.0 

5.0 

6.0 

6.4

685

1,050

2,200

3,840

4,620

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

31

Total

Mean

Cfsm

In.

Oct.

527

496

481

432

429

407

1,370

1,580 

938

750

661

614

575

558

527

501

471

461

434

425

416 

407

443

1,370

813

649

586

548

516

496

466

19,372

625

1.62

1.87

Nov.

532

841

685

597

553

532

516

491 

476

461

434

452

476

452

434

448

452

434

411

580

411 

1,870

1,240

780

660

650

625

570

535

495

17,893

596

1.54

1.72

Dec.

460

450

445

450

450

445

460

1.050 

9l4

720

625

750

860

820

757

827

1,040

869

730

685

665

635

620

615

610

555

540

525

490

425 

400

19,887

642

1.66

1.91

Jan.

365

360

350

335

330

315

310

300 

295

290

285

280

275

275

270

260

265

265

265

265

270 

280

1,340

2.400

1,340

, 970

750

*685

625

590 

570

15,775

509

1.32

1.52

Feb.

555

535

505

490

475

455

440

430 

415

400

385

370

360

355

350

340

330

325

315

310

*315 

305

SIS

305

310

330

970

1.780

-

12,770

456

1.18

1.23

Mar.

1.140

820

650

565

550

555

525

515 

550

610

555

525

515

550

635

718

750

685

*614

619

586 

631

718

724

673

673

655

631

667

643

603

19,850

640

1.66

1.91

Apr.

603

862

1,260

876

827

862

1,130

946 

883

778

778

778

1,040

883

778

785

883

978

1,200

1,850

m2,490

2,600

2,210

1,630

1,930

1,920

1,580

1,540

43,190

1,440

3.73

4.16

May

1,190

986

890

820

750

711

*685

673

661

631

757

661

631

1,100

1,040

1,300

883

737

661

810

1.790 

1,420

1,070

930

785

704

724

744

685

56i

26,601

858

2.22

2.56

June

521

506

558

486

461

425

466

506 

420

376

352

332

321

302

309

291

262

255

248

255

242

228

221

225

248

394

407

394

475

735

11,221

374

0.969

1.08

July

438

389

340

555

800

1,000

569

434 

389

558

*443

385

344

306

284

259

252

235

225

208

195 

208

435

302

291

266

238

221

255 

608

411

11,843

382

0.990

1.14

Aug.

328

262

228

205

202

189

174

165 

162

165

192 198'

174

152

148

152

142

140

132

128

125 

115

115

108

106

115

128

132

113 

111

102

4,908

158

0.409

0.47

Sept.

97

138

195

165

138

113

111

111 

100

97

95

95

95

93

93

95

138

140

115

102

100 

102

132

189

142

120

108

100

93 

93

3,505

117

0.303

0.34

Calendar year 1956: Max 7,620 Min 95 Mean 918 Cfsm 2.38 In. 32.40

Water year 1956-57: Max 4,540 Min 93 Mean 567 Cfsm 1.47 In. 19.91

Peak discharge (base, 8,700 cfs). No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 24 to Dec. 7, Dec. 10-14, Dec. 20 to Mar. 15.
SAGO RIVER BASIN

Ossipee River at Effingham Falls, N. H.

Location. Lat 43°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 1957.

Gage. Water-stage recorder. Altitude of gage is 390 ft (from topographic map).

Average discharge. 15 years, 726 cfs.

Extremes.--Maximum discharge during year, 1,160 cfs Apr. 10 (gage height, 4.63 ft); minimum, 91 cfs Sept. 17-23; minimum daily, 91 cfs Sept. 19-22.

1942-57: 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. Flow regulated by Ossipee and Silver Lakes and Pine River 

Pond" (combined capacity, 1,430,000,000 cu ft).

Rating table, water year 1956-57 (gage height, in feet, and 

discharge, in cubic feet per second)

1.5 

2.0 

2.5

160

266

3.0 

4.0 

5.0

420

840

1,380

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

507 503"

495

487 

479

475

475

483

487

487

487

487

483

479

475

475

467

463

459

455

455

455

455 

463

471

475

479

479

479 

479

479

14,777

477

-

-

Nov.

479

479

479

475 

475

471

*467

463

459

455

448

444

441

438

438

434

427

424

420

420

416

427

444 

455

463

467

471

471

471 

475

13,596

453

-

-

Dec.

471

467

463

459

455

455

*455

459

475

483

491

499

511

519

527

535

543

551

555

559

551

722

890 

880

875

865

732

591

583 

535

535

17,691

571

-

-

Jan.

531

527

715

831 

813

795

782

764

746

732

714

696

674

646

615

599

583

555

527

503

487

471

503 

503

444

271

282

284

421

535

535

18,084

583

-

-

Feb.

535

535

718

1,020 

985

945

920

885

845

860

*826

777

723

669

624

579

547

507

467

438

410

388

378 

362

352

349

42T

583

17,654

630

_

-

Mar.

736

786

790

777 

759

732

705

682

674

687

696

705

696

692

692

723

768

786

795

790

786

*782

786 

800

804

813

808

804

804 

800

710

23,368

754

-

-

Apr.

624

646

750

634 

507

555

646

882

1,040

1,060

875

620

531

543

547

555

611

818

855

860

840

930

1,100 

1,080

1,060

774

595

523

424

ToT 4c4

21,909

730

_

-

May

424

471

523

519 

413

359

359

359

352

318

244

244

247

247

424

531

531

523

370

417

563

821

1,050 

860

620

519

519

591

710

465 2 82

14,855

479

-

-

June

338

515

515

*482 

284

284

284

284

284

284

284

284

284

284

282

207

158

158

160

160

160

160

162 

162

191

362

362

365

378 

459

8,576

286

-

-

Jily

455

434

*359

313

151

295

318

402

406

571

723

754

459

312

254

252

252

252

231

151

153

153

153 

151

151

151

151

153

153

151

151

9,015

291

-

-

Aug.

151

IBT

151

151 

151

151

151

151

151

151

151

151

151

151

151

151

151

189

233

233

233

298 m-346

343

340

333

330 

324

321

6,794

219

-

-

Sept.

318

312

309

306 

304

301

295

292

287

282

279

274

269

261

249

229

188

92

91

9T

91

91

*92 

92

92

92

92

92

92 

92

5,947

198

-

-

Calendar year 1956 : Max 3,520 Min 235 Mean 735 Cfsm 2.23 In. 30.34

Water year 1956-57 : Max 1,100 Min 91 Mean 472 Cfsm 1.43 In. 19.41

Discharge measurement made on this day.
3ACO 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 in Cornish, York County, l£ miles upstream from mouth.

Drainage area.--453 sq mi.

Records available.--July 1916 to September 1957.

Gage. Water-stage recorder. Datum of gage is 276.1 ft above mean sea level, datum of 

T929. 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.

Average discharge.--41 years, 874 cfs.

Extremes. Maximum discharge during year, 1,370 cfs Apr. 11 (gage height, 3.92 ft); maximum 

gage height, 4.21 ft Feb. 5 (backwater from ice); minimum discharge, 48 cfs July 21, 

Aug. 17 (gage height, 0.77 ft); minimum daily, 110 cfs Sept. 20.

1916-57: 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 period of ice effect, which are fair. Flow 

partly regulated by powerplants at Kezar Falls and by Ossipee and Silver Lakes, Pine 

River, Bickford and Colcord Ponds (combined capacity, 1,600,000,000 cu ft).

Revisions (water years).--WSP 756: Drainage area. WSP 1301: 1917-29(M).

Rating table, water year 1956-57, except period of ice effect (gage 

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

1.1 

1.3 

1.5

135

182

2.0 

3.0 

3.9

338

810

1,360

Discharge, in cubic feet per second, water year October 1.956 to September 1957

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

25

26

27 

28

29 

30

31

Total

Mean

Cfsm

In.

Oct.

550

536

536

515

505

500

635

603

550

536

522

513 

504

504

509

500

500

491

487

474

474

487

522

613

550

545

536 

532

536 

522

513

16,300

526

_

-

Nov.

532

532

550

504

513

504

500

495

495

478

474

491 

495

491

465

474

457

470

470

460

470

"SzS 684

555

541

579

569 

564

560 

550

15,550

518

-

Dec.

527

522

532

513

522

522

555

603

623

603

598

711 

766

728

690

716

733

711

690

675

665

670

920

950

920

920

*920 

730

700 

605

615

21,125

681

_

-

Jan.

650

645

735

955

950

940

920

890

880

865

845

820 

805

780

755

730

700

680

650

625

590

560

810

1,090

865

700

610 

525

490 

*630

710

23,400

755

_

-

Feb.

690

675

665

1,040

1,100

1,060

1,020

980

950

940

960

905 

865

810

750

700

665

635

600

575

555

535

505

490

485

*495

730 

1,030

-

21,410

765

_

-

Mar.

980

925

885

855

840

810

790

780

855

986

920

882 

865

892

909

944

1,010

1,000

974

962

950

986

1.010

1,010

986

974

974 

968

962 

944

904

28,732

927

_

-

Apr.

788

909

1,030

932

738

854

968

1,020

1,220

1,220

1.520

1,040 

848

804

788

766

766

904

968

962

968

986

1,110

1,110

1,090

1,010

706 

684

555

532

27,596

920

^

-

May

532

522

588

584

560

*432

440

432

419

415

386

315 

358

394

427

618

608

584

584

457

766

821

962

1,030

887

664

608 

608

658

750

550

17,959

579

_

-

June

374

378

584

579

560

407

366

362

362

350

354

350 

342

338

330

346

308

225

196

220

230

221

198

194

210

225

450 

522

491

453

10,525

351

_

-

July

491

504

487

427

440

319

304

370

432

465

*603

ISO. 

608

432

338

275

273

265

270

230

170

198

182

180

188

182

170 

188

225

220

196

10,382

335

_

-

Auf.

190

172

168

172

200

180

174

178

168

162

190

198 

162

164

164

166

152

144

235

240

255

240

362

350

346

362

366 

338

350

350

334

7,232

233

_

-

Sept.

323

338

366

334

338

346

350

323

*350

315

330

323 

323

304

290

283

254

210

120

110

124

117

129

135

131

129

129 

129

127

119

7,199

240

-

-

Calendar year 1956 : Max 4,420 Min 260 Mean 884 Cfsm 1.95 In. 26.55

Water year 1956-57 : Max 1,320 Min 110 Mean 568 Cfsm 1.25 In. 17.01

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 19 to Mar. 9.
70 SACO RIVER BASIN

Saco 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 1957.

Gage. Water-stage recorder. Datum of gage is 263.48 ft above mean sea level, datum of 

1929. Prior to Oct. 30, 1919, chain gage on bridge Just downstream at different datum.

Average discharge.--41 years, 2,691 cfs.

Extremes. Maximum discharge during year, 4,550 cfs Apr. 24 (gage height, 5.79 ft); maximum gage height, 6.52 ft Jan. 25 (ice Jam); minimum discharge, 149 cf3 Aug. 10 (gage 

height, 1.13 ft).

1916-57: 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 period 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 table, water year 1956-57, except period of Ice effect (ga?e 

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

1.7 

2.1 

2.5 

3.0

303

455

656

973

4.0 

5.0 

5.7

1,930

3,240

4,390

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1 

2

5

4

5

6

7

8

9

10

11

12

15

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29 

30

31

Total

Mean

Cfsm

In.

Oct.

2,150 

1,980

1,890

1,750

1,690

1,570

1,610

1,840

2,170

2.180

2,170

2,110

2,010

1,950

1,880

1,800

1,720

1,680

1,590

1,520

1,470

1.460

1,500

1,690

1,840

1,970

1,980

1,910

1,850

1,800

1,720

56,450

1,820

-

-

Nov.

1,710 

1,690

1,730

1,750

1,750

1,710

1,720

1,750

1,750

1,710

1,660

1,710

1,720

1,700

1,640

1,580

1,490

1,460

1,440

1,590

1,410

1,840

2,170

2.270

2,170

2,180

2,160

2,130

2,070

2 ,000

53,460

1,782

_

-

Dec.

1,850 

1,780

1,670

1,510

1,580

1,660

1,790

1,910

2,050

2,100

2,070

2,370

2,450

2,420

2,580

2,570

2,420

2.450

2,540

2,420

2,240

2,180

2,500

2,240

2,290

2,190

*1,990

1,550

1,470

1,440

1.410

62,870

2,028

_

-

Jan.

1,400 

1,450

1,660

1,840

1,820

1,800

1,810

1,790

1,750

1,690

1,670

1,610

1,550

1,500

1,420

1,390

1,380

1,550

1,290

1,250

1.240

1,250

1,930

2,600

2.980

2,950

2,740

2,420

2,280

*2 , 30C

2,270

56,360

1,818

-

Feb.

2,170 

2,100

2,040

2,280

2.290

2,230

2,170

2,090

2,010

1,980

1,950

1,890

1,820

1,780

1,750

1,710

1,660

1,600

1,550

1,510

1,460

1,440

1,420

1,410

1,400

*1,440

1,590

2,110

50,830

1,815

-

Calendar year 1956: Max 11,500 Min 491

Mar.

5.690 

5,680

3,500

3,300

3,090

2,870

2,740

2.720

2,780

2,920

2,850

2,820

2,760

2,800

*2,840

2,940

3,060

3,090

3,060

2,960

2,880

2,880

2,920

2,940

2,950

2,950

2,950

2,940

2,890

2,850

2 , 800

92,420

2,981

-

Apr.

2.670 

2,810

5,050

5,050

2,880

5,050

5,058)

5,270

5,500

3,470

5,550

3,210

2,960

2,890

2,870

2,810

2,760

2,680

2,890

2,960

5,100

3,420

3,940

4,300

4.540

4,320

4,020

3,870

3,610

5,500

98,760

5,292

-

May

5.550 

3,150

2,890

2,770

2,620

*2,340

2,070

1,990

1,890

1,850

1,760

1.620

1,670

1,700

1,850

2,160

2,210

2,240

2,170

2,070

2,670

2,740

3,100

5,030

2,870

2,520

2,410

2,420

2,510

2,360

2,090

73,070

2,357

_

-

June

1,860 

1,860

1,920

1,830

1,730

1,500

1,440

1,580

1,540

1,560

1,240

1,170

1,150

1,060

913

913

878

747

753

800

788

747

655

685

590

940

1,110

1,110

1,090

1,050

54,589

1,153

_

-

July

1,260 

1,240

,180

,100

,070

,060

,320

,430

1,410

1,400

*1,540

JL640

1,470

1,150

988

885

858

831

794

602

540

618

586

550

613

607

602

581

724

782

747

30,158

973

-

Aug.

815 

800

735

675

758

712

695

651

592

415

571

571

445

478

455

500

356 375"

430

540

468

451

550

555

510

571

571

540

545

540

525

17,589

561

-

Sept.

482 

555

555" 566

545

540

550

515

550

550

545

540

540

520

510

496

468

414

545

534

542

510

549

542

558

534

358

354

505

15,578

446

_

-

Mean 2,757 Cfsm 2.12 In. 28.89

Water year 1956-57: Max 4.54O Min 305 Mean 1,755 Cfsm 1.55 In. 18.52

* Discharge measurement made on this day.

Mote.--Stage-discharge relation affected by Ice Dec. 25 to Mar. 7.
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 highway bridge, 

2 miles southeast of South Limington, York County, and 4 miles upstream froir mouth.

Drainage area. 161 sq mi.

Records available.--August 1940 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 260 ft (from topographic map).

Average discharge. 17 years, 292 cfs.

Extremes. Maximum discharge during year, 628 cfs Mar. 1 (gage height, 3.20 ft); minimum 

daily, 52 cfs Aug. 31 to Sept. 6.

1940-57: Maximum discharge, 5,300 cfs May 10, 1954 (gage height, 6.78 ft); 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 excellent except those for periods of Ice effect, which are fair. Flow 

regulated by Little Ossipee Lake, Ledgmere and Balch Ponds (combined capacity, 

581,000,000 cu ft).

Rating table, water year 1956-57, except periods of ice effect (gage 

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

1.7

1.8 

2.0

58

104

2.5 

3.0 

3.2

269

509

628

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

199

199

195

195

195

195

195

*195

195

195

195

192

192

192

192

192

188

188

185

18_5_

185

185

192

199

199

199

195

195

195

195

195

5,993

193

-

-

Nov.

195

192

192

192

188

188

188

188

188

188

185

182

182

182

178

178

175

175

172

169

169

185

185

185

185

185

188

220

3JL9 

314

5,812

194

-

-

Dec.

310

298

290

220

170

162

162

169

175

175

175

185

192

199

200

202

202

202

200

202

202

202

205

206

206

209

209

209

209 

215

215

6,377

206

-

-

Jan.

220

225

230

225

224

224

224

224

220

213

215

213

209

215

224

227

239

239

239

239

239

246

290

290

300

325

395

385

*375

355

8,068

260

-

-

Feb.

337

328

325

319

319

320

320

314

315

314

315

315

315

310

310

305

302

298

294

295

295

290

285

275

273

269

302

520

-

8,779

314

-

-

Mar.

604

482

400

335

305

295

290

285

302

460

471

429

384

393

450

493

544

544

504

429

384

389

419

419

389

369

384

324

314 

306

298

12,394

400

-

-

Apr.

290

310

384

379

355

455

555

498

450

419

424

424

413

369

265

129

129

126

126

124

121

115

115

115

115

112

112

112

112 

112

7,765

259

-

-

May

110

110

110

110

110

110

112

115

115

112

112

112

126

126

285

319

215

159

156

215

365

389

365

270

206

202

202

156

121 

118

118

5,451

176

-

-

June

118

121

118

89

66

68

68

66

66

66

66

66

68

71

86

86

79

71

99

92

89

84

77

73

138

220

199

175

144 

138

2,969

99.0

-

-

July

He- 126

lie

ne

121

lie

118

115

79

62

62

*62

64

66

66

64

62

62

62

62

62

60

60

60

60

60

58

56

60 

60

60

2,363

76.9

-

Aug.

56

56

56

56

58

56

56

56

56

56

56

56

56

56

56

56

56

55

55

55

55

55

55

55

55

55

55

53

53

53

12

1,717

55.4

-

-

Sept.

52

52

52

52

52

52

53

55

53

53

53

53

53

53

53

53

55

55

55

55

55

56

58

58

56

58

58

58

58 

58

1,637

54.6

-

-

Calendar year 1956: Max 2,240 Min 28 Mean 313 Cfsm - In. -

Water year 1956-57: Max 604 Min 52 Mean 19O Cfsm - In. -

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Dec. 5, 15, 19, 23, Dec. 30 to Jan. 4, Jan. 

24-31, Feb. 3, 6, 7, 9, 11-13, 16, 20-22, 24, 28, Mar. 3-7.

11, 14,
MOUSAM RIVER BASIN 

Mousam River near West Kennebunk, Maine

Location. Lat 43 0 25'05", long 70°39'35" , on right bank 100 ft upstream from highway 

bridge, 1-g- 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 1957.

Gage. Water-stage recorder. Altitude of gage is 170 ft (from topographic map).

Average discharge. 18 years, 180 cfs (unadjusted).

Extremes.--Maximum discharge during year, 1,000 cfs Dec. 1 (gage height, 3.19 ft); minimum, 9.5 cfs Sept. 29, 30 (gage height, 0.47 ft).

1939-57: 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. Flow regulated by Square Pond and Mousam and Estes Lakes (combined capacity, about 700,000,000 cu ft) and powerplants above station.

Rating table, water year 1956-57 (gage height, in feet, and disctarge, 

in cubic feet per second)

6.1

11

ie

28

o.e 

i.o

1.5 

2.1

40

73

216

454

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

59

59

60

49

54

42

41

*98

28

28

27

27

39

48

110

36

*38

52

48

33

48

198

205

198

200

196

82

48

132

90

205

2,578

83.2

+8.2

Nov.

200

192

83

41

115

53

59

60

68

50

27

46

57

56

59

62

44

39

64

*59

60

134

212

142

102

202

245

241

206

230

3,208

107

+12.0

Dec.

210

365

178

151

139

136

139

161

227

209

181

298

370

345

267

290

263

267

230

223

*209

188

184

206

245

267

227

209

202

171

171

6,928

223

+24.1

Jan.

174

171

138

171

148

131

168

151

155

136

134

112

122

158

148

145

139

125

69

49

119

142

345

441

374

317

279

260

241

209

202

5,673

183

+16.2

Feb.

202

171

188

195

181

174

171

168

158

198

202

174

164

158

142

128

145

151

142

139

131

131

114

122

142

151

404

441

-

4,987

178

-5.4

Mar.

362

294

263

238

209

192

T92

192

321

J99

337

294

263

*298

321

354

387

354

317

306

290

302

298

298

279

267

252

245

230

227

223

8,804

284

+18.7

Apr.

212

267

286

241

279

412

¥62

306

317

294

302

294

263

241

227

212

202

192

188

181

174

148

139

119

116

128

122

122

119

119

6,584

219

+9.3

May

116

106

96

88

92

114

*108

92

84

84

69

81

114

76

162

136

119

106

96

139

230

202

171

139

109

99

104

114

90

84

81

3,501

113

-2.8

June

79

90

86

81

75

79

94

77

69

68

66

66

60

62

66

62

57

55

88

96,

66

60

59

55

73

84

79

75

75

66

2,168

72.3

-26.6

Jily

66

49

48

60

66

62

50

49

SO

66

44

*46

44

46

49

46

43

40

42

40

35

39

44

36

36

39

29

29

35

60

34

1,422

4519

-28.9

Aug.

34

30

30

30

49

33

58

68

13

14

22

65

50

42

53

16

14

26

77

li

37

29

54

15

15

64

39

65

53

13

12

1,214

39.2

-32.1

Sept.

12

34

90

79

14

14

14

18

77

104

56

14

14

14

14

37

99

56

14

14

14

15

15

40

68

68

79

36

9,5

9 5

____

1,142.0

38.1

-21.7

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

91.4

0.870 

1.00

US 

1.13 

1.26

Calendar year 1956! 

Water year 1956-57:

247 

2.35 

2.71

199 

1.90 

2.19

173

1.65 

1.72

303 

2.89 

3.33

228 

2.17

2.42

110 

1.05 

1.21

Observed

Max 1,300 Mln 16 Mean 206 

Max 441 Mln -9.5 Mean 132

45.7 

0.435 

0.49

17.0 

0.162 

0.19

7.1 

0.068 

O'.OS

Adjusted

16.4 

0.156 

0.17

Mean 207 Cfrm 1-97 In. 26.92 

Mean 130 cfnn 1-24 in. 16.77

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Square Pond 

Lakes.

nd Mousam and Estes
PI3CATAQUA RIVER BASIN 73 

Salmon Palls River near South Lebanon, Maine

Location. Lab 43°19 I 40", long 70°55'40", on left bank at Stair Falls, ij miles south of 

South Lebanon, York County, and 2j miles upstream from Little River.

Drainage area. 147 sq mi.

Records available. November 1928 to September 1957.

Gage. Water-stage recorder. Datum of gage is 179.60 ft above mean sea level, datum of 

1929.

Average discharge. 28 years (1929-57), 239 cfs (unadjusted).

Extremes. Maximum discharge during year, 971 cfs Jan. 23 (gage height, 3.56 ft); minimum, 

20 cfs Aug 18 (gage height, 1.28 ft).

1928-57: 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, whict are fair. 

Plow partly regulated by powerplants above station and by Great East and Lovell Lakes 

and Horn, Wilsons, and Milton Ponds (also controlled Northeast and Town House Ponds), 

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 1956-57 (gage height, in feet, and 

discharge, in cubic feet per second)

70

119

2.0 

2.5 

3.0 

3.2

187

400

655

765

Discharge, in cubic feet per second, water year October 1956 to September 19f7

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.

66

156

102

100

100

40

40

*132

176

120

106

106

48

48

122

110

108

92

110

59

50

95

126

245

148

132

92

35

116

102

106

3,188

103

+1.7

Nov.

122

124

77

30

1ZO

110

120

100

106

68

27

110

132

122

114

106

66

44

116

*110

114

162

114

44

90

134

215

200

162

140

3,299

110

+51.3

Dec.

100

38

140

148

124

122

176

132

102

154

191

276

364

574

500

450

432

427

409

396

*368

310

141

191

22Z

342

324

314

267

173

206

8,113

26Z

+37.2

Jan.

183

350

301

350

280

206

404

418

404

404

391

297

173

378

364

382

386

382

364

490

480

485

732

726

606

547

537

432

*436

427

436

12,751

411

-106

Feb.

427

414

418

400

396

427

404

391

373

378

386

409

400

346

332

337

310

319

310

346

337

297

284

271

271

288

638

552

10,461

374

-127

Mar.

432

391

382

368

373

346

328

314

400

456

373

350

342

382

404

436

436

409

382

373

364

378

373

378

360

337

293

297

288

293

284

11,302

365

+45.5

Apr.

284

314

324

267

284

409

T95

251

259

263

284

271

222

158

246

203

195

203

203

155

85

129

158

203

218

214

187

79

158

183

6,604

220

+102

May

158

151

125

111

3_2

83

*106

70

74

70

46

36

97

151

125

173

114

49

37

108

195

145

100

95

44

68

81

90

85

50

66

2,935

94.7

+43.0

June

36

32

77

85

79

77

83

46

33

70

74

74

65

63

42

22

63

72

56

97

68

32

21

49

108

74

77

74

36

22

1,807

60.2

-25.6

July

50

100

73

76

45

34

22

170

108

72

75

*35

31

57

72

56

70

72

31

32

40

170

164

134

132

59

24

35

170

140

95

2,444

78.8

-62.5

Aug.

70

43

22

48

79

70

68

38

38

29

36

110

72

88

42

50

38

23

97

81

68

56

22

40

37

97

72

66

36

33

120

1,789

57.7

-69.3

Sept.

48

22

85

150

150

70

88

40

*114

106

97

66

37

90

30

95

83

83

68

30

68

30

85

90

79

63

22

43

25

66

2,123

70.8

-79.2

Adjusted for change in reservoir contentstt

Mean 

Cfsm 

In.

105 

0. 714 

0.82

161 

1.10 

1.23

Calendar year 1956: 

Water year 1956-57:

299 

2.03 

2.34

305 

2.07 

2.39

247 

1.68 

1.75

410 

2.79 

3.22

322 

2.19 

2.44

138 

0.939 

1.07

Observed

Max 2,050 Mln 22 Mean 271 

Max 732 Mln 21 Mean 183

34.6 

0.235

0.26

16.3 

0.111 

0.13

-11.6 

-0.079 

-0.09

Adjusted

-8.4 

-0.006 

-0.01

Mean 288 cfsm 1.96 ln. 26.66 

Mean 168 Cfsm 1.14 In. 15.55

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Great East and Lovell Lakes, and 

Horn, Wilson, and Milton Ponds (controls also Northeast and Town House Ponds).

tt Negative figures of adjusted discharge and runoff Indicate that evaporation and seepage 

exceeded inflow.

Note. No gage-height record Oct. 4-8, July 1-12; discharge estimated on basis of recorded range 

In stage, 2 discharge measurements, weather records, and flow of nearby streams.

505692 O-59-6
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 f-om bridge on U. S. 

Highway 4, Z\ miles west of Durham, Strafford County, and 7 miles upstream from mouth.

Drainage area. 12.1 sq mi.

Records available . October 1934 to September 1957. 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. 23 years, 19.4 cfs.

Extremes. Maximum discharge during year, 91 cfs Feb. 27 (gage height, 1.63 ft); minimum, 

0.50 cfs Aug. 4, 7, 9, 10, Sept. 6,7.

1934-57: 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, which are fair.

Rating table, water year 1956-57, except periods of ice effect (gage 

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

0.03 

.1 

.2

0.50

1.1

2.35

4.1

0.5

.7

1.0

1.4

9.5

18

36

Discharge, in cubic feet per second, water year October 1956 to Septen-ber 1957

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.

1.8

 1.8

iff

2.1

2.0

8.4

6.0

3.9

3.0

2.5

2.35

2.25

2.2

2.2

2.1

2.05 

2.0

1.9

1.8

1.75

1.75

14

15

*7.2

5.0

4.6

4.1

3.8

3.6

3.5

116.05

3.81

0.315

0.36

Nov.

3.7

3.7

3.4

3.2

3.0

3.0

2.8

2.8

3.6

3.2

2.7

3.2

4.3

3.9

3.6

3.4

3.3 

3.6

3.7

3.4

5.1

26

14

8.8

7.2

38

*40

19

15

266.6

8.89

O.735

0.82

Dec.

13

12

9.8

10

9.5

9.6

11

14

12

12

13

33

41

34

20

29

33 

28

22

19

16

18

17

18

27

25

22

20

18

15

16

596.9

19.3

1.60

1.84

Jan.

15

14

13

14

14

13

13

12

12

12

11

11

11

10

10

9.8

9.6 

9.4

9.2

8.8

9.0

10

so

54

46

36

30

27

24

22

19

558.8

18.0

1.49

1.72

Feb.

18

17

14

16

16

16

15

14

13

20

21

16

14

13

12

12

12 

12

12

12

11

10

11

12

13

19

60

60

-

***

,._

491

17.5

1.45

1.51

Mar.

46

36

32

26

22

20

19

19

45

51

39

36

33

38

41

52

50 

42

*36

33

30

31

30

27

24

"&

21

21

19

20

21

982

31.7

2.62

3.02

Apr.

20

30

32

25

30

54

42

33

33

36

35

30

28

24

21

19

18 

17

16

15

14

12

12

*11

n

1111

10

9.8

9.8

669.6

22.3

1.84

2.O6

May

9.0

8.3

7.8

7.7

7.2

6.8

6.4

5.8

5.4

5.3

7.8

9.O

8.8

7.8

12

12

8.8 

7.7

7.0

13

25

17

12

10

8.2

7.1

7.2

7.8

6.3

5.4

4.6

274.4

8.85

0.731

0.84

June

4.3

5.0

6^0

4.8

4.2

3.7

4.7

4.2

3.3

2.8

2.6

2.5

2.2

2.05

2.O

1.75

1.5 

1.3

2.0

2.8

*2.0

3rr65

1.45

1.2

T735

1.6

1.8

1.6

1.65

1.8

8O.OO

2.67

0.221

0.25

July

1.85

1.25

1.05

1.55

1.6

1.8

1.45

£.2

T76"5

1.45

1.1

1.0

.92

.92

.83

.79

7§3 

.63

.87 '.87

.87

.92

1.0

.92

1.0

1.0

1.0

1.1

1.O5

1.35

 1.8

3f .82

1.19

O.098

0.11

Aug.

0.92

.70

.58

.62

.75

.56

.54

.58

.50

.66

1.05

1.1

. 75

.66

.70

.75

.66 

.54

.54

.62

.70

.62

.58

.54

.66

.83

.75

.62

.62

.70

* 66

21.06

0.68O

0.056

0.06

Sept.

0.58

.62

.63

.66

.58

.50

75o

.58

*.58

.58

.70

.75

.70

.66

.62

.75

t#

.66

.62

.62

.66

.79

.75

.62

.62

.58

.58

.58

.54

---- 

19.43

O.648

0.054

O.O6

Calendar year 1956: Max 29O Min 0.97 Mean 23. O Cfsm 1.90 In. 25.86

Water year 1956-57: Max 6O Min O.50 Mean 11.3 Cfsm 0.934 In. 12.65

Peak discharge (base, 17O cfs). No peak above base.

* Discharge measurement made on this day.

Kote. Stage-discharge relation affected by ice Dec. 19 to Jan. 23, Feb. 2-15, 26, 27.
PISCATAQUA RIVER BASIN 75

Lamprey River near Newmarket, H. H.

Location. Lat 43°06'05", long 70°57'20", on right bank 200 ft upstream from Paikers Palls, 

2 miles northwest of Newmarket, Rockingham County, and 4.6 miles upstream fnm mouth.

Drainage area. 183 sq mi.

Records available. July 1934 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 40 ft (from topographic map).

Average discharge. 23 years, 280 cfs.

Extremes. Maximum discharge during year, 676 cfs Mar. 1 (gage height, 4.07 ft); minimum 

daily, 2.4 cfs Aug. 29.

1934-57: 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 flow 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 tho^e for

periods-of ice effect, which are fair. Plow regulated by Pawtuckaway and Mendums Ponds 

(combined capacity, about 600,000,000 ou ft).

Revisions (water years). WSP 1231: 1936-37.

Rating table, water year 1956-57, except periods of ice effect (gage

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

(Backwater from beaver dam Aug. 10 to Sept. 13; shifting-control

method used Sept. 13-30)

0.02 

.05 

.1 

.3 

.5 

.7 

.9

2.4

2.6

3.1

5.6

9.2

15

26

1.2 

1.5 

2.0 

3.0

53

92

176

382

655

685

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Cfam

In.

Oct.

21 

19

18

15

IS

16

32

51

38

33

32

30

28

26

25

24

22

22

20

19

19

19

45

115

*75

68

61 

53

46

42

38

1,088

35.1

0.192

0.22

Nov.

38 

38

37

34

33

32

30

31

33

32

28

29

35

38

38

37

36

46

54

52

55

162

167

156

130

238

 300 

240

205

181

2,565

85.5

0.467

0.52

Dec.

144 

133

115

102

T36

109

106

120

128

123

140

244

328

382

260

372

T7o~ 390

295

285

282

272

248

254

305

305

305

311

292

217

190

7,233

233

1.27

1.47

Jan.

200 

190

190

200

200

185

180

180

180

180

175

170

165

155

150

150

145

142

140

135

135

145

400

500

566

625

'581) 

513

439

382

342

8,048

260

1.42

1.64

Feb.

317 

296

278

276

278

266

252

238

228

260

28S

272

252

228

209

196

189

183

*181

180

167

163

160

165

172

200

400 

540

 

6,834

244

1.33

1.39

Mar.

670 646"

558

454

380

335

311

298

442

546

535

510

449

452

488

589

640

628

*572

513

473

454

439

424

401

377

340 

298

280

276

292

14,070

454

2.48

2.86

Apr.

300 

324

372

363

377

530

546

 510- 549

507

510

478

457

418

377

342

317

300

286

270

256

236

221

*198

169

158

153 

149

144

137

9,954

332

1.81

2.02

May

126 

117

107

101

95

89

85

81

75

70

84

100

120

118

128

154

137

128

115

124

236

217

198

167

132

109

98 

 100

95

98

95

3,699

119

0.650

0.75

June

81 

75

77

73

70

65

65

63

57

51

47

42

38

37

34

30

28

26

28

44

34

28

25

22

Si

24

26 

26

24

25

1,286

42.9

0.234

0.26

July

4t15

15

16

17

17

16

16

16

15

15

15

14

15

13

13

12

12

12

14

11

11

10

10

10

10 

10

11

12

*13

439

14.2

0.078

0.09

Aug.

15 

15

14

14

12

11

11

10

10

9.4

9.2

9.2

9.2

10

9.7

9.2

8.8

8.4

8.0

7.2

7.4

6.7

6.1

5.2

4.8

5.0

5.9 

7.0

2^4

3.0

3.4

267.2

8.62

0.047

0.05

Sept.

fri 3.0

3.2

3.4

3.5

3.6

3.6

3.5

3.4

3.6

3.4

*3.3

3.2

3.1

3.2

3.3

3.5

3.4

3.5

3.6

3.9

1=1

3.8

3.6

3.6

3.5 

3.6

3.6

3.5

103.1

3.44

0.019

0.02

Calendar year 1956: Max 2,870 Min 9.7 Mean 306 Cfsm 1.67 In. 22.75

Water year 1956-57: Max 670 Min 2.4 Mean 152 Cfsm 0.831 In. 11.29

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 17, 19, 20, 26, Dec. 13 to Jan. 2*, 

Feb. 26-28. 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 mi.

Records available.--October 1939 to September 1957.

Gage.--Water-stage recorder. Altitude of gage is 615 ft (from topographic map).

Average discharge.--18 years, 515 cfs.

Extremes. Maximum discharge during year, 5,240 cfs Apr. 21 (gage height, 7.33 ft); minimum daily, 62 cfs Sept. 1, 15.

1939-57: 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 above station.

Rating tables, water year 1956-57, except periods of ice effect (gage

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

(Shifting-control method used Jan. 30 to Feb. 26, Mar. 3-15,

18-22, Mar. £5 to Apr. 1, 10-12, 15, 16)

Oct. 1 to Apr. 21 Apr. 22 to Sept. 30

2.6 

3.0 

3.5 

4.0

134

259

495

825

5.0 

6.0 

7.0

1,710

2,850

4,550

2.2

2.6 

3.0 

3.5

61

134

259

474

4.0 

5.0 

6.0

755

1,540

2,790

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

31

Total

Mean

Cfsm

In.

Oct.

325

303

317

279

275

245

1.510

996

581

446

385

348

321

303

279

263

248

237

220

210

203

200

206

325

241

210

200

190

184

*175

172

10,197

329

1.70

1.96

Nov.

464

574

371

303

267

245

230

223

216

203

182

203

271

230

216

259

287

255

216

197

263

2.220

860

507

400

420

395

352

325

11,453

382

1.98

2.21

Dec.

252

263

234

*263

230

252

332

'507 699

390

330

425

440

366

343

395

484

385

252

348

317

291

275

279

317

259

200

275

260

190 

180

10,033

324

1.68

1.93

Jan.

210

205

200

230

200

185

180

*180

170

175

165

170

165

160

155

a!55

aieo

a!60

a!55

alSO

155

185

2.500

1,320

790

633

484

446

415

357

312

11,127

359

1.86

2.14

Feb.

28O

270

260

270

250

235

225

215

200

215

190

180

175

*170

170

165

165

165

160

160

155

155

160

155

155

240

1.900

968

_

8,008

286

1.48

1.54

Mar.

626

490

390

325

303

303

291

279

a 300

a330

a290

283

267

291

334

462

451

371

*321

321

330

395

456

456

400

385

381

371

395

405 

385

11,387

367

1.90

2.19

Apr.

381

944

949

562

468

550

685

513

451

395

390

410

588

446

581

381

462

562

818

1,340

lilZO

2,330

*1,700

*1,860

1,500

1,150

1,470

1,400

1,120

1,210

29,186

975

5.04

5.62

May

841

677

574

505

455

418

386

386

391

378

427

373

401

525

830

869

564

460

400

695

1.050

757

580

520

455

414

556

*469

427

373 

352

16,446

531

2.75

3.17

June

323

392

460

356

348

302

404

396

314

271

245

234

230

206

206

178

166

155

155

184

150

127

125

155

166

290

263

438

587

173

8,299

277

1.44

1.60

Jily

400

*325

245

821

1.450

999

550

391

449

945

569

456

352

302

306

263

257

205

178

166

150

194

275

181

157

142

152

137

251

392

210

11,766

580

1.97

2.27

Aug.

166

139

127

116

119

*110

106

104

99

101

121

200

Tl9

102

97

97

90

86

83

83

76

76

74

73

67.

72

76

73

68

68

3,056

98.6

0,511

0.59

Sept.

62

64

86

97

78

68

67

67

66

64

*66

68

66

66

62

^Z

112

79

67

67

70

73

466

204

110

97

86

79

76

73

2,778

92.6

0.480

0.54

Calendar year 1956: Max 4,440 Min 86 Mean 541 Cfsm 2.80 In. 38.12

Water year 1956-57: Max 3,770 Min 62 Mean 366 Cfsra 1.90 In. 25.76

Peak discharge (base, 7,100 cfs). No peak above base.

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for Pemigewasset River at Plymouth and Baker River near Rumney.

Note.--Stage-discharge relation affected by ice Dec. 27 to Jan. 23, Feb. 1-27.
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 Falls Brook 

and if miles southwest of Rumney, Grafton County.

Drainage area.--143 sq mi.

Records available. October 1928 to September 1957. October 1988 monthly dischfrge 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.--89 years, 257 cfs.

Extremes. Maximum discharge during year, 1,820 cfs Nov. 82 (gage height, 5.20 ft); minimum, 14 cfs Sept. 1, 2.

1988-57: Maximum discharge, 21,400 cfs June 15, 1942 (gage height, 15.50 ft), from 

rating curve extended above 3,800 cfs on basis of slope-area determinations ft gage 

heights 13.03, 14.49, and 15.50 ft; 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 1233: 1929- 

 33(M), 1934. ' 

Rating table, water year 1956-57, except periods of ice effect 

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

2.26

2.3

2.4 

2.7

3.0 

3.5 

4.0 

5.0

175

395

720

1,620

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

103

113

105

105

100

415

4l5

256

194

162

142

130

122

116

108

100

95

90

85

83

80

80

90

85

78

76

78

76 

*69

69

3,930

127

0.888

1.02

Nov.

137

205

142

119

105

97

92

87

83

78

72

78

133

133

116

113

116

113

103

95

122

1,150

524

320

236

232

216

197

168 

149

5,531

184

1.29

1.44

Dec.

110

133

113

*113

104

130

185

406

339

255

248

256

278

250

224

244

315

255

180

210

205

179

162

179

220

19O

130

180

170 

105

100

6,168

199

1.39

1.60

Jan.

115

110

105

125

110

100

97

*95

90

92

88

90

88

83

81

84

86

84

82

80

82

88

600

613

380

334

240

208

201 

172

149

4,952

160

1.12

1.29

Feb.

135

125

120

125

115

105

loo

94

90

100

88

76

78

*80

76

76

76

74

74

72

71

70

72

72

74

80

750

762

-

3,830

137

0.958

1.00

Mar.

498

375

287

220

182

168

158

152

168

201

155

155

149

186

256

450

434

320

*265

252

236

301

354

344

292

283

283

287

296 

301

276

8,286

267

1.87

2.15

Apr.

265

532

617

380

320

349

450

370

325

287

292

292

434

334

274

265

315

390

504

629

854

596

*434

406

349

301

306

283

252 

306

11,711

390

2.73

3.05

May

252

212

190

179

165

149

139

133

128

122

128

119

T30

172

254

274

197

165

142

360

-395 685

287

228

179

152

306

*244

194 

155

145

6,580

212

1.48

1.71

June

139

153

220

155

128

110

156

149

110

90

78

72

69

65

72

57

48

43

41

57

48

40

35

46

56

122

145

327

224 

179

3,234

108

0.755

0.84

July

130

*103

83

203

678

438

208

145

130

179

130

100

80

69

67

59

56

50

43

38

36

43

82

52

41

36

33

35

67 

95

69

3,578

115

0.804

0.93

Aug.

56

44

36

32

*30

29

27

25

24

24

52

46

40

30

27

27

26

24

22

20

19

18

18

17

16

16

18

18

17 

16

15

829

26.7

0.187

0.22

Sept.

15

14

20

29

25

20

18

18

17

16

16

*16

16

15

15

17

32

29

22

20

19

24

199

108

61

43

33

30

27 

26

960

32.0

0.224

0.25

Calendar year 1956: Max 3,280 Win 28 Mean 274 Cfsm 1.92 In. 26. O4

Water year 1956-57: Max 1,150 Min 14 Mean 163 Cfsm 1.14 In. 15.50

Peak discharge (base, 3,600 cfs).--No peak above base.

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Dec. 10, 14, 18-20, Dec. 25 to Jan. 23, Feb. 1-27 

(no gage-height record Jan. 17-21).
78 MERRIMACK RIVER SASIN

Pemigewasset River at Plymouth, N. H.

Location. --Lat 43°45'35", long 71°41'10", on right bank 150 ft downstream from bridge at 

Plymouth, Grafton County, and a third of a mile downstream from Baker River.

Drainage area. 622 sq ml.

Records available .--October 1903 to September 1957. Records for April 1886 to September 

1903, published In WSP 124, have been found to be unreliable and should not be used.

Gage. Water-stage recorder. Datum of gage Is 457.07 ft above mean sea level, datum of 

1929. Prior to Jan. 1, 1910, staff or chain gages at sites 150 and 200 ft upstream at 

present 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. 54 years, 1,358 cfs.

Extremes. Maximum discharge during year, 7,450 cfs Apr. 21; maximum gage height, 11.29 ft 

Jan. 23 (ice Jam); minimum discharge, 108 cfs Aug. 31; minimum dally, 114 cfs Aug. 30, 

31.

1903-57: Maximum discharge, 65,400 cfs Mar. 19, 1936 (gage height, 29.0 ft, from 

floodmarks), from rating curve extended above 33,000 cfs on basis of computations 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, which are fair. Some 

diurnal fluctuation caused by power-plants above 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 1956-57, except periods of ice effect (gage 

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

Oct. 1 to Apr. 21 Apr. 22 to Sept. 30

0.5 330 3.0 3,110 -0.1 99 2.0 1,820

.7 469 4.0 4,420 .2 207 3.0 3,120

1.0 700 5.0 5,730 .5 37O 4.0 4,420

2.0 1,740 1.0 79O 5.O 5,730

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

717 

660

676

636

636

589

2,100

2.740

1,490

1,130

951

839

768

717

676

628

605

558

536

506

491

476

491 

700

605

521

491

476

455 

*440

426

23,730

765

1.23

1.42

Nov.

644 

1,300

894

734

644

582

551

528

513

491

440

476

620

668

582

597

620

612

558

485

551

4.510

2,480 

1,400

1,050

1,100

1,020

913

795 

7?5

27,083

903

1.45

1.62

Dec.

575 

650

560

700

620

717

812

1.700

1,500

1,250

1,100

1,200

1,250

1,100

980

1,150

1,350

1,100

750

950

900

800

700 

750

920

800

*580

820

750

470

28,004

903

1.45

1.67

Jan.

520 

500

480

560

5OO

450

430

430

400

420

390

4OO

390

370

350

360

370

360

350

540

360

400

1,700 

3.700

2.OOO

1,600

1,300

1,000

930 

840

750

22,950

740

1.19

1.37

Feb.

660 

600

560

580

540

500

460

430

410

450

4OO

360

350

350

340

340

330

330

330

320

320

310

320 

320

330

350

2,200

5.000

-

15,790

564

0.907

0.94

Mar.

2.000 

1,600

1,200

1,000

840

760

740

720

780

860

690

660

640

720

960

1,700

1,900

1,400

1,150

1,050

980

1,150

1,360 

1,360

1,170

1,110

1,100

1,080

1,120

1,130

1,060

33,990

1,096

1.76

2.03

Apr.

*1.010 

1,910

2,930

1,610

1,370

1,480

2,030

1,580

1,390

1,180

1,190

1,150

1,640

1,360

1,120

1,070

1,240

1,460

1,840

2,610

5.540

4,960

*3,110 

3,120

2,760

2,040

2,310

2,310

1,960

2,040

61,120

2,037

3.27

3.65

May

1,680 

1,4OO

1,250

1,150

1,050

979

916

880

853

826

880

835

817

1,080

1,480

1,760

1,290

1,070

934

1,320

5.060

1,910

1,460

1,250

1,070

961

1,270

*1,250

1,060 

916

844

37,501

1,210

1.95

2.24

June

790 

772

1,100

862

781

691

790

916

718

610

538

504

504

496

496

426

377

370

352

433

384

316

294 

316

391

*619

808

1.O9O

1,260 

1.310

19,314

644

1.04

1.15

July

898 

763

592

1,210

2,800

2.890

1,400

1,020

889

1,430

1,140

889

727

619

583

529

480

426

377

346

334

346

512 

412

370

328

299

299

*456 

752

556

24,672

796

1.28

1.48

Aug.

412 

346

299

277

266

250

236

221

212

245

288

340

299

236

217

221

212

190

178

169

161

154

151 

147

140

140

*147

154

173

114

114

6,709

216

0.347

0.40

Sept.

123 

117

147

194

173

147

136

129

126

*120

123

126

126

123

120

129

186

208

154

136

133

147

601 

630

322

241

203

182

165 

*158

5,625

188

0.302

0.34

Calendar year 1956: Max 13,700 Mln 181 Mean 1,397 Cfsm 2.25 In. 30.56

Water year 1956-57: Max 5,340 Mln 114 Mean 840 Cfsm 1.35 In. 18.31

Peak discharge (base, 12,60O cfs). No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 20, 24, 25, Nov. 29 to Dec. 5, Dec. 8 to 

Mar. 21 (no gage-height record Dec. 11-27, Jan. 14-21, Feb. 13, 14; discharge estimated on basis of 

1 discharge measurement, weather records, recorded range In stage when available, powerplant records, 

and records for Pemigewasset River at Woodstock and Baker River near Rumney).
MERRIMACK RIVER BASIN 79

Squam River at Ashland, N. H.

Location.--Lat 43°42 1 15", long 71°37'50", on right bank 200 ft upstream from bridge on 

D. 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 1957.

Gage. Water-stage recorder and concrete control. Altitude of gage is 545 ft (from topographic map).

Average discharge. 18 years, 91.8 cfs.

Extremes. Maximum discharge during year, 166 cfs June 1 (gage height, 10.87 ft); minimum 

daily, 56 cfs June 6-14, Sept. 4-8.

1939-57: Maximum discharge, 498 cfs Apr. 11, 1951 (gage height, 11.93 ft); minimum 

daily, 14 cfs Feb. 4, 1940.

Remarks. Records excellent. Plow completely regulated by Squam and Little Squam Lakes.

Rating table, water year 1956-57 (gage height, in feet, and 

discharge, in cubic feet per second)

10.2

10.4

10.6

43

73

107

Discharge, in cubic feet per second, water year October 1956 to September 19E7

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.

78

78

78

78

78

78

78

76

75

75

75

73

73

73

73

75

75

75

75

75

75

75

75

75

73

73

73

71

71

71

68

2,314

74.6

-

-

Nov.

67

65

65

67

IL

71

71

71

70

68

68

68

67

65

65

68

70

70

70

70

70

71

70

70

70

70

68

68

68

68

2,060

68.7

-

-

Dec.

70

70

70

70

*70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

2,170

70.0

-

"

Jan.

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

70

75

70

70

70

70

70

70

70

70

2,175

70.2

-

"

Feb.

To" 70

70

70

70

70

70

70

70

70

70

70

70

*70

70

70

70

81

89

89

89

89

89

89

89

 89

93

91

-

2,167

77.4

-

-

Mar.

Si

91

91

91

84

11

71

71

71

71

71

71

71

71

71

71

71

71

71

71

71

73

73

73

73

73

73

73

73

73

73

2,314

74.6

-

-

Apr.

7B" 73

73

71

71

71

71

71

71

71

71

71

71

71

71

71

71

67

62

62

62

62

62

*62

62

62

62

62

62

62

2,024

67.5

-

-

May

62

62

62

62

62

62

62

62

62

62

62

62

62

62

62

62

62

62

62

62

62

62

62

62

62

62

62

62

62

62

62

1,922

62.0

-

-

June

74

62

62

*62

57

56

56

56

56

56

56

56

56

56

57

57

57

57

57

57

57

57

57

57

57

57

57

57

57

57

1,733

57.8

-

-

July

57

*5T

57

57

59

60

60

60

60

60

60

60

60

60

60

60

60

60

60

60

60

60

60

60

60

60

60

60

60

60

60

1,847

59.6

-

"

Aug.

60

60

60

60

60

*60

60

60

60

60

60

60

60

60

60

60

60

59

59

59

59

59

59

57

57

57

57

57

57

57

57

1,830

59.0

-

"

Sept.

57

57

57

56

56

56

56

56

59

62

62

62

62

62

62

62

*62

62

62

62

62

62

62

62

62

60

60

59

59

59

1,799

60.0

-

Calendar year 1956: Max 129 Min 65 Mean 86.1 Cfsm - In. -

Water year 1956-57: Max 93 Min 56 Mean 66.7 Cfsm - In. -

Discharge measurement made on this day
80 MERRIMACK RIVER BASIN

Smith River near Bristol, N. H.

Location. Lat 43°34'00", long 71°44'50", on right bank in Hill, Merrimack County, 

1.5 miles upstream from mouth and 1-J miles southwest of Bristol, Grafton County.

Drainage area. 85.8 sq mi.

Records available. May 1918 to September 1957.

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 gsge at site 

lj miles upstream at different datum.

Average discharge. 39 years, 142 cfs.

Extremes. Maximum discharge during year, 610 cfs Jan. 24 (gage height, 4.50 ft); minimum 

daily, 6.9 cfs Sept. 2.

1918-57: 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. 

Maximum stage known since at least 1885, that of Mar. 19, 1936.

Remarks. Records excellent except those for periods of Ice effect or no gage-height record, which are good. Prior to 1954, some diurnal fluctuation caused tv small mill 

above station; greater fluctuation prior to 1941.

Revisions (water years). WSP 711: Drainage area. WSP 781: 1934. WSP 1231: 1919, 

1920-21(M), 1922-31, 1932-33(M), 1941-43.

Rating table, water year 1956-57, except periods of Ice effect (gige 

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

1.85

1.9

2.0 

2.3 

2.7

3.1 

3.5 

4.0 

4.5

118

207

380

610

64

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

37

33

30

32

35

90

152

96

68

55

48

46

43

39

37

35

34

31

35

31

28

31

40

37

33

32

34

28

*30

30

1,374

44.3

0.516

0.60

Nov.

35

42

44

36

34

33

31

30

31

34

30

30

39

58

52

47

44

45

43

41

47

289

270

140

95

91

91

82

70

61

2,015

67.2

0.783

0.87

Dec.

49

58

51

*S1

47

54

72

172

199

142

112

162

227

215

164

197

229

197

140

138

129

105

92

105

125

110

95

105

101

76

64

3,783

122

1.42

1.64

Jan.

69

67

66

68

70

64

63

*63

62

61

60

58

57

54

52

51

50

48

47

46

48

50

280

5O6

474

260

186

140

118

105

3,439

111

1.29

1.49

Feb.

89

85

80

78

75

72

68

66

62

62

64

58

54

*53

51

49

49

49

50

49

48

45

45

46

47

56

20O

380

_

2,130

76.1

0.887

0.92

Mar.

319

224

162

120

98

90

85

82

96

135

105

10O

90

115

160

260

300

235

*180

165

155

199

229

227

197

181

179

181

181

179

5,196

168

1.96

2.25

Apr.

157

234

346

244

197

254

319

263

221

199

210

202

241

210

174

151

159

169

174

174

176

144

*140

125

115

110

105

98

92

96

5,439

183

2.13

2.38

May

98

85

79

75

73

68

64

60

58

53

51

51

50

52

62

79

70

62

56

89

247

175

116

91

73

64

109

132

*95

76

66

2,579

83.2

0.970

1.12

June

56

52

54

53

45

40

44

48

42

34

30

28

26

26

64

79

54

34

30

33

36

26

22

23

37

63

118

89

a73

a56

1,415

47.2

0.550

O.61

July

a45

*38

30

33

68

120

78

60

60

60

51

38

30

26

22

24

21

19

17

!£

15

17

16

16

19

20

17

27

51

79

74

1,206

39.9

0.453

0.52

Aug.

45

31

24

21

*20

20

17

16

14

15

19

27

26

21

18

17

15

13

12

11

11

10

9.4

9.0

8.6

11

11

9.4

8.6

8.2

7 .8

506.0

16.3

0.190

0.22

Sept.

7.2

6.9

9.4

9.0

9.4

8.6

7.8

8.6

8.2

7.8

9.0

8.2

*8 . 2

7.5

7.2

8.6

13

19

19

30

23

15

20

25

20

15

12

11

10

9.7

373.3

12.4

0.145

0.16

Calendar year 1956: Max 1,610 Mln 10 Mean 150 Cfsm 1.75 In. 23.76

Water year 1956-57: Max 506 Mln 6.9 Mean 80.9 Cfsm 0.943 In. 12.78

Peak discharge (base, 1,150 cfs). No peak above base

* Discharge measurement made on this day,

a No gage-height record; discharge estimated on basis of 1 discharge measurement, weather records, 

and recorded range In stage.

Note. Stage-discharge relation affected by ice Nov. 24, 25, Dec. 19, 22-28, Jan. 3-23, Feb. 27, 

28, Mar. 4-6, 10-21.
MERRIMACK RIVER BASIN 81

Lake Winnipesaukee at The Weirs, N. H.

Location. Lat 43°36'20", long 71°27'25" , 

Belknap County.

ft north of highway bridge at The Weirs,

Drainage area.--363 sq mi at outlet at Lakeport.

Records available. September 1933 to September 1957. Prior to November 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, datum of 

1929.

Extremes. Maximum daily gage height during year, 3.49 ft Oct. 1, 2; minimum daily, 1.56 ft 

Feb. 24, 25.

1937-57: Maximum daily gage height, 5.86 ft May 22, 23, 1954; minimum daily, 0.63ft 

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 above 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 1956-57 (gage height, In feet, and contents, 

In millions of cubic feet)

1.0 

2.0 

3.0 

4.0

11,930

13,880

15,840

17,840

Mean gage height, In feet, water year October 1956 to September 1957

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.

3.49

3749

3.46

3.47

3.44

3.44

3.48

3.48

3.46

3.45

3.44

3.43

3.42

3.40

3.39

3.37

3.36

3.34

3.33

3.30

3.28

3.27

3.29

3.30

3.32

3.29

3.28

3.26

3.24

3.22

5.20

16,240

-239

Nov.

5.21

5.22

'5718

5.16

5.14

5.13

5.11

3.09

3.06

5.00

2.99

2.98

2.97

2.96

2.94,

2.91

2.87

2.87

2.85

2.84

2.84

2.90

2.90

2.90

2.91

2.93

2.91

2.90

2.90

2.88

15,590

-251

Dec.

2.86

2.85

2.87

2.81

2782

2.82

2.82

2.83

2.87

2.87

2.87

2.89

2.92

2.95

2.99

3.00

3.01

2.99

3.01

3.00

3.00

3.00

3.02

3701

2.98

2.98

2.98

2.97

2.95

2.88

2.94

15,710

+44.8

Jan.

2.90

2784

2.80

2.76

2.71

2.69

2.66

2.63

2.60

2.56

2.53

2.50

2.44

2.40

2.35

2.31

2.29

2.25

2.20

2.15

2.11

2.10

2.13

2.15

2.14

2.12

2.09

2.06

2.06

2.05

2.OO

13,840

-698

Feb.

1.97

1.94

1.90

1.87

1.84,

1.82

1.80

1.76

1.75

1.75

1.75

1.72

1.69

1.67

1.64

1.63

1.61

1.60

1.59

1.58

1.57

1.58

1.57

1.56

T756

1.57

1.65

1.69

13,290

-227

Mar.

1.72

1.74

1.75

1.76

1.76

1.77

1.78

1.79

1.84

1.85

1.87

1.89

1.91

1.92

1.94

1.99

2.02

2.05

2.08

2.09

2.10

2.12

2.13

2.16

2.18

2.20

2.22

2.24

2.25

2.26

2.27

14,410

+418

Calendar year 1956. ................... t +39.2

Apr.

2.28

2734

2.36

2.39

2.46

2.50

2.51

2.56

2.58

2.58

2.62

2.65

2.67

2.68

2.69

2.71

2.72

2.74

2.75

2.76

2.76

2.78

2.79

2.80

2.81

2.82

2.83

2.84

2.84

2.83

15,530

+432

May

2.83

2.81

2.80

2.82

2.83

2.82

2.81

2.81

2.79

2.81

2.83

2.84

2.85

2.89

2.92

2.91

2.92

2.93

2.93

3.02

3.07

3.08

3.10

3.08

3.09

3.13

3.16

3.18

3.20

3.21

3.22

16,280

+280

June

3.22

3.24

3.26

3.25

3.25

3.25

3.24

3.23

3.23

3.21

3.21

3.20

372T

3.21

3.24

3.23

3.23

3.23

3.25

3.25

3.25

3.24

3.23

3.23

3.31

3.33

3.34

3.35

3734

3.30

16,420

+54.0

July

3.27

3.24

3.25

3.29

3.33

3.31

3.34

3.34

3.36

3.34

3.33

3.32

3.32

3.32

3.28

3.27

3.26

3.27

3.26

3.25

3.24

3.24

3.23 3~724"

3.25

3.24

3.23

3.25

3.26

3.25

3.25

16,320

-3.7.3

Aug.

3.23

3.21

3.?0

3.19

3.16

3.14

3.13

3.10

3.09

3.10

3.11

3.09

3.07

3.05

3.04

3.04

3.01

3.00

2.99

2.98

2.96

2.94

2.?2

2.89

2.89

2.89

2.84

2.82

2.79

2. 78

2.7f

15,350

-362-

Sept.

2.74

2.74

2.74

2.74

2.71

2.69

2.69

2.69

2.68

2.67

2.67

2.66

2.65

2.65

2.65

2.65

2.69

2.68

2.66

2.65

2.65

2.64

2.66

2.64

2.62

2.56

2.50

2.48

2.46

2.45

14,760

-228

Water year 1956-57. ................... * -67.2

t Contents, In millions of cubic feet, at 12 p.m. on last day of month. 

t Change In contents, equivalent in cubic feet per second.
82 MERRIMACK RIVER BASIN

Lake Winnipesaukee Outlet at Lakeport, N. H.

Location.--Lat 43°32'55", long 71°S7'55", 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 height" only), June 1933 

to September 1957.

Gage. Water-stage recorder, Keeler deflection meter, and measuring flume. Datum of gage 

is 500.55 ft above mean sea level, datum of 19S9. January 1860 to December 1911, staff 

gage at site 150 ft downstream at same datum. June 1, 1933, to Sep4:. 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. 24 years, 535 cfs (adjusted for storage).

Extremes. Maximum daily discharge during year, 1,550 cfs Feb. 1; mininum daily, 5 cfs 

several days during April, May, and June.

1933-57: Maximum daily discharge, 2,890 cfs Mar. 31, 1936; mininum daily, 5 efs 

several days during April, May, and June 1957.

Remarks. Records fair. Flow completely regulated by Winnipesaukee (s?e preceding page), 

 WeriFworth, 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 1956 to September 1957

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.

435

450

425

435

435

450

470

340

240

340

330

375

445

490

465

470

460

460

460

455

475 

445

465 

470

470

450

470

475

460

470

*430

13,190

425

-239

Nov.

*460

455

445

465

455

430

465

460

470

610

535

380

465

585

660

760

980

605

520

500

455 

395

225 

240

470

300

235

335

305

355

13,790

460

-351

Dec.

320

440

570

635

600

555

340

360

530

365

375

395

445

480

480

460

440

455

435

540

985 

870

890 

875

870

990

990

1,030

1.140

 990

1,140

19,980

645

+44.8

Jan.

1,340

1,300

1,330

1,330

1,320

1,310

1,370

1,350

1,340

*1,290

1,430

1,510

1,510

1,490

1,470

1,470

1,460

1,480

1,430

1,410

1,080

1,400 

1,290

1,350

1,400

1,390

1,430

1,500

1.540

1,480

42,405

1,368

-698

Feb.

1.550

1,540

1,540

1,460

1,110

1,150

1,090

980

1,000

875

905

855

*B40

*825

800

625

520

540

*450

415

390 

250

285

380

400

325

410

370

- .

21,880

781

-227

Mar.

330

380

315

360

355

365

*350

*285

235

290

295

290

290

305

245

90

125

280

*295

*250

265 

275

280 

225

295

305

300

310

290

270

185

8,730

282

+418

Apr.

290

300

290

285

305

205

145

210

315

240

340

300

265

195

315

*295

275

260

240

175

150 

190

285 

*200

200

155

5

5

*160

120

6,715

224

-1-432

May

95

*90

95

50

5

100

100

120

*120

120

5

5

100

100

100

100

100

5

5

100

100 

100

100 

100

5

5

100

100

100

5

100

2,330

75.2

+280

June

5

5

100

*130

140

140

220

130

130

155

155

155

160

185

130

130

200

180

165

180

m130

205

180

80

*185

225

130

130

4,425

148

+54.0

July

175

15

95

95

*95

95

95

120

125

150

175

185

185

185

185

185

185

185

185

185

185 

185

185 

185

185

185

185

185

185

*1S5

185

4,995

161

-37.3

Aug.

185

185

185

185

185

185

185

185

185

185

185

185

185

185

185

90

70

2TO

225

210

210 

190

185 

185

185

185

220

235

215

210

150

5,750

185

-362

Sept.

185

185

295

215

235

270

185

185

280

230

225

230

165

185

185

250

220

*215

*180

205

130

210 

170

175

170

170

145

215

225 ...._..

6,065

202

-228

Adjusted for change in reservoir contents*

Mean 

Cfsm 

In.

187 

0.515 

0.59

209 

0.576 

0.64

Calendar year 1956: 

Water year 1956-57:

689 

1.90 

2.19

670 

1.85 

2.13

554 

1.53 

1.59

700 

1.93 

2.22

656 

1.81 

2.02

355 

0.978 

1.13

Observed

Max 1,690 Mln 165 Mean 597 

Max 1,550 Mln 5 Mean 412

202 

0.556 

0.62

124 

.0.3.42 

0.39

-177 

-0.488 

-0.56

-25.5 

-0.070 

-0.08

Adjusted

Mean 636 C"sm 1.75 In. 23.86 

Mean 344 C'am 0.948 In. 12.88

* Discharge measurement made on this day.

t Change In contents, equivalent In cubic feet per second, In Lake Winnipesaukee.

* Negative figures Indicate that evaporation and seepage from reservoirs exceeded inflow.

Note. Discharge for period Oct. 1-8 computed on basis of estimated leakage, estimated discharge 

through canal and gates, and computed flow over spillway. No deflection record Nov. 7, 8, June 9, 

15, 16, 22, 23, July 3-5, 7j discharge computed from reconstructed graph based on typical regulation 

pattern, observer's record of gate operation, and engineer's notes. Discharge for periods Apr. 27, 

28, May 4 to June 4, July 8 to Aug. 26, Aug. 31 to Sept. 2, Sept. 7, 8, 14, 15, 21, 22, 28-30 estimated on basis of 9 discharge measurements, observer's record of gate operation, and engineer's 

estimate of leakage.
MERRIMACK RIVER BASIN 83

Winnipesaukee 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 1957.

Gage. Water-stage recorder. Datum of gage is 441.87 ft above mean sea level, unadjusted.

Average discharge. 20 years, 698 cfs.

Extremes. Maximum discharge during year, 1,690 cfs Jan. 15 (gage height, 5.61 ft); maximum gage height, 5.68 ft Jan. 15 (backwater from ice); minimum daily discharge, 117 cfs 

July 3.

1937-57: 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 good except those for periods of no gage-height record, which ar? fair. 

Plow regulated by powerplants and by Winnipesaukee (see p. 81 ), Winnisquam, Merrymeeting (see p. 109), and other lakes above station.

Rating tables, water year 1956-57, except periods of Ice effect (gage

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

(Shifting-control method used June 25, 26; backwater from debris

July 29-31, Aug. 10, 11, 15-21, Sept. 17, 24-30)

Oct. 1 to June 26 June 27 to Sept. 30

2.7 

3.1 

3.5

163

287

437

4.0 

5.0 

6.0

660

1,250

2,000

2.5 

2.8

3.1

115

169

245

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

TMal

Mean

Cfsm

In.

Oct.

375 

473 

473

441

433

429

445

461

449

441

437

437

437

433

433

429

429

429

445

541

563

563 

550

537 

537

532

532

532

537

537 

541

14,831

478

-

-

Nov.

 541 

541 

541

541

537

537

537

532

523

545

368

528

541

550

545

545

541

554

545

541

550

610

577 

559

559

554

559

554

537

16,117

537

-

-

Dec.

356 

379 

*528

537

537

541

541

394

429

b572

b572

b610

665

670

660

680

660

b635

b615

755

1,040

1,050 

1,060

1,060 

bl,070

1,070

1,060

1,060

1,170

bl,370

bl.580

23,726

765

-

-

Jan.

bl,370 

bl.560 

bl,360

1,380

1,380

1,380

*1,380

1,380

1,380

1,390

1,380

1,380

bl,370

bl,460

b 1,660

1.680

1,650

1,460

1,380

1,380

1,380

1,360 

bl,490

bl,530 

1,500

1,460

1,430

1,420

1,420

*1,420 

1,410

44,380

1,432

_

-

Feb.

1.410 

1,400 

1,400

1,400

1,360

1,220

1,190

1,140

1,040

1,040

1,040

1,020

940

802

784

784

695

b568

568

559

506

b349 

327

m338

*469

511

23,510

840

-

-

Mar.

485 

449 

425

494

591

425

457

582

a577

453

410

3450

a570

a430

a440

a450

3455

a465

a470

 469

465

494 

601

685 

545

502

615

465

433

437 

421

15,210

491

_

-

Apr.

477 

640 

844

850

640

680

670

645

465

465

519

615

620

445

375

437

572

537

375

345

338

338 

327

*323 

319

312

298

280

231

206

14,188

473

_

-

May

203 

*20O 

203

215

209

197

197

200

*212

218

224

224

224

218

221

215

206

206

206

234

280

Z~l8 

218

206 

212

215

215

*280

250

200 

194

6,720

217

_

-

June

202 

260 

231

218

212

209

209

206

203

2OO

200

194

197

197

200

191

188

191

194

197

188

183 

180

188 

200

240

*223

173

192

156

6,022

201

_

-

July

*139 

122

all?

124

*134

164

239

212

200

190

188

186

184

184

182

182

186

188

190

186

184

182 

184

182 

180

182

182

194

195

 192 

186

5,540

179

_

-

Aug.

18' 

18? 

182

18?

18?

18?

18?

180

18? 18")

1ST

18 <

*167

irf 18")

190

186

1ST

183

18^

183

18 1 

177

175 

173

*177

177

177

175

173 

173

5,615

181

-

-

Sept.

173 

173 

173

175

175

177

180

182

180

184

182

175

173

175

173

180

190

180

173

173

173 m186

197 

200

197

200

202

202

*200

5,474

182

-

-

Calendar year 1956! Max 1,940 Mln 250 Mean 719 Cfsm - In. -

Water year 1956-57: Max 1,680 Mln 117 Mean 497 Cfsm - In. -

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and powerplant records

b Stage-discharge relation affected by Ice.
MERRIMACK RIVER BASIN

Merrlmack 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 Winnipesaukee Rivers.

Drainage area. 1,507 sq mi.

Records available.--July 1903 to September 1957.

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. 52 years (1905-57), 2,786 cf s.

Extremes. Maximum discharge during year, 8,120 cfs Apr. 22 (gage height, 9.03 ft); minimum daily, 209 cfs Sept. 14. 1903-57: 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, and velocity-area 

study; minimum daily, that of Sept. 14, 1957.

Remarks.--Records excellent except those for periods of ice effect or backwater from 

aquatic vegetation, which are good, and those for period of no gage-height record, 

which are fair. Flow regulated by powerplants, by Franklin Falls Feservoir since 1942, 

and by Squam, Little Squam, Newfound, Winnipesaukee, Winnisquam, Wentworth, Merrymeeting, and other lakes. See pages 81, 109, for description and month-end contents 

of many of these reservoirs.

Revisions (water years).--WSP 401: 1913 calendar year. WSP 641: 19£3(M). WSP 756: 

Drainage area. WSP 781: 1928(M). WSP 1231: 1911-13, 1916-17(M), 1919(M), 1922(M).

Rating table, water year 1956-57, except periods of ice effect and 

backwater from aquatic vegetation (gage height, in feet, and 

discharge, in cubic feet per second)

3.0 

3.5 

4.0

190

420

735

5.0 

7.0 

9.0

1,630

4,270

8,060

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

13

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

1,580

1,810

1,600

1,640

1,520

774

1,760

4.030

2,940

2,300

1,960

1,910

1,510

1,440

1,510

1,570

1,510

1,440

1,540

620

1,350

1,580

1,520

1,520

1,540

1,550

923

1,260

1,430

1,410

1,380

50,227

1,620

1.07

1.24

Nov.

*1,470

1,55O

1,800

1,840

1,510

1,500

1,490

1,490

1,390

806

1,030

1,540

1,460

1,510

1,530

1,450

1,400

1,490

1,660

1,480

1,470

3,610

5.080

3,180

2,230

2,110

2,170

2,170

2,080

1,870

55,366

1,846

1.22

1.37

Dec.

1,610

1.110

1,630

1,720

*1 , 580

1,580

1,720

1,960

2,650

2,420

2,260

2,280

2,780

2,930

2,480

2,400

2,910

2.940

2,450

2,300

2,640

2,680

2,650

2,280

2,730

2,680

2,550

2,280

2,240

b2,350

b2,300

71,090

2,293

1.52

1.75

Jan.

b2,250

b2 , 500

b2,400

b2 , 500

b2,000

b2,250

2,340

2,410

2,410

2,390

b2,350

bl,900

b2,200

b2,450

b2,600

b2 , 600

b2,600

b2,650

bl.800

b2 , 300

2,480

2,560

3,440

5.550

5,110

4,170

3,800

3,350

3,090

3,140

2 950

86,340

2,785

1.85

2.13

Feb.

2,890

2,480

2,630

2,620

2,740

2,560

2,490

2,310

1,750

2,100

2,210

2,040

1,940

1,800

1,740

1,270

1,540

1,620

1,440

1,390

1,450

1,210

1,020

1.010

1,330

1,320

*2,220

4.560

-

55,680

1,989

1.32

1.37

Calendar year 1956: Max 15,900 Min 452

Mar.

4.290

3,430

2,800

2,500

2,260

1,950

1.760

1,880

2,170

2,220

2,250

2,030

2,10O

1,910

1,980

2,840

3,040

2,990

2,800

*2,710

2,640

2,280

2,800

3,050

2,800

2,630

2,760

2,590

2,450

2,520

2,140

78,570

2,535

1.68

1.94

Apr.

2,370

2.500

4,060

4,030

3,020

3,220

3,760

3,530

2,980

2,780

2,730

2,680

2,840

2,810

2,500

2,410

2,630

2,450

2,500

3,040

4,380

6.810

4,770

4,140

*3,950

3,230

2,840

3,150

3,05O

2,680

97,640

3,255

2.16

2.41

May

2,760

2,190

2,060

1,850

1,610

1,560

1,470

" 1,410

1,430

1,490

1.050

1,540

1,230

1,320

1,730

2,340

2,130

1,770

1,710

1,500

5.370

5,350

2,470

2,050

1,820

1,710

1,540

2,060

*1,870

1,720

1,470

57,540

1,856

1.23

1.42

June

1,150

1,240

1,390

1,710

1,410

1,290

1,260

1,120

1,020

1,220

1,200

1,100

al,DOO

a8 50

a 800

al,050

al.OOO

aSOO

a750

aSOO

a850

a 5oO

a650

a800

8900

al,150

*1,490

1,520

1,680

1.760

33,460

1,115

0.740

0.83

July

1,740

1,260

844

1,090

2,060

4.140

2,620

1,940

1,530

1,590

1,960

1,730

1,090

922

1,060

1,070

976

1,010

966

292

777

830

910

916

919

886

382

796

*976

1,310

1,340

39,932

1,288

0.855

0.99

Aug.

941

858

584

649

721

685

725

755

481

395

630

870

726

661

575

558

501

556

568

537

555

545

481

268

429

*550

*554

538

545

553

275

17,867

576

0.382

0.44

Sept.

255

333

575

494

503

578

274

475

538

551

581

562

478

209

357

581

703

559

469

499

311

405

774

1.160

887

705

494

270

562

610

15,752

525

0.348

0.39

Mean 2,838 Cfsm 1.88 In. 25.65

Water year 1956-57: Max 6,810 Min 209 Mean l",807 Cfsm 1.20 In. 16.28

* 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 other stations in Merrimack River basin.

b Stage-discharge relation affected by ice.

Note. Backwater from aquatic vegetation June Z-1Z, June 27 to Sept. 30. Discharge in cubic feet 

per second per square mile and runoff in inches may not represent natural flow because of regulation.
MERRIMACK RIVER BASIN

Contoocook River at Peterboro, N. H.

Location. Lat 42°51'45", long 71°57'35", on left bank 1,100 ft downstream from irilldam, 

1 mile south of Peterboro, Hillsboro County, and lj miles upstream from Nubanusit 

Brook.

Drainage area.--68.1 sq mi.

Records available.--July 1945 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 740 ft (from topographic map).

Average discharge. 12 years, 122 ofs.

Extremes. Maximum discharge during year, about 600 cfs Jan. 24; maximum gage height, 

5.25 ft Jan. 23 (backwater from ice); minimum daily discharge, 5.0 cfs Oct. 31.

1945-57: 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 by local 

residents.

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

ulated by mill and reservoirs above station.

Rating tables, water year 1956-57, except periods of ice effect (gage 

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

Flow regOct. 1 to Nov. 21 Nov. 22 to Sept. 30

0.8

.9

1.0

1.2

3.6

6.0

9.2

20

1.4 

1.7 

2.0

0.9

1.0

1.2 22

1.5 51

6.2

9.8

2.0 

2.5 

3.0 

3.2

133

262

440

515

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

86

5?

42

44

47

33

43

52

59

43

40

37

19

19

29

23

32

44

30

16

16

34

47

35

41

*32

10

16

31

19

5.0

1,O56.O

34.1

0.501

0.58

Nov.

20 6.2

14

18

24

12

28

31

42

16

15

40

31

14

18

31

26

20

31

48

40

177

134

81

48

94

65

89

71

89

1,373.2

45.8

0.673

0.75

Dec.

34

27

?9

72

*72

30

29

56

57

73

45

230

248

186

102

143

149

123

120

113

104

81

89

109

109

105

70

90

68

70

75

2,908

93.8

1.38

1.59

Jan.

72

69

67

65

56

47

70

69

67

58

54

40

50

65

64

60

54

45

40

40

45

50

120

5OO

420

350

250

180

150

120

105

3,442

111

1.63

1.88

Feb.

95

80

98

92

88

85

83

81

74

77

87

84

75

67

62

55

50

54

50

56

58

50

45

63

93

116

284

2T3

-

2,415

86.2

1.27

1.32

Mar.

138

99

107

109

99

86

91

87

91

101

113

86

102

157

204

281

243

217

171

141

163

171

170

166

172

156

149

176

*172

113

116

4,447

143

2.10

2.43

Apr.

144

168

250

193

188

336

324

259

256

259

259

272

243

190

187

154

156

160

163

98

91

113

106

137

118

97

103

107

122

*97

5,370

179

2.63

2.93

May

99

102

90

43

61

80

53

29

27

60

68

125

143

86

79

88

68

58

47

67

117

90

66

54

42

40

49

80

64

49

42

2,166

69.9

1.03

1.18

June

38

35

38

36

*19

29

99

64

70

49

31

4 9.3

82

70

82

78

76

88

92

81

79

68

71

100

117

129 Tie

53

29

1,973.3

65.8

0.966

1.08

July

46

63

75

25

26

21

18

23

13

22

14

14

9.0

8.6

36

70

*70

88

59

40

30

16

26

29

7.4

9.0

10

13

13

13

9.8

916.8

29.6

0.435

0.50

Aug.

9.0

9.0

9.8 9~i

9.4

8.2

7.8

*7.4

6.8

7.2

7.4

7.1

6.8

7.1

8.2

7.8

8.6

7.4

6.8

6^1

6.2

6.2

6.5

7.8

6.8

9.0

9.0

7.8

7.1

6*8

9.1

239.7

7.73

0.114

0.13

Sept.

£467?

*6.2

6.2

8.6

7.1

8.3

7.8

7.4

7.1

24

16

28

9.3

6.5

45

2B

28

11

34

14

7.4

9.C

24

9.0

15

7.1

9.0

6.8

6.2

408.4

13.6

0.200

0.22

Calendar year 1956: Max 1,41O Min 3.6 Mean 135 Cfsm 1.98 In. 27.00

Water year 1956-57: Max 50O Min 5.O Mean 73.2 Cfsm 1.07 In. 14.59

Peak discharge (base, 7OO cfs). No peak above base.

* Discharge measurement made on this day.

Note . Stage-discharge relation affected by ice Dec. 19, Dec. 26 to Feb. 24.
86 MERRIMACK RIVER BASIN

Nubanusit Brook near Peterboro, N. H.

Location. Lat 42°53 I 10", long 71°58'25", on left bank l£ miles downstream from Edward 

MacDowell Reservoir, 1.3 miles northwest of Peterboro, Hillsboro County, and 1 5 miles 

upstream from mouth.

Drainage area. 46.9 sq mi.

Records available. October 1920 to September 1931, July 1945 to Septenber 1957. October 

1920 monthly discharge only, published in WSP 1301.

Gage. Water-stage recorder. Altitude of gage is 790 ft (from topographic map). Prior to 

"(Jet. 1, 1931, at site 550 ft downstream at different datum.

Average discharge. 23 years, 84.3 cfs.

Extremes. Maximum discharge during year, 303 cfs Jan. 28 (gage height, 3.08 ft); minimum 

daily, 5.2 cfs Sept. 29.

1920-31, 1945-57: 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.

^x.^. Records excellent except those for periods of ice effect or no gage-height record, which are fair. Plow regulated by mills, Nubanusit 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 1956-57, except periods of Ice effect (gage 

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

Oct. 1 to Jan. 25 Jan. 26 to Sept. 30

0.9 

1.0 

1.2

1.5 

2.0 

2.5

49

105

182

0.6 4.5

.7 6.6

.9 13

1.2 29

1.5 54

2.0 113

3.0 286

3.1 307

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

22

18

18

18

22

22

31

36

32

28

23

21

22

33

43

47

48

4T

31

25

21

19

20

23

24

 18

19

18

17

17

16

796

25.7

0.548

0.63

Nov.

18

20

19

20

20

19

18

21

15

alT

al7

a!8

a21

23

22

22

21

25

26

29

24

58

71

74

74

73

71

69

56

37

1,018

33.9

0.723

0.81

Dec.

65

64

66

66

*27_

SI

128

125

120

113

73

87

153

174 Tg3~

139

87

87

73

58

51

53

60

44

116

147

122

98

86

75

64

2,870

92.6

1.97

2.28

Jan.

60

60

40

58

77

70

60

57

51

48

51

50

44

 40

43

40

31

37

36

44

41

37

47

42

150

267

160

238

288

2i50"

135

2,598

83.8

1.79

2.06

Feb.

130

83

74

72

71

68

66

56

49

50

*53

53

*53

51

50

49

47

44

30

3?

32

32

32

32

33

47

102

167

1,658

59.2

1.26

1.31

Mar.

191

177

109

96

85

70

67

65 BT

70

71

70

68

73

77

150

203

213

?C8

195

198

161

130

124

117

109

103

*99

96

94

92

3,648

118

2.52

2.89

Apr.

88

107

147

145

136

168

213

217

250

179

163

153

150

142

127

109

97

90

83

81

76

71

66

58

53

47

^1

53

58

*54

3,382

113

2.41

2.68

May

49

40

36

32

32

31

28

25

23

23

40

77

96

83

81

94

90

71

57

59

109

124

I0T

80

59

48

55

77

80

64

50

1,914

61.7

1.32

1.52

June

40

36

40

*39

32

28

27

26

23

19

17

15

15

16

16

16

15

14

13

16

17

14

12

11

TS

26

57

79

6T

50

808

26.9

0.574

0.64

July

40

33

24

23

31

32

29

25

21

18

 15

15

12

12

12

11

10

10

10

8.8

8.5

8T6

8.5

8.5

9.9

10

11

15

14

OC 

&O

30

541.8

17.5

0.373

0.43

Aug.

25

21

17

15

17

8.8

*14

13

6.3

6.0

6.9

15

7.1

6.9

9.8

6.6

5.6

5.4 779"

12

11

16

26

27

30

35

3T

29

28

28

23

510.3

16.5

0.352

0.40

Sept.

9.9

7.4

19

19

*14

15

6.8

6.0

6.1

11

13

24

17

6.0

5.8

14

15

15

17

16

14

6.0

16

17

25

26

34

10

2T~ 5.2

431.2

14.4

0.307

0.34

Calendar year 1956: Max 619 Mln 8.5 Mean 93.6 Cfsm 2.00 IT. 27.16

Water year 1956-57: Max 288 Mln 5.2 Mean 55.3 Cfsm 1.18 In. 15.99

* 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 Warner River at Davlsvllle.

Note.--Stage-discharge relation affected by Ice Dec. 18, 19, Dec. 30 to Jan. 25, Jan. 30 to Feb. 3, 

FebT~5-9, 11-13, 15, 16, 20-22, Mar. 3-6, 10, 11, 13. Discharge In cubic feet per square mile and 

runoff in inches may not represent natural flow because of regulation.
MERRIMACK RIVER BASIN 

North Branch Contoocook River near Antrim, N. H.

87

Location.--Lat 43°04i55", 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 1957.

Page. 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. 33 years, 100 cfs.

Extremes. Maximum discharge during year, 527 cfs Jan. 24 (gage height, 3.84 ft); minimum, 

1.3 cfs Sept. 2.

1924-57: 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, which are fair, 

lated by Highland Lake and several ponds above station.

Flow reguRevisions (water years). WSP 756: Drainage area. WSP 1231: 

1928, 1929-30(M), 1933-36, 1938-40, 1944.

1925(M), 1926, 1927(M),

Rating table, water year 1956-57, except periods of ice effect (gage 

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

-0.1

.1

.3

.6

1.0

0.6

2.4

5.4

12

30

1.5 

2.0 

2.5 

3.0 

4.0

67

123

203

304

580

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Cfam

In.

Oct.

22

18

17

*16

16

16

20 

24

25

24

22

20

19

18

18

17

16

15

14

14

14

13

14

15

16

16

35

56

39

22

639

20.6

0.376

0.43

Nov.

19

16

15

15

*15

14

13 

12

33

60

68

73

76

75

70

67

63

63

65

61

61

. 134

166

129

98

86

89

82

77

72

1,887

62.9

1.15

1.28

Dec.

72

65

62

62

59

56" 56

70

85

88

87

*126

176

185

T68

165

150

144

145

135

118

115

120

127

136

140

145

126

111

92

80

3,466

112

2.04

2.35

Jan.

78

80

76

76

78

70

68 

68

66

66

64

62

60

58

*58

54

54

52

51

50

50

60

320

462

361

272

218

183

160

145

1 ^("1 J.OU

3,650

118

2.15

2.48

Feb.

115

105

92

96

86

76

70 

66

62

66

60

56

53

51

48

46

45

44

43

*42

40

39

38

37

38

45

140

115

1,874

66.9

1.22

1.27

Mar.

146

124

110

95

88

82

78 

73

80

83

81

68

67

80

102

160

175

158

134

120

*116

120

129

134

131

126

120

120

127

144

149

3,520

114

2.08

2.39

Apr.

148

138

203

211

196

235

280 

272

253

233

216

205

218

212

192

173

163

160

162

162

158

152

130

90

64

50

35

31

33

»35

4,810

160

2.92

3.26

May

37

37

37

38

38

37

34 

32

30

27.

34

44

52

52

54

61

65

67

65

72

124

142

134

119

102

82

72

75

73

65

57

1,958

63.2

1.15

1.33

June

50

46

45

42

37

*32

31 

30

26

23

20

18

16

14

12

11

10

8.7

8.3

8.1

7.0

6.2

5.8

5.6

772

11

15

20

34

42

641.9

21.4

0.391

0.44

July

ii

37

31

34

35

34

31 

27

*24

22

19

18

15

13

12

10

9.4

8.1

7.6

7.0

6.6

6.4

6.0

5.6

6.4

5.4

T7S1

8.9

7.0

6.8

8.1

509.6

16.4

0.299

0.35

Aug.

8.1

7.0

8.8

8.4

5.1

4.4

*4.6 H

5.4

6.0

5.1

4.6

4.6

4.6

4.3

4.1

3.5

4.0

3.2

2.8

2.8

2.6

2.3

2.2

2.6

2.6

2.1

1.9

1.8

1.7

136.9

4.42

0.081

0.09

Sept.

1.6

1.4

278

4.7

372

2.2

2.2

3.7

2.8

1.9

2.1

1.8

1.7

1.7

1.7

1.9

2.6

2.1

1.8

1.7

1.6

1.6

3.9

3.5

2.2

*2.0

1.9

1.9

1.9

1.9

68.0

2.27

0.041

0.05

Calendar year 1956: Max 1,330 Min 0.6 Mean 101 Cfam 1.84 In. 25.18

Water year 1956-57: Max 462 Min 1.4 Mean 63.5 Cfam 1.16 In. 15.72

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 25, 26, Nov. 30 to Dec. 2, Dec. 5, 11, 19, 

20, 26, 27, Dec. 30 to Jan. 23, Jan. 29 to Feb. 28, Mar. 4-6, 10, 11. Discharge in cubic feet pei 

second per square mile and runoff in inches may not repreaent natural flow because of regulation.
88 MERRIMACK RIVER BASIN

Beards Brook near Hillsboro, N. H.

Location. Lat 43°06 1 50", long 71°55'35", on right bank 300 ft upstream from bridge on 

State Highway 9, 500 ft upstream from mouth, and li miles west of Hillsboro, Hillsboro 

County.

Drainage area. 55.4 sq mi.

Records available.--October 1945 to September 1957. October 1945 monthly discharge only, 

published in WSP 1301.

Gage. Water-stage recorder. Altitude of gage is 595 ft (from topographic map). 

Average discharge. 12 years, 95.3 cfs.

Extremes. Maximum discharge during year, 600 cfs Jan. 23 (gage height, 3.75 ft); maximum 

gage height, 5.58 ft Jan. 23 (ice Jam); minimum discharge, 1.7 cfs Aug. 19.

1945-57: 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 and those below 5 cfs, which 

are fair.

Revisions (water years). WSP 1231: 1948.

Rating tables, water year 1956-57, except periods of Ice effect (gage 

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

Oct. 1 to Jan. 23 Jan. 24 to Sept. 30

1.7 19

2.0 44

2.3 89

2.6

3.0 

3.5

167

308

500

1.08 

.1

1.2

1.3

1.4

2.0 

2.3 

3.V 

5.3 

V.2

1.5

1.7

1.8 

2.0 

2.2

9.9

19

26

46

76

2.6 

3.0

3.5

170

308

500

Note. Same as following table below 

1.7 ft. 

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

IV

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Ttotal

Mean

Cfsm

In.

Oct.

11

9.6

8.6

*8.3

9.9

9.9

17

IB- 30

IS

14

12

12

12

10

9.9

9.2

8.6

8.3

8.0

7.8

8.3

9.6

12

11

10

10

9.9

11

26

9.9

376.8

12.2

0.220

0.25

Nov.

8.1

15

12

9.9

*9.6

8.9

8.9

8.9

8.9

8.9

9.5

17

19

18

18

20

15

23

15

13

15

118 ^M

48

44

49

46

27

24

831.4

27.7

0.500

0.56

Dec.

21

20

31

29

24

26

28

68

69

60

*44

119

193

190

127

140

146

110

94

86

78

72

62

80

94

86

80

72

60

55

50

2,414

77.9

1.41

1.62

Jan.

50

50

49

49

48

45

44

44

43

43

41

40

39

38

*37

37

36

35

34

34

33

37

370

460

319

211

156

122

99

87

76

2,806

90.5

1.63

1.88

Feb.

73

68

63

62

59

52

49

48

48

48

48

42

37

38

37

35

34

32

32

*31

29

28

SI

28

29

47

230

280

-

1,634

58.4

1.05

1.10

Mar.

218

148

110

84

74

66

60

56

68

84

74

65

64

92

140

250

250

200

155

134

*1Z4

145

164

170

148

134

127

122

122

120

113

3,881

125

2.26

2.61

Apr.

106

162

257

192

162

257

323

246

218

192

189

182

192

170

137

117

108

106

106

99

93

89

80

73

65

60

57

60

62

*60

4,220

141

2.55

2.83

May

56

48

42

41

39

36

33

30

27

25

26

32

38

33

42

80

65

49

41

65

196

143

95

70

52

41

49

91

68

49

40

1.V42

56.2

1.01

1.17

June

34

31

41

37

32

*26

44

37

31

24

17

14

12

11

12

8.9

7.4

7.2

6.8

13

12

8.6

6.8

6.2

8.3

40

95

63

42

34

762.2

25.4

0.458

0.51

Jily

24

19

16

30

37

38

26

19

*16

14

12

11

9.9

9.2

8.3

7.4

6.6

5.8

5.3

4.3

3.8

3.5

3.4

677

6.6

5.3

8.0

7.8

7.4

13

387.4

12.5

C.226

0.26

Aug.

13

8.9

6.4

5.0

4.8

4.3

4.6

3.8

*3.5

5.0

6.8

9.6

8.7

6.2

5.3

4.8

4.5

3.8

3.3

3.2

2.9

2.7

2.4

2.3

2_ii

2.8

2.9

2.5

2.3

2.1

2.3

142.8

4.61

0.083

0.10

Sept.

2.1

2.0

3.2

3.2

2.9

2.4

3.3

8.0

5.6

4.7

6.2

5.3

4.5

3.8

3.4

3.7

4.8

4.5

3.7

3.2

4.9

4.3

6.6

6.6

*9.1

5.8

4.5

4.2

3.7

3.7

133.9

4.46

O.081

0.09

Calendar year 1956: Max 1,380 Mln 2.1 Mean 98.6 Cfsm 1.78 In. 24.23

Water year 1956-57: Max 460 Mln 2.0 Mean 53.0 Cfsm 0.957 In. 12.98

Peak discharge (base, 910 cfs). No peak above base.

* Discharge measurement made on this day.

11, Dec
MERRIMACK RIVER BASIN 89

Contoocook River near Henniker, N. H.

Location. Lat 43°09 I 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 ml.

Records available. --October 1939 to September 1957.

Gage. Water-stage recorder. Altitude of gage Is 475 ft (from topographic map). Prior to 

Bee. 18, 1939, staff gage at same site and datum.

Average discharge. --18 years, 630 cfs.

Extremes . Maximum discharge during year, 3,030 cfs Jan. 24 (gage height, 9.56 ft); minimum daily, 37 cfs Sept. 2.

1939-57: 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. Plow regulated by powerplants and by Nubanusit Lake, Edward MacDowell Reservoir (see p. 109) 

since March 1950, Highland Lake, Jackman Reservoir, and other reservoirs above station.

Rating table, water year 1956-57, except periods of ice effect (gage 

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

4.1 

4.5 

5.0 

5.5 

6.0

36

67

129

220

340

7.0 

8.0 

9.0 

9.2

700

1,320

2,270

2,530

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

Gale

Oct.

183

269

267

*271

216

184

188

186

197

199

180

180

176

162

179

230

227

228

160

143

137

168

212

171

188

148

131

126

126

196

196

5,824

188

0.511

0.59

Nov.

190

162

144

104

*131

178

172

176

170

138

88

138

188

154

120

132

118

106

154

237

220

312

520

492

346

341

357

384

356

349

6,677

223

0.606

0.67

Dec.

245

193

224

252

225

226

239

310

388

403

*379

1 476

920

1,100

742

715

884

830

660

630

646

488

315

436

574

740

780

710

578

400

450

16,158

521

1.42

1.63

Jan.

470

450

435

415

360

300

340

380

370

360

350

300

250

280

320

320

310

3OO

275

225

250

290

7OO

2,200

2,440

1,480

1,110

980

900

86O

800

18,820

607

1.65

1.90

Feb.

680

530

451

547

540

525

520

480

390

325

440

500

510

450

400

300

240

340

360

350

330

300

248

210

340

400

800

1.200

-

12,706

454

1.23

1.28

idar year 1956: Max 6,690 Min 42

Mar.

1,100

740

560

600

560

520

500

470

410

450

560

580

540

660

926

1,240

1,400

1,380

1,180

*1,060

956

1,030

992

830

926

896

836

830

830

bib

638

25,018

807

2.19

2.53

Apr.

655

812

1,120

1,120

998

1,120

1,500

1.550

1,330

1,200

1,200

1,160

1,050

932

920

866

715

690

680

598

495

454

488

457

433

412

370

340

406

4OO

24,451

815

2.21

2.47

May

*346

328

305

290

216

186

199

222

193

199

188

154

174

367

379

403

400

335

282

348

777

778

602

494

318

242

364

551

558

344

356

10,898

352

0.957

1.10

June

249

205

286

342

340

*315

299

210

180

207

226

201

184

159

145

129

123

170

178

159

157

150

145

126

171

188

292

263

249

238

6,286

210

0.571

0.64

July

143

129

137

162

171

154

134

114

*110

96

85

80

75

81

87

122

128

132

131

128

129

135

139

111

117

117

96

86

84

80

98

3,591

116

0.315

0.36

Aug.

113

108

101

99

102

98

101

*111

90

77

80

77

72

68

67

65

58

56

56

56

52

4-9

48

41

IP44

42

42

42

40

40

2,135

68.9

0.1H7

O.f2

Sept.

39

37

40

64

82

58

44

51

64

79

87

81

60

45

42

65

93

90

93

63

49

48

78

70

56

*51

49

46

46

64

1,834

61.1

0.166

0.19

Mean 704 Cfsm 1.91 In. 26.03

Water year 1956-57: Max 2,440 Min 37 Mean 368 Cfsm 1.00 In. 13.58

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 1, 5, 19, 26, 27, Dec. 30 to Jan. 24, Jan. 29 

to Feb. 1, Feb. 5-9, Feb. 11-22, Feb. 26 to Mar. 14. Discharge in cubic feet per. second p»r square 

mile and runoff in inches may not represent natural flow because of regulation.

505692 O - 59 - 7
90 MERRIMACK RIVER BASIN

Warner River at Davlsvllle, N. H.

Location.--Lat 43°15'05", long 71°43 I 50", on left bank 60 ft downstream from highway

bridge at Davlsvllle, Merrlmack County, 2£ miles northwest of Contoocook, and 2.4 miles 

upstream from mouth.

Drainage area. 146 sq ml.

Records available. October 1939 to September 1957.

e. Water-stage recorder. Altitude of gage Is 380 ft (from topographic map). Prior 

o Dec. 22, 1939, chain gage at bridge 60 ft upstream at same datum.

Average discharge. 18 years, 233 cfs.

Extremes. Maximum discharge during year, 604 cfs Apr. 7 (gage height, 5.63 ft); minimum, 

8.0 cfs Sept. 10, 11.

1939-57: Maximum discharge, 4,510 cfs Mar. 27, 1953 (gage height, 9.88 ft), from 

rating curve extended above 2,800 cfs by logarithmic plotting; minimum, 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, 

to 1948, slight diurnal fluctuation at low flow caused by mill above station.

Rating tables, water year 1956-57, except periods of loe effect (gage 

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

Oct. 1 to Apr. 6

3.4

3.6 

4.0

4.5 

5.0 

6.0

190

348

780

3.16

3.2

3.3 

3.5 

3.8

Apr. 7 to Sept. 3O

,0 4.2 

.6 4.6 

5.0 

6.0

115

203

333

780

Discharge, In cubic feet per second, water year October 1956 to September 1957

Prior

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

IS

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

*47

43

42

39

42

39

50

86

80

65

55

47

43

42

40

38

37

34

33

31

29

28

28

36

36

34

34

33

32

30

*30

1,283

41.4

0.284

0.33

Nov.

2S

28

2S

27

26

26

26

26

26

26

23

23

27

34

35

41

43

39

40

37

39

151

207

165

115

100

115

109

105

94

1,809

60.3

0.413

0.46

Dec.

78

78

74

70

65_

*70

70

113

140

155

155

198

293

334

254

280

315

295

260

260

227

210

185

212

239

220

200

215

195

165

140

5,765

186

1.27

1.47

Jan.

140

145

138

138

140

125

123

123

121

121

117

115

110

105

103

99

*98

96

92

91

91

96

270

527

554

463

405

352

313

277

245

5,933

191

1.31

1.51

Feb.

233

215

196

190

185

172

163

156

147

142

144

136

*127

123

115

111

109

107

105

101

98

94

91

91

92

111

280

470

-

4,304

154

1.05

1.10

Mar.

463

376

320

275

235

210

200

188

224

313

280

251

21S

245

330

440

514

*476

413

383

355

376

409

416

394

366

348

341

334

324

310

10,327

333

2.28

2.63

Apr.

293

313

416

402

376

476

590

540

478

444

440

423

415

390

349

314

289

276

262

253

243

*225

209

196

183

176

166

160

,153

155

9,605

320

2.19

2.45

May

16O

147

132

123

115

108

103

96

88

82

80

82

89

86

95

124

112

96

84

126

318

314

237

186

149

126

119

136

128

100

82

4,023

130

0.890

1.02

June

70

68

*79

75

64

56

56

55

48

43

36

36

34

34

34

34

33

33

32

44

34

29

30

27

30

84

162

121

92

77

1,650

55.0

0.377

0.42

July

59

44

35

38

45

53

44

*36

31

29

26

23

22

21

23

23

21

19

19

19

19

19

19

19

21

19

16

18

19

32

37

8iS8

28.0

0.192

0.22

Aug.

39

31

23

20

18

16

*15

14

12

TS

69

SI

54

47

47

43

37

31

28

26

23

21

19

18

16

15

13

14

14

13

13

828

26.7

0.183

0.21

Sept.

13

13

11

9.6

10

9.6

9.1

10

8.7

8.0

8.7

11

10

9.1

8.7

9.6

16

18

15

13

13

15

15

14

13

12

12

11

10

9. 6

345.7

11.5

0.079

0.09

Calendar year 1956: Max 2,260 Mln 11 Mean 241 Cfsm 1.65 In. 22.50

Water year 1956-57 = Max 590 Mln 8.0 Mean 128 Cfsm .877 In. 11.91

Peak discharge (base, 1,200 cfs). No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 25, 26, 29, 30, Dec. 1, 9-11, 16-20, Dec. 26 

to Jan. 2, Jan. 12-14, Feb. 27, 28, Mar. 4-7, 11.
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 Dlnglt Corner, 

2f miles southeast of Webster, Merrlmack County, and 6^ miles upstream from mouth.

Drainage area. 129 sq ml.

Records available. May 1918 to September 1920, February 1927 to September 1957. Publlshed as "near Contoocook" 1918-20, 1927-35. Records published for both sites October 1934 to September 1935.

Gage. Water-stage recorder at present site since Oct. 1, 1934. Altitude of ga^e Is

230 ft (from topographic map). Prior to Oct. 1, 1935, chain gage at site 5 miles downstream at different datum.

Average discharge. 32 years (1918-20, 1927-57), 213 cfs (adjusted to present site).

Extremes. Maximum discharge during year, 480 cfs Jan. 25 (gage height, 4.30 ft); minimum, 17 cfs Sept. 2; minimum daily, 18 cfs Sept. 1,2.

1918-20, 1927-57: 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 period of lee effect, 

which are good. 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 1956-57, except period 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 

4.5

135

241

381

550

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

72

66

61

59

61

61

67

99

125 

115

96

82

75

67

62

60

61

60

55

52

48

47

48

48

48

48

45

45 

42

42

*42

1,955

63.1

0.489

0.56

Nov.

41

40

40

41

40

40

40

39

38 

37

55

34

56

40

45

48

48

48

48

48

47

87

186

232

T62

121

108

102 

93

88

2,050

68.5

0.529

0.59

Dec.

67

79

70

67

56

71

66

80

130 

174

154

170

200

251

211

241

243

258

176

172

189

170

139

156

172

162

152

160 

160

128

106

4,630

149

1.16

1.53

Jan.

99

104

100

96

96

93

90

90

88 ' 87

S4

83

82

80

79

76

76

75

74

IS

73

74

115

290

440

432

546

268 

225

192

170

4,548

140

1.09

1.25

Feb.

154

144

135

128

126

121

116

112

108 

106

104

103

97

95

90

88

86

86

85

82

81

79

77

76

76

79

158

515

3,105

111

0.860

0.90

Mar.

391

378

305

254

189

162

148

157

150 

214

227

218

187

185

254

522

416

*432

368

308

273

275

305

322

305

281

260

253 

246

243

234

8,202

265

2.05

2.36

Apr.

223

230

311

381

354

546

400

426

394 

343

311

302

297

302

281

246

225

214

216

220

220

216

200

181

164

150

145

139 

133

126

7,672

256

1.98

2.21

May

121

116

109

102

99

95

89

85

80 

76

72

72

73

72

77

90

97

89

76

86

165

251

225

162

125

97

86

102 

120

105

84

3,290

106

0.822

0.95

June

73

67

*67

66

61

56

55

52

50

46

43

40

38

35

43

48

50

48

42

46

46

42

38

34

35

64

109

114 

103

88

1,697

56.6

0.459

0.49

July

75

61

48

44

46

64

86

*76

54 

46

42

39

36

55

35

38

39

36

32

28

26

24

23

IS

23

24

24

25 

50

62

152

1,371

44.2

0.545

0.40

Aue;.

152

97

67

48

41

56

*32

28

26 

32

47

85

105

85

59

48

41

35

31

27

25

22

22

21

IS

19

20

22 

21

21

20

1,332

4-5.0

0.335

0.58

Sept.

18

T5

20

25

26

27

28

28

28 

27

28

28

28

27

26

28

54

37

55

33

32

32

32

*35

37

35

31

27 

24

23

855

28.5

0.221

0.25

Calendar year 1956 : Max 2,050 Mln 22 Mean 212 cfsm 1.64 in. 22.41 

Water year 1956-57 : Max 440 Mln 18 Mean 111 Cfsm 0.860 In. 11.67

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Jan. 5-25.
MERRIMACK RIVER BASIN

Contoocook River at Penacook, N. H.

Location. Lat 43°17'10", long 71°36'00", on right bank at Penacook, Merrlmack County, 

half a mile upstream from mouth.

Drainage area. --766 sq ml.

Records available. October 1928 to September 1957. October 1928 monthly discharge only, 

published In WSP 1301.

Gage . . --Water-stage --W recorder. Datum of gage is 273.09 ft above mean sea level, datum of

1929.

Average discharge. 29 years, 1,259 cfs.

Extremes . --Maximum discharge during year, about 4,000 cfs Jan. 25; maximum gage height, 

5.29 ft Jan. 25 (affected by ice); minimum discharge, 72 ofs Sept. 4, 30; minimum daily, 

83 cfs Aug. 28, 29.

1928-57: 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. Plow 

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 1956-57, except periods of ice effect (gage 

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

1.6 

1.8 

2.1

95

159

252

450

840

1,540

3,400

5,820

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

3O

31

Ttatal

Mean

Cfsm

In.

Oct.

406

384

428

435

443

384

384

458

490

474

428

392

351

331

357

351

399

392

3S4

324

242

287

318

364

331

318

318

222

*264

282

311

11,252

363

O.474

0.55

Nov.

324

324

293

247

242

276

287

299

299

282

232

222

270

311

. 299

264

258

247

270

331

377

615

948

1,090

852

700

720

720

670

650

12,919

431

0.563

0.63

Dec.

560

482

458

460

*465

458

450

514

720

840

830

936

1,330

l.SSQ

1,590

1,480

1,560

1,600

1,400

1,280

1,210

1,120

864

912

1,150

1,270

1,330

1,300

1,200

920

800

31,369

1,012

1.32

1.52

Jan.

800

820

800

760

720

640

620

680

*690

670

660

600

540

550

580

580

570

560

540

480

470

540

750

2,700

3,900

3,300

2,480

1,900

1,740

1 , 64C

1 ' 54C

33,820

1,091

1.42

1.64

Feb.

1,340

1,170

924

864

988

988

936

888

780

660

680

*860

840

768

720

640

530

505

620

660

660

610

560

460

440

600

1,090

1,900

22,681

810

1.06

1.10

Mar.

2,340

2,070

1,600

1,340

1,200

1,100

1,050

1,000

920

1,000

1,100

1,350

1,280

1,300

1,680

2,300

2,800

*2,700

2,460

2,190

1,960

1,960

2,120

2,030

1,900

1,900

1,800

1,710

1,690

1,680

1,570

53,100

1,713

2.24

2.58

Apr.

1,320

1,540

2,000

2,210

2,070

2,370

2,820

2,820

2,670

2,410

2,320

2,250

2,180

1,980

1,800

1,730

1,560

1,410

1,370

1,340

1,210

*1,100

1,060

1,030

936

900

840

768

804

852

49,670

1,656

2.16

2.41

May

780

720

670

602

575

530

514

458

482

450

414

421

443

490

660

720

732

670

575

593

1,160

1,620

1,370

1,100

864

630

620

816

960

840

584

22,063

712

0.930

1.07

June

602

458

*474

548

557

530

522

49O

384

364

377

377

344

311

311

247

282

299

287

311

305

287

247

270

293

370

611

670

575

530

12,233

408

0.533

0.59

Jily

*458

351

287

258

318

337

337

337

287

247

222

198

176

159

163

176

180

222

207

202

180

207

207

202

202

193

185

159

185

207

264

7,313

236

0.308

0.36

Aug.

331

305

282

207

189

202

*189

176

168

180

202

270

311

282

242

222

193

180

137

108

111

133

148

152

108

89

85

83

83

87

111

5,566

180

0.235

0.27

Sept.

103

85

85

85

93

108

133

144

129

137

148

148

152

148

129

108

126

168

176

168

159

155

137

122

176

159

140

140

103

87

3,951

132

0.172

0.19

Calendar year 1956: Max 9,960 Min 103 Mean 1,327 Cfsm 1.73 In. 23.57

Water year 1956-57: Max 3,900 Min 83 Mean 729 Cfsm 0.952 In. 12.91

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 1, 4, 5, 10, 11, 18-22, Dec. 25 to Jan. 

Feb. 9, 11-13, 15-28, Mar. 3-16.
MERRIMACK RIVER BASIN 93

Soucook River near Concord, N. H.

Location. Lat 43°14'22", 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, Merrlmack County.

Drainage area. 76.8 sq ml.

Records available. October 1951 to September 1957.

Gage. Water-stage recorder. Altitude of gage Is 290 ft (from topographic map).

Average discharge. 6 years, 121 cfs.

Extremes. Maximum discharge during year, 398 cfs Mar. 16 (gage height, 7.42 ft); minimum, 

3.8 cfs Aug. 22-25, 29, Sept. 2.

1951-57: 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-height record, 

which, are fair.

Revisions (water years). WSP 1331: 1952(M).

Rating tables, water year 1956-57, except periods of Ice effect (gage

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

(Shifting-control method used June 28 to Sept. 30)

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

4.4

4.5 

5.0 

5.5 

6.0

17

23

58

106

166

4.1

4.2

4.3 

4.6 

5.0

3.8

6.5

10

24

52

5.5 99

6.0 158

7.0 317

7.5 415

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

31

Ttotal

Mean

Cfsm

In.

Oct.

33

28

27

27

33

33

60

99

69

54

46

40

37

35

33

31

29

28

40

30

28

23

31

57

61

46

39

34

31 

28

28

1,218

39.3

0.512

0.59

Nov.

28

*29

29

26

25

31

27

23

25

25

22

23

32

42

37

33

31

32

33

31

36

166 159-

102

81

75

85

89

82 

73

1,532

51.1

0.665

0.74

Dec.

54

51

48

46

43

*46

52

71

89

85

77

135

198

210 iJo155

178

145

127

126

117

100

92

104

158

158

128

135

120 

91

Q-l

O-i3,360

108

1.41

1.63

Jan.

80

82

84

84

80

76

74

74

74

72

70

70

68

66

64

*62

60

60

58

58

58

66

2OO

373

360

310

238

195

158

-I 00 -L£Q

125

3,627

117

1.52

1.76

Feb.

119

111

103

103

100

91

85

80

74

78

78

72

68

66

*64

62

62

61

60

58

56

53

51

52

53

65

220

360

-

2,505

89.5

1.17

1.21

Mar.

321

232

180

144

123

111

106

101

12Z

185

148

138

125

152

212

332

348

284

237

216

195

221

238

227

*202

186

175

169

159 

152

144

5,885

190

2.47

2.85

Apr.

134

177

263

198

183

313 3"0T

Z3Z

210

200

214

194

185

164

145

132

122

118

111

114

104

92

86

80

*74

73

71

68

65

62

4,485

150

1.95

2.17

May

57

52

47

46

45

42

40

38

37

33

39

42

43

40

50

84

6Z

48

42

53

165

117

85

69

53

44

*44

46

40

35

30

1,668

53.8

0.701

0.81

June

27

27

49

37

29

25

28

29

23

21

18

17

16

15

26

27

18

14

13

14

13

11

8.3

7.6

977

24

46

40

Z9

Z5

686.6

2Z.9

0.298

0.33

July

*20

17

14

17

20

26

19

15

13

13

12

11

10

10

9.0

8.3

7.6

6.9

6.5

a5.5

a4.8

a4.3

a4.0

a4.0

11

12

7.9

17

20 

31

33

409.8

13.2

0.17Z

0.20

Aug.

26

T6

12

9.7

S.7

7.9

6.9

*aG.2

aE.4

a7.0

11

16

13

9.7

7.6

6.9

6.5

6.2

E.6

4.8

4.3

3.8

378

3 .8

3.8

4.3

4.8

4.0

4.0 

4.3

4.3

23S.3

7.72

0.101

0.12

Sept.

4.0

3.3

475

4.3

*4.5

4.5

4.8

5.3

5.0

5.0

5.0

5.0

5.0

5.0

5.0

6.2

8.3

7.9

7.2

6.9

6.2

6.2

8.9

~?.7 15

7.9

7.2

6.5

6.2 

5.3

185.8

6.19

0.081

0.09

Calendar year 1956= Max 1,330 Mln 6.3 Mean 113 Cfsm 1.47 In. 19.98

Water year 1956-57: Max 373 Min 3.8 Mean 70.7 Cfsm 0.921 In. 12.50

Peak discharge (base, 700 cfs). No peak above base.

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measurement, weathe" records, 

and records for stations on nearby streams.

Note.--Stage-discharge relation affected by Ice Nov. 30, Dec. 1, 18, Jan. 1-23, Feb. 7-15, 27, 28.
94 MERRIMACK RIVER BASIN

Suncook River at North Chichester, N. H.

Location. Lat 43e 15'25", long 71 e 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 1957.

Gage. Water-stage recorder. Concrete control since Sept. 14, 1937. Datum of gage is 

329.35 ft above mean sea level, adjustment of 1912.

Average discharge. 36 years (1918-20, 1921-27, 1929-57), 241 cfs.

Extremes. Maximum discharge during year, about 950 cfs Jan. 24; miniirum, 1.9 cfs Sept. 29, 

30; minimum daily, 1.9 cfs Sept. 30. ^

1918-57: Maximum discharge, 12,900 cfs Mar. 19, 1936 (gage height, 15.27 ft, from 

floodmarks), 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. 4, 1926; minimum daily, 1.4 cfs Sept. 4, 1926.

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

 regulated by mills and reservoirs above station; regulation greater prior to 1949.

Revisions (water years). WSP 781: 1923(M). WSP 1231: 1919(M), 1920, 1922, 1924(M), 

1933-34 (M).

Rating table, water year 1956-57, except periods of Ice effect (gage 

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

3.27 

Z. 3

2.4

2.5

2.6 

2.8 

3.1

1.9 

2.4 

4.4

7.2

11

23

56

3.4 

3.7 

4.0 

4.5

5.0 

6.0

113 

195 

29O 

515 

700 

950

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

*67

59

58

55

64

76 

174

234

155

157

126

104

87

83

83

76

70

67

64

58

62

69

102

210

186

154

130

118

109 

100

91

3,288

106

0.675

0.78

Nov.

98

*98

89

87

89

80 

78

76

52

76

76

80

100

106

102

100

87

93

100

89

98

357

374

272

210

204

216

219

201 

175

4,112

137

0.873

0.97

Dec.

150

138

135

130

125

*120 

155

174

216

225

200

394

564

535

390

380

397

350

305

290

262

252

245

260

350

400

360

310

283

250 

210

8,536

275

1.75

2.02

Jan.

20O

205

210

210

200

190 

185

185

185

180

175

175

170

165

160

*155

150

150

145

TJF

145

160

400

900

850

720

640

560

490

430

9,215

297

1.89

2.18

Feb.

350

330

310

305

285

260 

240

225

210

220

220

200

195

180

175

170

168

165

160

155

150

145

140

140

145

160

65O

900

-

6,953

248

1.58

1.65

Mar.

750

60O

490

390

350

310 

290

276 355"

465

375

330

306

350

425

606

638

533

440

406

374

415

440

440

*402

366

354

342

334

330

326

12,803

413

2.63

3.03

Apr.

306

440

568 402"

370

546 

546

485

455

440

445

415

397

362

330

286

266

255

222

207

204

195

174

160

*130

123

116

116

113 

104

9,178

306

1.95

2.17

May

98

91

83

74

83

74 

64

58

56

55

56

67

74

70

91

157

126

100

87

109

250

201

152

120

93

83

*87

83

78

62

67

2,929

94.5

0.602

0.69

June

55

61

89

78

66

64 

69

64

62

61

51

50

50

47

45

45

48

42

5?

80

61

47

46

46

55

66

78

69

58

53

1,757

58.6

0.375

0.42

July

*49

44

45

47

50

48 

42

45

41

41

36

34

29

50

55

29

28

28

26

22.

24

28

26

27

28

28

28

47

62

64 

IT

1,168

57.7

0.240

0.28

Aug.

48

59

28

28

31

26 

23

 22

21

20

16

20

25

22

21

14

15

12

11

11

11

11

11

10

10

11

11

10

9.4

9.4

9.0

561.8

18.1

0.115

0.13

Sept.

8.3

8.7

9.4

9.8

*11

9.0 

11

To" 17

9.4

9.4

9.0

8.3

7.6

7.2

7.6

9.8

8.0

 6.3

5.7

5.7

3.2

5.1

5.5

3.1

2.7

2.5

2.2

2.1

1.9

212.5

7.08

0.045

0.05

Calendar year 1956 : Max 2,440 Min 20 Mean 275 Cfsm 1.75 In. 23.85

Water year 1956-57 : Max 900 Min 1.9 Mean 166 Cfsm 1.06 In. 14.37

Peak discharge (baae, 1,500 cfs). Ho peak above baae.

* Discharge measurement made on this day. 

Note. Stage-discharge relation affected by ice Nov. 30, Dec. 1, 3-5, 11, 15, 16, 18-20, 23, 24, 

26, 27, Dec. 30 to Mar. 7, Mar. 10, 11 (no gage-height record Jan. 23-27).
MERRIMACK RIVER BASIN 95

South Branch Piscataquog River near Goffstown, N. H.

Location. Lat 43 0 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 1957.

Gage. Water-stage recorder. Altitude of gage is 310 ft (from topographic map).

Average discharge. 17 years, 166 cfs.

Extremes. Maximum discharge during year. 986 cfs Jan. 24 (gage height, 6.06 ft); maximum 

gage height, 7.78 ft Jan. 23 (ice jam); minimum discharge, 3.5 cfs Sept. 1, 2. 10, 11.

1940-57: 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 or no gage-height record, 

which are fair. Some regulation at low flow caused by mill above station.

Rating tables, water year 1956-57, except periods of Ice effect (gage 

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

Oct. 1 to Feb. 26 Feb. 27 to Sept. 3O

3.2 22

3.4 38

3.7 72

4.5 247

5.0 425

6.0 950

2.9 

3.2

6.3

20

Mote. Same as preceding table above 4.O ft.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

25

26

27

28

29

30

31

Tbtal

Mean

Cfsm

In.

Oct.

17

17

*16

15

17

17

36

50

41

32

26

22

20

20

19

18

19

19

17

17

19

20

25

34

34

28

24

24

21

21

20

725

23.4

0.225

0.26

Nov.

22

24

24

24

22

*22

21

20

22

22

22

25

29

28

25

24

22

26

27

28

30

182

150

86

66

73

92

89

88

68

1,403

46.8

0.450

0.50

Dec.

62

62

58

56

52

48

49

76

107

*105

100

188

266

252

156

189

195

175

160

160

150

140

145

150

155

160

170

145

130

120

105

4,086

132

1.27

1.46

Jan.

105

110

loo

100

105

94

92

94

92

92

90

85

86

80

15

75

78

*77

76

76

76

130

530

938

836

550

350

275

220

185

160

6,032

195

1.88

2.16

Feb.

150

140

135

130

160

140

130

130

120

130

140

120

105

100

94

90

86

*83

90

90

87

83

SO

87

94

220

500

560

-

4,074

146

1.40

1.46

Mar.

375

240

195

170

150

130

125

118

222

340

270

203

175

241

320

523

488

366

296

266

241

273

279

266

238

214

200

*192

181

179

171

7,647

247

2.38

2.73

Apr.

161

184

232

186

205

488

441

313

276

269

296

279

263

229

197

176

158

145

136

126

118

109

104

97

91

86

84

84

88

84

5,705

190

1.83

2.04

May

*78

70

63

61

58

55

53

53

49

11

74

126

124

96

91

100

84

70

60

83

214

Iff

106

86

67

58

74

165

140

104

83

2,739

88.4

0.850

0.98

June

76

83

86

72

*57

45

43

39

34

30

27

25

23

23

22

20

18

19

22

35

37

25

20

15

ii

35

60

70

40

29

1,144

38.1

0.366

0.41

July

23

25

20

17

18

23

18

17

16

*15

14

13

12

12

12

12

11

11

10

9.0

8.6

7.8

7.2

6.9

6.6

6.0

6^J

15

52

31

31

476.1

15.4

0.148

0.17

Auf.

18

15

13

12

11

9.0

7.8

7.2

*7.2

7.2

6.9

6.9

6.3

5.7

5.4

5.1

4.8

4.5

4.2

4.2

4.2

4,0

4.0

5.1

5.1

5.4

4.8

4.2

4.2

4.5

4.2

211.1

6,81

0.065

0,08

Sept.

4.0

172

5.4

5.7

5^4

4.2

4.2

4.5

4.2

4.0

4.2

4.0

4.2

4.2

4.2

4.8

5.2

5.0

4.8

4.5

4.5

4.8

5.4

5.0

4.5

4.2

4.2

4.2

4.0

4.0

135.7

4.52

0.043

0.05

Calendar year 1956 : Max 2,400 Mln 7.9 Mean 184 Cfsra 1.77 In. 24. 07

Water year 1956-57 : Max 938 Mln 4.O Mean 94.2 Cfsm 0.906 In. 12. 3O

Peak discharge (base, 1,000 cfs).--Mo peak above base.
96 MERRIMACK RIVER BASIN

Piscataquog River near Goffstown, N. H.

Location.--Lat 43°01'00", 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. October 1939 to September 1957.

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. 18 years, 307 cfs.

Extremes. Maximum discharge during year, 1,210 cfs Jan. 24 (gage height, 6.15 ft); minimum daily, 4.6 cfs July 19, 23.

1939-57: 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, that of July 19, 23, 1957.

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. Flow regulated by powerplant above station.

Rating table, water year 1956-57, except periods of ice effect (gage 

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

3.3 

3.6

4.0 

4.5 

5.0 

5.5 

6.0

153

296

496

745

1,090

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1

Z

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

31

Total

Mean

Cfsm

In.

Oct.

30

39

57

24

38

26

74

~S4 206

112

41

105

7.9

7.9

69

61

70

57

27

36

9.4

67

46

62

43

aSS

a9.5

a40

a46

a65

a25

1,639.7

52.9

0.262

0.30

Nov.

a55

a62

a48

a!25

a70

a90

a60

a 90

58

53

52

92

103

74

66

63

34seise

80

35

338

291

124

67

206

138

118

155

122

3,061

102

0.505

0.56

Dec.

53

111

105

64

58

99

95

96

195

135

130

*358

567

392

254

306

356

306

202

277

222

247

163

334

309

355

321

301

378

176

88

7,053

228

1.13

1.30

Jan.

200

185

225

269

210

136

181

158

199

192

155

115

140

200

230

54

89

145

165

130

130

188

619

1,020

844

701

480

380

362

353

351

8,806

284

1.41

1.62

Feb.

210

149

180

228

235

290

268

300

11

105

220

225

240

205

90

81

140

115

160

160

165

125

100

115

138

349

725

870

-

6,199

221

1.09

1.14

Mar.

734

609

297

445

305

275

290

293

483

594

495

451

439

458

537

690

728

751

712

696

685

558

489

519

500

580

383

*397

389

291

234

15,307

494

2.45

2.82

Apr.

411

425

404

396

436

645

506

652

453

492

501

670

372

318

446

437

297

188

242

134

77

214

240

51

115

87

160

105

137

119

9,730

324

1.60

1.79

May

183

142

*70

76

36

131

84

10O

59

115

60

208

161

154

190

181

185

184

28~9.8

277

216

163

183

81

89

154

196

252

119

186

4,529.8

146

0.723

0.83

June

58

105

161

154

9.4

98

*117

103

8.2

45

34

77

44

20

9.8

25

40

26

51

36

27

5.4

22

25

29

56

78

108

77

41

1,689.8

56.3

0.279

0.31

July

56

49

41

21

128

5.1

5.6

18

18

49

9.8

32

19

13

16

18

20

36

4.6

58

5.1

29

4.6

4.8

5.1

5.4

5.6

5.6

29

64

10

785.3

25.3

0.125

0.14

Aug.

14

16

11

18

12

12

25

8.3

*9.0

27

9.8

10

19

9.8

30

 1217.9

6.8

6.8

7.9

8.2

8.2

7.9

6.2

6.6

7.6

9.4

8.2

8.6

7.9

7.9

468.0

15.1

0.075

0.09

Sept.

8.2

7.9

8.6

9.0

11

11

7.9

8.6

8.2

7.9

8.2

7.9

8.6

6.6

6.2

9.0

9.4

7.9

7.9

8.2

8.2

8.6

11

25

a9.8

a9.4

*78

7.6

7.9

8.9

342.6

11.4

0.056

0.06

Calendar year 1956: Max 3,560 Min 7.2 Mean 319 Cfsm 1.58 in . 21.49

Water year 1956-57: Max 1,020 Min 4.6 Mean 163 Cfsm O.807 in . 10.96

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of recorded range in stage and powerplant 

records.

Hote. Stage-discharge relation affected by ice Dec. 26, Dec. 31 to Jan. 3, Jan. 5, 11-15, 18-21, 

27, 28, Feb. 3, 5-16, 18, 21-24, 27, 28, Mar. 5, 6, 11.
MERRIMACK RIVER BASIN 

Merrimaek River near Goffs Falls, below Manchester, N. H.

97

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 Falls, Hillsboro County, and 2.3 miles downstream from 

Piscataquog River.

Drainage area. 3,092 sq mi.

Records available. October 1936 to September 1957. October 1936 monthly discharge only, 

published in WSP 1301.

Qage. Water-stage recorder. Altitude of ga,ge is 105 ft (from topographic map). 

Average discharge. 21 years, 5,312 cfs.

Extremes . Maximum discharge during year, 13,100 cfs Jan. 25 (gage height, 7.12 ft); minimum daily, 147 cfs Sept. 2.

1936-57: Maximum discharge, 102,500 cfs Sept. 23, 1938 (gage height, 25.87 ft), 

from rating curve extended above 48,000 cfs on basis of computations of flow over dam 

at gage heights 25.87 and 35.19 ft; minimum daily, that of Sept. 2, 1957.

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 ice effect, 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 109, 81, 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 1956-57, except periods of ice effect (gage 

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

1.1 

1.5 

2.0 

2.5 

3.0

139

255

454

725

1,110

3.5 

4.0 

5.0 

6.0 

7.0

1,630

2,360

4,780

8,200

12,500

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

IS

16

\7

18

19

20

21

22

23

24 

25

26

27

28 

29 

30

31

Total

Mean

Cfsm

In.

Oct.

2,280

2,220

*2,230

2,140

2,260

2,050

1,660

3,480

4,200

4,150

3,130

2,630

2,220

1,640

2,250

2,100

2,200

2,060

2,020

1,790

1,070

2,010

1,980

2,300 

2,260

2,180

2,380

1.050 

1,750

1,780

1,810

69,280

2,235

0.723

0.83

Nov.

2,160

2,290

2,160

2,240

2,2OO

*1,860

1,980

2,190

2,060

1,620

1,040

1,990

1,990

1,970

1,990

2,000

2,190

1,920

2,570

2,040

2,030

2,950

6,290

6,180 

4,990

3,920

3,640

3,550 

3,220

3,330

80,360

2,679

0.866

0.97

Dec.

2,830

2,280

2.180

2,450

2,290

2,520

2,550

3,520

5,170

5,880

5,810

4,750

5,020

6.110

5,250

5,690

5,660

6,070

4,790

4,510

4,660

4,890

4,570

4,750 

4,650

5,660

4,990

5,150 

4,780

b3,400

b3,500

130,090

4,196

1.36

1.56

Jan.

b3,75O

b3,500

b3,700

3,950

4,180

3,880

b3,600

3,760

4,100

4,270

3,90O

3,730

3,290

5,660

3,700

3,910

3,970

3,900

3,860

2.920

5,600

4,010

b5,OOO

b9,300 

12.100

10,800

8,760

7,520 

6,450

6,110

5,980

155,160

5,005

1.62

1.87

Feb.

5,530

5,020

4,720

4,460

4,640

4,810

4,530

4,510

3,890

5,210

4,030

3,850

3,720

3,420

5,170

3,070

2,690

2,860

2,710

2,470

*3,010

2,480

2,390

1.960 

2,230

2,810

4,440

8,520

104,950

5,748

1.21

1.26

Mar.

10.200

8,800

7,010

6,210

5,430

5,020

4,460

5,860

4,570

5,750

5,430

5,140

4,940

4,920

5,200

7,150

9,040

8,600

8,050

7,550

7,150

6,850

6,450

6,900 

7,010

6,480

6,140

6,040 

5,940

5,590

5,460

197,320

6,365

2.06

2.37

Apr.

4,870

5,280

6,380

8,320

7,710

7,820

8,400

8,880

8,400

7,300

7,550

7,010

6,690

6,580

6,380

5,780

5,140

4,960

4,770

4,540

5,240

7,300

8,320

6,110 

5,880

5,500

4,780

4,410 

4,960

4,260

189,520

6,517

2.04

2.28

May

4,160

5,710

*3,740

2,950

2,200

2,610

2,35O

2,250

2,050

2,470

1,910

1.900

2,510

2,510

2,610

2,960

3,650

3,060

2,550

3,400

3,580

5,270

5.490

4,730 

3,010

2,920

3,020

2,970 

3,270

2,470

3,020

94,840

3,059

0.989

1.14

June

2,510

1,680

2,570

2,240

2,150

2,070

1,980

2,040

1,570

1,900

1,700

1,590

1,660

1,610

1,100

784

1,550

1,500

1,500

1,310

1,140

1,100

565

1,250 

1,580

1,540

2,120

2.750 

2,540

1,920

50,899

1,697

0.549

0.61

July

2,290

2,370

1,500

952

2,550

2,490

5.850

3,240

2,360

*1,980

2,040

1,920

1,800

986

1,240

1,160

1,140

1,180

1,210

1,070

454

1,150

1,280

1,160 

1,090

1,080

937

408 

1,290

1,690

1,660

49,487

1,596

0.516

0.60

Auf.

lj.510

1,510

922

568

1,250

1,080

1,000

967

968

736

575

1,430

1,500

1,290

1,100

1,030

515

372

1,190

930

850

787

786

448 

526

1,010

836

866 

886

861

688

28,385

916

0.296

0.34

Sept.

234

147

756

889

816

762

576

390

956

818

914

845

845

422

257

970

1,090

1,070

904

784

350

222

875

1,670 

1,290

1,120

850

362 

298

896

22,358

745

0.241

0.27

Calendar year 1956: Max 33,500 Min 492 Mean 5,361 Cfsm 1.73 In. 23.61

Water year 1956-57: Max 12,10O Min 147 Mean 3,213 Cfsm 1.04 In. 14.10

Peak discharge (base, 22,000 cfs). No peak above base.

* 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 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 Massabesic Lake.

Drainage area. 27.8 sq mi.

Records available. January 1938 to September 1957.

Gage. Water-stage recorder and concrete control. Datum of gage Is 252.60 ft above mean 

sea level (city of Manchester bench mark).

Average discharge. 19 years, 40.4 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 102 cfs Oct. 24 (gage height, 1.33 ft); minimum, 

0.2 cfs Aug. 29 to Sept. 2, Sept. 6-16, 18-22, 24.

1938-57: 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 except those for period of no gage-height record, which Is fair. 

Flow regulated by Tower Hill Pond (see p. 109). Some diurnal fluctuation prior to 

1951 by mill above station.

Revisions (water years). WSP 891: 1939. WSP921: Drainage area. VJSP1301: 1939(M).

Rating table, water year 1956-57 (gage height, in feet, 

and discharge, in cubic feet per second)

0.07 

.1 

.2 

.3 

.4

0.2 

.3 

1.0 

2.4 

4.9

0.5 

.7

1.2

1.5

8.7

21

40

79

139

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

2.6

2.2

3T

15

20

29

38

41

41

39

41

38

36

35

35

35

34

41

68

79

84

91

94

96

S3

86

79

68

60 

52

45

i, 521.0

49.1

-47.1

Nov.

39

*33

28

24

24

36

39

39

38

37

35

33

31

30

27

25

22

22

21

18

16

2T

28

25

20

22

33

36

31 

26

862

28.7

-17.2

Dec.

22

19

17

16

15_

15

15

15

18

*19

19

25

35

41

25

31

30

28

24

22

20

19

19

19

24

28

29

28

29 

30

3O

736

23.7

+11.9

Jan.

31

31

30

29

28

28

29

28

28

28

28

27

26

*24

a23

a23

a22

a22

21

21

21

23

48

79

88

82

74

67

61 

58

54

1,182

38.1

 (-3.89

Feb.

50

46

44

42

42

40

38

36

34

35

36

36

*34

31

29

28

27

23

16

15

14

13

12

13

It

19

45

64.

-

876

31.3

+7.13

Mar.

60

48

40

34

28

25

23

23

32

46

49

46

44

49

56

67

74

73

70

66

64

63

64

63

*59

56

55

54

52 

52

55

1,590

51.3

+15.4

Apr.

51

42

44

41

38

54

61

54

48

45

46

45

42

39

62

39

28

25

25

22

21

19

17

15

14

23

16

14

13

12.

1,015

33.8

+20.9

May

*11

9.7

8.7

7.9

7.5

7.1

6.7

6.7

5.9

5.5

7.1

12

16

15

15

19

19

16

13

14

25

27

23

17

13

10

9.7

15

17

15

12

406.5

13.1

+7.94

June

10

11

13

12

*12

11

11

18

19

T6

8.4

5.5

3.7

3.2

2.8

2.2

1.8

1.7

1.8

2.2

2.0-

1.8

1.7

1.4

1.4

1.4

1.5

1.4

1.5

1.3

181.5

6.05-

-0.31

jay

1.1

1.1

*.8

1.0

1.2

1.8

1.7

1.7

1.5

1.5

1.4

1.5

1.5

1.4

1.3

1.0

.9

.8

.7

.ii

.6

.6

.6

.6

.6

.6

.6

.7

.8

.8

1.3

32.3

1.04

-1.35

Aug.

1^4.

1.1

.9

.8

.7

.6

.6

.6

.6

.6

.6

*.6

.5

.4

.4

.6

1.1

.4

.3

.3

.3

.3

.4

.4

.4

.4

.4

.3

,2.

.2

.2

16.6

 0.54

-1.00

Sept.

~0.2

.3

.6

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

.2

.2

*.2

.2

.2

.3

.2

12

19

19

19

19

18

111.6

3.72

-5.78

Adjusted for change in contents in Tower Hill Pond*

Mean 

Cfsm 

In.

1.94 

0.070 

0.08

11.6 

0.417 

0.46

Calendar year 1956 : 

Water year 1956-57 :

35.6 

1.28 

1.48

42.0 

1.51 

1.74

38.4 

1.38 

1.44

66.7 

2.40 

2.77

Observed

54.7 

1.97 

2.20

21.0 

0.755 

0.87

Max 375 Kin 0.3 Mean 47.1 

Max 96 Mln 0.2 Mean 23.4

5.75 

0.207 

0.23

-0.31 

-0.011 

-0.01

-0.46 

-0.017 

-0.02

-2.05 

-0.074 

-0-08

AdJ isted

Mean 45.6 Cfrm 1.64 22.31 

Mean 22.8 Cfsm 0.820 11.16

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second. In Tower Hill Pond.

* Negative figures indicate that evaporation and seepage from reservoir exeee-ied inflow, 

a No gage-height record; discharge estimated on basis of weather records and recorded range in 

stage.
MERRIMACK RIVER BASIN 99

Souhegan River at Merrimaek, N. H.

Location. Lat 42°51'25", long 71 0 30'30", on left bank at head of Atherton Palls, at 

Merrimaek, Hillsboro County, 1^ miles upstream from mouth.

Drainage area. 171 sq mi.

Records available.--July 1909 to September 1957.

Gage Water-stage recorder. Datum of gage is 160.58 ft above mean sea level, unadjusted 

Tlevels 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 gage at 

present site and datum.

Average discharge. 48 years, 286 efs.

Extremes. Maximum discharge daring year, 1,830 cfs Jan. 24 (gage height, 6.00 ft); minimum, 14 efs Sept. 11, 13, 15, 16.

1909-57: Maximum discharge, 16,900 efs 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 below 40 efs, which are good, and thos? 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 

 area: WSP 781: T524(M). WSP 1231: 1914-15(M), 1917(M), 1919-23(M), 1927-28(M), 

1929, 1930-34(M).

Rating tables, water year 1956-57, except periods of Ice effect (gage 

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

Oct. 1 to Jan. 24 Jan. 25 to Sept. 30

2.1 26

2.2 32

2.5 73

3.0 179

3.5 350

4.0 570

5.0 1,120

6.0 1,830

1.95 

2.0 

2.3 

2.6

3.0 179

3.5 350

4.0 570

5.0 1,120

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

35

35

31

30

*35

35

53

70

67

86

62

42

53

50

41

41

39

38

37

40

39

36

38

39

42

45

71

53

40

*38

35

1,398

45.1

0.264

0.30

Nov.

35

39

45

44

43

41

40

40

42

45

46

46

50

52

51

50

48

54

58

60

64

230

250

ISO

100

no

140

135

130

100

2,318

77.3

0.452

0.50

Dec.

94

94

90

85

80

*73

75

100

160

160

150

250

400

430

550

310

320

290

260

260

240

225

230

240

260

280

240

230

210

190

170

6,446

208

1.22

1.40

Jan.

170

180

165

165

170

155

150

155

150

150

145

140

140

130

120

115

115

110

no

110

110

200

640

1,640

928

630

400

350

300

260

230

8,533

275

1.61

1.86

Feb.

240

230

220

210

250

220

210

210

205

210

230

200

175

165

155

150

145

140

165

*160

150

145

140

150

170

400

800

1,000

-

6,845

244

1.43

1.49

Mar.

700

470

390

340

300

270

250

230

3§0

600

480

386

338

408

538

685

760

585

498

435

399

*426

422

350

326

358

326

303

296

264

237

12,760

412

2.41

2.78

Apr.

234

289

404

346

326

667

795

585

520

480

516

494

471

382

362

350

322

296

250

237

214

185

221

202

191

176

182

135

*155

171

10,158

339

1.98

2.21

May

160

145

140

135

102

106

124

108

106

102

140

307

362" 466

286

300

282

208

133

147

436

399

296

240

179

110

126

260

275

130

6,518

210

1.23

1.42

June

115

86

*110

141

138

108

96

104

71

62

71

68

62

60

60

56

41

42

46

58

60

50

46

38

37.

48

72

76

74

58

2,160

72.0

0.421

0.47

July

50

64

47

35

36

41

36

33

31

31

*29

28

27

27

25

23

22

21

20

20

zo

20

20

20

20

20

24

66

52

40

44

992

32.0

0.187

0.22

Aug.

4034"

30

28

28

27

*25

27

23

25

25

23

22

21

21

20

19

18

19

19

19

18

18

Is

21

22

20

18

IS

IS

701

22.6

0.132

0.15

Sepb.

17

17

17

17

17

18

17

16

16

*15.

15

15

15

15

15

16

18

17

17

16

16

17

IS" 19

16

15

15

15

15

15

487

16.2

0.095

0.11

Calendar year 1956: Max 5,380 Mln 23 Mean 316 Cfsm 1.85 In. 25.16

Water year 1956-57: Max 1,640 Mln 15 Mean 163 Cfum 0.953 In. 12.91

Peak discharge (base, 2,250 cfs). No peak above base.

* Discharge measurement made on this day.

Note. No gage-height record Oct. 1-4, Nov. 3 to Jan. 18, Jan. 22, 23, Feb. 9-13, Feb. 21 to 

Mar. 11; discharge estimated on basis of 1 discharge measurement, weather records, recorded range 

in stage when available, and records for Warner River at Davisville and South Branch Plscataquot 

River near Qoffstown. Stage-discharge relation affected by Ice Jan. 19-21, Jan. 27 to Feb. 8, 

Feb. 14-20, and at times during periods of no gage-height record.
100 MERRIMACK RIVER BASIN

North Nashua River near Leominster, Mass.

Locatlon.--Lat 42°30'06", long 71 C 43'23", on right bank 1 1/3 miles upstream from Wekepeke 

Brook, 2| 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 1957.

Gage.--Water-stage recorder. Datum of gage is 270.04 ft above mean sea level, datum of 

"1929.

Average discharge.--22 years, 195 cfs.

Extremes. Maximum discharge during year, 1,730 cfs Jan. 23 (gage height, 5.77 ft); minimum, 18 cfs June 24; minimum daily, 22 cfs Sept. 2.

1935-57: 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. 2?, 1948; minimum 

daily, 22 cfs Sept. 27, 1936, Sept. 2, 1957.

Remarks. Records good. Plow 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 Pitchburg.

Rating tables, water year 1956-57 (gage height, in feet, and discharge,

In cubic feet per second) 

(Backwater from debris Oct. 1-29, Nov. 7 to Jan. 21)

Oct. 1 to Jan. 23

1.4 44

1.7 77

2.0 119

2.5 215

3.0

4.0

5.0

350

740

1,260

1.2 

1.5 

2.0

Jan. 24 to Sept. 30

22

46

115

2.5 215

3.0 350

4.0 74O

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Oct.

*58

58

62

69

67

58

110

89

71

65

63

57

S3

50

46

56

60

64

52

52

45

47

83

76

67

61

55

47

*50

54

55

1,900

61.3

0.573

O.S6

Nov.

77

118

103

72

70

64

6O

65

70

60

48

53

65

72

56

60

52

62

56

66

73

254

158

112

66

153

160

131

112

*86

2,654

88.5

0.827

0.92

Dec.

89

93

70

75

90

108

134

121

110

118

89

228

258

260

200

270

302

238

177

173

171

164

169

183

222

208

169

173

171

152

150

5,135

166

1.55

1.78

Jan.

130

120

118

114

110

98

112

114

112

112

112

103

101

94

98

104

103

100

93

B6

1O1

185

1,240

632

420

305

252

240

22O

202

197

6,128

198

1.85

2.13

Feb.

195

187

176

232

208

187

185

182

170

215

215

174

152

156

156

126

113

126

115

110

*105

107

101

94

110

160

367

240

-

4,664

167

1.56

1.62

Mar.

197

182

187

193

168

156

164

193

337

302

252

228

215

250

262

372

308

278

245

238

252

265

235

215

230

206

20O

185

176

162

144

6,997

226

2.11

2.43

Apr.

*164

216

225

191

326

659

522

402

410

371

388

364

335

278

260

222

213

202

182

154

135

164

146

128

129

146

124

102

TTT

124

7,399

247

2.31

2.57

May

112

*102

104

90

92

8O

90

90

78

84

233

290

252

191

187

193

162

131

101

160

272

204

154

139

105

104

129

129

*110

92

81

4,341

14O

1.31

1.51

June

74

74

84

84

76

65

76

69

57

66

58

6O

58

57

56

44

45

50

101

140

81

64

53

40

60

78

113

129

112

48

2,172

72.4

O.677

0.75

July

62

94

66

30

49

46

29

44

37

*40

41

39

44

43

40

48

48

46

48

46

33

31

48

49

48

48

44

33

41

53

53

1,421

45.8

0.428

0.49

Aug.

49

46

43

47

*41

44

44

44

47

44

32

36

44

43

43

44

40

29

33

44

45

44

45

40

42

46

49

47

47

47

43

1,332

'43.0

0.402

0.46

Sept.

32

22

31

46

*53

46

42

32

28

42

44

43

49

46

27

38

64

16

44

44

41

30

31

41

40

40

39

37

26

24

1,168

38.9

0.364

0.41

Calendar year 1956: Max 2,620 Min 42 Mean 232 Cfsm 2.17 In. 29.55

Water year 1956-57: Max 1,240 Min 22 Mean 124 Cfsm 1.16 In. 15.73

Peak discharge (base, 1,000 cfs). Jan. 23 (12:30 to 1:15 p.m.) 1,730 cfs (5.77 ft). 

* Discharge measurement made on this day.
MERRIMACK RIVER BASIN 101

Rocky Brook near Sterling, Mass.

Location.~Lat 42°26'57", long 71°48'10", on right bank 150 ft downstream from bridge on 

Seaman Road, 0.7 miles upstream from mouth, and 2£ miles west of Sterling, Worcester 

County.

Drainage area. 2.28 sq mi.

Records available. October 1946 to September 1957.

Gage. Water-stage recorder and concrete control. Altitude of gage Is 505 ft (from topographic map).

Average discharge. 11 years, 3.71 cfs.

Extremes. Maximum discharge during year, 34 cfs Jan. 23 (gage height, 3.18 ft); minimum, 

0.003 cfs Aug. 24, 27.

1946-57: Maximum discharge, 395 cfs Sept. 11, 1954 (gage height, 4.58 ft), from 

rating curve extended above 56 cfs; minimum, that of Aug. 24, 27, 1957.

Remarks. Records good except those for periods of shifting control, ice effect, or no 

gage-height record, which are fair. Flow regulated by reservoir from 1949 to 1955.

Rating tables, water year 1956-57, except periods of ice effect or shifting 

control (gage height, in feet, and discharge. In cubic feet per second)

Oct. 1 to Feb. 26 Feb. 27 to Sept. 30

1.8 

1.85

1.9

2.0

2.1 

2.E

0.05 

.11 

.EO 

.48 

.94

1.55

2.3 

E.4 

E.6 

E.8 

3.0

2.45

3.7

7.4

13.1

E2

1.7

1.75

1.8

1.85

1.9

0.01 

.04 

.12 

,E7 

.50

2.0 

E.I 

2.2 

2.4 

2.6

1.15

2.05

3.2

6.9 

13.1

Discharge,, in cubic feet per second, water year October 1956 to September 1957

Day

1

E

3

4

5

6

7

8

9

10

11

IE

13

14

15

16

17

18

19

EO

21

E2

E3

E4

E5

26

E7

E8

E9

30

31

Total

Mean

Cfsm

In.

Oct.

0.14

.18

.EE

.3E

.48

.69

1.3

.84

.48

.4E

.4E

.38

.38

.35

.32

.26

.14

.07

.08

.11

.14

.22

1.20

1.06

.52

.42

.42

.38

.35

.35

.35

12.99

0.419

0.184

0.21

Nov.

0.60

.99

1.04

.64

.48

.45

.42

.38

.45

.45

.38

.42

.52

.48

.45

.38

.35

.61

.69

.60

1.11

4.2

1. 6

.88

.64

2.9

2.2

1.35

1.04

.88

27.58

0.919

0.403

0.45

Dec.

0.74

.64

.64

.69

.74

.69

.78

.83

1.04

.99

1.17

5.9

5.6

4.4

4.2

5.2

4.3

3.6

3.0

2.8

2.8

2.9

3.2

3.3

3.4

2.8

2.6

2.7

2.8

2.6

2.35

79.40

2.56

1.12

1.30

Jan.

2.15

2.0

1.85

1.8

1.8

1.7

1.7

1.7

1.65

1.7

1.65

1.65

1.6

1.5

1.4

1.4

1.35

1.35

1.35

1.35

1.5

3.0

MJ,

4.8

3.4

3.0

2.9

2.7

2.6

2.45

2.25

80.35

2.59

1.14

1.31

Feb.

2.25

2.15

2.05

2.35

2.35

2.15

2.0

2.0

2.05

2.8

2.45

1.9

1.8

1.8

1.7

1.7

1.7

1.65

1.65

1.65

1.55

1.55

1.7

1.8

2.05

3.3

9.8

4.3

-

66.20

2.36

1.04

1.08

Mar.

3.1

2.8

2.5

2.15

1.85

1.75

T7§5

2.4

7.8

6.0

3.8

3.3

3.3

3.8

3.6

6.1

4.2

*3.5

3.2

3.0

3.9

4.6

3.8

3.2

2.7

2.7

2.5

2.35

2.25

2.35

2.25

102.60

3.31

1.45

1.67

Apr.

2.05

3.9

3.3

2.6

9.8

12.0

5.3

4.1

4.6

5.6

 5.8

4.8

4.1

3.3

3.1

3.0

2.8

2.7

2.6

2.5

2.35

a2.3

aZ.Z

a2.1

2.05

2.15

2.15

2.05

1.75

1.55

108.60

3.62

1.59

1.77

Calendar year 1956: Max 38 Mln 0.04 Mean 3.94

May

1.5

1.3

1.23

1.23

1.23

1.15

1.07

.93

.73

.64

4.9

4.4

3.0

2.05

2.2

3.1

1.85

1.55

1.4

2.05

3.1

1.85

1.4

1.00

.80

1.7

2.15

1.5

*.93

.67

.55

53.16

1.71

0.750

0.87

June

0.50

.50

.45

.40

.31

.20

.12

.12

.12

.09

.05

735

.05

.05

.05

.05

.05

.05

.59

2.5

.55

.27

.20

.06

.14

.12

.66

.55

.35

.27

9.57

0.319

0.140

0.16

Cfsm 1.73

July

"Tie 0.27

.06

.04

.04

.02

.02

.02

.01

.02

.02

.02

.02

.02

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.02

.02

.02

0.94

0.030

0.013

0.02

Aug.

~75T C.01

.01

.01

.02

.02

.01

.01

.01

.01

.02

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.02

0.35

0.011

0. 0048

0.006

In. 23.54

Sept.

0.02

.02

.02

.02

*.Q1

.01

.01

.01

.01

.01

,04

.02

.02

.01

.01

.01

.02

.02

.01

.01

.01

.01

.01

.01

.01

.02

.02

.02

.02

.02

0.46

0.015

0.0066

0.008

Water year 1956-57: Max 19.1 Mln 0.01 Mean 1.49 Cfsm 0.654 In. 8.85

Peak discharge (base, 45 cfs).--No peak above base.

* Discharge measurement made on this flay.

a No gage-height record; discharge estimated on basis of weather records and recorded range In 

stage.

Note.--Stage-discharge relation affected by Ice Dec. 30 to Jan. 21, Jan. 24-28, 31, Feb. 12, 13. 

Shifting-control method used Oct. 1 to Dec. 12, Feb. 27.
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 1957.

Average discharge. 61 years, 188 cfs (adjusted to present drainage area).

Remarks. Flow regulated by Wachusett Reservoir and several ponds. Records adlusted for 

change in contents in and wastage from Wachusett Reservoir and diversions from Ware 

River and Quabbin Reservoir on Swift River. Entire flow, except wastage, diverted for 

use of Boston metropolitan district. uxvoibcu i uz

Cooperation. Records furnished by Water Division of Metropolitan District Commission. 

Revisions (water years). WSP 1051: 1928.

Monthly discharge and rainfall, water year October 1956 to Septemler 1957

Month

October. ............... ...... .

Mav

Runoff 

(millions of 

gallons)

1,058.1 

1,820.4 

3,612.9

57,574.3

4,028.4 

3,135.0 

5,159.2 

5,797.4 

2,738.6 

1,509.1 

546.8 

160.1 

151.5

29,717.5

Discharge per square mile

Millions 

of gallons 

per day

0.317 

.563 

1.082

1.461

1.2O7 

1.040 

1.545 

1.794 

.820 

.467 

.164 

,O48 

.047

.756

Cubic feet 

per second

0.490 

.872 

1.67

2.26

1.S7 

1.61 

2.39 

2.78 

1.27 

.723 

.253 

.074 

.073

1.17

Runoff 

(Inches)

0.56 

.97 

1.93

30.76

2.15 

1.68 

2.76 

3.10 

1.46 

.81 

.29 

.09 

.08

15.88

Rainfall 

(inches)

3.O4 

3.83 

4.40

49.19

2.79 

1.67 

2.74 

3.29 

4.01 

3.34 

.83 

1.98 

1.43

33.35
MERRIMACK RIVER BASIN 103

Squannacook River near West Oroton, Mass.

Location.---Eat 42°38'03", long 71°39'30", on left bank 0.7 mile downstream frcm Trout 

Brook and 2.7 miles northwest of West Oroton, Middlesex County.

Drainage area. 62.8 sq mi, excludes 2.10 sq mi above outlet of Pitchburg Reservoir. 

Records available. October 1949 to September 1957.

Gage. Water-stage recorder. Datum of gage is 244.27 ft above mean sea level, datum of 

1929.

Average discharge. 8 years, 119 cfs.

Extremes. Maximum discharge during year, 692 cfs Jan. 24 (gage height, 4.86 ft); minimum 

daily, 5.1 cfs Aug. 17-19, 24.

1949-57: Maximum discharge, 4,010 cfs Oct. 16, 1955 (gage heighb, 8.04 ft), from 

rating curve extended above 2,200 cfs by logarithmic plotting; minimum daily, 4.3 cfs 

Aug. 14, 1950.

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

regulated by mill above station. Entire flow from 2.10 sq mi above outlet of Pitchburg Reservoir diverted for municipal supply of Pitchburg during most year?.

Rating table, water year 1956-57, except periods of ice effect (gage 

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

5.1

5.6

12

27

61

2.8 

3.2 

4.0 

5.0

112

182

366

760

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

18

16

15

18

17

27

H

31

24

21

18

18

17

16

16

16

17

15

15

15

*15

19

21

21

19

2O

19

18

16

16

589

19. 0

0.303

0.35

Nov.

20

41

62

41

32

27

25

25

27

27

£3

22

23

23

23

21

2O

24

£5

24

27

82

~64 106

45

57

85

*74

58

50

1,203

40. 1

0.639

0.71

Dec.

42

39

39

37

36

35

36

49

58

55

47

84

149

167

98

128

169

136

98

92

85

82

85

85

109

112

88

85

82

b76

b66

2,549

82.2

1.31

1.51

Jan.

b65

61

56

57

59

52

53

56

55

56

b54

53

54

b50

47

47

49

47

b44

47

47

b57

b27O

616

338

204

156

133

120

b!05

b90

3,188

103

1.64

1.89

Feb.

94

9O

t>84

88

93

85

79

78

73

84

103

b8O

70

69

65

b61

63

61

61

*59

54

53

55

61

65

113

310

344

-

2,595

92.7

1.48

1.54

Mar.

210

156

133

109

93

89

89

89

156

289

190

163

138

163

184

230

266

210

163

145

140

165

156

138

125

104

106

104

100

1OO

103

4,6O6

149

2.37

2.73

Apr.

*94

97

138

117

122

337

361

234

196

194

223

221

2O2

172

149

133

123

115

109

104

102

*92

84

82

77

76

76

72

70

65

4,237

141

2.25

2.51

May

61

58

52

52

52

50

49

46

42

40

87

190

200

133

115

136

114

88

77

82

214

184

125

97

76

68

82

97

97

73

60

2,897

93.5

1.49

1.72

June

51

46

51

47

42

*38

36

36

32

29

24

25

23

23

23

23

21

20

*20

36

39

28

23

2O

18

20

28

37

31

27

917

30.6

0.487

0.54

July

22

19

17

17

16

16

15

14

14

14

12

12

12

12

12

11

11

10

11

11

11

10

10

1Q~9.8

10

12

13

12

*12

12

399.8

12.9

0.205

0.24

Aug.

12

12

11

11

11

10

10

9.8

10

9.5

11

8.4

5.8

5.4

5.6

5.4

5.1

5.1

5.1

6.4

5.6

6.4

6.1

5.1

6.6

9.5

8.8

8.1

6.4

6.6

7.2

246.0

7.94

0.126

0.15

Sept.

6.4

^~4 6.1

7.8

7.2

6.1

6.6

7.5

8.4

*9.1

9.5

8.8

10

12

8.1

8.1

12

11

8.8

8.1

7.8

7.8

7.5

7.2

6.6

6.6

6.4

6.1

6.1

6.1

238.2

7.94

O.126

0.14

Calendar year 1956: Max 2,410 Min 11 Mean 130 Cfsm 2.O7 In. 28.13

Water year 1956-57: Max 616 Min 5.1 Mean 64.8 Cfsm 1.03 In. 14. C3

Peak discharge (base, 70O cfs).--No peak above base.

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
MERRIMACK RIVER BASIN

Nashua River at East Pepperell, Mass.

Location. --La t 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 Worcester).

Records available . October 1935 to September 1957.

~Gage . Water-stage recorder. Datum of gage is 169.04 ft above mean sea level, datum of

Average discharge. 22 years, 535 cfs (adjusted for wastage into Nashua River).

Extremes . Maximum discharge during year, 2,080 cfs Jan. 24 (gage height, 5.41 ft); minimum daily, 9.0 cfs Oct. 1, Nov. 10.

1935-57: Maximum discharge, 20,900 cfs Mar. 20, 1936 (gage height, 19.1 ft, from

f loodmarks ) , 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 metro*)olitan district

and water diverted around station through plant of St. Regis Paper Co. Plow regulated

by powerplant above station. 

Revisions. --MSP 801: Drainage area.

Rating table, water year 1956-57, except periods of backwater from aquatic 

vegetation (gage height, in feet, and discharge, in cubic feet per second)

0.4

.6

.8

1.0

1.2

1.5

2.0 

2.5 

3.0 

4.0 

6.0

292

520

815

1,370

2,410

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

9.0

294

363

312

235

80

10

273

279

275

271

87

10

14

221

275

282

275

231

74

14

152

279

275

267

188

52

16

189

*178

190

5,670.0

183

8.05

NOV.

193

87

24

185

369

335

290

290

146

9.0

40

316

335

267

187

186

9.8

13

326

379

384

210

678

362

17

622

773

553

536

323

8,444.8

281

7.03

Dec.

263

84

305

374

350

*254

183

293

204

622

378

342

621

958

1,050

345

742

1,050

833

542

542

611

229

83

430

971

897

611

749

230

34

15,180

490

7.50

Jan.

194

666

689

472

350

138

258

366

362

362

358

304

13

272

378

371

367

363

256

78

278

375

892

1,860

1,380

1,380

694

1,060

1,020

791

713

17,560

566

7.04

Feb.

581

255

139

892

803

611

599

587

182

*71

875

803

593

465

504

186

13

527

407

359

355

595

249

12

254

498

941

1,060

-

13,416

479

7.48

Mar.

1,020

426

520

946

773

695

605

553

215

778

1.200

1,010

996

767

958

326

626

1,110

1,010

990

958

833

306

224

*909

952

725

617

498

247

24

21,817

704

7.11

Apr.

785

707

695

695

683

408

,220

,400

,130

,080

,080

,070

693

767

1,030

996

968

761

553

187

21

*662

719

647

445

393

215

12

262

339

20,623

687

6.95

May

339

339

415

131

14_

284

339

339

629

223

15

216

1.010

919

599

779

193

14

160

832

707

629

919

197

41

39

844

727

399

149

15

12,465

402

6.50

June

16

24

607

476

355

*193

190

61

15

127

175

175

197

256

67

19

271

214

204

207

335

67

14 220"

271

246

228

176

23

34

5,463

182

6.94

July

189

290

246

28

30

33

34

223

214

184

169

78

54

14

54

92

94

101

53

15

*20

153

94

101

178

103

15

19

210

200

109

3,397

110

7.O6

Aug.

88

84

40

14

71

116

74

*97

113

60

69

179

102

91

98

111

62

14

71

104

110

109

110

64

15

146

190

134

106

19O

65

2,897

93.5

6.85

Sept.

14

IS

69

129

120

~BT 204

18

66

130

122

118

115

62

14

90

138

122

116

204

66

14

87

119

108

119

116

60

14

56

2,686

89.5

6.51

Adjusted for wastage (figures represent net discharge from net drainage area)

Mean 

Cfam 

In.

175 

0.554 

0.64

274 

0.867 

0.97

Calendar year 1955: 

Water year 1956-57:

482 

1.53

1.76

559 

1.77 

2.04

472 

1.49 

1.55

697

2.21 

2.54

680

2.15 

2.40

396 

1.25 

1.44

Observed

Max 5,000 Mln 7.3 Mean 745 

Max 1,880 Min 9.0 Mean 355

175

0.554 

0.62

103 

0.326 

0.37

86.6 

0.274 

0.32

83.0 

0.263 

O.29

Adjusted

Mean 643 Cfam 2.03 In. 27.72 

Mean 348 Cfsm 1.10 In. 14.94

* 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 by Water Division of 

of Metropolitan District Commission.

Note. Backwater from aquatic vegetation Oct. 1 to Nov. 19, Nov. 22-26, Nov. 30 to Dec, 3, 

Dec. 6, 9, 16, 17, 23, 24, Dec. 30 to Jan. i, Jan. 6, 7, 12-14, 2O, 21, Feb. 2, 3, 9, 10, 16-18, 

23-25, Mar. 2, 9, 16, 23, 24, 30, 31, Apr. 6, 20, 21, 27-29, May 4-6, 10-12, 17-19, 24-26, May 3O 

to June 2, June 6, 8-1O, June 15 to Sept. 30.
MERRIMACK RIVER BASIN 105

Assabet River at Maynard, Mass.

Location. Lat 42°25'55", long 71°27'0l", on right bank at Maynard, Middlesex County 

ISO ft upstream from bridge on State Highway 27, 1.7 miles downstream from A<asabet 

Brook, and 7.1 miles upstream from confluence with Sudbury River.

Drainage area. 116 sq mi.

Records available.--July 1941 to September 1957.

Gage,--Water-stage recorder. Altitude of gage is 145 ft (from topographic map).

Average discharge. 16 years, 176 cfs.

Extremes. Maximum discharge during year, 696 cfs Apr. 7 (gage height, 4.18 ft)- minimum 

daily, 2.2 cfs Aug. 17-19, 29, 31, Sept. 1.

1941-57: Maximum discharge, 4,250 cfs Aug. 20, 1955 (gage height, 8.94 f';j- 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.

Revialons (water years).--WSP 1231: 1945-46.

Rating tables, water year 1956-57 (gage height, in feet, and discharge,

in cubic feet per second)

(Shifting-control method used Feb. 2-10, 13-26, Mar. 6-8, 

Apr. 17-28)

Oct. 1 to May 28 May 29 to Sept. 30

1.4

1.5

1.6 

1.8

2.1

2.2

4.7

8.6

21

53

2.5 

3.0 

3.5

4.0

4.1

122 

25O

410

615

660

1.4

1.5

1.6

2.2 

4.7 

8.6

1.8

2.0 

2.4

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

64

38

50

37

48

25

6.6

*63

73

66

66

42

29

3.6

51

40

50

39

37

20

2.4

26

53

64

64

55

30

7.1

58

47

46

1,300.7

42.0

0.362

0.42

Nov.

*69

64

28

3.0

52

67

65

56

57

33

2.6

44

58

57

54

55

23

4.5

51

56

60

76

108

96

80

*116

154 *Tso

92

77

1 , 908 . 1

63.6

0.548

0.61

Dec.

75

67

67

66

64

64

66

48

Hi

91

83

118

178

208

193

170

190

190

163

141

130

124

132

139

161

170

154

139

135

135

126

3,856

124

1.07

1.24

Jan.

118

106

96

92

89

87

89

91

87

*94

91

87

91

83

81

81

81

75

72

73

78

102

285

542

588

438

334

274

253

232

211

5,101

165

1.42

1.64

Feb.

202

193

180

188

193

193

182

172

168

196

232

214

185

165

*150

143

143

132

145

143

128

128

126

139

147

172

268

558

-

4,985

178

1.53

1.60

Mar.

354

286

250

226

202

180

172

178

286

426

486

375

286

247

229

256

304

*292

253

232

229

262

283

265

229

199

180

172

165

165

168

7,837

253

2.18

2.51

Apr.

161

163

188

196

214

405

'615 656

510

482

49'0

470

422

386

344

313

295

274

262

259

247

226

211

188

*175

170

161

161

152

141

8,937

298

2.57

2.87

May

122

112

100

96

98

1O2

98

94

91

85

122

199

244

214

211

145

172

156

132

126

143

150

132

132

139

132

128

114

*98

87

75

4,049

131

1.13

1.30

June

69

66

67

67

62

59

59

58

59

64

62

35

2.8

3.6

7.8

25

53

37

22

54

75

34

30

68

42

53

45

66

M

77

1,515.2

50.5

0.435

0.49

July

69

66

40

15

24

5.0

6.5

57

50

29

29

56

35

3.8

30

26

3.6

28

29

3.3

*3.3

3.8

4.4

32

3.8

31

3.3

2~3.0

31

30

774.8

25.0

0.216

0.25

Aug.

2.8

30

2.4

3.1

25

30

2.4

 2.6

30

3.0

2.8

3.2

30

2.6

2.6

31

2.2

272

2.2

2.6

2.6

3.0

23

2.6

2.8

?2

2.4

25

2.2

24

2.2

324.5

10.5

0.091

0.10

Sept.

2.2

2.4

20

3.3

3.0

18

2.6

2.4

2.6

2.8

3.3

*3.3

11

2.8

3.0

3.5

3.8

3.8

3.8

7.7

3.3

3.3

3.3

3.6

3.6

3.3

16

2.6

2.8

3.0

150.1

5.00

0.043

0.05

Calendar year 1956: Max 1,330 Min 1.0 Mean 214 Cfsm 1.84 In. 25.15

Water year 1956-57: Max 656 Mln 2.2 Mean 112 Cfsm 0.966 In. 13.08

Discharge measurement made on this day.

50569Z O - 59 - 8
106 MERRIMACK RIVER BASIN

Sudbury River at Framingham Center, Mass.

Location. Lat 42°17'30", long 71°26'40", at dam of Framlngham Reservoir No. 1, half a 

mile upstream from outlet of Farm Pond and three-quarters of a mile southwest of 

Framlngham Center, Middlesex County.

Drainage area. 75.2 sq mi since January 1881.

Records available. January 1875 to September 1957.

Average discharge. 82 years, 112 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.

Revisions (water years). WSP 1051: 1937.

Monthly discharge and rainfall, water year October 1956 to September 1957

Month

December. .......................

Mav

September. ......................

Runoff 

(millions of 

gallons)

355.7 

1,055.9 

2,514.2

30,225.1

3,207.5 

2,712.5 

4,036.2 

3,807.6 

1,456.7 

-261.8 

-673.0 

-633.8 

-560.7

17,029.0

Discharge per square mile

Millions 

of gallons 

per day

0.153 

.468 

1.079

1.098

1.376 

1.288 

1.731 

1.688 

.626 

-.116 

-.289 

-.268 

-.249

.620

Cubic feet 

per second

0.236 

.724 

1.67

1.70

2.13 

1.99 

2.68 

2.61 

.968 

-.180 

-.447 

-.414 

-.385

.959

Runoff 

(inches)

0.27 

.81 

1.92

23.11

2.45 

2.08 

3.09 

2.91 

1.12 

-.20 

-.52 

-.48 

-.43

13.02

Rainfall 

(inches)

3.02 

3.18 

5.28

47.36

2.42 

1.58 

2.87 

3.42 

3.66 

1.79 

1.34 

1.46 

.38

30.40

Mote.--negative figures Indicate that evaporation and seepage from reservoir exceeded Inflow.

Lake Cochituate Outlet at Cochituate, Mass.

Location. Lat 42°18'45", long 71 0 23'15", at outlet three-eighths o*" a mile north of

Cochituate railroad station, Middlesex County, and l£ miles upstream from Sudbury

River.

Drainage area. 17.40 sq mi since January 1937. 

Records available. January 1863 to September 1957.

Average discharge'. 94 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 1956 to September 1957

Month

September. ......................

Water year 1956-57 ............

(millions of 

gallons)

39 7

6,294.6

Discharge pe

Millions 

of gallons 

per day

.991

f square mile

Cubic feet 

per second

1.53

Runoff 

(inches)

20.80

Rainfall 

(Inches)

3 93

28.40

Note.--Negative figures Indicate that evaporation and seepage from reservoir exceeded Inflow.
MERRIMACK RIVER BASIN 107

Concord River below River Meadow Brook, at Loweil, Mass.

Location. Lat 42°38'12", long 71°18'09", on right bank 300 ft downstream from Rogers

Street Bridge at Loweil, Middlesex County, 0.3 mile downstream from River Meadiw Brook, 

and 0.8 mile upstream from mouth.

Drainage area. Total above gage, 405 sq mi; net above gage, 312 sq mi (diversion as 

needed from 92.6 sq mi for use of Boston metropolitan district).

Records available. October 1936 to September 1957. October, November 1936 monthly discharge only, published in WSP 1301.

. Water-stage recorder. Datum of gage is 67.41 ft above mean sea level, datum of 

929.

Average discharge. 21 years, 461 cfs (adjusted to net drainage area).

Extremes. Maximum discharge during year, 1,620 cfs Apr. 15 (gage height, 6.49 ft); minimuirTcraily, 4.0 cfs Sept. 29.

1936-57: Maximum discharge, 4,540 cfs Aug. 23, 1955 (gage height, 8.97 ft); minimum 

daily, that of Sept. 29, 1957.

Remarks. Records excellent except those for periods of ice effect or backwater from 

aquatic vegetation, which are good, and those for periods of no gage-height record, 

which are fair. 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 

Loweil. Plow regulated by mills above station.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

(t)

Oct.

288

267

267

263

271

239

311

350

311

316

320

311

267

263

284

263

232

204

185

145

156

185

182

251

288

320

307

311

320

279

279

8,235

266

135

Nov.

279

293

2S4

297

302

263

259

271

271

242

271

293

255

271

279

284

248

284

335

340

370

414

452

441

430

503

533

569

581

569

10,483

349

190

Dec.

509

503

497

468

436

397

360

275

288

350

*360

419

497

569

618

684

740

719

726

705

664

631

618

631

624

650

631

612

575

b560

b510

16,826

543

164

Jan.

b490

b530

b490

463

424

b420

441

446

452

458

b440

424

b450

b445

b445

b435

b430

b385

b330

b340

375

397

644

b840

994

1,090

1,140

1.150

1,110

1,050

1,000

18,528

598

265

Feb.

954

890

868

S60

838

808

800

785

780

820

830

b820

792

755

719

680

660

*650

618

599

587

551

533

540

560

587

657

733

-

20,274

724

237

Mar.

808

90O

920

930

920

900

850

800

820

880

920

960

1.000

980

920

920

940

960

950

940

960

*986

970

978

994

962

930

898

852

830

800

28,378

915

255

Apr.

815

800

778

785

815

930

1,100

1,270

1,380

1,470

1,510

1.520

1,510

1,480

1,440

1,370

1,300

1,210

1,130

1,040

970

922

852

800

748

*712

691

657

644

581

31,230

1,041

301

May

551

509

468

436

419

419

408

355

330

516

330

402

503

539

569

569

557

521

527

551

551

563

539

527

48O

491

*521

491

458

408

441

14,749

476

144

June

375

355

370

355

335

316

325

267

271

307

228

225

225

211

175

172

208

162

140

170

162

167

169

198

143

148

145

140

122

136

6,722

224

56.4

July

165

153

167

153

165

117

118

132

88

80

73

*65

71

19

103

74

77

79

74

60

36

75

65

63

51

55

54

35

63

59

62

2,651

85.5

15.0

Aug.

58

57

58

33

II

58

55

54

52

50

20

60

54

52

52

50

51

10

52

48

46

44

40

42

9.0

42

40

38

36

34

38

1,410.0

45.5

2.83

Sept.

10

11

40

34

34

29

30

7.0

34

36

36

34

32

34

9.0

 40

42

44

28

18

23

7.2

20

32

30

13

14

20

4.0

18

763.2

25.4

2.65

Adjusted for wastage and diversion (figures represent net discharge from net drainage area)

Mean 

Cfsm 

In.

131 

0.420 

0.48

159 

0.510 

0.57

Calendar year 1956: 

Water year 1956-57:

379 

1.21 

1.40

333 

1.07 

1.23

487

1.56 

1.63

660 

2.12 

2.44

740 

2.37 

2.65

331 

1.06 

1.22

Observed

(ax 2,960 Mln 79 Mean 793 

Hax 1,520 Kin 4.0 Kean 439

168 

0.538 

0.60

70.5 

0.226 

0.26

42.6 

0.137 

0.16

Adjusted

22.8 

0.073 

0.08

Kean 564 cfsm 1.81 In. 24.60 

Mean 292 cfsm 0.936 In. 12.72
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 1957.

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. 34 years, 7,210 cfs (adjusted for wastage into Merrimack River).

Extremes. Maximum discharge during year, 17,200 cfs Jan. 25 (gage height, 46.16 ft); minimum daily, 324 cfs Sept. 29.

1923-57: 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 periods of ice effect and those below 1,000 

cfs, which are good. Daily discharge includes water wasted from 210 sq mi in basins 

of Sudbury and South Branch Nashua Rivers and Lake Cochituate. 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 

109, 81, for description and month-end usable contents of many of these reservoirs.

Rating table, water year 1956-57, except periods of ice effect (gage 

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

41.1

41.3

41.5

42.0

303

475

698

1,520

42.5

43.0

44.0

47.0

2,740

4,270

7,820

21,400

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

3,770

3,260

3,160

3,170

3,050

1,800

3,020

3,710

4,510

5,700

5,020

3,760

2,840

1,200

3,490

3,440

3,200

3,260

3,140

2,180

1,390

2,790

3,O90

3,240

3,370

3,280

2,360

990

3,370

3,530

3,270

97,380

3,141

144

Nov.

2,770

2,480

1,780

1,880

3,550

3,520

3,160

3,120

3,110

2,860

878

1,860

3,460

3,310

3,250

3,100

1,85O

1,110

3,560

3,660

3,440

2,040

7,520

8,420

6,370

5,880

5,810

6,360

4,970

4,460

___ _ _

109,538

3,651

198

Dec.

5,160

2j_52Q

3,740

3,720

3,840

3,820

*3,650

2,85O

3,740

5,530

5,630

6,520

7,420

6,460

8,460

7,940

8,340

8,960

8,220

7,420

7,150

6,590

6,410

6,520

6,440

7,940

7,940

7,460

6,960

5,120

5,800

190,270

6,138

173

Jan.

b4,3OO

b5,800

b5,200

5,360

5,460

bS.OOO

5,190

5,020

5,46O

5,700

b5,200

5,020

5,190

b5,300

b5 , 000

4,790

4,820

b4,750

4.27O

4,530

4,950

5,160

6,930

b!2,70O

16,600

15,400

13,000

11,400

10,500

9,630

9,000

216,630

6,988

274

Feb.

8,500

7,740

b6,700

b6,700

7,230

7,310

7,080

6,850

6,120

5,430

6,120

6,300

6,120

5,640

5,430

4,370

4,240

*5,190

4,690

4,330

4,270

3,950

3,450

2,770

4,430

4,33O

6,660

10,900

-

______

163,050

5,823

246

Mar.

15.50O

12,400

10,300

9,80O

7,820

7,420

7,23O

6,480

6,660

9,040

9,92O

8,660

8,300

8,300

8,700

10,200

11,900

12,700

11,800

11,300

10,80O

10,300

9,420

9,420

9,710

9,840

9,120

8,83O

8,580

8,420

7,700

294,570

9,502

264

Apr.

7,540

7,74O

8,660

10,700

1O.900

11,400

12,8OO

15.700

13,200

12,2OO

12,000

12,000

10,800

10,200

1O.600

9,840

8,830

6,300

7,700

6,810

7,120

8,7OO

10,600

8,960

8,060

7,540

6,850

5,400

6,660

6,190

282,200

9,407

310

May

6,O80

5,670

5,290

4,140

3,42O

4,210

3,510

3,530

3,480

3,450

2,940

2,660

4,820

4,990

4,890

5,120

5,530

4,950

3,670

5,120

5,840

7,310

6,500

7,08O

4,920

3,730

5,120

5,090

4,850

3,890

4,92O

148,520

4,791

153

June

3,240

Z,77O

4.080

4,010

3,920

3,760

3,760

2,290

1,190

2,93O

2,780

2,83O

2,810

2,4OO

1,770

904

2,020

1,900

1,900

1,950

1,890

1,550

845

1,760

1,780

1,790

1,800

2,600

2,010

2,580

71,819

2,394

65.0

July

2,970

2,670

2,160

2,080

1,380

2,260

5,950

3,890

3,430

3,120

2,54O

2,740

1,980

859

2,240

2,050

1,860

1,850

1,580

895

592

1,580

*!-, 530

1,450

1,410

1,340

973

559

1,360

1,370

1,440

60,108

1,939

23.9

Aug.

1,450

1.88O

1,640

640

1,430

1,450

1,410

1,410

1,380

1,030

639

1,430

1,440

1,440

1,430

1,410

1,010

627

1,450

1,40O

1,370

1,310

1,170

711

559

1,14O

1,060

1,110

1,140

1,040

722

37,108

1,197

11.7

Sept.

559

506

909

848

896

921

520

506

929

95O

918

956

682

682

580

*866

922

1,210

1,250

1,200

788

580

970

881

1,310

1,460

1,520

1,030

324

1,020

26,853

895

10.9

Adjusted for wastage (figures represent net discharge from net drainage area)

Mean 

Cfsm 

In.

2,997 

0.677 

0.78

3,455

0.780 

O.87

Calendar year 1956: 

Water year 1956-57:

5,965 

1.35 

1.55

6,714 

1.52 

1.75

5,577 

1.26 

1.31

9,238 

2.09 

2.41

9,097 

2.O6 

2.29

4,638 

1.05 

1.21

Observed

Max 46,300 Mln 548 Mean 8,285 

Max 16,600 Min 324 Mean 4,652

2,329 

0.526 

0.59

1,915 

0.433 

0.50

1,185 

0.268 

0.31

884 

O.200 

0.22

Adjusted

Mean 7,952 Cfsm 1.80 In. 24.45 

Mean 4,497 Cfsm 1.02 In. 13.79

* Discharge measurement made on this day.

t Water wasted from 210 sq ml 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 inrshes may not represent 

natural flow because of regulation.
MERRIMACK RIVER BASIN 109 

Reservoirs in Merrimack River basin

Mewfound 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 vJinnipesaukee River (see p. 81).

Edward MacDowell Reservoir on Nubanusit Brook, at West Peterboro, 2 miles northwest of 

Feterboro, N. H., completed in 1950, used for flood control, has usable capacity of 

558,000,000 cu ft. Records furnished by Corps of Engineers.

Blacktfater Reservoir on Blackwater River, at Swett's Mills, 1 mile south of Webster, N. H., 

completed in 1941, used 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-^ miles southeast of Manchester, N. H. , used fo~ storage 

6T 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 1956 to September 1957

Date

Sept. 30, 1KB. 

Oct. 31. ......

Nov. 30. ......

Dec. 31. ......

Jan. 31, 1957.

Mar. 31. ......

May 31. ......

Sept. 30.... ...

Newfound 

Lake

1,146 

1,068

1,068

1,251

980

867 

1,274

1,361

1,072

883

Frankim 

Falls 

Reservoir

138 

126

145

128

152 

218

152 

168

128

153

129

135

131

Merrymeeting 

Lake

196 

178

170

196

146 

102

128 

163

168

152

125

84

48

Lake 

Wentworth

510 

465

452

521

558 

542

634 

719

716

651

553

426

t200

Edward 

MacDowell 

Reservoir

0.6 

.3

16.7

17.5

29.3 

32.4

3.7 

1.6

1.3

1.0

.3

.3

0

Blackwater 

Reservoir

0.6 

.4

.9

.7

1.1 

2.8

1.6 

.9

.7

.5

.1

.2

.2

Tower Hill 

Pond

173.5 

47.3

34.6

45.1 

62.3

103.5 

157.6

178.9

178.1

174.5

171.8

 156.8

Massabesic 

Lake

444 

380

374

588 

658

683

501

397

332

t Estimated; lake drawn during month for dam construction.
110 PARKER RIVER BASIN

Parker River at Byfield, Mass.

Location.--Lat 42°45'10", long 70°56'46", 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 

5? miles -southwest of Newburyport.

Drainage area. 21.6 sq mi.

Records available . October 1945 to September 1957.

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. 12 years, 34.6 cfs.

Extremes. Maximum discharge during year, 99 cfs Jan. 25 (gage height, 2.87 ft); minimum 

daily, 0.09 cfs Sept. 25-30.

1945-57: Maximum discharge, 352 cfs Mar. 23, 1948 (gage height, 4.81 ft); minimum 

daily, that of Sept. 25-30, 1957.

Remarks. Records excellent except those below 1 cfs and those for jerlods of no gageheight record, which are good. Diurnal fluctuation caused by mill above station. 

Some regulation at low flow by ponds above station.

Rating tables, water year 1956-57 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to Jan. 24 Jan. 25 to Sept. 30

1.3 

1.35

1.4

1.5 

1.7

1.17

1.7

2.4

4.1

10

1.9 

2.2 

2.5

3.0

19

39

61

109

1.1

1.15

1.2

1.25

1.3

1.4

0.09

.24

.50

.85

1.35

2.7

1.5

1.6 

1.8 

2.1 

2.5 

2.9

4.5 

7.2 

15 

' 33 

64 

102

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

1Z

13

14

15

16 

17

18

19

ZO

Zl

ZZ

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

1.45

1.55

TTJs

*1.65

1.95

1.7

3.8

3.3

3.3

3.0

2.8

2.7

2.5

2.4

2.4

2.4 

2.4

2.4

2.25

2.1

2.4

2.25

no

11

13

14

IS

1Z

11

10

10

156.95

5.06

0.234

O.Z7

Nov.

10

10

10

10

9.3

9.0

8.4

8.0

7.7

7.0

6.1

6.1

6.1

5.8

5.6

5.4 

57!

8.2

8.4

9.0

10

18

Zl

25

25

36

41

48

*47

43

469.5

15.6

0.7ZZ

0.81

Dec.

38

35

32

31

28

27

26

25

26

24

25

32

39

46

41

44 

46

§1

50

50

47

46

4Z

46

47

46

45

45

42

37

39

1,198

38.6

1.79

Z.06

Jan.

38

36

33

35

32

29

30

29

*28

26

26

26

26

26

25

25 

a24

a23

a23

a22_

22

27

54

85

9£

94

87

a78

a74

a6S

a62

1,311

42.3

1.96

2.26

Feb.

a58

a54

a52

a50

49

46

45

42

41

44

44

43

40

38

36

34 

33

32

31

31

29

28

28

29

*32

37

53

T~68

1,147

41.0

1.90

1.97

Mar.

66

GS

59

55

51

48

46

45

55

66

66

60

57

53

51

56 

58

59

56

54

*55

55

54

52

46

41

23

44

44

43

43

1,643

53.0

2.45

2.83

Apr.

42

43

43

41

43

58

76

75

75

75

76

78

77

73

66

59 

57

54

52

49

47

43

39

*39

37

36

35

34

32

21

1,585

52.8

2.44

2.73

May

28

26

24

23

22

20

20

19

18

18

21

24

26

27

30

30 

30

29

28

28

29

28

28

26

23

22

21

*20

19

17

16.

740

23.9

1.11

1.27

June

ii

13

12

11

11

10

9.7

8.6

7.6

6.6

6.0

5.4

5.0

4.7

4.5

3.9 

3.5

3.2

4.4

*5.0

4.5

4.3

3.7

3.0

S-a

2.8

*3.2

2.8

2.8

2.8

181.7

6.06

0.281

0.31

July

2^1

5735

2.1

1.95

1.95

1.8

1.7

1.25

1.35

1.12

1.22

1.22

1.22

1.22

1.35

1.35 

1.35

*1.35

1.35

1.35

1.55

1.55

1.55

.77

.62

.56

.56

.44

.33

.28

.33

39.79

1.28

0.059

0.07

Aug.

0.38

.38

.33

.50

.56

.50

.50

.50

.50

.50

.56

.50

.50

.44

.44

.50 

.50

.44

.33

.20

.24

.28

.28

.24

.24

.28

.24

.17

^4m.14

11.45

0.369

0.017

0.02

Sept.

0.11

.11

.11

.11

.11

.11

.11

.11

.11

.11

.14

.17

.17

.14

.14

.14 

.17

.17

.17

.14

.11

.14

.14

.14

.09

.09

.09

.09

.09

.09

3.72

0.124

0.006

0.01

Calendar year 1956: Max 231 Min 0.30 Mean 42.2 Cfsm 1.95 In. Z6.57

Water year 1956-57: Max 98 Min 0.09 Mean 23.3 Cfsm 1.08 In. 14.61

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records, appearance of recorder 

chart, and records for Ipswich River at South Mlddleton.
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 Middleton, 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 1957.

Gage. Water-stage recorder and concrete control. Altitude of gage is 45 ft (from topographic map).

Average discharge. 19 years, 68.4 cfs (adjusted for diversions).

Extremes. Maximum discharge during year, 232 cfs Apr. 10 (gage height, 3.615 ft); minimum, 

DTTTfs Sept. 24.

1938-57: Maximum discharge, 646 cfs Mar. 21, 1948 (gage height, 5.895 ft); minimum, 

that of Sept. 24, 1957.

Remarks. Records good. Water diverted above station for municipal supplies of Reading, 

Lynn, and Peabody. Occasional regulation by mill above station.

Revisions (water years). WSP 1301: 1942(M).

Rating tables, water year 1956-57 (gage height, in feet, and discharge,

in cubic feet per second) 

(Shifting-control method used Dec. 16-18)

Oct. 1 to Dec. 16 Dec. 19 to Sept. 30

0.1 

.2 

.3 

.4

0.5 

1.8 

4.2 

8.O

0.5

.7

1.0

1.5

0.08 

.1 

.2 

.3 

.4 

.5

0.1 

.2 

1.4 

3.8 

7.4 12

O.7 

1.0 

1.5 

2.0 

3.0 

4.0

172

270

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

1.95

2.25

2.6

2.7

2.3

3^

5.3

4.0

2.05

3.8

8.2

9.8

11

12

12

12

11

10

9.8

9.2

8.8

9.3

10

7.5

4.5

3.1

2.35

1.75 13'8 2

204.55

6.60

7.45

Nov.

*12

3.1

13

11

8.5

7.5

6.4

5.5

2.05

4.0

6.2

8.9

1.85

5.1

10

9.9

1.5

6.5 t'.G

3.8

3.8

17

21

18

13

29

413~T

36

35

382.20

12.7

14.3

Dec.

31

28

*23

19

16

14

If

15

17

18

18

35

44

48

61

64

7O

25

71

71

66

62

60

58

61

58

58

56

57

54

58

1,400

45.2

12.7

Jan.

60

57

*53

51

48

46

46

42

40

39

39

38

38

38

38

37

36

35

35

33

33

42

129

149

165

147

144

153

150

135

122

2,218

71.5

1.85

Feb.

110

100

92

87

66

*81

75

69

67

77

75

58

51

48

46

44

42

41

41

41

40

39

40

41

44

51

95

125

_

1,8O6

64.5

14.6

Mar.

114

108

112

*103

69

77

64

62

96

108

103

~ST 115

91

84

95

102

95

86

84

89

97

96

90

84

77

72

66

61

59

S3

2,734

88.2

22.5

Apr.

55

56

*62

59

65

131

160

145

166

196

184

182

167

153

138

126

116

103

97

90

83

75

68

63

58

56

52

51

49

12.

3,053

102

1O.8

May

45

42

*41

39

37

33

33

33

32

31

41

48

52

55

57

60

53

40

37

35

37

36

33

30

26

22

20

17

14

27

*26

1,132

36.5

10.2

June

23

21

19

17

16

14

15

13

12

11

9.8

8.8

8.2

7.4

6.8

6.0

5.4

4.7

5.0

6.0

5.0

4.4

3.9

3.4

3.2

3.0

3.0

2.8

2.8

2.6

263.2

8.77

2.29

July

*2.4

2.1

1.8

1.5

1.4

1.4

1.1

.95

.8

.8

.7

.6

.6

.6

.6

.65

.65

.6

.6

.6

.55

.5

.4

.4

.55

.35

1.25

.85

1.5

2.6

Z . u

31.20

1.01

2.38

Aug.

*1.6

.95

.7

.8

2.2

2.0

1.25

.95

.65

.6

.6

.65

.6

.55

.5

.45

.45

.4

.35

.3

.3

.35

.35

.25

7^5

.3

.25

.3

.3

.3

.25

19.75

0.637

2.05

Sept.

0.25

.45

.35

.4

.4

.3

.25

.3

.35

.3

.35

.35

.3

.4

.3

.25

.25

.2

.2

.2

.15 .15'

.15

.1

TT5

.2

.15

.25

.25

.2

7.90

O.263

1.95

Adjusted for diversions

Mean 

Cfsra 

In.

14.0 

0.323 

0.37

27.0 

0.622 

0.70

Calendar year 1956 : 

Water year 1956-57 :

57.9 

1.33 

1.54

73.4 

1.69 

1.95

79.1 

1.62 

1.90

111 

2.56 

2.94

113 

2.6O 

2.89

46.7 

1.08 

1.24

Observed

»ax 490 Min 0.85 Mean 80.9 

Max 196 Min 0.1 Mean 36.3

11.1 

O.256 

O.28

3.38 

O.O78 

0.09

2.68 

0.062 

0.07

2.22 

0.051 

0.06

Adjusted

Mean 86.5 Cfsm 1.99 In 27.13 

Mean 44.9 Cfsm 1.03 In, 14. 03

* Discharge measurement made on this day.

t Diversions for municipal supplies of Reading, Lynn, and Peabody, equivalent in cubic feet per 

second; records furnished by municipalities.
112 IPSWICH RIVER BASIN

Ipswich River near Ipswich, Mass.

Location. Lat 42"39'35", long 70°53'39", on left bank 200 ft downstream from Willowdale 

Dam, l|- miles downstream from Hewlett Brook, and 4 miles upstream from Ipswich, Essex 

County.

Drainage area.--124 sq mi.

Records available. June 1930 to September 1957. Prior to October 1930, published as 

''at Willowdale."

Gage. Water-stage recorder and concrete control. Datum of gage is 20.63 ft above mean 

sea level, datum of 1929.

Average discharge. 27 years, 198 cfs (adjusted for diversions).

Extremes.--Maximum discharge during year, 496 ofs Jan. 26, 27, Apr. 9, 10 (gage height, 

4.51 ft); minimum, 1.2 cfs Sept. 28-30.

1930-57: Maximum discharge, 2,610 cfs Mar. 15, 1936 (gage height, 7.70 ft); minimum, that of Sept. 28-30, 1957.

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, Danvers, Salem, and Beverly.

Revisions.--WSP 781: Drainage area.

Rating table, water.year 1956-57, except periods of ice effect (gage 

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

2.2

2.3

2.4

2.5

2.6

2.7

1.0

2.3

4.0

6.4

9.6

14

3.0 

3.3 

3.6 

4.0 

4,5

68

122

240

490

Discharge, in cubic feet per second, water year October 1956 to Se-)tember 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

IS

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

14

12

11

 11

13

15

27

36

35

31

26

23

21

22

23

23

23

23

23

22

21

21

*55

a 90

alOO

a 110

a!20

a 120

a 105

a 90

a 80

1,346

43.4

10.0

Nov.

a70

60

55

47

47

43

38

37

36

34

30

29

32

32

30

31

32

49

63

70

70

85

96

99

101

118

129

144

*166

171

2,044

68.1

16.8

Dec.

168

157

146

136

127

116

109

105

107

107

107

127

144

163

186

216

240

260

b260

260

256

248

b215

226

236

b225

b230

233

230

blbO

196

5,686

183

15.0

Jan.

205

b205

b!95

190

180

168

163

157

*152

149

144

144

144

b!40

b!40

b!35

b!30

b!30

b!25

bl25

b!20

134

208

269

402

466

490

442

386

355

330

6,723

£17

4.28

Feb.

307

284

268

260

244

222

205

196

190

196

208

205

193

183

168

157

144

136

136

134

124

124

134

144

*152

171

230

284

5,399

193

40.1

Mar.

294

355

355

325

b295

276

260

248

294

320

330

335

320

307

294

298

307

307

307

302

307

30Z

298

298

289

280

260

248

236

233

250

9,110

294

24.7

Apr.

226

230

*233

236

244

307

380

430

484

490

490

478

454

430

402

365

340

320

302

284

268

256

240

226

219

212

208

202

196

186

9,338

311

13.1

May

T5B~ 174

*160

152

146

136

132

124

116

109

116

127

136

146

160

168

171

171

166

163

160

152

141

134

127

122

114

1O5

96

85

*77

4,252

137

13.0

June

76

7T

70

64

60

55

54

49

48

42

38

34

32

31

29

26

24

22

21

*23

23

22

19

17

16

16

15

15

13

12

1,040

34.7

6.21

July

~5.2 10

8.9

8.2

9.2

8.6

7.9

7.3

6.4

6.4

6.4

6.1

5.4

4.9

4.4

4.6

7.6

5.4

4.4

4.0

3.9

3.1

3.1

3.1

3.3

3.3

3.3

3.7

4.0

6.4

5.8

178.3

5.75

6.63

Aug.

*5.1

4.7

4.0

5.6

10

~9.2 12

7.6

6.4

5.8

5.6

5.6

5.1

4.9

4.4

3.7

3.5

3.1

3.1

3.0

2.8

2.8

2.8

2.8

2.6

2.6

2.8

3.3

3.7

3.9

3.3

145.8

4.70

5.30

Sept.

3.1 2T8~

2.6

2.6

2.5

2.2

2lo

2.2

 2.1

2.2

2.2

2.0

2.0

2.0

3.0

2.3

2.2

2.0

2.O

1.9

1.9

1.7

1.6

1.6

1.6

1.5

1.4

1.4

1*2.

1.2

61.0

2.03

5.03

Adjusted for diversions

Mean

Cfsm 

In.

53.4 

0.431 

0.50

85.0 

0.685 

0.76

Calendar year 1956 : Water year 1956-57 :

198 

1.60 

1.84

221 

1.78 

2.06

233 

1.88 

1.96

319 

2.57 

2.96

324 

2.61 

2.92

150 

1.21 

1.40

Observed

Max 1,520 Mln 5.7 Mean 245 

Max 490 Mln 1.2 Mean 124

40.9 

0.330 

0.37

12.4, 

0.100 

0.12

10.0 

O.081 

0.09

A1 Justed

7.06 

0.057 

0.06

Mean 254 Cfsm 2.05 In. 27.83 

Mean 137 Cfsm 1.10 In. 15.04

* Discharge measurement made on this day.

t Diversions for municipal supplies of Reading, Lynn, Peabody, Danvers, Salem, and Beverly, 

equivalent in cubic feet per second. Records furnished by various municipalities.

a No gage-height recordj discharge estimated on basis of weather records and records for Parker 

River at Byfield.

b Stage-discharge relation affected by Ice.
MYSTIC RIVER BASIN 113

Aberjona River at Winchester, Mass.

Location. Lat 42°26'50", long 71°08'22", on left bank at Winchester, Middlesex County, 

CT5 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 1957.

Gage. Water-stage recorder and concrete control. Datum of gage is at mean sea level, 

datum of 1929.

Average dlscharge.--18 years, 27.0 cfs.

Extremes. Maximum discharge during year, 172 cfs Jan. 24 (gage height, 11.95 ft); maximum 

gage height, 12.08 ft Jan, 23 (backwater from ice); minimum discharge, 0.3 cfs Sept. 9; 

minimum daily, 0.35 cfs Sept. 5. 9, 10.

1939-57: 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 periods of ice effect or no gage-height record, 

which are fair. Flow affected by diversions for industrial use and for municipal supply 

of Wobum and Winchester, and by wastage and leakage from Winchester Reservoirs. Occasional regulation caused by mills above station.

Rating tables, water year 1956-57, except periods of Ice effect (gage height, 

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

Oct. 24 to Sept. 30

10.25

10.3

10.4

10.5

0.65

1.05

2.2

3.9

10.6

10.7

10.9

6.2 

9.1

10.2

10.3

10.4

10.5

10.6

0.3

.95 

2.1 

3.7 

6.0

10.7

11.0

11.3

11.7

12.0

9.3

26

56

118

183

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

0.9

.95

1.15

2.0

2.1

2.2

15

3.8

2.1

*1.4

1.05

2.1

2.2

1.15

.95

.8

.9

1.O5

.85

.8

.95

.85

15

*5.0

2.2

3.1

2.5

2.0

2.4

2.1

1.9

81.45

2.63

_

-

Nov.

.1

.O

.9

.7

.6

.5

.3

.2

.2

.1

.0

.0

.85

.75

.6

^55

.55

16

10

7.0

6.0

20

17

13

11

30

20

16

*14 

13

213.90

7.13

_

-

Dec.

11

7.8

7.6

7.6

6.6

5.9

5.0

5.2

11

10

10

25

26

24

22

28

302-9

23

19

17

17

18

20

25

25

23

22

25 

23

b22

550.7

17.8

_

-

Jan.

D21

b20

18

18

17

16

b!7

b!6

b!5

b!6

blS

16

15

b!4

b!4

13

13

13

12

10

b!2

b26

b!20

151

TIT

79

67

57

50

b45

b41

1,069

34.5

_

-

Feb.

b38

36

36

44

45

42

36

*35

35

46

11

38

32

27

26

24

25

27

28

26

24

23

2223"

22

25

47

45

-

924

33.0

_

-

Mar.

b39

35

34

35

31

27

24

32

60

65

53

44

38

35

32

44

45

42

35

35

*43

48

48

43

36

32

30

28

26 

32

32

1,183

38.2

~

-

Apr.

30

36

38

35

51

87

87

74

82

84

78

70

62

53

47

46

43

42

35

32

30

26

24

23

21

21

20

18

22

11

1,334

44.5

_

-

May

17

15

15

10

12

13

10

9.5

8.6

7.9

19

21

21

18

21

30

29

22

16

20

29

21

8.9

12

9.3

10

8.3

17

6.3

4.4

3^0

464.2

15.0

_

-

June

5.6

5.1

14

4.6

3.8

3.6

3.8

4.7

3.2

1.9

1.6

1.35

.95

.9

.9

.85

*.85

.85

7.0

5.8

1.8

6.5

1.8

1.25

1.0

1.15

2.5

1.45

.9

« 8

90.50

3.02

-

July

0.75

.75

.75

.7

.9

.7

.7

.8

.9

.85

.85

.8

.85

.9

1.15

1.1

.9

.9

.9

.85

.9

.85

.85

.8

.8

.75

2.2

1.15

.65

775

4.6

31.30

1.01

-

Aug.

2.5

.7

.6

.75

.65

.6

.6

.6

.6

.6

.6

.65

*.55

.5

.5

.5

i*5

.55

.5

.65

.5

.45

.5

.45

.65

.75

.45

.45

.45

.45

.45

19.20

0.619

-

Sept.

0.4

.45

.45

.45

.55

.4

.4

.4

.35

.35

.4

*.4

.85

.45

.4

.4

.5

.85

.85

.85

.85

.65

.4

.4

.45

.4

.45

.45

.4

.4

14.80

0.493

-

Calendar year 1956: Max 294 Min 0.55 Mean 34.4 Cfsm - In. -

Water year 1956-57: Max 151 Mln 0.35 Mean 16.4 Cfsm - In. -

Peak discharge (base, 170 cfs).--Jan. 24 (2:3O to 4 p.m.) 172 cfs (11.95 ft).

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. No gage-height record Oct. 3O to Nov. 13, Nov. 2O-29; discharge estimated on "basis of 1 dis 

charge measurement, weather records, recorded range in stage when available, 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 1957.

Gage. Water-stage recorder and concrete control. Datum of gage is 89.76 ft above mean 

sea level, datum of 1929.

Average discharge. 20 years, 298 cfs (adjusted for diversions).

Extremes. Maximum discharge during year, 924 cfs Apr. 11 (gage height, 3.68 ft); minimum, 

4.6 cfs Sept. 30.

1937-57: 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 1956-57, except periods of ice effect (gage 

height,- In feet, and discharge, In cubic feet per secord)

Oct. 1 to Apr. 11 Apr. 12 to Sept 30

0.8 

1.0 

1.5

126

282

2.0 

3.0 

4.0

420

720

1,020

0.3 

.4 

.5

4.9

9.7

17

0.6 

.7

table above 0.8 

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

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.

166

TSe

110

94

88

82

133

153

166

166

146

126

110

94

82

80

77

74

65

65

65

65

120

146

160

160

150

129

113

104

*98

3,523

114

+5.24

Nov.

107

104

107

110

107

100

94

91

88

85

85

85

88

91

85

85

85

150

213

252

255

282

270

258

234

282

326

343

348

*334

5,144

171

+5.12

Dec.

297

249

204

189

179

176

173

173

198

228

249

332

376

412

450

504

543

567

570

555

531

501

492

477

492

489

489

*477

b460

b415

b405

11,852

382

+5.38

Jan.

b400

b375

b355

332

300

273

255

252

249

b245

b240

243

243

b235

b230

b220

b210

b205

b200

bl95

198

235

568

678

756

834

852

810

747

669

*597

12,201

394

+5.35

Feb.

540

492

b445

432

4Z3

409

400

389

382

409

438

b425

423

398

369

343

320

297

279

276

273

270

267

273

282

31£

*41£

441

-

10,419

372

+5.13

Mar.

477

492

492

474

444

412

382

374

462

498

525

561

567

543

513

507

477

450

429

432

432

450

468

480

480

471

450

420

398

387

376

14,323

462

+5.46

Apr.

*369

387

403

417

477

618

675

750

870

909

'§12 921

870

816

756

696

636

582

540

495

450

406

379

348

323

306

288

282

270

 

16,409

547

+5.62

May

243

222

207

198

192

189

176

163

146

145

192

210

225

225

231

249

23T

192

182

189

198

207

210

213

179

157

153

146

*153

160

153

5,940

192

+5.90

June

136

T5T

12.5

120

113

100

97

83

83

8>

77

77

63

61

5*

51

54

46

52

51

44

35

37

35

3^

34

34

*34

31

3£

2,015

67.2

+5.38

July

32" 35

29

25

27

25

21

24

25

25

22

21

20

18

18

19

21

21

16

14

13

14

16

16

16

14

12

9.7

9.7

12

13

603.4

19.5

+4.34

Aug.

14

13

12

10

12

12

12

11

10

9.1

7.5

7.5

8.0

8.6

8.6

8.0

7.0

6.2

5.7

6.6

6.2

6.6

6.2

6.2

7.0

8.6

11

*12

10

9.1

7.5

279.2

9.01

+4.69

Sept.

6.6

6.6

7.0

S.6

8.0

8.0

8.0

7.5

7.0

7.5

8.6

9.1

9.7

"8.6 10

8.0

9.1

9.7

9.7

9.1

8.0

7.0

6.6

7.5

7.5

7.0

6.6

6.2

5.3

 ! 

233.3

7.78

+4.63

Adjusted for diversions

Mean

Cfsm

In.

119

0.647

0.74

177

0.962

, 1.07

388

2.11

2.43

399

2.17

2.50

377

2.05

2.13

467

2.54

2.93

553

3.01

3.35

198

1.08

1.24

Observed

Calendar year 1956:

Water year 1956-57 :

Max 1,470 Mln 24 Mean 374

Max 921 Mln 5.2 Mean 227

72.6

0.395

0.44

23.8

0.129

0.15

13.7

0.074

0.09

Adjusted

12.4

0.067

O.08

Mean 378 Cfsm 2.05 In. 27.98

Mean 232 Cfsm 1.26 In. 17.15

* Discharge measurement made on this day.

t Diversions for municipal supply of Wellesley and Needham, equivalent In cubic feet per second; 

records furnished by municipalities and Water Division of Metropolitan Dist"ict Commission, 

b Stage-discharge relation affected by Ice.
CHARLES RIVER BASIN

Mother Brook at Dedham, Mass.

Location. Lat 42°15'19", long 71°09'58", on right bank at upstream side of East Street 

ErTcIge, at Dedham, Norfolk County, 0.4 mile downstream from point of diversion from 

Charles River.

Records available. October 1931 to September 1957.

Gage. Float gage read twice daily. Datum of gage is 0.03 ft below sea level, datum of 

1929. Prior to Dec. 9, 1931, water-stage recorder at same site and datum.

Average discharge. 26 years, 85.9 cfs.

Extremes. Maximum discharge during year, 285 cfs Apr. 13 (gage height, 88.62 ft, from 

grapE based on gage readings); no flow July 7 to Aug. 8.

1931-57: 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 

fRrough Dedham and Hyde Park.

Revisions (water years). WSP 1301: 1932(M).

Rating tables, water year 1956-57 (gage height, In feet, and discharge,

In cubic feet per second)

(Backwater from debris and/or shifting-control method used 

Aug. 9 to Sept. 30)

Oct. 1 to Apr. 10

65.4

85.6

86.0

86.5

4.0 

9.1

87.0

88.0

88.5

94

198

266

84.95

85.0

85.1

85.2

85.3

85.5

Apr. 11 to Sept. 3O 

0

.1

.5

1.2

2.6

7.0

86.0

86.5

87.0

88.0

88.7

27

56

94

198

298

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

3O

31

Total

Mean

Cfsm

In.

Oct.

*26

25

23

17

15

11

20

26 

28

30

28

24

2O

16

12

9.8

8.3

7.5

6.4

5.2

4.7

5.O

15

28

28

29

31

29

24 

20

IS

589.9

19. 0

-

-

Nov.

17

16

15

15

15

14

12

11 

11

10

8.O

ll"

10

9.4

8.8

8.8

22

34

44

50

62

68

68

65

70

76

82

86

88_

1,O16.0

33.9

-

-

Dec.

84

78

72

*61

53

47

43

40 

45

51

56

71

85

100

12O

138

143

146

148

14T

145

144

144

143

143

143

142

142

142 

144

144

3,304

107

-

-

Jan.

130

124

114

106

97

91

84

76 

75

72

75

74

73

70

65

62

58

56

54

49

49

59

 111

161

175

181

185

187

T52 

160

147

3,202

103

-

-

Feb.

144

14T

140

139

138

134

127

120 

115

117

121

125

125

 119

114

107

loo

92

87

83

78

74

72

73

73

77

93

103

3,031

108

-

-

Mar.

Ill

120

126

128

126

120

112

m131

140

145

150

150

150

145

145

145

»135

135

131

131

132

136

135

131

129

125

12O 

116

113

4,041

130

-

-

Apr.

106

106

113

113

120

140

180

200 

220

259

276

 280

284

276

259

24O

22O

198

185

170

155

 140

126

114

104

97

91

85

80 

78

5,015

167

-

-

May

71

66

60

53

48

45

42

38 

34

30

38

45

51

53

56

61

60

58

50

48

48

47

48

53

49

43

39

36

34 

35

32

1,471

47.5

-

-

June

31

29

*28

25

23

21

20

19 

18

*16

14

12

10

8.8

6.5

5.8

*5.6

4.8

4.6

6.3

5.1

3.4

2.5

1.8

1.2

.9

.8

.9

.6

J 

326.1

10.9

-

-

July

0,6

.5

.4

.2

.1

.1

O

0 

0

0

0

O

0

0

O

O

0

O

O

O

0

O

O

O

O

0

0

0

0 

0

0

1.9

0.061

-

"

Aug.

0

0

0

0

O

O

O

0 

.7

Iti

1.2

1.2

1.1

.8

.7

».8

is

.5

.4

.4

.3

.3

.3

.2

.3

.7

1.0

1.0

.8 

.9

.9

16,7

0.539

-

-

Sept.

0.7

.6

.5

.3

.5

.5

.3

.4 

.3

^2.

.2

.2

.3

.4

.4

.3

.3

.3

.3

.2

.2

.2

.2

*.6

-t&

.7

.8

.7

.6 

.5

12.5

0.417

-

-

Calendar year 1956: Max 444 Mln O Mean 99.2 Cfsm - In. -

Water year 1956-57: Max 284 Mln O Mean 60.3 Cfsm - In. -

* Discharge measurement made on this day.
116 CHARLES RIVER BASIN

Charles River at Waltham, Mass.

Location. Lat 42°22'20", long 71"14"03", on right bank 800 ft downstream from Moody

Street Bridge in Waltham, Middlesex County, and a third of a mile upstream from Beaver 

Brook.

Drainage area. 227 sq mi, excludes 23.6 sq mi drained by Stony Brook from which flow is 

diverted for 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 1957.

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 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 Boston Manufacturing Co. and 

Waltham Bleachery, respectively.

Ave rage d i a charge.--2 6 years (1931-57), 373 cfs (adjusted for diversions, wastage, and 

leakage).

Extremes.--Maximum discharge during year, 957 cfs Apr. 11 (gage height, 3.01 ft); minimum, 

1.1 cfs Aug. 21, 22; minimum daily, 1.4 cfs Aug. 22.

1931-57: 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, 1943; minimum daily, 0.2 cfs Oct. 4, 1943.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Flow 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 Sudbury River basin or wastage from Stony Brook Reservoir. Low flow completely regulated 

by Boston Edison Co. powerplant above station.

Revisions (water years). WSP 781: 1933(M). WSP 851: Drainage area. WSP971: 1942.

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1

z

3

4

5

6

7

6

9

10

11

12

13

14

15

16

17

16 

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

118

128

128

123

111

10O

168

*146

140

143

143

138

125

113

104

98

93

87

81

77

73

71

160

*144

146

154

151

146

143

123

3,803

123

+26.0

Nov.

133

121

118

116

121

lie

116

116

113

100

102

107

102

102

100

98

93

158

166

179

200

242

232

229

222

266

248

252

255

4,785

160

+41.9

Dec.

255

245

238

219

200

194

185

174

191

197

*203

242

258

280

324

351

375

396 

418

430

435

430

446

440

435

435

561

384

380

366

10,072

325

+115

Jan.

337

315

311

303

290

276

276

262

258

255

238

242

236

225

220

210

205

200 

195

190

185

210

330

*500

550

600

620

640

630

61O

580

10,501

339

+112

Feb.

540

510

474

462

44O

413

391

375

370

380

370

360

375

366

351

337

324

303 

290

276

*266

262

258

252

258

269

311

319

9,902

354

+117

Mar.

342

361

370

375

375

370

356

351

391

380

391

413

418

435

440

457

430

522 

435

408

402

402

391

386

391

396

391

380

370

366

351

12,246

395

+139

Apr.

*342

361

351

351

408

490

501

540

616

660

770

746

716

699

677

650

611

578 

528

496

446

418

396

366

335

320

305

300

285

270

14,532

484

+177

May

255

*235

173

200

203

197

185

179

168

95

140

182

210

213

229

235

232

232 

222

210

213

200

197

232

206

200

336

197

168

155

145

6,244

201

+ 59.3

June

135

85

*130

125

118

111

1O9

96

83

77

73

67

96

69

55

48

43

*40 

43

43

42

40

37

36

32

32

31

32

36

32

1,996

66.5

+26.0

July

31

29

29

27

30

27

25

24

24

25

24

23

22

21

21

19

19

57 

107

96

89

79

62

49

20

10

10

10

14

*15

15

1,053

54.0

+18.2

Aug.

14

14

13

14

17

14

11

15

22

23

23

30

46

62

55

52

30

12 

19

14

3.4

1.4

2TT

3.0

4.5

6.3

5.1

4.5

4.5

3 9

3.4

542.1

17.5

+14.9

Sept.

2.1

2.6

3.0

3.4

3.4

3.0

3.4

5.7

14

21

27

*28

30

29

27

33

31

37 

26

23

23

24

22

24

24

24

23

23

24

23

586.6

19.6

-.77

Adjusted for diversions, wastage, and leakage

Mean 

Cfam 

In.

151 

0.665 

0.77

201 

0.885 

0.99

Calendar year 1956: 

Water year 1956-57:

440 

1.94 

2.24

451 

1.99 

2.29

471 

2.07 

2.16

534 

2.35 

2.71

661 

2.91 

3.25

261 

1.15 

1.32

Observed

Hax 1,600 Mln 26 Bean 392 

Max 770 Min 1.4 Mean 209

92.5 

0.407 

0.45

52.2 

0.230 

0.27

32.4 

0.143 o.ie

18.8 

0.083 

0.09

Adjusted

Mean 471 Cfsm 2.07 In. 28.26 

Mean 279 Cfsn 1.23 In. 16.70

* Discharge measurement made on this day.

t Diversion to Mother Brook, diversions for municipal supply of Wellesley, Needham, and Dedham, 

diversion from Lake Cochituate, and wastage and leakage from Norumbega Resenolr, equivalent In 

cubic feet per second. Records furnished by Water Division of Metropolitan Ilstrlct Commission and 

by municipalities.

Note.--No gage-height record Jan. 15 to Feb. 2, Apr. 25 to May 2, May 30 tc June 2; discharge 

estimated on basis of 2 discharge measurements, weather records, recorded rarge in stage, and records for station at Charles River Village.
NEPONSET RIVER BASIN 117

Neponset River at Norwood, Mass.

Location. Lat 42°10'39", long 71°12'OS", on left bank 200 ft upstream from Pleasant 

STreet Bridge, 200 ft downstream from New York, New Haven & 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 1957. 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. 18 years, 49.9 cfs.

Extremes. Maximum discharge during year, 247 cfs Jan. 23 (gage height, 9.65 ft); minimum 

daily, 1.8 cfs Sept. 1.

1939-57; Maximum discharge, 1,490 cfs Aug. 19, 1955 (gage height, 14.65 ft, from 

floodmarks); minimum daily, that of Sept. 1, 1957.

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 1956-57 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Mar. 10 Mar. 11 to Sept. 3O

7.1 7.6

7.4 24

7.7 43

8.0

9.0

10.0

172

289

6.76

6.8

6.9

7.1

1.8

2.4

4.2

10

7.5 33

8.0 74

9.0 172

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

*24

22

20

18

22

17

17

37

33

29

26

21

14

14

20

14

13

16

13

11

11

15

40

68

40

30

24

21

19

18

17

704

22.7

-

-

Nov.

16

17

19

21

30

34

32

32

34

35

18

*10

15

16

17

16

25

40

64

48

35

56

59

51

36

40

47

41

36

*32

972

32.4

-

-

Dec.

30

29

28

28

23

22

22

21

45

67

62

70

70

66

107

122

134

116

100

88

82

79

94

97

106

103

88

85

87

90

83

2,244

72.4

-

-

Jan.

74

66

57

53

49

50

53

46

50

45

54

45

46

45

44

43

*41

40

39

38

40

52

*174

218

158

124

109

99

96

89

81

2,218

71.5

-

-

Feb.

78

75

72

81

84

79

75

67

66

91

94

80

72

68

64

59

55

52

50

47

*46

45

46

46

41

53

94

107

-

1,887

67.4

-

-

Mar.

100

89

69

68

61

65

54

63

108

125

113

101

94

88

81

87

89

85

78

81

*83

91

100

88

77

70

63

59

56

58

68

2,512

81.0

-

-

Apr.

66

76

89

79

105

170

145

135

165

150

125

115

110

105

82

78

77

73

68

74

67

64

61

*58

56

52

52

47

IT

48

2,639

88.0

-

-

May

34

28

36

38

35

30

28

21

16

T9

36

37

51

44

34

42

34

18

26

37

38

33

36

27

19

21

20

33

37

20

16

944

30.5

-

-

June

19

16

*25

16

15

12

13

12

8.5

16

12

12

11

11

12

7.8

1~7.0

12

13

14

12

9.0

13

18

18

19

18

19

16

418.3

13.9

-

-

July

18

16

15

8.6

9.7

10

8.9

13

15

16

14

14

15

10

*11

14

12

13

14

14

9.8

11

16

17

15

13

13

9.2

11

16

15

407.2

13.1

-

-

Aug .

16

16

16

14

9.7

8.9

8.5

8.4

8.5

8.7

7.5

7.8

7.5

8.1

8.1

8.1

9.3

8.5

12

15

17

18

19

18

9.0

10

14

15

12

8.9

5.B

353.1

11.4

-

-

Sept.

1.8

2.0

6.1

9.7

11

12

8.9

8.2

8.4

*9.3

8.9

8.9

9.7

7.8

5.1

6.9

8.5

8.5

9.3

9.3

8.2

5.1

7.8

*9.3

8.9

9.3

9.7

7.9

4.4

7.2

238.1

7.94

-

-

Calendar year 1956 : Max 346 Mln 6.4 Mean 67.8 Cfsra - In. -

Water year 1956-57 : Max 218 Mln 1.8 Mean 42.6 Cfsra - In. -

* Discharge measurement made on this day.

Note. No gage-height record Oct. 1-8, 18-30, Nov. 2-12, Nov. 14 to Dec. 4, Dec. 6-14, Jan. 14-21, 

Feb. 9-20, Mar. 23 to Apr. 2, Apr. 5-23, May 4-6, June 18-20, Aug. 24-29; discharge estimated on 

basis of 4 discharge measurements, weather records, recorded range In stage when available, appearance of stage graph for adjacent days, engineer's notes, and records Tor East Branch Neponset River 

at Canton and Wading River near Norton.
118 NEPONSET RIVER BASIN

East Branch Neponset River at Canton, Mass.

Location.--Lat 42°09'16", 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 ml.

Records available. October 1952 to September 1957.

Gage. Water-stage recorder. Altitude of gage Is 85 ft (from topographic map).

Average discharge. 5 years, 60.7 cfs.

Extremes. Maximum discharge during year, 292 cfs Jan. 23 (gage helglt, 3.40 ft); minimum 

dally, 0.6 cfs July 7, Sept, 1.

1952-57: Maximum discharge, 1,790 cfs Aug. 19, 1955 (gage height, 8.18 ft), from 

rating curve extended above 690 cfs by logarithmic plotting; mininum daily, that of 

July 7, Sept. 1, 1957.

Remarks. Records good. Plow regulated by ponds above station.

Rating table, water year 1956-57 (gage height, In feet, and discharge, 

In cubic feet per second)

0.4 

.5 

.6 

.7

0.4 

.7 

1.3 

£.4 

4.6 

7.4

1.0 

1.2 

1.5 

2.0 

3.0

41

90

226

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

30

21

ZZ

33

24

35

26

37

28

29

30

31

ttotal

Mean

Cfsra

In.

Oct.

11 

10

9.1

8.S

11

10

58

64

37

34

30

18

18

18

17

17

20

17

17

16

15

11

43

77

38

31

26

24

22

20

20

747.9

34.1

0.903

1.04

Nov.

*23 

24

33

36

42

43

39

41

45

45

38

34

33

32

33

31

29

61

71

52

44

68

69

54

46

83

52

56

53

47

1,336

44.5

1.67

1.86

Dec.

44 

40

*39

39

38

34

33

31

57

69

60

78

73

70

115

140

134

107

93

89

88

86

107

115

121

114

98

93

98

104

97

3,501

8O.7

3.02

3.48

Jan.

85 

78

73

71

70

66

65

65

63

63

62

59

57

54

53

47

*46

44

42

ii

42

57

190

T70

116

98

90

87

84

83

78

2,399

74.2

2.78

3.30

Feb.

75 

73

71

68

79

74

69

66

66

9§

96

76

66

62

60

57

57

55

56

54

*53

50

48

11

47

48

80

88

1,837

65.6

2.46

2.56

Mar.

74

65

65

60

55

54

53

55

106

104

81

73

69

65

62

67

71

64

60

64

76

92

90

80

63

57

54

50

48

52

59

3,088

67.4

3.53

3.91

Apr.

*56 

63

90

74

86

190

158

131

184

166

139

126

121

112

83

78

76

72

63

71

68

65

57

*54

52

53

54

51

43

38

2,672

89.1

3.34

3.72

May

36 

33

29

36

26

37

26

30

18

17

33

36

34

20

20

19

16

16

16

17

24

25

21

19

16

15

16

34

26

19

17

687

22.3

0.831

0.96

June

If

*15

14

13

13

13

11

10

10

10

10

9.8

*9.1

9.1

8.8

7.7

6.8

6.5

6.8

7.1

6.5

6.5

6.2

6^

7.4

8.8

7.1

6.2

6.5

279.4

9.31

0.349

0.39

Calendar year 1956 : Max 3O1 Mln 1.3 Mean 61.7 Cfsra 3.31

Water year 1956-57 : Max 19O Mln 0.6 Mean 4O.7 Cfsra 1.53

July

6.5 

6.5

6.2

6.2

6.3

3.1

^.

5.6

7.6

6.8

5.9

6.2

3.9

2.4

*5.6

7.4

7.1

6.2

5.9

3.7

1.0

4.7

5.1

5.1

4.8

4.1

1.5

1.3

3.8

4.3

4.7

148.9

4. SO

0.180

0.31

Aug.

4.6 

2.8

2.1

1.0

3.8

4.3

5.4

4.3

3.9

1.6

1.0

3.7

4.6

4.8

5.2

*5.0

1.6

1.1

4.2

4.5

5.1

5.3

5.0

2.0

_£

4.2

5.4

5.5

4^

4.3

1.1

113.9

3.64

0.136

0.16

Sept.

fci

5.0

6.2

6.3

5.4

3.6

1.4

4.5

5.6

5.6

5.8

5.5

3.8

1.7

4.9

5.8

5.1

5.7

5.0

3.5

1.4

*4.3

6.3

4.7

5.3

4.1

3.9

1.3

5.1

132.7

4.42

0.166

0.18

In. 31.45

In. 20.67

Discharge measurement made on this day.
WESTPORT RIVER BASIN 

Adamsville Brook at Adamsville, R. I.

119

Location. Lat 41°33'30", long 71 0 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 1957.

Gage.--Water-stage recorder. Concrete control since Sept. 16, 1942. Altitude of gage is 

T5 ft (from topographic map).

Average discharge. 17 years, 13.4 cfs.

Extremes. Maximum discharge during year, 246 cfs Apr. 6 (gage height, 5.76 ft); minimum, 

OTOircfs July 17-20, Aug. 23-25.

1940-57: 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 table, water year 1956-57 (gage height, In feet, and discharge, 

In cubic feet per second)

2.995

3.00

3.03

3.06

3.10

3.15

3.2

3.3

0.06 

.07 

.14 

.26 

.50

l.OO

1.75

4.1

3.4

3.5 

3.7 

4.0 

4.5 

5.0 

5.5

12

25

50

101

161

219

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

O.67

.50

.42

.39

*T39

.39

6.4

4.6

3.4

2.9

2.6

2.45

2.35

2.05

1.95

1.85

1.75

1.85

1.95

1.95

1.95

1.85

7.2

7.1

^3

7.7

6.1

4.9

4.1

3.8

3.2

97.01

3.13

0.364

0.42

Nov.

3.1

*3.0

2.9

2.6

2.6

f^5-

2 '.45

4.7

4.O

3.6

3.8

3.6

3.4

3.2

3.1

3.5

13

18

15

12

16

17

14

11

12

14

13

11

8.9

229.5

7.65

0.890

0.99

Dec.

7.5

6.5

6.3

6.1

5.6

*6.3 

7.3

7.7

11

20

20

18

16

18

46

63

53

36

23

17

15

14

20

25

28

24

19

17

18

24

23

621.3

20.0

2.33

2.69

Jan.

17

14

11

10

9.6

9.3 

9.3

9.3

9.6

10

12

11

10

9.3

8.5

*7.7

6.7

6.5

6.3

5.8

6.5

13

69

119

50

28

19

16

15

14

13

555.4

17.9

2.08

2.40

Feb.

14

13

14

20

25

24 

2O

17

17

27

33

24

17

14

13

12

12

*11

11

11

9.6

8.9

8.7

8^5

8.7

9.1

13

14

-

429.5

15.3

1.78

1.86

Mar.

15

15

18

17

15

13 

12

16

39

48

35

23

18

15

13

17

21

18

16

21

34

*49

46

36

27

21

17

15

14

14

13

691

22.3

2.59

2.99

Apr.

12

18

36

35

35

189 

159

60

67

48

45

31

26

23

20

18

16

16

15

14

14

13

12

12

11

*12

12

13

12

11

1,005

33.5

3.90

4.35

May

10

9.1

8.5

7.9

7.5

7.1 

6.9

6.3

5.9

5.6

5.2

5.6

5.6

5.6

12

15

12

9.1

7.7

7.9

8.9

8.7

7.9

7.1

5.9

5.2

4.7

4.2

3.6

3.4

*3.0

223.1

7.20

0.837

0.96

June

2.8

276

2.35

2.15

1.95

1.85 

1.75

1.75

1.6

1.45

1.25

1.18

1.13

1.O6

.94

.88

.72

.62

.54

.42

.36

.33

.28

.26

.24

.20

.18

.16

.14

.13

31.27

1.04

0.121

0.14

July

0.12

.13

.10

.10

.12

.09 

.10

*.1O

.12

.10

.08

.OS

.10

.09

.08

.08

.07

^06

.06

.07

.08

.09

.09

*.08

.09

.10

.09

.08

.12

.10

.09

2.86

0.092

0.011

0.01

Aug.

0.08

.08

.08

713" .21

.10 

.10

.10

.08

.10

.03

.10

.08

.03

.12

.03

.03

.03

.10

.03

*.03

.07

.OS

76T

.16

.19

.15

.16

.13

.12

.03

3.2'

O.1O5

0.012

0.01

Sepb.

0.08

.07

.07

.07

.07

.09 

.09

.12

.08

.07

.14

.10

.09

.13

.16

.19

.32

.07

.09

.07

.12

.09

.12

.12

.12

.14

.15

.08

.08

.07

3.26

0.1O9

0.013

0.01

Calendar year 1956 : Max 82 Mln 0.16 Mean 14.7 Cfsm 1.71 In. 23.25

Water year 1956-57 : Max 189 Min O.06 Mean 10.7 Cfsm 1.24 In. 16.83

Peak discharge (base, 120 cfs). Jan. 24 (9.-3O 

(5.76 ft).

n.) 187 cfs (5.20 ft); Apr. 6 (2 to 4 p.m.) 246 cfs

Discharge measurement made on this day.
120 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 Middleboro.

Drainage area. 260 sq mi.

Records available.--October 1929 to September 1957.

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.--28 years, 469 cfs (adjusted for diversions).

Extremes. Maximum discharge during year, 1,950 cfs Apr. 7 (gage height, 7.70 ft); minimum, 11 cfs July 18; minimum daily, 12 cfs July 16-19.

1929-57: 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 NemasVet River for munic-

 ipal supply of Taunton and New Bedford; water diverted from Silver Lake by punipage into 

Taunton River basin above station for municipal supply of Brockton and several towns. 

Flow regulated by reservoirs and small powerplants above station.

Revisions (wa 

WSP [S 1201: 1931. WSP 1301:

^. Drainage area. WSP 781: 

1930(M), 1933(M), 1935(M).

1934. VSP 1051: 1933.

Rating table, water year 1956-57 (gage height, in feet, and discharge,

In cubic feet per second) 

(Backwater from aquatic vegetation July 8-26)

2.6 

2.8 

3.1 

3.4

11

20

81

3.7 

4.0 

6.0 

8.0

148

265

1,220

2,070

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

*140

129

114

108

105

99

195

409

346

306

256

197

171

161

155

148

143

137

129

121

114

112

164

386

373

328

278

252

224

200

178

6,179

199

31.5

Nov.

171

*178

168

171

178

151

140

137

155

161

155

148

158

148

140

134

129

232

418

391

350

490

605

515

450

475

590

545

510

460

8,653

268

29.0

Dec.

396

346

328

310

288

*265

252

252

296

530

585

620

655

670

1,030

1,310

1,390

1,270

1,090

945

820

735

785

955

1,010

980

875

795

770

810

720

22,083

712

25.0

Jan.

695

620

570

485

400

422

414

414

404

418

432

460

460

436

400

378

368

346

324

519

324

460

1,190

1, 750_

1,620

1,340

1,080

915

790

710

650

19,574

631

27.7

Feb.

620

580

560

600

675

700

665

630

595

745

920

870

775

680

*615

565

550

530

495

465

436

445

432

422

409

400

490

645

_

16,514

590

26.9

Mar.

655

630

645

655

605

550

510

530

770

925

890

800

730

670

655

625

600

580

520

515

595

820

930

930

885

840

775

650

*635

570

21,290

687

26.5

Apr.

590

640

910

910

905

,540

.920

,800

,760

,800

,620

,370

,200

,080

995

900

825

795

755

705

645

620

615

555

515

*550

540

530

490

460

28,540

951

26.4

May

460

396

332

310

288

208

185

247

265

238

229

238

256

252

252

252

224

204

229

224

296

283

314

283

260

252

234

288

256

224

204

8,183

264

28.4

June

185

171

171

168

134

117

143

134

121

119

112

108

101

95

92

83

86

88

83

90

97

94

92

94

88

88

85

78

68

57

3,242

108

31.1

July

57

107

77

54

93

*53

28

23

23

23

21

18

16

14

13

12

12

12

12

14

16

18

26

29

26

37

62

60

51

51

*69

1,127

36.4

28.4

Aug.

65

56

43

39

44

49

46

41

36

33

34

39

48

44

40

38

34

32

32

35

*30

27

26

24

26

61

74

60

53

52

52

1,313

42.4

28.7

Sept.

49

42

42

48

42

38

35

32

32

34

32

30

31

35

32

30

30

32

36

32

28

27

31

32

34

30

26

20

21

24

987

32.9

27.6

Adjusted for diversion

Mean 

Cfsm 

In.

231 

0.888 

1.02

317 

1.22

1.56

Calendar year 1956: 

Water year 1956-57:

737 

2.83 

3.27

659 

2.53 

2.92

617 

2.37 

2.47

713 

2.74 

3.16

978 

3.76 

4.20

292 

1.12 

1.30

Observed

Max 2,440 Mln 51 Mean 581 

Max 1,920 Mln 12 Mean 377

139 

0.535 

0.60

64.7 

0.249 

0.29

71.0 

0.273 

0.31

Adjusted

60.5 

0.233 

0.26

Mean 610 Cfsm 2.35 In. 31.95 

Mean 4O5 Cfsm 1.56 In. 21.16

* Discharge measurement made on this day.

t Diversions from Nemasket River for municipal supply of Taunton and New Bedford, and from Silver 

Lake into Taunton River basin for municipal supply of Brockton and several towns, equivalent in 

cubic feet per second. Records furnished by various municipalities.

Note. Discharge computed from twice-daily tape-gage readings Dec. 7 to Jan. 18.
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 from Balcolm 

Street Bridge at West Mansfield, Bristol County, 2 miles upstream from Hodge,3 Brook, 

and 3 miles southwest of Mansfield.

Drainage area. 19.2 sq mi.

Records available. --October 1953 to September 1957.

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, 120 cfs Apr. 9 (gage height, 4.52 ft); minimum 

daily, 0.2 cfs Aug. 26, Sept. 9-17.

1953-57: Maximum discharge, 519 cfs Aug. 20, 1955 (gage height, 6.22 ft); minimum 

daily, that of Aug. 26, Sept. 9-17, 1957.

Remarks . Records good. Plow regulated by Lake Mirimichi. 

municipal supply of Attleboro.

Diversion above station for

Rating tables, water year 1956-57, except periods of loe effect (gage 

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

Oct. 1 to Apr. 9 Apr. 10 to Sept. 30

2.6 3.0 3.0 13

2.7 4.5 3.2

2.8 6.7

Note. Same as following 

table above 3.2 ft.

2.2

2.3

2.4

2.5 

2.7 

2.9

2.2

5.2

10

3.2 22

3.5 38

4.0 68

4.5 117

5.0 191

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

4.2

3.8

3.8

4.0

4.5

4.2

13

12

8.7

7.0

5.5

5.3

5.1

5.1

4.7

5.3

5.3

5.1

4.9

4.7

4.5

4.5

8.8

11

8.7

7.3

7.0

6.2

6.2

5.5

5.3

191.2

6.17

1.37

Nov.

*5.7

6.0

7.3

7.5

6.7

5.7

5.3

5.1

5.5

5.5

10

20

16

10

7.5

6.4

5.7

12

16

IS

16

30

11

28

24

30

32

27

22

21

452.9

15.1

1.36

Dec.

19

17

16

*16

14

13

13

13

16

22

22

28

32

36

53

63

71

69

61

60

59

54

55

59

63

63

60

56

60

70

76

1,329

42.9

1.35

Jan.

72

66

61

58

55

50

48

49

48

b44

b48

49

43

b40

b40

b39

b38

b36

b34

34

35

41

b66

b70

li

78

72

63

b57

b55

50

1,617

52.2

1.34

Feb.

48

45

b48

45

45

44

42

39

38

48

50

48

*47

44

41

37

36

35

34

32

30

30

29

28

28

28

42

50

_

1,112

39.7

1.30

Mar.

52

55

52

47

42

38

33

33

48

58

59

56

55

51

46

45

46

38

39

48

59

"59 60

57

51

48

*48

46

43

45

47

1,504

48.5

1.34

Apr.

48

49

57

58

63

105

118

112

116

105

94

90

82

75

68

63

60

57

51

47

43

41

40

*40

37

35

35

34

32

li

1,886

62.9

1.35

May

30

28

26

24

24

24

23

21

20

18

18

18

18

18

18

18

18

17

17

18

20

20

19

20

18

16

15

T7

16

15

15

607

19.6

1.37

June

15

14

14

12

11

9.0

7.3

7.3

6.4

5.8

5.2

4.6

4.6

4.5

4.3

4.3.

3.8

3.2

3.1

3.5

3.0

2.8

2.4

3.3

4.3

3.4

3.2

3.1

2.3

2.0

172.7

5.76

2.35

July

1.3

1.1

1. 1

*1.5

1.5

1.6

1.7

1.7

1.8

2.0

1.9

1.7

1.7

1.4

1.2

1.3

1.3

1.3

1.2

2.7

5.2

*5.8

6.0

5.0

5.0

5.4

5.2

5.2

5.0

5.4

5.4

89.6

2.89

2.38

AUK.

5.2

4.8

4.5

 4^8 5.8

3.5

2.8

2.6

2.4

1.0

2.5

2.6

2.8

2.7

2.7

3.0

2.6

2.0

3.4

3.5

2.2

1.7

.6

.5

.6

.2

1.6

1.0

.3

.3

.3

74.5

2.40

2.06

Sept.

0.3

.4

.4

.7

.3

.3

.3

.3

.2

*.2

.2

.2

.2

.2

.2

.2'.Z

.3

1.4

2.1

2.0

1.3

 1.3

.8

.5

.9

1.7

1.8

1.8

2.8

23.5

0.783

2.65

Adjusted for diversion

Mean 

Cfsm 

In.

7.54 

0.393 

0.45

16.5 

0.859 

0.96

Calendar year 1956: 

Water year 1956-57;

44.2 

2.30 

2.66

53.5 

2.79 

3.21

41.0 

2.14 

2.22

49.9 

2.60 

2.99

64.2 

3.34 

3.73

20.9 

1.09 

1.26

Observed

Max 169 Min 1.3 Mean 37.6 

Max 118 J Mln 0.2 Mean 24.8

8.11 

0.422 

0.47

5.26 

0.274 

0.32

4.46 

0.232 

0.27

3.43 

0.179 

0.20

Adjusted

Mean 38.9 Cfsm 2.03 In. 27.58 

Mean 26.5 cfsra 1.38 in. 18.74

* Discharge measurement made on this day.

 t Diversion fcr municipal supply of Attleboro, 

furnished by city of Attleboro.

b Stage-discharge relation affected by ice.

squivalent in cubic feet per second. Records

50569Z O - 59 - 9
122 TAUNTON RIVER BASIN

Wading River near Norton, Mass.

Location.~Lat 41°56'5l", long 71°10'38", on left bank 200 ft downstream from bridge on 

State Highway 140, 0.9 mile upstream from confluence with Rumford River, and I? miles 

southeast of Norton, Bristol County.

Drainage area. 42.4 sq mi.

Records available. June 1925 to September 1957.

Gage. Water-stage recorder. Datum of gage is 49.63 ft above mean sea level, datum of 

 1929. 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. 32 years, 71.5 cfs (adjusted for diversion).

Extremes. Maximum discharge during year, 313 cfs Apr. 7 (gage height, 7.81 ft); minimum, 

0.8 cfs Sept. 29; minimum daily, 0.9 cfs Sept. 29.

1925-57: Maximum discharge, 1,170 cfs Aug. 20, 1955 (gage height, 10.98 ft); minimum, 0.3 cfs Sept. 10, 1926.

Remarks. Records excellent except those for periods of ice effect or shifting-control, 

which are good, and those for period of no gage-height record, which are fair. Plow 

regulated by powerplants and ponds above station. Diversion above station for municipal supply of Attleboro.

Revisions (water years). WSP 871: 1938. WSP 1301: 1929-33(M) .

Rating table, water year 1956-57, except periods of ice effect or shifting 

control (gage height, in feet, and discharge, in cubic feet per second)

4.4

4.5

4.6

4.7 

5.0

0.9

1.7

3.0

4.7

12

5.2

5.5 

6.0 

7.0 

8.0

82

197

344

Discharge, in cubic feet per second, Water year October 1956 to September 1957

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.

12

12

17

16

6.2

5.8

38

56

26

19

19

18

16

14

15

17 

15

15

14

13

12

13

42

41

36

33

20

14

19

21

*20

635.0

20.5

1.37

Nov.

21

22

19

17

19

19

20

18

19

18

16

21

35

28

23

20 

15

32

49

46

42

64

85

66

52

64

78

72

57

*51

1,108

36.9

1.36

Dec.

45

40

33

38

38

36

36

31

45

58

60

74

82

95

161

209 

205

180

149

132

124

114

127

134

148

149

134

*127

126

143

b!35

3,208

103

1.35

Jan.

b!20

b!25

bl!5

101

92

88

85

86

85

83

b75

b75

75

a70

a65

a65 

a65

a63

a60

a57

a60

a65

174

a250

a225

a!75

a!50

136

125

115

*103

3,228

104

1.34

Feb.

96

91

b85

94

100

98

91

87

82

111

136

118

105

95

90

82 

80

80

75

76

69

64 E?

64

66

69

*101

120

_

2,489

88.9

1.30

Mar.

118

107

108

102

92

84

80

81

121

141

136

123

113

106

98

93

93

92

83

88

101

129

134

124

1 112

100

93

89

85

86

90

3,202

103

1.34

Apr.

*92

108

136

130

138

265

294

236

274

280

247

214

194

178

156

142 

126

121

114

103

94

87

78

68

68

65

65

72

71

*58

4,274

142

1.35

May

53

"40 54

24

41

45

44

38

36

40

32

32

33

31

34

31 

29

28

28

30

35

35

33

31

29

26

27

31

*28

24

23

1,045

33.7

1.37

June

23

22

22

20

18

16 4

14

12

11

10

9.3

8.8

8.3

7.6

7.6

6.9 

6.9

5.6

5.4

5.4

4.9

4.5

4.4

6.0

6.9

6.5

6.2

*5.4

4.7

4.4

293.7

9.79

2.35

July

4.2

3.3

3.2

3.0

3.3

3.5

3.5

3.7

3.0

2.7

2.7

3.2

3.7

3.2

4.2

<LV 

4.7

4.2

4.2

3.7

3.3

3.7

3.7

3.7

3.8

3.7

3.2

2.7

3.2

*4.0

3.7

110.6

3.57

2.38

Aug.

3.8

3.0

2.6

2.6

3.3

3.8

3.7

3.7

3.0

4.0

6.9

7.1

6.2

4.4

4.0

3.5 

3.3

3.0

3.2

3.3

3.5

3.5

3.0

2.7

2.9

4.0

3.8

*3.5

3.5

3.2

2.9

114.9

3.71

2.06

Sept.

2.6

2.6

3.0

3.5

3.5

3.0

2.9

3.0

2.9

3.3

3.3

3.3

3.2

2.6

1.8

2.4

3.7

3.5

3.3

3.2

2.7

2.9

3.2

3.3

3.2

3.2

2.9

2.1

.9

*lT5

86.5

2.88

2.65

Adjusted for diversion

Mean 

Cfsm 

In.

21.9 

0.517 

0.59

38.2 

0.90J

1.0]

Calendar year 195& 

Water year 1956-57:

105 

2.48 

2.85

105 

2.48 

2.87

90.2 

2.13 

2.22

105 

2.48 

2.84

144 

3.40 

3.78

35.1 

0.828 

0.95

Observed

Max 324 Min 3.7 Mean 77.7 

Max 294 Min 0.9 Mean 54.2

12.1 

0.285 

0.32

5.94 

0.140 

0.16

5.76 

0.136 

0.16

5.53 

0.130 

0.15

Adjusted

Mean 79.0 Cfsm 1-86 in. 25.37 

Mean 55.9 cfsm 1-32 m. 17.90

Peak discharge (base, 280 cfs). Apr. 7 (1:30 p.m.) 313 cfs (7.81 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.

a No gage-height record; discharge estimated on basis of weather records and records for Wading 

River at West Mansfield.

b Stage-discharge relation affected by ice.

Note. Shifting-control method used May 3, 4, May 8 to Sept. 30.
PROVIDENCE RIVER BASIN 123

Kettle Brook at Worcester, Mass.

Location. Lat 42°13'55", long 71°50'07", on right tank 75 ft downstream from Webster 

Street Bridge at Worcester, Worcester County, 1 mile upstream from Beaver Brook.

Drainage area. 31.3 sq mi.

Records available. August 1923 to September 1957. Prior to October 1950, published as 

Blackstone River at Worcester.

Gage. Water-stage recorder. Concrete control since Oct. 28, 1937. Datum of gage is 

4"72.86 ft above mean sea level, datum of 1929.

Average discharge. 34 years, 53.2 cfs (adjusted for diversion).

Extremes. Maximum discharge during year, 246 cfs Jan. 23 (gage height, 3.82 ft); minimum, 

3.1 cfs Nov. 3.

1923-57: 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. Flow regulated by reservoirs above station.

Revisions (water years). WSP 1301: 1927(M).

Rating table, water year 1956-57 (gage height, In feet, and discharge, 

In cubic feet per second)

2.1 

2.3 

2.5 

2.7

4.8

9.4

16

27

3.0 

3.3 

3.6

110

180

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

14

12

12

12

14

13

29

23

17

15

14

14

13

13

12

12

12

12

11

11

11

11

18

19

15

14

13

13

12

*12

12

435

14.0

4.89

Nov.

33

36

16

4.S

13

13

5.0

20

2O

13

12

13

12

9.1

6.6

10

14

23

37

16

16

23

26

21

17

33

36

26

21

17

561.5

18.7

6.44

Dec.

16

15

14

14

15.

13

14

14

20

20

19

42

*53"46

42

42

46

41

33

29

27

29

4O

40

48

45

37

33

34

37

31

947

3O.5

5.97

Jan.

27

23

23

21

20

19

20

*20

19

22

22

20

19

19

19

19

18

17

16

15

16

33

169

~ST 17O

64

55

50

53

48

44

1,187

38.3

6.92

Feb.

42

41

39

46

49

45

42

40

42

60

55

43

36

33

30

29

29

26

26

*26

24

23

24

25

26

32

87

78

_

1,098

39.2

7.07

Mar.

57

48

43

38

34

33

32

38

85

100

75

62

58

55

54

75

80

67

58

57

61

67

67

61

54

*54

52

43

35

31

29

1,703

54.9

7.78

Apr.

26

39

55

45

68

168

158

100

117

110

100

9O

82

73

68

66

62

61

58

55

52

48

45

43

38

33

32

29

27

25

1,973

65.8

8.39

May

*23

2O

23

22

21

21

18

15

15

16

39

39

33

29

30

29

24

24

22

24

29

27

26

28

22

20

20

*18

16

14

12

719

23.2

8.45

June

11

12

12

11

11

10

11

9.7

8.9

8.9

10

11

11

11

11

11

9.7

8.4

9.1

12

11

9.4

8.1

2*6

8.1

 17

24

18

16

15

343.9

11.5

9.02

July

14

10

8.9

8.1

8.4

8.1

7.8

7.6

.6

.3

.3

.3

.1

.1

7.1

7.1

6.8

6.6

6.4

6.O

ir1

Te

10

10

*9.7

9.4

9.1

9.1

9.1

9.4

271.2

8.75

9. OS

Aug.

8.9

9.7

1O

12

12

29

23

13

12

11

11

11

9.1

8.6

8.4

11

12

12

*12

11

18

17

11

11

11

12

12

12

11

9.7

9.7

380.1

12.3

7:91

Sept.

9.7

10

10

8.9

8.9

11

13

13

12

12

11

10

10

10

10

9.7

9.1

9.1

14

IS

14

9.1

8.9

10

12

12

*12

12

12

12

333.4

11.1

5.34

Adjusted for diversion

Mean 

Cfsm 

In.

18.9 

0.6O4 

0.70

25.2 

O.805 

0.90

36.5 

1.17 

1.35

45.2 

1.44 

1.67

46.3 

1.48 

1.54

62.7 

2.OO 

2.31

74.2 

2.37 

2.64

31.6 

1.01 

1.17

Observed

Calendar year 1956: 

Wat or year 1956-57:

Max 575 Mln 4.8 Mean 55.0 

Max 170 Mln 4.8 Mean 27.3

20.5 

0.655 

O.73

17.8 

0.569 

O.66

20.2 

0.645 

0.74

Adjusted

16.5 

0.527 

0.59

Mean 62.5 Cfsm 2.0O In. 27.19 

Mean 34.5 Cfsm 1.10 In. 15. OO

Peak discharge (base, Z5O cfs). No peak above base.

* 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°13'49", long 71°42Ml", 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 1957.

Gage. Water-stage recorder. Altitude of gage is 335 ft (from topograohic map). Prior to 

~I3ec. 7, 1939, staff gage at same site and datum,

Average discharge. 18 years, 41.3 cfs.

Extremes.--Maximum discharge during year, 209 cfs Apr. 13 (gage height, 2.83 ft); minimum 

daily, 0.5 cfs Aug. 3.

1939-57: Maximum discharge, 820 cfs Aug. 20, 1955 (gage height, 5.15 ft); minimum 

daily, 0.3 cfs Oct. 14-17, 1942.

Remarks. Records good 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 1956-57 (gage height, In feet, and discharge,

In cubic feet per second) 

(Shifting-control method used Aug. 1 to Sept. 19)

Oct. 1 to Sept. 19

0.5 0.4 1.3

.7 .8 1.6

.6 1.6 2.0

.9 3.0 2.5

1.0 5.4 3.0

150

240

Sept. 2O-3O

0.5 0.5

.6 .8

.7 1.3

.8 2.8

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

28

55

31

11

8.4

16

11

8.8

8.4

7.8

7.4

7.0

6.5

6.0

5.8

5.6

5.4

5.2

5.1

5.0

5.0

9.0

10

9.0

8.0

7.2

6.8

6.6

6.4

6.4

332.8

10.7

0.420

0.49

Nov.

6.5

6.8

7.0

6.0

5.0

4.8

*478

4.8

5.4

5.4

6.6

16

23

19

16

14

13

17

18

25

54

58

47

40

36

38

36

34

28

26

621.1

20.7

0.812

0.91

Dec.

25

25

24

20

8.0

6.6

772

8.0

11

10

9.2

16

*21

24

26

27

26

29

25

21

24

28

39

56

IS

76

65

58

58

52

54

975.0

31.5

1.24

1.42

Jan.

48

43

39

37

35

33

35

*38

36

37

34

34

34

33

32

32

31

31

30

29

28

34

65

62

65

66

66

65

65

63

60

1,340

43.2

1.69

1.95

Feb.

59

58

57

55

54

51

50

50

49

53

50

47

45

44

43

42

43

33

37

*35

30

27

26

25

35,

24

28

26

1,164

41.6

1.63

1.70

Mar.

30

30

30

27

26

27

32

36

44

42

30

28

26

25

24

28

30

33

36

39

40

39

48

52

44

38

*41

48

47

47

45

1,112

35.9

1.41

1.62

Apr.

44

48

45

37

48

81

84

70

96

101

94

95

188

154

108

41

53

55

58

59

57

46

40

28

37

41

41

40

40

34

1,963

65.4

2.56

2.86

May

*28

21

~ZZ 16

33

34

31

24

23

22

35

40

39

38

38

40

34

31

28

37

44

39

36

40

37

36

34

*35

34

31

28

1,008

32.5

1.27

1.47

June

27

26

26

24

22

21

21

21

19

17

16

16

16

14

14

14

13

12

11

17

18

18

17

14

13

22

*32

26

24

24

575

19.2

0.753

0.84

July

21

19

16

16

16

14

13

11

9.2

8.8

7.2

5.7

5.7

6.6

5.4

4.6

3.8

3.0

2.4

2.4

4.4

2.9

1.9

1.3

.9

*.8

iTe

2.2

3.6

1.8

.8

213.2

6.88

0.270

0.31

Aug.

0.9

.6

.5

1.2

8.2

6.7

2.9

2.1

1.2

1.0

3.2

1.9

1.6

1.6

1.9

1.9

1.2

.8

.8

.9

.9

.9

.8

.7

.8

1.2

*2.7

1.9

1.9

2.5

2.7

58.1

1.87

0.073

0.08

Sept.

1.1

1.0

2.0

2.5

2.9

2.7

2.5

2.5

1.6

2.0

2.7

2.7

2.5

1.9

1.3

.9

1.6

2.9

3.0

2.6

2.8

2.0

1.3

1.7

2.4

2.4

*1.9

1.5

.9

jj_

60.5

2.02

0.079

0.09

Calendar year 1956: Max 226 Mln 3.0 Mean 49.4 Cfsm 1.9* In. 26.35

Water year 1956-57: Max 188 Mln 0.5 Mean 25.8 Cfsm 1.01 In. 13.74

* Discharge measurement made on this day.

Note.--No gage-height record Oct. 11 to Nov. 7, Dec. 30 to Jan. 8, Jan. 14-21; discharge estimated 

on basis of 2 discharge measurements, weather records, recorded range In stage, and records for 

Kettle Brook at Worcester and Ware River near Barre. Discharge In cubic feet per second per square 

mile and runoff In Inches may not represent natural flow because of regulation.
PROVIDENCE RIVER BASIN 125

Blackstone River at Northbridge, Mass.

Location.--Lat 42°09'13", long 71°39'09", on left bank 800 ft downstream from Paul Whitin 

Co. dam at Northbridge, Worcester County, and 3 miles downstream from Quinsigamond 

River.

Drainage area.--139 sq mi.

Records available. October 1939 to September 1957. 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.--18 years, 235 cfs (adjusted for diversion).

Extremes. Maximum discharge during year, about 1,500 cfs Apr. 6; minimum daily, 2.0 cfs 

Aug. 28.

1939-57: Maximum discharge, 16,900 cfs Aug. 20, 1955 (gage height, 16.7* 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 dischE-rge, 2 cfs 

Aug. 29, 1941, Sept. 5, 1942, Aug. 28, 1957.

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. Plow 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). WSP 1301: 1940(M).

Discharge, In cubic feet per second, water year October 1956 to September 19f7.

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.

122

80

72

73

131

105 

268

206

171

150

126

113

128

88

110

128

122

141

113

95

108

110

238

183

158

136

141

118

128

95

93

4,050

131

32.1

Nov.

133

171

171

126

128

128 

*126

128

147

126

102

115

90

80

76

87

65

115

166

147

123

238

217

185

150

238

265

220

180

160

4,403

147

24.1

Dec.

150

118

126

108

100

95 

98

88

110

150

*136

293

330

330

350

400

470

410

380

360

330

355

365

385

400

410

360 

300

270

250

230

8,257

266

17.5

Jan.

2 2O

200

188

183

180

169 

158

166

*163

158

158

163

144

145

150

140

150

135

125

130

140

220

900

1,000

560

430

360 

340

315

2 9O

270

8,050

260

14.9

Feb.

260

250

250

280

300

265 

232

217

214

320

370

300

250

230

210

200

190

195

*190

185

180

170

175

160

185

220

325 

380

-

6,703

239

25.8

Mar.

320

290

265

240

215

200 

210

230

450

520

420

350

310

300

280

325

360

320

300

310

320

370

350

350

310

280

*253 

244

235

232

280

9,439

304

25.1

Apr.

250

270

420

350

400

1,200 

1,050

800

1,050

900

700

600

540

520

460

430

380

355

355

350

335

310

280

270

250

250

240 

230

210

162

13,917

464

10.1

May

*158

2OO

174

86

105

188 

194

177

75

122

271

268

241

203

211

268

194

180

177

177

220

220

188

250

226

188

171 

*163

150

123

128

5,696

184

25.8

June

61

78

126

128

98

110 

95

98

88

85

88

98

80

95

71

69

78

67

88

183

95

80

69

80

BO

108

115

98

2,951

98.4

28.2

July

169

166

61

16

20

62 

49

52

110

58

19

47

62

56

35

58

47

56

117

59

8.0

10

126

50

55

*90

&

81

40

23

1,811.4

58.4

36.2

Aug.

90

68

4.0

13

138

28 

52

97

86

17

52

104

80

3.3

13

113

111

2.3

2.3

58

ess

3115

44

2.6

12

173

*139 

2.0

4.4

129

1,897.9

61.2

37.6

Sept.

Z^Z

3.2

127

47

61

22

26

4.0

64

71

73

90

55

2.6

15

69

124

153

360

370

33.0

315

380

386

390

3110

*370 

100

28

91

1,812.0

60.4

37.6

Adjusted for diversion

Mean 

Cfsm 

In.

98.6 

0.709 

O.B2

123 

0.88E 

0.98

Calendar year 1955: 

Water year 1956-57:

249 

1.79 

2.06

245

1.76 

2.03

214 

1.54 

1.60

279 

2.01 

2.32

454 

3.27 

3.64

158 

1.14 

1.31

Observed

*ax l,80o Mln 9.0 Mean 304 

Max 1,200 Bin 2.O Mean 189

70.2

0.505 

0.56

22.3 

0.160 

0.18

23.6 

0.170 

0.20

22.8 

0.164 

0.18

Adjusted

Mean 282 Cfsm 2.03 In. 27.65 

Mean 163 Cfsm 1.17 In. 15.88
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 ft downstream from mllldam at Porestdale, Providence County, 1 mile east of Slatersville, and 1.6 miles upstream from mouth.

Drainage area. 93.3 sq mi.

Records available. September to December 1909 and January 1912 to July 1913 (gage heights 

 only) /January 1940 to September 1957. 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. 17 years, 161 cfs.

Extremes. Maximum discharge during year, 1,060 cfs Jan. 23 (gage height, 5.46 ft); minimum daily, 8.3 cfs Oct. 2.

1940-57: 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 daily, 5.2 cfs Oct. 7, 1948.

Maximum discharge known since at least 1886, about 5,800 cfs Mar. 19, 1936, by computation of flow over dam 1 mile above station.

Remarks. Records excellent. Plow regulated by mills and reservoirs a^ove station.

Rating table, water year 1956-57 (gage height, in feet, and discharge, 

in cubic feet per second)

1.5

1.6

1.7

1.8

1.9

2.0

5.7

9.5

15

39

2.3 

2.6 

3.0 

3.5 

4.0 

5.0

75

120

198

329

490

870

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

14

8.3

127

*145 -§7

19

27

25

98

138

133

16

16

16

86

86

83

26

23

25

25

26

32

31

25

20

19

20

20 

20

21

1,457.3

47.0

0.504

0.58

Nov.

27

48

52

50

106

76

80

*80

81

16

13

18

19

20

84

86

17

28

37

140

105

45

137

109

85

201

235

T96

187 

144

2,522

84.1

0.901

1.01

Dec.

30

19

125

144

91

94

91

*21

64

224

200

202

272

270

288

360

473

376

329

302

E71

203

311

320

341

372

285

231

160 

221

194

6,884

222

2.38

2.74

Jan.

187

162

160

158

150

143

141

141

139

139

123

115

114

108

100

100

100

90

82

88

110

143

652

738

401

311

268

250

233 

210

6,054

195

2.09

2.41

Feb.

196

189

183

212

228

191

174

164

158

250

*291

216

183

166

158

148

152

148

143

143

132

125

T27

128

132

139

266

282

-

5,024

179

1.92

2.00

Mar.

235

214

216

200

183

174

174

172

308

385

279

235

228

219

210

233

261

235

214

226

235

288

288

258

235

216

207

198

*198 

200

214

7,138

230

2.47

2.85

Apr.

205

245

391

285

320

869

730

542

726

642

49O

410

363

320

293

258

240

231

223

205

191

177

*166

164

144

145

143

141

135

112

9,506

317

3.40

3.79

May

HO

104

101

100

100

100

92

94

90

86

76

89

98

92

96

86

78

76

74

76

96

101

85

78

78

67

72

118

114 

89

74

2,790

90.0

0.965

1.11

June

66

65

62

61

56

47

52

48

48

44

33

28

*26

30

32

3O

29

27

30

28

26

25

25

31

34

37

43

55

50 

16

1,186

39.5

0.423

0.47

July

25

21

24

24

!§_

23

23

21

24

.2°.

23

27

25

24

25

24

24

23

23

23

23

24

*24

23

23

23

23

23

23 

22

22

727

23.5

0.252

0.29

Aug.

22

21

21

22

22

22

22

21

21

21

21

23

22

21

22

21

21

21

21

20

2O

20

20

20

22

*E4

23

22

21 

21

22

663

21.4

0.229

0.26

Sept.

20

20

21

20

19

19

18

20

20

19

20

20

20

20

20

22

T9

18

18

19

20

20

20

19

19

*18

18

18

18 

19

581

19.4

0.208

O.23

Calendar year 1956: Max 1,040 Min 7.8 Mean 188 cfsm 2.O2 in . 27.47

Water year 1956-57: Max 869 Mln 8.3 Mean 122 cfsm 1.31 In. 17.74

Peak discharge (base. 880 cfs).--Jan. 23 (11 p.m.) 1,060 cfs (5.46 ft); Apr. 6 (3:30 to 4 p.m.) 

1,010 cfs (5.36 ft).

* Discharge measurement made on this day.

Note. Discharge in cubic feet per second per square mile and runoff in inches may not represent 

natural flow because of regulation.
PROVIDENCE RIVER BASIN 

'Blackstone River at Woonsocket, R. I.

127

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 1957.

Gage.--Water-stage recorder. Datum of gage is 107.42 ft above mean sea level, datum of 

TT929.

Average discharge. 28 years, 714 cfs (adjusted for diversion).

Extremes. Maximum discharge during year, 3,850 cfs Jan. 24 (gage height, 6.29 ft); minimum daily, 71 cfs July 29.

1929-57: 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-area determination of peak flow, affected by failure of Horseshoe Dam on Mill River; ninimum 

daily, 21 cfs Aug. 11, 1934, flow diverted around station in Hamlet Trench not included.

Maximum stage known since at least 1645, that of Aug. 19, 1955.

Remarks.--Records good except those for periods of no gage-height record, which are fair. 

Flow 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 1956-57 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Jan. 23 Jan. 24 to Sept. 30

1.6 

2.0 

2.5

153

268

465

3.0 735

4.0 1,480

5.0 2,440

1.16 

1.2

1.6 

2.0

169

296

2.5 520

3.O 800

4.0 1,530

6.0 3,530

Discharge, In cubic feet per second, water year October 1956 to September 19F7

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.

254

216

254

*350

312

216

276

482

398

335

358

225

225

199

241

291

260

210

199

183

TTO" 170

250

305

259

244

231

207

199

204

230

7,953

257

32.1

Nov.

213

270

305

260

288

257

260

*267

290

222

183

183

211

184

244

257

188

312

382

422

358

431

552

422

342

616

849

TOT

590

492

10,551

352

24.1

Dee.

316

267 340"

431

358

362

358

*291

319

611

572

801

1,000

1,000

1,050

1,200

1,400

1,250

1,150

1,100

1,000

960

1,100

1,150

1,200

1,250

1,100

900

850

820

800

25,306

816

17.5

Jan.

760

660

640

620

600

580

560

540

520

520

502

472

431

418

444

418

431

398

366

37T

406

647

2,200

3,180

2,030

1,390

1,200

1,080

1,010

953

880

25,230

814

14.9

Feb.

841

808

822

900

967

912

834

742

712

1,020

1,180

953

*816

755

725

650

606

661

645

623

606

563

553

508

595

633

1,020

1.240

_

21,890

782

25.8

Mar.

1,080

920

907

791

725

661

6^3

719

,110

,660

,350

,14O

,010

933

894

933

1,210

1,100

933

954

1,070

1,190

1,120

1,160

1,030

933

861

823

*809

785

940

30,434

982

25.1

Apr.

842

901

1,400

1,180

1,190

2,720

2,970

2,310

2,490

2,530

2,070

1,780

1,550

1,550

1,360

1,280

1,120

1,060

1,050

933

1,000

842

*816

791

737

731

677

755

645

617

39,897

1,330

10.1

May

410

528

483

463

396

453

478

468

428

3O6

661 64"5

639

584

538

573

528

448

448

463

563

573

517

492

487

395

452

547

502

325

15,179

490

25.8

June

313 2~SO~

249

291

276

259

269

252

226

205

196

191

193

179

205

155

155

158

153

*2S8

205

174

153

191

185

163

269

259

226

179

6,377

213

28.2

July

185

226 19~2

114

97

90

121

117

119

130

130

180

110

86

105

170

140

110

108

170

105

84

*82

182

102

126

126

80

71

119

103

3,880

125

36.2

A^US.

90

145

120

80

91

163

86

117

164

127

87

120

164

135

85

77

168

152

83

7J5

105

115

162

108

87

*93

*215

TC5

96

91

181

3,745

121

37.6

Sept.

134

85

77

157

108

118

89

110

75

113

128

126

139

123

87

77

128

165

120

135

130

90

78

110

115

*118

131

100

136

102

3,404

113

37.6

Adjusted for diversion

Mean 

Cfsm 

In.,

224 

0.538 

0.62

328 

0.788 

0.88

Calendar year 1956: 

Water year 1956-57:

799 

1.92 

2.21

799 

1.92 

2.21

756 

1.82 

1.89

957 

2.30 

2.65

1,320 

3.17 

3.54

464 

1.12 

1.29

Observed

Max 4,600 Mln 111 Mean 867 

Max 3,180 Mln 71 Mean 531

184 

0.442 

0.49

89.0 

0.214 

0.25

83.2 

0.200 

0.23

Adjusted

75.9 

0.182 

0.20

Mean 846 Cfsm 2.03 In. 27.66 

Mean 505 Cfsm 1.21 In. 16.46

Peak discharge (base, 5,400 cfs).--Jan. 24 (12:50 a.m.) 5,850 cfs (6.29 ft).___________________

* Discharge measurement made on this day.

t Diversion, equivalent In cubic feet per second, from Nashua River basin for municipal supply of 

Worcester, Mass. Records furnished by city of Worcester.

Note. No gage-height record Dec. 13 to Jan. 10, July 10-18, Sept. 18-25; discharge estimated on 

basis of weather records, recorded range in stage, and records for Woonasquatueket River at Centerdale and Branch River at Forestdale.
128 PROVIDENCE RIVER BASIN

Woonasquatucket River at Centerdale , R. I.

Location. Lat 41°51'32", long 71°29'16", on right bank 75 ft downstresm from bridge on 

U. S. Highway 44, at Centerdale, Providence County, and 6^ miles upstream from mouth.

Drainage area. 38.3 sq ml.

Records available. July 1941 to September 1957.

Gage. Water-stage recorder. Altitude of gage Is 95 ft (from topographic map).

Average discharge. 16 years, 68.6 cfs.

Extremes . Maximum discharge during year, 470 cfs Apr. 6 (gage height, 4.64 ft); minimum 

dally, 7.2 cfs Sept. 17.

1941-57: 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 

dam three-quarters of a mile below station.

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

Flow regulated by mills and reservoirs above station. Discharge Includes leakage 

through bypass canal.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

20

22

23

24

*24

22

28

22

24

23

23

22

19

19

20

21

22

22

22

21

19

19

24

24

24

23

22

19

19

19

20

675

21.8

0.569

0.66

Nov.

22

22

21

19

.18

19

20

 21

22

21

19

19

19

20

21

22

21

27

25

26

26

34

27

26

24

70

57

44

36

36

804

26.8

0.700

0.78

Dec.

33

30

32

33

33

33

*34

31

32

38

38

46

46

56

91

94

91

70

64

59

58

53

71

70

72

73

61

61

63

70

61

1,697

54.7

1.43

1.65

Jan.

55

58

53

54

52

44

53

50

49

51

49

44

44

46

a45

a44

a45

a43

39

40

*44

56

150

106

77

92

105

loo

99

93

87

1,967

63.5

1.66

1.91

Feb.

83

84

80

87

84

82

77

75

73

107

111

100

91

83

77

70

72

*72

66

64

61

59

56

58

63

62

92

83

-

2,172

77.6

2.03

2.11

Mar.

91

92

93

85

75

68

74

76

120

141

127

113

103

92

87

95

100

93

84

93

104

*115

121

114

103

94

91

85

81

91

2,981

96.2

2.51

2.89

Apr.

89

115

139

129

174

411

344

290

340

292

249

212

181

161

146

129

120

114

111

103

102

97

89

74

73

75

71

72

74

65

4,641

155

4.05

4.51

May

58

63

*55

51

49

53

51

47

46

46

45

44

46

43

42

40

39

37

37

41

42

40

40

39

36

32

43

40

42

38

 35

1,360

43.9

1.15

1.32

June

34

32

32

35

34

34

32

32

34

34

37

34

31

31

27

28

31

28

28

28

26

23

24

30

31

27

27

26

23

22.

895

29.8

0.778

0.87

July

25

26

27

22

18

19

21

24

24

23

22

22

20

17

21

22

22

23

22

19

16

17

*20

21

21

22

20

17

17

20

21

651

21.0

0.548

0.63

Aug.

21

21

18

16

14

15

18

20

21

22

17

15

16

18

15

17

17

15

13

13

14

16

19

19

16

15

16

21

30

17

14

539

17.4

0,454

0.52

Sept.

14

13

13

13

12

12

12

13

12

12

13

13

*12

12

12

18

il

9.3

11

12

11

13

12

11

10

*12

8.9

10

11

10

354.4

11.8

0.308

0.34

Calendar year 1956: Max 321 Mln 18 Mean 73.7 Cfsm 1.92 In. 26.21

Water year 1956-57 : Max 411 Mln 7.2 Mean 51.3 Cfsm 1.34 In. 18.19

* 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 Branch River at Forestdale and Blackstone River at Woonsocket.

Note. Discharge In cubic feet per second per square mile and runoff In Inches may not represent 

natural flow because of regulation.
PAWTUXET RIVER BASIN 129

South Branch Pawtuxet River at Washington, R. I.

Location. Lat 41°41'24", long 71°33 I 59", on right bank 150 ft downstream from highway 

bridge at Washington, Kent County, and 0.9 mile upstream from outlet of Tiog-ie Lake.

Drainage area. 63.8 sq mi.

Records available. October 1940 to September 1957.

Gage.--Water-stage recorder. Altitude of gage is 230 ft (from topographic map).

Average discharge . 17 years, 127 cfs (adjusted for storage and diversion).

Extremes. Maximum discharge during year, 421 cfs Apr. 10 (gage height, 2.34 ft); minimum 

aiTTy, 5.7 cfs Sept. 29.

1940-57: 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 table, water year 1956-57 (gage height, in feet, and discharge, 

in cubic feet per second)

1.19

1.2

1.3

1.4

5.7 

6.2

2.0 

2.5

175

540

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

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.

100

72

*72

76

73

1239"

124

134

132

119

49

15

18

106

99

120

157 TTo15

21

114

80

76

76

70

15

19

81

74

73

2,341

75.5

-9.97

Nov.

72

71

17

18

64

63

63

67

72

14

12

Ts

*62

55

61

55

13

27

96

83

97

30

108

19

18

112

117

124

125

121

1,872

62.4

+17.5

Dec.

20

25

120

109

116

118

105

18

26

123

123

127

124

*125

38

42

183

192

184

190

184

67

80

128

128

149

259" 229

187

128

149

3,766

121

+31.1

Jan.

229

235

235

235

145

36

171

140

140

140

116

30

34

135

140

140

144

96

20

?2

131

149

193

244

TTT

28

110

235

235

235

235

4,549

147

-4.33

Feb.

252

252

223

223

223

217

211

138

26

87

229

235

235

235

171

20

23

120

128

128

124

75

18

39

217

*211

223

223

_

4,506

161

-16.8

Mar.

166

26

68

205

205

205

211

177

52

149

211

223

175

205

172

30

69

175

229

244

244

244

235

41

193

235

244

*223

159

26

24

5,065

163

+5.75

Apr.

83

134

223

175

235

320

360

344

392

414

294

328

278

278

228

211

260

269

181

187

211

121

129

149

*235

191

20

27

103

211

6,591

220

+25.7

May

114

83

81

20

41

117

96

89

81

81

20

43

106

82

92

94

114

28

43

154

105

91

86

78

26

35

92

80

72

17

72

2,333

75.3

+3.81

June

17

23

82

76

81

60

64

16

15

59

52

56

55

46

12

11

40

44

46

46

36

9.5

3~8.9

42

38

38

44

10

9.5

1,174.9

39.2

-10.9

July

24

23

23

8.3

*36

10

7.2

33

43

35

33

32

8.3

9.5

36

34

45

30

48

8.3

6.7

44

74

*63

58

58

11

15

70

62

68

1,056.3

34.1

-18.4

Aug.

55

57

8^3

15

59

55

60

60

53

11

15

59

53

9.5

54

48

8.3

10

56

55

50

48

44

8.3

11

57

55

47

47

47

9.5

1,219.9

39.4

-20.6

Sept.

7.2

9.5

58

B6

50

45

9.5

10

38

41

45

37

*33

8.3

7.9

35

37

35

33

35

8.3

7.7

32

30

*33

39

36

7.2

43 5.7

872.3

29.1

-12.9

Adjusted for diversion and change in reservoir contents

Mean 

Cfam 

In.

65.5 

1.03 

1.18

79.9 

1.25 

1.40

Calendar year 1956! 

Water year 1956-57:

153 

2.40 

2.76

142 

2.23 

2.57

144 

2.26 

2.35

169 

2.65 

3.06

245 

3.84 

4.29

79.1 

1.24 

1.43

Observed

Max 484 Mln 11 Mean 147 

Max 414 Mln 5.7 Mean 96.8

28.3 

0.444 

0.49

15.7 

0.246 

0.28

18.7 

0.293 

0.34

16.1 

0.252 

0.28

Adjusted

Mean 149 Cfsm 2.34 In. 31.86 

Mean 96.1 Cfsm 1.51 In. 20.43

* Discharge measurement made on this- day.

t Diversion above station from Carr Pond for municipal supply of Coventry, Warwick, ani West Warwick, and change in contents in Flat River Reservoir, equivalent in cubic feet per second. Records 

furnished by Kent County Water Authority and Quldnick Reservoir Co.
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 1957.

Gage.--Water-stage recorder. Altitude of gage is 10 ft (from topographic map).

Average discharge . 17 years (1940-57), 391 cfs (adjusted for storage aid diversion).

Extremes . Maximum discharge during year, 1,080 cfs Apr. 9 (gage height, 6.34 ft), from 

rating curve extended above 330 cfs; minimum daily, 48 cfs Sept. 30.

1939-57: Maximum discharge, 2,090 cfs Nov. 6, 1955 (gage height, 9.10 ft), minimum 

daily, 22 cfs Sept. 4, 1944.

Remarks.--Records excellent except those for periods of ice effect or backwater from aquatic vegetation, which are good, and those for periods of no gage-'ieight record, 

which are fair. Plow regulated by powerplants and by Scituate, Plat River, and other 

reservoirs (combined usable capacity, about 5 1/3 billion cubic feet). Diversion above 

station from Scituate Reservoir for municipal supply of Providence, North Providence, 

Cranston, Johnston, Smithfield, and Warwick.

Revisions (water years). WSP 971: 1940-42. WSP 1381: 1940-41 (M).

Rating tables, water1 year 1956-57, except period of ice effect or 

backwater from aquatic vegetation (gage height, in feet, and 

discharge, in cubic feet per second)

Oct. 1 to Jan. 23 Jan. 24 to Sept. 30

.0

.5

5.0

50

95

198

430

702

3.4

3.5 

3.7 

4.0

95

185

4.5 

5.0 

6.0 

6.2

350

540

940

1,020

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

also

a!50

*162

170

180

112

168

272

258

256

225

117

92

78

147

205

200

227

259

112

66

136

252

212

188

186

106

105" 64

157

133

5,115

165

-47.3

Nov.

167

189

115

62

106

160

162

154

*186

109

62

153" 56

158

160

162

102

101

183

208

205

174

228

141

80

404

405

555

306

270

5,215

174

+47.7

Dec.

146

82

211

265

249

258

*257

144

104

281

284

322

317

330

384

288

460

445

418

414

409

228

274

334

339

357

409

448

378

324

b270

9,429

304

+207

Jan.

363

b480

b440

433

313

168

347

343

320

284

313

168

136

*285

a330

a310

a290

a270

119 119-

259

356

619

4§S

399

215

179

361

368

357

322

9,762

315

+141

Feb.

371

336

315

413

384

374

326

340

182

239

360

371

357

354

357

194

149

200

252

252

a250

252

a!75

125

a2OO

*332

396

364

8,220

294

+132

Mar.

364

203

173

287

336

336

326

357

364

298

350

368

346

308

340

239

185

262

329

378

385

413

388

287

252

350

360

*354

343

215

176

9,672

312

+192

Apr.

215

300

436

371

417

932

936

852

996

960

808

708

680

644

660

552

584

596

568

322

315

371

402

340

*329

371

218

164

154

284

15,555

518

+214

May

556" 318

227

149

134

221

245

215

212

218

140

122

197

209

218

200

194

134

104

182

236

185

173

 167

110

90

143

170

155

113

116

5,533

178

+22.9

June

113

90

110

161

149

131

146

107

80

82

*119

125

122

113

90

68

64

80

88

82

78

68

54

50

61

78

80

75

70

56

2,790

93.0

-39.5

Jvly

54

52

62

64

54

58

54

60

74

80

80

78

70

64

60

65

82

80

78

72

66

64

85

*110

95

113

101

64

62

104

111

2,321

74.9

-59.9

Aug.

110

98

85

68

68

95

98

110

101

85

78

72

92

80

70

85

78

64

60

70

88

90

85

78

64

75

128

128

119

119

80

2,721

87.8

-64.1

Sept.

56

50

60

92

104

95

72

58

*72

110

TlO- 113

llO

82

64

68

101

110

107

107

85

68

78

98

*92

85

101

68

50

48

2,514

83.8

-56.3

Adjusted for diversion and change in reservoir contents

Mean 

Cfsm 

In.

118 

0.590 

0.68

222

1.11 

1.24

Calendar year 1956: 

Water year 1956-57:

511 

2.56 

2.95

456 

2.28 

2.63

425 

2.12 

2.21

504 

2.52 

2.91

733 

3.66 

4.09

201 

1.00 

1.16

Observed

Max 1,190 Mln 56 Mean 393 

Max 996 Mln 48 Mean 216

53.5 

0.268 

0.30

15.0 

0.075 

0.09

23.7 

0.118 

0.14

27.5 

0.138 

0.15

Adjusted

Mean 442 Cfsn 2.21 In. 30.09 

Mean 273 Cfsn 1.36 In. 18.55

* Discharge measurement made on this day.

t Diversion above station from Scituate Reservoir for municipal supply of ProvMence, North Providence, Cranston, Johnston, Smithfield, and Warwick, and change in contents In Scituate and Flat 

River Reservoirs, equivalent in cubic feet per second. Records furnished by Providence Water Supply 

Board and Quidnlclc Reservoir Co.

a Ho gage-height record; discharge estimated on basis of normal regulation pattern, weather records, recorded range in stage when available, and records for South Branch Pawtu^et River at 

Washington.

b Stage-discharge relation affected by Ice.

Note.--Backwater from aquatic vegetation Oct. 1 to Jan. 23, Apr. 30 to Sept. 30.
POTOWOMUT RIVER BASIN 131

Potowomut River near East Greenwich, R. I.

Location. Lat Al'SS'SS", long 71 026'45", on right bank 45 upstream from Old Forge Dam 

Iri North Kingstown. Washington County, 1^ miles south of village of East Greenwich, 

Kent County, and Z\ miles upstream from mouth.

Drainage area. 23.0 sq ml.

RecoT'ds available. August 1940 to September 1957.

Gage. Water-stage recorder. Altitude of gage Is 10 ft (from topographic map).

Average discharge. 17 years, 42.2 cfs (unadjusted).

Extremes.--Maximum discharge during year, 305 cfs May 10 (gage height, 2.22 ft), caused 

by failure of dam upstream; minimum, 0.1 cfs July 24-26.

1940-57: 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 locfl resident 

(backwater from hurricane tidal wave).

Remarks. Records good. Diversions above station for supply of East Greenwich, North 

Kingstown, Warwick, and U. S. Naval establishments.

Rating table, water year 1956-57 (gage height, In feet, and discharge, 

In cubic feet per second)

1.05

1.1

1.2

0.7 

3.4

1.4 

1.7 

2.1

49

128

262

Discharge, In cubic feet per second, water year October 1956 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

(t)

Oct.

6.1

5.6

*376

6.1

5.6

5.6

30

39

2?

14

11

9.9

9.3

8.7

8.1

7.1

7.1

6.6

6.1

6.1

6.1

6.1

10

13

12

11

9.9

9.3

11

10

9.3

327.3

10.6

4.94

Nov.

12

22

20

17

14

12

11

9.9

*11

10

9.9

9.9

9.3

8.7

8.1

7.6

877

29

35

24

19

37

35

26

20

40

39" 55

30

26

616.1

20.5

5.48

Dec.

22

20

19

20

18

22

23

22

29

45

37

42

43

*48

108

105

89

66

51

46

46

46

66

68

67

59

49

47

53

55

45

1,476

47.6

5.22

Jan.

42

37

36

36

34

34

36

35

34

37

35

32

32

*30

26.

26

27

28

29

32

34

53

140

-89 146

67

56

50

48

46

44

1,431

46.2

5.18

Feb.

45

46

43

56

62

S3

47

46

49

11

72

54

46

43

42

41

42

40

38

38

35

34

35

36

33

37

68

*65

-

1,324

47.3

5.13

Mar.

55

50

51

47

42

40

40

51

105 ~56

71

60

54

50

47

57

59

51

47

59

72

86

81

71

61

55

51

*48

47

49

51

1,804

58.2

4.70

Apr.

4777

122

89

105

232

181

131

168

146

116

99

96

91

83

78

73

72

73

71

67

63

61

59

*55

61

61

57

55

50

2,735

91.2

5.16

May

46

42

41

40

40

39

38

36

33

70

32

35

34

32

44

40

34

31

31

33

40

34

29

26

24

23

22

21

20

18

Te

1,046

33.7

6.41

June

17

18

22

19

18

*16

17

18

15

13

12

12

12

11

10

9.3

7.6

6.6

*6.6

6.1

5.6

4.8

4.8

4.8

4.8

4.8

4.5

4.5

3.8

3^4

312.0

10.4

7.40

July

3.1

2.7

3.0

3.8

3.1

3.1

2.8

2.8

4.1

3.2

2.3

2.3

3.3

4.1

2.6

2.2

2.8

2.5

2.2

1.9

1.9

1.9

1.5

.8

iT?

15

T3- 42

*10

8.7

7.6

166.5

5.37

6.84

Aug.

6.1

tt

4.5

5.6

4.8

4.5

4.1

3.8

3.4

4.5

5.6

5.2

4.1

4.1

3.8

4.7

5.2

4.8

3.4

2.6

2.7

2.4

2.2

?7e

4.8

6.1

5.2

4.2

3.4

3.1

4.1

131.0

4.23

6.00

Sept.

3.8

srr

2.5

2.0

2.0

1.7

2.2

3.8

*3.1

1.9

1.9

2.4

1.8

2.3

2.8

2.2

1.7

1.5

l.S

1.4

1.8

2.8

2.8

2.2

2.8

2.5

2.5

2.5

2.5

2.2

70.5

2.35

5.52

Calendar year 1956: Max 176 Mln 5.6 Mean 46.7 ' Cfsm - In. -

Water year 1956-57: Max 232 Mln 0.8 Mean 31.3 Cfsm - In. -

Peak discharge (base, 190 cfs). Apr. 6 (9:30 a.m. to 12 m.) 248 cfs (2.065 ft); May 10 (7 a.m.) 

305 cfs (2.22 ft).

Discharge measurement made on this day.
132 PAWCATUCK RIVER BASIN 

Pawcatuck River at Wood River Junction, R. I.

Location. Lat 41°26'42", long 71°40'53", 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 ml.

Records available.--October 1940 to September 1957. October and Novenber 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. 17 years, 182 cfs.

Extremes. Maximum discharge during year, 554 cfs Apr. 9 (gage height, 4.50 ft); minimum, 

17 cfs Oct. 4; minimum dally, 20 cfs Sept. 29.

1940-57: 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. Flow regulated by powerplant and mills above station. 

Revisions (water years) . WSP 1051: Drainage area. WSP 1201: 1948.

Rating table, water year 1956-57 (gage height, In feet, and 

discharge, In cubic feet per second)

1.6 

1.8 

2.1 

2.5

66

139

3.0 

4.0 

S.O

265

461

664

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

66

*57

48

47

31

48

108

144

131

103

103

66

72

69

73

67

62

63

59

52

56

63

78

82

85

77

58

59

72

65

60

2,230

71.9

0.719

0.83

Nov.

65

69

70

74

85

69

68

65

68

65

69

69

80

67

66

62

54

100

131

12O

108

107

120

107

101

126

141

151

141

128

2,746

91.5

0.915

1.02

Dec.

103

101

114

99

101

99

105

97

112

146

139

*149

158

166

210

244

262

260

242

218

200

190

20O

208

218

221

210

20O

193

182

186

5,333

172

1.72

1.98

Jan.

176

158

149

141

139

141

151

139

141

144

137

133

139

141

126

120

118

116

107 112"

122

133

229

268

273

262

242

213

198

188

180

5,036

162

1.62

1.87

Feb.

178

176

173

183

196

ZOO

196

188

188

213

234

223

213

198

186

176

176

173

170

166

161

153

151

151

*151

153

186

206

_

5,118

183

' 1.83

1.90

Mar.

213

210

203

196

183

178

T76" 173

213

244

252

249

234

218

208

218

226

226

218

231

260

283

291

288

*275

260

244

231

221

218

218

7,058

228

2.28

2.62

Apr.

218

239

298

324

364

452

508

532

550

530

506

472

439

407

379

357

337

319

313

303

296

283

27O

260

247

242

239

234

229

216

10,363

345

3.45

3.85

May

206

198

190

183

180

178

170

166

161

158

146

156

158

156

203

216

206

183

170

170

178

173

163

158

144

141

139

135

131

114

122

5,152

166

1.66

1.92

June

112

116

116

105

105

102

101

89

96

105

92

89

88

87

81

69

90

73

72

73

69

57

62

74

60

61

62

59

50

55

2,470

82.3

O.S23

0.92

July

63

48

*45

25

39

41

39

40

41

44

50

45

28

38

41

38

37

36

34

33

32

33

37

36

34

33

33

33

44

34

29

1,183

38.2

0.382

0.44

Aug.

35

23

25

34

55

40

32

26

30

29

28

43

30

31

68

70

44

35

45

*37

38

33

33

24

35

60

50

45

40

37

26

1,181

38.1

0.381

0.44

Sept.

33

33

46

34

33

33

23

34

46

33

37

35

33

31

24

41

32

32

31

30

28

22

39

32

31

29

30

21

20

38

964

32.1

0.321

0.36

Calendar year 1956: Max 56O Mln 37 Mean 205 Cfsm 2.05 In. 27.82

Water year 1956-57: Max 550 Mln 2o Mean 134 Cfsm 1.34 In. 18.15

Discharge measurement made on this day.
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 highway 

bridge at Hope Valley, Washington County, and 6.6 miles upstream from mouth.

Drainage area.--72.4 sq mi.

Records available. August to December 1909 (gage heights only), March 1941 to September 

1957. Records of daily 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 (f:-om topographic map). August to December 1909, staff gage at site 1,000 ft upstream at different datum.

Average discharge. 16 years, 147 cfs.

Extremes. Maximum discharge during year, 713 cfs Apr. 6 (gage height, 5.06 ft); minimum, 

15 cfs Sept. 28-30; minimum daily, 15 cfs Sept. 29, 30.

1941-57: Maximum discharge, 1,470 cfs Sept. 12, 1954 (gage height, 7.45 ft); minimum, 4.4 cfs Oct. 18, 1941; minimum daily, 10 cfs Oct. 13, 1941.

Maximum stage known since 1711, at least 12.4 ft in February 1886.

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

record, which are good. Some regulation at low flow caused by mills and ponds above 

station; regulation greater prior to 1948.

Revisions (water years). WSP 1201: 1948(P). See also Records available.

Hating table, water year 1956-57, except periods of Ice effect (gage 

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

1.6

1.7 

1.9 

2.2

2.5 

3.0 

4.0 

5.0

128

260

468

698

Discharge, in cubic feet per second, water year October 1956 to September 195T

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

3O

31

Total

Mean

Cfsm

In.

Oct.

36

*33

31

30

30

31

90

121

84

64

53

47

46

43

41

41

40

38

39

40

38

36

43

48

46

42

4O

39

36

36

35

1,417

45.7

0.631

0.73

Nov.

40

55

59

52

47

44

42

42

44

44

42

40

*42

47

47

43

43

71

110

90

76

96

119

99

83

168

260

192

162

149

2,448

81.6

1.13

1.26

Dec.

131

119

112

107

101

105

105

101

110

151

149

159

173

184

292

334

315

265

221

205

189

181

200

213

218

203

184

173

b!65

b!60

159

5,484

177

2.44

2.82

Jan.

159

136

131

121

121

116

121

119

116

119

119

112

112

103

94

b90

b88

b84

aS2

a80

a86

103

301

395

308

252

211

192

181

168

157

4,577

148

2.04

2.35

Feb.

154

149

141

157

168

162

151

146

149

213

231

194

178

165

154

146

146

138

133

128

121

116

116

116

*116

119

211

231

-

4,349

155

2.14

2.23

Mar.

E13

197

189

176

159

149

144

154

224

252

216

197

181

170

162

186

205

186

173

205

234

257 252"

231

211

194

184

176

168

165

168

5,978

193

2.67

3.07

Apr.

159

211

317

265

290

588

600

482

496

480

395

343

315

290

268

252

242

237

234

226

221

208

197

192

184

184

184

176

168

157

8,561

285

3.94

4.40

May

146

*138

128

123

123

121

119

114

107

105

101

103

105

105

151

154

123

110

103

103

116

114

105

99

94

86

84

81

75

72

69

3,377

109

1.51

1.73

June

66

66

67

69

64

62

59

57

55

52

51

50

50

44

44

46

43

44

50

43

42

40

38

36

36

36

35

36

35

55

1,449

48.3

0.667

0.74

July

31

31

*29

28

28

28

27

27

26

26

26

25

24

24

25

26

24

33

44

4T

35

37

29

28

27

27

25

20

*19

19

20

859

27.7

0.383

0.44

Aug.

21

20

19

19

19

21

20

18

18

18

18

18

19

19

20

22

22

22

22

20

19

18

18

17

T8

20

28

3225"

24

23

637

?0.5

0.283

0.33

Sept.

23

22

21

20

20

19

19

18

18

18

18

18

18

17

16

16

16

16

16

16

16

16

16

16

16

16

16

16

15

15

523

17.4

0.240

0.27

Calendar year 1956 : Max 523 Min 29 Mean ISO Cfsm 2.21 In. 30. Ol

Water year 1956-57: Max 6OO Min 15 Mean 109 Cfsm 1.51 In. 2O.37

Peak discharge (base, 550 cfs). Apr. 6 (6 to 6:3O p.m.) 713 cfs (5.06 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for Pawcatuck

ver at Wood River Junction.

- 

River at Wood River Junction.

t> Stage-discharge relation affected by Ice.
134 PAWCATUCK RIVER BASIN

Pawcatuck River at Westerly, R. I.

Location.--Lat 41"23'01", long 71°50'01", 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 1957.

Gage.--Water-stage recorder. Altitude of gage is at mean sea level (from topographic map).

Average discharge. 17 years, 546 cfs (adjusted for diversion).

Extremes. Maximum discharge during year, 1,870 cfs Apr. 6, 7; maximum gage height, 

6.73 ft Apr. 9 (affected by tide); minimum daily discharge, 26 cfs July 14.

1940-57: Maximum discharge, 3,510 cfs Mar. 16, 1953 (gage height, 8.83 ft); maximum gage height, 12.16 ft Aug. 31, 1954 (backwater from tide); minimum daily discharge, 

25 cfs Aug. 17, 1941.

Flood in March 1936 reached a discharge of 3,150 cfs, by computation of flow over 

dam 1-J miles upstream from station. Maximum discharge known since 1886 occurred in 

November 1927 and was possibly more than twice that of March 1936. Maximum stage known 

since at least 1635, 15.0 ft Sept..21, 1938 (due to hurricane tidal wave).

Remarks. Records good. Regulation at low flow caused by mills above station. Diversion 

above station for municipal supply of Westerly.

Revisions. WSP 1051: Drainage area.

Discharge, In oiible feet per second, water year October 1956 to September 1957

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

(t)

Oct.

153

*139

136 

128

132

108

300

426

395

340

267

219

207

184

192

174

160 

170

184

150

160

167

181

199

219

211

170

174

188

164

150

6,147

198

2.45

Nov.

164

2C)T

227 

227

207

199

203

167

195

211

188

184

*192

167

184

188

174

350

385

375

555

365

400

395

340

674

850

773

633

542

9,701

323

2.37

Dec.

481

431

420

410

565

590

395

385

410

556

577

*584

626

675

969

1,150

1.190 

1,080

962

850

759

717

752

801

815

801

752

696

675

703

633

21,010

678

2.32

Jan.

598

515

485 

475

464

453

464

458

453

464

460

430

456

415

385

380

370 

340

340

520

345

395

780

1.210

1,130

969

850

752

675

640

605

17,056

550

2.49

Feb.

584

570

549 

598

654

647

619

591

591

731

829

775

705

640

598

570

556 

555

517

505

475

464

442

436

*442

442

605

731

16,397

586

2.51

Mar.

759

738

710 

675

619

570

542

556

745

871

857

794

738

675

626

668

745 

731

675

766

937

1,020

1,010

955

*878

815

745

696

eea

640

640

23,064

744

2.45

Apr.

626

752

1,100 

1,110

1,180

1,730

1.84O

1 770

1,820

1,800

1,670

1,510

1,570

1,250

1,160

1,070

985 

871

857

864

822 '801

752

717

682

668

647

647

626

121

32,272

1,076

2.50

May

542

505

475 

458

448

453

426

420

405

590

375

380

405

400

619

689

612 

511

475

475

511

487

458

458

420

395

395

375

560

525

555

14,002

452

2.77

June

311

288

335 

306

288

284

280

267

255

271

255

247

219

239

223

195

211 

199

195

192

203

164

167

199

181

167

160

160

125

113

6,699

223

5.87

July

156

*153

146 

102

139

102

102

132

142

139

128

128

48

21

56

85

84 

91

83

54

52

94

99

99

89

84

57

82

110

102

91

3,055

98.5

3.89

Aug.

80

90

50 

54

110

89

90

88

85

60

71

105

90

60

195

275

167 

105

119

*112

97

97

91

66

94

139

146

156

142

102

72

3,277

106

3.24

Sept.

79

94

~95 110 

87

85

63

84

105

94

91

91

86

68

82

96

91 

91

87

83

59

57

96

94

84

74

81

55

46

as

2,486

82.9

2.58

Adjusted for diversion

Mean 

Cfsm 

In.

201 

0.681 

0.78

526

1.11 

1.25

Calendar year 1956: 

Water year 1956-57:

680 

2.51 

2.66

555 

1.87 

2.16

588 

1.99 

2.08

746 

2.55 

2.92

Observed

1,078 

3.65 

4.08

454 

1.54 

1.78

Max 1,760 Mln 1O5 Mean 610 

Max 1,840 Mln 26 Mean 425

227 

0.769 

0.86

102 

0.346 

0.40

109 

0.369 

0.43

Adjusted

85.4 

0.289 

0.32

Mean 613 Cfsm 2.O8 In. 28.27 

Mean 428 C"sm 1.45 In. 19.70

* Discharge measurement made on this day.

t Diversion, equivalent In cubic feet per second, for municipal supply of Westerly. Records furnished by Westerly Board of Water Commissioners.
POQUONOCK RIVER BASIN 135

Great Brook at Poquonock Bridge, Conn.

Location. Lat 41°20'57", long 72°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 I 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 mi.

Records available. January 1946 to September 1957.

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 G">oton, 

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 19S9.

Average discharge. 11 years, 26.0 cfs.

Extremes.--1946-57: 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.--Venturl-meter records and gage readings furnished by the borough of Groton, 

Department of Utilities.

Monthly discharge, water year October 1956 to September 1957

Month

Calendar year 1956. ....

Water year 1956-57. ....

Runoff 

(millions of 

gallons)

178.1 

360. 0 

771.2

6,701.0

572.9 

587.4 

734.9 

1,013.1 

383.0 

115.1 

42.2 

68.3 

43.9

4,870.1

Mean

Millions 

of gallons 

per flay

5.75 

12.0 

24.9

18.3

18.5 

21.0 

23.7 

33.8 

12.4 

3.84 

1.36 

2.20 

1.46

13.3

Cubic feet 

per 

second

8.90 

18.6 

38.5

28.3

28.6 

32.5 

36.7 

52.3 

19.2 

5.94 

2.10 

3.40 

2.26

20.6

Discharge per 

square mile

Millions 

of gallons 

per flay

0.402 

.839 

1.74

1.28

1.29 

1.47 

1.66 

2.36 

.867 

.269 

.095 

.154 

.102

.930

Cubic feet 

per 

second

O.622 

1.30 

2.69

1.98

2.00 

2.27 

2.57 

3.65 

1.34 

.416 

.147 

.238 

.158

1.44

Runoff 

In 

Inches

0.72 

1.45 

3.10

26.94

2.31 

2.36 

2.96 

4.07 

1.54 

.46 

.17 

.27 

.18

19.59
THAMES RIVER BASIN

Willimantlc 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 1957.

Gage. Water-stage recorder. Datum of gage is 239.05 ft above mean sea level, datum of 

TT929 (levels by Corps of Engineers).

Average discharge. 26 years, 212 cfs.

Extremes. Maximum discharge during year, 1,420 cfs Jan. 23 (gage height, 7.56 ft); minimum, 13 cfs Sept. 1-3, 9, 27-29; minimum gage height, 3.35 ft Sept. 1, 2; minimum daily, 

13 cfs Sept. 1-3, 9, 27-29.

1931-57; Maximum discharge, 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 cfs and contracted-opening determination of peak flow; minimum, 

2.0 cfs Aug. 21, 22, 1949 (gage height, 1.60 ft); minimum daily, 2.5 cfs Sept. 18, 1949.

Remarks.--Records excellent except those for periods of ice effect and doubtful or no gageheight record, which are good. Flow regulated by mills and reservoirs upstream. Records of chemical analyses and water temperatures for the water year 1957 are given in 

WSP 1520.

Revisions (water years) . WSP 781: 1934(m), drainage area. WSP 851: 1935-36. WSP 1201: 

1932lM,m), 1933-34, 1937, 1939-42.

Rating table, water year 1956-57, except periods of Ice efflect (gage 

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

3.3 

3.5 

3.7

4.0

9.5

24

95

4.5 

5.0 

6.0 

7.0

210

355

690

1,110

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

66

57

57

60

73

70

152

172

115

86

68

60

50

45

49

57

50

53

47

44

35

44

73

84

78

68

60

47

46 

56

49

2,071

66.8

0.552

0.64

Nov.

76

133

115

93

74

68

68

70

71

65

54

56

76

76

71

68

59

151

205

135

107

250

265

165

113

142

152

129

111 

99

3,317

111

0.917

1.02

Dec.

80

73

74

87

87

84

87

82

130

218

158

304

322

295

388

433

445

361

259

220

208

202

349

334

361

325

307

235

232

b210

205

7,155

231

1.91

2.20

Jan.

b!90

b!75

b!60

b!55

b!50

142

148

148

142

b!40

b!35

b!35

b!25

b!20

bllO

b!05

b!05

b95

b95

b90

b85

b!30

b910

*900

494

331

253

b232

b222 

b22O

b!95

6,637

214

1.77

2.04

Feb.

b!92

188

,b!65

218

b220

205

b!80

172

172

409

406

271

212

190

172

152

155

158

155

152

131

129

127

133

145

172

568

*?52

-

6,001

214

1.77

1.84

Calendar year 1956: Max 1,270 Mln 18

Mar.

310

250

235

218

195

180

185

218

376

379

295

268

253

256

271

391 385"

292

253

280

304

367

304

250

222

210

205

198

*190 

202

172

8,114

262

2.17

2.50

Apr.

165

292

490

349

438

*1.080

920

638

780

655

53Z

448

394

361

a334

a289

aZ65

a253

a265

a238

ag28

a218

a205

a!92

a!80

a!85

a!85

a!72

*a!68

a!65

11,084

369

3.05

3.40

May

a!50

a!40

a!30

a!20

a!15

al!5

allS

a 105

alOS

a95

a90

a 105

a!20

a 105

alSO

a!20

*a!05

a 95

a90

a 100

al85

a!40

a!20

allO

a85

a75

a70

a9O

a75 

a70

3.60

3,350

108

0.893

1.03

June

a55

a55

a70

a55

57

60

57

53

46

40

42

40

41

45

44

29

27

*36

36

38

33

32

22

22

31

32

40

42

40 

Z7

1,247

41.6

0.344

0.38

July

24

29

28

24

22

20

18

18

24

28

29

25

27

29

22

24

26

22

21

18

18

18

18

18

19

18

18

18

18 

20

27

688

22.2

0.183

0.21

Aug.

40

23

18

17

18

*16

16

16

16

16

16

15

15

15

15

15

14

14

14

14

16

18

15

15

16

18

18

17

17 

16

15

524

16.9

0.140

0.16

Sept.

13

13

13

14

15

*15

14

14

13

15

15

14

14

14

14

14

15

15

15

15

15

17

18

T6

15

15

13

13

13 

15

434

14.5

O.12O

0.13

Mean 208 Cfsm 1.72 In. 23.39

Water year 1956-57: Max 1,080 Mln 13 Mean 139 Cfsra 1.15 In. 15.55

Peak discharge (base, 1,100 cfs). Jan. 23 (9 p.m.) 1,420 cfs (7.56 ft); Apr. 6 (9 p.m.) 1,180 cfs 

(7.14 ft).

* Discharge measurement made on this day.

a Doubtful or no gage-height record; discharge estimated on basis of recorder- graph, weather records, and records for other stations In Shetucket River basin 

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 

dam at village of Hop River, 2 miles north of Columbia, Tolland County, and 4.2 miles 

upstream from mouth.

Drainage area. --76. 2 sq mi.

Records available. September 1932 to September 1957.

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. 25 years, 129 cfs.

Extremes . --Maximum discharge during year, 1,270 cfs Jan. 23 (gage height, 8.40 ft); minimum, 1.8 cfs Aug. 9, 10 (gage height, 2.98 ft); minimum daily, 2.0 cfs July 26, 

Aug. 13, 19.

1932-57: 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, 

that of Aug. 9, 10, 1957; minimum daily, that of July 26, Aug. 13, 19, 1957; minimum 

gage height, 2.49 ft Aug. 3, 1936.

Remarks . Records excellent except those for periods of ice effect, which are good. Infrequent regulation at low water.

Revisions (water years) .--WSP 781: 1933(M) , drainage area. WSP 1111: 1947(m) . WSP 1301: 

1935--36 (M) .

Rating tables, water year 1956-57, except periods of Ice effect (gage 

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

Oct. 1 to Jan. 22

3.4 13

3.7 30

4.0 66

5.0 285

5.8 485

Jan. 23 to July 6 July 6 to Sept. 30

3.2 

3.5 

3.8 

4.0

5.0 

6.0 

7.6

285

535

980

3.0

3.1

3.2 

3.4

2.0

3.2

5.0

10

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

27

22

17

16

22

21

89

76

58

49

41

38

36

35

34

34

32

32

30

30

29

29

30

31

31

30 

30

29

29 

29

28

1,064

34.3

0.450

0.52

Nov.

39

58

66

56

47

41

39

37

38

37

35

27

24

25

22

21

19

94

*101

66

45

203

13T

77

54

85 

91

64

51 

45

1,738

57.9

0.760

0.85

Dec.

36

34

34

38

37

34

34

34

77

145

95

220

179

194

448

472

42?

265

177

141

131

139

298

280

310

230 

169

151

155

159

137

5,275

170

2.23

2.57

Jan.

125

110

100

95

95

95

95

95

90

90

85

85

80

75

70

65

65

60

60

55

50

70

*810

534

335

205 

175

145

139 

130

115

4,398

142

1.86

2.14

Feb.

120

116

103

139

151

136

118

118

124

422

360

215

167

141

122

109

105

96

94

94

88

75

72

75

78

94 

454

*298

-

4,284

153

2.01

2.09

Mar.

210

183

169

137

115

107

109

132

310

322.

212

183

165

145

133

278

222

169

143

151

190

255

192

159

133

120 

111

103

*9S 

91

^4

5,131

166

2.18

2.51

Apr.

75

213

322

188

320

980 635"

435

660

485

335

272

235

198

169

151

139

130

153

141

130

*113

102

98

89

89

91

86

79 

70

7,183

239

3.14

3.50

Calendar year 1956: Max 785 Mln 7.0 Mean 126

May

63

59

55

53

52

51

47

45

42

38

36

37

40

38

55

40

*40

37

36

42

75

58

51

48

40

35 

33

43

39 

41

36

1,405

45.3

0.594

0.68

June

31

28

28

26

22

20

18

16

15

13

13

12

12

11

11

9.7

9.5

9.2

9.2

11

9.7

9.2

8.6

8.4

8.4

1^6 

9.7

*9.5

8.9

8.6

413.2

13.8

0.181

0.20

Cfsm 1.65

July

8.6

778

6.9

7.3

7.6

6.0

4.5

5.4

*4.8

5.7

4.6

4.3

3.6

3.2

7.0

5.4

3.1

2.1

2.2

2.2

2.1

2.1

2.2

2.2

2.1

f*

2.8

3.4 

4.1

5.0

132.6

4.28

0.056

0.06

Aug.

5.7

5.4

3.1

3.0

3.4

*4.3

2.6

2.6

2.5

2.1

3.2

2.6

2.0

2.2

2.8

3.7

3.6

2.4

2.0

2.1

3.2

5.6

4.3

3.2

4.3

fcf

3.0

2.2 

3.0

3.1

1?8.4

3.50

0.046

0.05

Sept.

2.7

2.4

2.2

2*1

3.1

*2.5

2.2

3.0

3.9

3.4

3.1

3.2

3.1

2.8

5.7

3.9

5.9

4.3

3.9

3.2

3.2

5.0

6.1

5.9

3.9

3.1 

2.5

2.5

2.7 

3 2*

104.7

3.49

0.046

0.05

In. 22.59

Water year 1956-57: Max 980 Mln 2.0 Mean 85.6 Cfsm 1.12 In. 15.22

Peak discharge (base, 900 cfs). Jan. 23 (4 a.m.) 1,270 cfs (8.40 ft)j Apr. 6 (12 ra.) 1,160 cfa 

(8.10 ft).

* Discharge measurement made on this day.

Mote. Stage-discharge relation affected by Ice Dec. 1, 2, Jan. 1-23, 27, 28, 30, 31, Feb. 3,12,21.

505692 O - 59 - 10
138 THAMES RIVER BASIN

Safford Brook near Woodstook Valley, Conn.

Location. Lat 41°55 1 35", long 72°03'37", on right bank on downstream side of town road 

bridge, 0.3 mile downstream from Bradford Brook, 0.3 mile upstream from mouth, 1.2 mile 

southeast of Woodstock Valley, Windham County, and 2 miles southwest of West Woodstock.

Drainage area. 4.08 sq mi.

Records available. June 1950 to September 1957.

Gage. Water-stage recorder. Datum of gage is 552.92 ft above mean sea level, datum of 

1"929.

Average discharge. 7 years, 9.15 cfs.

Extremes. Maximum discharge during year, 235 cfs Jan. 23 (gage height, 4.50 ft); minimum, 

practically no flow Aug. 17; minimum gage height, 1.41 ft Oct. 4, Kov. 15-17.

1950-57: Maximum discharge, 1,000 cfs Aug. 19, 1955 (gage height, 6.68 ft); minimum, 

that of Aug. 17, 1957; minimum gage height, 1.17 ft Sept. 4-12, 1953.

Remarks. Records good except those below 0.1 cfs, which are poor, 

unknown source at extreme low flows.

Slight regulation from

Rating tables, water year 1956-57, except periods of Ice effect (gage 

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

Oct. 1 to Jan. 23 Jan. 23 to Sept. 3O

1.4 0.51

1.5 1.2

1.6 2.2

1.8 5.1

2.0 

2.3 

2.7

1.65 

1.7

2.2

O.O01 

.009 

.095 

.42

1.3

4.8

2.4 

2.6 

3.0 

3.4 

3.8

11

20

47

85

133

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Total

Mean

Cfsm

In.

Oct.

1.4

1.0

.69

.88

1.9

1.3

~4.6 13

2.5

1.8

1.5

1.3

1.2

1.1

1.0

.83

.82

.82

.75

.63

762" .62

1.4

1.6

1.2

.95

.88

.88

.82 

.75

.75

49.60

1.60

0.392

O.45

Nov.

2.2

2.5

2.1

1.7

1.4

1.2

1.1

1.1

1.3

1.2

.95

1.0

l.O

.95

.69

.56

756

9.2

6.2

3.5

2.8

~6.6 16

3.7

2.8

*12

8.1

4.8

4.0 

3.4

104.61

3.49

0.655

0.95

Dec.

2.8

2.5

276

3.2

3.1

3.0

3.1

3.2

6.1

6.2

6.2

25

14

12

14

36

14

b9.5

7.3

6.9

6.8

22

16

19

13

b7.3

6.O

b7.1 

b6.6

b4.9

317.4

10.2

2.50

2.88

Jan.

b4.6

b4.3

b4.1

4.0

3.8

3.4

3.0

2.7

b2.3

2.3

b2.3

2.2

2.1

b2.O

2.0

2.0

1.9

1.8

1.7

1.6

1.5

127'

b5"2~

b29

b!4

b9.0

b7.0

*b7.O 

b6 .8

b6.5

323.6

10.4

2.55

2.94

Feb.

b6.5

b5.9

b5.9

b7.0

b7.9

b7.3

b6.5

6.2

b7.3

b25

b!6

b9.3

b7.O

6.2

b5.4

b5.4

b5.1

b4.8

4.8

*b4.6

b4.4

b4.2

b4.2

4.6

5.4

8.6

44

b!4

-

243.7

8.70

2.13

2.22

Mar.

9.6

b8.6

b7.6

b6. 8

b5.9

b5.6

576

7.6

27

T8

11

9.0

8.3

7.6

7.0

18

11

8.3

7.0

7.3

10

15

13

9.6

7.6

*6.8

6.5

6.2

5.9 

6.2

289.8

9.35

2.29

2.64

Apr.

5.4

25

18

1O

33

85

31

21

*41

24

14

11

10

8.6

7.3

6.8

6.2

5.6

5.4

5.1

4.8

4.4

4.2

4.O

3.8

*4.4

4.4

4.0

3.8

'

414.6

13. S

3.36

3.77

May

3.2

2.8

2.6

2.6

2.5

2.5

2.2

1.6

1.4

1.3

1.6

2.0

2.O

1.6

2.4

 1.8

1.2

1.1

1.1

2.2

3.6

271

1.8

1.3

.95

.74

1.1

1.8

1.1 

.74

.55

55.96

1.80

0.441

0.51

June

0.47

.67

.95

.67

.47

.42

.42

.37

.33

.25

.22

.22

.19

.16

.14

.12

.06

*.O55

Togs

.14

.10

.065

.055

.25

.53

.74

5.4

1.4

.74 

.55

14.220

0.474

0.116

O.13

July

0.42 72*9-

*!l9

.14

*.O95

.08

.055

.045

*.055

.065

.045

.055

.055

.055

,015

.015

.012

.009

.OO6

.004

.004

.009

.015

.012

.012

.009

.009

.009

.009

*.OO9

1,752

O.O565

0.014

0.02

Aug.

0'.OO9

.009

.004

.OO6

.009

.006

.OO4

.005

.OO2

.004

.OO4

.OO5

.002

.OO1 TOOT

.001

.001

.001

.001

.001

.001

.002

.002

.001

.006

.02

T6T5

.009

.009 

.012

.012

0.161

0.0052

0.0013

O.O01

Sept.

O.OO9

.OO9

.009

.015

.015

.015

.015

.012

*.006

.004

.006

.006

.004

.OO6

.006

.006

.012

.012

.012

.009

.015

.025

.035

.055

.035

.02

.02

.02

.02 

.02

0.433

O.O144

.0035

O.O04

Calendar year 1956 : Max 86 Min O.O2 Mean 7.72 Cfsm 1.89 In. 25.71

Water year 1956-57 : Max 127 Min O.OO1 Mean 4.97 Cfsm 1.22 In. 16.52

Peak discharge (base, 12O cfs). Jan. 23 (7 a.m.) 235 cfs (4.5O ft)j Apr. 5 4 a.m.) 120 cfs

(3.7O ft) .

* Discharge measurement made on this day. 

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 from Knowlton 

Brook , 700 ft upstream from bridge on State Highway 89, l£ miles south of Warrenville, 

Windham County, and 3£ miles southwest of Ashford.

Drainage area. 29.1 sq mi.

Records available. July 1940 to September 1957. 

age. Water-stage recorder. Datum of gage is 335.57 ft above mean sea level, datum of

Average discharge. 17 years, 49.5 efs.

Extremes. Maximum discharge during year, about 550 cfs Jan. 23; maximum gage height, 

6.25 ft Jan. 23 (ice jam); minimum discharge, 0.15 cfs Aug. 25 (gage height, 1.15 ft). 

1940-57: Maximum discharge, 5,590 cfs Aug. 19, 1955 (gage height, 10.41 ft), from 

rating curve extended above 890 cfs on basis of contracted-opening determination of 

peak flow; minimum, that of Aug. 25, 1957; minimum gage height, 0.99 ft Aug. 26-29, 

1949.

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

sional regulation from ponds upstream.

Revisions (water years). WSP 1331: 1941(M), 1951-53(M).

OccaRatlng tables, water year 1956-57, except periods of Ice effect (gage 

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

Oct. 1 to July 31 Aug. 1 to Sept. 30

1.2

1.3 

1.5 

1.7 

2.0

0.5

.6

1.8

6.1

14.5

34

3.0 

3.5 

4.0 

4.6

150

225

275

355

1.2

1.3

1.4

.4 

1.5 

3.3

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

12

9.3

8.3

9.8

19

12

81

44

24

16

13

12

11

11

11

9.3

9.0

8.6

8.3

lil

7.9

8.3

11

13

11

9.3

9.0

9.0

8.6

8 . * o

8.3

440.2

14.2

0.487

0.56

Nov.

22

24

21

16

19

21

19

20

21 

19

18

19

17

13

11

11

12

55

42

26

20

84

48

b2S

b21

*40

38

28

23

b!9

775

25.8

0.887

0.99

Dec.

b!6

b!4

16

19

18

18

19

18

42 

49

b36

92

72

73

102

177

142

87

b65

53

53

57

135

102

106

74

b60

56

b55

b52

bSO

1,928

62.2

2.14

2.47

Jan.

b45

b42

b40

38

38

34

36

36

35 

b35

b34

b32

b30

b28

b26

b25

b25

b24

b24

b25

b30

b50

b300

b!20

*b80

b65

bSO

b46

b44

b42

b40

1,519

49.0

1.68

1.94

Feb.

b39

b38

b38

b47

bSO

b43

b40

b38

b36 

b!05

b80

b57

b48

b42

b40

b40

b40

b36

38

*b36

b34

b32

b31

34

36

46

230

103

-

1,477

52.8

1.81

1.88

Calendar year 1956: Max 352 Mln 2.0

Mar.

70

65

61

b54

b49

b46

46

53

109 

103

73

65

60

57

53

109

78

58

52

55

70

85

66

56

48

*46

45

41

40

42

43

1,898

61.2

2.10

2.42

Apr.

37

118

116

73

147

348

206

158

*250 

160

112

88

79

70

65

61

55

53

54

49

46

41

39

38

36

*40

39

36

33

29

2,676

89.2

3.07

3.42

May

26

25

24

25

28

24

20

18

17

16

16

19

20

17

27

20

*15

14

15

21

31

21

18

16

13

11

15

23

14

11

9.3

589.3

19.0

0.653

0.75

June

8.6

8.6

11

9.7

7.9

7.2

6.5

6.1

6.1 

5.6

4.6

4.4

4.1

3.6

3.4

3.1

2.9

2.7

2.7

3.1

2.7

2.2

2.0

1.8

3.2

3.1

7.2

4.6

4.1

3*8

149.6

4.99

0.171

0.19

Mean 49.8 Cfsm 1.71

July

4.8

2.9

2.2

1.8

*1.6

1.5

1.3

1.3

*1.5 

1.6

1.5

1.2

1.0

1.5

1.6

1.3

1.1

.9

.7

.6

.5

.5

.8

.8

.8

.7

.7

.8

1.0

1.5

2.0

42.0

1.35

0.046

0.05

Aug.

1.7

*1.0

.S

1.0

1.2

.8

.65

.4

.35

.3

.4

.4

.4

.5

.4

.35

.3

2.0

1.5

.4

-2

735

.3

.2

.5

1.5

2.4

iTT

.9

.8

24.50

0.790

0.027

0.03

Sept.

0.75

.7

.7

.8

1.0

3.1

T7T

1.7

*.55 

.75

.75

.65

.4

.55

.55

.65

1.2

1.5

1.5

1.2

1.0

2.0

2.8

2.9

2.6

2.4

2.4

2.2

2.2

2.2

44.80

1.49

0.051

0.06

In. 23.30

Water year 1956-57: Max 348 Min 0.2 Mean 31.7 Cfsm 1.09 In. 14.76

Peak discharge (base, 400 cfs).--Jan. 23 (11 a.m.) about 550 cfsj Apr. 6 (5:30 a.m.) 410 cfs 

(4.89 ft).

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
140 THAMES RIVER BASIN 

Mansfield Hollow Reservoir at Mansfield Hollow, Conr.

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 1957.

Gage.--Water-stage recorder. Datum of gage is at mean sea level, daturr of 1929 (levels by 

(Torps of Engineers ).

Remarks . Reservoir completed in March 1952 for flood control, has usalle capacity of

 2,260,000,000 cu ft.

Cooperation.--Records furnished by Corps of Engineers.

Month-end elevation and contents, water year October 1956 to September 1957

Pate

Dec . 31 ............................................

Calendar year 1956 ...............................

Sept . 30 ............................................

Water year 1956-57. ..............................

Elevation 

(feet)t

200. 4

_

200.7

203.1

200.5

199.5

198.1

-

Contents 

(millions of 

cubic feet)

1.5

.

1.9

11.5

1.6

1.0

.4

0

0

-

Change in contents 

(millions of 

cubic feet)

_

+ .8

+ .9

+ .4

+9.6

-9.9

-.6

-.6

0

-.5

t Elevation at 12 p.m.
THAMES RIVER BASIN 141 

Natchaug River at Wllllnantic, Conn.

Location. Lat 41°43'14", long 72°11'52", 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 Willlmantic, 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 1957.

gage.--Water-stage recorder. Datum of gage is 150.31 ft above mean sea level, datum of 

]T929 (levels by Corps of Engineers).

Average discharge. 27 years, 302 cfs (adjusted for storage).

Extremes.--Maximum discharge during year, 1,440 cfs Apr. 7 (gage height, 5.77 ft); minl-

 mum, 3.5 cfs July 24, 25, 26, 27, Aug. 3, 4 (gage height, 2.00 ft); minimum daily, 

4.0 cfs July 22, 26-28, Aug. 4, 20.

1930-57: 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; minimum, about 

0.3 cfs Aug. 6, 1937; minimum daily, 2.3 cfs Sept. 11, 12, 1943.

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

of Willimantic diverts an average of about 1,000,000 gal of water a day for municipal 

supply from reservoir 2 miles upstream. Operation 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 table, water year 1956-57, except periods of ice effect 

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

2.0

2.1

2.2 

2.4

3.5

9.5

18.5

45

2.6 

3.0 

5.0 

5.7

84

197

1,070

1,420

Discharge, in cubic feet per second, water year October 1956 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

(t)

Oct.

91

74

66

70

73

70

254

185" 351

123

102

88

79

65

77

72

72

69

68

70

38

67

71

63

71

69

50

68

44

36

72

2,768

89.3

0

Nov.

*78

130

141

121

104

101

106

106

109

109

100

92

77

91

74

71

68

124

275

184

148

317

365

218

150

202

268

200

158

137

4,424

147

-0.1

Dec.

110

no" 101

113

114

108

106

108

153

290

215

380

466

470

655

678

858

678

444

362

322

326

514

592

588

520

394

350

346

b302

11,035

356

40.3

Jan.

b282

b232

b208

208

222

197

191

191

b!87

187

b!75

b!71

181

b!56

b!35

141

b!35

b!35

b!35

b!45

156

198

*583

150

55

477

925

1,220

1,170

b534

b259

9,341

301

40.2

Feb.

b274

b266

b211

298

b302

290

b243

251

240

542

722

448

342

302

259

232

236

222

225

214

184

181

104

194

204

240

684

*632

-

8,632

308

+4.0

Mar.

583

430

402

342

290

270

282

290

475

678

529

426

382

362

342

475

565

434

362

362

390

524

484

406

346

310

290

270

*255

?4.3 flf

12,054

389

-3.7

Apr.

236

334

722

556

534

*1,220

1,420

1,170

1,170

1,140

902

700

578

506

448

402

366

342

338

322

298

*270

247

236 225'

225

236

214

197

181

15,735

524

-0.2

May

165

152

145

141

142

144

132

124

112

106

102

101

122

116

140

141

112

97

94

109

170

154

125

*116

102

87

78

110

106

84

11

3,704

119

-0.2

June

66

67

62

64

63

66

36

66

26

33

54

24

35

30

31

2T~6.0

27

7.3

38

18

20

26

18

23

17

IS

29

36

26

1,059.3

35.3

0

July

25

19

28

15

24

13

9.1

4.5

*11

9.3

13

12

11

14

15

13

8.2

16

5.5

18

11

4.0

14

6.0

12

4.0

4.0

4.0

4.5

13

5.0

365.1

11.8

-0.1

A'Og.

5.0

26

4.5

29 4.0

9.5

8.0

5.5

5.5

6.0

6.0

6.0

17

5.0

5.0

5.0

5.0

5.0

4.5

4.0

5.0

-5.5 36

20

7.3

18

10

27

5.5

5.0

13

317.8

10.3

0

Sept.

21

5.0

*4.5

4.5

7.6

5.5

18

17

13

18

14

16

37

5.0

16

19

21

26

18

17

5.0

48

7.3

5.5

21

9.5

9.5

10

10

11

439.9

14.7

0

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

89.3 

0.528 

0.61

147 

0.870 

0.97

Calendar year 1956: 

Water year 1956-57:

356 

2.11 

2.43

301 

1.78 

2.05

312 

1.85 

1.93

385 

2.28 

2.63

524 

3.10 

3.46

119 

0.704 

0.81

Observed

Max 1,470 Min 6.0 Mean 294 

Max 1,420 Mln 4.0 Mean 191

35.2 

0.209 

0.23

11.7 

0.069 

0.08

10.3 

C.061 

0.07

14.7 

0.087 

0.10

Adjusted

Mean 294 Cfsm 1.74 In. 23.67 

Mean 191 Cfsm 1.13 In. 15.37

* 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.

b Stage-discharge relation affected by ice.
142 THAMES RIVER BASIN

Shetucket River near Willimantio, Conn.

"at

Ga,

Location. La t 41°42'0l", long 72°10'57", on right bank at downstream side of Bingham

 Bridge, 500 ft upstream from Hew York, New Haven & Hartford Railroad bridge, 500 ft 

downstream from Potash Brook, 1.3 miles downstream from confluence of Willimantic and 

Natchaug Rivers, l| miles southeast of Willimantic, Windham County, and 16.5 miles 

above mouth.

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 'a 

South Windham"), October 1933 to September 1957.

>

. Water-stage recorder. Datum of gage is 131.40 ft above mean sea level, datum of 

929 (levels by Corps of Engineers). Apr. 4, 1904, to Dec. 31, 1905, chain gage at 

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 li miles downstream at different datum. 

Average discharge. 32 years (l905, 1919-21, 1928-57), 704 cfs (adjusted for storage). 

Extremes. Maximum discharge during year, 4,030 cfs Apr. 6 (gage height, 7.58 ft); mini-

 mum, 27 cfs Aug. 21 (gage height, 1.37 ft); minimum daily, 31 cfs A)g. 18.

1904-5, 1919-21, 1928-57: Maximum discharge, 52,200 cfs Sept. 21, 1938 (gage 

height, 27.6 ft, from floodraarks), 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 Aug. 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. Plow regulated by mills on Willimantic River and on Natchaug

 River by pumping for municipal supply of city of Willimantic and by Mansfield Hollow 

Reservoir (see p. 140). Records of chemical analyses and water temperatures for the 

water year 1957 are given in WSP 1520.

Revisions (water years). WSP 781: 1934(m). WSP 801: 1935. WSP 1201: 1905(M), 1920-21, 

1931-32 , 1934-35(M), 193?(M).

Rating table, water year 1956-57, except period of Ice effect (gage 

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

1.4 

1.7 

2.0 

2.5

73

135

275

990

2,410

3,590

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

(t)

Oct.

196

177

159

156

177

169

535

685 40"5

286

231

205

185

162

177

175

167

167

157

154

115

142

172

185

182

177

157

147

133

133

145

6,413

207

0

Nov.

199

326

338

286

249

231

225

225

231

228

202

193

180

207

180

177

167

34?

665

440

330

758

865

B47J

358

485

615

470

374

326

10,419

347

-0.1

Dec.

265

240 25"8"

272

272

265

256

259

363

740

545

897

1,040

965

1,610

1,610

1.870

1,360

990

815

765

765

1,170

1,240

1,270

1,150

915

815

815

790

700

25,285

816

+0.3

Jan.

680

600

550

500

535

510

480

470

455

470

420

410

430

400

342

338

330

320

315 335"

326

463

*2,180

2,620

1,040

1,090

1,400

1,640

1,580

965

700

22,274

719

-0.1

Feb.

705

665

580

740

790

740

650

650

615

1,400

1,580

1,040

640

740

660

590

595

565

565

545

465

460 465"

470

505

585

1,630

»1,750

_

21,585

771

44.0

Mar.

1,210

965

915

815

715

675

685

735

1,160

1,540

1,150

990

915

*865

840

1,150

1,270

1,020

865

890

965

1,210

1,090

915

815

740

710

675

640

630

615

28,375

915

-3.7

Apr.

570

748

1,680

1,240

1,220

3,390

5.590

2,500

2,770

2,590

1,950

1,540

1,300

1,150

1,040

965

890

840

865

815

765

*720

660

630

595

605

615

565

540

490

37,838

1,261

-0.2

May

445

410

382

366

362

363

347

317

300

281

269

286

330

301

373

387

305

266

£56

£94

480

440

350

»325

263

227

214

278

245

221

192

9,875

319

-0.2

June

175

172

176

lg_3

T75

170

142

154

113

107

129

99

105

106

105

64

76

*83

68

108

74

78

73

62

73

69

79

96

102

79

3,290

110

0

July

76

S5

75

60

68

53

45

3542"

48

57

50

51

62

54

49

49

50

38

49

42

35

44

35

43

35

37

35

38

47

46

1,508

48.6

-0.1

Aug.

66

72

43

38

64

*41

42

36

36

37

37

37

47

32

34

35

32

31

3?

32

39

82

4U

51

46

59

50

66

40

38

44

1,379

44.5

0

Sept.

55

34

54

34

36

34

46

46

*43

48

45

47

68

34

43

50

56

58

49

48

34

9145"

40

51

37

37

36

35

36

1,350

45.0

0

Adjusted for change in contents in Mansfield Hollow Reservoir

Mean 

Cfsm 

In.

207 

0.516 

0.59

347 

0.865 

0.96

816 

2.03 

2.34

719 

1.79 

2.06

775 

1.93 

2.01

911 

2.27 

2.62

1,261 

3.14 

3.50

319 

0.796 

0.92

Observed

Calendar year 1956: 

Water year 1956-57:

Hax 3,530 Mln 57 Mean 698 

Hax 3,590 Mln 31 Mean 465

110 

0.274 

0.31

48.5 

0.121 

0.14

Aljuste

44.5

0.111 

0.13

45.0 

0.112 

0.12

3

Mean 698 C'am 1.74 In. 23.62 

Mean 465 C'am 1.16 In. 15.70

* 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. Stage-discharge relation affected by ice Jan. 17-20.
THAMES RIVER BASIN 143

Little River near Hanover, Conn.

Location. Lat 41°40'18", long 72°03'10", In Wlndham County, on left bank 800 ft upstream 

from bridge on town road, 0.7 mile downstream from Peck Brook, 2.3 miles northeast of 

Hanover, New London County, and 6.5 miles upstream from mouth.

Drainage area. 29.8 sq mi.

Records available. July 1951 to September 1957.

Gage. Water-stage recorder. Datum of gage is 221.19 ft above mean sea level, datum of

Average discharge. 6 years, 64.4 cfs.

Extremes. Maximum discharge during year, 545 cfs Apr. 6 {gage height, 4.10 ft): minimum.

 3TS~cfs Aug. 9 (gage height, 1.03 ft).

1951-57: 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 Aug. 9, 

1957; minimum gage height, 1.03 ft Sept. 10, 11, 1953, Aug. 9, Sept. 10, 1957.

Remarks . Records good.

Hating tables, water year 1956-57, except periods of lee effect (gage

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

(Backwater from unknown cause Apr. 26 to Aug. 15)

Oct. 1 to Jan. 23 Jan. 24 to Sept. 3O

1.2 

1.4 

1.7 

2.0

8.5

17

38

2.5 

3.0 

3.4

156

255

355

1.0 

1.2 

1.5 

2.0

2.5 

3.0 

3.9

156

255

485

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

13

12

12

17

16

52

43

26

21

17

16

15

14

13

13

12

12

12

12

12

12 

12

15

14

13

12

12

12

11

IT

498

16.1

0.540

O.62

Nov.

16

22

18

16

15

13

12

12

12

12

12

11

T2

12

12

11

11

49

45

29

23

70 

5T

32

b24

54

57

37

29

26

755

25.2

O.846

0.94

Dec.

b21

b!920"

21

21

21

20

20

28

49

37

88

76

88

180

162

150

97

b73

62

56

57 

96

88

91

69

54

50

52

b54

b54

1,974

63.7

2.14

2.47

Jan.

b44

b4O

b36

32

32

b30

29

b30

b3O

b29

b29

b29

b29

b26

b25

b24

b23

b22

bl?

b22

b22

b42 

336

b220~

bl!7

b77

b67

b54

*52

b5O

b51

1,671

53.9

1.81

2.09

Feb.

b44

45

b46

56

63

54

49

46

53

142

122

b77

b62

52

49

46

45

43

42

41

38

b34 

56

37

38

44

161

*T59"

-

1,674

59.8

2.14

2.23

Mar.

80

75

71

62

53

50

52

58

134

142

91

75

66

61

56

87

87

70

62

66

84

112 

90

75

63

57

54

51

48

47

17

2,226

71.8

2.41

2.78

Apr.

*43

92

135

86

142

476

555

164

268

187

133

106

94

84

76

70

65

63

65

63

60

*56 

51

51

48

50

48

43

41

38^

3,144

105

3.52

3.93

May

35

33

32

32

30

30

29

27

26

24

23

24

26

24

33

29

24

23

23

25

38

2? 

26

 29

25

22

21

26

24

21

19_

832

26.8

O.899

1.04

June

20

21

21

18

21

21

18

17

16

15

14

13

12

12

11

10

1O

9.3

9.0

9.3

9.O

8.4 

8.0

8.0

U.

7.7

8.0

8.7

8.0

7.7

378.8

12.6

0.423

0.47

July

*7.7

775

6.7

6.4

6.4

6.4

6.2

6.2

5.9

6.2

6.2

5.7

5.7

6.7

7.0

6.2

5.9

5.7

5.4

5.1

5.1

til

5.1

4.9

4.9

4.9

5.1

5.1

5.7

5.7

181.2

5.85

0.196

0.23

Aug.

5.7

5.1

4.9

4.6

*E.l

4.9

4.4

4.4

4.1

374

E.I

E.I

4.6

4.4

£.7

14

1C

7.7

6.7

e.2

5.7

6.2 

E.9

5.9

5.9

14

14

11

1C

10

1C

218.7

7.05

0.237

0.27

Sept.

9.7

975

9.0

8.7

7.7

6.2

5.4

5.4

5.4

*§ii

5.1

5.4

5.7

5.4

5.1

5.1

5.9

5.9

5.7

5.4

5.4

7.4 

9,3

7.7

6.4

6.2

5.7

5.7

5.4

5.7

191.5

6.38

0.214

0.24

Calendar year 1956: Max 280 Mln 6.7 Mean 55.3 Cfsm 1.86 In. 25.16

Water year 1956-57 : Max 476 Mln 4.1 Mean 37.7 Cfsm 1.27 In. 17.31

Peak discharge (base, 400 cfs).--Jan. 23 (5 p.m.) 5OO cfs (3.95 ft); Apr. 6 (ll:3O a.m.) 545 cfs 

(4.10 ft).___________________________

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
THAMES RIVER BASIN

Quinebaug River at Westville, Mass.

Location. Lat 42°04'23", long 72°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 

Comity, and if- miles west of Southbridge.

Drainage area. 93.8 sq mi.

Records available. July 1939 to September 1957.

Gage. Water-stage recorder. Datum of gage Is 537.66 ft above mean sea level, unadjusted 

(levels by Corps of Engineers).

Average discharge.--18 years, 163 cfs.

Extremes. Maximum discharge during year, 668 cfs Apr. 7 (gage height, 5.08 ft); minimum 

daily, 4.2 cfs Sept. 14, 15.

1939-57: 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 or no gage height record, which are fair. Medium and low flows regulated by mills and reservoirs above 

station.

Rating table, water year 1956-57, except periods of Ice effect (gage 

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

1.75

1.8

2.0

2.2

2.5

4.2 

5.4

51

5.0

5.1

123

220

340

640

675

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

41

35

30

27

31

35

64

82

69

51

42

37

33

35

44

46

44

35

32

27

27

26

29

35

34

30

28

27

*26

26

23.

1,151

37.1

0.396

0.46

Nov.

34

58

58

51

43

38

36

36

38

38

33

35

43

44

40

38

37

64

92

88

76

131

137" 156

104

102

112

102

90

86

2,040

68.0

0.725

0.81

Dec.

74

68

67

67

68

65

70

84

107

*125

118

189

218

220

207

214

256

258 222"

191

175

175

173

166

185

185

173

160

150

130 

140

4,700

152

1.62

1.86

Jan.

125

115

108

105

105

100

102

102

101

102

100

100

100

85

92

90

86

82

79

76.

82

115

470

620

575

458

359

285

251

230

214

5,614

181

1.93

2.23

Feb.

187

179

160

173

183

179

168

154

154

200

242

233

203

177

156

137

187

128

109

*104

98

100

100

106

112

149

327

348

_

4,753

170

1.81

1.88

Mar.

322

282

242

210

181

166

160

162

227

279

265

254

254

254

254

306

330

*309

282

265

270

299

296

284

282

235

222

210

195

197 

207

7,701

248

2.64

3.05

Apr.

203

263

351

351

364

563

661

608

596

578

539

479

416

373

335

312

277

254

240

229

224

224

218

201

181

179

155

175

*188

154

9,871

329

3.51

3.91

May

137

132

123

117

115

112

106

100

88

80

102

121

125

117

125

123

106

95

90

95

140

118

112

101

60

77

*73

70

65

60 

55

3,140

101

1.08

1.24

June

51

54

57

52

48

43

45

40

35

31

29

28

27

26

26

25

28

32

27

25

23

22

22

25

*30

30

30

25

19

21

976

32.5

0.346

0.39

July

19

18

17

18

18

17

19

21

20

20

19

15

13

15

15

14

12

8.4

6.9

5.7

5JL

9.1

29

23

*18

12

13

16

14

13 

12

475.2

15.3

0.163

0.19

Aug.

9.2

8.1

7.8

8.4

8.4

7.8

7.8

7.8

8.8

8.4

9.2

11

11

9.5

8.8

8.1

7.5

7.2

6.0

676

6.6

10

7.8

7.2

10

12

13

11

10

11 

9 9

275.9

8.90

0.095

0.11

Sept.

9.2

9.2

9.5

9.5

9.2

8.8

8.8

8.8

8.1

7.5

8.1

*6.9

4.6

4.2

4.2

4.4

5.4

14

10

7.5

7.2

7.8

9.2

7.2

6.3

7.2

6.0

*5.1

4.9

5.4

224.2

7.47

0.080

0.09

Calendar year 1956 : Max 1,200 Min 11 Mean 164 Cfsm 1.75 In. 23.80

Water year 1956-57 : Max 661 Min 4.2 Mean 112 Cfsm 1.19 In. 16.22

* Discharge measurement made on this day.

Note. No gage-height record Jan. 14-20, May 28 to June 24; discharge estimated on basis of 

weather records, recorded range in stage, and records for Quinebaug River at Quinebaug, Conn., and 

Quaboag River at West Brlmfield, Mass. Stage-discharge relation affected by ice Dec. 29 to Jan. 6, 

Jan. 11, 12, 14-25, 28, 30, Feb. 3, 10. Discharge in cubic feet per second per square mile and 

runoff in inches may not represent 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 bridge on State Highway 197, 0.25 mile downstream from 

Massachusetts-Connecticut State line, 7.8 miles upstream from French River, an! at 

mile 46.

Drainage area. 157 sq mi.

Records available . September 1931 to September 1957.

Gage. Water-stage recorder. Datum of gage is 341.52 ft above mean sea level, datum of 

~1929.

Average discharge. 26 years, 277 cfs.

Extremes . Maximum discharge during year, 1,410 cfs Jan. 23 (gage height, 4.85 ft); minimum, about 1 cfs Oct. 29; minimum daily, 5 cfs July 21.

1931-57: Maximum discharge, 49,300 cfs Aug. 19, 1955 (gage height, 18.96 f 1:, from 

floodmarks), 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, Oct. 29, 1956; minimum daily, about 1 cfs Sept. 4, 

1956; minimum gage height, 1.74 ft Aug. 20, 1940.

Remarks. Records good except those for periods of backwater from ice or aquatic vegetatlon, which are fair. Plow regulated by mills upstream.

Revisions (water years). WSP 851: 1936(M). WSP 1201: 1939-43, 1947, 1949. WSP 1381: 

1938(M).

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6 

7

8

9

10

LI

12

L3

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

56

54

*26

36

40

40 

109

"92- 114

72

56

47

40

38

45

49

49

43

40

34

31

38

27

41

*43

40

36

24

23

27

27

1,437

46.4

0.296

0.34

Nov.

41

60

60

58

67

47 

*43

32

29

45

36

40

45

54

47

45

43

103

123

117

100

201

213

182

141

171

*178

157

135

123

2,731

91.0

0.580

0.65

Dec.

106

92

92

92

87

87 

90

109

147

182

168

325

355

350

330

355

414 458-

335

296

270

265

320

301

350

330

296

270

b261

b217

b!85

7,485

241

1.54

1.78

Jan.

b221

b201

b!97

178

171

b!50 

160

157

154

b!54

b!35

b!47

150

13130

13135

b!25

b!20

b!20

b!20

b!15

b!40

b200

1,120

bl , 000

b825

672

b540

b438

384

b340

*b315

9,014

291

1.85

2.13

Feb.

288

274

b249

270

278

265 

253

233

237

378

390

350

296

261

233

197

245

197

174

160

147

14T

150

157

*171

225

678 6"56

-

7,509

268

1.71

1.78

Mar.

516

450

390

325

283

257 

249

257

456

504

444

414

402

396

396

540

528

480

420

408

420

480

468

432

408

*355

310

306

288

301

315

12,198

393

2.50

2.88

Apr.

306

450

582

540

648

1,210 

1,180

l.OOO

*1,070

965

860

755

660

588

522

468

420

378

355

335

325

310

*301

283

257

253

237

233

229

217

15,937

531

3.38

3.77

May

168

171

160

150

135

144 

129

123

109

100

138

160

171

150

174

*157

135

117

112

129

168

164

144

129

84

92

87

100

106

74

70

4,050

131

0.834

0.96

June

67

67

*70

72

67

67 

80

5?

63

40

45

43

43

38

38

36

38

*47

40

36

36

27

24

24

27

43

47

38

32

29

1,378

45.9

0.292

0.33

July

32

24

23

20

*22

20 

13

23

24

26

22

32

19

13

17

17

13

12

9

8

5

10

20

27

10

18

14

13

15

15

*15

551

17.8

0.113

0.13

Aug.

14

12

10

8

1Z

12 

10

10

10

11

17

19

17

15

14

14

12

10

11

11

11

12

10

10

11

20

18

15

14

15

14

399

12.9

O.OS2

0.09

Sept.

12

15

2314"

12

12 

11

10 ni11

1211

12

12

10

12

15

12

11

11

13

12

17

14

12

12

11

8

8

10

366

12.2

0.078

0.09

Calendar year 1956: Max 2,220 Min 1 Mean 254 Cfsm 1.62 In. 22.05

Water year 1956-57: Max 1,210 Min 5 Mean 173 Cfsm l.lo In. 14.93

Peak discharge (base, 1,000 cfs). Jan. 23 (2:30 p.m.) 1,410 cfs (4.85 ft); Apr. 6 (6 p.m.) 1,330 cfs 

(4-77 ft).

 Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. Backwater from aquatic vegetation Oct. 1 tc Dec. 11, June 6 to Sept. 3O.
146 THAMES RIVER BASIN 

Little River at Buffumvllle, Mass

Location. La t 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 eart of Buf f unrvil le , 

Worcester County, and 1.5 miles west of Oxford.

Drainage area. 27.7 sq mi.

Records available. July 1939 to September 1957.

Gage . Water-stage recorder. Datum of gage is 457.00 ft above mean sea level, unadjusted 

("levels by Corps of Engineers).

Average discharge. 18 years, 47.3 cfs.

Extremes. Maximum discharge during year, 280 cfs Jan. 24 (gage height, 4.39 ft); minimum, 

0.1 cfs Sept. 25, 26; minimum daily, 0.1 cfs Sept. 25. _^

1939-57: Maximum discharge, 8,340 cfs Aug. 19, 1955 Tgage height, 15.53 ft), from 

rating curve extended above 1,200 cfs on basis of computation of peak flow over dam; 

minimum, that of Sept. 25, 26, 1957; minimum daily, that of Sept. 25, 1957.

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

Plow regulated by reservoirs and mill above station.

Revisions (water years). WSP 1201: 1940, 1948.

Rating table, water year 1956-57 (gage height, In feet, and discharge, 

In cubic feet per second)

1.85

1.9

1.95

2.0

2.1

2.2 

2.4

1.7 

3.0 

6.2

2.6 

2.8 

3.0 

3.2 

3.5 

4.0 

4.5

11

21

37

61

108

197

304

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1 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

Cfsm

In.

Oct.

39

18

37

18

17

34

15

39

27

23

39

15

30

14

28

12

4^6

a9.0

a28

a 12

a5.0

alO

a26

all

a5.0

aS.O

a9.0

a 10

a 10

*9.5

7.2

569.3

18.4

0.664

0.76

Nov.

9.1

9.1

10

6.8

16

4.2

6.4

6.7

8.4

6.4

5.3

20

7.1 !*!

3.2

3.2

4.4

4.3

10

15

26

45

27

21

23

37

32

12

19

404.4

13.5

0.487

0.54

Dec.

36

3.8

5.7

31

8.6

7.7

7.0

9.4

16

19

*36

17

54

51

47

26

51

42

42

8.8

39

17

22

32

38

51

31

26

29

41

28

873.0

28.2

1.02

1.17

Jan.

13

34

13

11

17

17

17

16

*16

17

17

17

16

29

13

2.6

14

16

17

17

21

12

129

262

T79

100

60

60

51

48

47

1,298.6

41.9

1.51

1.74

Feb.

23

35

34

37

51

46

28

45

26

51

64

57

46

38

34

31

30

27

*28

27

37

22

15

24

29

31

116

156

-

1,188

42.4

1.53

1.60

Mar.

122

83

69

66

41

42

40

49

62

100

98

77

67

63

63

75

88

88

67

61

63

71

75

64

66

*54

51

38

50

46

33

2,032

65.5

2.36

2.73

Apr.

48

44

84

83

91

183

234

205

171

160

140

123

111

96

85

69

51

53

52

43

47

48

42

33

44

32

34

35

44

24

2,509

83.6

3.02

3.37

May

*30

18

iH13

12

13

12

12

11

15

16

29

6.4

26

44

17

22

24

28

29

27

26

26

19

*22

17

18

15

14

600.0

19.4

0.700

0.81

June

11

11

18

6.2

9.1

9.4

9.1

10

5.6

8.3

5_a.

5.8

6.0

5.8

6.2

7.4

7.2

*6.6

7.0

8.2

7.2

6.6

6.0

14

39

21

82

48

24

19

430.1

14.3

0.516

0.58

July

21

17

13

11

9.7

8.6

8.2

7.2

6.8

6.6

6.0

5.6

4.8

5.0

6.2

3.6

4.8

7.3

4.4

3.6

3.0

4.1

3.7

3.6

*3.2

3.1

3.0

2.2

4.2

3.0

3.0

196.5

6.34

0.229

0.26

Aug.

3.0

3.2

3.2

3.1

3.2

3.4

2.8

2.6

2.2

2.4

2.2

6.7

9.1

2.0

1.9

2.0

1.9

1.9

2.2

1.9

2.1

1.7

2.2

2.7

2.2

1.8

1.7

1.6

2.6

1.6

1.4

82.5

2.66

0.096

0.11

Sept.

1.2

1.2

1.1

1.0

.8

.3

.2

.2

.2

.2

.2

.2

.2

.4

.4

.5

.4

.6

.6

.5

.6

.5

.4

.3

.1

.2

.2

*.2

.2

1.5

14.6

0.49

0.018

0.02

Calendar year 1956: Max 496 Mln 3.1 Mean 49.6 Cfsm 1.79 In. 24.34

Water year 1956-57 : Max 262 Mln 0.1 Mean 27.9 Cfsm 1.01 In. 13.69

* Discharge measurement made on this day.

a No gage-height recordj discharge estimated on basis of we 

typical regulation pattern, and records for Ware River near B

if weather records, recorded range In stage, 

 larre.
THAMES RIVER BASIN

French River at Webster, Mass.

Location. Lat 42°03'03", long 71 0 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 ml.

Records available. December 1948 to September 1957.

Gage. Water-stage recorder. Datum of gage Is 406.74 ft above mean sea level, datum of 

"^929.

Average discharge. 8 years (1949-57), 169 cfs.

Extremes. Maximum discharge during year, 666 cfs Jan. 24; minimum daily, 6.6 cfs 

Sept. 15.

1948-57: 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 computaticn 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. 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 1956-57 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to July 24 July 25 to Sept. 30

4.57

4.6

4.7 

4.6 

5.0

6.8

8.1

15

24

51

5.2 

5.5 

6.0

7.0

92

175

330

621

4.48

4.5

4.6

6.6 

7.3

4.7 

4.9 

5.1

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

103

96

78

87

78

13

83

~99 1O6

84

82

75

13

41

84

75

70

67

45

7.6

ea- 6.8

se

60

68

57

8.6

6.8

*64

66

4O

1,898.8

61. 0

0.715

O.82

Nov.

46

67

11

10

71

71

71

67

63

8.6

lil

70

69

57

46

38

7.6

12

78

73

74

21

124

102

68

123

117

134

107

90

1,903.4

63.4

0.743

O.83

Dec.

67

72

94

81

74

69

67

rr~7.6

*90

85

122

154

187

200

169

131

123

152

119

70

83

92

120

142

164

144

110

79

110

114

3,308.6

107

1.25

1.44

Jan.

79

1O7

98

80

46

46

91

71

*78

74

SO

28

53

91

83

71

66

53

183~6

83

71

223

571

543

361

252

227

188

16O

150

4,178

135

1.58

1.82

Feb.

132

90

112

143

138

151

132

116

102

131

189

181

148

133

104

85

94

117

*88

87

96

103

64

94

126

114

241

359

-

3,670

131

1.54

1.60

Mar.

328

256

218

191

129

127

123

TST

143

271

281

250

213

196

187

240

244

*262

247

259

231

235

138

218

208

186

171

157

147

142

145

6,267

2O2

2.37

2.73

Apr.

148

172

223

245

276

408

543

53T

481

435

4O8

370

339

318

302

277

249

175

104

128

134

142

125

117

112

115

TO

88

*130

131

7,296

243

2.85

3.18

May

103

98

85

23

44

87

75

71

66

57

11

42

96

90

84

96

107

61

72

107

98

100

98

1OO

90

85

*81

79

77

74

43

2,400

77.4

O.907

1.05

June

10

17

32

42

44

45

44

42

36

32

34

32

34

32

34

30

26

25

29

34

35

35

29

6O

97

95

172

ITT

88

62

1,441

48.0

0.563

0.63

July

59

53

44

36

34

31

29

26

*29

30

29

25

22

21

52

10

17

44

~9.2 68

66~7.6

29

45

*23

26

8.6

8.1

24

27

31

963.5

31.1

0.365

0.42

Aug.

33

46

8.1

7.3

29

34

33

23

11

12

11

27

70

28

33

29

8.6

33~~ 6.9

31

31

28

34

10

11

31

36

36

20

23

9.1

783.0

25.3

0.297

0.34

Sept.

8.1

7.7

24

29

3\

27

9.1

8.1

27

34

35

*25

49

8.1

6.6

28

37

29

41

48

7.7

6.9

50

55

52

45

47

*8.1

7.3

55

845.7

28.2

O.331

0.37

Calendar year 1956: Max 1.O6O Mln 6.8 Mean 169 Cfsm 1.98 In. 26.92

Water year 1956-57: Max 571 Mln 6.6 Mean 95.7 Cfsm 1.12 In. 15. 22

* Discharge measurement made on this day.

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 sqmi.

Records available. December 1929 to September 1957. October and November 1929 monthly 

discharge only, published In WSP 1301.

Gage. Water-stage recorder. Datum of gage Is 216.76 ft above mean s?a level, datum of 

"1929.

Average discharge. 28 years, 570 cfs.

Extremes.--Maximum discharge during year, 3,040 cfs Jan. 23 (gage height, 7.59 ft); minimum, 20 cfs Aug. 31 (gage height, 1.71 ft); minimum daily, 31 cfs Sept. 9.

1929-57: 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 ice effect or no gage-height 

record, which are good. City of Putnam diverts an average of less than 1 mgd from 

Little River for municipal supply. Large diurnal fluctuations, particularly during low 

flow, caused by many dams and reservoirs upstream, largest of which is Lake Chaubunagungamaug 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 1956-57, except periods of ice effect (gage 

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

Oct. 1 to Jan. 23

2.2 79

2.5 130

3.0 244

4.0 

5.0 

5.8

595

1,120

1,700

1.8 

2.0 

2.2 

2.5

3.0

Jan. 24 to Sept. 3O 

26

128

250

4.0 595

5.0 1,120

6.0 1,840

6.9 2,500

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

162

170

155

138

153

134

241

316

275

221

189

167

ISO

126

117

144

144 

140

126

112

1OO

98

110

117

128

130

131

109 

89

92 

117

4,601

148

0.447

0.52

Nov.

123

146

173

130

144

136

144

140

125

126

102

104

121

146

136

123

112 

177

244

264

239

345

390

376

292

358

410

390 

332

289

6,337

211

0.637

0.71

Dec.

241

234

226

226

221

213

zTfT

216

239

342

342

547

640

685

708

755

m685

591

511

487

618

595

685

708

618

555 

507

507 

b450

15,155

489

1.48

1.71

Jan.

b400

b390

b400

b400

342

307

326

323

320

323

b320

b300

284

a300

a270

a260

a260 

a250

a250

a240

286

370

1,640

2 . 200

*1,910

1,370

1,000

830 

730

S40 

600

17,841

576

1.74

2.01

Feb.

580

508

488

548

568

560

540

488

470

708

805

708

620

540

488

424

445 

445

400

361

350

358

328

350

*400

448

1,040

1.220

 -- 

15,188

542

1.64

1.71

Mar.

1.090

880

780

708

564

524

512

512

728

1,000

940

830

780

730

708

880

l.OOO 

910

805

805

805

880

830

780

755

708

640

600 

560

548

23,392

755

2.28

2.63

Apr.

580

570

1,030

*970

1,140

2,280

2.500

2,200

2,280

2,060

1,770

1,550

1,330

1,160

1,030

940

830 

755

620

600

588

568

*540

516

473

473

452

417 

438

452

31,112

1,037

3.13

3.49

May

368

347

328

292

268

271

271

256

242

222

248

277

298

301

325

313

298 

259

232

274

344

358

313

*304

250

225

230

232 

238

192 

178

8,554

276

0.834

0.96

June

150

146

150

148

139

132

146

124

122

108

99

99

95

90

87

84

82 

85

87

82

77

76

66

70

76

87

202

208 

160

128

3,405

114

0.334

0.37

July

~95 106

*84

82

77

77

70

66

71

72

70

64

77

59

50

52

49 

45

44

44

42

38

55

55

52

46

49

45 

44

44 

43

1,868

60.3

0.182

0.21

Aug.

43

40

38

40

*36

35

35

36

35

41

45

38

38

39

42

42

40 

36

31

35

35

40

38

37

43

45

46

44 

43

45 

40

1,224

39.5

0.119

0.14

Sept.

38

36

*38

40

39

36

35

36

31

32

36

34

34

36

34

32

36 

35

34

35

38

42

37

39

39

42

42

H39

1,110

37.0

0.112

0.12

Calendar year 1956: Max 4,240 Min 44 Mean 572 Cfsm 1.73 In. 23.53

Water year 1956-57: Max 2,500 Min 31 Mean 356 Cfsm 1.O8 In. 14.58

Peak discharge (base, 2,000 cfs).--Jan. 23 (3 p.m.) 3,040 cfs (7.59 ft); Apr. 7 (l a.m.) 2,570 cfs 

(6.98 ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for Quinebaug 

River at Quinebaug, Conn, and French River at Webster, Mass, 

b Stage-discharge relation affected by ice.
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, Windham County, and 3.2 miles upstream from mouth.

Drainage area.--56.2 sq mi.

Records available.--October 1937 to September 1957. Monthly discharge only for October 

1937, published in WSP 1301.

Gage.--Water-stage recorder. Datum of gage is 222.22 ft above mean sea level, datum of 

1929.

Average discharge.--20 years, 105 cfs.

Extremes. Maximum discharge during year, 460 cfs Jan. 24; maximum gage height, 3.45 ft 

Jan. 24, affected by ice; minimum discharge, 5.5 cfs Sept. 20, 21, 24; minimvm gage 

height, 0.79 ft Aug. 7; minimum daily discharge, 5.5 cfs Sept. 21.

1937-57: Maximum discharge, 2,480 cfs July 24, 1938 (gage height, 8.5S ft); minimum, 

3.8 cfs Aug. 24, 1941 (gage height, 0.44 ft); minimum daily, that of Sept. 21, 1957. 

Flood of Mar. 12, 1936, reached a discharge of 1,600 cfs, by computation of flow 

over dam at Danielson.

Remarks. Records excellent except those for periods of ice effect or backwater from 

debris on control, which are good. Plow regulated by dams and reservoirs ups-tream.

Revisions (water years). WSF 921: 1938-40. WSP 951: 1938-41.

Rating tables, water year 1956-57, except periods of ice effect and baclcwater 

from debris (gage height, in feet, and discharge, In cubic feet per second)

0.9 

1.0 

1.3

Oct. 1 to Feb. 27

1.7 

2.3 

2.8

Feb. 27 to Sept. 3O

94

230

350

0.7 5.2

.8 8.0

1.0 17

1.2 28

1.5 

2.0 

2.5 

3.1

58

143

260

380

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

35

38

38

38

29

66

67

55

43

43

39

26

36

48

42

38

35

38

34

36

31

38

45

45

40

24

42

52

46

43

1,284

41.4

0.711

0.82

Nov.

42

51

30

36

55

40

39

30

40

22

35

48

20

37

18

21

12

46

68

49

39

62

69

53

46

64

77

*65

56 

54

1,324

44.1

0.758

0.85

Dec.

31

36

55

32

39

39

38

21

43

65

59

85

104

96

134

141

171

T50

125

114

110

107

145

141

146

136

126

124

136 

147

b!32

3,028

97.7

1.68

1.94

Jan.

b!26

b!04

b!08

110

102

94

97

95

91

89

b81

b77

82

b70

b67

b64

b60

b59

b67

70

78

92

284

b341

248

222

198

177

162 

150

*140

3,805

123

2.11

2.43

Feb.

133

128

119

130

130

124

118

116

109

149

166

144

124

118

108

102

104

94

96

94

94

82

84

87

*85

92

149

142

-

3,221

115

1.98

2.06

Mar.

128

118

118

105

101

97

93

98

145

172

157

141

132

125

119

132

141

132

123

124

133

150

150

143

130

120

113

107

103 

98 in

3,859

124

2.13

2.46

Apr.

104

133

184

*160

181

360

370

310

370

350

300

260

232

210

185

167

156

147

139

132

128

127

110

79

89

*96

91

94

91

86

5,441

181

3.11

3.47

May

83

77

76

66

68

70

64

60

57

60

38

57

72

59

56

65

55

34

51

66

54

*59

56

52

21,

32

60

48

70 

42

46

1,774

57.2

0.983

1.13

June

42

39

61

43

37

36

36

14

30

50

27

28

33

35

10

10

36

36

10

43

27

10

21

40

46

33

30

44

13 

24

944

31.5

0.541

0.60

July

31

30

ii

34

*21

11

11

25

8.0

33

25

27

15

14

33

8.4

37

34

26

10

17

27

15

9.2

34

36

10

9.2

24 

8.4

8.4

672.6

21.7

0.373

0.43

Aup.

8.4

~8~. 44 8

9.6

*33

8.0

7.7

8.0

8.0

8.4

10

25

8.0

8.8

23

8.4

8.0

11

23

8.4

8.4

8.0

27

8.0

9.2

23

8.8

33

31 

22

8.4

485.3

15.6

0.268

0,31

Sept.

8.8

9.2

38

8.8

20

36

8.0

8.0

8.0

26

8.0

28

24

8.0

8.0

8.4

20

8.0

39

20

5.5

6.0

25

5.8

37

26

37

6.0

6.0 

26

522.5

17.4

0.299

0.33

Calendar year 1956: Max 690 Min 7.4 Mean 115 Cfsm 1.98 In. 26.81

Water year 1956-57: Max 370 Mln 5.5 Mean 72.2 Cfsm 1.24 In. 16.83

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice. 

Note. Backwater from debris on control May 8-22, Sept. 9-30.
150 THAMES RIVER BASIN

Moosup River at Moosup, Conn.

Location. Lat 41°42'37", long 71 0 53'11", 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, Mew 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 1957.

~~Sage. Water-stage recorder. Datum of gage is 196.64 ft above mean sea level, datum of

Average discharge. 25 years, 162 cf s .

Extremes . Maximum discharge during year, 1,230 cfs Apr. 6 (gage height, 4.71 ft); minimum, 4.4 cfs Oct. 20 (gage height, 0.68 ft); minimum daily, 5.7 cfs Oct. 6, 13.

1932-57: Maximum discharge, 4,260 cfs Mar. 12, 1936 (gage height, 8.35 ft), from 

sharp, short rise of unknown origin; maximum natural discharge, 4,100 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, wt ich are good. Low 

flow completely regulated by mills upstream.

Revisions (water years) . WSP 781: Drainage area. WSP 851: 1933, 1934 (M), 1935-37.

Rating tables, water- year 1956-57, except periods of loe effect (gage 

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

Oct. 1 to Aug. 1 Aug. 1 to Sept. 30

0.7 

.9 

1.1 

1.3 

1.6

4.8 

9.7

56

2.0 

2.5 

3.0 

4.0 

4.6

117

262

435

875

1,170

0.9 

1.0 

1.2

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

60 

56

27

16

28

48 5.7 

-BY 115

49

46

38

5.7

8.4

37

61

32

31

18

7.8

IS

30

25

33

30

*53

20

20

37

38

39

1,093.6

35.3

0.423

0.49

Nov.

58 

99

59

66

84

59 

32

37

32

7.5

25

50

59

35

42

33

11

121

197

151

76

166

217

134

67

269

297

?34

171

137

3,025.3

101

1.21

1.35

Dec.

43 

78

110

90

82

91 

101

28

95

117

149

236

255

297

538

560

495

370

255

204

147

157

283

314

311

266

216

201

204

b!44

158

6,598

215

2.55

2.94

Jan.

b!39 

b201

b!08

b!51

b66

95 

118

134

b89

93

b!20

b64

57

blOO

b9O

b9O

b85

b85

b65

b80

b!70

b!25

728

695

538

332

225

192

191

138

*165

5,559

179

2.14

2.47

Feb.

149 

118

99

190

186

189

137

128

167

250

336

257

179

149

122

112

77

131

110

102

115

105

70

68

154

102

267

286

-

4,305

154

1.84

1.92

Mar.

234 

192

180

151

137

136 

133

119

305

300

308

234

198

147

164

183

219

216

196

188

188

280

290

255

216

192

148

156

140

94

155

6,034

195

2.34

2.70

Apr.

175 

246

427

360

392

1.140 

995

672

740

650

475

374

314

276

240

225

193

187

184

160

166

163

139

144

145

114

111

90

148

118

9,763

325

3.89

4.34

May

89 

87

1O6

48

47

1O6 

100

79

67

77

44

32

1O2

73

99

91

85

16

53

126

61

*81

78

76

14

33

78

92

61

14

58

2,183

70.4

0.843

0.97

June

13 

14

77

58

33

3O 

42

13

11

32

36

28

36

41

13

10

2127 '

25

30

24

12

10

23

22

25

18

18

11

9,.!

764.7

25.5

0.305

0.34

July

9.2 

9.2

9.4

8.9

*9.2

9.2

10

9.4

*8.9

8.4

8.1

7.8

775

9.7

26

21

24

17

13

12

12

11

11

13

11

12

12

11

12

11

11

365.2

11.8

0.141

0.16

Aug.

9.4 

9.6

1O

11

*11

10 

10

10

10

10

10

10

1O

10

11

12

TT

11

10

9.4

8.4

7.8

7.5

6.9.

7.8

8.7

.8

.2

.2

.5

.8

290.2

9.36

0.112

0.13

Sept.

tt

7.8

8.4

8.7

9.0

9.4

9.8

10

*10

10

11

11

11

11

11

12

11

12

12

11

14

14

12

12

12

12

12

12

12

323.1

10.8

0.129

0.14

Calendar year 1956: Max 852 Min 5.2 Mean 167 Cfsm 2.00 In. 27.23

Water year 1956-57: Max 1,140 Min 5.7 Mean 110 Cfsm 1.32 In. 17.95

Peak discharge (base, 800 cfs-).--Jan. 23 (2 p.m.) 945 cfs (4.17 ft); Apr. 6 

(4.71 ft).

a.m.) 1,230 cfs

* Discharge measurement made on this day. 

b Stage-discharge relation affected by Ice.
THAMES RIVER BASIN 151 

Quinebaug 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 

Pisk Mills, Inc., at mouth of Pauchaug River, 1,000 ft downstream from railroad bridge, 

and at mile 6.1.

Drainage area. 711 sq mi.

Records available.--July 1918 to September 1957.

Gage. Water-stage recorder. Datum of gage is 63.07 ft above mean sea level, datum of 

1929.

Average discharge. 39 years, 1,247 cfs.

Extremes. Maximum discharge during year, 6.570 cfs Apr. 6 (gage height, 12.20 ft); minimum, 39 cfs Oct. 6 (gage height, 3.70 ft); minimum daily, 57 cfs Aug. 10.

1918-57: 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 pea'r flows 

over three nearby dams at gage heights 21.7, 22.5, 24.0 and 29.0 ft; minimum daily, 

18 cfs Aug. 28, Dec. 11, 1949.

Remarks. Records excellent. Plow regulated by many ponds and reservoirs upstream, the 

largest of which are Lake Chaubunagungamaug and Pauchaug pond.

Revisions (water years). WSP 781: Drainage area. WSP 1301: 1919-26(M).

Rating tables, water year 1956-57 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Apr. 6 Apr. 7 to Sept. 30

3.8 52

4.2 123

4.6 220

5.0 350

6.0

8.0

10.0

11.8

790

2,130

4,060

6,090

3.8 

4.2 

4.6

49

116

212

5.0 

6.0

337

790

Note. Same as preceding 

table ababove 6.0 ft.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

515 

404

429

403

349

87

432

760

722

592

534

310

360

301

497

358

346

356

328

11

195

416

359

356

345

*322

67

232

418 

336

359

11,555

373

0.525

.0.61

Nov.

440 

426

321

402

495

444

403

433

398

67

133

457

376

338

351

380

66

378

815

715

640

730

1,060

890

715

970

1.210

1,120

970 

815

16,958

565

0.795

0.89

Dec.

615 

568

690

615

590

590

512

440

590

940

890

1,120

1,440

1,510

2,310

2,400

2.490

2,220

1,810

1,540

1,340

1,240

1,580

1,770

1,810

1,810

1,580

1,400

1,340

1,340 

1,090

40,180

1,296

1.82

2.10

Jan.

1,120 

1,060

915

915

915

815

890

865

815

840

765

715

740

815

690

665

672

640

640

615

715

740

2,280

4.610

3,960

3,160

2,310

1,930

1,650

1,510 

1,370

40,342

1,301

1.83

2.11

Feb.

*1,340 

1,240

1,090

1,340

1,370

1,340

1,240

1,180

1,120

1,580

2,130

1,810

1,540

1,340

1,180

1,090

970

1,120

1,000

940

890

840

840

790

915

*915

1,750

2.490

-

35, 390

1,264

1.78

1.85

Mar.

2,220 

1,930

1,730

1,580

1,370

1,240

1 18O

l]l8o

1,580

2.310

2,220

1,890

1,730

1,580

1,480

1,650

2,010

1,890

1,730

1,690

1,770

2,050

2,090

1,890

1,770

1,620

*1,480

1,340

1,240

1,180 

1,240

51,860

1,673

2.35

2.71

Apr.

1,270 

1,460

2,490

2,400

2,490

5,530

6.090

5,650

5,270

5,050

4,170

3,560

3,060

2,670

2,400

2,130

1,970

1,810

1,650

1,510

1,480

1,370

1,300

*1,240

1,150

1,120

1,120

1,000

1,060

970

73,840

2,461

3.46

3.86

May

915 

815

765

740

640

715

665

690

615

640

740

715

383

555

740

740

690

590

526

640

740

*765

715

665

518

448

540

565

495

444 

403

19,817

639

0.899

1.04

June

373 

334

392

384

355

327

290

259

235

284

274

284

373

337

262

183

172

188

226

250

215

193

168

162

185

204

215

238

262

244

7,868

262

0.368

0.41

July

*221 

196

*162

148

151

168

155

135

122

126

129

135

137

151

142

146

146

148

155

133

108

99

97

112

99

95.

112

110

116

162 

155

4,271

138

0.194

0.22

Aug.

*1F4 

103

90

95

97

112

118

99

90

51

68

79

160

101

79

81

79

74

76

126

108

88

79

68

97

154

~99 177

88 

90

93

3,0*9

98.4

0.138

0.16

Sept.

92 

86

93

124

129

97

88

93

86

*110

99

90

79

79

81

88

133

110

92

79

79

101

108

118

106

95

84

105

105 

92

2,921

97.4

0.137

0.15

Calendar year 1956: Max 7,170 Mln 28 Mean 1,289 Cfsm 1.81 In. 24.69

Water year 1956-57: Max 6,090 Mln 57 Mean 844 Cfsm 1.19 In. 16.11

Peak discharge (base, 4,500 cfs). Jan. 24 (8 a.m.) 4,940 cfs (10.78 ft); Apr. 6 (9 p.m.) 6,570 cfs 

(12.20 ft).

* Discharge measurement made on this day.
152 THAMES RIVER BASIN

Yantic River at Yantic, Conn.

Location. --La t 41 "33 "31", long 72°07'19", on left bank at Yantic, New London, County,

700 ft downstream from stone-arch highway bridge, 1 mile downstream from Susquetenscut 

Brook, and 4.8 miles upstream from mouth.

Drainage area . 88.6 sq mi.

Records available .--October 1930 to September 1957.

~Gage .--Water-stage recorder. Datum of gage is 94.46 ft above mean sea level, datum of 

Average discharge. 27 years, 160 cfs.

Extremes.- -Maximum discharge during year, 1,540 cfs Jan. 23 (gage height, 6.86 ft); minimum, 4.2 cfs Aug. 19, 20 (gage height, 0.62 ft); minimum daily, 4.3 cfs Aug. 18-20.

1930-57: Maximum discharge , 13,500 cfs Sept. 21, 1938 (gage height, 14.66 ft, from 

floodmark), by computation of flow over 2 dams 2-J- miles upstream and 3 miles downstream 

from station, respectively; minimum, 2.3 cfs sometime during period July 21 to Aug. 11, 

1949; minimum gage height, 0.41 ft Oct. 13, 1930; minimum daily discharge, 3.3 cfs 

Oct. 13, 1930.

Remarks . Records good. Low flow completely regulated by mills upstream.

Revisions (water years ) . WSP 781: Drainage area. WSP 1051: 1931-35. WSP 1301: 1934(M).

Rating table, water year 1956-57 (gage height, In feet, and discharge, 

In cubic feet per second)

0.6 

.8 

1.0 

1.2 

1.6

4.0 

6.8

2.0 

3.0 

4.0 

5.0 

6.4

84

225

445

740

1,290

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

51

43

40

38

38

34

120

154

102

53

75

37

15

15

61

46

48

48

38

12

12

18

47

60

50

44

36

30

54

54

*56

1,529

49.3

0.556

0.64

Nov.

58

70

54

62

50

65

60

49

39

18

16

27

32

30

32

32

32

161

176

Tie

81

156

168

112

70

133

163

116

90

76

2,344

78.1

0.881

0.98

Dec.

65

66

66

67

62

58

62

61

96

202

156

270

269

282

590

500

358

257

182

154

142

151

249

253

249

200

158

146

154

148

131

5,804

187

2.11

2.43

Jan.

122

106

96

95

95

86

95

93

94

96

94

95

90

85

78

68

73

71

70

64

74

120

1.080

709

345

233

184

169

157

*148

141

5,126

165

1.86

2.14

Feb.

138

135

124

178

205

186

160

150

173

370

325

221

170

148

138

130

131

122

119

116

99

96

100

131

150

*164

445

370

_

4,994

178

2.01

'2.09

Mar.

249

200

199

178

152

139

141

152

285

515

235

186

163

150

138

202

221

181

160

231

277

311

249

190

156

139

*135

126

118

122

116

5,816

188

2.12

2.44

Apr.

107

233

370

265

418

1.290

710

445

680

515

358

285

245

217

198

182

170

163

176

168

158

142

131

*130

122

126

128

116

112

94

8,454

282

3.18

3.55

May

88

79

71

71

74

68

64

61

53

66

32

52

SI

58

109

102

69

58

54

66

*110

87

67

66

55

44

43

56

43

30

2_6

1,983

64.0

0.722

0.83

June

23

23

50

51

59

60

48

12

12

59

55

52

51

34

10

10

40

41

43

38

38

11

11

35

32

34

10

10

9.6

9.5

970.9

32.4

0.366

0.41

July

9.0 *Co

9.0

9.0

9.0

8.7

8.5

8.5

8.2

8.0

.8

.4

.6

.5

. o

.6

.4

.4

.6

.6

.2

.2

.2

.2

.0

.0

.8

.8

.2

.0

241.2

7.78

0.088

0.10

Aug.

6.6

6.5

6.5

6.5

6.5

6.5

6.2

*6.0

5.8

5.7

5.7

5.4

5.1

4.9

4.9

4.9

4.7

4.5

4.5

4.3

5.1

5.4

5.3

5.3

6.2

9,1

7.8

6.5

6.3

6.3

6.5

181.2

5.85

0.066

0.08

Sept.

6.2

6.0

6.0

6.0

5.8

5.7

5.7

5.8

5.8

5.7

*5.7

5.5

5.4

5.3

5.1

5.1

5.4

5.5

5.5

5.4

5.7

6.6

6.8

6.5

6.3

6.2

6.2

6.0

6.0

6.0

174.9

5.85

0.066

0.07

Calendar year 1956: Max 725 Mln 7.8 Mean 152 Cfsm 1.72 In. 23.49

Water year 1956-57= Max 1,290 Mln 4.3 Mean 103 Cfsm 1.16 In. 15.76

Peak discharge (base, 1,000 cfs). Jan. 23 (11 a.m.) 1,540 cfs (6.86 ft)j Apr. 6 (5:30 a.m.) 1,490 

cfs (6.76 ft).

Discharge measurement made on this day.
CONNECTICUT RIVER BASIN 1S3

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

Location. Lat 45°05'15", long 71°17'3S", on right bank a quarter of a mile downstream 

from dam at First Connecticut Lake and 6 miles northeast of Pittsburg, Coos County.

Drainage area.--83.0 sq mi.

Records available.--April 1917 to September 1957.

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.--40 years, 195 cfs (adjusted for storage).

Extremes.--Maximum discharge during year, 547 cfs Dec. 31 (gage height, 3.11 ft); minimum 

daily, 8.7 cfs Apr. 10-17.

1917-57: 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 dam 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. 233).

Revisions (water years).--WSP 756; Drainage area. WSP 1001: 

23(M) , 1925-26.

1931-39. WSP 1231: 1921-

Ratlng table, water year 1956-57 (gage height, In feet, and discharge, 

In cubic feet per second)

1.4

1.5 

1.7 

2.0

2.2 

2.5 

3.0 

3.5

142

240

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

IB

19

20

21

22

23

24

25

26

27

28

29 

3O

31

Total

Mean

(t)

Oct.

163

242

38O

380

380

380

380

38O

380

236

17

17

17

164

375

375

375

375

375

370

370

370

370

375

370

370

370

370

370 

*370

375

9,841

317

-232

Nov.

361

330

330

330

33O

330

330

325

325

325

325

325

325

325

325

325

325

325

325

320

320

128

15

Ts

145

370

370

*370

246 

15

8,555

285

-153

Dec.

129

330

334

334

334

330

330

158

15

15

15

15

15

15

15

15

187

409

T5T

163

163

163

163

163

163

163

163

163

163 

163

294

5,239

169

-64.3

Jan.

54O

540

534

528

504

450

444

438

432

432

432

432

420

415

g415

420

426

g426

g426

g432

g432

g432

218

13

13

13

12

139

432 

432

338

11,56O

373

-285

Feb.

157

157

157

157

246

438

432

426

432

432

426

432

432

432

432

432

426

426

426

426

426

426

432

420

420

4OO

129

9.5

-

9,986.3

357

-302

Mar.

9.3

9.3

9.3

95

280

320

320

320

320

294

244

222

248

280

307

325

330

330

330

320

316

307

298

272

230

195

166

145

131 

118

106

7,196.9

232

-149

Apr.

99

108

113

113

110

108

108

104

56

8.7

8.7

8.7

8.7

8.7

8.7

8.7

8.7

9.3

9.3

9.9

11

11

11

11

11

11

11

12

13 

13

1,132.1

37.7

+ 518

May

13

13

nz

12

12

12

12

12

12

12

12

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

13

14

14 

14

14

398

12.8

+282

June

ii

14

14

14

14

14

14

14

14

14

14

14

14

14

14

14

242

30O

14

14

14

15

15

15

15

15

15

15

15 

15

943

31.4

+102

July

15

15

15

15

15

15

15

15

15

15

15

15

15

. 16

15

15

15

15

15

15

15

19

16

16

16

16

16

16

17 

16

16

480

15.5

+227

Aug.

16

16

16

16

186

264

264

26O

260

26O

260

264

260

260

260

260

260

260

260

*Z60

264

264

264

264

276

£80

276

£72

272 

272

£68

7,134

230

-187

Sept.

268

264

264

95

15

15

15

15

16

16

16

16

16

16

17

17

17

17

17

17

17

17

18

18

18

18

18

IB

18 

18

1,327

44.2

+39.9

Adjusted for change In reservoir contents

Mean 

Cfsm 

In.

85.5 

1.03 

1.19

13Z 

1.5S 

1.77

Calendar year 1956: 

Water year 1956-57:

105 

1.27 

1.45

88.1 

1.06

1.22

54.7 

0.659 

0.69

82.7 

0.996 

1.15

556 

6.70 

7.47

295 

3.55 

4.09

Observed

Max 547 Min 8.7 Mean 167 

Max 540 Mln 8.7 Mean 175

134 

1.61 

1.80

243 

2.93 

3.37

42.7 

0.514 

0.59

84.2 

1.01 

1.13

Adjusted

Mean 178 Cfsm 2.14 In. 29.13 

Mean 159 Cfsm 1.92 In. 25.92

First Connecticut and Second

* Discharge measurement made on this day.

t Change In contents, equivalent In cubic feet per secoi 

nectlcut Lakes.

g Computed from once-daily tape-gage readings and records of gate operation at First Conne 

Lake.

505692 O - 59 - 11
154 CONNECTICUT RIVER BASIN

Connecticut River below Indian Stream, near PIttsburg, K. H.

Location. Lat 45°02 I 25", long 71°26'35", on right bank 1,200 ft downstream from Indian 

Stream and 2.5 miles west of PIttsburg, Coos County.

Drainage area. 254 sq mi.

Records available. October 1956 to September 1957.

Gage. Water-stage recorder. Altitude of gage Is 1,150 ft (from topographic map).

Extremes.--Maximum discharge during year, 2,580 cfs Apr. 22 (gage height, 5.44 ft); minimum daily, 41 cfs Sept. 12, 13.

Remarks.--Records good except those for the periods of no gage-height record, which are 

fair. Plow regulated by First Connecticut and Second Connecticut Lakes and Lake 

Francis (see p. 233).

Rating table, water year 1956-57, except periods of Ice effect (gage 

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

1.7 

2.0 

2.3

2.5

38

86

163

234

3.0 

3.5 

4.0 

5.0

470

760

1,140

2,100

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

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.

400

550

800

800

800

800

850

1.000

9OO

600

150

130

120

350

790

790

*788

*578

774

767

760

754

754

748

748

742

742

736

748

*754

754

20,977

677

-416

Nov.

730

652

646

646

640

640

640

640

634

634

628

634

640

640

640

652

748

712

670

670

688

1,110

561

b305

b385

865

851

*830

638

b!30

19,499

650

-E69

Dec.

b260

688

670

676

670

670

700

580

b235

b220

bZOO

177

blSl

b!25

120

139

485

943

385

405

4OO

395

38O

380

385

380

360

370

370

b365

b450

12,734

411

-100

Jan.

742

858

980

1.060

996

844

837

830

837

837

837

830

*830

830

830

830

830

830

830

830

830

b830

b730

b7OO

676

598

520

651

940

916

°

25,215

813

-516

Feb.

410

400

390

385

530

865

865

858

858

651

851

851

844

844

844

*844

844

844

844

837

844

637

837

830

837

851

b560

b540

-

20,995

750

-544

Mar.

604

574

514

582

916

908

893

879

879

879

879

872

872

872

886

932

972

1,150

1.360

1,360

1,340

*697

b!90

b!63

157

b!36

154

b!60

b!63

b!63

b!57

21,263

686

-359

Apr.

b!57

248

b375

b280

201

204

246

b!97

173

blSl

151

163

197

170

b!42

148

208

284

489

872

1,820

1.B40

1,080

1,170

879

676

652

604

476

694

14,947

498

+1,003

Hay

476

340

*280

242

230

201

177

157

145

186

316

227

183

166

383

682

390

280

227

280

370

263

216

197

173

148

148

166

190

148

128

7,715

249

+509

June

116

120

160

123

106

95

*157

204

142

116

99

90

93

84

76

69

435

715

254

232

136

101

84

76

84

156

148

128

126

126

4,651

155

+187

July

225

552

309

386

513

560

275

197

148

128

116

101

90

84

223

187

148

108

84

73

66

341

310

187

136

113

97

88

258

777

335

7,215

233

+442

Aug.

219

170

148

142

567

580

574

564

558

586

592

598

569

558

552

537

547

547

542

*542

536

530

517

542

536

542

542

403

48

103

530

14,521

468

-292

Sept.

530

530

558

272

62

56

51

49

45

44

42

*41

4T

269

362

61

168

97

69

60

58

62

287

298

170

120

104

93

82

75

4,756

159

+55.2

Adjusted for change In reservoir contents

Mean 

Cfsm 

In.

261 

1.03 

1.18

381 

1.50 

1.67

310 

1.22 

1.41

297 

1.17 

1.35

206

0.811 

0.84

327 

1.29 

1.49

1,501 

5.91 

6.59

758 

2.98 

3.44

Observed

Calendar year 1956: 

Water year 1956-57:

Max - Mln - Mean - 

Max 1,840 Mln 41 Mean 478

342 

1.35 

1.50

674 

2.65 

3.06

176 

0.693

0.80

Adjusted

214 

0.843 

0.94

Mean - Cfsm - In. - 

Mean 454 Cfsm 1.79 In. 24.27

* 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.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Oct. 1-16, Jan. 14, 15; discharge estimated on basis of weather records and records of gate operation and flow released from Lake Francis.
CONNECTICUT RIVER BASIN 155

Connecticut River at North Stratford, N. H.

Location. Lat 44°44'55", long 71°37 I 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 1957.

Qaee. Water-stage recorder. Datum of gage is 880.17 ft above mean sea level, drtum of 

1929.

Average discharge. 27 years, 1,549 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 9,550 cfs Apr. 21, 22 (gage height, 8.58 ft); 

maximum gage height, 10.08 ft Jan. 23 (ice jam); minimum daily discharge, 145 cfs 

Sept. 13.

1930-57: Maximum discharge, 28,700 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 periods of ice effect, which are fair. Plow 

regulated by powerplants and by First Connecticut and Second Connecticut Lakes and Lake 

Francis (see p. 233).

Revisions (water years). WSP 781: 1934(M). WSP 891: Drainage area.

Rating table, water year 1956-57, except periods of ice effect 

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

2.8 

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 1956 to September 1957

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.

1,080

1,140

1,340

1,400

1,270

1,180

1,860

5^000

2,220

1,790

1,190

830

730

683

967

1,190

1,180

1,100

954

1,070

1,070

1,070 

1,070 

1,070

1,040

1,020

1,010

1,020

1,020

 1,010

1,010

37,584

1,212

-416

Nov.

1,100

1,130

1,010

976

954

932

910

910

900

900

880

921

1,150

1,120

1,070

1,190

1,490

1,410

1,150

1,120

1,330

5.450 

3,380

1,650

1,050

1,610

1,760

*1,590

1,490

1,020

41,553

1,385

-269

Dec.

612

800

950

1,100

1,100

1,150

1,250

1.900

1,400

1,030

1,080

1,240

1,230

1,010

1,040

998

1,150

1,610

1,200

1,320

1,180

1,020 

900 

900

910

820

790

850

800

550

620

32,510

1,049

-100

Jan.

720

850

1,500

1,350

1,350

1,150

1,150

1,150

1,150

1,200

1,100

1,100

1,150

gl , 100

gl.OSO

gl.OSO

gl.OSO

gl.OSO

gl.OSO

gl.050

gl.OSO

1,200 

4.000 

3,800

2,590

2,240

2,080

1,960

2,000

1,900

1,700

46,840

1,511

-516

Feb.

1,400

1,050

950

880

850

1,150

1,350

1,250

1,250

1,300

1,300

1,200

1,250

1,250

1,200

1,200

1,150

1,150

1,150

1,150

1,100

1,150 

1,150 

1,100

1,100

1,200

1,650

1.950

-

33,830

1,208

-544

Mar.

1,950

1,750

1,500

1,400

1,500

1,550

1,500

1,450

1,400

1,450

1,400

1,400

1,350

1,450

1,550

2,000

2,200

2.260

2,200

2,260

2,160

*2,150 

1,440 

1,390

1,120

1.010

1,130

1,150

1,220

1,190

1,060

48,540

1,566

-359

Apr.

1.040

1,840

2,400

1,670

1,400

1,490

2,120

1,530

1,370

1,140

1,150

1,200

1,610

1,300

1,060

1,080

1,430

1,840

2,750

4,650

8,080

8.600 

5,690 

5,010

4,160

3,580

3,340

3,040

2,460

Z,850

80,880

2,696

+1,003

May

2,430

*1,790

1,480

1,340

1,200

1,070

890

890

790

908

1,780

1,350

1,150

1,260

2,770

3.800

2,400

1,680

1,360

1,900

3,190

2,100 

1,630

1,400

1,180

1,010

1,080

1,070

1,120

921

810

47,749

1,540

+509

June

730

810

1,080

850

701

*612

904

1.120

820

692

556

533

511

467

414

389

336

904

781

830

564

408 

347 

325

285

691

760

790

720

612

19,540

651

+187

July

683

1,120

994

1,770

2,330

2,290

1,270

1,080

830

790

692

601

511

434

395

533

511

414

347

299

244

1J460

987

701

588

482

564

2,310

1,480

32,960

1,063

+442

Aug.

987

710

629

683

557

910

830

790

770

991

1.440

1,2~60

1,010

890

827

760

730

720

710

692

*674

665 

647 

620

638

656

692

674

465

230

271

23,128

746

-292

Sept.

604

598

730

814

395

274

214

213

188

161

156

172

*145

147

446

428

504

482

371

196

283

295 

1,190

854

612

474

414

359

325

13,474

449

+55.2

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

797 

0.997 

1.15

1,116 

1.40 

1.56

Calendar year 1956: 

Water year 1956-57:

948 

1.19 

1.37

995 

1.25 

1.44

664 

0.831 

0.87

1,207 

1.51 

1.74

3,699 

4.63 

5.16

2,050 

2.57 

2.96

Observed

Max 9,100 Min 341 Mean 1,355 

Max 8,600 Mln 145 Mean 1,256

838 

1.05 

1.17

1,505 

1.88 

2.17

454

0.568 

0.65

504 

0.631 

0.70

Adjusted

Mean 1,378 Cfsm 1.72 In. 23.49 

Mean 1,233 Cfsm 1.54 In. 20.94

Peak discharge base, 10,000 cfs.--No peak above base.

* 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.

g Computed from twice-daily tape-gage readings.

Note. Sbage-discharge relation affected by ice Nov. 24, 25, Dec. 2-9, Dec. 28 to Jan. 23, Jan. 29 

to Mar. 17, Mar. 19, 28.
156 CONNECTICUT RIVER BASIN

Upper Ammonoosuc River near Groveton, N. H.

Location. Lat 44°37'30", long 71°28'10", on left bank 75 ft upstream from highway bridge, 

0.2 mile downstream from Nash Stream, and 2f miles northeast of Groveton, Coos County.

Drainage area. 232 sq mi.

Records available. August 1940 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 920 ft (from topographic map).

Average discharge. 17 years, 475 cfs (adjusted for diversion).

Extremes. Maximum discharge during year, 3,070 cfs Apr. 22 (gage height, 6.34 ft); maximum gage height, 8.23 ft Jan. 24 (Ice jam); minimum discharge, 61 cfs Sept. 10.

1940-57: 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 periods 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 1955-57, 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

2.9 

3.2 

3.5 

4.0

108

210

345

645

5.0 

6.0 

7.0

1,480

2,610

4,250

2.6 

2.9

3.2 

3.5

211

345

Note.--Same as preceding 

table above 3.5 ft.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

476

444

355

305

254

222

348

631

434

330

282

250

234

226

214

206

199

188

178

171

167

164

164

185

196

171

160

157

*154

154

174

7,793

251

2.69

Nov.

238

325

268

230

218

199

188

181

174

171

154

174

250

254

226

272

335

295

230

190

270

1,450

1,210

659

390

460

*450

380

330

320

10,491

350

2.48

Dec.

270

285

250

285

250

250

400

800

600

450

350

380

340

310

290

310

330

2BO

260

240

220

210

205

200

200

200

170

190

180

165

150

9,020

291

2.39

Jan.

170

165

160

160

155

155

155

155

155

155

150

150

*145

140

135

135

130

130

125

125

125

150

800

1,800

1,000

700

540

450

400

360

330

9,605

310

2.53

Feb.

310

290

280

260

250

240

230

220

215

210

205

200

195

190

190

*190

185

ISO

180

180

180

175

175

175

190

500

1,200

1,600

_

8,595

307

2.50

Mar.

850

650

500

42O

350

290

250

220

280

330

290

260

240

220

250

580

600

450

350

310

*290

290

330

310

280

270

270

270

270

270

250

10,790

348

2.58

Apr.

250

600

940

620

486

486

638

486

417

355

380

428

659

516

400

390

492

631

815

1,320

2,390

2.940

2,140

1,860

1,650

1,430

1,380

1,280

1,190

1,180

28,749

958

2.35

May

916

*722

631

556

504

462

428

406

390

417

694

562

530

908

1,410

1,680

1 T 110

778

638

914

1,450

1,230

916

778

673

549

530

486

450

400

370

22,488

725

2.27

June

335

406

575

428

365

*320

498

498

375

310

277

254

250

223

215

197

174

163

183

259

211

170

174

474

330

428

428

422

370

320

9,632

321

2.62

July

325

340

264

530

792

924

510

395

330

350

325

286

242

219

*234

219

204

180

160

144

138

742

1.190

575

474

375

295

272

305

498

395

12,232

395

2.20

Aug.

290

238

223

208

186

170

157

144

135

135

173

180

154

135

124

118

110

107

102

97

89

84

82

77

75

82

87

87

79

75

70

4,073

131

2.28

Sept.

67

67

92

110

94

79

75

70

65

M

67

*77

*77

70

67

81

115

99

77

75

82

100

467

367

190

132

107

94

84

79

3,289

110

2.53

Adjusted for diversion

Mean 

Cfsm 

In.

254 

1.09 

1.26

35Z 

1.5Z 

1.6E

Calendar year 1956: 

Water year 1956-57:

293 

1.26 

1.46

312 

1.34

1.55

309 

1.33 

1.39

351 

1.51 

1.74

961 

4.14 

4.62

728 

3.14 

3.62

Observed

Max 3,490 Mln 78 Mean 463 

Max 2,940 win 63 Mean 375

324 

1.40 

1.56

397 

1.71 

1.97

134 

0.578 

0.66

112 

0.483 

0.54

Adjusted

Mean 466 c°sm 2.01 In. 27.31 

Mean 377 C"sm 1.62 In. 22.06

Peak discharge (base, 2,900 cfs). Apr. 22 (10 to 11:30 a.m.) 3,070 cfs (6.34 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, Nov. 25 to Apr. 4 (no gage-height record Jan. 24 to Feb. 3).
CONNECTICUT RIVER BASIN 157

Connecticut River near Dalton, N. H.

Location. Lat 44 C 24'35", long 71 C 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 1957. Published as "at Waterford, Vt." 1927- 

$5~. Records published for both sites January to September 1935.

Page. 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 downstream at 

present datum.

Average discharge. 30 years, 2 ,i 

storage).

cfs (adjusted to drainage area at present site and for

Extremes. Maximum discharge during year, 13,800 cfs Apr. 22 (gage height, 15.50 ft); minimum daily, 154 cfs Sept. 11.

1927-57: 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 no gage-height record, 

which are fair. Plow regulated by powerplants and by First Connecticut and Second 

Connecticut Lakes, Lake Francis (see p. 233), and other reservoirs. These r3servoirs 

have a combined usable capacity of about 8 1/3 billion cubic feet.

Revisions (water years). WSP 

1928-35(M).

Drainage area. WSP 1231: 1935. WSP 1301:

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

,240

,770

,030

,170

,180

,840

,400

,370

, 150

,180

,630

,240

,400

796

,080

,550

,800

,810

,670

,640

,150

,450

,630

,620

,590

,590

,570

,180

* ,190

,490

,510

55,916

1,804

-416

Nov.

1,520

1,930

2,230

1,290

1,110

1,420

1,330

1,370

1,310

1,380

1,210

991

1,600

2,080

1,920

1,740

2,080

2,320

2,050

1,820

1,850

4,500

8, 390

5,460

3,370

2,400

*2,680

3,070

2,880

2,590

69,691

2,323

-269

Dec.

1,700

900

1,150

1,600

1,800

1,750

1,990

2,870

4,070

3,130

2,630

2,430

2,520

2,480

2,190

1,650

2,260

2,630

2,560

2,290

2,100

2,070

1,810

1,520

1,410

1,510

1,570

1,380

1,510

1,550

aBOO

61,730

1,991

-100

Jan.

a750

a700

a ,200

a ,600

a ,900

a ,500

a ,600

,650

,600

,600

,550

,650

,400

a ,500

a ,250

,350

,200

,350

,400

,350

,400

,450

,700

,800

,920

,370

,100

,300

,000

,800

2,600

69,540

2,243

-516

Feb.

2,500

2,400

1,450

1,600

1,700

1,750

1,650

1,750

1,850

1,550

1,650

1,700

1,700

1,550

1 , 550

1,700

1,500

1,450

1,600

1,600

1,600

1,550

1,550

1 , 400

1,450

1,600

2,390

5,550

_

49,370

1,760

-544

Mar.

3,830

3,620

3,140

2,620

2,360

2,080

2,190

2,180

2,200

2,020

2,120

2,210

2,040

2,120

2,280

2,970

4,190

4,190

3,590

*3,480

3,330

3,440

3,610

3,200

2,720

2,490

2,330

2,370

2,420

2,420

3,280

86,040

2,775

-359

Apr.

2,370

2,430

4,720

4,340

3,370

3,220

3,970

3,900

3,140

2,710

2,520

2,510

3,370

3,350

2,850

3,480

2,510

3,080

3,910

5,840

9,740

13,800

13,100

10,900

9,130

7,750

6,900

6,410

5,790

*5,270

154,280

5,143

+1 , 003

May

5,270

4,300

3,490

3,020

2,710

2,420

2,240

2,020

1,940

1,760

2,040

2,730

2,680

3,110

4,380

8,050

7,050

5,010

3,770

3,550

6,260

6,410

4,890

3,930

3,450

2,980

2,710

2,380

2,360

2,240

1,930

111,080

3,583

+509

June

1,590

1,270

2,190

*2,290

1,900

1,550

1,630

2,190

2,080

1,500

1,500

1,330

1,050

1,210

931

542

907

847

1,360

1,770

1,330

1,040

782

1,050

1,270

1,340

2,070

2,200

2,270

1,390

44,379

1,479

+187

July

,180

,860

,890

,070

,270

,170

,060

,910

,370

,960

,920

,730

,510

768

,000

940

,310

,330

968

836

429

1,630

6,050

4,820

3,330

2,570

2,020

959

1,300

2,310

3,260

67,430

2,175

+442

Av<5.

2,640

2,150

1,540

957

1,010

1,440

1,330

1,310

1,270

1,240

1,090

2,120

1,900

*1,450

1,290

1,240

1,140

836

784

998

958

990

974

908

699

850

998

911

940

828

859

37,650

1,215

-292

Sept.

475

275

1,060

1,090

1,250

3770

a850

3290

a!75

166

154

492

269

312

492

529

894

612

626

752

274

336

1,900

2,450

2,250

1,450

1,090

958

329

641

23,191

773

+55.2

Adjusted for change In reservoir contents

Mean 

Cfsm 

In.

1,388 

0.917 

1.06

2,054 

1.36 

1.51

Calendar year 1956: 

Water year 1956-57;

1,891 

1.25 

1.44

1,727 

1.14 

1.31

1,216 

0.803 

0.84

2,417 

1.60 

1.84

6,145 

4.06 

4.53

Observed

4,093 

2.70 

3.12

Max 17,900 Mln 570 Mean 2,667 

Max 13,100 Min 154 Mean 2,275

1,666 

1.10 

1.23

2,617 

1.73 

1.99

Adjustec

922 

0.609 

0.70

828

0.547 

0.61

Mean 2,691 Cfsm 1.78 In. 24.18 

Mean 2,251 Cfsm 1.49 In. 20.18

Peak discharge (base, 16,500 cfs). No peak above base.

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in First Connecticut and Senond 

Connecticut Lake and Lake Francis.

a No gage-height record; discharge estimated on basis of weather records, recorded ranpe in stage 

when available, powerplant records, and observer's twice-daily chain-gage readings.

Note.--Stage-discharge relation affected by ice Dec. 2-6, Dec. 31 to Jan. 23, Jan. 27 to Feb. 26.
158 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 1957. 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 

1929 (levels by Corps of Engineers).

Average discharge. 15 years, 100 cfs.

Extremes. Maximum discharge during year, 764 cfs Apr. 21 (gage height, 3.96 ft); maximum 

gage height, 5.95 ft Jan. 23 (ice Jam); minimum discharge, 20 cfs Sept. 2.

1939-45, 1948-57: 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 periods of ice effect, which are fair. 

Revisions. WSP 1141: Drainage area.

Rating tables, water year 1956-57, except periods of ice effect (gage 

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

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

1.0 18

1.5 

2.0 

3.0

32

83

163

415

0.8 

1.0 

1.2 

1.5

47

80

2.0 

3.0 

4.0

163

415

780

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

TWal

Mean

Cfsm

In.

Oct.

78

68

72

60

53

47

262

192 

119

94

81

72

69

66

62

59

57

53

49

48

48

48

47

46

44

*43

44

46

44

44

44

2,159

69.6

1.29

1.49

Nov.

74

73

60

53

49

47

46

45 

44

43

44

50

90

68

63

75

85

71

63

60

110

327

155

100

95

95

84

75

70

65

2,379

79.3

1.47

1.64

Dec.

60

*62

58

62

58

57

110

130 

88

84

90

80

74

72

70

73

75

64

62

60

58

57

56

56

56

50

45

53

50

42

40

2,052

66.2

1.23

1.42

Jan.

50

45

42

45

42

40

40

40 

40

40

38

40

38

*37

36

35

34

33

32

32

32

50

300

170

120

100

90

80

75

70

67

1,933

62.4

1.16

1.34

Feb.

64

61

58

56

55

53

52

50 

49

50

48

46

44

43

44

43

42

*42

42

42

40

40

39

39

48

250

200

1,678

59.9

1.11

1.16

Mar.

~~90 130

70

64

58

56

52

50 

51

54

52

50

50

52

60

110

100

78

*68

70

70

84

98

94

79

80

91

94

97

94

QOOo

2,334

75.3

1.40

1.61

Apr.

88

204

179

122

115

190

175

129 

115

109

109

120

130

109

100

108

139

165

269

404

660

460

376

342

290

262

242

218

185

201

6,315

210

3.90

4.37

May

*165

141

130

123

117

111

104

100 

96

127

155

119

144

169

374

273

175

141

123

302

299

190

157

145

122

115

122

111

102

93

87.

4,732

153

2.84

3.27

June

81

130

119

94

*86

77

169

TT7 

93

80

71

71

67

62

58

54

49

45

62

74

54

46

42

49

50

143

86

123

86

70

2,408

80.3

1.49

1.66

July

84

71

60

161

286

162

102

87 

75

71

67

60

52

47

45

46

44

38

35

32

31

154

111

71

53

44

39

41 75

103

65

2,414

77.9

1.45

1.67

Aug.

52

43

46

42

36

33

30

28 

27

152

108

72

*53

44

39

36

33

30

28

27

25

24

22

-21 21

25

27

24

22

22

22

1,214

39.2

0.729

0.84

Sept.

 si 21

50

38

32

30

27

25 

24

22

*22

24

24

24

22

36

55

34

28

30

36

38

176

83

53

42

36

34

31

30

1,148

38.3

0.712

0.79

Calendar year 1956: Max 729 Min 20 Mean 94.7 Cfsm 1.76 In. 23.96

Water year 1956-57: Max 660 Min 21 Mean 84.3 Cfsm 1.57 In. 21.26

Peak discharge (base, 800 cfs).--No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 20, 21, Nov. 24 to Mar. 19 (no gage-height 

record Jan. 6-14, Feb. 5-18; discharge estimated on basis of 2 discharge measurements, weather records, and records for Ammonoosuc River at Bethlehem Junction, N. H., Black River at Coventry, Vt., 

and other stations on nearby streams).
CONNECTICUT RIVER BASIN 159

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 1957.

Gage. Water-stage recorder. Datum of gage is 1,103.99 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers).

Average discharge. 10 years, 139 cfs.

Extremes. Maximum discharge during year, 1,370 cfs Apr. 22 (gage height, 8.32 ft); minimum dally, 7.4 cfs Sept. 11.

1947-57: Maximum discharge, 2,940 efs 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 or no gage-height record, 

which are fair.

Revisions. WSP 1381: Drainage area.

Rating table, water year 1956-57, except periods of Ice effect (gage 

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

2.5 

2.7 

3.0 

3.5 

4.0

5.5

10

20

50

92

4.5 

5.0 

6.0 

7.0 

S.O

150 

2H5 

443 

765 

1,210

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Cfam

In.

Oct.

71

82

92

79

71

61

179

412

228

144

112

93

83

77

71

66

61

57

52

49

48

47

46

46

44

*40

40

42

42

40

39

2,614

84.3

1.12

1.29

Nov.

86

137

93

73

62

56

52

49

47

46

40

46

127

109

86

111

129

101

78

70

100

714

694

297

177

153

145

127

111

100

4,216

141

1.88

2.09

Dec.

78

*85

70

73

6H

68

110

260

180

130

105

110

110

90

85

90

100

90

80

75

70

66

62

58

62

58

50

58

54

48

52

2,689

86.7

1.15

1.33

Jan.

51

50

49

48

48

46

46

46

46

46

45

44

43

42

41

41

42

43

41

40

40

45

200

500

200

150

120

105

90

2,726

87.9

1.17

1.35

Feb.

70

65

60

56

54

52

50

48

47

46

45

4H

41

40

39

39

*39

38

37

36

35

34

34

35

37

39

200

450

1,808

64.6

0.859

0.89

Mar.

270

200

150

130

115

100

90

86

86

10H

90

83

78

83

100

186

270

244

167

*135

119

135

174

186

158

144

169

174

184

182

160

4,549

147

1.95

2.25

Apr.

160

254

456

313

206

277

391

250

198

170

174

182

252

198

159

162

216

263

379

597

995

1,120

688

563

462

358

328

292

235

*242

10,540

351

4.67

5.21

May

197

162

142

132

121

108

96

90

87

96

200

142

136

283

440

594

316

205

163

250

569

409

248

206

162

136

137

121

109

91

83

6,231

201

2.67

3.08

June

72

120

196

 112

85

75

120

175

120

85

65

58

54

52

47

42

36

32

30

42

35

29

23

50

60

160

140

115

105

90

2,425

80.8.

1.07

1.20

July

75

70

60

130

190

350

175

110

93

86

80

70

58

48

46

43

41

37

32

28

- 25

300

550

250

110

75

58

52

75

120

95

3,532

114

1.52

1.75

AUR.

71

61

50

41

33

31

2^

25

23

23

50

45

3<,

H3

25

21

19

17

16

14

12

11

9.4

8.5

B^O

8.0

9.2

10

9.8

9.3

8.6

762.8

24.6

0.327

0.38

Sept.

8.1

10

15

19

15

13

11

10

9.0

*8.3

7.4

8.6

9.0

8.8

8.8

8.8

HI

19

13

12

18

20

132

108

47

31

23

19

18

16

666.8

22.2

0.295

0.33

Calendar year 1956: Max 1,530 Mln 8.6 Mean 143 cfam 1-90 In. 25.93

Water year 1956-57: Max 1,120 Mln 7.4 Mean 117 Cfsm 1.56 In. 21.15

Peak discharge (base, 1,000 cfs). --Nov. 22 (7:30 to 8:30 p.m.) 1,040 cfs (7.64 ft)} Apr. 22 (2 to

3 a.m.) 1,370 cfs (8.32 ft).
160 CONNECTICUT RIVER BASIN

Moose River at St. Johnsbury, Vt.

Loeation.--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 ml.

Re_eords available. August 1928 to September 1957.

Gage. Water-stage recorder. Altitude of gage Is 585 ft (from topographic map). Prior to 

Nov. 16, 1934, chain gage at site a quarter of a mile upstream at different datum.

Average discharge .--29 years, 221 cfs.

Extremes . Maximum discharge during year, 1,690 cfs Apr. 22 (gage height, 3.84 ft); maximum gage height not determined; minimum discharge, 11 cfs sometime during period of no 

gage-height record Aug. 24 to Sept. 11.

1928-57: 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 fair.

Revisions (water years). WSF 1231: 1929-30, 1931-34(M) . WSP 1381: Drainage area.

Rating table, water year 1956-57, except period of ice effect (gage

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

(Shifting-control method used Oct. 10, Nov. Z, June 3, 4, 7-9, 26-

29, July 4, 8, 9, 25, 30, Sept. 24)

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

2.1 54

2.5 94

2.9 165

3.2 255

3.4 360

3.5 440

3.6 570

3.7 790

3.8 1,450

1.4 

1.7

2.0 

2.5

Note. Same as preceding table above 2.5 ft.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

88

113

120

115

100

88

205

500

293

175

142

125

113

105

100

94

87

82

76

72

70

69

68

67

64

62

60

*60

61

59

58

3,491

113

0.883

1.01

Nov.

86

165

129

104

92

85

78

74

71

68

61

70

133

147

118

123

144

133

110

94

138

766

1,110

600

300

210

180

160

150

140

5,837

195

1.52

1.70

Dec.

*130

125

120

115

110

110

160

330

250

200

155

160

155

140

125

130

150

130

120

110

100

95

92

86

90

84

75

82

80

73

64

3,946

127

0.992

1.15

Jan.

75

73

72

70

68

68

68

67

67

66

65

64

63

61

60

61

61

62

60

5_8

58

65

*600

350

240

180

120

105

90

80

77

3,274

106

0.828

0.95

Feb.

74

71

69

67

66

64

63

61

60

60

59

58

58

57

56

55

55

*54

54

54

54

53

53

52

52

70

300

500

-

2,349

83.9

0.655

0.68

Mar.

350

200

150

130

120

110

105

100

105

110

100

94

100

105

140

350

400

336

278

*214

202

244

291

300

264

241

255

255

260

264

234

6,407

207

1.62

1.86

Apr.

227

358

528

452

368

442

570

493

360

300

286

282

330

342

306

273

273

324

424

619

1,030

1,450

1,030

886

670

528

440

400

342

324

14,657

489

3.82

4.26

May

*306

252

214

196

182

165

148

136

127

127

,207

208

190

370

550

700

460

300

250

330

700

600

350

300

240

200

190

170

155

135

125

8,583

277

2.16

2.49

June

113

125

232

168

*129

111

173

220

154

118

97

87

84

77

71

63

54

47

45

55

56

43

37

76

90

225

204

172

159

136

3,421

114

0.891

0.99

July

111

102

88

191

286

476

260

159

140

129

120

105

86

71

68

64

62

56

48

42

37

399

742

347

150

111

87

78

98

163

132

5,008

162

1.27

1.46

Aug.

97

77

63

61

54

46

42

37

35

39

66

70

50

41

35

*31

28

26

23

21

18

16

14

13

IS.

12

13

15

15

14

13

1,097

35.4

0.277

0.32

Sept.

12

12

20

26

22

19

16

14

13

12

*12

12

13

13

12

14

22

33

26

24

31

40

126

151

93

58

45

40

33

33

997

33.2

0.259

0.29

Calendar year 1956: Max 2,530 Min 15 Mean 225 Cfsm 1.76 In. 23.93

Water year 1956-57: Max 1,450 Min 12 Mean 162 Cfsm 1.27 In. 17.16

Peak discharge (base, 1,700 cfs). No peak above base.

* Discharge measurement made on this day.

Note.--No gage-height record Jan. 6-15, Feb. 7-17, Feb. 28 to Mar. 8, May 13-51, Aug. 24 to 

Sept. 11; discharge estimated on basis of 1 discharge measurement, weather records, recorded range 

in stage when available, and records for Moose River at Victory, Vt., Ammonoosuc River at Bethlehem Junction, N. H., Upper Ammonoosuc River near Groveton, N. H., and stations on other nearby 

streams. Stage-discharge relation affected by ice Nov. 27 to Mar. 16.
CONNECTICUT RIVER BASIN 161 

Passumpsic River at Passumpsic, Vt.

Location. Lat 44°21'55", long 72 C 02'20", on right bank 0.7 mile upstream from Andrick 

Brook (revised) and 1 mile downstream from dam and village of Passumpsic, Caledonia 

County.

Drainage area. 436 sq mi.

Records available. October 1928 to September 1957. October 1928 monthly discharge only, 

published in WSP 1301.

Gage. Water-stage recorder. Altitude of gage is 490 ft (from topographic map). 

Average discharge. 29 years, 727 cfs.

Extremes. Maximum discharge during year, 4,460 cfs Apr. 22 (gage height, 8.41 ft); minimum 

daily, 79 cfs Aug. 31.

1928-57: 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. Flow regulated by 

powerplants above station.

Revisions (water years). WSP 781: 1933(M). WSP 871: Drainage area. WSP 1231: 1929, 

1930-31(M).

Rating tables, water year 1956-57, except periods of Ice effect (gage 

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

Oct. 1 to Apr. 21 Apr. 22 to Sept. 30

2.2

2.5 

3.0

186

291

535

5.0 

8.0

1,880

4,130

1.5 

1.9 

2.2 

2.5

69

132

193

292

3.0 535

5.0 1,880

8.0 4,130

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

IB

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

Cfsra

In.

Oct.

305

386

411

385

328

288

1,170

1,540 

893

612

502

440

390

385

346

334 

323

302

272

270

260

262

268

265

250

243

232

*242

246

240

214

12,604

407

0.933

1.08

Nov.

375

584

433

330

312

291

273

270 

255

248

220

260

545

502

372

420 

460

430

333

291

562

2,570

1,730

840

600

590

610

550

470

430

16,156

539

1.24

1.38

Dec.

380

*430

450

370

360

350

560

1,050 

750

600

550

500

480

460

440

450 

460

430

400

370

360

355

350

345

340

32 0

280

320

320

270

250

13,350

431

0.989

1.14

Jan.

300

280

270

260

255

250

245

240 

235

230

230

220

220

*230

210

205 

200

200

195

190

190

230

2,000

1,800

1,100

800

650

570

510

470

440

13,425

433

0.993

1.15

Feb.

440

420

400

405

370

355

360

345 

335

325

325

315

300

300

290

280

280

275

*270

265

260

260

260

260

260

310

1,700

1,800

11,765

420

0.963

1.00

Mar.

1,400

1,050

850

650

590

530

500

470 

500

520

490

460

480

500

660

1,500 

1,400

1,000

780

720

*680

860

940

940

844

778

840

850

844

844

735

24,205

781

1.79

2.06

Apr.

741

1,430

1,690

1,130

984

1,620

1,780

1,190 

1,OOO

879

886

942

1,220

991

810

824 

1,080

1,320

1,680

2,420

3,750

5,870

2,570

2,190

1,840

1,570

1,450

1,310

1,130

*1,220

45,517

1,517

3.48

3.88

May

1,040

872

765

735

687

628

590

535

513

513

970

723

755

1,200

2,080

2,090 

1,280

935

759

1,450

2.450

1,520

1,100

942

765

669

681

634

584

513

486

29,464

950

2.18

2.51

June

450

553

*900

590

491

420

830

810 

552

450

375

348

339

305

292

288 

248

193

213

336

271

182 186"

365

311

1.050

750

784

612

472

13,946

465

1.07

1.19

July

405

407

325

946

1,400

1,520

747

657 

518

470

425

385

305

266

317

276 

253

223

234

146

157

1,710

1,960

871

510

386

270

290

357

783

550

18,069

585

1.34

1.54

Aug.

430

350

290

270

220

190

160

140 

130

150

500

400

320

270

230

197 

166

155

178

170

136

116

120

92

87

132

130

143

131

114

79_

6,196

200

0.459

0.53

Sept.

118

88

167

187

173

134

119

99 

*144

109

100

95

125

86

105

151 

192

178

136

154

137

177

749

662

326

234

194

169

153

158

5,596

187

0.429

0.48

Calendar year 1956: Max 5,900 Min 98 Mean 684 Cfsra 1.57 In. 21. 33

Water year 1956-57 : Max 3,870 Min 79 Mean 576 Cfsra 1.32 In. 17.91

Peak discharge (base, 5,000 cfs). No peak above base.

* Discharge measurement made on this day.

Note. No gage-height record July 31 to Aug. 15; discharge estimated on basis of weather records, 

recorded range in stage, and records for East Branch Passumpsie River near East Haven, Moose River 

at St. Johnsbury, and Moose River at Victory. Stage-discharge relation affected by lee Nov. 24 to 

Mar. 24, Mar. 27.
162 CONNECTICUT RIVER BASIN

Ammonoosuc River at Bethlehem Junction, N. H.

Location. Lat 44°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. 87.6 sq mi.

Records available. August 1939 to September 1957.

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. 18 years, 209 cfs.

Extremes. Maximum discharge during year, 2,280 cfs Apr. 21 (gage height, 6.17 ft); maximum gage height, 6.23 ft Jan. 23 (ice jam); minimum discharge, 26 cfs Sept. 15, 16.

1939-57: 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 tables, water year 1956-57, except periods of ice effect (gage 

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

Oct. 1 to Jan. 23 Jan. 24 to Sept. 30

1.3 

1.5 

2.0

53

73

140

2.5 

3.0

250

395

Note. Same as following 

table above 3.0 ft.

0.99

1.0

1.2

1.5

2.0

75

150

2.5 

3.0 

4.0 

5.0 

6.0

255

395

740

1,310

2,110

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

110

110

114

104

99

90

253

262

164

132

118

108

104

100

95

91

88

84

81

77

76

75

77

147

*104

90 

84 

81

78 

75

3,344

108

1.23

1.42

Nov.

101

166

112

97

89

84

81

78

77

74

68

76

118

92

88

108

118

104

85

82

125

868

318

171

134

154 

 *151 

127

118 

108

4,172

139

1.59

1.77

Dec.

91

96

82

99

82

125

250

326

195

147

129

177

164

126

130

151

158

126

84

121

110

101

95

97

101

80 

65 

92

86 

62

60

3,808

123

1.40

1.62

Jan.

86

80

75

77

74

72

72

*72

69

70

67

69

66

64

63

63

64

64

63

62_

62

*74

1,150

231

178 

135 

123

117 

100

85

4,093

132

1.51

1.74

Feb.

82

80

78

78

76

75

74

71

68

70

66

*64

62

60

60

59

59

58

57

*56

56

54

55

55

55

100 

570 

311

"

2,609

93.2

1.06

1.11

Mar.

. 183

143

112

95

86

94

92

83

89

111

88

83

84

92

111

226

198

*135

116

112

106

117

130

120

105

101 

105 

101

106 

106

94

3,524

114

1.30

1.50

Apr.

95

298

274

155

135

190

224

152

135

122

125

150

216

143

122

123

157

178

276

565

1,680

647

697

544

479 

590 

548

*431

601

10,866

362

4.13

4.61

May

365

281

238

213

202

183

172

179

195

206

253

195

335

450

602

790

374

286

238

414

540

374

297

271

226

202 

238 

231

231

187 

170

9,138

295

3.37

3.88

June

155

176

*213

163

145

128

197

174

136

117

106

102

104

94

88

80

73

69

74

104

76

65

60

79

71

129 

106 

130

153

147

3,514

117

1.34

1.49

Jily

117

120

104

417

380

322

183

142

153

206

176

154

123

105

105

102

102

87

78

70

67

315

302

163

183

135 

108 

102

128

143 

110

4,999

161

1.84

2.12

Aug.

98

85

75

70

68

64

60

56

53

55

65

*56

51

48

46

45

43

40

39

38

37

36

34

33

32.

33 

38 

36

33

32 

32

1,531

49.4

0.564

0.65

Sept.

30

30

38

40

32

30

30

30

*29

28

28

29

28

28

26

28

41

34

30

30

32

33

122" 371

68

54 

47 

44

41

40

1,471

49.0

0.559

0.62

Calendar year 1956 : Max 2,170 Min 38 Mean 202 Cfsm 2.31 In. 31.46

Water year 1956-57: Max 1,680 Min 26 Mean 145 Cfsm 1.66 In. 22.53

Peak discharge (base, 2,700 cfs). No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 5-7, Dec. 27 to Jan. 15, Jan. 17-20, 23, 

Jan. 30 to Feb. 19, Feb. 26, 27.
CONNECTICUT RIVER BASIN 163

Ammonoosuc River near Bath, N. H.

Location. Lat 44°09'15", long 71°59'10", on left bank 0.4 mile downstream from Wild 

Ammonoosuc River and If miles downstream from Bath, (Jrafton County.

Drainage area. 395 sq mi.

Records available.--September 1935 to September 1957.

Gage. Water-stage recorder. Datum of gage is 454.14 ft above mean sea level, datum of 

1929 (levels by Connecticut River Power Co.).

Average discharge. 22 years, 672 cfs.

Extremes.--Maximum discharge during year, 5,810 cfs Jan. 23 (gage height, 7.73 ft); maximum gage height, 9.34 ft Jan. 23 (ice jam); minimum daily discharge, 35 cfs Sept. 15.

1935-57: Maximum discharge, 27,900 cfs Mar. 18, 1936 (gage height, 15.40 ft), from 

rating curve extended above 13,000 cfs; minimum daily, that of Sept. 15, 1957.

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. WSP 871: Drainage area.

Rating tables, water year 1956-57, except periods of Ice effect (gage 

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

Oct. 1 to Feb. 26 Feb. 27 to Sept. 30

1.8 169

2.0 212

2.5 340

3.0 525

4.0 1,060

5.0 1,900

5.5 2,440

1.3 

1.5

2.5

187

335

3.0 

4.0 

5.0 

6.0 

6.5

545

1,080

1,900

3,100

3,800

Discharge, Ln cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16 

17

18

19

£0

21

22 

23 

24

25

26

27

£8

£9 

30

31

Total

Mean

Cfsm

In.

Oct.

334

337

329

315

298

280

462

800 525"

409

355

326

312

301

296

285 

272

249

245

233

224

233 

233 

257

298

254

*230

221

235

212

208

9,568

309

0.78£

0.90

Nov.

240

445

377

312

285

264

252

247

237

237

212

217

290

334

282

282 

312

312

282

242

311

2.040 

1,380 

720

450

470

480

410

370

350

12,642

421

1.07

1.19

Dec.

270

280

*270

280

290

285

500

950

650

460

400

520

560

480

430

480 

520

450

300

380

370

340 

310 

310

340

340

250

300

270

230

200

12,015

388

0.982

1.13

Jan.

260

280

240

250

240

235

230

230

225

225

220

220

215

210

205

205 

205

205

205

205

200,

20"0 

2.400 

*2,000

840

640

480

440

400

360

310

12,780

412

1.04

1.20

Feb.

295

285

280

280

260

255

250

255

260

240

240

225

220

210

220

220 

210

210

*220

215

200

210 

190 

190

180

250

2.000

1,74C

-

9,810

350

0.886

0.92

Mar.

960

640

500

360

310

310

310

300

310

370

350

315

300

382

586

1.280 

1,230

805

605

605

576

695 

775 

700

581

*540

545

522

522

514

442

17,240

556

1.41

1.62

Apr.

432

868

1,200

700

615

868

1,100

785

680

595

630

655

1,090

780

600

576 

640

740

900

1,370

5,180,

27355 

1,530 

1,610

1,460

1,160

1,350

1,320

1,140

1,200

32,164

1,072

2.71

3.03

May

1,000

780

665

600

558

514

*504

156" 432

509

630

581

564

1,220

1,140

1,990 

1,120

830

700

1,050

2,220

1,380 

1,020 

858

735

625

690

665

635

536

478

25,715

830

2.10

2.42

June

428

455

670

500

446

370

496

586

428

332

*289

270

267

250

213

208 

182

158

149

190

205

155 

142 

152

208

420

482

990

630

572

10,883

363

0.919

1.02

July

455

402

328

933

1.340

1,290

715

500

410

595

550

455

346

335

390

328 

276

264

224

174

190

238 

727 

468

398

299

264

216

289

513

386

14,303

461

1.17

1.35

A lg .

328

*264

203

205

174

162

170

144

151

140

153

256

a!70

a!30

a!05

a90 

a93

a85

a85

a92

a78

a76 

a70 

52_

60

63

73

65

61

72

60

3,930

127

0.322

0.37

Sept.

58

53

76

70

60

65

73

63

87

76

83

61

52

49

35

41 

*97

52

80

64

61

79 

1.270 

72£f 322'

227

15:;

13«

127

112

4,512

150

0.380

0.4!!

Calendar year 1956: Max 5,900 Mln 110 Mean 639 Cfsm 1.62 In. 22.00

Water year 1956-57: Max 3,180 Mln 35 Mean 454 Cfsm 1.15 In. 15.57

Peak discharge (base, 6,500 cfs). No peak above base.

* Discharge measurement made on this day.

a Doubtful or no gage-height record; discharge estimated on basis of recorder graph, weather 

records, and records for station at Bethlehem Junction.

Note. Stage-discharge relation affected by Ice Nov. 24 to Feb. 27, Mar. 2-9, 11-13 (ro gageheight record Jan. 3-15j discharge estimated on basis of weather records, recorded range In stage, 

and records for station at Bethlehem Junction).
164 CONNECTICUT RIVER BASIN

Connecticut River at Wells River, Vt.

Location.--Lat 44°09 I 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 1957. October and November 1949 monthly 

discharge only, published in WSP 1301.

Gage. Water-stage recorder. Datum of gage is 399.75 ft above mean sea level, datum of

1 Q9Q

Average discharge. 8 years, 4,831 cfs (adjusted for storage).

Extremes . Maximum discharge during year, 19,600 cfs Apr. 22 (gage height, 7.95 ft); minimum daily, 345 cfs Aug. 25.

1949-57: Maximum discharge, 54,000 cfs Mar. 27, 1953 (gage height, 15.96 ft); minimum daily, 337 cfs Aug. 7, 1955.

Remarks . --Records good. Flow regulated by powerplants, by First Connecticut and Second 

Connecticut Lakes, Lake Francis, Moore Reservoir and Comerford Station Pond (see p. 

and other reservoirs (combined usable capacity, about 14-f billion cubic feet).

Rating table, water year 1956-57, except periods of loe effect (gage

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

(Stage -discharge relation indefinite Oct. 8, 9. Shifting-control 

method used Oct. 1O, 11)

1.0 

1.4 

2.0 

3.0

340

600

1,240

2,660

4.0 

5.0 

7.0 

7.5

4,730

7,250

15,300

17,600

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Itatal

Mean

(t)

Oct.

2,000

2,560

2,930

4,000

2,97O

2,330

2,590

6,000

6.800

5,310

4,450

2,920

2,160

1,810

2,520

3,470

3,810

3,620

2,280

2,200

1,060 

1,930

3,190

3,210

2,970

2,2YO

*2,200

1,060

1,500

2,200

2,270

90,59O

2,922

-620

Nov.

2,330

2,490

2,490

1,960

1,770

2.80O

2,380

2,240

2,150

2,150

1,080

998

2,140

2,880

2,840

2,380

2,350

2,000

2,180

3,430

3,490 

9,490

lg.800

10,600

2,720

3,640

4,800

4,640

4,550

4,290

106,058

3,535

-131

Dec.

2,820

1,840

*3,030

2,970

3,660

3,720

4,160

3,580

4,420

5,640

4,520

5,210

5,340

4,580

2,910

2,730

4,520

4,380

4,750

4,380

3,720 

2,350

2,360

2,140

1,720

3,080

3,120

3,120

1,590

1,540

o i oO '

105,800

3,413

-149

Jan.

2,300

g3,600

g3,700

g3,100

g2,090

gl,610

gl,830

g2,590

g2,490

g2,430

g2,350

gl,700

gl,460

g2 , 000

g3,200

4,200

2,500

2,100

1,400

656

1,500 

2,300

6,800

7,880

7,340

7,760

5,870

5,780

5,210

4,820

4,380

106,926

3,449

-493

Feb.

4,180

2,160

1,650

3,390

4,590

4,140

3,750

3,560

2,360

2,160

3,040

4,100

3,850

3,350

3,350

2,840

1,220

3,150

*3,720

3,770

3,750 

3,410

2,060

1,560

2,580

3,640

7,270

7,050

-

____ ___

95,650

3,416

-1,161

Mar.

5,920

5,330

3,920

6,000

5,920

7,100

6,890

6,280

3,360

1,65.0

4,180

5,780

5,190

5,210

6,200

5,560

4,590

6,360

7,100

7,550

7,430 

7,250

4,990

4,380

6,770

*7,370

6,740

6,800

6,420

5,350

2,190

175,780

5,670

-1,225

Apr.

4,430

6,140

7,850

,730

,280

,900

,160

,370

,670

,520

,580

,220

,240

,550

,890

,280

,640

,760

7,940

8,500

10,700 

17.500

16,400

13,500

12,000

10,600

6,200

5,850

7,240

7,940

245,180

8,173

+1,869

May

6,860

6,580

4,860

2,330

1,460

5,470

*4,660

3,940

3,790

3,490

2,610

1,440

4,150

5,050

6,350

10,600

8,500

5,350

2,200

7,910

13,800 

11,000

8,480

6,650

5,280

2,860

5,440

5,160

5,080

2,030

4,320

167,700

5,410

+1,120

June

2,160

1,280

4,630

4,570

3,680

2,460

3,810

3,310

1,750

3,270

*3,210

4,450

2,240

1,860

1,530

805

871

1,370

1,400

1,420

1,370 

1,290

758

1,510

2,180

3,880

4,710

5.400

3,210

1,460

75,544

2,518

+252

July

2,140

2,590

2,510

3,270

6,820

8,060

6,600

4,840

4,410

3,310

2,950

3,310

1,950

1,260

2,050

2,360

2,120

1,760

1,740

1,570

800 

3,680

8,090

6,380

4,750

3,410

1,850

1,010

1,940

4,090

5,300

106,920

3,449

+367

Aug.

5^,980

2,300

1,740

945

1,220

2,180

1,990

1,680

2,090

1,700

919

1,940

2,540

1,930

1,820

2,030

1,760

821

934

1,650

1,660 

1,740

1,700

869

545

591

1,190

1,520

1,040

1,200

62 7

48,651

1,569

-317

Sept.

375

370

753

1,540

1,850

1,420

714

365

575

1,360

1,520

1,350

1,290

699

396

577

*1,410

1,480

1,260

1,360

810 

457

3,160

3,850

3,640

2,630

1,710

1,680

1,070

838

40,509

1,350

-134

Adjusted for change in reservoir contents

Mean 

Cf am

In.

2,302 

0.871 

1.00

3,404 

1.29 

1.44

Calendar year 1956 : 

Water year 1956-57 :

3,264 

1.23 

1.42

2,956 

1.12 

1.29

2,255

0.853 

0.89

4.446 

1.68 

1.94

10,040 

3.60 

4.24

6,530 

2.47 

2.85

Observed

Max 22,700 Min 335 Mean 4,351 

Max 17,300 Min 345 Mean 3,741

2,771 

1.05 

1.17

3,816 

1.44 

1.66

1,252 

0.474 

0.55

1,216 

0.460 

0.51

Adjusted

Mean 4,566 Cfsm 1.73 In. 23.50 

Mean 3,692 Cfsm 1.40 In. 18.96

Peak discharge (base, 23,000 cfs). No peak above base.

* 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, and Moore Reservoir and Comerford Station Ford.

g Computed from twice-daily Telemark readings.

Note. Stage-discharge relation affected by Ice Dec. 31 to Jan. 4, Jan. 12, 14-19, 21-23, Feb. 12, 

13.
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 mile-? upstream 

from mouth.

Drainage area.--98.4 sq mi.

Records available.--August 1940 to September 1957.

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 .--17 years, 140 cfs.

Extremes.--Maximum discharge during year, 570 cfs Nov. 22 (gage height, 3.61 ft); maximum 

gage height, 4.72 ft Jan. 31 (affected by ice); minimum discharge, 13 cfs Sept. 16, 17; 

minimum daily, 13 cfs Sept. 16.

1940-57: 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 good except those for period of ice effect, 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: Drainage area. WSP 1201: 1942(P), 1944-45(M), 

IMF-47(P), 1948 (M), 1950.

Rating tables, water year 1956-57, except period of Ice effect (gage 

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

1.6

1.7 

1.9 

2.2

Oct. 1 to Jan. 31

2.5 

3.0 

3.5

icond) 

Feb. 1 to Sept. 30

31

39

59

102

168

311

517

1.3

1.4

1.6 

1.8 50

2.0 

2.5 

3.0 

3.5

175

311

517

Discharge, in cubic feet per second, water year October 1956 to September 1S57

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

Cfsm

In.

Oct.

48

49

61

57

55

50

156

168

Too

82

72

66

61

60

57

54

52

51

48

49

48

46

46

46

43

42

*43

44

43

42

4i

1,880

60.6

0.616

0.71

Nov.

56

67

54

50

47

43

42

41

40

42

37

44

65

58

51

49

49

48

44

46

65

394

T9T

110

83

87

87

75

70

60

2,198

73.3

0.745

0.83

Dec.

42

5T

*49

51

47

54

95

180

120

105

92

100

100

86

84

90

100

80

64

80

75

70

68

70

78

68

51

70

65

53 

50

2,388

77.0

0.783

0.90

Jan.

55

52

55

58

53

49

55

53

50

47

43

44

42

40

40

40

38

36

33

31

35

45

340

*210

160

135

120

105

95 

35

80

2,324

75.0

0.762

0.88

Feb.

77

74

74

75

68

64

67

70

60

68

58

52

58

62

52

50

54

54

51

*50

46

43

4T

45

50

85

300

210

-

2,064

73.7

0.749

0.78

Mar.

160

130

115

100

90

94'

90

87

92

84

78

80

85

120

170

270

220

170

135

125

129

161

185

177

148

*142

144

142

146 

146

137

4,152

134

1.36

1.57

Apr.

135

231

264

194

170

229

264

212

189

170

166

166

220

187

161

152

187

220

252

299

378

332

264

230

202

185

175

166

157

194

6,351

212

2.15

2.40

May

166

142

127

121

111

106 *ioo

93

88

87

102

93

109

142

164

207

148

125

107

262

398

24T

189

164

131

113

125

115

102

90

85

4,351

140

1.42

1.64

June

79

91

105

83

74

67

118

102

80

67

*59

58

56

49

50

46

40

38

38

42

34

30

31

54

55

185

111

T52" 254

139

2,417

80.6

0.819

0.91

July

104

80

63

115

174

163

100

79

67

64

57

53

44

41

58

50

39

38

34

50

31

40

73

47

43

38

33

45

46 

56

40

1,945

62.7

0.637

0.74

Aug.

37

34

30

27

25

25

25

22

22

23

39

«

36

29

26

25

23

21

21

20

19

18

17

IB- 16

16

21

19

17

16 

16

750

24.2

0.246

0.28

Sept.

14

16

38

49

47

46

41

39

32

22

19

18

17

15

14

13

*I5

17

16

15

21

22

~63 117

35

25

21

20

18 

16

861

28.7

0.292

0.33

Calendar year 1956 : Max 1,130 Min 24 Mean 133 Cfsm 1.35 In. 18.35

Water year 1956-57 : Max 398 Min 13 Mean 86.8 Cfsm 0.882 In. 11.97

Peak discharge (base, 980 cfs). No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 24 to Mar. 2o.
CONNECTICUT RIVER BASIN

Ompompanoosue 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 Avery 

Brook, and 0.3 mile downstream from Union Village Reservoir.

Drainage area. 130 sq mi.

Records available. September 1940 to September 1957.

Gage.--Water-stage recorder. Altitude of gage is 435 ft (from topograpMc map).

Average discharge.--17 years, 199 cfs (adjusted for storage).

Extremes.--Maximum discharge during year, 740 cfs Jan. 24 (gage height, 5.61 ft); minimum, 

16 cfs Sept. 1, 2; minimum daily, 16 cfs Sept. 1,2.

1940-57: 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.

Remarks.--Records good except those for periods of ice effect, which are fair. Flow regu- 

 lated by Union Village Reservoir (see p. 233) since October 1949. Some regulation by 

Lake Fairlee.

Rating tables, water year 1956-57, except periods of Ice effect (gage 

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

Oct. 8 to Sept. 30

3.5 

4.0

2.9 

3.1 

3.3

3.6 91

4.0

5.0 

6.0

177

495

940

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

(t)

Oct.

107

101

101

96

96

90

163

*167

120

103

96

89

86

83

83

78

75

72

69

66

64

63 

64

68

63

60

60

60

*60

59

"cTT bU

2,622

84.6

-0.67

Nov.

72

83

74

68

64

62

60

60

59

51

57

60

83

77

70

69

68

70

69

75

101

m172

133

125

120

115

110

105

2,866

95.5

+4.28

Dec,

100

95

91

89

87

*85

95

130

172

167

152

170

209

217

214

209

203

198

140

118

160

185 

177

172

172

170

138

115

115

110

110

4,565

147

-1.87

Jan.

105

105

105

105

105

100

100

99

98

97

*96

93

91

90

87

84

81

78

76

73

71

160

520

557^

360

320

261

214

210

200

4,791

155

+6.24

Feb.

190

182

175

167

157

150

140

128

120

116

110

105

100

93

*87

83

80

78

77

75

74

70 

70

68

68

75

244

340

.

3,422

122

+7.61

Mar.

327

317

228

185

180

175

145

128

130

»133

130

133

135

200

291

402

436

389

355

264

217

*273 

358

358

317

285

282

282

282

314

324

7,975

257

-10.5

Apr.

298

311

358

348

440

478

470

382

355

324

308

298

321

282

252

249

273

291

314

327

351

301 

264

240

225

*217

209

198

fo"9 185

9,078

303

-4.59

May

180

160

150

145

133

124

114

106

100

9§

114

103

112

142

187

157

120

106

98

265

355

223 

185

154

128

118

216

162

135

116

*135

4,639

150

+0.07

June

130

124

142

108

94

85

122

105

85

74

68

64

63

56

54

50

43

38

35

40

35

30 

30

49

74

284

138

378

225

174

2,997

99.9

-0.04

Jily

140

106

89

173

274

249

157

*150

110

101

83

75

63

60

128

78

62

54

47

42

46

80 

91

60

62

49

43

42

50

123

77

2,964

95.6

-0.34

Aug.

80

54

45

40

36

33

30

29

27

30

45

46

35

29

27

*26

27

24

22

22

20

18 

18

18

17

18

22

18

18

17

17

908

29.3

-0.26

Sept.

M

16

20

24

19

*18

18

19

18

18

18

20

20

19

19

21

26

27

22

20

20

25 

217

*82

54

46

37

34

30

30

973

32.4

+0.04

Adjusted for change in contents In Union Village Reservoir

Mean 

Cfsm 

In.

83.9 

0.645 

0.74

99.8 

0.768 

0.86

Calendar year 1956: 

Water year 1956-57:

145 

1.12 

1.29

161 

1.24 

1.43

130 

1.00 

1.04

247 

1.90 

2.19

298 

2.29 

2.56

150 

1.15 

1.33

Observed

lax 1,700 Mln 31 Mean 201 

Hax 537 Min 16 Mean 131

99.9 

0.768 

0.86

95.3 

0.733 

0.85

29.0 

0.223 

0.26

32.5 

0.250 

0.28

Adjusted

Mean 202 Cfrra 1.55 In. 21.08 

Mean 131 Cfrra 1.01 In. 13.69

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Union Village Reservoir. 

Note.--Stage-discharge relation affected by ice Nov. 26 to Dec. 7, Dec. 28 to Jan. 24, Jan. 26, 

27, Jan. 30 to Feb. 1, .Feb. 3, 6, 9, 11-13, 15-17, 19-22, 24, 28, Mar. 4-6, 11.
CONNECTICUT RIVER BASIN 167

Ayers Brook at Randolph, Vt.

Location. Lat 43°56'05", long 7S°39'30", on right bank 55 ft upstream from bridge on

State Highway 12, just north of village limits of Randolph, Orange County, C.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 1957.

Gage. Water-stage recorder. Datum of gage is 632.75 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers).

Average discharge. 18 years, 46.6 cfs.

Extremes.--Maximum discharge during year, about 420 cfs Jan. 23; maximum gage height, 

3.43 ft Feb. 27 (ice Jam); minimum daily, 3.8 cfs Sept. 14.

1939-57: 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 periods of ice effect or backwater from 

beaver dams, which are fair.

Rating tables, water year 1956-57, except periods of Ice effect or backwater from 

beaver dams (gage height, In feet, and discharge, In cubic feet per second)

Oct. 1 to Feb. 26 Feb. 27 to Sept. 30

0.5

.9

1.2

1.5 73

2.0 129

2.5 212

.7

3.0

4.6

6.7

17

1.0 32

1.5 74

2.0 129

2.5 212

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

15

*14

16

15

15

14

12

42

28

24

22

21

20

20

19

18

18

17

16

16

16

15

15

15

14

14

14

14

13

*T3

13

598

19.3

0.633

0.73

Nov.

16

17

15

14

14

13

13

12

12

12

11

T3

20

16

15

14

14

14

13

13

29

105

43

28

24

27

27

26

25

23

638

21.3

0.698

0.78

Dec.

19

23

20

*22

20

27

51

69

49

43

39

48

59

49

43

50

54

51

38

45

40

39

39

39

40

32

26

38

34

24

17

1,187

38.3

1.26

1.45

Jan.

21

20

21

22

21

19

20

20

19

19

17

18

18

16

16

16

15

14

13

12

13

15

200

110

85

75

65

56

50

45

41

1,112

35.9

1.18

1.36

Feb.

39

35

33

35

32

25

27

27

23

26

21

*14

20

23

ZO

20

21

20

20

18

17

15

17

16

17

30

160

80

-

851

30.4

0.997

1.04

Mar.

6O

51

45

40

35

36

35

34

35

33

30

30

32

45

SO

101

70

58

*56

54

*60

69

70

63

56

54

54

51

51

50

47

1,585

51.1

1.68

1.93

Apr.

46

84

69

58

58

92

84

71

69

64

62

65

66

60

54

54

58

62

68

73

78

66

*56

52

49

47

45

42

40

49

1,841

61.4

2.01

2.24

May

41

36

35

34

32

30

28

26

24

26

32

28

34

34

55

40

32

30

28

86

81

54

46

50

39

36

42

35

31

*28

31

1,184

38.2

1.25

1.44

June

28

29

28

25

22

21

38

26

22

19

17

16

16

14

14

12

1O

9.6

12

12

9.3

8.4

8.4

18

36

69

31

67

46

34

717.7

23.9

0.784

0.88

July

30

24

21

32

58

43

35

55

35

30

27

*25

22

23

46

27

22

19

16

15

18

30

27

20

20

16

13

13

16

25

17

8 2O

26.5

0.869

l.OO

Aug.

17

T3

11

9.9

9.9

9.0

8.4

7.6

7.6

9.0

12

15

12

10

*7.6

7.O

6.6

6.2

6.0

5.8

5.2

5.0

5.0

4.6

4.4

5.0

6.0

5.6

5.0

4.8

4.7

245.9

7.93

0.260

0.3O

Sept.

4.5

4.3

5.6

9.0

6.4

5.4

4.7

4.3

*4.1

4.0

3.9

3.9

4.0

3.8

3.9

4.0

5.0

5.4

4.5

4.0

4.2

4.5

21

*13

10

7.0

6.2

5.6

5.0

4.7

175.9

5.86

0.192

0.21

Calendar year 1956 : Max 496 Mln 3.5 Mean 42.0 Cfsm 1.38 In. 18.75

Water year 1956-57: Max 200 Mln 3.8 Mean 3O.O Cfsm 0.984 In. 13. 33

Peak discharge (base, 350 cfs). Jan 23 (about 3 p.m.) about 420 cfs._____________________^

* Discharge measurement made on this day.

Hote.--Stage-discharge relation affected by Ice Nov. 24, 30, Dec. 1, 3, 9, 10, 14, IS, 26, 27, 

Dec. 31 to Mar. 15. Backwater from beaver dams Aug. 9 to Sept. 30.
168 CONNECTICUT RIVER BASIN 

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 ml.

Records available.--June 1915 to September 1957. 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. 42 years, 1,194 cfs.

Extremes.--Maximum discharge during year, 11,100 cfs Jan. 23 (gage height, 10.52 ft); minimum, 111 cfs Sept. 15; minimum daily, 120 cfs Sept. 14.

1915-57: 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 daily, 

64 cfs Aug. 4, 1918.

Remarks. Records good except those for periods of ice effect or doubtful gage-height recorcTT which are fair. Some diurnal fluctuation at low flow caused by powerplant above 

station.

Revisions (water years). WSP 756: Drainage area. WSP 781: 1928(M). WSP 1031: 1916(m), 

T5Z5~. WSP 1301: I9~16-£6(M), 1929(M).

Rating tables, water year 1956-57, except periods of Ice effect (gage 

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

Oct. 1 to Jan. 23 Jan. 24 to Sept. 3O

3.2 

3.5 

4.0 

4.5

267

378

620

940

5.0 

6.0 

8.0 

9.0

1,340 

2,400 

5,630 

7,3OO

2.7 

3.0

3.5 

4.0

113

195

378

620

5.0 1,390

6.0 Z,44O

8.0 5,630

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

*412

386

399

438

420

403

1,140

1.650

1,040

812

686

6O9

565

535

510

475

456

424

412

391

382

382

378

370

366

339

339

343

343

*347

343

16,075

519

0.752

0.87

Nov.

343

378

370

351

339

328

309

317

309

298

284

298

412

475

403

382

386

399

378

335

446

5,800

1,860

1,050

800

880

877

798

700

660

18,965

632

0.916

1.02

Dec.

500

580

520

570

510

600

1,400

5.160

1,930

1,390

1,200

,350

,670

,550

,250

,3OO

,540

,580

,000

1,200

1,120

1,050

978

962

1,110

940

640

962

926

620

420

34,508

1,107

1.60

1.85

Jan.

540

520

540

580

560

495

490

510

500

480

420

435

450

410

*390

390

375

360

340

320

340

370

6,000

4,130

2,690

2,170

1,790

1,550

1,400

1,200

1,100

51,845

1,027

1.49

1.72

Feb.

1,OOO

950

880

900

800

700

720

740

660

720

620

500

560

*610

520

500

540

540

520

500

490

450

475

460

470

540

4.000

2,400

-

22,745

812

1.18

1.25

Mar.

2,000

1,500

1,500

1,100

950

980

940

920

920

900

800

81fJ

860

,OOO

,500

,650

,100

,700

* ,550

,550

,400

,550

,800

,700

,450

* ,240

,240

,200

,210

,190

,110

40,72O

1,314

1.90

2.19

Apr.

1.110

2,260

2,570

1,710

1,590

2,260

2,570

2,070

1,830

1,670

1,610

1,550

1,910

1,600

1,430

1,580

1,450

1,630

1,850

2,160

2.680

2,560

1,830

1,610

1,480

1,580

1,280

1,190

*1,110

1,190

52 , 500

1,743

2.53

2.82

May

1,100

970

898

874

810

747

698

656

614

570

686

668

650

761

1,010

1,100

858

734

674

1,430

2.740

1,660

1,500

1,130

962

826

1,140

97O

*818

728

710

29,492

951

1.38

1.59

June

710

668

906

698

609

535

749

850

620

550

470

424

412

582

570

346

299

277

273

315

269

241

217

552

465

1,770

1,090

2,140

1,420

1,190

19,577

655

0.946

1.06

July

1,020

768

604

728

1,660

1,910

1,110

1,370

1,070

866

710

*626

560

505

944

680

535

447

591

550

550

370

657

475

403

354

503

295

538

729

545

21,653

698

1.01

1.17

Aug.

612

- 504

570

315

288

280

252

2 SO

217

217

322

595

362

269

*244

221

214

192

186

180

162

152

152

141

156

141

185

174

149

143

143

7,546

245

0.352

0.41

Sept.

153

150

160

275

198

162

146

158

135

*155

*123

126

128

120

126

126

162

171

145

128

133

143

653

*582

346

258

211

189

168

165

5,787

193

0.280

0.31

Calendar year 1956 : Max 14,900 Mln 150 Mean 1,143 Cfsm 1.66 In. 22.55

Water year 1956-57 : Max 6,OOO Mln 120 Mean 825 Cfsm 1.20 In. 16.24

Peak discharge (base, 11,60O efs). No peak above base

* Discharge measurement made on this day.

Note. Doubtful gage-height record Feb. 28 to Mar. 26; discharge computed on basis of 2 discharge 

measurements, recorded graph, weather records, and records for Dog River at Northfleld Palls, and 

Mad River near Moretown. Stage-discharge relation affected by Ice Nov. 24-26, Nov. 29 to Dec. 7, 

Dec. 11, 12, 14, 15, 26, 27, I>c. 30 to Jan. 23, Jan. 28 to Feb. 27, and at times during period of 

doubtful gage-height record.
CONNECTICUT RIVER BASIN 169

Connebticut River at White River Junction, Vt.

Location.--Lat 43°38'50", long 72°18'45", on right bank 50 ft downstream from railroad 

bridge at White River Junction, Windsor County, and 500 ft downstream from White River.

Drainage area. 4,092 sq mi.

Records available.--October 1911 to September 1957.

Gage.--Water-stage recorder. Datum of gage Is 321.52 ft above mean sea level, datum of 

1929. Prior to June 16, 1918, painted staff gage on downstream side 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.--46 years, 7,182 cfs (adjusted for storage).

Extremes. Maximum discharge during year, about 23,000 cfs Jan. 23, occurred during period of no gage-height record; minimum daily, 154 cfs Sept. 22.

1911-57: Maximum discharge, 136,000 cfs Nov. 4, 1927 (gage height, 35.0 ft, present 

site), from rating curve extended above 70,000 cfs by logarithmic plotting; irinimum 

daily, 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, Moore Reservoir, Union Village Reservoir (see p. 233), and other 

reservoirs (combined usable capacity, about 17-jj billion cubic feet).

Cooperation.--Wire-weight-gage readings furnished by U. S. Weather Bureau.

Revisions (water years).--WSP 741: 1932 (adjusted monthly and yearly figures orly). 

WSP 781:1928(M). WSP 891: Drainage area. WSP 1301: 1922-26(M).

Rating table, water year 1956-57, except periods of ice effect (gage 

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

2.6 

3.0 

3.5 

4.0

151

301

585

990

5.0

6.0

8.0

12.0

2,150

3,730

8,180

20,000

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

3,560

4,030

3,790

4,860

4,910

2,980

3,030

8,450

*8,430

6,160

6,080

4,640 

2,600

1,050

4,540

4,800

4,740

4,250

3,820

2,010

1,400

3,810

3,800

3,760

3,330

3,570

1,930

644 

3,200

3,050

2,730

119,934

3,869

-621

Nov.

3,620

3,730

2,820

1,830

3,180

2,940

2,780

2,910

3,230

1,880

957

1,820 

3,600

3,860

4,080

3,630

2,210

1,650

3,780

4,240

4,470

alZ.500 

a!2,400

a!2,300

5,560

5,580

5,950

5,770 

5,630

5,480

134,387

4,480

-127

Dec.

3,520

1,980

4,420

3,960

4,410

4,660

5,870

8.220

6,370

7,220

6,770

6,970 

7,050

7,410

4,930

4,550

6,710

6,470

6,200

5,970

5,370

4,370 

3,700

4,520

2,760

5,130

4,530

4,430 

2,910 

1.600

3,630

156,610

5,052

-151

Jan.

1,800

4,300

a4,150

a4,100

a2,450

a2, 500

a4,000

a3,000

a3,000

a3, 500

a2 , 900

a2 , 300 

al,800

a3,100

a3, 500

4,000

3,300

3,700

1,300

750

3,000

3,200 

a!4,000

al4.500

11,000

9,690

7,140

8,150 

7,500

6,400 

6,400

150,430

4,853

-487

Feb.

5,9OO

4,100

1,850

5,400

5,500

5,000

4,700

5,120

3,780

2,500

4,700

4,700 

4,100

4,300

*4,900

3,400

1,800

4,600

4,600

4,500

4,500

4,200 

2,850

1,700

4^300

4,200

15,500

11,000

131,700

4,704

-1,154

Mar.

5,000

7,000

5,400

8,800

7,580

8,330

8,630

7,500

6,920

2 . 550

5,160

6,770 

6,740

6,800

8,430

12 . 500

7,750

10,200

9,430

9,480

9,720

9,370 

8,890

7,940

8,770

*9,88o

9,070

8,980 

9,260

8,340

3,360

244,330

7,882

-1,235

Apr.

7,560

8,770

10,900

10,700

10,400

11,000

10, 500

11,200

10,600

10,400

10,600

9,580 

8,700

6.100

8,920

9,990

9,330

10,300

11,000

12,000

13,500

16,800 

19.500

17,100

14,000

12,200

10, 700

8,200 

9,500

9,300

329,350

10,980

+1,864

May

9,100

9,100

7,100

3,600

2,000

6,810

5,700

5,300

4,700

4,600

2,600

1.170 

5,570

6,380

7,510

10,400

10,700

7,460

4,260

8,170

16,500

12,800 

11,600

10,000

7,950

3,580

8,200

7,670 

6,340

3,500

5,400

215,770

6,960

+1,120

June

3,000

2,700

6,670

5,990

5,040

4,000

4,600

4,100

2,500

4,700

4,600

5,000 

3,500

2,800

1,200

922

2,800

1,900

1,850

2,000

2,100

780 

B574

2,990

3,320

6,770

6,530

7.050 

4,650 

2 750

107,166

5,572

+252

July

4,150

4,040

4,070

3,260

9,080

11,000

9,570

*7,000

5,200

4,300

4,000

4,600 

2,750

1,500

3,400

3,300

2,900

3,000

3,050

1,780

g522

6,000 

8,520

7,200

4,600

4,500

1,400

1,250 

3,780

6^340

141,582

4,561

+367

Aup.

4_,400

5,900

1,710

g407

3,250

3,510

2,770

2,010

2,300

1,230

750

3,150 

3,180

2,120

3,400

2,920

g.258

g231

3,010

2,430

2,530

2,180 

1,110

g554

g380

2,480

2,190

1,510 

992

1,300 

p-215

62,177

2,006

-318

Sept.

g239

g624

2,680

2,500

1,320

1,460

*789

g!84

1,510

1,400

1,850

1,950 

1,690

708

g!69

1,540

2,060

2,090

1,710

1,340

g!72

g!54 

4,690

6.550

4,640

3,170

2,500

g357 

505

2,240

52,551

1,752

-134

Adjusted for change in reservoir

Mean 

Cfsm 

In.

3,248 

0.794

0.92

4,352

L.oe

1.1E

Calendar year 1956: 

Water year 1956-57:

4,901

1.20 

1.38

4,366 

1.07 

1.23

3,550 

0.868 

0.90

6,646 

1.62 

1.87

12,842 

3.14 

5.50

8,081 

1.97 

2.28

Observed

Max 39,900 Mln 187 Mean 6,494 

Max 19,500 Mln 154 Mean 5,057

3,825 

0.935 

1.04

4,928 

1.20 

1.39

1,688 

0.413 

0.48

1,618 

0.395 

0.44

Adjusted

Mean 6,709 Cfsm 1.64 In. 22.31 

Mean 5,009 Cfsm 1.22 In. 16.62

Peak discharge (base, 34,000 cfs). No peak above base.

* 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, Comerford Station Pond, Moore Reservoir, and Union Village Reservoir.

a No gage-height record; discharge estimated on basis of weather records, recorded range in stage 

when available, powerplant records, and records fop White River at West Hartford.

g Computed from twice-daily wire-weight-gage readings.

Note.--Doubtful or no gage-height record Feb. 10 to Mar. 3; discharge estimated on basis of 1 discharge measurement, weather records, powerplant records, twice-daily wire-weight-gage readings, and 

records for White River at West Hartford. Stage-discharge relation affected by ice Dec. 30, Jan. 2, 

16-22, Jan. 29 to Fee. 7, and at times during periods of no gage-height record Jan. 5-15, 25, 24, 

and period of doubtful or no gage-height record Feb. 10 to Mar. 3.

505692 O - 59 -12
CONNECTICUT RIVER BASIN

Mascoma River at West Canaan, N. H.

Location.--Lat 43 D 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 1957.

Gage.--Water-stage recorder. Altitude of gage is 835 ft (from topographic map).

Average discharge. 18 years, 121 cfs.

Extremes.--Maximum discharge during year, 430 cfs Nov. 22 (gage height, 3.35 ft); maximum 

gage height, 4.32 ft Jan. 24, 25 (backwater from ice); minimum discharge, 5.1 cfs 

Sept. 15.

1939-57: 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 floodmarks (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 or no gage-height record, 

~~- are fair.

Rating table, water year 1956-57, except periods of ice effect (gage 

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

0.4 

.6

1.2 

1.5

3.6

7.7

17

34

60

2.0 

2.5 

3.0 

3.5

122

215

334

475

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

3O

31

Total

Mean

Cfsm

In.

Oct.

40

36

39

41

41

a4O

a70

*a!05 "TO

59

61

49

44

42

40

36

33

31

29

28

28

28

28

33

32

29

30

28

26

25

*24

1,245

40.2

0.499

0.58

Nov.

39

59

48

40

37

33

31

30

30

28

22

zS

47

54

46

43

41

40

37

37

52

379

225

122

100

86

85

76

71

61

2,025

67.5

0.839

0.94

Dec.

50

55

49

49

48

52

74

Tso" 138

*110

105

110

125

110

103

112

135

110

80

88

85

78

71

79

100

88

65

86

78

55

!§

2,653

85.6

1.06

1.23

Jan.

50

49

47

54

50

45

44

44

43

42

38

39

40

*38

37

36

38

37

36

35

36

44

150

280

180

140

115

100

86

76

70

2,119

68.4

O.85O

0.98

Feb.

65

60

56

58

52

49

47

54

52

50

*48

42

39

37

36

36

36

35

34

32

31

29soso

31

34

185

250

1,538

54.9

0.682

0.71

Mar.

215

175

130

100

80

70

64

62

65

90

75

70

66

80

110

170

200

150

125

115

105

135

166

158

*138

130

135

133

133

133

120

3,698

119

1.48

1.71

Apr.

118

199

251

175

145

160

213

179

156

140

145

142

184

149

124

116

128

147

179

202

228

*202

162

140

132

119

110

104

97

ITS

4,662

155

1.93

2.15

May

107

88

79

74

68

63

58

54

50

47

47

46

49

79

79

80

63

55

49

121

294

T69

119

102

79

67

96

91

72

60

51

2,556

82.5

1.02

1.18

June

47

54

*102

70

52

44

68

68

48

39

33

29

27

24

28

26

20

17

17

30

23

17

15

28

27

89

106

91

74

59

1,372

45.7

0.568

0.63

July

42

30

24

59

237

266

106

108

94

118

79

60

*47

40

38

32

27

23

21

20

19

21

28

23

20

17

16

15

20

68

40

1,758

56.7

0.704

0.81

Aug.

32

24

19

17

19

17

15

14

IS

41

62

*5S

39

26

21

18

16

15

14

13

22

39

27

36

28

22

19

22

25

54

35

822

26.5

0.329

0.38

Sept.

22

17

*17

19

14

11

9.4

8.8

8.3

7.5

6.8

6.8

6.6

5.7

5.5

6.4

9.7

9.4

7.7

*6.8

6.4

6.8

82

53

26

19

14

12

11

10

445.4

14.8

0.184

0.21

Calendar year 1956: Max 1,560 Win 8.8 Mean 122 Cfsm 1.52 In. 20.69

Water year 1956-57: Max 379 Min 5.3 Mean 68.2 Cfsm 0.847 In. 11.51

Peak discharge (base, 950 cfa).--No peak above base.

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of 1 discharge measursment, weather records, 

recorded range in stage, and records for Baker River near Rumney.

Note..--Stage-discharge relation affected by ice Nov. 25, Dec. 1, 2, 4, 5, 10, 11, 13, 14, 19-22, 

26-28, Dec. 30 to Feb. 23, Feb. 26 to Mar. 22.
CONNECTICUT RIVER BASIN

Mascoma River at Mascoma, N. H.

Location. Lat 43°39 I 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 1957.

Gage. Water-stage recorder. Altitude of gage is 740 ft (from topographic map).

Average d1scharge.--34 years, 216 cfs (adjusted for storage since October 1928).

Extremes. Maximum discharge during year, 305 cfs Apr. 3, 4 (gage height, 1.70 f';); minimum daily, 26 cfs Aug. 31, Sept. 1, 7, 14.

1923-57: 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. 233).

Revisions (water years). WSP 726: Drainage area. WSP 801: 1925(M).

Rating table, water year 1956-57 (gage height, in feet, and discharge, 

in cubic feet per second)

0.3 

.5 

.7

1.0 

1.5 

2.0

114

241

412

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

*112

132

T27

127

110

65

77

118

118

116

116

103

59

71

114

114

114

112

100

55

68

108

108

1O6

106

93

52

63

1O4

101

99

3,068

99.0

-40.9

Nov.

97

87

49

59

*95

95

93

92

82

44

44

69

90

90

89

82

44

53

87

87

85

89

86

51

69

104

T04

104

104

94

2,418

80.6

+36. 9

Dec.

53

67

106

104

1O3

103

*90

51

63

1O8

108

108

110

114

116

116

116

118

118

118

118

118

118

118

118

118

118

118

118

118

118

3,288

106

+52.2

Jan.

118

118

121

121

121

121

121

121

121

121

*123

121

118

129

141

136

136

134

132

129

129

127

132

136

158

170

172

172

172

178

185

4,234

137

-12.1

Feb.

185

182

182

188

193

190

185

188

193

190

*190

193

198

196

198

204

201

198

201

204

201

198

196

190

190

201

204

212

-

5,451

195

-111

Mar.

229

244

247

256

263

266

269

266

269

263

256

247

244

238

241

250

275

*288

288

288

285

282

279

279

279

275

275

272

269

263

256

8,201

265

-26.1

Apr.

279

292

298

305

298

26O

247

253

256

256

253

250

253

253

247

244

238

232

232

238

241

244

205

150

153

153

155

150

*129

118

6,882

229

+ 73.3

May

118

108

92

51

64

104

95

87

82

70

41

46

82

82

82

82

66

42

50

87

87

92

95

80

53

63

*103

99

85

73

2,424

78.2

+55.0

June

41

51

87

87

87

87

72

48

58

87

87

110

106

86

51

56

92

92

92

90

73

46

55

87

95

95

85

72

46

51

2,272

75.7

-1.39

July

64

64

64

64

66

60

*57

110

134

165

185

158

118

106

82

82

81

79

67

46

53

79

75

69

68

58

37

47

64

64

64

2,530

81.6

+ 5.30

Aug.

64

56

36

46

65

64

64

63

52

34

38

*61

61

61

60

50

32

35

57

55

54

54

46

28

39

73

82

79

79

61

26

1,675

54.0

-26.9

Sept.

26

IT

84

82

81

68

26

47

82

81

81

81

74

26

46

114

~99 120

97

*88

35

49

95

95

95

95

82

34

49

95

2,168

72.3

-53.8

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

58.0 

0.379 

0.44

118 

0.771 

0.86

Calendar year 1956: 

Water year 1956-57:

158 

1.03 

1.19

124 

0.810 

0.94

84.1 

0.550 

0.57

238 

1.56 

1.80

303 

1.98 

2.21

133 

0.869 

1.00

Observed

Max 1,800 Mln 44 Mean 212 

Max 305 Mln 26 Mean 122

74.3 

0.486 

0.54

86.9 

0.568 

0.65

27.1 

0.177 

0.20

18.4 

0.120 

0.13

Adjusted

Mean 215 Cfsm 1.41 In. 19.17 

Mean 119 Cfsm 0.778 In. 10.53

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Mascoma and Crystal Lakes and 

and Grafton Ponds.
172 CONNECTICUT RIVER BASIN

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, and 1 mile upstream from mouth.

Drainage area. 221 sq mi.

Records available.--October 1930 to'September 1957.

Gage. Water-stage recorder. Datum of gage is 336.77 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers).

Average discharge. 27 years, 398 cfs.

Extremes.--Maximum discharge during year not determined (occurred Jan. 23 during period of 

no gage-height record); maximum gage height, 8.55 ft Jan. 23 (ice Jam); minimum discharge, 15 cfs Sept. 1; minimum daily, 17 cfs Aug. 25.

1930-57: 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, wster year 1956-57, except periods of ice effect (gage 

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

Oct. 1 to Jan. 23

2.4 

2.7 

3.0 

3.5

113

184

274

465

4.0 

4.5 

5.0 

6.0

695

970

1,360

2,420

Jan. 24 to Sept. 30

1.4 16 2.6 147

1.7 33 3.0 273

2.0 54 3.5 465

2.3 87

Note. Same as preceding 

table above 3.5 ft.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

31

Total

Mean

Cfsm

In.

Oct.

242

215

268

255

268

236

452

520

*374

319

288

271

255

248

245

227

215

212

201

190

190

195

184

184

171

161

163

161

158 

151

148

7,367

238

1.08

1.24

Nov.

169

*179

158

153

146

134

134

132

132

124

113

128

176

179

156

151

153

166

146

130

196

1.170

676

359

285

315

326

298

264 

248

7,096

237

1.07

1.19

Dec.

180

230

£00

220

210

256

*469

977

636

456

444

542

710

715

550

578

627

560

398

496

444

414

402

406

444

382

280

390

363

270

170

13,419

433

1.96

2.26

Jan.

220

210

220

230

220

190

200

200

190

185

170

180

190

170

*160

160

155

145

135

150

145

150

2.000

1,400

900

700

600

500

460

400

370

11,285

364

1.65

1.90

Feb.

350

320

300

310

280

250

250

260

240

250

215

175

190

210

185

175

185

*185

180

160

160

150

Tfo

160

170

220

1.500

780

-

7,780

278

1.26

1.31

Mar.

573

478

414

352

275

275

275

300

294

308

255

287

294

444

573

958

715

560

470

474

478

*528

568

555

501

488

488

470

474 

478

439

14,041

453

£.05

2.36

Apr.

422

788

890

632

582

1.080

1,030

812

720

655

636

609

720

609

537

510

537

591

622

665

765

690

564

506

474

*435

422

390

567 

386

18,646

622

2.81

3.14

May

348

312

290

284

270

256

235

218

205

190

196

199

205

208

273

290

228

199

175

428

745

474

363

315

262

235

354

290

248

 202

8,715

281

1.27

1.47

June

298

238

252

202

172

153

256

228

172

158

135

123

117

105

104

100

96

83

75

74

77

60

42

108

162

621

367

371

322

298

5,569

186

0.842

0.94

July

238

175

137

199

516

547

301

228

174

161

144

*130

1£2

103

147

109

94

80

75

64

49

81

76

73

72

71

54

30

164 

378

344

5,136

166

0.751

0.86

Aug.

245

171

110

93

99

86

90

82

79

93

128

215

166

98

87

*89

77

72

77

76

72

70

66

59

11

55

79

78

70 

68

43

2,910

93.9

0.425

0.49

Sept.

37

49

72

112

78

68

57

*60

50

52

50

56

60

24

44

86

87

83

69

59

27

53

274

176

*89

73

64

28

46 

67

2,150

71.7

0.324

0.36

Calendar year 1956: Max 5,900 Mln 67 Mean 417 Cfsm 1.89 In. 25.70

Water year 1956-57: Max 2,000 Mln 17 Mean 285 Cfsm 1.29 In. 17.52

Peak discharge (base, 5,500 ofa). No peak above base.

* Discharge measurement made on this day.

Note. No gage-height record Jan. 23 to Feb. 18; discharge estimated on basis of 1 discharge measurement, weather records, and records for White River at West Hartford. Stage-discharge relation 

affected by Ice Nov. 25, Dec. 1-5, 27, 28, Dec. 30 to Jan. 22, Feb. 19-27, Mar. 5-8, 11, 19, and at 

times during period of no gage-height record.
CONNECTICUT RIVER BASIN 

Sugar River at West Claremont, N. H.

173

Location. Lat 43°23'15", long 72°21'45", on right bank 0.2 mile downstream froir Redwater 

Brook at West Claremont, Sullivan County.

Drainage area. 269 sq mi.

Records available. May 1928 to September 1957. Published as "at Claremont" prior to 

October 1928.

Gage. Water-stage recorder. Datum of gage is 358.78 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers). Prior to Oct. 1, 1928, chain gage at site 

0.8 mile upstream at different datum.

Average discharge. 29 years, 396 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 4,500 cfs Jan. 23 (gage height, 5.91 ft); minimum daily, 21 cfs Sept. 1.

1928-57: 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, 1936 (ice jam); minimum daily discharge, that of Sept. 1, 1957.

Remarks. Records excellent except those for periods of ice effect or no gage-height record, which are fair. Flow regulated by mills above station and by Sunapee Lake (see 

p. 233).

Revisions (water years) .--WSP 711: 1930(M). WSP 756: Drainage area.

Rating table, water year 1956-57, except periods of ice effect (gage 

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

0.9 

1.1 

1.3 

1.6 

2.0

20

45

86

175

325

2.5 

3.0 

4.0 

5.0

565

885

1,750

3,020

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

102

100

100

108

102

137

241

189

149

131

122

110

110

113

105

102

100

97

86

89

97

91

94

97

91

*84 

89

97

89

89

3,430

111

-30.2

Nov.

105

119

110

110

108

100

97

94

94

89

86

94

102

122

119

113

108

119

122

108

133

680

512

325

235

225

216 

199

178

165

4,987

166

-14.7

Dec.

125

149

149

*149

127

143

159

269

309

265

250

399

583

541

373

474

495

412

285

335

325

285

231

305

373

295

270 

293

273

165

150

8,956

289

+19.0

Jan.

180

175

190

200

190

170

185

190

185

175

150

160

165

150

140

135

130

125

120

115

115

130

2.000

1,300

900

600

450 

380

350

300

260

10,015

323

+24.3

Feb.

250

230

220

240

210

190

190

190

175

195

170

160

145

155

140

135

135

135

130

125

120

120

120

130

140

200

700 

BOO

_

5,850

209

+5.37

Mar.

605

460

380

335

270

245

230

220

223

216

210

210

215

312

464

829

836

655

524

464

416

485

*553

547

506

474

458 

474

474

464

435

13,189

425

+30.6

Apr.

421

726

990

692

589

661

808

698

625

565

583

553

631

541

464

425

439

480

524

553

571

512

435

390

353

333

309 

*305

301

313

" ----

15,790

526

+47.1

May

293

261

238

220

216

209

192

178

165

159

156

165

178

175

210

297

238

189

182

384

808

518

382

305

234

213

277 

325

281

223

209

8,080

261

-11.2

June

175

172

202

*172

149

137

143

137

125

122

116

82

89

93

116

137

128

97

89

137

102

108

15

67

113

153

265

206

156

131

3,964

132

-26.2

July

110

*108

76

76

149

241

162

128

102

84

86

72

72

68

71

86

91

70

61

28

37

35

49

47

34

42

41 

39

44

74

102

2,485

80.2

-20.5

Aug.

102

72

72

54

56

63

45

39

50

45

56

156

149

110

86

74

58

47

42

54

52

59

50

63

.33

62

56 

54

54

47

42

2,002

64.6

-17.5

Sept.

21

45

61

50

47

41

42

37

39

47

45

44

44

42

38

60

81

74

68

63

59

60

106

M§ *100

79

68 

61

50

58

1,776

59.2

-31.6

Adjusted for change In contents In Sunapee Lake

Mean 

Cfsm 

In.

80.4 

0.299 

0.34

152 

0.56E 

0.63

Calendar year 1956: 

Water year 1956-57:

308 

1.14 

1.32

347 

1.29 

1.49

214 

0.796 

0.83

456 

1.70 

1.95

Observed

573 

2.13

2.38

249 

0.926 

1.07

Max 4,820 Mln 61 Mean 423 

Max 2,000 Mln 21 Mean 221

106 

0.394 

Q.44.

59.6 

0.222 

0.26

47.0 

0.175 

C.20

Adjusted

27.6 

0.103 

0.11

Mean 422 Cfsm 1.57 In. 21.35 

Mean 218 Cfsm 0.810 In. 11.02

Peak discharge (base, 3,000 cfs).--Jan. 23 (7 to 7:30 p.m.) 4,500 cfs (5.91 ft).

* Discharge measurement made on this day.

t Change In contents, equivalent in cubic feet per second, In Sunapee Lake.

Nobe. No gage-height record Jan. 24 to Feb. 3; discharge estimated on basis of weather recorda 

and records for Cold River at Drewsvllle, N. H., Saxtons River at Saxtons River, Vt., and Black 

River at North Springfield, Vt. Sbage-discharge relation affected by Ice Nov. 24-26, Dec. 1, 10, 

11, 19, 20, 26, 27, Dec. 30 to Jan. 23, Feb. 4 to Mar. 7 , Mar. 11-13, and during part of period of 

no gage-height record.
174 CONNECTICUT RIVER BASIN

Black River at North Springfield, Vt.

Location. Lat 43°20'00", long 72°30'55", on right bank at North Springfield, Windsor 

County, 1,300 ft upstream from Great Brook.

Drainage area. 158 sq ml.

Records available. October 1929 to September 1957. October 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. 28 years, 282 ofs.

Extremes. Maximum discharge during year, about 2,300 cfs Jan. 23; maximum gage height, 

9.24 ft Jan. 23 (Ice Jam); minimum dally discharge, 17 cfs Sept. 10.

1929-57: Maximum discharge, 15,500 cfs Sept. 22, 1938 (gage height, 17.68 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 dally, 10 cfs Oct. 17, 1937.

Remarks. Records excellent except those for periods of Ice effect and shifting control 

or backwater from bridge construction, 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 1956-57, except periods of loe effect or shifting control 

and/or backwater from bridge construction (gage height, In feet, and discharge, 

in cubic feet per second)

Oct. 1 to June 19 June 20 to Sep*;. 30

2.1 

2.4 

2.7

41

79

135

3.0 205

4.0 535

6.0 1,560

1.6 13

1.7 21

1.9 45

2.2

2.7 

3.1

103

250

420

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

125

117

122

118

127

108

221

213

156

137

116

116

106

108

98

118

71

76

69

63

63

70

69

68

69

65

*57

63

63

57

62

3,091

99.7

0.631

0.73

Nov.

67

78

101

89

76

77

71

68

68

62

56

64

104

100

102

80

82

83

86

81

107

868

499

314

215

208

202

173

163

148

4,492

150

0.949

1.06

Dec.

128

144

128

*144

120

128

195

492

432

320

269

344

554

470

386

390

436

372

269

308

275

273

265

277

311

260

250

290

254

165

120

8,769

283

1.79

2.06

Jan.

145

140

145

150

140

130

140

130

120

115

110

120

120

110

100

100

92

87

83

80

78

88

1.5-00

1,200

800

600

450

350

320

300

260

8,303

268

1.70

1.95

Feb.

240

220

200

210

190

170

160

170

160

180

140

110

120

130

120

115

120

120

115

110

105

98

95

92

100

120

"600 900

_

5,210

186

1.18

1.23

Mar.

450

350

300

250

210

200

190

190

205

200

180

190

200

280

370

740

559

428

362

338

320

394

*428

408

369

348

355

352

358

355

320

10,199

329

2.08

2.40

Apr.

320

682

647

488

456

1.020

896

656

555

492

470

488

567

478

418

380

390

410

430

460

500

450

380

340

300

280

250

270

240

260

13,973

466

2.95

3.29

May

220

200

180

170

167

157

144

124

124

115

120

127

137

126

200

280

200

170

140

450

580

400

300

240

200

180

280

250

220

200

180

6,581

212

1.34

1.55

June

170

160

170

*140

120

105

110

105

90

80

75

70

58

50

55

50

46

42

45

40

41

42

37

55

68

230

174

165

175

161

2,929

97.6

0.618

0.69

July

111

*91

82

117

585

269

167

119

109

95

88

91

80

76

114

89

67

58

46

40

37

37

34

31

33

34

31

35

62

122

138

2,886

93.1

0.589

0.68

Aug.

105

89

74

71

74

53

43

49

43

38

74

65

57

44

41

42

36

37

29

28

39

24

26

24

26

35

40

29

29

27

23

1,414

45.6

0.289

0.33

Sept.

24

27

34

43

31

22

27

22

27

JL7

24

26

23

24

23

33

50

43

42

40

28

30

"S7 72

*43

33

28

35

31

31

1,000

33.3

0.211

0.24

Calendar year 1956: Max 4,210 Min 23 Mean 291 Cfsm 1.84 in. 25.09

Water year 1956-57: Max 1,500 Min 17 Mean 189 Cfsm 1.20 In. 16.21

Peak discharge (base, 3,600 cfs).--No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 10, 26-28, Dec. 30 to Mar. 16 (no gage-height 

record Jan. 26 to Feb. 2). Shifting-control method and/or backwater from bridge construction 

Apr. 16 to May 3, May 15 to June 19.
CONNECTICUT RIVER BASIN 175

Williams River at Broekway Mills, Vt.

Location. Lat 43°12'30", long 72°31'05", on left bank 25 ft upstream from highway bridge 

at Broekway Mills, Windham County, 4 miles downstream from Hall Brook, 4.6 miles upstream from mouth, and 6 miles northwest of Bellows Palls.

Drainage area. 103 sq ml.

Records available. June 1940 to September 1957.

Gage. Water-stage recorder. Altitude of gage Is 430 ft (from topographic map).

Average discharge. 17 years, 166 efs.

Extremes. Maximum discharge during year, 2,000 cfs Jan. 23 (gage height, 6.15 ft); maximum gage height, 7.04 ft Jan. 23 (ice jam); minimum discharge, 6.2 efs Aug. 24.

1940-57: Maximum discharge, 8,910 efs June 1, 1952 (gage height, 13.39 ft), from 

rating curve extended above 3,300 efs on basis of slope-area determination at gage 

height 13.31 ft; minimum not determined, occurred Dec. 11, 1941, during period of lee 

effect; minimum dally, 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 periods of lee effect, which are fair. 

Revisions (water years).--WSP 1031: 1943-44(P). WSP 1301: 1941-42(M).

Rating table, water year 1956-57, except periods of ice effect (gage 

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

0.8

1.0 

1.2 

1.5 

1.8

2.3 

3.0 

4.0 

5.0

186

390

770

1,280

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

29

30

39

32

67

70

46

38

34

32

30 

29

29

28

27

26

25

24

24

24 

25

30

28

25

25

*25

25

24

24

971

31.3

0.304

0.35

Nov.

37

45

82

53

42

37

35

33

32

32

26

32

42 

41

36

35

34

38

30

31

57

. Mi 

161

85

65

80

78

69

61

58

1,968

65.6

0.637

0.71

Dec.

~5Z 50

*55

56

54

56

98

227

149

105

100

227

345 

254

174

254

264

201

150

175

153

149 

142

155

198

145

132

150

134

76

57

4,548

147

1.43

1.64

Jan.

72

67

82

88

82

75

79

82

80

74

62

64

67 

62

56

55

54

50

47

45

50

70 

1,000

393

257

224

191

160

145

135

120

4,088

132

1.28

1.48

Feb.

110

100

95

105

95

84

84

90

120

*110

100

85

75 

83

73

70

63

59

56

54

52

51 

50

52

52

75

550

285

-

2,878

103

1.00

1.04

Mar.

210

165

135

105

95

93

93

97

100

93

"90 78

93 

201

280

602

393

280

240

221

219

277 

*301

286

237

219

219

221

214

201

181

6,239

201

1.95

2.25

Apr.

172

585

410

259

292

844

585

397

342

314

301

304

304 

248

214

198

208

214

221

224

232

194 

167

151

*136

130

121

152

138

142

8,199

273

2.65

2.96

May

121

104

97

93

86

78

72

65

60

55

57

72

73 

63

99

147

88

75

65

353

364

T79 

136

110

86

77

112

88

72

61

56

3,264

105

1.02

1.18

June

52

51

57

*46

42

39

60

51

39

33

30

28

28 

25

24

22

20

18

17

18

17

15

14

18

21

156

*S5

43

74

61

1,199

40.0

0.388

0.43

July

35

26

21

54

156

97

47

35

28

28

24

23

21 

19

18

16

14

14

12

12

11

11 

11

To- 10

il

10

12

21

28

35

870

28.1

0.273

0.31

Aug.

24

17

13

12

12

11

10

9.6

9.0

9.8

13

14

11 

9.6

9.0

8.7

8.4

8.4

8.4

7.9

7.0

6.6 

6.4

6.4

6.4

7.9

12

9.6

7.9

7.7

7.7

311.4

10.0

0.037

0.11

Sept.

7.0

12~ 6.8

15

10

8.7

7.9

7.9

7.7

7.0

7.9

9.0

8.1 

7.7

7.7

15

38

18

13

11

11

11 

28

24

*15

13

11

10

10

9.8

368.2

12.3

0.119

0.13

Calendar year 1956: Max 2,810 Min 8.6 Mean 165 Cfsm 1.60 in. 21.76

Water year 1956-57: Max 1,000 Min 6.4 Mean 95.6 Cfsm 0.928 In. 12.59

Peak discharge (base, 2,600 cfs). No peak above base.

* Discharge measurement made on this day.

Mote. Stage-discharge relation affected by Ice Nov. 19, 20, 24, 25, Nov. 29 to Dec. 5, Dec. 10, 

11, 20, 26, 28, Dec. 30 to Jan. 23, Jan. 28 to Mar. 7, Mar. 9-11, 13.
176 CONNECTICUT RIVER BASIN 

Saxtons River at Saxtons River, Vt.

Location. Lat 43°08'15", long 72°29'15", on right bank 130 ft upstream from highway bridge, 

 0.8 mile east of Saxtons River, Windham County, 1.4 miles upstream from Bundy Brook, and 

3.9 miles upstream from mouth.

Drainage area. 72.2 sq mi.

Records available. June 1940 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 390 ft (from topographic map).

Average discharge. 17 years, 118 cfs.

Extremes. Maximum discharge during year not determined, occurred Jan. 23 during period of 

no gage-height record; minimum, 3.4 cfs Sept. 10; minimum daily, 3.6 cfs Sept. 9, 10.

1940-57: Maximum discharge, 5,430 cfs June 1, 1952 (gage height, 11.37 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, 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 or no gage-height record, 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 table 

height,

water year 1956-57, except periods of Ice effect (gage 

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

3.0 

3.5

*.o

5.0 

6.0

76

160

276

620

1,100

Discharg;e, in cubic feet per second, water year October 1956 to September 1957

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

16

18

18

26

20

57

49

31

25

ZZ

20

20 

20

19

18

17

16

16

16

16

16

16

20

18

16

16

*16

15

14

15

640

20.6

0.285

0.33

Nov.

32

56

87

49

37

31

29

26

25

23

18

24

29 

29

27

26

26

28

23

32

37

292

125

72

67

70

64

56

56

53

1,549

51.6

0.715

0.80

Dec.

46

48

*42

43

44

44

56

142

114

82

82

140

239 

E07

139

152

176

145

100

132

114

116

109

113

150

120

109

116

106

90

60

3,376

109

1.51

1.74

Jan.

67

65

66

70

65

60

64

*66

64

58

50

52

54 

50

45

45

43

40

37

36

38

50

700

244

166

143

120

104

94

84

75

2,915

94.0

1.30

1.50

Feb.

70

66

64

72

64

57

57

60

80

*75

66

56

50 

56

50

48

45

43

42

41

40

15

41

43

45

75

380

215

_

2,041

72.9

1.01

1.05

Mar.

160

130

110

100

93

89

84

79

84

77

72

72

85 

157

190

349

250

193

170

154

156

184

198

 191

168

154

152

154

149

141

130

4,475

144

1.99

2.31

Apr.

125

383

273

178

226

508

376

250

223

209

204

211

209 

172

150

141

147

150

154

156

154

130

114

104

*96

93

87

ilo

101

92

5,526

184

2.55

2.85

May

82

72

68

67

63

59

53

48

44

41

47

59

58 

51

81

99

64

56

50

219

235

T28

100

79

64

58

86

64

55

47

42

2,339

75.5

1.05

1.20

June

38

37

43

35

*32

29

39

34

27

23

20

19

18 

16

17

16

15

13

12

12

10

9.4

8.8

10

11

55

 38

25

35

30

727.2

24.2

0.335

0.37

July

25

20

15

25

12

35

28

24

20

19

16

15

14 

13

12

11

10

9.0

8.5

8.0

7.5

7.0

7.0

6.5

6.5

7.0

6.5

8.0

14

18

22

487.5

15.7

0.217

0.25

Aug.

15

11

8.5

8.0

8.0

7.0

6.5

6.3

5.8

6.4

8.5

9.0

7.0 

6.3

6.0

5.7

5.5

5.5

5.5

5.3

' 5.1

4.6

4.4

4.0

4.0

6.8

7.4

5.9

4.8

4.8

4.6

203.2

6.55

0.091

0.10

Sept.

4.2

4.0

5.1

5.1

4.4

4.0

3.8

4.2

3.6

3.6

5.1

4.8

4.6 

4.2

4.6

10

*22

12

7.7

6.5

6.2

6.2

32

20

12

9.1

7.1

6.5

6.2

6.2

235.0

7.83

0.108

0.12

Calendar year 1956; Max 1,670 Mln 4.8 Mean HZ Cfsm 1.55 In. 21.06

Water year 1956-57: Max 700 Mln 3.6 Mean 67.2 Cfsm 0.931 In. 12.62

Peak discharge (base, 1,750 cfs).--No peak above base.
CONNECTICUT RIVER BASIN 177

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 Vilas Bridge between 

Bellows Falls, Vt., and North Walpole, N. H. Records include flow of Saxtons River.

Drainage area. 5,493 sq mi, includes that of Saxtons River.

Records available.--March 1942 to September 19S7.

Gage. Water-stage recorder. Datum of gage is 218.63 ft above mean sea level, datum of 

1929.

Average discharge. IS years, 9,339 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 38,900 cfs Jan. 23 (gage height, 17.67 ft); minimum daily, 115 ofs Sept. 2.

1942-57: Maximum discharge, 97,000 ofs Mar. 27, 1953 (gage height, 30.37 ft); minimum daily, 115 cfs Aug. 31, 1952, Sept. 2, 1957.

Maximum stage known, 43.8 ft Mar. 19, 1936, from floodmarks.

Remarks. Records excellent except those for periods of ice effect and doubtful or no 

gage-height record, which are good. Plow regulated by powerplants and by First Connecticut and Second Connecticut Lakes, Lake Francis, Moore Reservoir and Comerford 

Station Pond (see p. 233), and other reservoirs (combined usable capacity, about 

19| billion cubic feet).

Rating table, water year 1956-57, except periods of lee effect (gage 

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

3.8

4.0 

4.5 

5.0 

5.5

115

202

488

930

1,510

2,270

4,230

11,700

25,000

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1 

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

n

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

4,630 

4,730

4,700

6,120

5,890

2,990

3,910

7,230

9,500

9,790

7,030

5,240

4,090

656

6,020

5,880

5,800

5,110

4,640

1,680

1,510

5,180

4,950

4,120

3,950

3,980

1,950

706

3,390

3,400

3,900

142,672

4,602 -692

Nov.

4,430 

5,270

*2,440

2,510

3,590

3,640

3,600

4,700

4,020

2,040

1,120

1,510

4,150

4,690

4,810

4,650

2,680

2,320

5,300

4,500

5,000

12,000

15,000

14,000

10,000

6,600

6,400

7,200

6,800

6,900

161,870

5,396 -104

Dec.

4,500 

2,800

5,000

4,700

5,400

5,280

6,600

8,680

11,200

8,830

8,590

10,400

9,500

9,860

9,510

6,100

7,260

9,580

9,130

8,390

8,310

7,090

5,300

6,630

5,010

6,620

7,210

5,570

4,330

3,780

4,370

215,530

6,953

-80.0

Jan.

1.710 

5,490

4,700

4,500

4,630

3,280

5,300

4,700

4,600

4,600

4,100

3,500

3,000

4,400

3,800

4,400

3,700

4,500

3,500

2,000

4,100

4,400

15,000

21.000

14,000

12,500

11,000

9,400

10,000

8,400

7,800

198,010

6,387 -475

Feb.

7,800 

7,200

4,600

5,200

7,000

6,600

6,900

6,200

5,400

4,560

5,400

5,900

5,700

5,200

5,700

5,500

3,450

4,400

5,550

5,400

5,300

5,200

4,530

3,400

4,080

5,430

11,400

18,000

-

171,000

6,107

-1,259

Mar.

12,500 

12,200

8,770

8,950

9,900

9,310

9,720

9,370

9,780

5.400

6,460

7,140

7,840

9,260

10,300

16,000

16.600

12,900

13,700

12,900

12,700

12,000

12,600

11,300

*12,000

12,000

12,000

11,900

11 , 900

11,900

7,760

337,060

10,870

-1,231

Apr.

S,670 

10,700

16,300

13,900

14,100

16,500

16,400

15,500

14,700

13,800

14,100

13,400

12,800

12,000

11,000

9,670

11,400

12,800

13,200

15,000

16,200

19,300

22,200

20,200

17,300

13,900

13,000

*11,500

11,200

11,200

421,940

14,060

+1,984

May

11,200 

11,300

10,600

5,040

d3,800

7,340

6,860

6,840

6,460

5,970

2,430

2.100

6,660

6,510

6,630

11,200

12,700

10,800

5,370

7,640

20,300

16,300

14,200

11,700

11,400

5,560

7,530

9,640

8,700

5,530

6,740

265,050

8,550

+1,164

June

4,220 

4,100

6,830

6,490

5,730

5,660

5,820

4,070

2,270

5,790

5,330

5,730

4,120

4,040

1,910

735

3,290

2,640

d2,280

2,120

2,010

1,020

692

3,280

3,180

7,220

8.310

8,000

8,280

5,530

130,697

4,357

+225

July

4,560 

5,050

4,020

4,470

7,410

11.300

10,600

10,800

*7,320

5,630

5,370

4,960

4,260

2,680

2,910

4,210

3,700

3,360

3,310

2,830

1,550

2,270

7,450

7,340

7,380

5,960

3,520

1,100

1,920

3 52C

5I970

156,730

5,056

+352

Avg.

7,050 

4,860

2,430

850

3,600

3,300

3,300

2,700

2,700

1,300

1,500

3,600

3,600

3,400

4,300

4,200

700

200

3,800

2,900

2,350

2,200

1,640

119

TfT

2,700

2,890

1,670

1,520

1,540

218

77,608

2,503 -362

Sept.

119 

115

2,730

2,920

1,960

1,690

923

146

1,950

1,590

2,160

1,920

2,470

774

242

1,790

2,410

2,510

1,800

1,850

910

530

5,190

5,390

6,260

4,450

3,550

652

378

2,180

61,559

2,052

-219

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

3,911 

0.712 

0.82

5,291 

0.963 

1.07

Calendar year 1956: 

Water year 1956-57:

6,873 

1.25 

1.44

5,913 

1.08 

1.24

4,848 

0.883 

0.92

9,642 

1.76 

2.02

Observed

16,050 

2.92 

3.26

9,714 

1.77 

2.04

Max 63,800 Mln 310 Mean 8,726 

Max 22,200 uin 115 Mean 6,410

4,581 

0.834 

0.93

5,408 

0.985 

1.13

Adjusted

2,141 

0.390 

0.45

1,833 

0.334 

0.37

Mean 8,944 cfsm l.»3 In. 22.15 

Mean 6,356 Cfsm 1.16 : In. 15.69

Peak discharge (base, 44,000 cfs).--No peak above base.

* 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 and Comerford Station Pond, Union Village Reservoir, 

4 reservoirs in Mascoma River basin, and Sunapee Lake.

d Doubtful gage-height record; discharge computed on basis of recorded graph, powerplant records, 

and records for Saxtons River at Saxtons River, Vt.

Note.--Ho gage-height record Nov. 20 to Dec. 4, Jan. 15-23, Aug. 4-22; discharge estimated on 

basis of weather records, recorded range In stage, powerplant records, and records for Saxtons 

River at Saxtons River, Vt. Stage-discharge relation affected by ice Jan. 3, 4, Jan. 7 to Feb. 9, 

Feb. 11-17, 20-22, 24, 28, Mar. 1.
178 CONNECTICUT RIVER BASIN

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 Bellow Falls, Vt., and 3.4 miles upstream from mouth.

Drainage area. 82.7 sq mi.

Records available. June 1940 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 375 ft (from topographic map).

Average discharge. 17 years, 115 cfs.

Extremes. Maximum discharge during year, 1,040 cfs Jan. 23 (gage height, 5.74 ft); maximum gage height, 6.03 ft Jan. 23 (ice jam); minimum discharge, 6.0 cfs Nov. 11, 

Sept. 14, 15.

1940-57: Maximum discharge, 8,160 cfs Nov. 26, 1950 (gage height, 10.29 ft), from 

rating curve extended above 3,400 cfs by logarithmic plotting; minimnn, 1.3 cfs 

Sept. 23, 1940.

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.

Revisions (water years). WSP 1431: 1952(P).

Rating tables, water year 1956-57, except periods of ice effect (gage 

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

Oct. 1 to Jan. 23 Jan. 24 to Sept. 30

1.6 

1.9 

2.2 

2.6 

3.0

11

20

30

55

91

3.5 

4.O 

4.5 

5.0 

5.5

155

248

395

605

870

1.3 

1.5 

1.8 

2.2 

2.6

5.4 

9.0

3.O 

3.5 

4.0 

4.5 

5.C

157

248

395

605

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

15

15

16

24

21

37

51

3f

30

26

24

22

22

2O

20

19

17

16

15

14

14

14

15

14

13

13

*13

13

12 ~T? 

1C.

610

19.7

0.238

0.27

Nov.

13

16

17

15

14

13

13

13

14

14

11

T5

20

23

2O

19

19

20

16

15

25

194

ToT

47

32

43

46

40

36

28

912

30.4

O.368

0.41

Dec.

21

*32

29

29

24

30

34

55

58

45

42

143

195

160

100

107

100

88

55

75

78

69

67

76

102

71

66

80

73

51 

37

2,192

70.7

0.855

0.99

Jan.

41

40

45

5O

46

43

45

48

46

43

37

40

40

36

35

33

34

33

31

50

30

34

650

450

300

205

150

120

110

88

80

3,013

97.2

1.18

1.35

Feb.

82

79

68

75

69

60

60

61

55

63

58

52

45

46

*42

4O

40

40

39

37

35

3434"

34

37

60

308

219

-

 

1,872

66.9

0.809

O.84

Mar.

175

135

1O5

82

72

70

67

65

67

68

60

60

62

122

191

324 Z"90

221

179

160

156

ISO

202

202

*179

163

163

166

166

162 

148

4,462

144

1.74

2.01

Apr.

143

319

P£

131

204

299

312

250

225

212

214

214

225

186

157

144

148

150

154

154

152

138

123

111

100

*94

88

155

96

94

5,395

180

2.18

2.43

May

82

71

65

62

58

53

50

46

43

41

^ 38

4T

50

47

87

139

82

67

58

183

Tfo" 322

144

1O8

84

68

88

75

63

51 

44

2,600

83.9

1.01

1.17

June

41

43

59

46

*38

34

39

37

32

27

24

22

21

19

20

20

17

14

23

29

19

15

1212"

16

46 61

36

27

23

872

29.1

0.352

0.39

July

22

14

14

34

il

43

28

20

17

15

13

12

11

9.9

14

13

11

9.0

8.0

7.4

7.0

7.2

7.0

6.S

^78

6.8

6.8

7.O

12

17 

29

475.7

15.3

0.185

0.21

Aug.

22

14

9.9

9.5

12

9.0

7.8

7.2

6.8

9.7

12

12

9.9

8.0

7.4

8.0

7.2

6.8

6.S

6.7

6.5

S78

6.8

6.7

6.8

8.0

7.S

7.2

6.8

6.8 

6.7

269.4

8.69

0.105

0.12

Sept.

6.5

6.7

7.2

6.7

6.8

6.5

6.4

6.2

T3

6.2

6.5

6.2

6.2

6.2

6.5

9.4

17

11

8.4

7,2

6.8

6.7

33

21

16

12

*9.7

8.8

8.4

8.0

283.4

9.45

0.114

0.13

Calendar year 1956: Max 1,820 Hin 5.7 Mean 112 Cfsm 1.35 In. 18.51

Water year 1956-57 : Max 650 Hin 6.2 Mean 62.9 Cfsm 0.761 In. 10.32

Peak discharge (base, l.OOO cfs). Jan. 23 (1 p.m.) 1,040 cfs (5.74 ft). ______ _________

* Discharge measurement mede on this day.

Note.--Stage-discharge relation affected by ice Nov. 19, 20, 24, 25, 30, Dec. 1, 11, 14, 15, 17-19, 

26, Dec. 30 to Jan. 16, Jan. 18, 22-31, Feb. 3, 6, 7, 9, 11-13, 15, 16, 20-22, Mar. 1-7, 11, 13 (no 

gage-height record Jan. 2-11).
CONNECTICUT RIVER BASIN 179

West River at Jamaica, Vt.

Location. Lat 43"06"30", long 72"46"30", on left bank a quarter of a mile upst-eam from 

highway bridge at Jamaica, Wlndham County, and 0.4 mile upstream from Ball Mountain 

Brook.

Drainage area. 179 sq mi.

Records available. October 1946 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 640 ft (from topographic map).

Average discharge. 11 years, 367 cfs.

Extremes. Maximum discharge during year, 6,200 cfs Jan. 23 (gage height, 9.49 ft); maximum gage height, 9.54 ft Jan. 23 (ice jam); minimum discharge, 11 cfs Aug. 25.

1946-57: 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 table, water year 1956-57, except periods of Ice effect (gage 

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

3.7 

3.9 

4.2 

4.5 

5.0

1Z

24

52

105

243

5.5 

6.0 

7.0 

8.0 

9.0

460

750

1,680

3,060

5,010

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

El

22

23 

24

25

26 

27 

28

29

30

31

Total

Mean

Cfsm

In.

Oct.

79

73

88

86

143

107

279

306

T83

136

114

110

101

92

86

79

73

71

68

65

63

63

66 

82

79

*66 

65 

65

60

58

58

3,064

98.8

0.552

0.64

Nov.

80

186

382

207

153

128

114

103

103

88

66

90

170

153

140

146

148

150

115

103

223

2,260

75T 

350

250

280 

225 

200

170

150

7,685

256

1.43

1.60

Dec.

130

140

120

125

*110

170

450

1,080

572

383

320

983

1,520

948

560

770

836

590

400

450

383

370

338 

360

510

378 

295 

320

288

220

170

14,089

454

2.54

2.93

Jan.

185

180

180

190

180

170

175

185

170

160

ISO

*155

150

150

135

130

125

120

110

105

100

170

5.500 

1,580

715

555 

400 

300

250

220

210

10,685

345

1.93

2.22

Feb.

200

185

175

185

170

155

155

145

140

170

180

135

120

*150

125

120

120

120

115

110

115

110

105 

105

105

150 

1,200 ~758

-

5,583

199

1.11

1.16

Mar.

485

347

255

215

190

170

170

164

160

150

135

150

165

556

560

1,500 iio

566

440

388

347

396

440

*450

388

547 

334 

529

342

329

296

11,352

366

2.04

2.36

Apr.

280

1,540

1,180

602

560

1.940

1,470

828

614

510

490

515

652

460

565

352

410

495

572

680

876

632

440 

370

308

*276 

250 

57(5

342

356

18,715

624

3.49

3.89

May

284

226

201

189

169

153

138

125

110

105

114

172

180

150

285

495

258

291

172

1,150

1,500

572

392 

292

215

189 

325 

253

*183

150

128

8,828

285

1.59

1.85

June

121

114

164

114

114

82

175

150

99

75

60

56

52

51

45

41

36

51

28

32

29

24

21 

28

43

1,140 

"422 

198

224

239

4,006

154

0.749

0.83

July

130

82

59

551

1.100

610

243

148

107

*99

79

82

66

55

48

41

56

51

27

25

21

21

33 

27

26

24 

20 

47

112

144

276

4,168

134

0.749

0.87

Ait;.

~81 151

50

40

36

53

29

26

22

30

56

48

39

29

25

25

19

17

16

17

16

14

12

12

12

16 

25 

24

18

16

15

967

31.2

0.174

0.20

Sept.

14" 14

15

55

28

23

21

18

16

15

16

18

17

16

18

27

107

*58

57

50

26

26

123

Til

56

40 

31 

26

24

24

1,028

34.3

0.192

0.21

Calendar year 1956: Max 6,270 Mln 9.1 Mean 373 Cfsm 2.08 In. 28.42

Water year 1956-57: Max 3,300 Mln 12 Mean 247 Cfsm 1.38 In. 18.74

Peak discharge (base, 4,500 cfs). Jan. 23 (11:30 a.m.) 6,200 cfs (9.49 ft).

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Nov. 11, 19, 20, Nov. 24 to Dec 

Dec. 50 to Jan. 23, Jan. 27 to Feb. 27, Mar. 3-7, 9-11.

7, Dec. 19, 27,
180 CONNECTICUT RIVER BASIN

West River at Newfane, Vt.

Location.--Lat 42°59'45", long 72°38'20", on right bank 600 ft downstream from highway 

bridge and I mile northeast of Newfane, Windham County.

Drainage area. 308 sq mi.

Records available. September 1919 to September 1923, October 1928 to September 1957.

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. 33 years, 617 cfs.

Extremes.--Maximum discharge during year, 11,000 cfs Jan. 23 (gage height, 10.30 ft); maximum gage height not determined, occurred Jan. 23 (ice jam) during brief period of no 

gage-height record; minimum discharge, 26 cfs Aug. 25.

1919-23, 1928-57: 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 floodmar'cs, 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 ice effect or no gage-height record, which are fair.

Revisions (water years). WSP 756: Drainage area. WSP1231: 1922-23, 1929-31(M).

Rating tables, water year 1956-57, except periods of ice effect (gage 

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

Oct. 1 to Apr. 6 Apr. 7 to Sept. 3O

4.1 

4.3 

4.5 

5.0 

5.5

138

225

505

905

6.0 

7.0 

8.0 

9.0

1,410 

2,710 

4,550 

6,92O

79

145

230

5.0 520

5.5 910

6.0 1,410

7.0 2,710

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

108

100

104

119

159

163

238

482

280

202

163

146

142

127

119

111

100

97

97

91

86

86

86

104

115

*97

91

89

86

81

Zi

4,146

134

0.435

0.50

Nov.

112

244

886

369

265

212

184

163

159

142

108

130

212

245

202

212

207

220

184

142

218

5.110

1,250

635

380

440

410

358

300

285

11,784

393

1.28

1.42

Dec.

200

245

245

240

*216

240

463

1,560

966

812

480

1,320

2,000

1,650

952

1,100

1,380

981

642

690

620

612

561

568

790

642

519

533

488

300

250

22,063

712

2.31

2.66

Jan.

310

300

300

320

300

28O

300

310

285

260

245

*250

260

235

220

210

205

190

180

170

165

160

5,800

2,5OO

1,000

800

650

550

475

415

370

18,015

581

1.89

2.18

Feb.

340

320

3OO

330

290

265

280

25O

24O

310

320

240

225

*220

216

212

202

202

189

180

194

176

176

Tf2~ 167

256

1,9OO

1,400

-

9,552

341

1.11

1.15

Mar.

924

666

470

380

325

320

315

305

305

290

240

F75

265

551

952

2,O4O

1,730

1,070

824

714

628

7O6

798

*824

708

650

605

598

605

582

519

20,182

651

2.11

2.44

Apr.

492

2,280

2,110

1,120

1,030

5.070

2,640

1,490

1,140

928

919

910

1,180

865

692

653

692

796

892

1,030

1,280

1,060

740

625

554

*478

458

485

555

515

51,657

1,055

3.43

3.82

May

464

374

550

508

286

255

226

208

194

181

221

284

346

280

401

6B4

458

540

296

1,550

2.240

1,080

700

527

598

555

455

596

*515

260

221

14,567

465

1.50

1.75

June

203

190

240

198

185

145

194

262

173

137

107

98

90

84

92

84

72

62

58

56

53

48

44

42

BT

1,120

717

314

272

395

5,772

192

0.623

0.70

July

222

146

104

394

1.180

945

384

£35

169

*141

122

111

101

87

76

66

60

51

46

42

39

38

59

48

40

40

58

51

138

166

27 6

5,595

180

0.584

0.68

Aug.

250

138

84

66

64

56

49

44

40

59

85

79

69

55

44

42

58

55

52

34

52

35

50

27

2jJ

29

59

42

58

55

32

1,678

54.1

0.176

0.20

Sept.

29

28

29

34

46

40

34

33

30

29

29

30

30

29

30

39

115

*110

69

51

46

42

92

197

10T

72

56

48

42

40

1,603

53.4

0.173

0.19

Calendar year 1956: Max 11,9OO Min 23 Mean 627 Cfsm 2.O4 In. 27.72

Water year 1958-57: Max 5,800 Mln 26 Mean 401 Cfsm 1.30 In. 17.67

Peak discharge (base, 8,80O cfs). Jan. 23 (1:30 p.m.) 11,000 cfs (1O.3O ft).
CONNECTICUT RIVER BASIN 181

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 1957.

Gage.--Water-stage recorder. Datum of gage is at mean sea level, datum of 1929. Prior 

to Jan. 20, 1948, at datum 94.13 ft higher.

Average discharge.--13 years (1944-57), 10,720 cfs (adjusted for storage).

Extremes. Maximum discharge during year, about 30,000 cfs Jan. 24 (elevation, 192.36 

ft, backwater from ice); minimum daily, 260 cfs June 16.

1936, 1938, 1944-57: 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; irinimum 

daily, 99 cfs Oct. 8, 1944.

Remarks. Kecords good except those below 1,000 cfs, which are fair. Flow regulated by 

powerplants and by First Connecticut and Second Connecticut Lakes, Lake Francis, Moore 

Reservoir and Comerford Station Pond (see p. 233), and other reservoirs (coirbined 

usable capacity, about 20 billion cubic feet).

Revisions. WSP 1031: Drainage area.

Discharge, In cubic feet per second, water year October 1956 to September 19E"7

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

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

4,990 

5,230

5,170

5,850

6,390

2,810

4,500

7,500

10,200

10,500

8,560

5,980

2,380

1,390

6,780

6,880

6,410

6,380

6,110

1,290

862

5,100

6,410

4,780

4,040

4,340

570

270

*3,630

3,460

3,530

152,092

4,906

-692

Nov.

5,520

7,110

3,290

1,690

4,740

4,540

4,510

4,750

4,720

1,810

720

1,410

4,9OO

4,730

5,160

5,250

3,190

3,620

5,800

6,290

6,2OO

14,100

16,400

15,200

11,200

8,070

7,790

8,500

7,680

7,770

186,660

6,222

-104

Dec.

5,150 

2,560

6,550

5,700

6,320

6,300

7,560

8,750

12,000

10,800

9,530

15,100

10, 900

12,400

12,400

7,930

9,020

12,300

11,200

8,510

9,620

8., 640

7,460

8,530

7,150

7,550

8,630

6,710

4,970

4,210

6,O5O

258,320

8,335

-8O.O

Jan.

2.090 

6,400

6.OOO

6,060

4,000

5,550

7,540

6,490

5,940

5,700

5,100

3,070

2,690

5,700

4,700

4,800

4.3OO

5,240

4,660

3,070

5,800

5,800

18,000

£8,000

18 , OOO

15,000

13,000

11,OOO

10,500

10,500

9,OOO

241,300

7,784

-475

Feb.

8,000

10,000

4,800

6,800

7,800

8,OOO

6,600

6.OOO

7,8OO

5,000

6,730

6,390

6,820

6,190

6,370

*7,110

3,040

5,860

5,870

6,500

6,460

5,770

4,730

2.200

6,880

6,520

13,400

19 , 100

-

196,940

7,034

-1,259

Mar.

15 , 900 

14,000

11,700

11,6OO

10,900

10,500

11,600

9,050

1O,9OO

5,450

7,810

9,670

7,660

10,600

12,200

18,300

19, 6OO

14 , 5 OO

15,500

14,400

14,400

13 , 600

13,600

13,700

13,600

*13,400

13,400

13,400

13,200

15,000

9,560

386,880

12,480

-1,231

Apr,

8,960

12,500

18,400

15,800

16,100

20,800

21,000

17 , 000

16,500

14,900

15,5OO

15,400

14,600

13,900

13,700

12,800

12,000

13 , OOO

13,200

15,500

16,800

20,200

22,4OO

19 8OO

17*800

15,000

*L3,400

15,300

12 , 900

»

465,160

15,510

+1,984

May

11,100 

9,150

10,600

7,410

2,280

7,660

7,480

6,890

7,350

7,250

4,170

2,450

6,540

6,780

8,060

12,200

13,2OO

12,500

4,820

8,98O

22.500

16,900

14,600

13,500

13,2OO

4,760

8,480

*11,000

10,000

6,240

7,270

285,320

9,204

+ 1,164

June

5,340 

5,050

7,140

7,300

6,440

7,010

7,160

3,980

685

6,870

5,900

5,510

4,550

5,030

1,950

260

3,630

3,310

2,520

2,880

1,940

265

346

3,370

3,120

6,370

10.200

9,250

6,4OO

6,700

140,454

4,682

+225

July

5,980 

5,450

*4,600

5,560

7,7OO

12,100

12,200

11,700

7,500

6,020

5,620

5,540

5,150

1,640

3,860

5,650

5,260

5,220

3,710

3,010

883

4,O4O

9,350

7,450

5,790

6,290

2,29O

678

3,740

4,250

6,570

166,581

5,374

+352

Aug.

6.720 

4,450

1,190

406

3,970

3,670

3,670

3,590

3,550

1,530

964

4,410

4,370

4,010

4,670

4,500

*497

310

3,510

5,470

5,360

3,000

2,100

321

510

2,950

5,500

1,780

1,660

2,120

526

84,664

2,731

-362

Sept.

321 

316

3,570

3,OSO

2,170

1,460

343

345

2,550

2,410

2,650

2,260

2,200

558

343

3,070

2,290

2,190

2,770

1,940

348

295

6,280

5,740

6,540

2,920

*2,930

1,010

505

2,230

65,192

2,173

-219

Adjusted for change in ervolr contents

Mean 

Cfsm 

In.

4,215 

0.673 

0.78

6,118 

0.976 

1.09

Calendar year 1956 : 

Water year 1956-57 :

8,253 

1.32 

1.52

7,309 

1.17 

1.34

5,775 

0.992 

0.96

11,249 

1.80 

2.07

17,490 

2.79 

3.11

10,370 

1.65 

1.91

Observed

Max 75,600 Mln 270 Mean 10,O50 

Max 28,000 Mln 260 Mean 7,204

4,907 

0.783 

0.87

5,725 

0.914 

1.05

2,369 

0.378 

0.44

1,954 

0.312 

0.35

Adjusted

Mean 1O,270 Cfsm 1.64 In. 22.31 

Mean 7,150 Cfsm 1.14 In. 15.49

Peak discharge (base, 5O,OOO cfs.--No peak above base

* 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 and Comerford Station Pond, Union Village Rese-volr, 

4 reservoirs in Mascoma River basin, and Sunapee Lake.

Note.--Stage-discharge relation affected by Ice Jan. 2, 3, 10, 11, 14-17, Jan. 21 to Fjb. 1O.
182 CONNECTICUT RIVER BASIN

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 1957.

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. 35 years, 125 cf s .

Extremes. Maximum discharge during year, 568 cfs Jan. 23 (gage height, 4.68 ft); maximum 

gage height not determined, occurred Jan. 23 (ice jam); minimum discharge , 4.2 cfs 

Sept. 1, 2.

1922-57: Maximum discharge, 5,220 cfs Sept. 21, 1938 (gage heig'it, 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 heig'it, 12.80 ft 

Mar. 19, 1936; minimum discharge, about 1 cfs Oct. 6, 1922, July 10, 1923, Nov. 14, 

1952.

Remarks . Records good except those for periods of ice effect, which are fair. Plow regulated by reservoir above station. Diurnal fluctuation caused by powerplant above 

station prior to 1938.

Revisions (water years ) . WSP 661: Drainage area. WSP 781: 

27(M), 1928, 1929-30{M), 1931, 1932 (M).

1934 (M). WSP 1231: 1923-

Oct. 1-12

1.7 

2.0

sandbags Oct. 12)

Oct. 13 to Sept. 30

1.29

1.3

1.4

1.5

4.2

4.3 

6.3 

9.2

1.7 

2.0 

2.5 

3.0

4.0 

5.0

387

715

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

22

21

21

23

20

29

35

32

29

25

21

21

20

19

18

*17

16

15

14

14

14

14

15

14

13

13

13

13 

12

12

589

19.0

0.267

0.31

Nov.

12

15

18

15

14

13

13

13

14

14

12

13

17

18

18

18

19

21

21

21

27

160

188

156

114

92

78

66

57 

47

1,304

43.5

0.612

0.68

Dec.

45

*43

36

36

34

36

38

61

87

90

89

168

276

292

E47

209

184

160

120

115

103

97

84

101

110

100

95

90

80 

58

53

3,337

108

1.52

1.75

Jan.

49

46

47

50

45

42

43

44

46

40

36

35

35

33

32

31

30

29

28

27.

27

32

350

526

427

329

278

242

193 

160

140

3,472

112

1.58

1.82

Feb.

120

105

95

87

80

72

66

62

58

55

51

46

44

39

*36

35

34

33

32

31

29

28

28

27~ZB

40

235

385

-

1,981

70.8

O.996

1.04

Mar.

299

200

145

120

90

75

62

58

57

64

60

58

56

77

135

276

302 24"?

193

163

146

163

182

191

*175

165

154

153

154 

154

146

4,522

146

2.05

2.37

Apr.

136

242

368

319

271

290

326

297

269

236

227

219

230

209

184

158

153

156

163

173

184

180

163

146

132

118

107

109 *109

102

5,976

199

2.80

3.13

May

91

77

68

62

59

54

46

40

36

35

39

46

49

46

60

100

104

84

66

109

272

249

197

156

118

94

97

133

116

94

78

2,875

92.7

1.30

1.50

June

69

67

*72

63

53

*45

48

46

39

32

27

24

23

20

18

17

16

15

21

29

23

18

16

14

If

*50

88

67

57

46

1,137

37.9

0.533

0.59

July

37

28

23

34

45

52

43

35

28

24

21

20

19

20

20

16

14

13

12

12

11

10

9.7

9.2

8.8

8.2

7.9

8^

12

17

28

646.3

20.8

0.293

0.34

Aug.

24

17

14

12

12

10

8.8

7.9

7.6

11

13

12

11

9.2

7.9

8.2

8.2

7.6

6.5

6.S

6.1

5.8

5.4

5.2

5.0

5.2

5.2

5.0

4.7

4.5

4^5

270.8

8.74

0.123

0.14

Sept.

4.3

4.2

T^

5.4

5.2

4.9

6.3

7.6

6.1

5.8

5.8

5.6

5.8

5.8

5.8

7.6

~5.2 12

7.3

6.5

6.1

5.8

9.7

*11

9.2

9.7

7.6

7.6

6.3

5 .8

204.9

6.83

0.096

0.11

Calendar year 1956: Max 1,720 Min 4.4 Mean 119 Cfsm 1.67 In. 22.73

Water year 1956-57: Max 526 Mln 4.2 Mean 72.1 Cfsm 1.01 In. 13.78

Peak discharge (base, 1,000 cfs). No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Nov. 25, Nov. 29 to Dec. 1, Dec. 5, 10, 11, 19-23, 

Dec. 25 to Jan. 23, Jan. 30 to'Feb. 15, Feb. 27, 28, Mar. 2-7, 10, 11, 13.
CONNECTICUT RIVER BASIN 183

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

Location. Lat 42°59'45", long 72°18'40", on right bank 600 ft downstream 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 1957.

Gage.--Water-stage recorder and concrete control. Datum of gage is 480.00 ft above mean 

sea level, datum of 1929 (Corps of Engineers bench mark).

Average discharge.--12 years, 170 cfs (adjusted for storage).

Extremes.--Maximum discharge during year, 579 cfs Jan. 28 (gage height, 7.50 ft); minimum 

daily, 4.8 cfs Sept. 2.

1945-57: Maximum discharge, 1,090 cfs Mar. 31, Apr. 9, 1950 (gage height, 8.94 ft); 

minimum daily, 0.8 cfs Dec. 4-7, 1948.

Remarks. Records excellent. Flow regulated by Surry Mountain Reservoir (see p. 233).

Rating table, water year 1956-57 (gage height, In feet, 

and discharge, in cubic feet per second)

4.1

4.2 

4.4 

4.7 

5.0

4.3

5.9

10

20

36

5.5 

6.0 

6.5 

7.0 

7.5

82

154

257

402

579

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

35

32

31

31

37

31

45

51

45

39

35

32

30

28

27

26

*24

24

22

20

20

20

20

21

20

18

18

18

18

17

IT

852

27.5

-0.04

Nov.

18

23

31

26

22

20

20

20

24

22

19

22

26

28

26

26

28

31

30

28

36

210

227

197

150

121

114

65

28

*30

1,668

55.6

+7.60

Dec.

30

3T

31

32

32

32

32

48

96

119

128

157

250

359

374

402 315"

188

124

141

162

182

157

144

149

151

149

148

148

110

75

4,496

145

+5.41

Jan.

76

76

60

64

85

83

*83

76

72

72

72

72

71

64

55

50

50

50

50

49.

49

50

71

112

330

489

482

533

5H

321

161

4,442

143

+0.30

Feb.

103

116

115

103

103

103

102

87

81

80

81

*67

61

61

62

62

61

61

60

52

48

48

47

40

36

45

159

366

-

. _ _ 

2,410

86.1

+5.70

Mar.

405

268

230

180

132

119

119

118

105

100

88

81

95

114

178

364

514

334

344

374

295

250

273

284

260

*240

227

227

227

223

209

6,977

225

-17.7

Apr.

199

280

448

428

356

359

421

468

377

309

312

295

301

281

242

216

205

205

209

214

220

216

199

184

169

157

146

152

*152

144

7,864

262

-0.23

May

132

116

104

96

90

83

74

65

58

56

70

86

85

76

108

138

140

121

102

151

312

304

230

184

148

124

118

151

136

115

3,871

125

-0.11

June

87

83

*90

78

*41

78

61

60

51

44

38

34

30

28

26

23

21

19

28

43

32

25

20

17

*T9

66

~§2 114

76

64

1,488

49.6

-0.08

July

51

40

31

46

60

68

58

46

38

32

28

26

24

22

25

20

17

16

14

13

13

13

16

15

15

14

13

14

15

21

44

868

28.0

-0.04

Avi?.

34

24

18

16

16

14

12

10

9.3

16

18

16

14

12

11

11

11

9.8

8.7

*8.2

7.6

7.8

6.8

6.3

6.1

7.6

7.0

6.3

5.7

5.6

5_,_3

3S1.1

11.6

-0.04

Sept.

4.9

4.8

5.6

5.9

6.1

5.7

7.0

13

10

8.5

9.1

8.7

8.0

8.2

7.8

10

 16

15

12

9.8

9.1

8.5

It

*16

13

13

11

10

9.6

8.5

__

288.8

9.63

0

Adjusted for change in contents in Surry Mountain Reservoir

Mean

Cfsm

In.

27.5 

0.272 

0.31

63.2

0.626 

0.7C

Calendar year 1956 : 

Water year 1956-57 :

150 

1.49 

1.72

144 

1.43 

1.64

91.8 

0.909 

0.95

207 

2.05 

2.37

262 

2.59 

2.89

125 

1.24 

1.42

Observed

Max 988 Min 5.7 Mean 167 

Max 533 Mln 4.8 Mean 97.5

49.5 

0.490 

0.55

28.0 

0.277 

0.32

11.6 

0.115 

0.13

Adjusted

9.63 

0.095 

0.11

Mean 167 Cfsm 1.65 In. 22.50 

Mean 97.5 Cfsm 0.965 In. 13.11

* Discharge measurement made on this day..

t Change in contents, equivalent in cubic feet per second, in Surry Mountain Reservoir.
184 CONNECTICUT RIVER BASIN

Otter Brook near Keene, N. H.

Location. Lat 42°57'55", long 72°14'00", on left bank 10 ft downstream from bridge near 

State Highway 9, 3| miles northeast of Keene, Cheshire County, and 3j miles upstream 

from Minnewawa Brook.

Drainage area. 42.3 sq mi.

Records available. October 1923 to September 1957.

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. 34 years, 71.0 cfs.

Extremes. Maximum discharge during year. 480 cfs Jan. 23 (gage height, 4.40 ft); maximum 

gage height, 6.34 ft Jan. 23 (ice jam); minimum discharge. 1.0 cfs Sept. 2.

1923-57: 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, 

that of Sept. 2, 1957.

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

regulated at times by Granite Lake above station.

Revisions (water years).--WSF 871: Drainage area. WSP 1231: 1924(M), 1928, 1933-34(M).

Rating tables, water year 1956-57, except periods of ice effect (gage 

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

Oct. 1 to Jan. 22

2.3 4.8

2.4 7.0

2.6 13

Note. Same as 

following table 

above 2.6 ft.

Jan. 23 to Sept. 30

2.0

2.1

2.2 

2.4 

2.6

1.1

1.7

2.6

3.8

7.4

13

2.8 

3.0 

3.2 

3.5 

3.8 

4.1

21

37

60

113

203

330

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Itatal

Mean

Cfsm

In.

Oct.

8.6 12 

33

37

42

36

48

45

42

38

37

35

33

32

30

30

29

28

26

26

25

24

25

26

24

22

20

19

*17

15

9.0

873.6

28.2

0.667

0.77

Nov.

5.7 7TO~ 

11

8.6

7.3

6.3

5.9

6.3

8.9

7.5

6.2

7.5

11

19

21

20

20

15

13

12

20

-89 143

56

40

38

36

32

28

24

725.2

24.2

0.572

0.64

Dec.

*19

21

20

20

17.

20

24

46

50

42

37

119

154

129

98

92

90

78

65

62

58

54

50

56

64

56

53

50

45

34

30

1,753

56.5

1.34

1.54

Jan.

28

26 

28

29

26

25

25

26

27

23

21

21

21

20

19

18

18

17

17

ii

16

20

330 316"

230

180

155

130

105

90

75

2,098

67.7

1.60

1.84

Feb.

65

60 

54

49

44

40

37

35

32

30

28

26

24

23

22

21

21

20

19

18

17

17

16

TS

17

25

145

185

1,106

39.5

0.934

0.97

Mar.

129

95 

83

65

50

42

37

36

35

38

36

35

38

62

98

196 V79~

136

116

100

96

*105

116

118

111

102

102

102

102

100

92

2,752

88.8

2.10

2.42

Apr.

90

174 

211

151

134

198

214

176

160

142

136

142

151

129

109

100

98

98

98

98

94

89

78

*72

65

60

57

65

60

56

3,505

117

2.77

3.08

May

49

42 

40

37

35

32

30

26

22

25

47

62

52

46

62

66

53

47

42

68

113 "84

69

58

48

45

53

74

58

48

40

1,573

50.7

1.20

1.38

June

36

48 

*54

4T

35

28

27

23

20

19

17

14

13

11

9.7

8.8

7.9

7.2

7.0

9.0

7.0

5.8

5.1

*3.9

4T7

25

25

14

13

13

552.1

18.4

0.435

0.49

July

11

8.1 

7.0

ii

18

15

9.5

8.1

7.2

7.0

6.4

5.8

5.2

4.9

4.4

3.6

3.5

3.4

3.1

2.8

2.3

2.2

2.8

2.7

2.4

2.1

2.0

2.1

3.9

16

12

203.5

6.56

0.155

0.18

Aug.

6.8

5.1 

4.4

4.4

4.5

3.5

3.0

2.7

2.6

3.0

3.5

3.6

2.6

2.8

2.6

*2.7

2.4

2.4

2.3

2.4

2.4

2.1

1.8

1.5

1.4

1.4

1.3

1.2

1.2

TTT

83.8

2.70

0.064

0.07

Sept.

1.2

fci

4.6

9.0

11

12

18

13

9.7

9.5

8.3

7.2

6.4

5.8

5.8

7.0

5.6

4.4

3.9

3.8

3.8

20

*10

6.6

5.4

4.4

4.1

3.6

3,5

210.1

7.00

0.165

0.18

Calendar year 1956 : Max 1,160 Min 1.2 Mean 74.2 Cfsm 1.75 In. 23.87

Water year 1956-57 : Max 330 Min 1,1 Mean 42.3 Cfsm 1.00 In. 13.56

Peak discharge (base, 600 cfa). No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 24, 25, Nov. 29 to Dec. 1, Dec. 5, 19, Dec. 22 

to Jan. 23, Jan. 25 to Feb. 28, Mar. 2-14 (no gage-height record Jan. 31 to Feb. 9). Discharge in 

cubic feet per second per square mile and runoff in inches during October do rot represent natural 

flow because of regulation.
CONNECTICUT RIVER BASIN 185

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

Location.--Lat 42"52'20", long 72°12'55", 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 1957. 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. 37 years, 59.5 cfs.

Extremes. Maximum discharge during year, about 475 cfs Jan. 23 (occurred during period 

of no gage-height record); maximum gage height, 5.61 ft Jan. 23 (ice Jam); minimum 

discharge, 1.8 cfs Sept. 3, 4; minimum daily, 2.0 cfs Sept. 3, 4, 30.

1920-57: 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 slopearea 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, 

whieh are fair. Flow regulated by powerplant and several small reservoirs above 

station.

Revisions (water years).--WSP 641: 1925(M). 

24(M), 1926(M), 1929, 1933-34(M), 1939.

WSP 871: Drainage area. WSP 1231: 1921-

Rating tables, water year 1956-57, except periods of ice effect (gage 

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

Oct. 1 to Nov. 21 Nov. 22 to Sept. 30

1.8 

2.0 

2.3 

2.6

8.4

19

28

1.69 2.0

1.7 2.1

1.9 5.5

2.2 13

2.5 

3.0 

3.5 

3.8

22 4.0 122

4.3 215

4.6 350

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

 Ktal

Mean

Cfsm

In.

Oct.

8.4

11

13

14

22

20

20

24

Zo

16

13

11

10

7.5

7.1

8.7

9.2

9.0

8.7

8.2

6.4

5.8

7.1

*8.2

8.2

8.0

8.0

7.3

5.8

6.4

7.3

339.3

10.9

0.303

0.35

Nov.

8.0

8.7

17

13

12

12

11

10

10

10

8.7

7.3

375

13

12

11

12

12

12

13

22

290

1ST

64

37

32

33

30

25

22

934.2

31.1

0.864

0.97

Dec.

*19

16

rr

17

16

16

20

30

33

29

26

113

T30" 161

80

76

90

71

60

48

42

40

39

46

82

70

57

44

45

35

33

1,601

51.6

1.43

1.65

Jan.

32

31

30

29

28

27

27

28

29

30

27

26

26

22

22

23

22

21

20

19

19

32

330

3QO

210

160

130

110

90

ftnOU

70

2,050

66.1

1.84

2.12

Feb.

60

55

50

47

44

42

40

39

37

38

*38

32

29

26

24

23

22

22

22

21

20

19

18

19

22

41

212

160

1,222

43.6

1.21

1.26

Mar.

101

71

55

50

38

35

32

3T

40

40

37

35

45

70

104

242

2lT

141

109

84

80

*90

100

96

101

98

96

94

103

86

83

2,602

83.9

2.33

2.69

Apr.

86

152

194

125

107

214

208

146

122

101

109

120

114

96

88

77

55

68

67

55

56

66

54

*48

38

41

35

32

40

37

2,751

91.7

2.55

2.84

May

31

26

25

24

21

21

22

20

19

2?J

50

101

85

73

88

94

70

51

34

66

141

93

60

48

31

29

*109

"90- 166

53

42

1,803

58.2

1.62

1.86

June

35

38

68

39

31

25

31

26

22

19

17

15

14

13

13

16

14

13

16

33

22

16

9.0

7.7

15

47

8856-

42

34

834.7

27.8

0.772

0.86

July

*26

19

12

26

35_

30

23

21

12

9.7

7.7

6.8

5.9

5.9

5.9

5.9

5.9

5.3

4.6

4.4

3.6

5.5

376

5.8

4.2

5.8

4.9

5.6

6.8

5.7

4.6

321.9

10.4

0.289

0.33

Avg.

4.7

4.6

4.0

3.6

3.1

3.0

3.5

5.8

4.6

6.5

3.1

2.7

2.6

2.7

2.8

3.0

5.0

2.6

2.4

2.4

2.4

2.8

5.0

5.0

2.7

2.4

2.5

273

2.4

2

c

. b 

2.7

98.9

5.19

0.89

0.10

Sept.

2.4

2.1

Z^0_

2.0

2.3

2.6

3.3

2.7

2.1

2.1

2.8

3.4

3.6

3.4

2.5

*2.9

5.5

5*1

4.7

4.2

3.6

2.6

5.6

4.9

4.7

4.6

4.4

3.8

2.4

2.0

100.7

3.36

0.093

0.10

Calendar year 1956 : Max 1,000 Min 2.5 Mean 65.8 Cfsm 1.83 In. 24.89

Water year 1956-57 : Max 330 Min 2.0 Mean 40.2 Cfsm 1.12 In. 15. IT

Peak discharge (base, 550 cfs). No peak above base.

* Discharge measurement made on this day.

Note. No gage-height record Jan. 15-22, Jan. 24 to Feb. llj discharge estimated on baris of 

1 discharge measurement, weather records, and records for Ashuelot River near Gilsum, Ashuelot River 

at Hinsdale, and Otter Brook near Keene. Stage-discharge relation affected by ice Nov. 25, Dec. 1, 

5, 11, 19, 20, 26, 27, Dec. 30 to Jan. 8, Jan. 23, Feb. 12-15, 18, 20-22, 28, Mar. 3-7, 10, 11, 13, 

and at times during periods of no gage-height record.

505692 0-59-13
186 CONNECTICUT RIVER BASIN

Ashuelot River at Hinsdale, N. H.

Location.--Lat 42 047'05", 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 It miles 

upstream from mouth.

Drainage area. 420 sq mi.

Records available.--March 1907 to December 1911, July 1914 to September 1957.

Gage. Water-stage recorder. Datum of gage is 201.32 ft above mean ses level (levels by 

(Torps of Engineers). Prior to Sept. 29, 1933, chain gage on highway bridge at same 

datum.

Average discharge. 47 years, 656 cfs (adjusted for storage).

Extremes.--Maximum discharge during year, 2,010 cfs Jan. 24 (gage height, 5.88 ft); minimum, 21 cfs Sept. 30; minimum daily, 25 cfs Sept. 6.

1907-11, 1914-57: 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 (backwater 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, an<? those computed 

From twice-daily tape-gage readings, which are good. Plow regulated1 by mills above 

station. High flow affected by Surry Mountain Reservoir since 1942 (see p. 233).

Revisions (water years).--WSP 661: 

1914-34. WSP 1301:

Drainage area. WSP 781: 1907-11 calendar years, 

1915(M), 1917-19(M), 1921-33(M). WSP 1331: 1?20(M).

Rating table, water year 1956-57, except periods of ice effect (gage 

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

2.6 

2.9 

5.2 

3.5 

3.8

24

51

97

172

283

4.1 

4.5 

5.0 

6.0

445

7OO

1,070

2,170

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

i

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

(t)

Oct.

146

172

160

185

224

242

212 

271

285

255

205 

205

192

155 

155

172

172 

169

160

143

114

105

136

152 

 149

140

156

104

101

116

120

5,231

169

-0.04

Nov.

140

169

227

195

165

146

158 

155

158

158

m116

128 

158

140

145 

155

160

149

169

645

1.090

548 

550

493

469

459

380

279

8,302

277

+7.60

Dec.

220

185 195"

220

209

*209

224 

271

556

385

591 

594

1,030

1.260 

1,160

1,090

1,090 

960

680

661

654

642

57O

668 

798

780

680

721

668

518

410

18,479

596

-1-5.41

Jan.

400

390

380

370

370

530

520 

540

560

550

340 

540

500

500 

280

300

290 

280

270

240

240

310

1,000

1.860 

1,770

1,610

1,420

1,240

1,200

1,090

878

19,168

618

+ .50

Feb.

668

585

557

544

558

512

487 

481

457

475

460 

450

397

374 

358

 350

325 

330

336

306

280

270

246

258 

258

564

977

"^ 

 

12,931

462

+5.70

Mar.

1,410

1,170

840

742

661

585

570 

564

564

531

480 

505

465

659 

900

1,510

1.910 

 1,730

1,320

1,250

1,200

1,140

1,160

1,180 

1,140

 1,050

1,010

982

952

958

848

29,892

964

-17.7

Apr.

812

915

1,540

1,590

1,280

1,550

1.850 

1,670

1,500

1,540

1,270 

1,240

1,200

1,120 

1,010

952

885 

848

855

855

765

742

700

668 

655

609

 585

499

5§4

518

30,081

1,003

-0.23

May

487

445

405

368

311

311

525 

297

267

227.

388 

616

728

602 

564

707

707 

590

469

505

975

1,110

915

735 

596

469

570

*840

840

648

493

17,508

565

-0.11

June

427

368

495

495

591

310

316 

311

246

224

224 

209

195

179 

179

152

146 

138

146

182

158

158

128

123 

99.

114

374

465

550

242

7,518

251

-O.08

July

212

185

 152

212

242

231

165 

166

158

140

120

112

110

99 

98

88

85 

79

79

76

78

73

70

67 

66

68

72

72

72

67

72

3,582

116

-O.O4

Aug.

78

li

78

72

75

67

66 

67

66

64

64 

61

56

58 

58

58

59 

58

56

52

51

54

51

55 

51

56

52

51

51

1,862

60.1

-0.04

Sept.

55

58

49

35

27

25

33

45

58

61 

65

64

65 

58

47

64 

73

72

66

61

58

76

118 

92

74

66

61

*60

48

1,756

58.5

0

Adjusted for change in contents in Surry Mountain Reservoir

Mean 

Cfsm 

In.

169 

0.402 

.0.46

284 

0.676 

0.76

Calendar year 1956: 

Water year 1956-57:

602 

1.43 

1.65

619 

1.47 

1.70

468

1.11 

1.16

947 

2.25 

2.60

1,002 

2.59 

2.66

Observed

Max 5,550 Min 57 Mean 675 

Max 1,910 Min 25 Mean 428

565 

1.55 

1.55

251 

0.598 

0.67

116 

0.276 

0.52

60.0 

0.145 

0.16

58.5 

0.159 

0.16

Adjusted

Mean 675 Cfsm 1.61 In. '21.85 

Mean 428 Cfsm 1.02 In. 13.85

Peak discharge (base, 5,000 cfs). No peak above base.

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second,in Surry Mountain Reservoir.

Note. Discharge for period Oct. 1-25 computed from twice-daily tape-gage readings. Stagedischarge relation affected by Ice Dec. 1, 19, 26, 27, Dec. 51 to Jan. 25, Feb. 11, 12, 21, 22, 

Mar. 11.
CONNECTICUT RIVER BASIN 187

Tarbell Brook near Wlnchendon, 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 ff miles 

northwest of Wlnchendon, Worcester County.

Drainage area. 18.2 sq mi.

Records available. May 1916 to September 1957. 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, c"atum of 

1929. May 29 to June 29, 1916, staff gage; June 30 to Dec. 12, 1916, water-etage 

recorder; and Dec. 13, 1916, to June 26, 1917, staff gage, at site 450 ft dovnstream 

at same datum.

Average discharge. 41 years, 30.0 cfs. 

Ext s.. Maximum discharge during year, 103 cfs Apr. 6 (gage height, 7.53 ft); minimum, 

u.a cfs Sept. 22.

1916-57: 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 study at eortrol 

section; minimum, 0.1 cfs Aug. 25, 1924.

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

which are fair. Flow regulated by Pearly and Sip Ponds, Damon Reservoirs, ard 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 1956-57, except periods of Ice effect (gage

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

(Backwater from beaver dam Sept. 3-5)

Oct. 1 to Sept. 5 Sept. 5-30

4.9

5.0

5.1 

5.3 

5.6

0.6

1.3

2.2

4.9

11

6.0 22

6.5 42

7.0 68

7.5 101

5.0

5.1 

5.3 

5.5 

5.7

1.0

1.8

4.0

6.8

10

Discharge, in cubic feet per second, water year October 1956 to September 19f7

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.

9.9

9.9

11

12

11

7.6

9.0

13

12

12

14

IT

7.0

5.9

8.6

8.6

8.0

8.2

10

6.4

4.6

7-2 

8.6

6.6

8.9

6.8

5.1

3.9

Iff

5.1

261.9

8.45

0.464

0.54

Nov.

6.8

10

6.8

4.8

6.2

6.3

5.8

6.8

9.8

6.4

4.5

775

8.9

5.6

8.4

6.9

5.2

5.4

5.2

8.3

12

18 

17

15

15

20

£1

IS

12

13

297.0

9.90

0.544

O.61

Dec.

9.3

7.8

10

*11

11

11

12

8.8

8.2

12

12

22

25

46

46

45

48

35

38

32

30

25 

26

29

34

39

35

31

28 

28

- 26

791.1

25.5

1.40

1.62

Jan.

248- 9

18

V

16

18

17

15

15

16

13

11

12

12

11

a!2

al2

alo

al2

al3 

a40

77

7T

58

46

44

38 

35

31

764

24.6

1.35

1.56

Feb.

27

24

23

26

24

22

20

20

21

16

20

*20

19

17

14

12

10

17

16

15

15.

14 

10

18

25

32.

 :_..

523.7

18.7

1.03

1.07

Mar.

44

32

26

28

27

23

22

21

22

ii

24

22

23

24

25

46

eg" 66

56

52

50

48 

50

50

49

45

42

*40

38 

39

36

1,151

37.1

2.04

2.35

Apr.

36

40

58

59

56

83

97

86

79

66

6O

60

58

55

52

40

41

37

32

33

32

31 

25

22

21

20

16

ii

20 

18

1,347

44.9

2.47

2.75

May

*16

18

13

9.9

14

14

13

13

13

14

IS

40

37

36

46

38

24

24

37

47

4? 

37

31

23

23

27

30

30 

22

20

779.9

25.2

1.38

1.59

June

14

13

18T? *16

13

15

10

8.4

12

10

11

11

9.4

6.4

5.6

1O

8.6

15

16

11

8.2 

7.0

9.9

11

14

*16

16

11

10

353.5

11.8

0.648

0.72

July

14

TT

9.1

7.6

6.3

5.6

4.6

7.7

11

10

8.8

7.4

4.9

7.2

5.7

7.2

7.5

5.1

4.1

5.0 

6.5

5.4

4.9

4.6

4.5

4.6

5.1 

5.6

6.3

206.4

a. 66

0.366

0.42

Aug.

5.2

4.5

5.0

4.2

3.3

*1.3

.9

T7T

1.2

1.4

1.6

3.0

2.5

2.2

2.2

2.8

2.8

2.9

6,,!

1.9

1.2

1.5 

1.6

1.7

2.5

2.5

3.1

3.8

4.5 

4.5

4.1

87.9

2.84

0.156

0.18

Sept.

2.6

2.0

2.7

1.8

 1.8

1.5

1.8

1.9

2.0

1.7

1.9

1.7

2.4

2.1

1.3

1.5

3.0

3.7

3.0

4.4

3.8

iti

2.S

4.9

7.2

6.9

6.4

8.2 

9.3

96.8

3.23

0.177

0.20

Calendar year 1956 : Max 462 Min 1.8 Mean 31.8 Cfam 1.75 In. 23.78

Water year 1956-57 : Max 97 Min 0.9 Mean 18.2 Cfsm 1.00 In. 13.61

Peak discharge (base, ISO cfa). No peak above base.

* Discharge measurement made on this day.

a No gage-height recordj discharge estimated on basis of weather records and records for Millers 

River near Wlnchendon, Priest Brook near Winchendon, and Ware River near Barre.

Note. Stage-discharge relation affected by ice Dec. 16, 23, Dec. 25 to Jan. 17, Jan. 27, Jan. 30 

to Feb. 15, Feb. 21, 22, Mar. 3, 11, and probably during period of no gage-height record.
188 CONNECTICUT RIVER BASIN

Millers River near Wlnchendon, Mass.

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 Winchendon, 

Worcester County.

Drainage area.--83.0 sq mi.

Records available . June 1916 to September 1957. March to May 1917, monthly discharge 

only, published in WSP 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. 41 years, 143 cfs.

Extremes. Maximum discharge during year, 792 cfs Jan. 23 (gage height, 7.04 ft); minimum 

daily, 5.9 cfs Sept. 1,2.

1916-57: Maximum discharge, 8,500 cfs Sept. 22, 1938 (gage heigj'-,, 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. Flow regulated by Lake Monomonac and other reservoirs and, prior to 

1957, by powerplant.

Revisions (water years). WSP 451: 1916. WSP 871: Drainage area. WSP 1051: 1919, 

1920-21(M), 1922-24, 1928(M), 1933-34.

Rating tables, water year 1956-57, except periods of Ice effect (gage 

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

Oct. 1 to Jan. 23 Jan. 24 to Sept. 30

3.7 12

3.8 19

4.0 39

4.2 70

4.5 

5.0 

6.0 

7.0

139

311

524

780

3.56

3.6

3.7

3.8 

4.0

5.6

7.0

12

20

43

4.2 

4.5 

5.0 

6.0 

7.0

73

140

311

524

780

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

95

90

88

84

72

72

86

92

86

95

113

106

92

80 

70

40

32

29

27

25

22

22

24

24

24

*22

21

19

11

19

19

1,707

55.1

0.664

0.76

Nov.

20

31

52

47

37

31

28

28

32

37

27

28

30

27 

25

24

22

24

25

24

31

117

121

97

72

70

74

70

60

55

1,366

45.5

0.548

0.61

Dec.

47

42

42

*45

42

42

46

46

47

63

60

120

170

158"

167

184

177

150

136

121

111

111

111

139

145

130

116

106

92

90

3,247

105

1.27

1.45

Jan.

86

80

80

85

84

80

85

80

76

72

70

68

66

64 

*62

62

62

60

60

60

60

125

600

650

57?

522

440

390

355

310

260

5,733

185

2.23

2.57

Feb.

220 190"

170

150

130

110

101

96

92

92

90

88

*80

78 

74

68

63

61

63

58

56

55

54

55

60

75

187

180

-

2,796

99.9

1.20

1.25

Calendar year 1956: Max 1,360 Mln 6.6

Mar.

174

135

110

98

94

92

90

90

110

155

150

143

143

177 

216

326

341 304"

271

242

224

231

231

224

209

198

191

*188

180

161

158

5,656

182

2.19

2.53

Apr.

149

174

231

212

205

374

393

362

374

346

348

344

341

308 

270

230

210

200

180

150

125

120

115

100

80

80

75

70

70

6£

6,296

210

2.53

2.82

May

*46

50

47

42

40

44

40

35

fa

37

77

167

194

164 

152

198

161

127

107

148

235" 264

198

164

140

137

167

220

191

152

122

3,904

126

1.52

1.75

June

77

70

79

77

*67

59

63

65

54

51

43

34

29

22 

20

20

25

33

36

45

40

36

28

30

35

40

47

59

47

40

1,371

45.7

0.551

0.61

Mean 164 Cfsm 1.98

July

36

30

23

23

20

17

16

17

21

20

18

17

14

12 

12

*14

13

12

14

12

10

ill

12

12

12

11

9.7

9.7

9.7

11

12

479.8

15.5

0.187

0.21

Aug.

~9~. 13_ 7

9.7

10

9.7

*8.7

8.7

8.7

8.7

8.7

8.7

9.2

8.7

8.7 

8.7

9.2

9:2

9.2

11

9.7

7.8

7.8

7.4

7.4

7.4

7.0

6^6

7.4

7.4

7.8

6.6

266.5

8.60

0.104

0.12

Sept.

5,1

5.9

7.0

*7.2

8.2

8.7

9.2

11

12

9.7

26

40

34

57 

51

49

50

49

61

91

73

51

44

42

34

30

31

29

25

22

973.8

32.5

0.392

0.44

In. 26.90

Water year 1956-57 : Max 650 Mln 5.9 Mean 92.6 Cfsm 1.12 In. 15.12

Peak discharge (base, 690 cfs). Jan. 23 (4 p.m.) 792 cfs (7.04 ft).

* Discharge measurement made on this day.

Note. No gage-height record Apr. 15 to May 1, June 18-26; discharge estimated on basis of 1 discharge measurement, weather records, recorded range in stage when available, ard records for Priest 

Brook near Wlnchendon and Ware River near Barre. Stage-discharge relation affected by Ice Dec. 19, 

26, 27, Dec. 30 to Jan. 23, Jan. 30 to Feb. 6, Feb. 9, 11-26, Mar. 4-9, 11.
CONNECTICUT RIVER BASIN 189

Priest Brook near Winchendon, Mass.

Location. Lat 42°40'57", long 72"06'56", on right bank 100 ft downstream from highway 

bridge, 3 miles upstream from mouth, and 3j miles west of Winchendon, Worcester County.

Drainage area. 19.4 sq mi.

Records available. May 1916 to September 1957. October 1917 to July 1918 monthly discharge only, published in WSP 1301.

Sage. 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. 41 years, 33.3 cfs.

Extremes. Maximum discharge during year, 207 cfs Jan. 24 (gage height, 4.19 ft); minimum, 

0.3 cfs Aug. 25.

1916-57: Maximum discharge, 3,000 cfs Sept. 21, 1938 (gage height, 9.90 ft), from 

rating curve extended above 330 cfs on basis of contracted-opening determinations at 

gage heights 8.4 and 9.90 ft; minimum, 0.08 cfs several times in September 1929.

Remarks. Records good except those for periods of ice effect, which are fair. Flow regulated by ponds and mill above station.

Revisions (water years). WSF 451: 1916. WSP 871: Drainage area. WSP 1051: 1919, 

1922-24. WSP 1301: 1917(M) , 1919-24(M) , 1926-27(M) , 1929(M) , 1931-35(M) .

Rating table, water year 1956-57, except periods of ice effect (gage 

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

2.1

2.2

2.3

2.4

2.5

0.3 

1.1 

2.4 

4.4 

7.0

2.7 

3.0 

3.5 

4.0

15

34

86

159

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

8.4

5.1

3.7

3.1

4.8

4.8

5.9

9.4

10 "8.0

4.6

3.7

3.9

4.6

4.4

3.9

3.3

3.3

3.1

2.9

2.9

2.9

3.3

3.7

2.8

*2.4

2.4

2.3

2.1

2^0

2.0

129.7

4.18

0.215

0.25

Nov.

2.4

3.8

9.8

10

9.1

8.4

7.4

6.7

5.3

5.1

5.6

6.1

11

25

16

6.7

6.1

6.4

6.4

6.1

7.9

46

64

BT

38

34

33

28

18

16

500.3

16.7

0.861

0.96

Dec.

16

15

15

*15

14

13

14

16

20

20

20

54

74

79

65

76

78

67

56

45

40

35

34

37

52

49

44

41

37

33

31

1,205

38.9

2.01

2.31

Jan.

29

27

26

24

23

21

20

19

19

19

18

17

16

15

*14

14

14

if

13

13

15

82

148

106

94

73

53

50

39

30

1,077

34.7

1.79

2.06

Feb.

28

29

28

28

27

24

23

22

20

19

18

18

*18

18

16

15

16

15

15

14

13

12

12

13

14

24

59

73

-

631

22.5

1.16

1.21

Mar.

64

53

45

37

30

26

23

57

26

33

28

26

29

38

50

76

110

108

82

65

57

60

59

59

59

58

48

*47

45

47

42

1,553

50.1

2.58

2.98

Apr.

43

58

75

75

71

124

106

100

91

78

73

67

67

62

57

45

40

41

39

37

31

31

32

26

20

22

22

21

22

17.

1,593

53.1

2.74

3.05

May

*15

15

13

14

12

15

19

10

8.8

24

54

53

42

46

63

49

38

30

37

64

50

45

33

23

24

33

40

33

26

24

961.9

31.0

1.60

1.84

June

19

14

19

18

*15

12

15

14

10

9.4

8.8

12

19

16

8.7

5.1

5.4

5.2

6.9

15

7.5

4.6

3.5

2.8

2.4

5.7

*24

25

2T

5 " 9

349.9

11.7

0.603

0.67

July

9.6

14

13

7.4

6.3

7.1

2.8

2.9

4.7

9.9

2.4

1.8

1.5

1.4

1.3

1.1

1.0

.9

.8

.8

.7

.7

.8

.7

.7

.7

.6

.7

.7

.7

.6

98.3

3.17

0.163

0.19

Av«.

0.6

.5

.4

.5

-tl

*.6

.5

.4

.4

.4

.5

.6

.6

.4

.5

.5

.5

.4

.4

.4

.4

.5

.5

.4

.4

.6

.6

.4

.4

.4

.4

14.8

0.477

0.025

0.03

Sept.

0.4

.4

.7

*.7

.8

.7

.7

.6

.6

.5

.6

.6

.6

1.0

.7

.8

1*2.

1.0

.9

.7

.7

.7

.7

.7

.6

.6

.5

.5

.5

.5

20.2

0.673

0.035

0.04

Calendar year 1956: Max 526 Mln 0.8 Mean 35.5 Cfsm 1.83 In. 24.94

Water year 1956-57: Max 148 Mln 0.4 Mean 22.3 Cfsm 1.15 In. 15.59

Peak discharge (base, 150 cfs).--Jan. 24 (12 m.) 207 cfs (4.19 ft); Apr. 6 (6 p.m.) 166 ofs (3.95ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 25, Dec. 10, 16-19, 22, 26, 27, 31, Jan. 3-28, 

Jan. 30 to Feb. 1, Feb. 10-12, Feb. 27 to Mar. 7, Mar. 10, 11, 13, 14, 17-19, 21. Discharge in 

cubic feet per second per square mile and runoff in inches may not represent natural flo--> because of 

regulation.
190 CONNECTICUT RIVER BASIN

Millers River at South Royalston, Mass.

Location. Lat 42°37'47", 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 1.7 miles 

downstream from Birch Hill Dam.

Drainage area. 187 sq ml.

Records available. July 1939 to September 1957.

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. 18 years, 316 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 1,410 cfs Jan. 25 (gage height, 6.64 ft); maxi- 

 mum gage height, 8.29 ft Jan. 24 (Ice Jam); minimum daily discharge, 22 cfs Aug. 24.

1939-57: Maximum discharge, 4,400 cfs Apr. 13, 1940 (gage height, 8.40 ft); minimum daily, 9.3 cfs Aug. 4, 1956.

Maximum stage known, 15.9 ft Sept. 21 or 22, 1938, from floodmarks.

Remarks. Records good except those for periods of Ice effect, which are fair. Plow 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. 233}.

Rating table, water year 1956-57, except periods of ice effect (gage 

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

3.5 

3.8 

4.1 

4.5

76

149

5.0 

5.5 

6.0 

6.5

335

570

880

1,280

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

161

149

139

132

149

142

164

199

188

175

182

172

158

137

*125

103

92

84

76

73

70

67

71

82

79

73

70

67

64

63

62

3,568

115

-0.41

Nov.

66

91

142

142

117

101

89

86

98

101

103

87

96

104

96

89

S2

84

89

84

93

348

470

412

290

*243

254

243

206

172

4,678

156

+0.42

Dec.

140

132

121

213

127

121

127

142

158

169

175

345

520

586

505

525

565

540

420

400

376

326

304

322

380

402

350

320

280

250

240

9,491

306

+0.60

Jan.

230

215

210

210

210

200

195

190

185

180

175

170

160

155

150

145

145

140

140

135

130

150

200

800

1,090

1.250

1,150

1,100

1,200

1,000

690

12,300

397

+2.28

Feb.

540

465

430

402

 375

285

250

228

215

230

235

225

210

180

165

150

145

150

149

135

130

130

130

139

210

443

545

7,018

251

-1.03

Mar.

530

438

344

270

266

254

243

243

294

366

326

*344

312

394

490

637

733

727

673

576

505

505

505

495

470

452

425

412

402

389

* 371

13,391

432

-0.90

Apr.

353

394

520

535

515

685

845

852

824

771

733

715

703

667

614

*535

434

380

358

335

322

286

262

243

213

202

199

192

178

172

14,037

468

-0.93

May

164

132

123

119

117

116

121

106

101

10T

233

448

530

480

438

480

443

358

286

304

535

560

485

407

326

286

*335

430

416

335

266

9,581

309

 V-0.34

June

192

152

172

169

144

127

125

130

114

98

92

80

82

76

68

60

65

177

153

101

80

68

64

85

172

169

149

112

3,393

113

-0.62

July

89

83

73

71

68

68

61

*58

56

60

58

51

48

45

42

40

40

39

39

39

39

37

38

37

36

34

32

31

3T

32

*34

1,509

48.7

-0.26

Aug.

35

34

31

29

31

29

27

26

25

25

26

26

26

25

25

25

25

25

24

25

24

24

23

22

23

26

26

29

26

25

25

817

26.4

-0.04

Sept.

24

23

24

25

33

34

32

35

39

38

37

68

58

72

80

73

77

77

73

100

110

82

68

67

60

55

55

54

50

46

1,669

55.6

+0.04

Adjusted for change in contents in Birch Hill Reservoir

Mean 

Cfsm 

In.

115 

0.615 

0.71

156 

0.834 

0.93

Calendar year 1956 : 

Water year 1956-57 :

307 

1.64 

1.89

399 

2.13

2.46

250 

1.34 

1.39

431 

2.30 

2.66

467 

2.50 

2.79

309 

1.65 

1.91

Observed

Max 2,020 Mln 9.3 Mean 353 

Max 1,250 Min 22 Mean 223

112 

0.599 

0.67

48.4 

0.259 

0.30

26.3 

0.141 

0.16

Adjusted

55.7 

0.298 

0.33

Mean 353 Cfsm 1.89 In. 25.66 

Mean 223 Cfsm 1.19 In. 16.20

* 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 Dec. 1, 19, 20, Dec. 27 to Jan. 24, Jan. 26 to 

Feb. 3, Feb. 5-7, 9-18, 20, 21.
CONNECTICUT RIVER BASIN 191

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 3i miles north of Athol, Worcester 

County.

Drainage area. 50.4 sq mi.

Records available. October 1915 to September 1957. October 1915 to May 1916 monthly discnarge only, published in WSP 1301.

Gage.--Water-stage recorder and concrete control. Datum of gage is 613.71 ft rbove mean 

sea level, datum of 1929 (Corps of Engineers bench mark). Prior to Oct. 26, 1948, staff 

gage at site 0.2 mile upstream at datum 14.40 ft higher.

Average discharge. 42 years, 84.0 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 276 cfs Mar. 19 (gage height, 4.14 ft); minimum, 

0.1 cfs Nov. 23, 24; minimum daily, 0.1 cfa Nov. 23.

1915-57: 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 above 1,500 cfs on 

basis of determination of peak flow by computation of flow over dam and 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. Plow regulated by Tully Reservoir since 1948 (see p. 233).

Revisions (water years). WSP 451: 1916. 

 TS2IT WSP 1301: T9T7-35(M) , 1937(M).

WSP 891: Drainage area. WSP 1051: 1916(M),

Rating tables, water year 1956-57 (gage height, In feet, and discharge, 

In cubic feet per second)

Oct. 1 to Mar. 19 Mar. 20 to Sept. 3O

2.3

2.4 

£.5

2.6

2.7

0.1

.9

H.8

6.5

12

2.9 

3.2 

3.6 

4.0 

4.5

147 

£59 

450

2.36

2.4 

£.45

2.5

2.55

£.6

0.6 

1.1 

1.9 

2.9 

4.2 

6.2

2.7 

2.9 

3.1 

3.5 

4.0 

4.5

12

28

50

118

238

400

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

9.2

8.0

8.0

8.5

19

19

21

27

g^

19

15

13

12

11

10

10

9.8

9.8

*8.6

8.0

7.5

7.0

7.5

8.6

8.0

7.5

7.0

7.0

7.0

6.5

6.5

350.0

11.3 

O

Nov.

7.0

10

23

24

19

15

13

12

14

14

12

12

15

16

15

14

14

18

20

7.3

.£

.3

.1

34

21

69

*68

68

46

31

687.9

£2.9 

+8.06

Dec.

34

33

33

33

32.

32

32

3£

32

34

36

36

50

111

177

172

172

170

118

90

86

59

42

44

44

80

97

93

9£

92

88

2,276

73.4

0

Jan.

80

53

25

25

£5

25

*25

25

80

110

78

40

27

£7

37

40

29

£9

29

£9

29

33

68

82

54

128

130

154

^.88

180

2,083

67.2 

+1.87

Feb.

180

156

68

45

*30

41

46

46

46

46

58

65

60

38

38

38

38

38

38

36

34

28

26

36

41

42

90

140

-

1,538

54.9 

0

Mar.

183

183

177

120

90

61

i2

47

48

50

70

79

 77

77

79

124

198

231

264

£60

167

131

131

133

133

135

133

133

156

185

171

4,073

131 

-6.68

Apr.

152

12 S

148

159

161

178

216

214

219 2~19~

195

178

171

166

146

*1£0

108

100

93

87

85

78

74

69

61

57

56

51

49

48

3,786

126 

-3.05

May

43

39

36

34

33

32

30

£8

25

25

58

126

161

135

118

137

131

104

82

82

135

139

*112

89

7£

64

74

102

110

84

64

2,504

80.8 

+0.04

June

51

48

63

58

45

38

39

44

35

28

25

22

20

17

17

15

12

10

IT

31

27

19

15

12

11

24

67

63

43

35

945

31.5 

-0.04

July

27

20

16

17

22

22

19

*14

11

9.7

7.8

6.2

5.4

5.0

4.6

4.0

3.4

3.2

2.7

2.3

2.1

1.9

2.3

2.5

2.1

1.9

1.7

1.7

2.3

2.7

2.7

£46.2

7.94 

-0.07

A«5.

*2A3

1.7

1.4

1.2

1.6

1.7

1.7

1.6

1.2

1.2

1.1

1.1

1.1

1.0

1.0

1.0

1.0

1.0

.8

.7

.7

.7

.7

tf

1.0

1.0

.8

.8

.7

.7

33.8

1.09 

0

Sept.

0.6

.6

.7

1.0

1.2

1.2

1.2

1.1

1.0

1.0

.8

.8

*.9

1.6

1.7

1.7

2.5

g, 9

2.5

2.1

1.9

1.7

1.6

1.6

1.4

1.2

1.1

1.0

.8

.8

40.2

1.34 

O

Adjusted for change In contents In Tully Reservoir

Mean 

Cfsm 

In.

11.3 

0.224 

O.26

31.C 

0.615 

0.6S

Calendar year 1956: 

Water year 1956-57:

73.4 

1.46 

1.68

69.1 

1.37 

1.58

54.9 

1.O9 

1.13

1£5 

2.48 

2.85

123 

2.44 

2.73

8.08 

1.60 

1.85

Observed

Max 540 Mln 0.06 Mean 74. O 

Max 264 Mln o.l Mean 50.9

31.5 

0.625 

0.70

7.88 

0.156 

0.18

1.09 

O.022 

0.02

1.34 

0.027 

0.03

Adjusted

Mean 74.1 Cfan 1.47 In. 20.02 

Mean 50.9 Ofan l.ol In. 13.70

* Discharge measurement made on this day.

t Change In contents, equivalent In cubic feet per second, In Tully Reservoir.
192 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. 12.3 sq ml.

Records available.--June 1909 to August 1910, June 1916 to September 1957. 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 downstream at different datum.

Average discharge. 41 years (1916-57), 21.0 cfs.

Extremes.--Maximum discharge during year not determined; maximum gage 1 eight, 3.19 ft 

Jan. 25, from graph based on gage readings (backwater from ice); minimum discharge, 

0.4 cfs Aug. 18, 19.

1916-57: 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). WSP 891: Drainage area. WSP 1051: 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 1956-57, except periods of ice effect (gage 

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

0.9

1.0

1.1

1.2

1.3

1.4

0.4 

1.0 

1.7 

2.4, 

3.6 

5.1

1.5

1.6 

1.8 

2.1 

2.5 

2.8

18

36

72

109

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

3.1

2.6

2.4

2.6

4.6

3.8

5.3

6.0

8.0

5.6

4.2

3.4

3.1

2.8

2.8

*2.6

2.6

2.4

2.2

2.0

2.0

2.0

1.9

2.4

2.2

2.1

2.1

2.1

2.0

2.0 

2.0

94.9

3.06

0.249

0.29

Nov.

2.8

4.8

7.3

5.3

4.2

3.6

3.2

3.0

3.3

3.0

2.8

2.8

3.3

3.1

2.8

2*6

2.8

3.6

3.6

3.5

4.8

40

13

10

8.3

*8.8

8.6

6.6

5.8

203.3

6.78

0.551

0.61

Dec.

5.8

5.6

5.6

5.0

4.8

4.6.

5.1

5.1

5.6

6.8

5.8

20

28

25

25

24

29

28

23

18

17

15

14

17

20

22

19

17

16

14 

13

463.8

15.0

1.22

1.40

Jan.

12

11

10

9.0

8.5

8.0

7.6

7.0

7.0

7.0

6.6

6.3

6.0

5.5

5.0

5.0

5.0

4.9

4.7

4.7

4.7

5.0

55

100

90

60

25

13

11

10 

9.0

523.5

16.9

1.37

1.58

Feb.

8.4

9.0

10

10

10

10

*9.6

10

10

10

11

10

9.0

8.5

7.5

7.5

7.5

7.7

7.4

7.0

6.6

6.3

6.3

6.6

8.3

14

38

49.

315.2

11.3

0.919

0.95

Mar.

33

28

24

21

18

16

14

14

17

20

17

15

16

25

34

*60

74

48

38

31

30

31

32

31

27

25

24

22

22

21 

19

847

27.3

2.22

2.56

Apr.

17

22

35

25

30

73

47

42

38

38

31

38

32

28

25

22

20

19

18

15

14

*13

12

11

11

11

10

9.0

8.8

791.8

26.4

2.15

2.39

May

8.0

6.8

6.0

6.0

5.8

5.8

5.3

4.5

4.5

4.0

19

46

40

26

25

35

26

19

14

24

44

39

*24

18

13

16

18

27

25

16 

14

584.7

18.9

1.54

1.77

June

11

11

15

11

8.6

6.8

9.3

8.6

6.0

5.0

4.2

3.9

3.4

3.0

2.8

2.6

2.3

2.1

2.0

6.3

4.0

2.8

2.3

2.1

2.2

6.6

15

*9.0

6.0

4.8

179.7

5.99

0.487

0.54

July

ftf

2.3

3.6

3.9

4.2

2.8

2.1

1.8

1.8

1.6

1.4

1.2

1.5

1.2

1.1

1.0

.9

.9

.8

.8

itT

1.0

.9

.7

.7

.9

1.1

1.4 

1.4

51.8

1.67

0.136

0.16

Aug.

1.0

*.8

.6

1.5

2.0

1.2

1.0

.8

.7

.7

.8

1.0

.8

.6

.6

.6

.5

.4

.4

.5

.5

1.0

.7

.5

.5

l.E

1.0

.7

.5

.6 

.6

24.3

0.78

0.063

0.07

Sept.

0.5

.5

1.1

1.1

1.7

1.2

.9

1.0

.8

*.6

.7

.8

.7

1.2

1.0

1.0

2.6

1.6

1.2

.9

.9

.9

.9

.9

.7

.7

.6

.6

.6

.6

28.5

0.95

0.077

O.O9

Calendar year 1956: Max 217 Mln 1.0 Mean 17.2 Cfsm 1.4O IT. 19.02

Water year 1956-57! Max 100 Mln o.4 Mean 11.3 Cfsm 0.919 IT. 12.41

Peak discharge (base, 16O cfs). No peak above base.

* Discharge measurement made on this day.

Note.. Stage-discharge relation affected by ice Nov. 20, Dec. 1, 2, 5, 6, 12, 19, 22, Dec. 24 to 

Feb. 5, Feb. 9-21, Mar. 2-11.
CONNECTICUT RIVER BASIN

Millers River at Erving, Mass.

Location. Lat 42°35 I 51", long 72°26'19", on right bank 75 ft downstream from b"ldge at 

Parley, 0.6 mile upstream from Mormon Hollow Brook, 2.4 miles downstream fron Erving, 

Franklin County, and 5.5 miles upstream from mouth.

Drainage area. 375 sq mi.

Records available. August 1914 to September 1957.

Gage. Water-stage recorder. Altitude of gage Is 380 ft (from topographic map). Prior 

Co 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 diferent 

datum. Jan. 1 to Mar. 29, 1939, staff gage and Mar. 30, 1939, to Sept. 12, 1941, 

water-stage recorder, at site 0.4 mile downstream at different datum.

Average discharge. 43 years, 631 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 1,990 cfs Apr. 6 (gage height, 4.92 f'-,); maximum gage height, 5.77 ft Jan. 23 (ice jam); minimum dally discharge, 20 cfs Aug. 25, 

Sept. 2.

1914-57: 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 determination; 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 period of ice effect, which are fair. Plow 

regulated by powerplants, Lake Monomonac and other reservoirs, and high flow by Birch 

Hill and Tully Reservoirs (see p. 233).

Revisions (water years). WSP 641: 1920(M). WSP 756: Drainage area. WSP781: 1928(M), 

1933(M).WSP 1301: 1915(K).

Rating tables, water year 1956-57, except period of ice effect (gage 

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

Oct. 1 to Jan. 23 Jan. 24 to Sept. 30

1.9 

2.2 

2.5 

3.0

72

126

199

396

3.5 

4.0 

4.5

705

1,040

1,420

1.3 

1.6 

2.0 

2.5

103

221

3.0 430

4.0 1,120

5.0 2,080

Discharge, In cubic feet per second, water year October 1956 to September 195T

Day

1

2

3

4

5

6

7

8

9 

10

11

12

13

14

15

16

17 

18

19

20

El

22

23

24

25

26

27

28

29

30

31

Total

ftf

Oct.

232

214

196

199

229

214

226

391

488 

291

217

218

196

180

178

193

144 

137

125

101

107

120

109

121

128

127

84

106

123

103

86

5,583

180

-0.41

Nov.

108

141

205

217

199

171

162

152

143 

141

144

167

142

161

150

144

115 

148

168

145

169

623

712

562

450

434

434

428

396

*321

7,652

255

+8.49

Dec.

263

256

253

246

246

246

246

256

295 

303

307.

585

874

984

963

1,030

1.120 

1,030

848

776

692

608

536

575

705

744

670

600

540

480

460

17,737

572

+0.60

Jan.

440

400

350

350

335

*325

320

325

350 

40O

360

310

280

270

270

265

260 

255

250

250

245

270

1,150

1.800

1,300

1,400

1,450

1,550

1,700

1,450

1,150

19,830

640

+4.14

Feb.

950

800

720

660

600

540

5OO

470

450 

450

500

470

440

380

340

335

320 

320

315

300

280

270

260

265

280

400

900

1.150

-

13,665

488

-1.03

Mar.

1,100

970

810

690

610

560

520

500

600 

7O8

652

701

666

785

968

*1,390

1.540 

1,490

1,350

1,280

1,130

1,070

1,050

946

890

890

911

883

855

862

785

28,162

908

-7.58

Apr.

778

862

1,050

1,060

1,080

1,630

1.750

1,630

1,590 

1,500

1,510

1,460

1,410

1,260

1,110

1,060

932 

334

771

722

624

624

*617

568

496

460

460

388

372

359

28,967

966

-3.97

May

331

315

279

257

253

253

250

237

221 

234

424

911

1,060

932

869

911

911 

785

638

715

1.120

1,120

976

827

*659

532

624

834

799

645

520

19,442

627

+0.37

June

419

354

388

377

331

290

275

283

264

240

213

199

180

170

154

145

139 

131

141

272

287

218

180

168

152

231

442

442

382

310

7,777

259

-0.66

July

253

207

188

180

183

190

166

145

141 

134

132

123

97

101

91

61

97 

81

78

54

40

79

83

75

69

71

47

65

90

78

79

3,478

112

-0.34

Au?,.

69

70

36

58

87

66

63

64

*62 

39

44

65

62

66

60

62

31 

26

51

59

64

68

65

29

20

60

64

64

66

65

30

1,735

56.0

-0.04

Sept.

23

20

58

65

64

59

30

22

60 

73

68

73

*103

110

91

131

140 

113

102

108

138

125

120

98

85

78

77

42

70

102

2,448

81.6

+0.04

Adjusted for change in reservoir contents

Mean 

Cfsra 

In.

180 

0.480 

0.55

264 

0.704 

0.78

Calendar year 1956: 

Water year 1956-57:

573 

1.53 

1.76

644 

1.72 

1.98

487 

1.30 

1.35

901 

2.40 

2.77

962 

2.57 

2.86

628 

1.67 

1.93

Observed

Max 4,430 Mln 31 Mean 634 

Max 1,800 Mln 20 Mean 429

259 

0.691 

0.77

112 

0.299 

0.34

55.9 

0.149 

0.17

81.6 

0.218 

0.24

Adjusted

Mean 634 Cfsra 1.69 In. 23.00 

Mean 429 Cfsra 1.14 In. 15.50

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Birch Hill and Tully Reservoirs.

Note. Stage-discharge relation affected by ice Dec. 27 to Mar. 9.
194 CONNECTICUT RIVER BASIN

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 ml.

Records available. January 1915 to September 1957.

Average discharge . 42 years, 11,880 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 powerplants and b;' First Connecticut 

and Second Connecticut Lakes, Lake Francis, Moore Reservoir, and Comerford Station 

Pond (see p. 233), and other reservoirs (combined usable capacity, about 24^ 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 1956 to September 1957

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.

6,280

5,930

5,860

6,500

6,920

3,870

4,860 

8,920

11,000

11.200

9,550

7,030

3,090

678

7,930

7,480

7,250

6,770

6,370

1,980

554

6,120

6,890

5,170

5,330

4,930

555

138

4,550

4,190

3,780

171,675

5,538

-692

Nov.

5,800

7,340

6,320

138

5,200

5,040

5,020 

5,620

5,970

1,920

138

2,120

5,730

5,660

9,680

6,120

4,740

3,030

7,050

7,400

6,790

13,600

17.800 

16,000

13,400

9,960

8,760

9,760

9,560

8,140

209,806

6,994

-88.3

Dec.

6,730

Z.300

7,310

6,150

6,440

7,750

8,590 

8,360

12,500

11,200

9,600

14.100

13,100

14,000

14,100

1O, 70O

11,500

14,000

13,200

10,200

10,900

10,400

8,840 

9,160

9,110

8,800

10,300

8,910

7,390

3,210

8,130

296,980

9,580

-74.0

Jan.

2.540

7,650

8,020

6,160

5,680

2,940

7,360 

7,440

7,100

6,320

6,350

3,190

2,770

6,860

5,710

4,900

5,440

6,360

3,810

2,650

7,250

6,520

14,000 

50.900

21,400

16,100

15,100

15,300

13,000

12,800

11,500

273,120

8,810

-470

Feb.

9,670

10,700

6,880

7,950

9,440

8,300

7,240 

7,880

8,900

5,420

8,360

7,540

7,870

7,180

7,300

7,880

2,940

7,960

6,940

7,220

6,860

6,620

6,020 

2.140

8,980

9,830

13,600

20.400

228,020

8,144

-1,254

Mar.

18,300

15,100

15,200

12,700

12,800

12,600

12,400 

11,000

11,800

7.650

9,520

11,300

9,040

10,600

13,500

19,600

24.400

17,500

19,000

17,200

16,200

15,600

15,200 

15,100

15,400

15,500

15,500

15,500

15,300

14,600

13 , 000

448,090

14,450

-1,256

Apr.

10.400

13,200

21,100

18,800

17,700

24,200

26 . 800 

21,200

19,900

18,100

18,200

18,500

16,700

15,700

15,900

15,500

14,700

14,800

14,600

16,100

19,400

21,900

25,600 

23,700

20,900

16,800

14,800

14,600

14,500

13,900

538,200

17,940

+1,980

May

12,500

9,170

11,000

9,730

2.660

8,690

8,920 

7,640

J,310

8,280

4,780

5,430

7,660

9,240

9,460

12,500

14,900

14,100

6,820

9,660

22 . 700

21,000

16,400 

15,400

14,800

7,220

9,660

11,800

12,000

7,790

9,510

329,730

10,640

+1,164

June

6,580

6,130

9,300

8,380

7,210

8,000

8,360 

5,520

456

7,770

6,660

6,820

5,170

5,250

2,570

138

4,720

3,660

3,180

2,860

3,540

138

138 

3,790

3,550

5,870

11.700

10,400

7,720

7,310

162,890

5,430

+224

July

7,810

5,040

5,180

6,340

7,790

12,000

12.100 

11,500

9,400

6,640

6,560

6,460

3,090

1,470

5,030

4,540

3,490

3,300

3,720

2,990

705

5,540

8,240 

8,950

6,310

7,790

2,100

543

3,700

5,990

6,660

180,978

5,838

+351

Aug.

6.540

5,580

190

532

4,860

4,330

3,590 

3,720

4,720

1,220

454

4,590

4,550

4,260

4,800

5,320

217

340

4,400

3,700

3,880

2,770

2,900 

138

330

3,110

3,310

2,050

1,800

2,520

182

90,903

2,932

-362

Sept.

384

138

4,010"

3,660

2,750

2,360

172 

362

994

2,850

3,010

3,100

2,560

138

138

2,780

2,560

2,740

2,900

2,550

138

145

7.450 

6,480

6,460

5,430

2,630

138

145

2,720

71,892

2,396

-219

Adjusted for change in reservoir contents

He an 

Cfsm 

In.

4,846 

0.677 

0.78

6.90E 

0.964 

l.OE

Calendar year 1956: 

Water year 1956-57:

9,506

1.33 

1.53

8,340

1.16 

1.34

6,890 

0.962 

1.00

Observed

13,200 

1.84 

2.12

19,920 

2.78

3.10

11,800 

1.65 

1.90

Max 79,200 Mln 138 Mean 11,590 

Max 30,900 Mln 138 Mean 8,225

5,654 

0.789 

0.88

6,189 

0.864 

1.00

Ad Justed

2,570 

0.359

0.41

2,177 

0.304

0.34

Mean 11,810 Cfsm 1.65 In. 22.45 

Mean 8,171 Cfsm 1.14 In. 15.48

t Change in contents, equivalent in cubic feet per second, in First Connecticut and Second Connecticut Lakes, Lake Francis, Moore Reservoir, Comerford Station Pond, Union village Reservoir, 4 reservoirs in Mascoma River basin, Sunapee Lake, and Surry Mountain, Birch Hill, and fully Reservoirs.
CONNECTICUT RIVER BASIN 195

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 Chickley River.

Drainage area. 362 sq mi.

Records available. June 1913 to September 1957.

Gage. Water-stage recorder. Datum of gage is 517.36 ft above mean sea level, ditum of ~~~1929.

Average discharge. 44 years, 898 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 5,430 cfs Jan. 23 (gage height, 6.12 ft); minimum daily, 29 cfs Sept. 29.

1913-57: Maximum discharge, 56,300 cfs Sept. 21, 1938 (gage height, 20.17 ft, from 

floodmarks), 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. Plow regulated by Somerset Reservoir, since 1924 by Harriman 

Reservoir (see p. 233), and by several powerplants above station.

Revisions (water years). WSP 781: 1915(M). WSP 1301: 1918(M).

Rating tables, water year 1956-57, except periods of Ice effect (gage 

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

Oct. 1 to Jan. 23 Jan. 24 to Sept. 3O

1.5 

1.7 

2.0 

2.5

129

235

500

3.0 

4.0 

6.0

910

1,980

5,210

1.3 

1.5 

1.7 

2.0

29

70

125

235

2.5 500

3.0 910

4.0 1,980

4.5 2,650

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

636

576

456

618

614

404 

354

854

415

394

496

305

276

77

500

586

666

*599

637

388

148

519

698

733 

781

748

395

84

456

629

642

15,684

506

-304

Nov.

708

826

974

324

636

650 

747

729

734

380

268

478

722

784

662

632

351

334

702

700

848

2.000

854

718 

403

1,000

942

929

*820

761

21,616

721

+59.8

Dec.

215

207

866

986

918

960 

992

940

766

868

1,090

1^590

1,380

1,340

764

660

1,230

1,210

1,120

1,080

1,050

1,080

678

760 

520

836

1,090

1,180

1,170

750

720

28,816

930

+71.4

Jan.

570

850

1,000

1,100

*1,09O

500 

900

1,060

1,050

1,060

1,050

850

340

650

920

980

920

950

750

630

630

800

5,800

1,590 

1,040

622

400

500

850

840

830

29,122

939

-132

Feb.

808

800

775

808

791

*774 

774

766

755

8OO

760

860

1,300

1,300

1,240

1,070

1,060

1,060

1,060

1,050

1,050

1,050

1,040

541 

739

1,180

2.250

1,550

-

27,991

1,000

-426

Mar.

1,160

1,240

1,190

1,150

1,130

1,130 

1,130

1,130

1,O60

964

1,100

1,110

1,140

1,260

*1,340

1.580

1,170

1,220

1,200

1,250

1,240

1,260

1,270

1,090 

1,260

1,240

1,230

1,230

1,230

1,230

1,190

36,924

1,191

-353

Apr.

1,190

1,660

1,320

768

958

1.710 

1,380

986

806

786

650

659

748

429

537

522

*570

560

598

450

464

413

548

510 

464

405

220

165

258

221

20 , 955

698

+ 788

May

202

194

197

132

163

216 

217

195

188

238

470

582

470

467

501

573

645

289

195

1,230

1.740

1,040

559

*463 

273

336

648

752

382

£21

£27

14,005

452

+429

June

228

198

266

238

208

200 

259

162

125

242

200

317

204

211

197

188

294

316

562

542

254

83

83

194 

126

116

140

99

91

88

6,431

214

+109

July

86

66

59

113

116

113 

110

210

149

99

*140

168

140

96

390

390

366

390

395

64

74

262

82

70 

301

290

128

136

560

747

409

6,719

217

+58.9

Auf.

31O

246

64

63

216

174 

*374

528

556

350

57

442

396

138

386

362

64

38

48T

697

688

598

745

186 

92

442

272

515

509

494

118

10,601

342

-305

Sept.

137

217

508

604

786

503 

365

146

492

580

*480

500

634

338

98

474

529

544

554

539

316

48

444

453 

151

129

129

42

29

272

11,041

368

-254

Adjusted for change In reservoir contents

Mean

Cfsm

In.

202

0.558

0.64

780

2. IE

2.40

Calendar year 1956:

Water year 1956-57:

1,001

2.77

3.19

807

2.23

2.57

574

1.59

1.65

838

2.31

2.67

1,487

4.11

4.58

881

2.43

2.80

Observed

Max 6,450 Mln 40 Mean 866

Max 3,800 Mln 29 Mean 630

323

0.892

 1.00

276

0.762

0.88

37.0

0.102

0.12

Adjusted

114

0.315

0.35

Mean 884 Cfsm 2.44 In. 33.21

Mean 609 Cfsm 1.68 In. 22.85

* Discharge measurement made on this day.

t Change In contents, equivalent In cubic feet per second, In Somerset and Harriman Reservoirs. 

Note. Stage-discharge relation affected by Ice Dec. 30 to Jan. 4, Jan. 6, 7, 11-21, 23, 27-31, 

eb. 3, 9, 11-14, 20, 21, Mar. 5, 11.
196 CONNECTICUT RIVER BASIN

North River at Shattuckville, Mass.

Location. Lat 42°38'18", long 72°43'32", on right bank in Shattuckville, Franklin County, 

It miles south of Griswoldville and 1.3 miles upstream from mouth.

Drainage area. 88.4 sq mi.

Records available.--October 1939 to September 1957. 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 

1929.

Average discharge.--18 years, 180 cfs.

Extremes.--Maximum discharge during year, 2,380 cfs Jan. 23 (gage heiglt, 6.00 ft); maximum gage height, 6.42 ft Jan. 23 (ice jam); minimum discharge, 6.6 cfs Sept. 28; minimum daily, 8.9 cfs Sept. 7.

1939-57: Maximum discharge, 13,200 cfs Oct. 15, 1955 (gage heiglt, 10.37 ft), from 

rating curve extended above 5,700 cfs by logarithmic plotting; minimum daily, 5.1 cfs

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 regulation 

by mill.

Revisions (water years). WSP 1111: 1945(M).

Rating table, water year 1956-57, except periods of Ice effect 

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

1.7 

1.9

2.1 

2.5

51

103

3.0 

3.5 

4.0

5.0

207

360

580

1,250

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

27

25

30

32

55

38

137

97

58

44

38

34

32

32

31

29

27

*26

23

23

23

23

24

27

24

23

22

23

23

21

22

1,093

35.3

0.399

0.46

Nov.

42

535

266

133

92

73

63

67

84

66

50

59

82

68

60

56

66

69

61

57

86

545

214

120

98

106

103

91

*82

75

3,569

119

1.35

1.50

Dec.

68

64

73

75

72

73

130

245

173

135

105

306

362

264

197

263

278

212

150

175

157

164

164

194

245

180

140

159

151

100

100

5,174

167

1.89

2.18

Jan.

120

105

110

120

loo

*95

93

90

88

84

80

82

80

70

.70

71

72

68

66

66

64

To

1.100

480

261

215

190

160

150

140

130

4,690

151

1.71

1.97

Feb.

125

120

115

130

120

*100

105

100

92

148

140

90

100

96

88

82

82

80

77

74

74

70

69

72

80

189

1.000

^10

-

4,028

144

1.63

1.69

Mar.

273

215

160

140

135

135

131

129

136

125

116

120

147

268

*313

618

4T5

294

253

223

220

245

258

258

226

210

202

200

197

187

164

6,713

217

2.45

2.82

Apr.

153

357

315

218

336

818

553

346

314

290

304

339

328

261

223

204

*204

202

197

187

180

153

140

129

117

115

110

100

!2_

92

7,377

246

2.78

3.10

May

82

74

69

69

67

62

56

52

49

54

195

289

161

131

207

193

120

103

91

425

490

229

168

*136

108

129

392

202

136

105

88

4,732

153

1.73

1.99

June

77

82

96

72

63

55

92

74

56

48

43

40

38

32

36

32

29

28

32

40

32

28

24

23

21

~90 101

56

56

53

1,549

51.6

0.584

0.65

July

38

32

27

38

53

53

3S

31

26

24

*23

17

16

17

17

16

15

14

12

12

12

16

19

17

16

14

13

14

23

38

30

731

23.6

0.267

0.31

Aug.

23

19

16

15

14

12

12

12

11

11

11

12

*12

12

11

12

13

11

10

IT

11

17

18

15

12

18

2±

16

14

12

12

429

13.8

0.156

0.18

Sept.

10

9.8

13

14

11

11

8.9

11

17

13

*12

14

13

11

9.8

10

18

18

15

11

11

9.8

40

35

20

16

14

12

11

11

430.3

14.3

0.162

0.18

Calendar year 1956 : Max 2,160 Min lu Mean 166 Cfsm 1.88 In. 25.52

Water year 1956-57 : Max 1,100 Min 8.9 Mean ill Cfsm 1.26 In. 17. 03

Peak discharge (base, 1,880 cfs).--Jan. 23 (1 p.m.) 2,380 cfs (6.00 ft).

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Nov. 24, 25, Nov. 30 to Dec. 2, Dec. 10, 11, 

27, Dec. 31 to Jan. 23, Jan. 26 to Feb. 9, Feb. 11-13, 15-18, 20-22, 27, Mar. 3-6.

19,
CONNECTICUT RIVER BASIN 197

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, H miles west of West Deerfield, Franklin County, and 2-J miles west of Deerfield.

Drainage area. 558 sq ml.

Records available. March 1904 to December 1905 (gage heights only), October 1940 to September 1957. Published as "at Deerfield" 1904-5.

Gage. Water-stage recorder. Altitude of gage is 155 ft (from topographic map). Prior 

to Dec. 16, 1905, chain gage at site 1.5 miles downstream at different datuii.

Average discharge . 17 years (1940-57), 1,300 cfs (adjusted for storage).

Extremes.--Maximum discharge during year, 9,570 cfs Jan. 23 (gage height, 6.71 ft); maximum gage height, 7.49 ft Jan. 23 (ice jam); minimum dally discharge, 50 cfs Aug. 18.

1940-57: 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 Harrlman Reservoirs (see p. 233), and by several powerplants 

above station.

Rating table, water year 1956-57, except periods of Ice effect 

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

1.8 

2.1

155

310

2.5

3.0 

4.0 

5.0 

6.0

60S 

1,130 

2,670 

4,690 

7,370

Discharge, In cubic feet per second, water year October 1956 to September 1937

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.

612

822

585

526

705

607

613

1.080

585

372

669

335

486

141

477

539

760

710

617

681

196

437

*825

834

852

758

638

118

442

657

672

18,351

592

-304

Nov.

790

1,680

1,690

564

632

890

972

782

982

684

338

602

769

1,030

774

800

582

458

932

938

912

5.240

1,420

848

728

1,040

1,180

*1,180

1,080

901

29,418

981

+59.8

Dec.

494

317

994

1,150

1,130

1,130

1,130

1,550

1,140

1,110

1,350

1,900

2,100

1,980

1,350

1,190

1,760

1,750

1,460

1,420

1,490

1,500

1,200

1,200

1,320

984

1,480

1,650

1,570

1,000

1,050

40,849

1,318

+71.4

Jan.

950

1,150

1,400

1,450

1,400

800

1,300

1,400

1,400

1,500

1,300

1,150

650

850

1,100

1,200

1,300

1,200

1,100

850

900

1,050

5,900

2,830

1,640

1,200

800

650

1,050

1,100

1,000

41,570

1,341

-132

Feb.

1,100

1,100

1,100

1,100

1,100

950

1,050

*950

1,000

1,050

1,000

1,080

1,590

1,640

1,490

1,290

1,210

1,260

1,240

1,200

1,220

1,250

1,230

819

792

1,790

5.980

2,590

_

37,171

1,328

-426

Mar.

1,690

1,750

1,570

1,340

1,280

1,380

1,480

1,490

1,490

1,250

1,240

1,450

1,460

*1,870

2,260

2.720

2,100

1,900

1,720

1,550

1,740

1,840

1,870

1,750

1,600

1,870

1,620

1,680

1,660

1,680

1,630

51,910

1,675

-353

Apr.

1,540

2,340

2,270

1,240

1,640

5.140

2,760

1,710

1,410

1,460

1,260

1,360

1,490

1,050

1,050

982

995

*974

1,000

879

910

805

862

840

804

655

575

594 422"

40O

37,175

1,259

+788

May

451

367

417

544

506

555

545

345

294

352

992

1,540

560

750

1,050

818

924

604

466

1,670

2.810

1,460

918

*746

510

590

1,240

1,190

586

450

436

23,804

768

+429

June

560

584

512

397

596

287

412

389

202

382

278

379

319

149

299

187

556

496

675

700

444

152

104

226

253

592

225

240

147

156

9,876

529

+109

July

164

87

149

168

182

218

151

548

73

227

141

189

166

115

560

480

378

428

568

209

76

264

145

182

272

516

124

162

614

818

549

8,501

268

+58.9

Aug.

256

515

116

99

246

514

224

*486

662

408

81

408

452

552

271

302

126

50

475

745

726

602

891

209

158

480

714

548

654

607

264

12,021

588

-505

Sept.

134

192

588

530

749

582

451

160

487

626

482

*470

652

514

160

544

537

460

659

523

455

158

465

614

238

65

510

69

52

237

12,143

405

-254

Adjusted for change In reservoir contents

Mean 

Cfsm 

In.

288 

0.516 

0.59

1,040 

1.86 

2.08

Calendar year 1956: 

Water year 1956-57:

1,389 

2.49 

2.87

1,209 

2.17 

2.50

902 

1.62 

1.68

1,321 

2.37 

2.73

2,028 

3.63 

4.05

1,197 

2.15 

2.47

Observed

Max 10,400 Min 56 Mean 1,235 

Max 5,900 Mln 50 Mean 884

438 

0.785 

O.88

327 

0.586 

0.67

82.8 

0.148 

0.17

150 

0.269 

0.30

Adjusted

Mean 1,252 Cfsm 2.24 In. 30.54 

Mean 863 Cfsm 1.55 In. 20.99

* Discharge measurement made on this day.

t Change In contents, equivalent In cubic feet per second, In Somerset and Harrlman Reservoirs.

Note. Stage-discharge relation affected by Ice Dec. 31 to Jan. 23, Jan. 26 to Feb. 11.
198 CONNECTICUT RIVER BASIN 

Connecticut River at Montague City, Mass.

Location. Lat 42°34'48", long 72"34'30", on left bank 75 ft downstream from New York,

 Hew Haven and Hartford Railroad bridge at Montague City, Franklin County, and 1,000 ft

downstream from Deerfield River. 

Drainage area. 7,865 sq mi. 

Records available. March 1904 to September 1957. Prior to October 1939, 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 

~JT929. 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. 01 ft lower. Gages

at both sites in operation Oct. 1, 1929, to Sept. 30, 1932.

Average discharge. 53 years, 13,740 cfs (adjusted for storage since Ojtober 1923). 

Extremes. Maximum discharge during year, about 36,000 cfs Jan. 24; maximum gage height,

 23.76 ft Jan. 24 (backwater from ice); minimum daily discharge, 357 cfs Sept. 29.

1904-57: Maximum discharge, 236,000 cfs Mar. 19, 1936 (gage height, 49.2 ft, from 

floodmarksj, 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 gate-height record 

and those below 1,500 cfs, which are fair. Flow regulated by powerplants and by First 

Connecticut and Second Connecticut Lakes, Lake Francis, Moore Reservoir and Comerford 

Station Pond (see p. 233), and other reservoirs (combined usable capacity, about 

32-| billion cubic feet).

Revisions (water years). WSP 471: 1904-13 calendar years, 1914-17. WSP 741: 1930-32.

 WSP 761: 19261M). 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).

Rating table, water year 1956-57, except periods of Ice effect (gage 

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

3.9 

4.2 

4.5 

5.0 

6.0

345

525

735

1,170

2,260

7.0

9.0

13.0

18.0

3,620

7,110

17,800

35,700

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Hean

(t)

Oct.

6,620 

6,720

6,240

7,200

7,500

4,850

5,180 

10,100

11.800

11,700

10,100

7,130

3,630

1,160

7,860

8,080

8,080 

7,910

6,710

3,000

1,050 

*6,290

7,470

5,770

6,260

5,770

1,330

3668

4,650

4,470

4,500

189,798

6,123

-996

Nov.

6,230 

8,920

8,680

1,290

5,790

6,030

6,000 

6,420

6,640

2,940

750

2,650

5,980

6,550

6,360

6,830

5,210 

3,790

7,640

8,590

8,240 

16,500

20.800

19,800

16 , 100

10,600

10,200

*11,000

10,700

9,170

245,600

8,187

-28.6

Dec.

7,360 

2.990

8,210

7,340

7,810

8,990

9,960 

10,400

14,600

12,400

11,300

16,400

15,800

17.100

16,500

12,200

13,500 

16,800

15,300

12,100

12 , 600 

12,000

10,200

10,600

10,600

10,200

12,700

10,600

8,830

4,600

9,120

349,110

11,260

-2.65

Jan.

5.800 

8,800

9,300

7,600

7,100

4,100

8,700 

8,800

8,500

7,800

7,700

4,300

3,800

7,700

6,800

6,100

6,700 

7,500

4,9OO

3,900

8,100 

7,600

19,000

35.000

24,000

18,000

15,800

16,000

14,000

13,800

12 ' 500

317,700

10,250

-603

Feb.

10,700 

11,700

8,000

9,000

10,400

9,200

8,300 

8,900

9,800

6,500

9,300

8,700

9,300

8,700

8,800

9,100

4,500 

9,200

8,100

8,400

8,000 

7,900

7,200

5.300

9,550

10,000

17,400

25.500

263,450

9,409

-1,680

Mar.

21,000 

17,500

17,000

14,200

14,100

13,900

14,000 

13,000

13,700

9.120

10,500

13,100

11,300

 13,700

16,800

22,400

28.500 

21,400

22,100

20,000

19,400 

18,800

18,500

18,400

18,200

18,300

18,000

17,800

17,500

17,300

15,200

524,720

16,930

-1,610

Apr.

11.800 

15,700

23,800

21,700

20,400

28,400

31.200 

24,500

23,000

20,800

20,700

20,900

19,900

18,500

17,800

17,300

15,800 

*16,200

16,400

17,800

20,400 

23,000

26,700

25,000

22,300

18,500

16,600

15,700

15,400

14,600

600,800

20,030

+2,769

Hay

13,000 

10,200

11,800

9,830

3.290

8,550

9,360 

7,630

8,580

8,730

5,690

7,120

8,640

10,100

11,000

13,600

16,600 

15,400

7,500

10,900

24', 500

18,600

17,400

*16,500

8,170

10,800

13,700

13,400

8,120

9,730

364,940

11,770

+ 1,593

June

6,700 

6,430

9,710

8,590

7,450

8,130

8,710 

5,870

987

7,950

6,810

6,910

5,590

5,40O

3,000

659

5,000 

4,160

3,810

3,770

4,100 

637

a525

3,990

3,880

5,770

12 .500

11,000

8,150

7,260

173,448

5,782

+333

July

8,070 

5,490

5,480

6,250

8,080

12,500

T§tro§

9^840

6,610

6,740

*6,360

3,260

1,710

4,930

4,880

3,720 

3,680

4,190

3,080

a976 

5,330

8,440

9,030

6,470

7,790

2,580

a664

3,960

6,720

7,070

189,300

6,106

+410

Aug.

6.770 

5,730

a684

a678

4,990

4,480

3,600

4,110

5,120

1,950

a649

4,600

4,760

4,410

5,070

5,570

*600 

a497

4,490

4,390

4,440 

3,770

3,680

721

a495

3,240

4,100

2,370

2,330

2,910

688

101,892

3,287

-667

Sept.

581 

a429

4,480

4,090

3,440

3,030

796 

706

1,300

3,210

3,460

3,670

3,110

951

a483

3,020

3,090 

3,040

3,460

2,910

794 

559

6,940

6,680

6,430

5,570

2,640

a510

a357

2,750

82,486

2,750

-474

Adjusted for change In reservoir contents

Hean 

Cfsm 

In.

5,126 

0.652 

0.75

8,158 

1.04 

1.16

Calendar year 1956: 

Water year 1956-57:

11,260 

1.43 

1.65

9,646 

1.23 

1.41

7,729 

0.983 

1.02

15,320 

1.95 

2.25

22,800 

2.90 

3.23

Observed

13,370 

1.70 

1.96

Max 92,900 Min 357 Hean 13,350 

Max 35,000 Hln 357 Mean 9,324

6,115 

0.777 

0.87

6,517 

0.829 

0.96

Adjusted

2,620 

0.333 

0.38

2,276 

0.289

0.32

Mean 13,580 Cfsm 1.73 In. 23.50 

Hean 9,250 Cfsm 1.18 In. 15.96

Peak discharge (base, 61,OOO ofs). No peak above base.

* 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 233.

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. 22-25, 30, Jan. 1 to Feb. 24, Feb. 28 toHar. 3.
CONNECTICUT RIVER BASIN 199

Mill River at Northampton, Mass.

Location. Lat 42°19'05", long 72°39'21", on right bank at Northampton, Hampshire County, 

3^ miles upstream from mouth.

Drainage area. 52.8 sq mi.

Records available.--October 1938 to September 1957. October 1938 monthly discharge only, 

published in WSP 1301.

Gage. Water-stage recorder and concrete control. Altitude of gage is 140 ft (from topographic map).

Average discharge. 19 years, 97.3 cfs.

Extremes. Maximum discharge during year. 660 cfs Feb. 27 (gage height, 3.81 ft); maximum 

 gage height, 4.64 ft Jan. 23 (ice jam); minimum discharge, 4.0 cfs July 23, Aug. 24,

25; minimum daily, 4.2 cfs Aug. 21, 23, 24.

1938-57: Maximum discharge, 6,300 cfs Aug. 19, 1955 (gage height, 11.78 ft), from

rating curve extended above 3,700 cfs on basis of computation of peak flow over dam;

minimum, 2.2 cfs Oct. 1, 1950; minimum daily, that of Aug. 21, 23, 24, 1957.

Remarks. Records excellent except those for periods of ice effect or no gage-f eight 

record, which are fair. Flow regulated by mill above station.

Revisions (water years) . WSP 921: 1940. WSP 1231: 1940-42(M), 1944-45(M), 1948(M), 

1949.

Rating table, water year 1956-57, except periods of lee effect 

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

(gage

1.36

1.4

1.5

1.6 

1.8

4.E 

5.0 

7.8

IE

26

2.1 

2.5 

3.0 

3.5

63

138

290

500

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

31

30

*26

24

34

28

39

45

F9

21

17

16

14

14

17

16

16

*14

13

12

12 

12

17 

30

24

18

16 

15

15

14

14

643

20.7

0.392

0.45

Hov.

36

76

75

41

30

25

21

21

26

20

11

21

24

21

»19

18

18

31

33

25

31 

183

75 

43

33

39

42 

38

34

30

1,146

38.2

0.723

0.81

Dec.

26

25

28

30

33

30

33

47

60

47

39

96

114

*99

78

131

128

91

66

76

72 

81

106 

106

158

105

82 

85

80

57

60

2,269

73.2

1.39

1.60

Jan.

65

55

60

70

65

50

55

52

50

47

45

46

45

40

40

42

43

40

39

39

38 

45

370 

150

95

78

71 

65

65

60

58

2,083

67.2

1.27

1.47

Feb.

56

54

55

57

56

50

50

50

50

70

63

45

50

47

46

42

44

43

44

37

H43 

48

52

93

460 

*212

-

1,991

71.1

1.35

1.40

Mar.

143

125

110

95

88

80

110

102

71

83

83

129

158

254

204

136

123

112

110 

125

118 

114

98

92

92 

100

96

94

82

3,470

112

2.12

2.44

Apr.

72

102

106

*81

165

597

252

174

183

180

185

185

163

138

125

116

114

98

91

89

83 

75

72 

69

66

68

64 

63

59

53

3,888

123

2.33

2.60

May

49

45

45

45

44

43

*41

38

34

33.

108

150

96

75

114

74

57

50

49

117

~89 166 

74 

117

72

62

69 

64

52

45

38

2,155

69.5

1.32

1.52

June

34

37

48

39

34

30

35

39

31

25

21

19

*20

17

16

16

14

11

12

20

18

14

11 

10

8,6

21

22 

22

18

21

683.6

22.8

0.432

0.48

July

22

18

14

11

12

12

11

9.8

12

11

11

10

9.0

9.0

8.6

7.8

6.8

6.2

6.0

5.5

5.2 

5.5

t*5.0

5.0

8.3 

6.8

*7.4

8.6

8.6

282.9

9.15

0.175

0.20

A.g.

7.1

67?

6.0

5.8

5.5

5.2

5.2

5.2

5.0

5.0

5.0

4.8

4.8

4.6

4.8

4.6

4.6

4.4

4.4

4.4

fci 4)2

4.2

4.4

5.0

4.6 

4.6

*5.0

5.4

5.1

153.7

4.96

0.094

0.11

Sept.

5.0

4.8

5.0

5.0

6.0

5.4

5.0

5.4

5.0

4.7

5.2

4.8

4.6

6.4

6.0

5.8

10

8.0

6.0

5.5

5.2 

5.0

6.6 

5.7

5.2

5.0

4.7 

4.6

4.5

4.4

164.5

5.48

0.104

0.12

Calendar year 1956: Max 883 Mln 6.7 Mean 89.5 Cfsm 1.70 In. 23.08

Water year 1956-57: Max 460 Mln 4.2 Mean 51.3 Cfam 0.972 In. 13.20

Peak discharge (base, 1,250 cfs). Ho peak above base

* Discharge measurement made on this day.

Note. Ho gage-height record Aug. 30 to Sept. 30j discharge estimated on basis of weather records, 

recorded range In stage, and records for West Branch Westfleld River at Huntlngton. Stage-discharge 

relation affected by Ice Hov. 23-25, Dec. 18, 19, 26, 27, Dec. 29 to Feb. 17, Peb. 20-22, Mar. 2-6, 

10, 11.
200 CONNECTICUT RIVER BASIN

Ware River near Barre, Mass.

Location. Lat 42°25'35", long 72°01'30", on left bank 1,100 ft downstream from bridge at 

Barre Falls, 1.6 miles upstream from Burnsliirt River, and 4 miles east of Barre, 

Worcester County.

Drainage area. 55.0 sq mi.

Records available. July 1946 to September 1957.

Gage.--Water-stage recorder. Altitude of gage is 745 ft (from topographic map).

Average discharge. 11 years, 95.1 cfs.

Extremes. Maximum discharge during year, 365 cfs Jan. 24 (gage height, 4.22 ft); maximum 

gage height, 4.63 ft Jan. 24 (backwater from ice); minimum discharge, 1.0 cfs Sept. 13.

1946-57: Maximum discharge, 1,890 cfs Oct. 16, 1955 (gage heiglrt, 6.31 ft), from 

rating curve extended above 960 cfs by logarithmic plotting; minimum, that of Sept. 13, 

1957.

Remarks. Records good except those for periods of ice effect, which Ere fair. Some regulation by Long Pond and other small reservoirs.

Rating tables, water year 1956-57, except periods of ice effect (gage 

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

Oct. 1 to Nov. 22

2.2 9.8

2.4 19

2.7 40

3.1 82

3.5 153

Nov. 23 to Sept. 30

2.0 

2.2 

2.4

1.6 

2.4 

4.9 

9.5

2.7 

3.0 

3.5 

4.0 

4.5

34

64

145

236

485

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

*21

18

16

17

28

26

42

52

39

29

25

20

19

17 

16

15

14 

14

13

1.1

11

11

22

37

34

28

25

23

*20

19

20

702

22.6

0.411

0.47

Nov.

30

40

44

43

38

33

29

29

36

35

29

29

36

36 

32

30

29 

38

42

37

43

110

143

TIT

81

87

107

96

83 

72

1,631

54.4

0.989

1.10

Dec.

57

50

48

46

*44

42

44

50

61

63

58

111

159

145

161 

150

120

118

101

91

93

96

114

112

102

94

84

74

70

2,865

92.4

1.68

1.94

Jan.

67

64

60

57

57

53

51

51

52

52

50

49

46

43 

41

*40

39 

37

36

36

40

80

250

345

32F

250

190

140

105

74

2,863

92.4

1.68

1.94

Feb.

64

67

80

85

85

77

80

76

72

77

81

*73

70

63 

59

56

55 

52

54

50

48

48

48

52

56

80

166

201

-

2,075

74.1

1.35

1.40

Mar.

161

129

109

91

81

74

72

70

91

121

107

105

97

121 

152

207

245

2T2

168

147

137

145

145

139

129

120

116

111

*107 

105

102

3,916

126

2.29

2.65

Apr.

94

112

154

143

141

240

300 230~

227

210

207

201

201

182 

159

143

135 

127

120

114

107

99

88

83

76

74

74

70

64

*59_

4,264

142

2.58

2.88

May

54

50

44

42

41

38

35

28

29

29

78

120

T16

94 

94

112

94 

76

65

67

90

84

69

70

59

58

77

70

58 

48

40

2,029

65.5

1.19

1.37

June

44

38

44

38

31

23

24

26

24

21

19

18

16

16 

15

14

13

12

27

118

129

74

46

31

26

37

109

109

77 

62

1,281

42.7

0.776

0.87

July

50

38

29

26

24

23

19

16

15

13

11

10

9.2

9.8 

9.0

*8.0

7.0 

6.6

6.2

5.5

5.3

5.3

8.6

6.4

4.9

4.6

4.2

4.4

4.7 

5.7

* 6.4

395.8

12.8

0.233

0.27

Aug.

6.8

6.2

5.1

7.0

*16

11

8.5

6.8

6.2

5.5

5.5

5.3

5.7

5.3

5.1

4.9

4.4 

4.0

3.7

3.6

3.5

3.6

3.6

5.0

3.6

6.8

5.5

4.2

4.1 

4.0

4.0

172.5

5.56

0.101

0.12

Sept.

3.6

3.2

3.1

2.9

3.1

2.9

2.7

2.8

2.6

2.2

2.4

2.4

2.4

2.9 

3.2

4.4

if

8.5

7.0

6.4

6.2

6.0

5.3

4.6

4.2

3.8

3.5

3.5 

3.5

132.3

4.41

0.080

0.09

Calendar year 1956: Max 779 Kin 3.8 Mean 99.0 Cfsm 1.80 In. 24.49

Water year 1956-57: Max 345 Mln 2.2 Mean 61.2 Cfsm 1.11 In. 15.10

* Discharge measurement made on this day.

Kote. Stage-discharge relation affected by ice Nov. 25, Dec. 1, 2, 10, 11, Dec. 30 to Jan. 28, 

Jan. 30 to Feb. 3, Feb. 5-9, 11-24, Mar. 9 (no gage-height record Jan. 3-15, 18-23} discharge estimated on basis of weather records and records for station at Coldbrook).
CONNECTICUT RIVER BASIN 201

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 1957.

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. 29 years, 167 cfs.

Extremes.--Maximum daily discharge during year, 631 cfs Jan. 24; minimum daily, 7.0 cfs 

Sept. 11, 12.

1928-57: Maximum discharge, 14,000 cfs Sept. 21, 1938 (gage height, 664.28 ft), by 

computation of flow over dam; minimum daily, 4.7 cfs Sept. 6, 1953.

Remarks. Records good. Figures of discharge include diversion as needed for Boston metropolitan district during period Oct. 15 to June 14 of each year; dlversior began 

in March 1931.

Cooperation. Computations of dally discharge made in cooperation with Water Division,

Metropolitan District Commission, which collected gage-height and venturi-ireter records.

Revisions (water years).--WSP 781: Drainage area. WSP 1031: 1944.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

47

38

83

54

64

53

95

105

73

56

47

41

37 

36

34

32

30

28 

26

24

23

24

39

45

49

47

43

28

30

30

27

1,388

44.8

0.463

0.53

Nov.

3053"

67

49

58

51

46

45

56

55

47

49

58 

58

54

48

47

56 

63

59

87

263

261

210

140

168

188

163

136

131

2,796

93.2

0.963

1.07

Dec.

109

96

90

78

80

79

82

89

109

120

119

264

327 

306

264

293

290

243 

202

196

172

162

166

172

223

194

173

172

154

126

126

5,276

170

1.76

2.03

Jan.

125

117

111

104

107

99

98

100

101

101

97

96

95 

81

81

79

79

78 

'6953

73

173

586

631

578

431

311

264

230

202

177

5,527

178

1.84

2.12

Feb.

174

163

150

162

160

145

145

140

136

149

160

136

126 

119

111

104

105

109 

109

101

94

93

94

93

105

207

390

361

-

4,141

148

1.53

1.59

Mar.

287

229

187

161

150

143

138

141

208

222

208

193

196 

254

315

452

449

393 

313

274

234

288

274

267

259

189

223

186

202

186

185

7,406

239

2.47

2.85

Apr.

189

268

305

258

354

564

581

495

410

372

405

377

376 

337

284

263

225

204 

216

179

184

151

142

149

144

142

135

141

135

 

118

8,103

270

2.79

3.11

May

108

99

94

90

90

86

80

73

72

78

147

221

207 

174

186

197

160

140 

135

127

161

161

139

128

112

126

126

118

97

811°

3,883

125

1.29

1.49

June

69

67

85

74

61

49

53

53

48

47

43

40

38

35

33

29

28

26 

130

249

193

110

71

58

51

136

223

173

127

103

2,502

83.4

0.862

0.96

July

87

71

58

51

47

47

42

38

34

32

30

26

25 

25

25

22

20

15 

14

14

13

13

16

14

13

12

12

12

13

15

16

872

28.1

0.290

0.34

Aug.

15

14

12

26

30

21

18

18

18

18

17

17

17 

16

16

15

15

14 

12

12

12

12

27

15

14

12

13

13

30

13

9.0

511.0

16.5

0.170

0.20

Sept.

8.8

8.8

8.8

8.8

8.8

8.8

8.5

8.4

7.6

7.3

7^0

7.0

7.1 

8.4

9.1

11

19

23

16

14

13

13

12

11

11

10

9.7

9.1

8.8

8.0

311.8

10.4

0.107

0.12

Calendar year 1956 : Max 1,720 Min 10 Mean 189 Cfsm 1.95 In. 26.61

Water year 1956-57 : Max 631 Min 7.O Mean 117 Cfsm 1.21 In. 16.41

50569Z O - 59 - 14
202 CONNECTICUT RIVER BASIN

Ware River at Gibbs Crossing, Mass.

Location. Lat 42°14'07", long 72°16'45", on right bank half a mile upstream from Gibbs 

Crossing, Hampshire County, 1.8 miles upstream from Beaver Brook, and 2? miles southwest of Ware.

Drainage area. 199 sq mi.

Records available.--August 1912 to September 1957.

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 diffsrent datum.

Average discharge. 45 years, 324 cfs (adjusted for diversion).

Extremes. Maximum discharge during year, 2,200 cfs Jan. 23 (gage height, 5.11 ft); minimum, 16 cfs Sept. 15; minimum daily, 19 cfs July 11.

1912-57: Maximum discharge, 22,700 cfs Sept. 21, 1938 (gage height, 18.2 ft, from 

floodmarks), 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, 1914.

Remarks . Records good except those for periods of ice effect, which ar3 fair. Plow 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. WSP1031: 1944. W3P1301: 1914(M).

Rating tables, water year 1956-57, except periods of ice effect (gage

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

(Backwater from aquatic vegetation May 27 to Sept. 30)

Oct. 1 to Jan. 23 Jan. 24 to Sept. 3O

1.7

1.8 

Z.I 

Z.4 

2.7

175 

3OO

3.O 

3.5 

4.0 

4.2

465

85O

1,290

1,47O

1.6

1.7

1.8 

2.1 

2.4

16

24

175

2.7 

3.0 

3.5 

4.O 

4.3

300

460

780

1,180

1,450

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

116

82

58

104

*138

60

107

281

140

111

104

78

57

45

125

74

74

65

79

34

32.

97

78

79 

100

86

71

37

149

» 70

69

2,800

90.3 

0

Nov.

81

110

68

92

180

1O2

107

91

109

59

65

173

110

*114

112

110

53

81

213

121

142

356

569

373

260

331

248

274

211

203

5,118

171 

O

Dec.

134

141

210

155

141

137

152

107

148

244

205

468

696

690

531

565

*706

595

447

387

351

267

361

378 

493

528

408

365

244

255

375

10,884

351 

O

Jan.

2O5

328

237

207

156

165

26O

200

190

185

200

16O

140

285

2OO

180

185

205

16O

175

190

215

1,4OO

1.450 

*1,04O

852

675

580

472

418

354

11,669

376 

O

Feb.

338

283

290

33O

315

275

260

264

225

315

380

285

250

217

210

155

188

223

186

191

169

151

136

T72 

216

27O

*653

731

7,678

274 

O

Mar.

610

466

395

365

269

251

244

234

35O

520

454

436

395

454

532

738

836 73"8

466

370

355

400

346

355 

38O

294

299

292

*276

253

345

12,718

410 

42.6

Apr.

370

326

46O

375

430

940

820

634

616

562

574

538

490

478

408

375

365

355

34O

335

325

320

291

286 

273

264

26O

278

278

251

12,617

421 

132

May

236

214

*198

194

186

204

175

157

140

136

235

375

430

345

370

440

341

26O

242

293

305

310

273

294

230

194

238

218

186

120

TzT

7,666

247 

0

June

1OO

115

168

107

97

83

76

69

74

76

56

53

58

*46

42

44

46

42

46

251

268

178

104

90 

58

99

4Z3 286"

202

151

3,508

117 

0

July

ii| T5

72

62

61

61

57

52

80

49

19

34

Z7

33

41

35

32

30

32

22

27

33

32

28

26

26

25

23

27

29

34

1,311

42.3 

0

Aug.

33

32

29

36

50

47

37

33

*32

32

31

33

30

28

28

28

26

26

28

27

26

29

27

27 

29

33

31

28

27

31

35

969

31.3 

0

Sept.

28

27

28

27

29

29

28

24

27

26

27

26

27

26

I!

29

32

33

34

. 34

3i

38

35

32 

32

37

26

23

21

23

867

28.9

O

Adjusted for diversion

Mean 

Cfsm 

In.

90.3 

O.454 

0.52

171 

O.859 

O.96

351 

1.76 

2.03

376 

1.89 

Z.18

274 

1.38 

1.43

453 

2.28

2.62

553 

2.78 

3.10

247 

1.24 

1.43

Observed

Calendar year 1956: 

Water year 1956-57:

Max 2,370 Min 14 Mean 359 

Max 1,450 Mln 19 Mean 213

117 

O.588 

0.66

42.3 

0.213 

O.24

31.3 

0.157 

0.18

Adj isted

28.9 

0.145 

0.16

Mean 374 Cfvn 1.88 In. 25.56 

Mean 228 Cfvn 1.15 In. 15.51

Peak discharge (base, 1.3OO cfs).--Jan. 23 (7:30 p.m.) 2,2OO cfs (5.11 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.

Note. Stage-discharge relation affected by ice Dec. 30 to Jan. 1, Jan. 6-25, Feb. 3, 5-7, 9, 

11-13, 16.
CONNECTICUT RIVER BASIN 203

Hop Brook near New Salem, Mass.

Location.--Lat 42°28'42" ( long 72°20'05", on right bank 1.5 miles upstream frcro mouth and 

1% miles south of New Salem, Franklin County.

Drainage area. 3.39 sq mi.

Records available. October 1947 to September 1957. 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. 10 years, 6.33 cfs.

Extremes. Maximum discharge during year, 135 cfs June 26 (gage height, 2.63 ft), from 

rating curve extended above 78 cfs by logarithmic plotting; minimum, 0.006 cfs 

Aug. 24, 25.

1947-57: Maximum discharge, 275 cfs Aug. 19, 1955 (gage height, 3.13 ft), from 

rating curve extended above 78 cfs by logarithmic plotting; minimum, 0.004 cfs Aug. 3, 

9, 10, 1955.

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

which are fair.

Hating tables, water year 1956-57, except periods of Ice effect (gage 

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

Oct. 1 to Jan. 23 Jan. 24 to Sept. 30

Note. Same as 

following table 

above 1.2 ft.

0.32

.4

.5

.6

.7

.8 

1.0

0.01

.04

.15

.37

.71

1.20

2.6

1.2 

1.4 

1.6 

1.8

2.0

2.1

4.6 

9.O

17.1

29

45

54

Discharge, in cubic feet per second, water year October 1956 to September If 57

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.

1.22

1.05

1.22

2.8

3.1

1.7

4.8

175

1.7

1.4

1.3

1.22

1.22

1.22

1.16

1.10

1.05

.99

*.94

.88

.94

.94

3.3

2.1

1.4

1.3

1.3

1.22

1.10

1.05

1.16

48.48

1.56

0.460

0.53

Nov.

3.7

5.1

3.8

£.4

2.0

1.75

1.6

2.15

2.5

1.75

1.45

2.7

2.7

2.0

1.75

1.7

1.7

2.7

2.35

2.35

8.4

28

7.6

5.3

4.4

5.9

*5.9

4.6

4.2

 -' 

126.25

4.21

1.24

1.39

Dec.

'57s 3.5

3.6

3.8

3.5

3.9

4.4

4.1

4.4

3.S

5.4

22

14.0

8.8

8.0

16.1

11.3

9.0

8.5

7.0

6.8

7.9

8.0

9.6

13.8

8.5

7.6

6.8

6.8

b5.3

b5.0

234.7

7.57

2.23

2.57

Jan.

b4.6

b4.3

b4.0

b4.0

b4.1

3.8

3.8

3.8

3.7

3.9

3.7

3.6

3.5

3.3

3.0

3.2

3.0

3.0

2.9

2.9

3.5

10.0

50

25

13.0

9.0

7.5

6.4

5.6

5.0

4.4

211.5

6.82

2.01

2.32

Feb.

3.9

4.1

4.8

5.2

4.8

4.5

*4.2

4.2

b4.5

7.2

b5.0

b4.6

4.0

3.9

3.8

b3.6

3.8

3.5

3.4

5.1

3.4

3.3

3.3

3.4

4.3

11.0

25

bll.O

_

150.8

5.39

1.59

1.65

Mar.

8.2

6.6

5.6

b5.2

bS.l

bS.l

5.1

5.2

9.2

7.4

b6.0

5.9

*7.3

9.4

9.1

16 1

ToTo

8.0

7.2

7.O

8.9

8.5

7.2

6.5

6.1

5.9

5.9

5.6

5.4

6. 6

5.7

221.0

7.13

2.10

2.42

Apr.

5.O

13.1

8.2

6.5

14.8

26

14.0

1O.8

10.8

12.4

13.4

13.0

10.8

8.8

8.0

7.5

7.2

6.6

*6.3

6.1

5.7

5.4

4.8

4.8

4.5

4.8

4.4

4.1

3.8

__._:rr255.3

8.51

2.51

2.80

May

3.3

3.1

3.1

3.1

3.0

2.9

2.6

2.4

2.25

9.3

8.8

4.9

5.1

6.O

4.6

3.3

3.4

3.0

13.1

9.3

5.2

*4.2

3.6

2.9

7.8

5.9

5.9

3.8

3.0

2.6

144.15

4.65

1.37

1.58

June

2.4

3.9

3.4

2.4

2.15

1.9

2.7

2.05

1.65

1.4

1.20

1.20

1.05

.94

.84

.63

.47

.ill

6.7

4.0

1.5

.94

.71

.61

.58

29

7.3

*3.4

3.7

2.4

91.53

3.05

0.900

1.00

July

1.85

1.3

1.05

1.35

1.9

1.35

.80

.61

.67

.66

.49

.40

.46

.51

.29

.22

.17

.14

.11

.08

.06

706

.16

.12

.15

.08

.07

.11

.81

1.20

.46

17.69

0.571

0.168

0.19

Aug.

0 21 *jio

.05

.10

.19

.06

.03

.02

*.02

.02

.04

.02

.02

.01

701

.02

.02

.01

.01

.02

.01

.02

.02

.01

.04

.21

.08

.03

.02

.02

.03

,1.47

0.047

0.014

0.02

Sept.

"702 0.02

.02

.13

.43

.12

.06

.06

.04

*.02

.03

.07

.36

.55

.37

.57

1.4

.43

.12

.08

.09

.12

.11

.09

.05

.05

.04

.04

.04

.05

5.58

0.186

0.055

0.06

Calendar year 1956: Max 76 Mln 0.02 Mean 6.51 Cfsm 1-92 In. 26.14

Water year 1956-57: Max 50 Mln 0.01 Mean 4.13 Cfsm 1.22 In. 16.53

Peak discharge (base, 72 cfs). Jan. 23 (time unknown) 88 cfs (2.37 ft); June 26 (1:30 p.m.) 135 cfs 

(2.65 ft).______________________________________________________________________

* Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Jan. 6 to Feb. 6; discharge estimated on basis of weather records, 

recorded range In stage, and records for East Branch Swift River near Hardwlck and Ware River near 

Barre.
204 CONNECTICUT RIVER BASIN

East Branch Swift River near Hardwlck, Mass.

Location. Lat 42°23'36", long 72°14'2l", 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 1957. Published as "near Dana" January 1937 

to September 1939.

Sage.--Water-stage recorder. Concrete spillway since Mar. 12, 1940. Datum of gage is 

504.70 ft above mean sea level, datum of 1929.

Average discharge. 20 years, 71.0 cfs.

Extremes^ Maximum discharge during year, 540 cfs Jan. 23 (gage height, 20.495 ft); no 

flow Aug. 21-25, Aug. 28 to Sept. 15.

1937-57: 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 

at times in 1939, 1949, 1953, 1957.

Remarks. Records good.

Rating table, water year 1956-57 (gage height, In feet, and 

discharge, In cubic feet per second)

19.1

19.15

19.2

19.25

19.3

19.35

0

.4 

1.6 

3.8

7.2

12

19.4

19.5

19.6

20.0

20.3

18

36

67

239

410

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

22

19

18

20

31

32

46

51

44

36

30

25

23

23

23

23

23

20

17

15

15

14

18

21

19

17

16

16

15

15

15

722

23.3

0.533

0.61

Nov.

20

36

33

34

31

27

23

25

34

33

29

31

34

32

30

28

27

38

36

33

30

125

157

109

73

71

71

64

54

48

1,416

47.2

1.08

1.21

Dec.

39

35

38

34

34

34

35

39

54

54

50

117

181

146

148

134

155

138

105

92

82

80

90

90

113

117

97

86

82

80

65

2,644

85.3

1.95

2.25

Jan.

61

53

48

48

50

46

48

48

45

50

48

44

42

40

36

40

38

36

34

34

34

37

303

410

229

157

117

96

90

80

69

2,511

81.0

1.85

2.14

Feb.

67

64

61

67

62

61

57

54

54

62

67

59

53

50

45

42

40

38

39

36

34

33

34

34

36

50

155

181

-

1,635

58.4

1.34

1.39

Mar.

144

105

82

64

56

56

54

54

100

109

96

86

78

96

130

188

205

161

128

111

103

109

111

107

96

86

80

76

75

76

73

3,095

99.8

2.28

2.63

Apr.

65

84

123

115

121

253

 214 293

181

153

159

164

161

146

121

103

92

88

82

75

71

64

57

54

51

48

51

50

45

!§

3,323

111

2.54

2.83

May

34

31

27

28

29

28

28

25

24

.23

54

99

109

90

88

92

75

59

50

56

101

99

78

67

51

50

61

59

51

39

34

1,739

56.1

1.28

1.48

June

28

29

32

30

27

24

25

23

20

16

15

13

13

11

11

10

8.8

7.2

13

J56

51

31

21

16

14

19

54

64

39

32

743.0

24.8

0.568

0.63

July

26

19

14

13

13

11

10

8.4

6.8

5.7

4.4

4.1

3.6

3.8

3.0

2.5

1.7

1.4

1.1

1.0

.8

.6

.6

.6

.6

.5

.6

.6

.8

1.4

1.7

162.3

5.24

0.120

0.14

Aug.

1.2

.8

.6

2.4

4.7

4.4

3.6

2.3

1.7

1.4

1.2

1.1

.6

.3

.2

.2

.2

.1

.1

.1

0

0

0

0

0

.1

.1

0

0

0

0

27.4

0.88

0.020

0.02

Sept.

0

o

0

o

0

0

0

0

0

0

0

0

0

0

0

.1 1.1

1.7

1.4

1.0

1.4

1.1

2J3

1.7

1.4

1.1

.6

.5

.4

.4

16.7

0.56

' 0.013

0.01

Calendar year 1956: Max 802 Mln 1.9 Mean 79.8 Cfsm 1.83 In. 24.85

Water year 1956-57: Max 410 Mln 0 Mean 49.4 Cfsm 1.13 In. 15.34

Peak discharge (base, 550 efs).--Jan. 25 (10 to 12 p.m.) 540 cfs (20.495 ft)
CONNECTICUT RIVER BASIN 

Swift River at West Ware, Mass.

205

Location. Lat 42°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 Belchertowr .

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 1957.

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 detum.

Average discharge.--45 years (1912-57), 306 cfs (adjusted for storage and diversions).

Extremes. Maximum discharge during year, 184 cfs Sept. 16 (gage height, 3.00 ft); minimum daily, 33 cfs Feb. 22, May 30.

1910-57: 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. 233). Diversion from Ware River to Quabbin Reservoir since 1940, from Qrabbin 

Reservoir to Wachusett Reservoir since 1941, and from Quabbin Reservoir to Chicopee 

Valley aqueduct since 1950.

Revisions (water years). WSP 401: Drainage area. WSP 451: 1916. WSP 871: 1919. 

WSP 1031:1944 (changes in reservoir contents and adjusted figures only). WSP 1301: 

1925(M).

Rating table, water year 1956-57 (gage height, In feet, 

and discharge, In cubic feet per second)

1.9 

2.1 

2.5 

3.0 184

Discharge, In cubic feet per second, water year October 1956 to September 19£7

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.

117

105

105

*105

104

98

130

136

10T

104

101

35

68

47

109

101

102

99

99

97

125

124

102

101

103

91

99

120

132

103

115

3,181

103

-17.6

Nov.

127

126

101

120

134

103

101

115

126

99

122

122

136

*105

102

102

85

124

138

T54

104

40

113

90

122

133

104

104

103

103

3,308

110

+90.8

Dec.

59

47

110

103

103

102

102

59

48

115

103

107

105

*102

58

50

113

105

103

103

102

58

49

115

36

117

OT

104

62

49

a!15

2,708

87.4

+322

Jan.

a35

al!5

a!05

a!05

a60

a50

al!5

a!05

102

103

103

59

48

110

loo

1OO

100

*106

59

48

112

96

100

87

87

53

48

114

102

102

102

2,731

88.1

+213

Feb.

101

58

45

111

100

101

100

100

57

48

112

Too

98

96

101

56

45

111

102

102

102

33

67

44

106

98

106

102

-

2,402

85.8

+181

Mar.

104

57

48

112

102

102

103

103

63

49

114

103

103

103

103

62

48

113

104

103

104

103

59

48

112

103

102

102

102

58

47

2,739

88.4

+243

Apr.

Ill

106

*102

105

108

65

50

113

156

109

108

87

41

49

47

50

93

104

36m

48

110

102

97

102

101

57

47

108

101

2,531

84.4

+370

May

101

101

*102

55

43

110

103

101

102

101

60

47

91

100

100

102

100

57

44

109

101

104

101

102

57

44

108

102

101

109" 33

2,691

86.8

+193

June

56

44

109

99

97

100

97

55

41

94

80

83

82

*82

86

122

131

101

116

123

123

98

122

144

T22

125

124

113

57

45

2,871

95.7

+79.5

July

109

102

102

76

135

99

128

140

105

105

99

103

58

48

116

104

104

100

113

100

50

132

114

126

113

99

60

48

112

102

110

3,112

100

-128

Aug.

119

110

55

a45

allO

alOO

101

110

124

100

122

131

101

*109

110

125

100

119

130

114

125

127

125

108

133

132

116

127

125

120

103

3,476

112

-171

Sept.

128

128

148

126

al25

a!25

a!05

a!25

a!50

a!25

122

123

125

105

128

151

125

125

124

125

106

130

148

120

127

126

126

106

130

151

3,808

127

-169

Adjusted for diversion and change In reservoir contents

Mean 

Cfsm 

In.

85.1 

0.453 

0.52

201 

1.07 

1.19

Calendar year 1956: 

Water year 1956-57:

409 

2.18 

2.51

301 

1.60 

1.85

267 

1.42 

1.48

331 

1.76 

2.03

455 

2.42 

2.70

280 

1.49 

1.72

Observed

Max 1,800 Mln 35 Mean 255 

Max 151 Mln 33 Mean 97.4

175 

0.931 

1.04

-28.0 

-0.149 

-0.17

-59.1 

-0.314 

-0.36

Adjusted

-42.3

-0.225 

-0.25

Mean 349 Cfsm 1.86 In. 25.27 

Mean 197 Cfsm 1.05 In. 14.26

* 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 Chicopee Valley Aqueduct, equivalent In cubic feet per second.

* Negative figures Indicate that evaporation and seepage from reservoir exceeded Inflow, 

a No gage-height record; discharge estimated on basis of weather records, recorded rarge In stage, 

and typical regulation pattern.
206 CONNECTICUT RIVER BASIN

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 3j miles northeast of Palmer.

Drainage area. 151 sq mi.

Records available. August 1909 to August 1912 (twice-daily gage heights and corresponding discharges), September 1912 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 390 ft (from topographic map). Prior to 

wig. 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. 45 years (1912-57), 244 cfs.

Extremes. Maximum discharge during year, about 780 cfs Jan. 23; maximum gage height, 

7.17 ft Jan. 23 (ice jam); minimum daily discharge, 6.6 cfs Sept. 28, 29.

1909-57: Maximum discharge, 12.800 cfs Aug. 19, 1955 (gage height, 15.36 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, that of Sept. 28, 29, 

1957.

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

which are fair. Slight diurnal fluctuation at low flow caused by mill above station 

prior to 1956; regulation much greater prior to 1938.

Revisions (water years). WSP 451: 1916. WSP711: Drainage area. WS^lSOl: 1918(M).

Rating tables, water year 1956-57, except periods of ice effect (gage 

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

Oct. 1 to Jan. 23 Jan. 24 to Sept. 30

2.5 

2.8 

3.1

32

75

129

3.5 

4.0 

5.0

214

339

690

2.0

2.1

2.2

6.6

9.6

14

2.5 

2.8

Note.--Same as preceding 

table above 2.8 ft.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

3O

31

Total

Mean

Cfsm

In.

Oct.

58

57

57

58

*69

66

80

84

75

75

72

69

66

62

60

60

55

50

46

43

42

41

45

48

44

43

42

42

47

53

52

1,767

57.0

0.377

0.44

Nov.

69

75

75

69

64

65

64

62

62

52

50

56

48

*46

47

46

42

70

80

77

87

192

TB5

143

140

149

149

143

143

137

2,670

89.0

0.589

0.66

Dec.

125

115

114

103

99

101

99

97

120

125

127

223

232

242

256

284

*302

281

275

264

256

254

266

266

281

274

260

251

244

150

230

6,316

204

1.35

1.56

Jan.

200

190

175

165

165

160

160

160

160

160

160

160

155

140

150

145

140

130

125

120

130

220

500

590

*55o

510

480

445

420

375

350

7,720

249

1.65

1.90

Feb.

320

290

270

280

284

278

261

249

237

260

300

310

300

290

270

260

270

230

200

180

175

170

Tfo

185

210

260

*320

525

7,152

255

1.69

1.76

Mar.

551

531

315

296

276

261

251

244 30"9~

302

328

347

336

356

361

425

406

409

409

385

385

412

385

367

350

347

334

317

*299

299

291

10,464

338

2.24

2.58

Apr.

278

315

320

317

384

566

558

582

622

STo

614

606

562

526

502

478

444

419

391

364

334

312

299

281

266

251

239

221

205

_____

12,049

402

2.66

2.97

May

172

160

147

145

145

137

125

*118

114

112

183

196

177

190

201

203

197

192

177

196

201

183

183

181

179

174

164

143

147

131

121

5,089

164

1.09

1.25

June

110

118

-§9~ 121

89

82

77

68

64

59

55

51

47

46

43

39

*37

34

37

46

38

35

33

32

37

42

47

44

44

42

1,711

57.0

0.377

0.42

J'lly

45

45

38

37

36

34

32

32

31

30

26

26

26

26

24

24

22

21

21

18

18

21

23

20

20

19

18

18

18

17

17

798

25.7

0.170

0.20

Aug.

21

18

15

17

23

19

17

15

14

14

14

*14

13

12

12

10

11

10

§76- 9.2

9.6

9.6

9.6

9.2

9.6

11

11

9.6

9.6

*9.6

9*6

395.8

12.8

0.085

0.10

Sept.

9.6

10

11

9.6

10

9.2

8.3

8.3

10

12

12

12

11

17

17

19

28

16

11

15

17

16

19

11

8.0

7.4

6.0

676" 6.6

6.8

361.2

12.0

0.079

0.09

Calendar year 1956: Max 1,500 Mln 18 Mean 258 Cfsm 1.71 Ir . 23.24

Water year 1956-57: Max 622 Mln 6.6 Mean 155 Cfsm 1.03 Ir . 13.93

Peak discharge (base, 840 cfs). No peak above base.

* Discharge measurement made on this day.

Hote. No gage-height record Oct. 1-9, 13-22, Feb. 1-4, 10-26; discharge estinated on baaia of 

1 discharge measurement, weather records, recorded range In stagf when available, and records for 

Quinebaug River at Westville and Ware River near Barre. Stage-discharge relation affected by ice 

Nov. 25, Dec. 1, 2, 19, 27, Dec. 30 to Jan. 31.
CONNECTICUT RIVER BASIN 207

Chicopee 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 1957. Published as "at Bircham Bend" prior 

to November 1938.

Gage.--Water-stage recorder. Altitude of gage is 125 ft (from topographic map). Prior 

~to Nov. 1, 1938, at site 1 3/4 miles downstream at different datum.

Average discharge. 29 years, 1,106 cfs (adjusted to present drainage area and for storage and diversions ).

Extremes.--Maximum discharge during year, 3,840 cfs Jan. 24 (gage height, 8.32 ft); minlmum daily, 48 cfs Oct. 28.

1928-57: Maximum discharge, 45,200 cfs Sept. 21, 1938, by computation of flow over 

dam; minimum daily, 19 cfs several times Ln 1929-31.

Remarks. Records excellent except those for periods of ice effect, which are food. Di- 

 version since 1941 from 186 sq mi in Swift River basin and at times since 1?31 from 

97 sq mi in Ware River basin for Boston metropolitan district and, since 19fO, for 

city of Chicopee. Diversion from Ludlow Reservoir for Springfield and, prior to 1952, 

for Chicopee. Flow regulated by powerplants above station, by Quabbin Reservoir on 

Swift River since 1939 (see p. 233), and by smaller reservoirs.

Revisions (water years). WSP 711: Drainage area. WSP 1231: 1934.

Rating table, water year 1956-57, except periods of ice effect (gage 

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

3.2 

3.5 

4.0 

4.5

43

83

195

380

5.0 

6.0 

7.0 

8.0

650

1,390

2,310

3,450

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

26

29

30

31

Total

Mean

(t)

Oct.

548

418

*394

358

430

205

190

732

53T

526

390

228

244

170

465

324

362 

352

370

176

51

392

332

334

313

358

200

48

500

341

355

10,637

343

-15.3

Nov.

418

450

232

211

591

*527

312

419

486

239

53

3TT

754

342

411

404

120 

238

714

602

470

446

1,110

760

692

820

853

7ZO

659

612

14,976

499

+104

Dec.

510

258

433

702

379

480

508

316

319

660

684

956

1,240

1,290

1,150

1,050

1,470 

1,300

*1,110

1,020

990

705

832

1,000

1,120

1,200

1,090

942

837

b720

b670

25,941

837

+329

Jan.

b520

b750

b640

b640

430

516

688

704

b540

b500

b520

b340

b450

b560

bSOO

b540

b400 

b450

b200 b2"50"

b640

*675

b2,000

3,260

2,260

1,860

1,500

1,420

1,350

1,220

1,100

27,423

885

+216

Feb.

1,130

820

698

967

1,020

1,000

894

833

563

708

1,110

1,000

926

889

741

443

480 

779

598

698

655

326

52?

530

744

626

1,140

*1,600

22,464

802

+184

Mar.

1,4,20

1,080

988

1,080

978

868

844

856

633

1,750"

1,200

1,120

1,130

1,090

1,180

1,520

1,670 

17655

1,380

1,150

1,190

1,230

1,110

966

1,140

1,090

1,020

984

938

736

814

34,295

1,106

+288

Apr.

1,030

1,010

*1,290

1,090

1,230

2,240

2.510

1,920

1,980

1,840

1,790

1,700

1,520

1,360

1,420

1,310

1,160 

1,060

1,040

1,020

862

1,080

946

940

912

816

666

644 9"2"4

815

37,945

1,265

+506

May

722

658

656

273

469

735

690

*516

552

576

190

594

951

857

860

936

902 

750

549

824

889

902

862

794

666

476

650

750

701

450

629

21,369

689

+197

June

308

342

620

746

450

468

520

150

194

519

501

401

319

367

112

192

302 

*287

366

376

530

384

308

592

426

438

490

628

420

362

12,118

404

+80.3

July

570

3155

381

216

283

211

54

4SI

450

374

268

259

55

176

308

182

204

181

178

150

103

321

270

206

337

248

55

168

317

201

206

7,906

255

-132

Aug.

236

204

174

56

550

238

*259

211

221

52

182

305

200

211

215

220

112 

105

262

210

196

212

194

114

110

296

275

235

207

234

119

6,215

200

-174

Sept.

108

99

415

255

257

216

106

101

289

256

216

260

215

112

144

527

510 

229

246

288

114

116

389

275

242

252

267

109

107

508

6,589

220

-165

Adjusted for diversion and change in reservoir contents

Mean 

Cfsm 

In.

528 

0.477 

0.55

605 

0.876 

0.98

Calendar year 1956: 

Water year 1956-57:

1,165 

1.69 

1.95

1,101 

1.60 

1.84

986 

1.45 

1.49

1,394 

2.05 

2.54

Observed

1,771 

2.57 

2.87

886 

1.29 

1.48

Max 6,290 Mln 43 Mean 1,121 

Max 5,260 Min 48 Mean 624

464 

0.705 

0.79

125 

0.179 

'0.21

26.6 

C.039 

0.04

54.9 

0.080 

0.09

Adjusted

Mean 1,254 Cfsm 1.79 In. 24.42 

Mean 742 Cfsm 1.08 In. 14.65
208 CONNECTICUT RIVER BASIN

Westfield River at Knightville, Mass.

Location. Lat 42°17 I 16", long 72°51'53", on left bank at Knightville, 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 1957.

Gage. '--Via-cer-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 dlscharge.--48 years, 325 cfs (adjusted for storage).

Extremes. Maximum discharge during year, 2,080 cfs Jan. 24 (gage height, 5.20 ft); minimum, 9.4 cfs Aug. 21; minimum daily, 10 cfs Aug. 18, 19, 21.

1909-57: 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 or shifting control, 

which are good, and those for period of no gage-height record, which are fair. Plow 

regulated by Knightville Reservoir since 1941 (see p. 233).

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 1956-57, except periods of ice effect or shifting 

control (gage height, in feet, and discharge, in cubic feet per second)

2'.0 

2.3 

2.6

6.9

11

26

59

114

3.0 

3.5 

4.0 

4.5 

5.0

225

440

765

1,220

1,810

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

114

*106

95

84

136

121

240

250

180

140

120

105

96

92

88

82

75

70

6666"

66

66

190

220

150

120

110

100

90

80

80

3,598

116

+0.04

Nov.

250

420

470

300

230

200

170

160

180

160

130

140

190

160

*131

121 ife

148

138

121

169

1,150

S38

280

203

205

176

187

178

167

7,178

239

+2.66

Dec.

159

151

154

154

151

151

159

262

330

285

203

243

633

698

447

438

669

*474

280

269

317

334

309

352

543

531

366

313

313

198

9_L

9,983

322

+2.65

Jan.

bieo

196

190

187

190

187

178

181

178

178

156

124

131

b!35

b!40

146

143

146

143

143

138

171

499

919

938

1,440

734

395

376

339

237

9,418

304

-1.57

Feb.

222

261

bZZO

193

265

277

160

176

265

247

b225

bl85

184

184

184

181

173

170

167

121

bllO 119-

124

126

173

257

858

*1,250

-

7,057

252

+8.18

Mar.

706

415

300

b250

b245

2 4O

247

250

250

254

190

184

ZST

339

537

1,030

1,050

 603

473

405

381

430

435

446

385

362

339

330

330

313

288

12,268

396

-10.8

Apr.

269

439

548

*362

465

1,070

1,240

676

600

537

574

634

712

543

442

410

420

420

400

385

366

322

284

265

247

247

232

215

199

178

13,701

457

-0.02

May

161

151

143

138

136

131

*121

114

101

97

322

676

433

292

451

296

215

187

173

392

835

420

300

330

229

203

229

209

173

146

128

7,932

256

-0.07

June

108

110

151

126

101

89

130

164

114

91

75

69

*67

58

101

82

59

47

44

178

101

69

50

44

38

49

142

79

69

79

2,684

89.5

-0.04

Jily

75

50

40

36

49

95

59

43

39

42

40

33

30

29

29

26

22

19

*18

17

16

17

18

18

18

16

18

22

32

46

44

1,056

34.1

-0.04

Aug.

34

25

20

18

24

33

23

23

20

16

16

18

16

16

14

12

11

To- 10

il

10

11

16

16

14

16

22

21

16

18

22

552

17.8

0

Sept.

16

14

14

13

22

18

16

14

13

12_

13

12

13

32

34

27

29

30

26

20

18

16

20

7936-

27

21

18

16

16

657

21.9

0

Adjusted for change in contents in Knightville Reservoir

Mean 

Cfsm 

In.

116 

0.716 

0.83

242 

1.49 

1.67

Calendar year 1956: 

Water year 1956-57:

325

2.01 

2.31

302 

1.86 

2.15

260 

1.60 

1.67

385 

2.38 

2.74

456 

2.81 

3.14

256 

1.58 

1.82

Observed

Max 4,030 Min 14 Mean 322 

Max 1,440 Min 10 Mean 208

89.4 

0.552 

0.62

34.0 

0.210 

0.24

17.8 

0.110 

0.13

21.9 

0.135 

0.15

Adjusted

Mean 322 Ofrm 1.99 In. 27.05 

Mean 208 CfVm 1.28 In. 17.47

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Knightville Reservoir.

b Stage-discharge relation affected by ice.

Note.--No gage-height record Oct. 7 to Nov. 14; discharge estimated on basis of weather records 

and records for Middle Branch Westfield River at Ooss Heights and West Branch Westfield River at 

Huntingbon. Shifting-control method used Oct. 1-6, Nov. 15-28, Jan. 24, 25, Jan. 27 to Feb. 27, 

Mar. 1-16, Mar. 18 to Apr. 5, Apr. 9-12, Apr. 14 to May 11, May 13 to June 17, June 20-22, June 26 

to July 1, July 6, 7, Sept. 23, 24.
CONNECTICUT RIVER BASIN 209

Sykes Brook at Knightville, Mass.

Location. Lat 42°17'27", long 72°52'15", on right bank 200 ft downstream from bridge on 

State Highway 112 at Knightville, Hampshire County, 0.4 mile upstream from mouth, 

0.4 mile west of Knightville Dam, and 3.5 miles north of Huntington.

Drainage area. 1.64 sq mi.

Records available. June 1945 to September 1957.

Gage.--Water-stage recorder and concrete control. Datum of gage is 641.40 ft above mean 

sea level, datum of 1929.

Average discharge.--12 years, 2.77 cfs.

Extremes. Maximum discharge during year, about 19 cfs Jan. 23, occurred during period of 

ice effect; maximum gage height, 2.36 ft Jan. 24 (backwater from ice); minimum discharge, 0.04 cfs Aug. 24, 25.

1945-57: 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, 1953.

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

Rating table, water year 1956-57, except periods of loe effect (gage 

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

.4

O.O3 

.06 

.10 

.16 

.31 

.59 2.0

1.14

2.1

3.8

6.4

10.0

15.0

Discharge, In cubic feet per second, water year October 1956 to September 195T

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

Cfsm

In.

Oct.

0.34

*.27

.27

.47

.70

.42

1.42

*79T

.59

.42

.34

.28

.28

.28

.26

.25

.24

.22

.21

722

.22

.23

1.23

.96

.53

.40

.35

.33

.29

.26

.30

13.52

0.436

0.266

0.31

Nov.

1.00

2.5

1.58

l.OO

.78

.69

.59

.55

.53

.44

.35

.48

.48

.41

*.39

.39

.38

.71

.61

.51

.32

.2

T89

.25

.00

.00

.04

.93

.84

.78

28.62

0.954

0.582

0.65

Dec.

0.67

~7s§ .62

.74

.74

.74

.87

1.14

1.77

1.34

1.29

3.0

3.2

2.6

2.4

4.4

4.0

*3.0

2.0

2.2

2.1

2.7

3.1

3.4

4.0

3.0

2.2

2.3

2.2

1.6

1.5

65.51

2.11

1.29

1.49

Jan.

1.6

1.4

1.5

1.7

1.5

1.25

1.15

1.21

1.18

1.25

1.18

1.18

1.14

1.10

1.04

l.OO

1.00

1.00

.96

.95

1.00

1.8

~J.5 13

2.2

1.9

1.7

1.6

1.55

1.5

1.45

55.47

1.79

1.09

1.26

Feb.

1.4

1.35

1.4

1.45

1.4

.35

.3

.25

.25

.5

.4

.2

.25

.2

.15

.05

.1

.1

.1

.95

.90

796

.1

.14

.34

2.3

9.0

372

-

47.09

1.68

1.02

1.07

Mar.

3.5

3.0

2.5

2.2

2.0

1.9

1.87

2.1

2.4

2.1

1.75

2!?

3.7

4.2

7.8

BT6

4.3

3.8

3.4

3.6

3.5

3.5

3.4

3.1

3.0

2.9

2.8

2.6

2 5

2^1

95.92

3.09

1.88

2.18

Apr.

2.1

3.1

3.0

*2.5

5.5

10.0

7.5 sis

5.2

5.2

5.1

5.1

4.6

3.7

3.2

3.0

2.8

2.6

2.4

2.2

2.1

1.87

1.77

1.72

1.52

1.52

1.42

1.29

1.21

1.14

100.16

3.34

2.04

2.27

May

1.07

.93

.90

.90

.84

.78

*.74

.67

.62

.67

1.44

2.0

1.47

1.50

2.1

1.38

1.10

1.00

.93

3.0

3.0

1.82

1.59

3.6

1777

1.34

1.21

1.25

1.04

 87

.74

42.27

1.36

0.829

0.36

June

0.69

.96

"771 1.00

.65

.55

.80

.72

.57

.46

.38

.32

*.30

.26

.24

.22

.19

.16

.24

.26

.19

.15

.13

.12

.11

.48

.37

.26

.41

.28

12.25

0.408

0.249

0.28

July

0.22

.16

.13

.12

.13

.12

.10

.09

.11

.11

.09

.08

.10

.11

.08

.08

.08

*.07

*.07

.07

.07

.22

.14

.10

.09

.08

.35

TST

.25

.16

. 18

3.98

0.128

0.078

0.09

AUF;.

0.11

.09

.08

.10

.10

.08

.07

.06

.06

.07

.07

.06

.06

.06

.07

.06

.05

.05

.05

.06

.06

.06

.05

.04

.06

.12

.08

.06

.05

.08

.07

2.14

0.069

0.042

C.05

Sept.

0.06

.08

.12

.10

.14

.07

.06

.06

.06

.05

.06

.05

.05

.05

.05

.12

769" .18

.07

.06

.06

.06

.10

.08

.06

.06

.05

.05

.05

.05

2.20

0.073

0.045

0.05

Calendar year 1956: Max 31 Mln 0.07 Mean 2.53 Cfsm 1.54 In. 21.01

Water year 1956-57: Max 13 Mln 0.04 Mean 1.29 Cfsm 0.787 In. 10.66

Peak discharge (base, 55 cfs). No peak above be

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by Ice Dec. 18, 19, 26, 27, Dec. 30 to Jan. 6, Jan. 22 to 

Feb. 23, Feb. 26-28, Mar. 3-6, 11.
210 CONNECTICUT RIVER BASIN

Middle Branch Westfleld River at Goss Heights, Mass.

Location. Lat 42°15'31", long 72°52'23", on right bank at upstream side of highway bridge

at 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 1957. 

Gage . Water-stage recorder. Datum of gage is 400.30 ft above mean sea level, datum of

1929. Prior to Sept. 8, 1912, chain gage at same site. Prior to June 25, 1930, at

datum 1.00 ft higher. 

Average discharge . 47 years, 105 cfs. 

Extremes . Maximum discharge during year, 1,850 cfs Jan. 23 (gage height, 4.07 ft); maximum gage height, 4.97 ft Jan. 23 (ice jam); minimum discharge, 1.8 cfs Aug. 20, 21.

1910-57: 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. 

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

£h~ose for periods of backwater from leaves, which are fair. Some diurnal fluctuation

at low flow prior to 1952 caused by mill above station. 

Revisions (water years). WSP 415: 1910-12 calendar years, WSP 781: 1933(M), drainage

area.

Rating tables, water year 1956-57, except periods of ice effect or b? ckwater from 

leaves (gage height, in feet, and discharge, in cubic feet per recond)

0.4

.5

.7

1.0

1.4

Oct. 1 to Jan. 23 

20

Jan. 24 to Sept. 3O

46

86

166

2.0 

2.5 

3.0 

3.5

361

575

860

1,260

-0.06

0.0

.2

.4

1.8

3.0

8.5

18

0.6

.8

1.0

1.4

31

51

80

166

Note. Same as preceding table 

above 1.4 ft.

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1

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

Ttotal

Mean

Cfsm

In.

Oct.

34

*33

29

29

70

48

~95 102

62

45

37

33

31

30

28

26

24

22

21

21

21

21

58

76

48

36

33

31

28

25

25

1,222

39.4

0.749

0.86

Nov.

75

236

168

97

73

60

52

48

55

45

37

41

56

46

*40

35

33

42

37

33

48

437

184

107

85

85

80

71

64

55

2,525

84.2

1.60

1.79

Dec.

55

47

47

47

46

44

75

115

115

85

75

206

231

ISO

131

223

222

*162

116

115

99

111

135

148

222

152

120

113

100

68

74

3,679

119

2.26

2.60

Jan.

80

62

68

88

74

58

58

62

60

58

52

56

48

a41

a41

a42

a43

a41

a40

a40

a38

a86

al.100

*317

182

140

115

105

96

90

86

3,467

112

2.13

2.45

Feb.

82

76

72

78

66

62

62

55

50

78

61

48

56

50

46

43

44

4O

36

li

40

38

37

38

38

121

520

*232

-

2,203

78.7

1.50

1.56

Mar.

154

120

91

71

66

62

62

62

66

64

56

60

76

146

174

399

2f60~

171

141

120

116

127

130

132

116

106

100

*98

94

91

80

3,611

116

2.21

2.55

Apr.

74

140

144

102

155

440

33T

231

190

171

185

225

228

171

136

123

123

120

112

106

100

87

78

72

64

64

61

58

52

48

4,197

140

2.66

2.97

May

43

40

38

37

36

35

*3l

29

26

24

110

225

127

92

154

89

61

54

49

151

236

116

87

160

87

67

70

66

54

43

36

2,473

79.8

1.52

1.75

June

32

35

44

33

28

24

34

36

25

21

19

18

*16

15

14

20

16

14

11

25

16

11

9.7

9.7

8.5

14

30

16

15

19

628.9

21.0

0.399

0.44

July

24

16

14

10

9.7

9.7

9.3

8.2

7.9

7.3

6.7

6.7

6.7

6.7

6.4

5.0

4.4

4.0

*3.4

3.2

3.0

a4.6

6.1

5.2

4.4

4.0

4.4

7.3

11

20

15

254.3

8.20

0.156

0.18

Aug.

 .3 10

5.8

5.5

6.1

8.5

6.4

5.2

4.2

3.7

4.2

4.7

4.2

3.4

3.4

4.2

2.6

2.4

2.2

2.0

1.8

3.4

5.8

3.7

3.2

5.2

7.0

5.8

4.4

4.2

4.0

144.5

4.66

0.089

0.10

Sept.

3.4

3.4

5.0

4.4

6.4

5.0

3.7

3.4

3.2

3.0

3.0

3.0

3.2

5.6

12

8.9

9.7

11

7.6

5.5

4.2

4.2

7.9

6.7

5.5

5.0

4.0

3.4

3.0

2-8

157.1

5.24

0.100

0.11

Calendar year 1956: Max 1,220 Min 1.9 Mean 1O2 Cfsm 1.94 In. 26.33

Water year- 1956-57: Max 1,1OO Min 1.8 Mean 67.3 Cfsm 1.28 In. 17.36

Peak discharge (base, 1,65O cfs).--Jan. 23 (12 m. to 12:3O p.m.) 1,85O cfs (4.O7 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 West Branch Westfield River.

Note.--Stage-discharge relation affected by ice Nov. 20, Nov. 3O to Dec. 7, Dec. 10, 11, 2O, 

Dec. 3O to Jan. 23, Jan. 26 to Feb. 23, Mar. 4-9, 11. Backwater from leaves Nov. 3-22, Sept. 26-30. 

Discharge for Oct. 2-4, 13-22, 29-31, May 9, 10, June 6, 9-26, June 28 to July 21, July 23 to 

Sept. 3O computed from once-daily chain-gage readings.
CONNECTICUT RIVER BASIN 211

West Branch Westfield River at Huntington, Mass.

Location. Lat 42°14'14", long 72°53'46", on left bank at Huntington, Hampshire County, 

0.4 mile downstream from Roaring Brook and 1-| miles upstream from mouth.

Drainage area. 93.7 sq ml.

Records available. September 1935 to September 1957.

Gage. Water-stage recorder. Datum of gage is 388.60 ft above mean sea level, datum of 

1929.

Average discharge. 22 years, 191 cfs.

Extremes. Maximum discharge during year, 2,940 cfs Jan. 23 (gage height, 5.09 ft); maximum gage height, 5.33 ft Jan. 23 (backwater from ice); minimum discharge, 4.f cfs 

Aug. 19-21.

1935-57: 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. Some diurnal fluctuation at low flow caused by mill above station.

Rating table, water year 1956-57, except periods of ice effect (gage 

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

0.39 

.4 

.6 

.8

1.1

1.4

4.6

4.9

12

22

47

85

1.7 

2.0 

2.5 

3.0 

4.0 

5.0

155

270

560

950

1,780

2,830

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

44

*45

38

51

100

66

117

121

81

61

52

47

44

42

39

37 

34

32

30

2.7

27

27

120

139

76

56

50

46

41 

38

36

1,764

56.9

0.607

0.70

Nov.

112

298

242

141

104

84

74

70

80

68

55

59

86

76

*65

58 

56

68

68

62

99

667 352"

174

127

135

127

111

100 

91

3,859

129

1.38

1.53

Dec.

95

80

79

80

79

76

12?

165

195

152

127

376

382

310

235

*295 m

195

199

178

200

275

274

400

280

215

207

185 

125

135

6,537

211

2.25

2.59

Jan.

150

HO

120

160

141

104

106

111

109

106

96

100

91

76

76

78 

79

75

73

72

70

140

1.900

*595

360

280

235

205

180 

170

160

6,328

204

2.18

2.51

Feb.

155

141

135

147

125

115

116

105

94

140

127

89

104

93

85

80 

82

78

78

Si

70

70

70

70

74

191

752

*377

-

3,824

137

1.46

1.52

Mar.

257

203

165

130

120

118

116

118

127

120

104

113

137

248

305

654 

433

310

257

222

215

239

239

235

203

188

181

*175

168 

158

141

6,399

206

2.20

2.54

Apr.

133

256

266

192

278

399

609

448

376

330

360

442

448

340

275

248 

248

235

218

199

188

165

149

141

127

127

12 O

113

106

li

7,630

254

2.71

3.03

May

85

8O

76

74

73

69

*64

60

54

55

179

335

216

149

261

155 

113

1OO

96

253

374

203

168

358

199

141

130

116

100 

84

72

4,490

145

1.55

1.78

June

64

69

98

70

58

50

69

79

55

45

39

35

*32

29

26

25 

22

20

18

38

35

22

18

16

15

21

51

30

25 

26

1,200

40.0

0.427

0.48

July

29

24

17

15

15

15

14

12

11

13

11

10

9.8

10

10

9.4 

8.4

7.6

7.0

7.0

6.7

8.1

17

13

1O

8.7

9.9

11

12

22 

*22

395.6

12.8

0.137

0.16

Au;>;.

20

IT

10

9.O

9.8

11

9.8

8.O

7.3

6.7

7.0

8.0

8.7

7.O

6.4

6.7 

6.1

5.2

4.9

1*6

4.6

6.4

9.8

8.0

6.7

9.0

12

10

*3.4

8.7 

8*4

26^.2

8,46

0.090

0.10'

Sept.

8.0

8.0

18

16

14

13

10

9.0

8.7

8.0

22

22

21

20

18

15 

16

13

11

9.0

8.0

7.6

7.6

14

12

9.0

8.0

7.3

6.7

*6,4

366.3

12.2

0.130

0.15

Calendar year 1956: Max 2,390 Min 6.7 Mean 179 Cfsm 1.91 In. 26.05

Water year 1956-57 : Max 1,900 Min 4.6 Mean 118 Cfsm 1.26 In. 17.09

Peak discharge (base, 2,700 cfs). Jan. 23 (12:30 p.m.) 2,94O cfs (5.09 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 30 to Jan. 4, Jan. 15-23, 25, Jan. 28 to 

Feb. 1, Feb. 5, 6, 8, 10, 20, 21, Mar. 4, 5.
312 CONNECTICUT RIVER BASIN

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

Location. Lat 42°07'34", long 72°53'37", at Cobble Mountain Dam, 1\ miles west of Westfield, Hampden County.

Drainage area. 45.8 sq mi.

Records available.--July 1905 to September 1957. Published as "near Blandford" 1905-11 

and as "near Westfield" 1912-35.

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. 47 years (1910-57), 91.1 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. Plow regulated by Borden Brook Reservoir since 

1910 and Cobble Mountain Reservoir since August 1931 (see p. 233); 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 1956 to September 1957

Month

October. .......................................................

Calendar year 1956...........................................

May. ...........................................................

September. .....................................................

Water year 1956-57. ..........................................

Mean

15.6

87.3

83.2

-1.54

.653

46.5

Per square

mile

1.91

1.82

.014

1.02

Runoff In 

Inches

0.39

.98

2.20

24.74

1.47

1.04

-.04

.02

13.78

Note. Negative figures Indicate that evaporation and seepage from reservoirs exceeded Inflow.
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 Westfleld, Hampden County. 

Drainage area.--497 sq ml.

Records available. June 1914 to September 1957. 

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.--43 years, 953 cfs (adjusted for diversion and, since October 1931, for

storage}. 

Extremes. Maximum discharge during year, 6,140 cfs Jan. 23 (gage height, 9.8 ft, from

high-water mark); minimum, 69 cfs July 21, 22, Aug. 19; minimum daily, 70 cfs Aug. 19. 

1914-57: Maximum discharge, 70,300 cfs Aug. 19, 1955 (gage height, 34.2 f';, from

floodmarks), from rating curve extended above 18,000 cfs on basis of computations of

flow over dam at gage heights 27.20, 29.40, and 34.2 ft; minimum, 9 cfs Oct. 2, 1921. 

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 diversion

from Westfield Little River for municipal supply of Springfield and by Borden Brook

Reservoir, Cobble Mountain Reservoir since 1931, and Khightville Reservoir since 1941

(see p. 233).

Revisions (water years).--WSP 601: 1924(M). WSP 756: Drainage area. WSP 1051: 1919- 

2TTM), M), 1925(M).WSP 1231: 1915-16(M), 1920.

Rating tables, water year 1956-57, except periods of Ice effect (gage 

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

Oct. 1 to Apr. 6 Apr. 7 to Sept. 3O

3.3 

3.5 

4.0 

5.0 

7.0 

9.0

191

254

445

1,000

2,660

4,990

2.67

2.7

3.1

3.5

4.0

70

73

133

233

420

4.5 

5.0 

6.0 

8.0

645

945

1,690

3,720

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

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.

312

284

*261

420

454

432

397

816

454

376

337

298

264

250

277

248

232

244

210

216

202

211 

276

590

406

330

301

244

274

228

235

10,079

325

+6.01

Nov.

354

960

1,170

680

548

436

392

372

409

400

322

345

388

427

384

*352

326

386

472

392

432

2.140 

1,550

864

570

640

575

515

520

468

17,789

593

+44.9

Dec.

422

412

470

466

436

414

440

626

826

838

598

,040

,430

,520

,230

,240

.750

,360

*886

838

820

868 

1,010

992

1,510

1,400

1,000

928

868

560

550

27,748

895

+89.8

Jan.

600

640

600

630

620

475

540

540

560

520

475

425

400

530

540

500

450

440

400

575

475

700 

4.500

*2,500

1,500

2,180

1,630

952

898

808

678

27,081

874

+47.2

Feb.

606

662

578

618

596

645

585

495

570

670

680

562

510

520

481

458

430

470

458

454

383

436 

388" 377

469

768

2.650

2,420

-

_ ____ _

18,919

676

+55.8

Mar.

*1,720

1,110

902

724

672

685

720

774

814

742

641

663

630

919

1,340

2,250

2.510

,640

,270

,110

,050

,170 

,080

,090

,020

982

928

937

860

787

754

32,294

1,042

+62.1

Apr.

756

970

1,480

*1,020

1,360

2,880

5.190

2,110

1,840

1,550

1,630

1,700

1,910

1,470

1,200

1,090

1,030

1,040

978

906

868

838 

730

718

786

788

592

564

590

 496

37,080

1,236

+107

May

505

*449

437

462

515

446

440

438

381

420

531

1,280

1,160

790

971

82O

568

462

437

843

1.940

1,090 

820

926

718

536

651

536

496

360

363

20,589

664

-11.1

June

340

291

424

360

306

246

277

377

284

288

322

246

322

309

221

176

319

*378

361

249

313

181 

160

151

151

152

254

240

206

184

8,068

269

-37.4

July

176

176

141

131

185

149

129

131

159

164

172

124

124

104

110

103

96

92

77

81

71

102 

106

99

96

93

98

89

*110

131

151

3,768

122

-6.27

Aug.

159

12O

105

104

84

96

*92

96

98

98

89

79

95

93

89

83

78

74

70

78

78

93 

86

81

83

85

86

88

89

96

102

2,827

91.2

-8.62

Sept.

150

74

92

104

99

111

112

95

75

89

91

81

84

79

103

151

188

119

119

104

104

96 

83

92

115

107

98

91

86

78

3,070

102

-2.62

Adjusted for diversion and change in reservoir contents

Mean 

Cfsm 

In.

331 

0.666 

0.77

638 

1.28 

1.43

Calendar year 1956: 

Water year 1956-57:

985 

1.98 

2.28

921 

1.85 

2.14

731 

1.47 

1.53

1,1O4 

2.22 

2.56

1,343 

2.70 

3.01

653 

1.31 

1.51

Observed

Max 6,340 Mln 87 Mean 918 

Max 4,500 Mln 70 Mean 573

232

0.467 

0.52

115 

0.231 

0.27

8?. 6 

0.1S6 

0.19

99.7 

0.201 

0.22

Adjusted

Mean 967 Cfsm 1.95 In. 

Mean 602 Cfsm 1.21 In.

26.48 

16.43

* Discharge measurement made on this day.

t Diversion from Westfield Little River and change In contents in Knightvllle, Borden B-ook, and 

Cobble Mountain Reservoirs, equivalent In cubic feet per second.
214 CONNECTICUT RIVER BASIN

Connecticut River at Thompsonville, Conn.

Location. Lat 41 0 59'14", long 72°36'21", on right bank Just upstream from Enfield Dam, 

1 mile downstream from Thompsonville, Hartford County.

Drainage area. 9,661 sq mi.

Records available. July 1928 to September 1957.

Gage. Water-stage recorder on river and on canal of Connecticut Light and Power Co. 

Datum of gage is 38.48 ft above mean sea level, datum of 1929.

Average discharge.--29 years, 16,470 cfs (adjusted for storage and diversion).

Extremes. Maximum discharge during year, 47,100 cfs Jan. 25 (gage height,-4.07 ft); minimum daily, 1,220 cfs Sept. 2.

1928-57: 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, 195?.

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

which are fair. Discharge includes water diverted around station tv canal of Connecticut Light & Power Co. Plow regulated by powerplants, by diversior from Chicopee River 

basin, and by First Connecticut and Second Connecticut Lakes, Lake Francis, Comerford 

Station Pond and Moore Reservoir, Quabbin Reservoir (see p. 233), and other reservoirs 

(combined usable capacity, about 93i billion cubic feet).

Revisions (water years). WSP 741: 1932: WSP 891: Drainage area.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

(t)

Oct.

4,470

7,380 

8,070

*8,040 

8,780

8,050

5,720

9,960

13,800

14.300

13,400

10,800

6,920 

3,200

4,880

9,180

9,600

10,000

9,020

6,300

3,410

3,680

7,390 

8,930 

7,510

7,590

5,580

2,680

2,980

5,080 

5,410

232,110

7,487

-1,069

Hov.

6,880

8,910 

13,400

7,880 

4,88O

6,840

7,400

8,480

8,290

6,770

3,090

2.860

5,570 

7,620

7,970

*8,020

7,440

5,920

7,220

10,200

10,200

15,000

25,400 

24,000 

21,700

17,200

13,900

13,100

13,900

12 500

312,540

10,420

+56.4

Dee.

9,830

7,700 

6.660

10,000 

9,510

9,710

10,900

12,300

14,800

17,400

15,400

17,400

21,100 

22.100

21,800

19,600

18,300

21,100

20,800

18,100

15,700

16,300

16,000 

14,600 

17,100

15,600

16,300

15, 500

b 12, 900

b9,450 

b9,350

463,310

14,950

+375

Jan.

9,210

7,720 

10,400

11,200 

b9,260

b8,670

7,280

9,960

11,200

10,500

9,850

8,810

6.020 

6,600

8,400

8,920

7,710

7,560

7,630

6,200

6,630

9,640

18,100 

37,000 

41.100

29,200

23,300

21,200

19,800

17,300 

16,900

413,270

13,330

-400

Feb.

15,800

14,200 

12,500

11,700 

12,200

13,300

12,300

11, 900

11,600

11, 500

10,800

10,600

11,800 

11,800

10, 800

11,000

9,200

8,290

10,500

10,400

10,300

10,300

8,770 

8,040 

7. 950

11,100

16,900

28.700

-. .

334,230

11,940

-1,501

Mar.

29,80O

24,700 

22,400

19,600 

17,200

16,600

16,600

16,600

16,600

16,800

12.000

14,900

15, 800 

14,900

18,400

23,800

55.900

31,600

26,200

25,100

23,900

23,800

22,600 

22,400 

22,500

22,200

21,800

21,200

21,100

20,400

19,700

655,100

21,130

-1,318

Apr.

16,800

16.200 

22,900

28,OOO 

25,900

32,800

40.700

35,800

31,100

28,700

26,800

*27,100

26,300 

24,900

23,300

22,100

21,100

20,100

20,100

20,100

22,500

24,900

28,700 

30,100 

26,900

24,500

20,800

18,900

18,800

17,800

744,700

24,820

+3,317

May

16,000

13,600 

12,900

13,000 

8,710

7.720

10, 000

*10,800

9,490

10, 300

10,200

8,840

11,400 

11,600

13, 100

15, 100

16,900

17,800

15,000

11,500

19,200

52.000

24,500 

21,200 

19,500

17,400

10, 600

13,200

15, 600

13,500

10,900

441,560

14,240

+1,707

June

10,100

8,010 

9,780

11,200 

9,480

8,870

9,490

10,200

4,720

4,710

7,950

8,310

7,060 

6,970

6,060

2,280

3,430

*5,330

5,750

4,650

4,470

4,030

1,680 

3,190 

4,590

5,570

10,200

15.600

10,900

8,670

211,250

7,042

+288

July

9,290

8,180 

5,990

6,090 

8,550

10, 300

13,100

15.700

13,700

9,280

7,420

7,100

6,960 

3,340

4,050

5,730

5,140

4,450

4,360

4,290

2,890

3,500

7,410 

9,410 

9,320

7,960

6,120

*2.560

3,540

5,700

7,710

217,140

7,005

+192

Aug.

8.320

7,370 

4,430

31720

5,790

5,500

4,870

5,080

4,830

2,260

3,600

5,520 

5,850

5,860

6,230

4,460

1,840

2,880

5,050

5,680

5,400

4,630 

3,410 

al,510

a2,870

a4,010

a4,590

a3,600

3,670

2,850

137,150

4,424

-928

Sept.

al,340

al.220 

2,980

5,410 

4,910

4,530

2,490

1,700

2,270

3,210

3,840

4,520

4,590 

2,930

1,480

2,870

*4,920

4,530

4,290

4,230

2,800

al,310

4,070 

7,' 630

7,230

5,500

2,700

al,290

2,660

111,160

' 3,705

-713

Adjusted for change In contents and diversion

Mean 

Cfsm 

In.

6,418 

0.664 

0.77

10,470 

1.08 

1.21

Calendar year 1956: 

Water year 1956-57:

15,320 

1.59 

1.83

12,930 

1.34 

1.54

10,440 

1.08 

1.12

19,810 

2.05 

2.36

28,140 

2.91 

3.25

15,950 

1.65 

1.90

Observed

lax 108,000 Kin 1,220 Mean 16,700 

Max 41,100 Mln 1,220 Mean 11,710

7,330 

0.759 

0.85

7,196 

0.745 

0.86

3,496 

0.362 

0.42

Adjusted

2,992 

0.310 

0.35

Mean 17,030 Cfsm 1.76 In. 23.99 

Mean 11,710 Cfsm 1.21 In. 16.46

* 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 Borden Brook and Cobble Mountain Reservoirs, listed on p. 233 

and diversion from Chicopee River basin.

a No gage-height record; discharge estimated on basis of recorded range In stage when available, 

weekly regulation pattern, and records for Connecticut River at Montague City, Mass., Westfleld 

River near Westfleld, Mass., and Chicopee River at Indian Orchard, Mass.

b Stage-discharge relation affected by Ice.
CONNECTICUT RIVER BASIN 215

Scantlc River at Broad Brook, Conn.

Location. Lat 41°54'42", long 72 C 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. ml.

Records available. August 1928 to September 1957.

Gage . Water-stage recorder. Datum of gage Is 26.23 ft above mean sea level, datum of ~

Average discharge. 29 years, 142 cfs.

Extremes . Maximum discharge during year 642 cfs Apr. 7 (gage height, 5.61 ft); minimum,

 18 cfs July 24-28, Sept. 9-16, 27-29 (gage height, 0.48 ft); minimum dally, 18 cfs 

July 24-28, Sept. 10-15, 27-29.

1928-57: 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 of 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 chemical analyses, water temperatures, and suspended sediment loads for the 

water year 1957 are given in WSP 1520.

Revisions (water years). WSP 726: 1931. WSP 781: Drainage area. WSP 851: 1936(M).

 WSP 921: 1940. 5T3T 1201: 1929(M), 1934(M), 1938-39, 1948-49.

Rating tables, water year 1956-57 (gage height, In feet, and 

discharge, In cubic feet per second)

Oct. 1 to Jan. 24

0.8 34

1.5 105

2.5 ZOO

3.5 320

4.0 370

Jan. 24 to Sept. 3O

0.4

.7

1.0

2.0

12

37

67

177

3.0 332

4.0 447

5.4 613

Discharge, In cubic feet per second, water year October 1956 to September 195T

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

50

49

48

56

58

71

79

65

56

50

49

50

54

49

47

47

41

45

44

44

45

50

49

48

46

45

45

46 

46

45

1,574

50.8

0.516

0.59

Nov.

*70

86

84

71

62

57

55

54

62

62

56

55

56

56

54

52

50

80

111

98

80

135

144.

129

91

81

86

83

71 

62

2,293

76.4

0.776

0.87

Dec.

57

53

BT

57

57

56

*54

54

82

111

99

149

164

164

194

210

212

T58

146

114

110

114

146

164

194

172

146

122

118 

114

100

3,775

122

1.24

1.43

Jan.

106

99

87

85

85

79

79

80

80

82

68

79

81

72

68

70

70

59" 68

68

74

101

366

490

45?

265

174

141

136 

125

118

4,017

130

1.32

1.52

Feb.

*118

116

107

120

130

124

119

120

131

252

227

165

126

117

111

105

103

101

100

101

93

90

89

54

96

108

235

235

-

3,633

130

1.32

1.38

Mar.

204

153

144

132

118

111

TTT

126

227

261

219

174

153

144

141

227

244

219

168

152

168

212

204

177

150

136

129

*123

120 

117

113

5,077

164

1.67

1.92

Apr.

1O8

*155

*235

212

282

*524

613

*491

502

469

*414

345

303

261

227

197

177

169

169

157

150

140

130

126

121

120

126

120

*1O9 

100

7,252

242

2.46

2.74

May

97

95

89

89

88

88

84

80

77

74

79

98

99

92

97

102

80

78

76

*87

118

TTT

91

85

75

68

69

77

77 

67

63

2,650

85.5

0.869

1.00

June

60m

67

64

59

57

55

51

50

50

48

45

47

44

41

40

37

35

35

35

34

32

32

30

31

30

31

*31

33

32

1,295

43.2

0.439

0.49

July

3136"

*29

29

29

28

26

27

28

31

28

27

26

26

25

23

22

22

21

20

19

19

19

18

18

18

18

18

26 

250-*

co

749

24.2

0.246

0.28

Aug.

*23

22

22

23

25

23

22

22

22

22

22

22

20

1919"

20

19

20

19

19

21

23

21

20

22

24

22

21

21 

22

22

664

21.4

0.217

0.25

Sept.

22

22

*22

22

22

22

21

20

19

18

18

18

18

18

18

20

26

12

23

19

19

19

20

20

19

19

18

18

18 

20

600

20.0

0.203

0.23

Calendar year 1956 1 Max 1,030 Mln 27 Mean 144 Cfsm 1.46 In. 19.91

Water year 1956-57 : Max 613 Mln 18 Mean 92.0 Cfsm 0.935 In. 12. 7O

Peak discharge (base, 550 cfs).--Jan. 24 (8 p.m.) 560 cfs (5.00 ft); Apr. 7 (l to 3 p.m.) 642 cfs 

(5.61 ft) .

* Discharge measurement made on this .day.
216 CONNECTICUT RIVER BASIN

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 1957. Prior to October 1948, published as 

Karmington River near New Boston.

Gage.--Water-stage recorder. Datum of gage is 758.21 ft above mean sea level, datum of

Average discharge. 44 years, 183 cfs (adjusted for storage).

Extremes.--Maximum discharge during year, 1,510 cfs Jan. 23 (gage height, 5.90 ft); maximum gage height, 9.27 ft Jan. 23 (ice Jam); minimum daily discharge, 2.4 cfs Aug. 20,21. 

1913-57: 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 of peak 

flow; minimum daily, that of Aug. 20, 21, 1957.

Remarks. Records good except those below 4 cfs and those for periods of ice effect which 

are fair. Plow regulated by Otis Reservoir (see p. 233).

Revi.sl.ons...i wat?Lyearsj. WSP 641: 1924(M). WSP 756: Drainage area. WSP 781: 1928(M). 

WSF 1231:1914.

Rating tables, water year 1956-57, except periods of Ice effect (gage 

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

2.3 

2.5 

2.8 

3.1 

3.5

Oct. 1 to Jan. 23

18

32

64

112

203

4.0 

4.5

360

570

840

1,180

Jan. 24 to Sept. 30

1.9

2.0

2.1

2.0 

4.5 

8.3

2.3 

2.5

Note. Same as preceding 

table above 2.5 ft.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

36

29

26

26

49

38

83

*75

59

43

36

32

31

29

28

26

24

22

22

21

20 21

116

136

83

59

47

41

37

33

32

1,360

43.9

+3.1

Nov.

132

174

192

116

83

64

54

49

55

46

39

48

58

52

*49

45

42

73

71

60

93

471

^76

170

136

116

112

98

84

73

3,131

104

+ 11.0

Dec.

68

68

68

67

64

67

92

107

167

125

120

358

318

253

206

304

314

*236

155

160

142

153

214

218

322

210

172

157

144

105

115

5,269

170

+ 20.7

Jan.

120

90

100

130

115

90

86

90

90

86

80

82

74

60

62

64

65

62

60

60

57 ilo

*1 J QQQ

580

332

220

173

151

146

140

135

4,740

153

+ 41.9

Feb.

130

120

110

120

105

96

95

90

105

130

105

84

93

84

76

84

76

68

61

58

*65

63

62

60

62

110

450

308

-

3,070

110

+36.3

Mar.

219

173

130

105

100

96

95

94

105

98

90

91

112

171

206

450

352

244

198

166

162

166

178

169

155

144

137

*133

129

122

110

4,890

158

+ 19.0

Apr.

105

247

247

190

248

559

SIT

407

325

268

281

350

374

284

227

200

198

198

196

178

166

148

135

127

112

125

116

103

101

86

6,812

227

+46.6

May

78

*70

65

63

62

59

54

53

48

46

126

148

137

112

142

108

86

7*

67

156

233

T53

112

99

88

72

64

59

48

41

45

2,767

89.3

+ 13.1

June

37

48

80

53

41

36

50

50

36

30

29

*25

22

19

17

17

17

14

12

9,3

11

8.8

7.8

7.4

7.0

10

17

21

21

19

772.3

25.7

0

July

21

17

12

11

11

9.8

8.8

7.4

7.0

7.8

7,4

9.3

10

10

8.8

7.0

6.2

5.1

8.4

4.5

4.2

T7i

9.4

12

9.3

7.4

7.4

6.2

20

23 22

314.6

10.1

-2.7

Aug.

15

9.8

8.0

7.0

9.8

7.0

5.1

4.2

3.6

4.2

6.6

6.6

5.8

5.1

4.5

3.9,

3.1

3,3

?.6

l^i

2.4

3.3

4.5

3.6

3.3

8.8

7.8

*5.8

4.8

5 8

7 '.4

176.1

5.68

-3.9

Sept.

6.2

4.8

4.8

4.7

4.2

3.3

3.3

3.6

3.3

3.1

3.3

3.6

2.8

27S

2.8

5.5

17

13

6.2

4.8

5.1

86

98

20

99

92

11

3.9

81

84

683.1

22.8

-23.7

Adjusted for change In contents In Otls Reservoir*.

Mean 

Cfsm 

In.

47.0 

0.511 

0.59

115 

1.25 

1.40

Calendar year 1956 : 

Water year 1956-57 :

191 

2.08 

2.39

195 

2.12 

2.44

146 

1.59 

1.65

177 

1.92

2.21

274 

2.98 

3.32

102 

1.11 

1.28

Observed

Max 2,110 Mln 4.6 Mean 190 

Max 1,000 Mln 2.4 Mean 93.1

25.7 

0.279 

0.31

7.46 

0.081 

0.09

1.81 

0.020 

0.02

-0.930 

-0.010 

-0.01

Adjusted

Mean 173 c°sm 1.88 In. 25.57 

Mean 106 C'sm 1.15 In. 15.69

Peak discharge (base, 1,4OO cfs). --Jan. 23 (11 a.m.) 1,510 cfs (5.90 ft).

* Discharge measurement made on this day.

t Change in contents, equivalent In cubic feet per second, In Otls Reservoir.

Negative figures Indicate that evaporation and seepage from reservoir exceeded Inflow, 

te . Stage-discharge relation affected by Ice Nov. 11, 20, 30, Dec. 1, 10, 11, 19, 20, 26, 

0 -

Note . 

Dec. 30 to Jan. 23, Jan. 30 to Feb. 27, Mar. 3-7, 11.
CONNECTICUT RIVER BASIN 

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

217

Location. Lat 41 6 57'46", long 73°01'05", on right bank at downstream side of bridge on 

State Highway 20 at Rlverton, Lltchfleld 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 ml.

Records available. August 1955 to September 1957.

Gage.--Water-stage recorder. Prior to Mar. 29, 1957, wire-weight gage read twlc9 daily. 

Datum of gage Is 485.60 ft above mean sea level, datum of 1929.

Extremes.--1955-56: Maximum discharge observed during water year, 10,600 cfs Oct. 16 

(gage height, 12.47ft); minimum observed, 9.8 cfs Aug. 18.

1956-57: Maximum discharge during water year, 2,110 cfs Jan. 23 (gage height, 

7.2 ft, from graph based on gage readings); minimum, 2.9 cfs Sept. 16 (gage height, 

2 43 ft)

1955-57: Maximum discharge observed, 10,600 cfs Oct. 16, 1955 (gage height, 12.47 

ft); minimum discharge, that of Sept. 16, 1957.

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).

Revisions.--Minimum discharge for the water year 1956 has been revised to 9.8 cfs 

Aug. 18 (gage height, 2.48 ft, affected by backwater from unknown causes), superseding 

figure published in WSP 1431.

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

regulated by Otis Reservoir (see p. 233).

Revisions. Revised figures of discharge for the water year 1956, superseding those 

published in WSP 1431, are given herewith.

Discharge, In cubic feet per second, water year October 1955 to Septe»a>er 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.

155 

127

105 *100

87.

g200 

760

735

710

g570

124

200

177

200

*g4,550

H7.310

g3 290

g2io60

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

g5.550

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 

167

23,825

794 -8.7

Dec.

143 

135

167 

244

541

294 

b!80

b!50

b!30

bl!5

b!05

blOO

b98

97

106

66

79

77

b70

b60

b55 bSS"

b55

b65

b85

b7S

b6S

b60

b5S 

b5S

b55j

3,457

112

+18.2

Jan.

b52 

b60

b65 

b70

*b!50

b!40 

b!35

b!30

bg750

gl,060

740

890

a700

a500

a350

*287

262

211

180

b!90

b!80

b!70

b!60

152

165

156

156

b!75

b!95 

b210

b215

8,856

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

169

160

blTO

b!70

b!65

g260

Si§5

348

275

244

6,099

210

-86.5

Mar.

227 

233

236 

250

256

294 

465

411

307

272

253

310

268

262

244

b210

b215

b220

b210

b215

187

b210

b205

b210

b205

204

196

183

174

gOg

199

7,537

243

-62.2

Apr.

192 

g22T

300 

*g390

g820

950 

gl.010

765

665

g690

765

840

g890

gl.OOO

gl,070

g2,120

2,100

1,520

1,300

1,070

815

765

950

980

865

890

865

gl,250

g2,600

g5.140

31,804

1,060

+16.8

May

m1,160 

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

281

17,210

555

-31.3

June

390 

397

m411

341 

300

265

217

233

253

*185

148

120

99

80

65

54

42

38

35

38

32

30

29

24

23

27

22

20.

5,318

177

-42.2

July

19 

18

16 

17

g28

 Ml

56

83

51

30

26

g32

g!78

122

75

61

44

30

22

29

59

42

32

25

*22

19

19

17

17

17

1,483

47.8

-2.2

Aup.

16 

16

16 

15

14

14 

14

14

14

14

25

17

17

19

16

IS

11

10

2.2

15

14

14

14

12

11

11

10

11

12

21

22

453

14.6

+3.5

Sept.

24 

37

54 

29

22

22 

44

34

29

22

21

20

1919-

19

21

51

70

42

32

44

40

30

116-

69

42

40

43

70

1,242

41.4

+3.2

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

1,117 

8.59 

9.90

785 

6.04 

6.74

Calendar year 1956: 

Water year 1956-57:

130 

1.00 

1.15

246 

1.89 

2.18

124 

0.954 

1.03

181 

1.39 

1.60

1,077 

8.28 

9.24

524 

4.03 

4.65

Observed

Kax - Kin - Mean - 

Wax 7,310 Kin 10 Mean 385

135 

1.04

1.16

45.6 

0.351 

0.40

18.1 

0.139 

0.16

44.6 

0.343 

0.38

Adjusted

Mean - Cfsm - In. - 

Mean 369 Cfsm 2.84 In. 38.59

Peak discharge (base, 1,800 cfs). Oct. 16 (8:25 a.m.) 10,600 cfs (12.47 ft); Oct. 31 (3 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 (8 p.m.) 3,000 cfs (8.0 ft); Apr. 30 (5 a.m.) 4,OOO cfs (8.9 ft).

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Otis Reservoir; furnished by The 

Collins Co.

a No gage-height record; discharge estimated on basis of records for station at New Boston, Mass.

b Stage-discharge relation affected by ice.

d Doubtful gage-height record; discharge computed from adjusted readings.

g Prom graph based on gage readings.

505692 O - 59 - 15
218 CONNECTICUT RIVER BASIN

West Branch Parmington River above Still River at River-ton, Conr. Continued

Rating tables, water year 1956-57, except periods of ice effect (gage 

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

Oct. 23 to Sept. 16

2.5 

2.7 

3.2

2.5 

2.7 

2.9 

3.5 143

4.0 

5.0 

6.4

252

620

1,460

Sept.

2.6 

2.8 

3.0 

3.3

16-30 

8.5

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

51

30

30

29

32

42

69

89

62

44

34

32

30

29

28

26

25

24

24

24

24

*24

72

Too" 151

73

60

60

51 

54

46

1,469

47.4

+3.1

Nov.

153

222

232

151

114

87

75

67

73

65

56

70

72

70

67

60

60

94

107

84

105

575 3TS177

105

147

137

120

105 

98

3,866

129

+11.0

Dec.

84

100

85

87

80

80

103

135

204

175

187

470

*40"3

340

279

350

430

308

183

179

179

179

308 

268

450

285

209

209

187 

132

134

6,802

219

+20. 7

Jan.

160

120

130

165

150

130

120

*128

120

110

105

105

95

80

82

84

85

82

80

80

75

95

1.400 

770

450

274

213

171

171

171

137

6,138

198

+41.9

Feb.

175

161

ISO

ISO

140

130

120

*115

125

160

130

110

120

105

100

105

95

85

80

75.

85

82

80 

80

80

163

745

410

-

4,156

148

+36.3

Mar.

282

230

167

92

85

98

113

122

153

135

101

*122

135

204

285

575

434

344

263

225

206

218

232 

227

220

191

185

179

173

167

155

6,318

204

+19.0

Apr.

143

306

342

257

350

*880

770

611

494

406

410

486

522

403

321

285

266

260

266

240

222

200

181 

169

157

169

163

145

135

120

9,679

323

+46.6

May

109

98

92

91

87

84

78

*75

7O

67

136

165

169

137

175

141

109

92

85

156

T35" 294

147 

126

109

92

84

80

67

59

54

3,526

114

+ 13.1

June

52

51

2i

70

54

51

51

67

50

42

38

37

35

31

27

25

25

23

20

18

16

16

15

14

14

18

27

32

28 

28

1,069

35.6

0

July

25

*25

19

16

16

14

14

14

15

16

15

14

16

16

16

14

13

12

11

13

10

TO

10 

15

15

13

11

12

16 

54

29

489

15.8

-2.7

Aug.

26

19

16

15

15

16

14

12

11

11

15

14

13

12

11

10

9.0

8.0

8.0

8.0

l^-

STF

*7.5 

8.0

8.5

15

16

13

11

11

11

380.0

12.3

-3.9

Sept.

11

11

10

9.0

9.5

9.0

7.5

7.5

8.0

6.5

8.0

7.5

8.0

6.5

8.0

13

30

23

14

*12

9.8

44

86 

42

64

85

39

12

52

80

732.8

24.4

-23.7

Adjusted for change in reservoir contents

Mean 

Cfsm 

In.

50.5 

0.388 

0.45

140 

1.08 

1.20

Calendar year 1956 : 

Water year 1956-57 :

240 

1.85 

2.13

240 

1.85 

2.13

184 

1.42 

1.48

223 

1.72 

1.98

370 

2.85 

3.18

127 

0.977 

1.13

Observed

Max 3,140 Mln 10 Mean 252 

Max 1,400 Mln 6.5 Mean 122

35.6 

0.274 

0.31

13.1 

0.101 

0.12

8.36 

0.064 

0.07

0.727 

0.0056 

0.006

Adjusted

Mean 235 Cfsm 1.81 In. 24.58 

Mean 135 Cfsm 1.04 In. 14.19

Peak discharge (base, 1,800 gfs). Jan. 25 (10 a.m.) 2,110 efs (7.2 ft).__________________

* Discharge measurement made on this day.

t Change in contents, equivalent In cubic feet per second, In Otls Reservoir; furnished by The 

Collins Co.

Note. Stage-discharge relation affected by Ice Jan. 1-23, 25, Feb. 3-23.
CONNECTICUT RIVER BASIN 219

Mad River at Winsted, Conn.

Location. Lat 41°55'51", long 73°04'56", on left bank at Winsted, Litchfield County, by 

U. S. Highway 44, 0.2 mile upstream from Indian Meadow Brook, 0.2 mile downstream from 

Winsted city line, and 1.8 miles upstream from mouth.

Drainage area. 18.4 sqmi.

Records available.--October 1956 to September 1957.

Gage. Water-stage recorder. Datum of gage is 764.18 ft above mean sea level, datum of 

1929.

Extremes. Maximum discharge during year, 335 cfs Jan. 23 (gage height, 3.60 ft); maximum 

gage height, 3.76 ft Jan. 23 (ice Jam); minimum discharge, 0.3 cfs July 24-23, Sept. 15, 

16 (gage height, 0.46 ft).

Flood of Aug. 19, 1955, reached a stage of 11.8 ft, from floodmarks (discharge, 

10,200 cfs, by slope-area measurement, half a mile upstream).

Remarks. Records excellent except those for periods of ice effect or no gage-height record, which are good. Flow regulated by storage and diversion for municipal water supply of city of Winsted.

Hating table, water year 1956-57, except periods of Ice effect (gage

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

(Shifting-control method used Oct. 27-31)

0.46 

.5 

.6

0.3 

.5

1.35 

4.1 

7.6

1.2 

1.5 

1.9 

2.5 

3.0

13

23

49

115

200

Discharge, In cubic feet per second, water year October 1956 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

Oct.

a2.5

a2.2

a2.0

a2.1

a3.5

a2.3

a3.5

a4.5

a3.0

a2.2

al.9

al.7

al.6

al.6

al.5

al.5

al.4

al.4

al.4

alii

al.3

al.3

a4.0

a6.5

a3.5

a2.3

1.85

*1.7

1.6

1.6

2.1

70.85

2.29

Nov.

10

6.8

23

10

6.4

4.8

4.0

3.8

4.3

3.5

2^9

3.0

5.0

4.1

3.5

3.4

3.4

*10

8.9

5.8

6.7

29

15

19

b!2

12

12

6.2

5.5

b4.6

268.6

8.95

Dec.

b4.6

b4.3

5.0

5.3

5.1

5.1

5.8

6.2

14

11

b8.7

50

*45

32

28

54

61

41

b29

23

21

26

55

47

6±

45

31

26

24

b20

b!6

813.1

26.2

Jan.

b!5

a!4

al3

b!2

b!2

bll

*10

10

9.8

b8.5

b7.2

7.4

7.0

6.8

6.0

6.2

6.2

5.8

5.5

5.5

5.6

blO

bl85

101

b76

b45

b33

a27

a27

a23

b21

732.3

23.6

Feb.

b22

b20

b20

24

b22

b21

*b!9

19

b24

£L

b41

b24

b20

b!9

18

b!7

big

b!6

bl6

b!5

b!4

b_13

14

15

18

35

121

61

-

730

26.1

Mar.

43

34

30

b24

b23

b20

*21

23

28

24

b22

24

30

47

50

90

64

47

40

38

36

30

15

14

12

11

11

11

10

0 '

6.9

890.7

28.7

Apr.

8.7

14

20

14

26

*79

92

112

93

78

79

88

85

70

58

50

47

45

69

54

47

39

34

32

29

37

34

29

24

21

1,507.7

50.3

May

ia

18

17

16

15

13

*6.6

5.8

5.3

5.0

7.6

9.1

12

11

15

8.0

6.0

5.5

5.8

17

18

9.3

8.0

6.4

5.0

4.4

5.1

6.8

4.8

4.0 

3.5

293.0

9,45

June

3.4

3.8

5.6

4.1

3.4

3.0

3.4

3.5

2.8

2.4

2.4

2.2

2.2

2.1

2.0

1.7

1.6

1.5

1.5

*1.25

1.25

1.05

.95

1.05

1.15

2.6

4.8

2.9

3.0

3.2

75.80

2.53

July

2.8

1.8

1.5

2.1

2.2

1.35

.95

.95

*.95

.85

.8

.7

.7

1.35

.95

.65

.5

.45

.4

.4

.35

.35

.4

^

.3

.3

.3

.4

i-1

3.0

2.2

33.75

1.09

Avs.

1.5

1.05

.65

.7

1.25

1.05

.8

.55

.55

1.0

.95

1.05

.8

.65

.55

.65

.5

.45

.4

.45

1.1

1.25

 1.15

.55

.5

2^

1.5

.95

.7

. 8 

.7

27.25

0.879

Sept.

0.55

.45

.5

.55

.65

.4

.35

.35

.35

.35

.4

.35

.4

.35

^3

2.0

&J,

2.4

1.35

.95

.8

.8

.95

.85

.7

.65

.5

.45

.45

.45

27.90

O.93O

Calendar year 1956: Max - Mln - Mean -

Water year 1956-57: Max 185 Mln 0.3 Mean 15.0

Peak discharge (base, 3OO cfs).--Jan. 23 (l:3o p.m.) 335 cfs (3.6O ft).

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records, engineer 

records for nearby streams.

b Stage-discharge relation affected by ice.

s' mtes, and
220 CONNECTICUT RIVER BASIN

Still River at Robertsville, Conn.

Location. Lat 41°58 I 04", long 73 0 02'03", on left bank 1,500 ft dovmst.-eam 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 1957.

Gage. Water-stage recorder. Datum of gage is 510.24 ft above mean sea level, datum of

Average discharge. 9 years, 190 cfs.

Extremes. Maximum discharge during year, 1,390 cfs Jan. 23 (gage height, 5.24 ft); maxi- 

 mum gage height, 5.56 ft Jan. 23 (ice Jam); minimum discharge, 0.2 cfs Sept. 14 (gage 

height, 0.96 ft); minimum daily, 0.3 cfs Sept. 14.

1948-57: 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 Sept. 14, 1957; minimum daily, that of Sept. 14, 

1957; minimum gage height, 0.29 ft Aug. 8, 1955.

Remarks.--Records good except those for periods of ice effect, which a"e poor, 

flow regulated by powerplant upstream.

Rating table, water year 1956-57, except periods of ice effect (gage

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

(Shifting-control method used Oct. 1 to Jan. 23)

Ordinary

0.9

1.0

1.1

1.2

1.4

1.6

0.05 

.35

17

1.8 

2.1 

2.5 

3.0 

4.0 

4.6

132

252

620

940

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

44

43

43

47

37

44

57

43

37

36

36

34

22

32

30

29

28

28

22

16

26

46

*63

47

39

33

27

32

33

33

1,131

36.5

0.432

0 50

Nov.

99

120

270

136

95

75

62

55

54

45

35

44

52

52

54

46

40

84

92

79

76

270

187

117

81

84

86

60

67

65

2,682

89.4

1.06

1.18

Dec.

50

44

54

58

il

52

67

63

110

116

99

262

231

184

161

251

290

229

160

144

134

136

233

222

286

229

169

158

117

101

50

4,501

145

1.72

1.98

Jan.

65

70

65

60

50

60

55

*50

47

44

37

45

40

37

32

35

35

33

32

27

35

50

900

480

307

205

178

176

146

131

124

3,651

118

1.40

1.61

Feb.

131

101

87

136

123

117

108

*107

89

179

190

140

126

109

100

80

74

90

86

*83

80

95

93

79

96

175

524

322

3,720

133

1.58

1.64

Mar.

224

181

150

141

130

126

*128

118

143

115

126

134

134

196

221

382 282"

232

303

186

193

208

172

163

154

137

128

121

117

92

85

5,220

168

1.99

2.29

Apr.

106

198

217

135

280

670

568

504

456

392

378

*402

382

308

282

246

250

216

258

211

184

170

157

147

158

155

155

122

157

101

7,933

264

3.13

3.49

May

102

95

84

78

70

87

71

63

*67

55

57

65

96

93

110

90

75

51

31

129

179

117

104

74

69

51

76

66

58

42

36

2,441

78.7

0.932

1.07

June

35

31

78

39

59

51

57

51

25

45

50

25

39

28

25

17

58

18

21

38

13

24

9.8

11

31

21

44

42

54

19

952.8

51.8

0.377

0.42

July

27

14

12

12

11

11

10

12

*21

22

25

20

12

12

11

9.8

9.4

9.4

9.4

9.0

8.1

7.7

7.4

7.1

7.1

6.8

6.5

6.2

aTT

16

16

574.0

12.1

0.143

0.16

Aug.

13

11

9.0

8.1

15

7.7

7.4

7.1

6.8

7.1

10

9.0

8.6

7.4

6.8

6.8

6.5

6.2

..

6.2

9.0

*7.4

6.8

6.5

26

17

20

9.0

7.7

8.1

289.0

9.32

0.110

0.15

Sept.

7.4

7.1

7.1

7.4

18

16

5.0

6.2

16

5.6

7.6

4.5

2.9

.3

.8

29

59

26

15

35

25

25

54

25

26

22

22

19

19

22

514.9

17.2

0.204

0.23

Calendar year 1956: Max 1,840 Min 4.3 Mean 153 Cfsm 1.81 In. 24.69

Water year 1956-57: Max 900 Mln 0.3 Mean 91.5 Cfsm 1.08 In. 14.70

Peak discharge (base, 1,300 cfs). Jan. 23 (1 p.m.) 1,390 cfs (5.24 ft). __

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 30 to Jan. 23, Jan. 30, 31, Feb. 17-23.
CONNECTICUT RIVER BASIN 221

Burlington Brook near Burlington, Conn.

Location. Lat 41°47'10", long 72°57'55", on left bank l£ miles north of Burlir^ton, Hartford County, 3 miles upstream from mouth, and 3 miles southwest of Collinsviile.

Drainage area. 4.12 sq mi.

Records available. September 1931 to September 1957.

Gage. Water-stage recorder and sharp-edged square orifice and rectangular weir. Datum of 

gage is 714.00 ft above mean sea level, datum of 1929.

Average discharge. 26 years, 8.18 cfs.

Extremes. Maximum discharge during year, 80 cfs Jan. 23 (gage height, 2.47 ft); minimum, 

0.32 cfs July 18 (gage height, 0.18 ft); minimum daily, 0.46 cfs July 18.

1931-57: 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, that 

of July 18, 1957; 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 1956-57, except periods of ice effect (gage

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

(Shifting-control method used May 7 to Sept. 30)

0.2 

.4 

.7

1.0

0.30

.81

1.85

3.11

1.1 

1.3 

1.7 

2.1

4.55

10.3

29.0

53

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

1.37

1.33

1.26

1.40

1.74

1.37

2.88

1.93

1.58

1.40

1.37

1.33

1.33

1.33

1.29

1.26

1.26

1.23

1.19

T719

1.23

1.23 

3.16

2.70

2.01

al.75

al.55

al.4

al.3 

1.26

1.37

48.00

1.55

0.376

0.43

Nov.

8.99

6.03

9.27

3.93

2.93

2.46

2.21

2.33

2.67

2.13

1.89

7713

2.17

1.97

1.93

2.05

2.09

9.89

6.57

4.33

*3.42

~6T57

4.55

4.13

4.55

5.26

4.33

4.13 

3.93

131.44

4.38

1.06

1.18

Dec.

3.57

3757

3.93

4.33

4.13

4.13

4.33

4.33

10.3

8.95

7.71

16.6

8.95

7.41

9.93

22.2

16.9

9.60

6.57

5.77

6.57

8.63 

15.6

9.93

13.0

8.63

6.57

5.77

5.77 

b5.3

b5.0

253.98

8.19

1.99

2.29

Jan.

b4.3

b4.1

b3.9

b3.7

3.57

3.15

3.42

3.57

3.42

3.57

3.42

3.29

3.57

3.11

2.71

2.97

2.93

2.80

2.71

2.62

3.23

b9.60 

52

b20

b!2

b6.6

6.03

5.26

5.26 

4.78

b4.1

195.69

6.31

1.53

1.76

Feb.

4.33

4.13

b3.7

6.03

6.03

bS.O

4.55

3.57

6.95

19.7

10.3

bS.5

b4.8

5.02

4.55

b4.1

4.13

3.93

4.13

*3.74

b3.4

b3.35 

"5757

3.74

4.33

7.13

~Oo 25.2

-

175.49

6.27

1.52

1.58

Mar.

b6.8

6.57

5.77

bS.O

b4.1

b4.1

4.55

6.85

11.1

8.95

b6.0

7.41

7.41

7.13

6.57

19.2

9.93

7.71

6.85

*6.85

8.00

9.60 

7.71

6.30

5.52

5.26

5.26

5.02

4.55 

4.33

4.33

214.73

6.93

1.68

1.94

Apr.

18"7§~ 3.93

11.9

7.71

23.7

59

29.2

19.2

27.4

20.7

16.4

12.6

11.1

9.60

8.63

8.32

8.00

7.71

9.27

8.00

7.41

6.85 

6.57

6.30

*5.77

8.32

7.13

6.30

5.77 

5.52

387.11

12.9

3.13

3.49

May

5.26

5.26

5.02

5.02

5.02

4.55

4.13

3.74

3.42

3.20

3.57

4.78

4.55

4.33

7.41

4.78

3.93

3.93

4.78

14.3

13.4

*7.13 

5.77

4.78

3.74

3.20

3.11

2.84

a2.6 

a2.4

a2.2

152.15

4.91

1.19

1.37

June

a2.1

a2.1

a3.0

a2.5

aZ.O

al.8

a2.0

al.7

al.5

al.4

al.3

al.3

al.2

al.2

al.l

al.l

al.O

al.O

al.l

1.16

1.06

.96 

796

.96

.96

1.37

1.47

1.33

1.47 

1.16

43.26

1.44

0.350

0.39

July

1.02

.90

.87

.90

.99

.78

.90

.87

.99

1.29

.96

.72

.90

1.33

.99

.81

.64

.46

a. 7

a. 5

a. 6

a. 7 

1.09

.84

.72

*.75

.64

.90

2.18 

T740

1.06

28.40

0.916

0.222

0.26

Aug.

0.99

.69

.67

.92

1.16

.81

.72

.67

.72

.67

.90

.72

.61

1.01

2.54

.93

^59

.67

.69

.75

.94

2.35 

1.13

.90

1.02

2.80

*T740

.96

.84 

.99

2.25

3^.01

1.06

0,257

0.30

Sept.

1.06

.90

.84

.78

.75

.72

.72

.69

.67

^§4

.78

.69

.75

.72

.72

1.10

2.71

1.44

1.40

.99

.99

1.09 

1.06

.87

.75

.72

.69

.69

.69 

.69

27.31

0.910

0.221

0.25

Calendar year 1956: Max 83 Mln 0.93 Mean 7.63 Cfsm 1.85 In. 25.17

Water year 1956-57: Max 59 Mln 0.46 Mean 4.63 Cfsm 1.12 In. 15.24

Peak discharge (base, 140 cfs). No peak above base.

* 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 nearby streams.

b Stage-diacharge relation affected by ice.
222 CONNECTICUT RIVER BASIN

Pequabuck River at Forestville, Conn.

Location. Lat 41°40'23", long 72 C 54'04", on left bank 700 ft upstream from station of 

 New York, New Haven and Hartford Railroad at Forestville, Hartford County, a quarter of

a mile downstream from Copper Mine Brook, and 6j miles upstream from mouth. 

Drainage area. --45. 2 sq mi.

Records available . July 1941 to September 1957. 

Gage . Water-stage recorder. Datum of gage is 197.72 ft above mean sea level, datum of

1929 (levels by Connecticut State Water Commission).

Average discharge . 16 years, 87.1 cfs (adjusted for storage and diversion). 

Extremes . Maximum discharge during year, 614 cfs Apr. 6 (gage height, 2.68 ft); minimum,

16 cfs Aug. 18, Sept. 29, 30 (gage height, 0.86 ft).

1941-57: Maximum discharge , 11,700 cfs Aug. 19, 1955 (gage height, 13.22 ft, from

high-water mark in gage house), 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 floodmarks (discharge,

3,800 cfs, on basis of slope-area determination of peak flow and computation of peak

flow over dam) . 

Remarks. --Records good. Flow regulated by Whigville Reservoir (see p. 234) 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.

Rating table, water year 1956-57 (gage height, in feet, and discharge,

in cubic feet per second)

(Backwater from ice Jan. 14, 15, 18, 2O. Backwater from aquatic 

growth May 22 to Aug. 25)

0.8

1.0

1.1 

1.3

1.5 

2.0 

2.5

101

262

510

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

la

19

20

21

22

23

24

25

26

27

28

29

30

31

Total

Mean

(t)

Oct.

27

26

23

33

25

23

50

28

25

24

23

23

22

20

22

22

22

22

22

20

20

22

28

24

23

22

22

21

22

22

28

756

24.4

+6.2

Nov.

97

18

52

33

*29

28

26

28

27

25

23

26

28

25

24

24

23

84

40

33

38

73

40

30

28

34

30

29

28

26

1,079

36.0

+6.5

Dec.

24

2J

26

26

25

25

25

24

65

46

38

77

55

80

88

144

TTI

79

60

55

58

62

83

73

73

60

53

55

55

45

42

1,756

56.6

+8.2

Jan.

39

35

35

38

38

33

38

36

34

35

33

30

29

*29

28

29

29

28

26

26

30

64

291

88

62

50

43

43

45

42

40

1,446

46.6

+ 7.8

Feb.

40

40

36

57

52

*50

48

46

88

161

83

55

48

48

46

42

39

39

40

40

38

36

35

35

39

62

1E8

66

-

1,537

54.9

+6.5

Mar.

57

55

52

48

45

48

48

70

83

62

52

50

57

57

50

-JG 118

58

55

*68

70

70

57

52

48

48

46

46

46

43

40

1,739

57.1

+7.0

Apr.

40

146

101

75

246

460 216"

208

317

197

160

121

118

104

97

90

86

81

81

75

70

70

66

64

*60

71

66

57

55

53

3,681

123

+9.3

May

48

48

48

46

42

43 .'43

42

40

40

37

40

40

40

64

42

36

33

38

108

86

53

42

36

36

27

28

*26

26

25

24

1,327

42.8

+6.6

June

24

26

26

25

25

24

24

22

22

22

22

22

22

22

22

20

22

22

27

22

20

19

18

23

20

20

20

20

24

18

662

22.1

+ 7.0

July

18

18

18

17

18

17

17

18

19

18

18

*17

18

23

18

18

18

18

18

18

17

18

20

18

18

21

18

20

24

24

20

580

18.7

+5.5

Aug.

19

18

17

20

19

18

18

18

18

20

18

18

18

18

18

18

17

16

18

18

27

22

18

17

18

48

*22

20

20

20

18

612

19.7

+4.6

Sept.

17

18

20

20

20

20

18

17

18

22

24

20

20

20

18

34

26

22

20

20

20

18

20

19

19

19

18

17

17

18

599

20.0

+3.9

Adjusted for diversion and change in reservoir contents

Mean

Cfsm

In.

30.6

0.677

0.78

42.5

0.940

1.05

Calendar year 1956: I

Water year 1956-57: I

64.8

1.43

1.65

54.4

1.20

1.38

61.4

1.36

1.42

64.1

1.42

1.64

132

2.92

3.26

49.4

1.09

1.26

29.1

0.644

O.72

24.2

0.535

O.62

24.3

0.538

0.62

23.9

0.529

0.59

Observed Adjusted

lax 504 Mln 20 Mean 75.7 Mean 83. 0 C"sm 1.84 In. 25. 03

lax 460 Min 16 Mean 43.3 Mean 49.9 C°sm 1.1O In. 14.99

Peak discharge (base, 660 cfs). Ho peak above base.

* Discharge measurement made on this <5,ay.

t Change in contents, equivalent in cuoic feet per second, in Whigville Rese-voir, diversion for 

municipal supply of city of New Britain from Whigville Reservoir, and at Whites Bridge pumping plant.
CONNECTICUT RIVER BASIN 223

Salmon Brook near Granby, Conn.

Location. Lat 41°56'14", long 72°46 I 36", on left bank 50 ft upstream from New 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 County, and 1.9 miles upstream 

from mouth.

Dralnaga area. 66.8 sq mi.

Records available. July 1946 to September 1957.

Gage. Water-stage recorder. Datum of gage is 147.54 ft above mean sea level, datum of

Average discharge. 11 years, 134 cfs.

Extremes. Maximum discharge during year, 780 cfs Jan. 23 (gage height, 5.49 ft); minimum, 

about 5 cfs Aug. 18 (gage height, 2.15 ft).

1946-57: 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, that of Aug 18 

1957; minimum gage height, 1.42 ft Aug. 26, 1949.

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

which are fair. Infrequent regulation at low flow.

Revisions.--WSP 1431: Drainage area.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

3O

31

Ttotal

Mean

Cfsm

In.

Oct.

33

34

33

32

35

34

41

43

36

34

32

31

31

31

31

30

30

30

29

28

28

28

31

36

33

31

30

30

29

29

30

992

32.0

0.479

0.55

Nov.

51

72

90

64

55

47

43

43

46

43

39

38

37

36

35

34

33

55

80

65

55

100

120 -9C

65

55

60

55

50

45

1,696

56.5

0.846

0.94

Dec.

40

36

36

40

40

*38

38

38

60

67

56

159

121

99

96

164

175

1ST

b90

82

78

83

134

115

151

121

97

88

84

t?2

b6S

2,687

86.7

1.30

1.50

Jan.

b63 beo

b57

b55

53

b50

b49

49

50

b51

b50

b49

b48

*b46

b44

b41

b38

b36

b38

b39

b42

b75

530

330

220

140

110

100

95

91

2,757

88.9

1.33

1.53

Feb.

85

81

78

79

80

78

75

75

90

120

95

80

75

70

*64

62

59

59

59

57

b53

53

55

60

63

90

345

T57

2,427

86.7

1.30

1.35

Mar.

126

107

101

88

83

*78

79

87

139

127

102

99

96

101

99

189

16T

123

107

1O3

106

127

115

101

93

88

85

82

80

77

7_2

3,221

104

1.56

1.80

Apr.

70

119

123

97

320

380" 565

275

*318

285

251

213

185

155

135

121

114

111

126

114

105

94

88

85

80

91

87

81

76

73

4,837

161

2.41

2.69

May

72

69

64

63

62

60

58

55

*54

51

62

66

65

59

74

63

55

55

54

76

126 ~85

70

61

55

51

49

50

47

44

43

1,918

61.9

0.927

1.07

June

41

41

M43

41

39

38

38

36

35

34

33

33

31

30

30

28

28

27

26

25

24

24

23

22

23

26

21

21

20

927

30.9

0.463

0.52

July

18

17

16

16

16

16

15

14

17

28

18

15

13

12

11

10

99~

12

11

11

11

11

12

12

*13

14

15

18

16

13

439

14.2

0.213

0.25

A lg .

12

11

10

12

13

12

11

11

11

11

13

14

14

13

13

13

11

8.5

8 5.5

10

12

11

11

13

*16

TS

11

10

10

11

358.0

11.5

C.172

0.20

Sept.

To- 1O

il

11

12

12

12

12

12

12

13

13

13

13

14

14

22

15

16

16

16

16

16

IS

14

14

14

14

14

14

413

13.8

0.207

0.23

Calendar year 1956: Max 84O Mln 22 Mean 1O5 Cfsm 1.57 In. 21.4?

Water year 1956-57: Max 565 Min 8 Mean 62.1 Cfsm 0.930 In. 12.63

Peak discharge (base, 1,OOO cfs}. No peak above base.

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.

Note. No gage-height record Nov. 13 to Dec. 5, Jan. 23 to Feb. 14; discharge estimated on basis 

f weather records, engineers' notes, existing record, and records for nearby streams.
224 CONNECTICUT RIVER BASIN

Farmington River at Rainbow, Conn.

Location Lat 41°54'41", long 72°41'16", on left bank at Rainbow, Hartford County, 300 ft

 FronTStevens Paper Mill, 0.4 mile downstream from Farmington River Power Co. dam,

1.3 miles upstream from Poquonock, 6.4 miles downstream from Salmor Brook, and 8 miles 

upstream from mouth.

Reeords\vaffable.--August 1928 to September 1957. Prior to 1940, published as "at

Gage3 Water-stage recorder. Datum of gage is 35.36 ft above mean ser level, datum of 

~1929 Prior to July 1, 1939, at site 5| miles upstream at datum 94.85 ft higher. 

Average discharge. 29 years, 1,082 cfs (adjusted to present site; adjusted for storage 

and diversion). . , . , , . . . ft_\ , , Extremes.--Maximum discharge during year, 4,500 cfs Apr. 7 (gage heiglt, 5.34 it); minimUmi928-57: MaxiiiM/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. b, 

1944, Oct. 28, Nov. 11, 1945, and Feb. 22, 1947. 4. ., 4. -o >, Remarks.--Records good. Flow regulated by powerplant, by Otis, Barkhamsted, East Branch,

 R5p5ug, and Whigville Reservoirs, having a combined capacity of about 6,450,000,000 

cu ft (see p. 233), 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 1301: 1937-43

 (adjusted figures of monthly and yearly discharge and runoff). WS D 1431: Drainage 

area.

Rating tables, water year 1956-57 (gage height, in feet, and discharge, 

in cubic feet per second)

Oct. 1 to July 27 July 28 to Sept. 30

1.0 40

1.2 94

1.5 210

2.0 4S5

2.5 

3.0 

4.6

850

1,310

3,400

0.9 

1.0

1.2

30

80

1.5 

1.8

190

340

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

138

358

425

455

430

386

296

312

626

408

506

577

364

242

302

155

632

440

341

254

220

327 

364 

290

422

552

513

322

215

260

426

11,558

373

-72

Nov.

776

881

886

1,010

586

651

486

376

404

396

206

379

375

279

400

412

282

339

630

606

519

544 

1.450 

1,000

354

416

593

522

369

638

16,745

558

+77

Dec.

338

361

372

401

427

414

596

134

268

894

752

920

1,430

1,040

1,160

1,030

1,490

1,580

1,100

737

810

860 

961 

1,430

1,040

1,580

1,000

850

900

672

26,145

843

+186

Jan.

446

358

500

662

552

440

410

583

488

505

528

448

455

400

375

360

354

352

394

366

370

565 

1,630 

*2 . 47O

2,210

1,370

909

613

712

741

726

21,292

687

+162

Feb.

622

623

515

627

653

662

540

560

605

1,090

1,110

916

608

590

668

479

531

524

*496

576

450

467 

402 

455

419

580

1,510

2.100

-

19,328

690

+153

Mar.

1,4OO

950

730

692

706

*704

754

S54

888

642

686

794

657

596

728

1,380

1^670

1,260

1,280

811

936

846 

966 

884

653

737

894

708

724

596

600

26,726

862

+177

Apr.

476

935

1,050

1,300

1,180

2,390

5 , 400'

2^670

2,530

2,530

1,940

1,730

1,700

1,680

1,300

1,180

1,090

1,030

1,070

1,220

946

928 

843 

772

734

798

754

684

551

660

40,071

1,336

+319

May

626

581

464

469

524

438

418

481

*461

466

326

442

574

782

633

414

444

494

356

420

757

1.250 

650 

587

347

340

392

431

466

280

283

15,596

503

+79

June

322

283

286

270

316

340

~66 630

182

192

228

400

262

487

275

270

248

216

400

220

318

126 

260 

224

154

282

267

502

350

212

8,588

286

-47

July

92

186

197

186

109

109

72

112

212

354

302

233

244

224

188

146

140

125

132

54

84

188 

108 

80

114

78

104

86

118

134

238

4,729

153

-10

Aug.

232

109

240

136

144

80

92

142

60

53

97

110

61

76

96

102

24

85

88

92

103

110 

113 

160

146

*172

121

80

147

108

128

3,507

113

+3

Sept.

62

146

164

158

110

65

178

27

78

114

111

72

107

70

70

164

248

146

58

166

180

if 

148

204

248

330

294

205

197

4,298

143

-33

Adjusted for diversion and change in reservoir contents

Mean 

Cfsm 

In.

301 

0.509 

0.59

63E

1.07 

1.19

Calendar year 1956: 

Water year 1956-57:

1,029 

1.74 

2.01

849 

1.44 

1.66

843 

1.43 

1.49

1,039 

1.76 

2.03

Observed

1,655 

2.80 

3.12

582 

0.985 

1.14

Max 6,790 Min 124 Mean 1,075 

Max 3,400 Mln 24 Mean 544

239

0.404 

0.45

. 143 

0.242 

0.28

116 

0.196 

0.23

Adjusted

110 

0.186 

0.21

Mean 1,105 Cfsm 1.87 In. 25.49 

Mean 626 Cfsm 1.06 In. 14.40

Discharge measurement made on this day. 

t Change in contents, equivalent In cubic feet per second, in Otis, Barkham3ted, East Branch, 

Nepaug, and Whigville Reservoirs and Whites Bridge pumping plant; furnished ty' Colllns Co., water 

Bureau of Hartford Metropolitan District Commission, and Board of Water Commis-'loners of New Britain
CONNECTICUT RIVER BASIN 

South Branch Park River at Hartford, Conn.

225

Location. Lat 41 "44'02", long 72"42'51", 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 1957.

Gage Water-stage recorder. Datum of gage is 31.07 ft above mean sea level, datum of 

~J~929 (levels by Department of Engineering, city of Hartford).

Average discharge. 21 years, 72.2 cfs.

Extremes.--Maximum discharge during year, 678 cfs Apr. 6; maximum gage height, 7.76 ft 

Apr. 6; minimum discharge, 7 cfs Sept. 2, 3 (gage height, 1.47 ft).

1936-57: Maximum discharge, 5,000 efs Aug. 19, 1955, from rating curve extended 

above 800 efs 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, 

7 cfs Sept. 2, 1957.

Flood of Mar. 12, 1936, reached a stage of 12.1 ft, as determined by Hartford city 

engineers, from floodmarks.

Remarks. Records good except those for periods of ice effect and those below 10 cfs, 

which are fair. Some regulation by dams upstream and by storage and diversion at 

Hartford water-supply reservoirs on headwater streams.

Revisions (water years). WSP 1201: 1939-40(P), 194l(M), 1943-44(P), 1950. WSP 1431: 

1955.

Rating tables, water year 1956-57, except periods of Ice effect (gage 

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

Oct. 1 to Apr. Apr. 9 to May 20 May 21 to Sept. 30

1.7 

2.2

4.0

21

39

125

6.0 

6.5 

7.2

270

345

515

1.8 

4.0

15 

1Z5

Note. --Same as 

preceding table 

above 4.O ft.

1.45 

1.7 

2.3 

4.0

6.5

14

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

33

24

25

26

27

28

29 

30

31

Ibtal

Mean

Cfsm

In.

Oct.

38

36

27

36

33

27

82

*34

30

36

39

30

28

26

28

30

38

39

40

31

27

28

30

27

27

26

24

23

27

38

1,008

32.5

0.800

0.92

Nov.

106

57

97

44

*36

28

27

36

32

27

242"6

30

27

26

42

54

~§S 165

58

39

144

49

42

38

54

35

30

29

27

1,511

50.4

1.24

1.38

Dec.

25

23

27

26

26

26

32

108

77

52

103

65

104

237

270

16?

98

72

63

68

62

125

93

102

77

63

62

63 

53

44

2,438

78.6

1.94

2.24

Jan.

36

*39

39

34

33

31

30

30

30

33

34

33

29

30

30

28

26

25

24

23_

24

65

150" 300

67

69

65

64

67

66

64

1,568

50.6

1.25

1.44

Feb.

63

63

62

84

*79

72

72

62

111

200

84

62

53

43

42

40

38

37

38

38

36

35

34

30

32

47

164

65

1,786

63.8

1.57

1.64

Mar.

58

57

53

46

*50

49

49

63

~7TT 112

62

58

58

60

52

110

66

54

51

54

81

77

63

56

52

40

39

38

36 

34

32

1,786

57.6

1.42

1.64

Apr.

38

136

97

73

*353

502

203

184

370

164

128

112

105

92

90

88

86

73

60

51

48

55

55

54

52

54

. 40

36

34 

32

3,465

116

2.86

3.19

May

28

30

42

49

24

*24'

24

31

25

22

20

24

23

28

53

25

20

19

21

66

56

36

31

31

23

18

25

23

21 

18

18

898

29.0

0.714

0.82

June

20

19

25

22

20

23

23

21

16

18

21

21

21

21

20

17

17

19

*41

30

19

16

14

T6

22

57

83

28

37 

24

751

25.0

0.616

0.69

July

18

16

17

23

18

12

11

14

48

39

16

*13

12

36

14

13

13

13

12

11

9.5

10

12

10

10

12

14

9 

7T

28

34

. 588.5

19.0

0.468

0.54

*«.

15

12

11

12

17

25

14

11

12

13

12

10

11

11

13

13

9.5

7.5

9

11

13 *ro

12

9

31

121

14 

11

17

10

542.0

17.5

0.431

0.50

Sept.

7.5

7

9

11

12

9.5

8.5

7.5

8

9.5

16

11

10

14

9

17

52

13

12

11

18

11

10

11

12

16

16

16 

14

14

392.5

13.1

0.323

0.36

Calendar year 1956 : Max 423 Mln 13 Mean 64.1 Cfsm 1.58 In. 21.46

Water year 1956-57 : Max 502 Mln 7 Mean 45.8 Cfsm 1.13 In. 15.36

Peak discharge (base, 550 cfs). Jan. 23 (10:30 a.m.) 552 cfs (7.03 ft at 1:30 p.m.)j Ap-. 6 (2 a.m.) 

678 cfa (7.76 ft at 4 a.m.)._________________________________________________________

* Discharge measurement made on this day.

Note.--Stage-discharge relation affected by ice Jan. 1, 3-7, 11-24.
226 CONNECTICUT RIVER BASIN

North Branch Park River at Hartford, Conn.

Location. Lat 41°47'03", long 73°42'31", 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 1957.

Gage.--Water-stage recorder and masonry control. Datum of gage is 34.2C ft above mean sea 

level, datum of 1929 (levels by Department of Engineering, city of Hartford).

Average discharge.--21 years, 38.2 cfs.

Extremes. Maximum discharge during year, 660 cfs Apr. 6; maximum gage height, 6.06 ft 

Jan. 23 (ice jam); minimum discharge, 0.9 cfs Sept. 30 (gage height, 1.08 ft).

1936-57: 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.f miles upstream; 

maximum gage height, 18.8 ft Aug. 19, 1955, from floodmarks; minimum discharge, 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 ice or debris, which are 

fair. Some regulation at small dams upstream and by storage and diversion at a 

Hartford water-supply reservoir on headwater stream.

Revisions (water years) . WSP 891: 1939. WSP 1201: 1937(M), 1938, 19C9(M), 1940, 

1941(M), 1942(P), 1943, 1944(M), 1945, 1946(P), 1947(M), 1948-49(p), 1950. Revised 

figures of discharge, in cubic feet per second, for the water year 1956, superseding 

those published in WSP 1431, are given herewith:

Date

1956

Aug. 1

Z

3

4

5

6

7

e

9

10

11

12

13

14

15

16

Discharge

3.3

3.0

3.0

3.3

2.8

2.7

3.0

4.6

3.0

Z.7

2.5

2.2

2.2

2.5

2.8

3.0

Date

L956-Con.

Aug. 17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Sept. 1

Discharge

2.7

, Z.8

; 2.7

' 2.2

5.4

6.0

. 4.7

3.9

4.6

2.7

2.5

3.3

4.4

6.0

7.3

7.1

Date

19 56 -Con.

Sept. 2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

Discharge

9.7

5.8

4.1

3.3

3.3

20

6.5

4.1

3.0

2.7

2.5

3.5

3.3

2.8

4.6

4.6

Date

L956-Con.

Sept. 18

19

ZO

21

22

23

24

25

26

27

28

Z9

30

31

Discharge

5.4

4.4

7.3

5.6

3.7

3.9

9.7

8.1

5.8

4.9

15

8.9

5.4

-

Month

August 1956. ...............

Water year 1955-56 .......

Cfs-days

108.3

Maximum

7.3

2,500

Minimum

2.2

2.2

Mean

3.49 

5 97

61.0

Per square 

mile

0.138

2.41

Runoff In 

Inches

0.16

32.80
CONNECTICUT RIVER BASIN 

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

Rating table, water year 1956-57, except periods of Ice effect or backwater 

from debris (gage height, In feet, and discharge, In cubic feet pep second)

227

1.05

1.2

1.4

1.6

1.9

0.75

1.7

5.2

51

119

340

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

5.2

5.2

5.0

5.4

7.3

6.5

25

*13

7.8

6.2

5.8

5.6

5.4

5.4

5.2

5.2

5.0

5.0

4.4

4.1

4.6

5.2

5.6

6.9

5.6

5.4

5.8

5.6

5.6

5.4

6.2

199.6

6.44

0.255

0.29

Nov.

32

23

59

18

*11

8.6

8.4

8.1

9.2

8.1

6.7

TTT

8.9

8.4

7.6

7.6

7.1

58

33

17

15

90

30

16

10

23

23

16

13

10

572.8

19.1

0.755

0.84

Dec,

8 1

ITT

*8.9

11

9.5

8.9

8.9

8.9

78

69

40

128

48

60

141

183

105

67

41

52

47

61

111

79

92

48

54

34

41

36

17

1,664.3

55.7

2.12

2.44

Jan.

15

11

8.9

9.2

10

9.5

9.7

10

11

11

9.5

9.2

8.9

8.6

8.4

8.4

8.1

7.8

7.6

7.6

7.8

54

180

50

28

19

16

16

15

15

15

585.2

18.8

O.745

0.86

Feb.

14

14

14

*20

26

23

32

36

86

198

65

31

18

15

15

16

16

15

16

16

13

12

12

14

16

28

173

51

-

1,005

35.9

1.42

1.48

Mar.

27

50

57

50

*24

24

26

54

126

65

31

30

28

27

26

145

52

34

28

36

71

62

36

27

22

20

19

18

18

16 

15

1,204

38.8

1.53

1.76

Apr.

14

81

60

*28

273

461

119

96

278

98

57

43

40

52

27

25

24

23

35

25

20

20

18

16

19

18

20

18

17

13.

2,018

67.3

2.66

2.97

May

12

11

10

9.7

9.5

»8.9

8.1

8.4

8.4

8.6

8.4

8.9

10

10

14

12

8.1

7.1

6.5

52

42

19

14

12

9.5

8.1

9.2

11

7.6 

6.7

6 . £

356.9

11.5

0.455

0.52

June

6.2

6.2

7.1

6.5

*6.0

5.2

5.6

5.0

4.4

5.5

4.1

4.9

5.0

5.0

4.7

5.2

5.4

5.0

*4.9

4.4

3.7

4.6

4.1

4.6

5.0

9.2

7.1

5.6

6.7 

5.2

159.9

5.35

0.211

0.24

July

4.7

3.5 fro 7 71

4.9

5.3

2.8

5.7

28

20

*5.8

4.6

4.6

7.8

5.8

4.7

4.4

4.1

3.9

4.1

4.1

4.9

4.9

4.1

3.7

3.7

3.5

3.7

12

7.3 

5.6

184.9

5.96

0.236

0.27

Aug.

5.4

4.4

3.7

3.5

3.5

2.3

1.7

1.5

1.9

3.3

3.7

3.7

4.4

3.0

3.9

4.6

5.9

2.3

1.7

1.8

2.3

*3.0

2.8

2.7

5.5

19.

5.8

4.1

2.8 

3.7

4.1

109.0

3.52

0.139

0.16

Sept.

3.7

3.0

2.7

4.1

4.6

3.9

3.5

2.8

3.5

3.0

4.7

5.6

5.8

6.9

6.2

7.5

9.5

5.4

4.1

3.5

4.4

4.7

5.2

4.6

5.5

2.5

5.5

1.9

1.2 

. 95

126.25

4.21

0.166

0.19

Calendar year 1956: Max 409 Mln 2.2 Mean 35.6 Cfsm 1.41 In. 19.14

Water year 1956-57: Max 461 Mln 0.95 Mean 22.4 Cfsm 0.885 In. 12.02

Peak discharge (base, 500 cfs).--Apr. 6 (3:30 a.m.) 660 cfs (5.10 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Jan. 11-24, 29, Feb. 12, 14-18, 21, 22. Backwate 

from debris on control Oct. 1, 2, Oct. 18 to Nov. 5, Nov. 12 to Dec. 3, Dec. 8 to Jan. 3, Apr. 15, 

16, 19-21, May 17 to June 5, June 5 to July 5, Aug. 4-22.
228 CONNECTICUT RIVER BASIN

Park River at Hartford, Conn.

Location. Lat 41°45'36", long 72°41'42", on left bank at downstream side of plate-girder 

1'ootbrldge 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 from mouth.

Drainage area. 74.0 sq ml.

Records available . October 1936 to September 1957.

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 Hartford).

Average discharge . 21 years, 121 cfs.

Extremes Maximum discharge during year, 1,170 cfs Apr. 6 (gage height, 4.94 ft); mlnlmum, 11 cfs Aug. 18, 19, Sept. 8; minimum gage height, 2.33 ft July 29.

1936-57: Maximum discharge, 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 slopearea 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 diversion? upstream; minimum dally discharge, 11 cfs Oct. 6, 1941, Aug. 18, 1957.

Remarks. Records good. Some regulation by dams above station and by storage and dlverslon at Hartford water-supply reservoirs on small headwater streams.

Revisions water years).--WSP 1431: 1955.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

46

46

34

43

46

*34

135

55

42

46

50

42

40

35

35

40 

50

50

50

42

33

35

42

37

37

35

37

31

31

37 

52

1,368

44.1

0.596

0.69

Nov.

176

*90

187

72

55

40

35

46

52

40

33

35

44

40

37

55 

75

268

149

84

65

295

105

72

58

92

72

58

52

46

2,528

84.3

1.14

1.27

Dec.

40

37

42

44

42

40

40

46

207

193

107

276

155

205

470

505 

359

194

132

110

120

132

276

183

225

149

113

101

113

101 

70

4,827

156

2.11

2.43

Jan.

62

55

*55

50

48

46

46

46

46

48

48

46

44

44

44

42 

40

37

37

35

37

130

635

211

107

92

81

78

81

81 

78

2,530

81.6

1.10

1.27

Feb.

78

75

72

*110

116

104

113

107

191

465

176

101

84

68

65

62 

60

58

60

58

52

52

52

48

50

80

401

146

3,104

111

1.50

1.56

Mar.

101

98

104

90

*87

84

84

113

281

191

110

101

98

101

92

Hi

145

101

90

101

162

176

116

95

84

75

70

68

65

62

58

3,517

113

1.53

1.76

Apr.

55

246

201

*116

513

980

412

293

685

326

209

173

162

135

129

126 

120

101

107

84

75

78

81

78

78

81

68

60

55

52

5,879

196

2.65

2.96

May

48

44

52

62

40

*37

37

42

37

35

33

33

37

42

78

46 

37

31

29

158

110

58

50

48

37

31

37

40

33

29

11

1,438

46.4

0.627

0.72

June

27

27

37

31

29

29

31

29

25

24

27

29

29

29

27

25 

25

27

*58

40

25

24

21

24

29

101

120

35

48

31

1,063

35.4

0.478

0.53

Jul-r

27

22

22

34

27

19

16

19

79

93

*25

21

19

48

21

19 

19

19

18

18

16

18

19

15

15

16

19

14

"40 120

44

?21

2J.7

0.401

0.46

Aug.

24

19

18

18

24

29

19

15

15

16

18

15

16

16

18

19 

16

11

12

15

16

*35

18

14

25

-33 166

21

16

22 

16

735

23.7

0.320

0.37

Sept.

13

12

15

19

21

16

14

12

14

16

24

19

19

25

16

31 

21

22

18

18

24

18

18

19

18

21

21

19

16

16

611

20.4

0.276

0.31

Calendar year 1956: Max 655 Mln 18 Mean 112 Cfsm 1.51 In. 20.55

Water year 1956-57: Max 980 Mln 11 Mean 78.1 Cfsm 1.06 In. 14.33

Peak discharge (base, 1,000 cfs). Apr. 6 (5:30 a.m.) 1,170 cfs (4.94 ft).

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Jan. 1, 3-8, 11-23.
CONNECTICUT RIVER BASIN 229

Hockanum River near East Hartford, Conn.

Location. Lat 41°46'59", long 72°35'16", on left bank 700 ft downstream from Cam at Case 

Bros., Inc., paper mill, if miles downstream from Hop Brook, and 2f miles erst of East 

Hartford, Hartford County.

Drainage area. 74.5 sq ml.

Records available. September 1919 to September 1921, July 1928 to September 1957.

Gage. Water-stage recorder. Datum of gage Is 54.5 ft above mean sea level, dftum of 1929 

(levels by Department of Engineering, city of Hartford).

Average discharge. 31 years, 116 cfs (adjusted for storage).

Extremes.--Maximum discharge during year, 455 cfs Apr. 9 (gage height, 4.32 ft); minimum, 

16 cfs Aug. 24, 25 (gage height, 1.01 ft); minimum dally, 21 cfs Oct. 14, Aug. 25.

1919-21, 1928-57: 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 dally, 1.2 cfs Sept. 2, 1920.

Remarks. Records good except those for periods of no gage-height record, which are fair. 

Flow' regulated by Shenlpslt Lake (see p. 234), other small reservoirs and Industrial 

plants upstream.

Revisions (water years). WSP 781: Drainage area. WSP 851: 1934(M), 1936(M). WSP 1051: 

1920-21 and 1928-45 (monthly and yearly discharge and runoff). WSP 1201: 1920(M), 

1929(M), 1931, 1932-3n(m), 1944.

Rating table, water year 1956*57 (gage height, In feet, and discharge,

in cubic feet per second) 

(Shifting-control method used June 28 to July 30, Aug. 14 to Sept. 30)

1.1

1.2 

1.5

2.0 

3.0 

4.2

97

225

435

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

(t)

Oct.

106

38

23

79

99

39

59

120 ~JS

66

64

63

30

21

50

63

65

57

32

24

22

75

35

46

53

53

53

50

74

69

*52

1,755

56.6

-12.0

Nov.

58

71

84

62

48

42

41

43

53

44

43

41

42

41

38

32

30

98

*101

66

64

108 ~92

64

55

107

76

64

64

68

1,840

61.3

+ 14.8

Dec.

39

27

51

62

63

61

66

38

66

155

85

151

125

154

187

239

225

167

132

120

138

65

182

164

170

183

124

133

74

120

99

3,665

118

+ 22.1

Jan.

88

a85

a85

a95

a50

allO

a95

a90

*89

99

102

44

61

77

109

74

a80

a90

a35

a50

a 100

137

350

*248

160

73

101

143

114

90

89

3,213

104

+ 9.9

Feb.

128

54

83

156

113

102

100

122

65

205

214

117

110

106

117

54

74

128

99

*94

94

111

56

47

W

107

215

T4T5

-

3,098

111

+9.3

Mar.

125

118

110

99

98

97

98

110

183

171

124

118

112

108

105

161

132

110

109

124

139

157

136

112

104

106

104

*100

99

98

89

3,656

118

+ 15.3

Apr.

84 164"

176

122

207

415

330

279

425

357

287

248

218

183

170

163

153

148

170

152

136

126

124

120

112

114

112

99

*96

95

5,585

186

+6.1

May

89

84

84

86

78

74

78

78

71

74

73

76

78

79

101

76

66

68

62

89

120

T8

*79

75

64

55

84

97

66

5252"

2,396

77.3

-10.7

June

55

55

61

55

52

50

50

49

46

43

44

48

52

51

51

51

44

43

66

16

58

56

50

46

44

50

63

74

62

52

1,597

53.2

-18.4

July

48

42

39

38

45

42

36

*35

46

104

60

*47

43

65

53

52

49

46

45

48

46

49

55

49

45

42

46

50

64

58

77

1,564

50.5

-23.9

Aug.

*104

^55

49

49

63

46

42

39

32

28

28

28

28

28

27

27

26

25

27

26

26

26

26

23

ii

37

34

28

27

26

28

1,079

34.8

-7.9

Sept.

28

26

26

24

26

26

25

26

25

24

*23

23

26

28

27

28

52

35

29

26

28

31

28

26

26

25

23

22

^

23

809

27.0

-3.4

Adjusted for change in contents in Shenipslt Lake

Mean 

Cfsm 

In.

44.6 

0.599 

0.69

76.1 

1.02 

1.14

Calendar year 1956: 

Water year 1956-57:

140 

1.88 

2.17

114 

1.53 

1.76

120 

1.61 

1.68

133 

1.79 

2.06

Observed

192 

2.58 

2.88

66.6 

0.894 

1.03

Max 470 Min 20 Mean 124 

Max 425 Min 21 Mean 82.9

34.8 

0.467 

0.52

26.6 

0.357 

0.41

26.9 

0.361 

0.42

23.6 

0.317 

0.35

Adjusted

Mean 124 Cfsm 1.66 In. 22.67 

Mean 82.9 Cfsm 1.11 In. 15.11

Peak discharge (base, 900 cfs). No peak above base.

* Discharge measurement made on this day.

t Change in contents, equivalent in cubic feet per second, in Shenipsit Lalce; furnished by Rockville Water & Aqueduct Co.

a No gage-height record; discharge estimated on basis of recorded range in stage, patterns of regulation, weather records, and records for Scantic River at Broad Brook.
230 CONNECTICUT RIVER BASIN

Salmon River near East Hampton, Conn.

Location. Lat 41°33 I 11", long 72 0 26'57", on right bank at Old Comstock Fridge, a short 

distance downstream from New London-Middlesex County line, 0.6 mile downstream from 

Dickinson Creek and 3^ miles southeast of East Hampton, Middlesex County.

Drainage area. 105 sq mi.

Records available. July 1928 to September 1957.

^

Gage. Water-stage recorder. Datum of gage is 69.50 ft above mean sea level, datum of 

Average discharge . 29 years (1928-57), 179 cfs.

Extremes . --Maximum discharge during year, 1,540 cfs Apr. 6 (gage height, 3.57 ft); maximum 

gage height, 3.73 ft Jan. 23, ice jam; minimum discharge, 2.9 cfs Aug. 20, 21 (gage 

height, 0.39 ft).

1928-57: 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 1021: 1929.

Rating tables, water year 1956-57, except periods of ice effect (gage 

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

Oct. 1 to Aug. 21 Aug. £2 to Sept. 30

0.4

.5 

.7

1.0

3.6

9.4

24

62

1.5 

2.0 

3.0 

3.4

187

370

1,020

1,390

0.4 

.5

.7

3.3

8.3

21

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

38

31

28

30

44

41

255

197

101

60

48

42

40

38

35

33

32

31

30

29

29

30

41

45

41

38

34

32

30

30

29

1,562

50.4

0.480

0.55

Nov.

77

101

136

92

64

54

49

48

54

46

40

41

48

45

41

39

36

163

190

113

85

217

204 

126

90

128

139

108

88

77

2,739

91.3

0.870

0.97

Dec.

68

73

64

73

*68

68

72

68

136

217

159

298

269

311

598

538

420

298

224

197

190

197

322 

310

298

244

197

190

197

178

168

6,710

216

2.06

2.38

Jan.

b!50

b!31

b!40

b!35

b!35

b!25

b!30

b!30

b!25

bl25

bl£0

bl!5

bllO

alOO

a90

b90

b90

b85

b85

b85

b90

b200

bl.120 

a515

a310

234

b!90

*b!87

181

172

b!55

5,650

182

1.73

1.99

Feb.

b!55

150

150

210

227

194

165

165

197

470

362

238

197

178

165

150

150

142

*142

134

120

116

ITS 

120

123

145

562

354

_

5,599

200

1.90

1.98

Mar.

252

230

230

197

175

165

175

197

368

595

£72

234

2O7

187

178

322

290

224

197

224

280

330

262 

220

187

178

168

162

156

150

159

6,951

224

2.13

2.46

Apr.

12S

295

*410

269

504

1.540

689

490

804

550

395

334

302

276

252

230

220

213

224

213

200

181

172

168

168

159

156

145

126

*115

9,726

324

3.09

3.45

May

106

101

101

99

99

92

85

79

75

70

66

72

75

73

148

113

81

72

70

101

150

IU6

*88 

92

72

57

54

56

48

42

38

2,581

83.3

0.793

0.91

June

36

36

45

40

34

32

31

29

27

25

23

22

22

21

19

18

18

15

15

25

20

16

14 

13

13

11

13

*13

14

13

673

22.4

0.213

0.24

July

12

9.4

8.8

7.7

8.8

11

8.8

*-3.2

5.3

7.7

8.2

7.1

6.5

13

11

8.8

7.1

5.9

5.3

4.8

4.2

3.6

5.3 

5.9

4.8

4.8

12

7.7

19

15

260.7

8.41

O.O80

0.09

Aug.

11

8.8

7.1

6.5

7.1

*5.9

5.9

a4.8

a4.2

3.6

5.9

7.1

4.8

a3.6

a!7

a!5

a8.0

4.8

a3.3

2.9

3.8

a8.3

a7.3 

a6.8

a9.6

14

14

9.0

8.3

7.3

6.8

232.5

7.50

0.071

O.O8

Sept.

6.8

11

11

5.8

*5.8

5.8

4.8

4.8

4.8

5.8

4.3

4.3

4.3

4.3

5.3

5.8

9.6

10

9.0

7.3

7.3

14

18

15

12

9.6

7.8

7.3

7.3

6.8

233.7

7.79

0.074

0.08

Calendar year 1956: Max 784 Min 9 Mean 186 Cfsm 1.77 In. 24.15

Water year 1956-57: Max 1,340 Min 2.9 Mean 118 Cfsm 1.12 In. 15.18

Peak discharge (base, 1,3OO cfs). --Jan. 23 (11 a.m.) 1,49O cfs (3.50 ft); Apr. 6 (7 a.m.) 1,540 cfs

(3.57 ft) .

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for nearby 

streams.

b Stage-discharge relation affected by ice.
CONNECTICUT RIVER BASIN

Eightmile River at North Plain, Conn.

Location.~Lat 41°26'30", long 72°20'00", 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 1957. 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 

daily. Datum of gage is 57.74 ft above mean sea level, datum of 1929. Prior to May 1, 

1939, staff gage at bridge 0.7 mile downstream at datum 12.17 ft lower.

Average discharge. 20 years, 39.9 cfs (adjusted to present site).

Extremes."Maximum discharge during year, 650 cfs Jan. 23 (gage height, 5.63 ft); minimum 

daily, 015 cfs July 26 Tgage height, 1.76 ft).

1937-57: Maximum discharge, 2,350 cfs Oct. 15, 1955 (gage height, 7.72 ft), from 

rating curve extended above 1,200 cfs on basis of computation of peak flow through highway bridge and over road; minimum observed, 0.05 cfs Sept. 12, 1944 (gage l°ight, 

1.60 ft).

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

which are fair.

Revisions (water years). WSP 1141: 1948. WSP 1331: 1940-4l(M) , 1943(M) , 1948(M) , 

1951(Mj, 1952-53(P).

Rabing table, water year 1956-57, except periods of Ice effect (gage 

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

1.9 

2.1 

2.5

2.0

6.2

19

3.0 

3.5 

4.0 

4.5

45

86

154

265

350

Discharge, In cubic feet per second, water year October 1956 to September 1957

Day

1

Z

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

Zl

zz

Z3

Z4

Z5

Z6

Z7

Z8

Z9

30

31

Itotal

Mean

Cfsm

In.

Oct.

7.3

6.8

6.0

5.7

975

6.8

59

26

18

14

a!2

10

9.9

9.3

8.7

7.9

7.6

7.0

6.2

6.0

6.0

6.2

a9.0

9.3

7.6

6.5

6.5

6.5

6.2

6.0

6.0

319.0

10.3

0.554

0.64

Nov.

22

22

17

14

12

11

9.9

a9.3

a9.3

a8.7

8.2

?70

9.6

8.7

8.4

8.2

8.4

54

38

24

22

52

38

28

22

38

30

25

22

20

608.7

20.3

1.09

1.22

Dec.

17

17

17

17

15

a!9

18

15

32

52

36

82

77

77

154

136

96

72

60

52

56

45

72

60

aSO

52

a45

43

42

a39

a37

1,612

52.0

2.80

3.23

Jan.

b34

b32

b32

a32

b31

29

a29

a29

a28

a27

26

a25

b24

a22

b20

a20

b20

a!9

a!9

bl8

a!9

a26

312

a2~28

102

77

60

*48

a45

43

38

1,514

48.8

2.62

3.02

Feb.

38

a36

38

52

48

43

39

38

43

91

68

52

48

41

38

36

34

32

32

a31

*30

28

27

26

27

30

107

68

_

1,221

43.6

2.34

2.44

Mar.

60

52

48

43

38

39

a38

38

72

68

52

48

42

39

36

60

48

41

38

a 48

64

64

52

44

*38

38

35

a34

32

31

28.

1,408

45.4

2.44

2.81

Apr.

28

79

a86

56

162

335

145

107

184

al!4

86

72

68

60

52

48

45

43

45

40

39

a37

36

34

*32

a34

34

32

28

26

2,187

72.9

3.92

4.37

May

24

22

20

20

18

a!8

17

15

15

a!4

13

17

15

15

M

30

Z2

19

a!8

25

*32

24

20

22

16

14

13

12

11

9.6

8.7

603.3

19.5

1.05

1.21

June

8.4

9.3

a8.7

7.9

6.8

6.5

6.2

a5.7

5.5

5.0

4.5

4.3

4.3

3.8

3.6

2.9

2.9

2.6

2.6

3.3

2.8

2.4

a2.0

1.9

2.0

1.9

 1.9

2.0

2.2

1,8

125.7

4.19

0.225

0.25

July

1.6

1.4

1.2

al.2

1.2

1.0

.9

*.9

.9

1.2

1.0

a. 9

.8

2.6

2.4

1.6

1.0

.9

a. 8

.15

.65

.65

1.2

.9

.65

a. 5

5.Q

2.6

1.9

2.4

2.4

43.10

1.39

0.075

0.09

Aug.

*2.0

1.8

1.3

1.4

2.0

1.4

1.0

.9

.8

.75

.9

1.0

.8

.65

2.2

2.2

1.0

.8

*.8

.75

.9

a2.6

2.2

1.4

2.4

4.5

3.8

2.2

1.8

1.6

1.6

49.45

1.60

0.086

0.10

Sept.

1.4

1.2

1.3

1.4

*1.3

1.3

1.2

1.2

1.2

.9

1.0

.9

.8

75

1.0

1.2

3.1

2.0

1.8

al.4

1.9

4.5

4.8

3.4

1.8

1.8

al.6

1.4

1.3

1.3

50.2

1.67

O.O9O o.io

Calendar year 1956 : Max 184 Mln 2.0 Mean 36.3 Cfsm 1.95 In. 26. 6O

Water year 1956-57 : Max 335 Mln O.5 Mean 26.7 Cfsm 1.44 In. 19.48

Peak discharge (base, 350 ofs). Jan. 23 (about 4 p.m.) 650 cfs (5.63 ft); Apr. 6 (abovt 1 a.m.) 

485 efs (5.2O 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.
232 CONNECTICUT RIVER BASIN

East Branch Elghtmlle River near North Lyme, Conn.

Location. La t 41°25'40", long 72°20'05" , on left bank at 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 5| miles upstream from mouth of Eightmile River.

Drainage area. 22.0 sq mi.

Records available. September 1937 to September 1957.

~Gage. Water-stage recorder. Datum of gage is 55.21 ft above mean sea level, datum of 

Average discharge. 20 years, 46.0 cf s .

Extremes . Maximum discharge during year, 470 cfs Jan. 23 (gage height, 3.52 ft); minimum, 

0.25 cfs Aug. 14 (gage height, -0.31 ft).

1937-57: 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 except those for periods of ice effect, which are fair, and no 

gage-height record, which are poor. Occasional regulation at low flow.

Rating tables, water year 1956-57, except periods of ice effect 

feet, and discharge, in cubic feet per second)

-0.31 -.3

-.2

-.1 

0

Oct. 1 to Jan. 23

0.25 

.3 

.9

1.6

2.6

0.1 

1.2

4.0

5.8

8.2

12

18

1.0 

1.5 

2.0 

2.5 

2.8

52

107

165

233

287

Jan. 23 to Sept. 4

1.0 52

1.5 116

2.0 182

2.9 325

Mote. Same as 

preceding table 

above l.O ft.

ge height, in

Sept. 4-30

-0.1 0.8

0.0 1.3

.2 2.6

.5 7.0

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

13

11

9.0

8.0

11

12

40

51

30

19

15

12

11

10

10

9.7

9.3

9.0

8.6

8.6

S.6

8.6

11

18

14

11

10

10

9.3

9.0

8.6

425.3

13.7

0.623

0.72

Nov.

33

48

34

25

20

17

16

15

15

13

12

12

13

12

12

12

12

46

64

*41

30

43

48

34

26

38

49

37

31

27

835

27.8

1.26

1.41

Dec.

23

22

23

24

22

25

27

25

37

68

54

82

100

97

172

162

134

95

73

64

61

59

75

82

79

67

55

52

52

48

43

2,002

64.6

2.94

3.39

Calendar year 1956: Max 173

Jan.

b41

b36

b31

31

33

32

32

34

34

b32

b31

b30

b29

b27

b25

b25

b24

b23

b23

b2I

b21

b32

276

241

122

82

66

*60

57

52

48

1,651

53.3

2.42

2.79

Feb.

47

45

41

57

70

59

50

47

50

112

106

62

51

46

44

42

43

39

38

37

*34

32

34

34

34

36

130

123

-

1,543

55.1

2.50

2.60

Mar.

74

64

64

57

49

46

46

4S

74

106

72

56

50

47

44

61

73

54

46

57

79

94

74

57

*48

46

44

42

40

39

37

1,788

57.7

2.62

3.02

Apr.

35

78

155

91

119

325

Joo

142

200

164

122

98

86

75

68

60

56

54

54

52

50

45

42

42

*39

41

43

38

35

11

2,640

88.0

4.00

4.46

May

28

26

25

24

23

23

22

20

19

18

17

21

23

22

68

56

34

27

25

2S

*38

30

25

26

22

19

17

16

14

12

11

779

25.1

1.14

1.31

June

10

10

10

10

9.0

8.2

7.7

7.2

6.5

5.8

5.6

5.3

5.1

4.7

4.4

3.9

3.6

3.2

3.0

3.2

2.7

2.5

2.4

2.3

2.3

2.2

2.3

2.2

2.0

1.9

149.2

4.97

0.226

0.25

July

1.7

al.5

al.3

al.3

al.3

al.l

al.O

al.o

al.l

al.4

al.2

al.O

a. 9

1.8

al.4

al.l

a. 9

a. 8

a. 7

a. 6

a. 5

a. 5

al.l

a. 7

a. 5

a^i

4.4

172

al.5

al.B

al.5

38.2

1.23

0.056

0.06

Aug.

"al.3

al.l

a. 9

a. 9

al.5

al.4

»1.1

a. 9

a. 7

a. 55

a. 4

a. 35

a. 3

*.25

2.3

2.5

al.B

al.2

*.9

a. 7

a. 8

2.3

al.6

al.2

1.8

4.2

6.8

4.0

2.7

2.3

2.1

50.65

1.63

0.074

0.09

Sept.

1.8

al.6

al.5

*1.5

*1.5

1.3

1.2

1.5

1.3

1.0

1.0

1.0

.9

.a

1.1

1.2

2.8

3.1

2.8

2.2

2.6

4.1

4.6

4.2

3.7

3.2

3.0

2.8

2.8

2.7

64.9

2.16

0.098

0.11

Min 2.5 Mean 43.4 Cfsm 1.97 In. 26.86

Water year 1956-57: Max 325 Min 0.25 Mean 32.8 Cfsm 1.49 In. ZO. 21

Peak discharge (base, 300 cfs).--Jan. 23 (7 p.m.) 47O cfs (3.52 ft); Apr. 6 (12:3O p.m.) 365 cfs

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records, engineers' notes and 

records for station on Eightmile River.

b Stage-discharge relation affected by ice.
CONNECTICUT RIVER BASIN 233

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, B 2/3 miles northeast of Pittsburg, N. 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 England 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-J miles northwest 

of Littleton, N. H., filled in April 1956, 4,970,000,000 cu ft; Comerford Station Pond, 

4| miles northeast of Bar-net, 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 Union 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 miles 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 of water 

for power, has usable capacity of 862,000,000 cu ft. Records collected by Geological 

Survey.

Surry Mountain Reservoir on Ashuelot 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. Records 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 Reservoir on Deerfield River at Davis Bridge, Vt., 5,060,000,000 cu ft. Records furnished by New England Power Co.

Quabbln Reservoir on Swift River, 3-J- 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 Rivers, 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.

Knightvllle 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 po'>f er development. The downstream order and usable capacity of each are as follows: Borden Brook 

Reservoir on Borden Brook, 3? miles south of Blandford. Mass., 344,000,000 cu ft; 

Cobble Mountain Reservoir on Westfield Little River, 6f miles west of Westfield, Mass., 

3,050,000,000 cu ft. Records furnished by Board of Water Commissioners, Springfield, 

Mass.

Otis Reservoir in Farmington River basin, lat 42°09'35", long 73°03'33", 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. Record* available, 

April 1913 to September 1957. 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 diverted 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", ij- 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 1957. 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.

50569Z O - 59 - 16
CONNECTICUT RIVER BASIN

Reservoirs in Connecticut River basin Continued

Barkhamsted, East Branch and Nepaug Reservoirs Continued.

Drainage area, 61.2 sqmi.Completed in 1919 for storage of water to compensate for 

water diverted from the river. Total capacity, 400,000,000 cu ft. Records available, 

August 1928 to September 1957. 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 1957. 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 

57'02", at Whigville, Hartford County, "Conn. Drainage area, 3.95 sqmi. Completed 

in 1908 for storage of water for domestic water supply. Total capacity, 8,650,000 

cu ft. Records available, July 1928 to September 1957. Records furnished by Board of 

Water Commissioners, New Britain, Conn.

Shenlpsit Lake on Hockanum River, lat 41°52'06", long 72°25'59", three-quarters of a mile 

east of Rockville, 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 

municipal 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 195". Stage records 

furnished by Rockville Water & Aqueduct Co.

Month-end usable contents, in .millions of cubic feet, water year October 1956 to September 1957

Date

Sept. 30, 1956. .............

Dec. 31. ...................

Peb . Z8 ....................

Apr. 30....................

May 31...... ..............

Aug. 31.............. ......

Sept. 30.. ..................

Oct. 31.. ..................

Dec. 31. ...................

Mar. 31.. ..................

July 31....................

AUK 31

Sept. 30.. ..................

Sept. 30, 1956..............

Mar. 31....................

Apr. 3O. ...................

Auff 31

Sept. 30.. ..................

May 31....................

Sept. 30.... ................

First and 

Second 

Connecticut 

Lakes

3,164.8

1,974.0

2,653.5

Sunapee 

Lake

Z5E

394

265

Quabbin 

Reservoirt

44,459

Otis 

Reservoir

438

Lake 

Francis

3,404.5

2,912.5

2,612.0

2,515.5

1,895.1

1,310.1

2,005.9

2,615.0

2,834.7

3,409.3

3,128.0

3,167.5

Surry 

Mountain 

Reservoir

0.2

.1

19.8

34.3

48.9

1.4

.8

.5

.1

Ludlow 

Reservoir

181.1

174.2

142.9

Barkhamsted, 

East Branch 

and Nepaug 

Reservoirs

493

,829

Moore Reservoir and 

Coraerford 

Station Pond

6,217.0

5,670.0

6,028.5

5,897.0

5,959.4

4,465.7

2,145.8

4,389.9

6,025.8

6,195.4

5,996.2

5,929.8

5,439.8

Birch 

Hill 

Reservoir

2.3

1.2

2.3

3.9

10. 0

7.5

5.1

2.7

3.6

2.0

1.3

1.2

1.3

Watershops 

Pond

0

0

0

49.0

51.6

45.8

46.3

45.8

43 9

41.0

39.6

Whigville 

Reservoir

.0

 

.4

.9

Union 

Village 

Reservoir

3.6

1.8

12.9

7.9

24.6

43.0

14.8

2.9

3.1

2.1

1.4

1.5

Tully 

Reservoir

0.1

.1

21.0

26.0

8.1

0

O

Knight-rille 

Reservoir

14.3

10.1

29 9

.1

Shenipsit 

Lake

558.1

Lakes and 

ponds in 

Mascoma 

River basin

838.6

729.0

824.7

964.4

931.9

664.5

594.6

784.6

931.9

942.5

870.4

730.9

Somerset 

and 

Harriman 

Reservoirs

5,221.0

4,406.1

4,561.0

4,752.2

4,397.7

3,368.3

2,421.7

5,896.4

6,054.2

4,577.8

Borden Brook 

and Cobble 

Mountain 

Reservoirs

1,690.1

t Affected by diversion from Ware River and diversion to Wachusett Reservoir ard Chicopee Valley 

aqueduct.
MENUNKETESUCK RIVER BASIN 235

Menunketesuck River near Clinton, Conn.

Location. Lat 41°18'10", long 72°31'00", on right bank at Fairy Dell, 100 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 1957.

Gage.--Water-stage recorder. Datum of gage is 23.64 ft above mean sea level, datum of 

1929.

Average discharge.--16 years, 22.0 cfs (adjusted).

Extremes (unadjusted for storage or diversion). Maximum discharge during year, 280 cfs 

Apr. 6 (gage height, 3.99 ft); no flow part of day July 24-29, Aug. 2-4, 18-21.

1941-57: Maximum discharge, 1,500 cfs 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, July and August 1957; minimum gage height, 0.48 ft Sept. 9-12, 1944.

Remarks.--Records excellent except those for June 4-17, Aug. 16, 22, 23, Sept. 22, 23, 

whTch are fair, and those for period of no gage-height record and those belo'* 2.0 cfs, 

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 Kelseytovm Reservoir as measured by venturi meter. During periods of low flew , diversions from Kelseytown Reservoir are compensated for by release of water from Killingworth Res3rvoir 

which is located about 2.5 miles upstream from Kelseytovm 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 b3comes necessary to draw upon it. Therefore, the daily discharge record for periods of low flow 

June 4 to Sept. 30 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 Kelseytovm Reservoir. Change in contents in Kelseytown 

Reservoir and draft on Killingworth Reservoir are determined from a continuous chart 

record of Kelseytown Reservoir water surface. No account is taken of evaporation from 

the reservoir surfaces. Flow at recording gage station regulated by Killing-rorth and 

Kelseytown Reservoirs and by diversion for domestic water supply from Kelseytovm 

Reservoir.

Cooperation.--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 1956 to September 1957

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

Mean

Cfsm

In.

Oct.

3.5

3.0

2.7

2.5

2.9

3.1

26

26

15

9.8

7.0

5.8

4.7

4.6

4.2

3.9

3.6

3.5

3.2

2.8

2.S

2.8

4.8

5.6

4.4

3.9

3.7

3.3

3.0 

3.3

3.4

178.8

5.77

0.497

0.57

Nov.

15

23

16

13

9.9

8.6

7.0

7.0

7.5

6.9

5.9

6.0

6.0

5.8

5.4

5.5

5.6

25

30

*18

15

22

22

17

14

19

22

17

15

14

404.1

13.5

1.16

1.29

Dec.

12

11

11

11

11

12

15

14

25

49

32

*54

58

62

122

96

71

52

40

35

33

32

45

43

44

35

29

28

28

29 

22

1,161

37.5

3.23

3.72

Jan.

21

17

16

15

15

15

16

16

15

16

16

15

15

12

10

12

12

12

12

12

12

15

142

loo

50

36

30

*26

25

23 

20

769

24.8

2.14

2.47

Feb.

19

19

18

27

35

29

24

24

28

63

51

35

26

24

22

20

20

18

18

18

*16

15

15

15

15

15

I±

54

-

757

2.70

2.33

2.43

Mar.

41

36

33

29

26

24

23

26

45

55

39

32

28

24

22

32

34

24

23

31

35

38

32

24

*21

20

20

18

18

17 

16

886

28.6

2.47

2.85

Apr.

15

49

87

47

69

222

104

66

90

71

61

I 2

38

32

29

26

24

23

24

22

21

18

18

18

*18

17

17

16

15

15

1,302

43.4

3.74

4.17

May

12

11

11

10

10

9.5

9

8.5

8

7.5

7.5

8

8

8

50

30

20

17

15

20

28

20

*16

44

26

18

14

12

9.9

8 . 3 

1^3

483.5

15.6

1.34

1.54

June

JL5

7.5

7.0

6.0

5.4

4.9

4.5

4.0

3.7

3.4

3.2

3.0

2.8

2.6

2.5

2.3

2.0

1.8

1.6

1.7

1.5

1.4

1.4

1.3

1.3

1.3

*JU1

1.2

1.2

1.2

90.4

3.01

0.259

0.29

July

1*1

1.0

.9

1.0

.9

.8

.8

.7

*.7

.6

.6

.5

.5

1.0

.8

.7

.6

.5

.5

.4

.4

^

.6

.4

.3

.3

1.1

.9

.7

1.0

.9

21.5

0.69

0.059

0.07'

Aug.

0.8

.7

.6

.5

1.5

1.0

*.7

.6

.6

.5

.8

.7

.6

.5

1.1

2.2

1.3

.9

.7

.6

1.4

3.8

2.1

1.1

1.5

1.7

2.6

2.0

1.7

1.5

1.4

37.7

1.22

0.105

0.12

Sept.

1.2

1.0

.9

 1.0

.9

.8

.7

.8

.7

.6

.7

.7

.6

^5

.5

.7

1.5

1.3

1.1

1.0

1.3

2^2

2.2

1.9

1.6

1.4

1.2

1.1

1.0

.9

32.0

1.07

0.092

0.10

Calendar year 1956: Max 137 Min 0.9 Mean 21.3 Cfsm 1.84 In. 25. OO

Water year 1956-57: Max 222 Mln O.3 Mean 16.8 Cfsm 1.45 In. 19.62

Peak discharge (base, 2OO cfs, unadjusted for storage or diversion). Jan. 23 (4 p.m.) 25O cfs

(5.79 ft); Apr. 6 (8 a.m.) 28O cfs (3.99 ft). _________

* Discharge measurement made on this day.

Note. No gage-height record Apr. 25 to May 20j discharge estimated on basis of records for nearby 

streams.
QUINNIPIAC RIVER BASIN

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 Norton 

Brook.

Drainage area. 109 sq mi.

Records available . October 1930 to September 1957.

Gage. Water-stage recorder and timber control. Datum of gage is 20.24 ft above mean sea 

level, datum of 1929.

Average discharge. 27 years, 207 cfs.

Extremes. Maximum discharge during year, 890 cfs Apr. 7 (gage height, 4.48 ft); minimum 

observed, 29 cfs Aug. 10, 21 (gage height, -0.16 ft).

1930-57: 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; minimum observed gage height, that of Aug. 10, 21, 1957.

Remarks. Records excellent except those for periods of twice-daily gag^ readings, which 

are good, and those for periods of no gage-height record, which are fair. Low flow 

regulated by mills upstream. Records of chemical analyses and tempe"atures for the 

water year 1957 are given in WSP 1520.

Revisions (water years). WSP 781: Drainage area. WSP 851: 1933, 193". 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 table, water year 1956-57 (gage height, in feet, and 

discharge, in cubic feet per second)

-0.3 

+ .4

1.0

26

68

117

2.0 

3.0 

4.2

286 

53O 

815

Discharge, in cubic feet per second, water year October 1956 to September 1957

Day

l

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

3O

31

Total

Mean

Cfsm

In.

Oct.

74

69

68

70

79

76

16O

124

97

79

72

69

68

67

68

67

66

66

64

64

63 

63

71

74

68

64

64

62

62

62

-64

2,284

73.7

O.676

0.78

Nov.

164

183

154

117

*98

89

81

82

92

86

76

74

81

78

74

12.

72

185

189

135

108 

2O4

183

129

106

111

115

120

228

126

3,612

120

1.10

1.23

Dec.

93

86

85

87

86

85

84

81

131

173

158

194

198

233

308

355

380 343"

308

216

189 

189

252

259

248

222

189

180

191

193

162

5,958

192

1.76

2.03

Jan.

153

128

125

126

125

118

119

120

120

126

118

113

117

106

98

96

94

94

90

90

98 

134

409

430

269

200

168

156

153

145

139

4,577

148

1.36

1.57

Feb.

137

137

131

162

193

*165

154

153

209

592

331

218

176

160

153

146

142

134

134

132

124 

124

120

122

119.

140

392

297

4,997

178

1.63

1.70

Calendar year 1956 : Max 705 Min 59

Mar.

216

198

208

187

168

160

159

173

254

261

204

182

171

164

158

324

331

237

189

*194

/ 216 

224

208

187

165

168

152

149

143

139

151

6,017

194

1.78

2.05

Apr.

126

206

276

232

405

790

815

63O

655

605

4 SO

380

343

286

265

240

224

220

214

2OO

191 

180

170

*165

168

171

173

162

150 '142

9,264

3O9

2.83

3.16

May

135

125

12O

116

114

112

108

106

88

86

84

82

82

96

173

147

112

98

95

124

m123

122

106

94

90

92

*82

78

74

3,389

109

1.00

1.15

June

7O

70

76

74

70

67

64

62

60

59

58

57

56

55

54

53

52

52

67

65

*56 

53

51

49

48

55

82

70

76

62

1,843

61.4

0.563

0.63

Jlly

54

50

46

44

47

43

45

43

41

40

39

38

48

51

45

41

38

36

35

34

34 

37

45

41

*39

35

34

32

47

57

82

1,341

43.3

C.397

O.46

Aug.

63

44

41

42

48

40

34

39

36

32

30

41

38

36

39

39

32

31

37

37

64 

88

6O

48

67

~Sl 180

61

46

43

35

1,565

50.5

0.463

0.53

Sept.

32

35

36

45

*46

38

42

38

44

42

44

42

41

44

39

41

41

53

55

48

44 

44

48

53

45

46

46

36

38

46

1,292

43.1

O.395

0.44

Mean 197 Cfsm 1.81 Ir . 24.63

Water year 1956-57 = Max 815 Min 3O Mean 126 Cfsm 1.16 Ir . 15.73

Peak discharge (base, 900 cfs). No peak above base.

* Discharge measurement made on this day.

Note. No gage-height record Oct. 14-22, 26-31, Jan. 16-20, May 10-14, May 31 to June 26, June 30 

to July 23, Aug. lj discharge estimated on basis of recorder graph, weather records, and records'for 

nearby streams. Period July 24 to Sept. 30, except Aug. 1, 22, 26, 27, based on twice-daily staffgage readings.
HOUSATONIC RIVER BASIN 237

East Branch Housatonic River at Coltsville, Mass.

Location. Lat 42°28'10", long 73°11'49", 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 1957. 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, Saturn of 

1929.

Average discharge. 21 years, 116 cfs (adjusted for diversion).

Extremes. Maximum discharge during year, 1,120 cfs Jan. 23 (gage height, 5.70 ft); minimum daily, 13 cfs Sept. 2.

1936-57: 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.

Maximum stage known since at least 1755, that of Sept. 21, 1938.

Remarks. Records good. Plow regulated by powerplants above station. Diversior above 

station from Cleveland Brook Reservoir for municipal supply of Pittsfield sirce 

May 1950.

Revisions (water years). WSP 851: 1936(M) .

Rating table, water year 1956-57 (gage height, in feet, 

and discharge, in cubic feet per second)

1.9 

2.1 

2.3 

2.5

3.0 

3.5 

4.0 

5.0

155

267

412

800

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

57

54

57

67

99

71

109 

123 

*84

68

64

60

56

52

54

46

43

42

43

38

37

44

57

72

58

46

40

39

47

42

44

1,813

58.5

11.5

Nov.

72

134

139

79

65

57

56 

*60 

74

66

39

54

70

61

53

52

51

51

55

50

69

373

210

93

59

66

70

64

60

57

2,459

82.0

10.9

Dec.

49

46

54

52

52

55

67 

82 

80

78

62

151

*153

118

93

122

141

112

80

81

76

77

100

118

205

151

109

105

93

70

73

3, 905

93.7

12.0

Jan.

69

68

70

62

69

53

64 

64 

63

64

59

55

50

60

49

53

*52

48

47

40

49

73

756

414

216

151

129

129

116

112

105

3,409

110

12.6

Feb.

107

103

90

105

100

95

93 

89 

90

95

98

86

84

80

79

74

72

76

75

73

73

67

68

64

76

105

312

202

-

2,731

97.5

13.1

Mar.

127

94

76

72

73

64

66 

68 

70

63

63

66

79

127

165

260

223

147

118

103

98

107

103

109

104

95

 90

80

78

69

CQ32.

3,116

101

12.3

Apr.

66

119

141

88

94

247

252 

165 

129

116

124

135

161

149

127

112

120

98

98

93

82

91

74

65

61

62

56

38

46

44

3,253

108

12.8

May

*35

36

35

33

25

43

32

P

27

108

205

155

105

173

114

70

64

54

133

242

132

91

84

69

63

77

72

65

33

52

2,487

80.2

11.9

June

36

40

62

44

37

32

63 

50 

36

31

29

*28

29

25

29

28

28

29

29

44

35

27

17

25

20

21

22

22

21

18

957

31.9

12.3

July

32

27

22

17

27

27

20 

22 

22

22

22

21

20

18

20

19

20

18

17

18

16

16

 16

18

18

17

16

15

14

TA-lo

21

616

19.9

12.6

Aug.

18

16

15

15

20

19

15 

15 

15

15

14

TZ

17

18

18

18

17

15

15

16

24

14

15

18

16

16

17

18

17

18

18

516

16.6

11.8

Sept.

15

13

14

17

18

19

19 

17 

23

18

19

21

26

41

30

31

41

37

33

32

32

29

76

42

35

34

34

33

29

33

861

28.7

12.4

Adjusted for diversion

Mean 

Cfsm 

In.

70.0 

1.23 

1.41

92.9 

1.63 

1.82

Calendar year 1956: 

Water year 1956-57:

106 

1.86 

2.13

123 

2.15 

2.47

111 

1.94 

2.02

113 

1.98 

2.28

121 

2.12 

2.37

92.2 

1.61 

1.86

Observed

Max 1,130 Mln 14 Mean 105 

Max 756 Mln 13 Mean 68.8

44.2 

0.774 

0.86

32.5 

0.569

0.66

28.4 

0.497 

0.57

41.1 

0.720 

0.80

Adjusted

Mean 117 Cfsm 2.05 In. 27.90 

Mean 81.0 Cfsm 1.42 In. 19.25

Peak discharge (base, 1,150 cfs). Mo peak above base.

* Discharge measurement made on this day.

t Diversion above station from Cleveland Brook Reservoir for municipal supply of Pittsfield, 

equivalent in cubic feet per second. Records furnished by city of Pittsfield.
238 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 north of Great 

Barrington, Berkshire County.

Drainage area. 280 sq mi.

Records available . May 1913 to September 1957.

Gage. Water-stage recorder. Datum of gage is 683.04 ft above mean sea level, datura of 

1929. Prior to Oct. 1, 1931, staff gage at same site and datum.

Average discharge. 44 years, 529 cfs.

Extremes. Maximum discharge during year, 2,240 cfs Jan. 23 (gage height, 6.06 ft); minimum daily, 26 cfs Aug. 17.

1913-57: Maximum discharge, 12,200 cfs Jan. 1, 1949 (gage height, 12.08 ft), from 

rating curve extended above 5,300 cfs on basis of computations of flow over dams at 

gage heights 11.72 and 12.08 ft; minimum daily, 1.0 cfs Oct. 18, 1914.

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

which are fair. Flow regulated by powerplants 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 1956-57, except periods of ice effect (gage 

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

(Shifting-control method used Feb. 3, 7-10, 13-26, 

Mar. 3, 5-14, 31, Apr. l)

1.8 

2.1 

2.5 

3.0 209

3.5 

4.0 

5.0 

6.0

407

735

1,500

2,200

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

321

282

232

225

288

327

243

409

*346

294

253

262

242

156

274

215

180

197

155

214

126

211

204

275

269

242

242

171

258

231

203

7,547

243

0.868

1.00

Nov.

246

330

444

329

369

294

279

304

*274

226

157

293

252

263

276

235

256

219

335

269

280

749

1,100

780

443

474

423

384

379

351

11,013

367

1.31

1.46

Dec.

309

253

343

327

305

301

326

351

348

482

404

499

*712

668

585

564

803

712

552

484

441

460

495

622

890

930

712

600

539

439

388

15,844

511

1.82

2.10

Jan.

b420

b400

343

374

374

292

368

351

356

338

326

321

b270

b340

272

287

*298

281

251

218

332

341

1,480

1,980

1,540

1,010

682

b640

592

559

507

16,143

521

1.86

2.14

Feb.

507

478

403

501

460

434

418

418

407

413

513

434

388

384

369

365

284

386

369

356

*351

338

329

 363 266

384

756

866

_

11,940

426

1.52

1.59

Mar.

690

532

425

461

407

384

374

374

398

346

411

379

384

431

545

826

930

842

675

592

578

559

545

484

547

507

482

*472

458

434

545

15,817

510

1.82

2.10

Apr.

427

438

585

545

539

1,020

1,550

1,210

1,050

922

842

850

922

826

802

698

668

660

630

569

519

569

507

434

393

407

398

292

424

343

19,819

661

2.36

2.63

May

317

*298

257

286

192

298

282

222

209

189

340

576

724

57 E

585

608

484

402

302

474

718

765

652

712

615

409

488

428

347

327

349

13,427

433

1.55

1.78

June

299

231

413

326

264

260

246

356

180

262

218

*194

197

184

195

170

153

156

163

195

200

170

124

T40

154

151

154

160

147

168

6,230

208

0.743

0.83

July

162

158

148

146

158

137

140

97

168

148

125

142

140

124

147

129

112

118

118

107

68

123

81

113

107

111

97

*79

127

106

178

3,914

126

0.450

0.52

Aug.

131

116

126

173

202

195

100

106

94

94

62

allO

allO

60

83

27

26

31

103

73

118

110

100

102

74

141

96

94

78

108

107

3,150

102

0.364

0.42

Sept.

78

46

158

130

129

116

104

80

109

113

122

.107

99

96

87

156

156

160

170

133

159

134

141

 271 325

179

161

162

87

220

4,188

140

0.500

0.56

Calendar year 1956 : Max 4,180 Mln 54 Mean 538 Cfam 1.92 in. 26.14

Water year 1956-57 : Max 1,980 Mln 26 Mean 354 Cfsm 1.26 In. 17.13

Peak discharge (base, 2,400 cfs). No peak above base

* 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 East Branch Housatonic River at Coltsville. 

b Stage-discharge relation affected by lee.
HOUSATONIC RIVER BASIN 

Green River near Great Barrington, Mass.

23g

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, li miles west of Great 

Barrington, Berkshire County, and 3 miles upstream from mouth.

Drainage area. 52.5 sq mi.

Records available. --October 1951 to September 1957.

Gage. Water-stage recorder. Altitude of gage is 690 ft (from topographic map).

Average discharge. 6 years, 91.1 cfs.

Extremes .--Maximum discharge during year, 683 cfs Jan. 23 (gage height, 4.88 ft); minimum, 

4.1 cfs Aug. 24-26, 28-30.

1951-57: Maximum discharge, 1,790 cfs Apr. 17, 1956 (gage height, 7.65 ft), from 

rating curve extended above 680 cfs; minimum, 3.0 cfs Sept. 2-5, 1953.

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

Rating tables, water year 1956-57, except periods of ice effect (gage 

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

Oct. to Nov. 8

12

34

Nov. 9 to Sept. 30

2.2 

2.4

2.7 82

2.1

2.2 

2.6 

2.9

3.4

10

108

3.2 

3.5 

4.0 

5.0

180

255

390

730

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

22

20

19

25

24

27

32

*30

26

24

22

20

19

18

18

16

16

14

13

12

12

17

25

22

21

19

18

16

14

14

617

19.9

0.379

0.44

Nov.

24

34

68

56

50

44

40

44

*52

44

39

39

43

40

39

36

33

38

36

35

44

260

165

120

28

96

94

81

74

68

1,934

64.5

1.23

1.37

Dec.

60

58

58

56

55

5355"

56

68

62

60

100

*106

100

100

131

150

131

106

106

104

108

158

172

248

195

170

160

150

120

105

3,361

108

2.06

2.38

Jan.

100

83

80

80

68

64

62

59

56

53

48

51

50

44

40

36

*35

34

3T

34

37

55

*464

250

182

158

136

120

110

100

86

2,809

90.6

1.73

1.99

Feb.

S5

80

73

73

68

64

62

59

62

85

70

55

53

51

48

46

44

42

41

39

*35

36

39

39

41

50

150

92

1,682

60.1

1.14

1.19

Mar.

81

74

68

62

58

56

58

60

68

65

56

60

66

81

104

200

162

136

122

117

110

108

108

100

92

88

86

*81

78

74

68

2,747

88.6

1.69

1.95

Apr.

65

88

90

80

115

345

315

265

258

232

228

248

260

228

198

178

165

153

141

129

115

104

96

90

81

78

73

68

65

59

4,610

154

2.93

3.27

May

53

*51

50

46

42

41

39

38

35

34

66

96

83

73

85

68

60

56

56

94

138

98

90

158

113

94

86

80

68

60

53

2,204

71.1

1.35

1.56

June

4S

56

65

50

44

41

50

48

39

35

32

*29

26

24

25

22

20

18

17

26

21

16

16

14

13

14

13

10

12

16

860

28.7

0.547

0.61

July

19

IT

12

11

12

13

10

11

10

8.9

8.0

8.9

8.0

7.2

8.0

7.2

7.2

6.5

5.8

5.2

5.2

6.5

6.5

5.8

5.8

5.8

4.6

4.6

8.9

*10

17

273.6

8.83

0.168

0.19

Aug.

16

11

10

11

10

10

8.9

8.0

8.0

7.2

7.2

7.2

6.5

6.5

6.5

5.8

5.8

5.2

5.2

5.2

5.2

5.2

4.6

4.6

4.1

5.8

5.2

*4.1

4.1

5.8

5.2

215.1

6.94

0.132

0.15

Sept.

4.6

4.6

4.6

4.6

4.6

4.6

4.6

5.2

4.6

4.6

4.6

4.6

5.2

4.6

4.6

5.2

5.8

578

5.8

5.8

5.8

5.8

5.8

4.6

4.6

4.6

4.6

4.6

4.6

5 2

148.8

4.96

0.094

0.11

Calendar year 1956 : Max 1,060 Min 4.7 Mean 83.9 Cfsm 1.60 In. 21.77

Water year 1956-57 : Max 464 Mln 4.1 Mean 58.8 Cfsm 1.12 In. 15.21

Peak discharge (base, 750 cfs).--No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Dec. 30 to Jan. 5, Jan. 10-22, 24, Feb. 3, 12, 21, 

Mar. 5.
240 HOUSATONIC RIVER BASIN

Blackberry River at Canaan, Conn.

Location. Lat 42°01'26", long 73 C20'32", on right bank downstream from highway bridge on 

U. S. Highway 44, 0.7 mile southwest of Canaan, Litchfield County, an1 l£ miles upstream from mouth.

Drainage area. 48.2 sq mi.

Records available.--July 1949 to September 1957.

Gage. Water-stage recorder. Datum of gage is 645.72 ft above mean sea level, datum of 

1929.

Average discharge. 8 years, 87.2 cfs.

Extremes. Maximum discharge during year, 880 cfs Jan. 23 (gage height, 6.28 ft); minimum, 

2~72~c'fs July 25, 26, 27, 28 (gage height, 1.25 ft).

1949-57: 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, July 25, 26, 27, 28, 1957; minimum gage height, 

1.12 ft Aug. 28, 1949; minimum daily discharge, 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 mile's upstream, adjusted 

for intervening drainage area).

Remarks. Records excellent except those for periods of ice effect, whic1? are good, 

frequent regulation at low flow.

Rating tables, water year 1956-57, except periods of ice effect (gage 

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

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

1.6

1.7 

2.0 

3.0 

3.6

34

142

230

1.2

1.3 

1.5 

1.7 

2.0

1.1

3.2

9.7

19

41

3.0 

4.0 

5.0 

5.5

142

305

505

610

Discharge, In cubic feet per second, water year October 1956 to September 1957

InDay

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

Cfsm

In.

Oct.

18

17

14

15

24

16

29

28

18

14

12

12

11

11

11

10

9.9

9.9

9.6

^6

9.6

9.6

30

*41

26

19

15

13

12

11

12

497.2

16.0

0.332

0.38

Nov.

102

73

127

78

46

36

30

28

30

25

21

22

28

23

EO

19

li

48

42

*32

51

222

TT7

b66

b44

51

55

46

40

37

1,577

52.6

1.09

1.22

Dec.

28

28

30

33

32

32

37

39

82

74

61

174

130

102

94

148

140

111

b77

75

73

87

166

146

196

128

98

89

85

b70

b60

2,725

87.9

1.82

2.10

Jan.

b50

t>45

b45

43

43

38

37

37

*35

36

b34

b36

36

b30

b34

b31

b31

b28

b28

b28

b27

b90

b610

253

127

90

72

61

66

56

51

2,228

71.9

1.49

1.72

Feb.

55

51

51

55

49

47

47

48

49

108

74

*49

44

43

39

36

35

35

37

30

30

29

30

32

37

59

170

100

_

1,469

52.5

1.09

1.14

Mar.

b73

b58

57

b47

b38

b37

*39

46

63

53

b43

48

59

74

88

170

TT7

85

71

64

65

67

68

63

57

53

52

51

49

47

43

1,945

62.7

1.30

1.50

Apr.

41

112

114

75

118

345

259

173

158

134

134

150

146

119

98

86

78

76

106

92

79

*69

64

62

57

66

63

57

51

46

3,228

108

2.24

2.50

May

42

39

37

36

35

34

31

29

27

*24

49

59

*51

43

55

41

33

30

32

67

93

56

47

40

32

29

29

39

30

25

22

1,236

39.9

0.828

0.95

June

18

28

45

30

23

20

22

21

18

14

13

12

11

10

9.7

9.0

8.3

7.5

7.2

*6.8

6.5

5.8

5.5

5.5

5.5

7.2

10

16

12

11

418.5

14.0

0.290

0.32

July

11

7.9

6.1

5.5

5.5

5.2

4.6

4.6

4.6

4.6

4.6

4.1

4.6

5.2

*4.6

4.1

3.5

3.2

3.0

2.8

2.8

2.8

2.8

2.8

2.6

2.6

2.4

zTe

22

T7

11

170.7

5.51

C.114

0.13

Aug.

7.2

5.5

4.6

6.5

11

6.8

5.2

4.6

4.4

4.1

6.1

5.2

4.4

4.1

3.5

4.1

3.2

2.8

2.8

3.5

3.8

4.9

4.6

3.8

3.5

7.2

6.1

4.6

3.8

4.1

4.4

150.4

4.85

0.101

0.12

Sept.

3.5

3.2

3.2

2.8

3.2

*3.0

2.8

2.8

2.8

2^6

3.0

3.2

3.2

3.0

3.2

4.1

"7.5 16

5.2

4.4

4.4

4.6

6.8

6.8

5.5

4.4

4.1

4.1

4.4

4.4

132.2

4.41

0.091

0.10

Calendar year 1956: Max 847 Min 6.8 Mean 79.9 Cfam 1.66 Ir. 22.55

Water year 1956-57: Max 610 Min 2.4 Mean 43.2 Cfam 0.896 In. 12.18

Peak discharge (base, 800 cfs). Jan. 23 (7:30 a.m.) 88O cfs (6.28 ft).

* Discharge measurement made on this day. 

b Stage-discharge relation affected by ice.
H00SATONIC RIVER BASIN 241

Housatonlc River at Palls Village, Conn.

Location. La t 41°56'56", long 73°22'05", on left bank 0.6 mile downstream from hydroelectric plant of Connecticut Power Co. at Falls Village, Lltchfleld County, 2 miles 

downstream from Hollenbeck River, and at mile 75.3.

Drainage area. 632 sq ml.

Records available . July 1912 to September 1957.

Sage. Water-stage recorder. Datum of gage Is 522.34 ft above mean sea level, datum of 

i929 (levels by Corps of Engineers).

Average discharge. 45 years, 1,078 cfs.

Extremes . --Maximum discharge during year, 3,350 cfs Jan. 24 (gage height, 8.00 ft; backwater from Ice); maximum gage height, 8.08 ft Jan. 24 (backwater from Ice); irlnimum discharge, 51 cfs Sept. 10; minimum daily, 93 cfs Sept. 9.

1912-57: Maximum discharge, 23,900 cfs Jan. 1, 1949 (gage height, 22.9 ft, from 

f loodmarks ) ; practically no flow at times when powerplant was shut down; minimum dally, 

24 cfs Oct. 15, 1914, Sept. 18, 1932.

Remarks . Records excellent except those for periods of Ice effect, which are good. 

flow completely regulated by powerplant of Connecticut Power Co.

Revisions . WSP 781: Drainage area.

Rating table, water year 1956-57, except period of Ice effect (gage 

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

Low

0.8 

1.5 

3.0 

6.9

252

955

3,28O

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

Itrtal

Mean

Cfsm

In.

Oct.

369

486

406

284

416

476

518

455

656

506

434

372

414

381

298

392

337

298

288

289

213

27^

4O1 

*455

513

398

471

324

252 

394

341

12,109

391

O.619

0.71

Nov.

645

695

901

952

662

698

533

494

573

502

417

376

514

478

464

508

442

572

500

590

552

1,100

1J650

1,180

913

937

875

785

736

21,944

731

1.16

" 1.29

Dec.

664

579

565

654

638

554

659

648

818

922

898

1,130

1,350

1,280

1,220

1,400

1,760

1,820

1,38O

1,190

1,13O

1,090

1,460 

1,450

1,880

1.990

1,82O

1,59O

1,380

1,150 

88O

35,949

1,160

1.84

2.12

Jan.

960

820

730

79O

870

810

720

780

*770

730

640

680

680

510

520

490

480

570

510

470

510

730

1,900 

5.250

3,050

2,500

1,700

1,600

1,300

1,200

1,100

32,370

1,O44

1.65

1.90

Feb.

1,O50

1,000

890

880

950

880

860

840

840

1,050

1,140

*1,060

867

796

7O2

679

764

569

674

645

582

578

'588 

562

552

718

1,330

1.62O

-

23,606

843

1.55

1.38

Mar.

1,450

1,160

964

S04

788

742

718

679

854

836

*695

799

753

876

1,070

1,510

1.820

1,760

1,480

1,290

1,190

1,160

1,160 

1,090

1,050

1,000

968

958

898

857 

844

32,203

1,039

1.64

1.89

Apr.

716

970

1,240

1,140

1,250

2,090

5. OOP

2,720

2,530

2,290

2,110

2.05O

2.05O

2,050

1,820

1,700

1,570

1,430

*1,440

1,56O

1,280

1,150

1,120 

1,020

1,020

880

914

89O

750

770

45,30O

1,510

2.39

2.67

May

664

596

575

520

515

456

519

508

424

420

572

776

1,140

1,040

995

1,000

898

746

652

885

*1,510

1.520

1,200 

1,050

1,110

874

763

797

720

592 

556

24,191

780

1.23

1.42

June

528

471

566

7O6

47T

430

458

464

592

335

381

352

312

341

298

295

524

228

262

278

282

286

242 

252

19O

208

252

262

266

244

10,574

552

0.557

-O.62

July

289

224

224

236

222

218

168

200

172

234

195

168

194

238

*178

172

170

172

172

170

168

202

172 

172

175

182

172

172

ISO 

185

175

5,969

193

O.305

0.35

Aig.

175

195

202

218

265

3OO

*282

174

142

159

182

119

202

159

128

121

119

114

116

119

121

119

146 

148

140

154

19O

149

164 

121

209

5,152

166

C.265

0.30

Sept.

168

121

121

408

237

*222

19O

168

93

109

148

118

103

105

209

172

240

227

252

146

159

165

146 

296

406

260

22O

256

158 

141

5,742

191

O.3O2

0.34

Calendar year 1956: Max 8.59O Mln 130 Mean 1,O92 Cfsm 1.73 In. 23.5*

Water year 1956-57: Max 3,250 Mln 93 Mean 699 Cfsm 1.11 In. 14.99

Peak discharge (base, 3,6OO cfs). No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Dec. 3O to Feb. 10.
242 HOUSATONIC RIVER BASIN

Tenmile River near Gaylordsville, Conn.

Location. Lab 41°39'32", long 73°31'44", on right bank 0.1 mile downstream from Deuel 

Hollow Brook, 1.2 miles upstream from New York-Connecticut State line, 1.7 miles upstream from mouth, and 2| miles northwest of Gaylordsville, Litchfield County.

Drainage area.--204 sq mi.

Records available.--October 1929 to September 1957. Monthly discharge only for 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. 28 years, 298 cfs.

Extremes. Maximum discharge during year, 1,230 cfs Apr. 6 (gage height, 4.28 ft); minimum, 

5 cfs Sept. 8 (gage height, 0.65 ft); minimum daily, 9 cfs Sept. 7-11, 28-30.

1929-57: 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, that of Sept. 8, 1957; minimum gage height, 0.52 ft Sept. 24, 26, 1939; minimum daily, 9 cfs Sept. 23-26, 1939, Sept. 7-11, 28-30, 1957.

Remarks. Records excellent except those for periods of ice effect and backwater from 

aquatic growth, which are good. Infrequent regulation at low flow.

Revisions (water years).--WSP 1201: 1939.

Rating table, water year 1956-57, except periods of ice effect and 

backwater from aquatic growth (gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Oct. 1-31)

0.5 

.6

1.0

1.5 

2.0 

3.0 

4.0

135

255

600

1,070

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

72

65

59

55

60

62

69

86

74

62

56

51

48

46

47

46

44

42

40

40

39

39

55

86

78

68

60

55

50

47

56

1,757

56.7

0.278

0.32

Nov.

274

310

271

229

187

164

146

135

129

119

110

106

106

104

99

95

92

153

192

168

162

307

307

250

209

199

202

192

178

168

5,363

179

0.877

0.98

Dec.

148

142

142

146

142

139

139

139

185

239

214

288

302

325

552

708

752

640

520

465

446

461

685

640

752

662

564

520

500

b424

b356

12,337

398

1.95

2.25

Jan.

b340

b290

b302

b274

b263

b234

b242

b229

224

b219

b!87

242

224

b!78

*b!57

blBO

b!70

b!60

b!50

b!50

b!50

blBO

b550

620

b442

b362

b316

296

288

b268

b250

8,137

262

1.28

1.48

Feb.

366

250

222

255

250

237

237

239

269

775

600

b379

b334

»310

288

271

255

245

242

234

209

209

209

212

214

242

476

372

-

8,301

296

1.45

1.51

Calendar- year 1956: Wax 7,310 Min 24

Mar.

319

299

299

274

247

237

2^9

250

319

356

290

*288

290

296

304

490

472

406

375

372

375

366

340

319

296

288

282

274

260

250

237

9,709

313

1.53

1.76

Apr.

224

332

406

340

465

1,070

1,070

895

1,070

995

870

775

730

662

588

532

492

461

472

442

406

*362

337

325

302

313

316

304

279

247

16,082

536

2.63

2.93

May

226

214

204

199

192

178

168

162

148

139

135

153

175

153

175

168

148

139

153

263

 366

224

212

192

159

139

133

133

125

111

106

5,392

174

0.853

0.98

June

97

97

113

106

94

86

81

80

72

66

63

60

58

55

52

50

51

47

42

40

38

37

34

33

32

32

31

31

31

31

1,740

58.0

0.284

0.32

July

29

27

24

23

21

20

20

19

19

18

17

17

16

21

20

18

15

15

13

13

12

12

12

12

i!

11

12

13

16

26

30

552

17.8

0.087

0.10

Aug.

28

*2l

19

19

19

17

16

16

16

16

17

17

17

16

16

16

16

15

14

15

18

25

18

15

13

22

18

15

13

12

12

527

17.0

0.083

0.10

Sept.

11

11

11

11

10

10

9

9

9

9

*9

10

10

10

11

13

15

14

14

12

12

12

12

12

11

11

10

9

9

9

325

10.8

0.053

0.06

Mean 302 Cfsm 1.48 lr , 20.16

Water year 1956-57: Max 1,070 Min 9 Mean 192 Cfsm 0.941 Ir . 12.79

Peak discharge (base, 1,400 cfs).--No peak above base.

* Discharge measurement made on this day.

b Stage-discharge relation affected by ice.

Note. Backwater- from aquatic growth June 16 to Sept. 30.
HOUSATONIC RIVER BASIN 243

Housatonic River at Gaylordsville, Conn.

Location. La t 41°39'll", long 73°29'25", on left bank 0.4 mile downstream from hydroelectric plant of Connecticut Light & Power Co., 0.5 mile upstream from 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), Januanr 1913 to 

October 1914 (gage heights only) , November 1914 (fragmentary), July 1940 to September 

1957.

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. 17 years (1940-57), 1,675 cf s .

Extremes . Maximum discharge during year, 4,930 cfs Apr. 7 (gage height, 6.25 ft); maxige height, 6.35 ft Jan. 23 (ice jam); minimum daily discharge, 114 cfs Aug. 5.

1900-1914, 1940-57: 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 in 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 f loodmarks , 

at present site (discharge, 37,000 cfs, by computation of peak flow over dam 2J miles 

upstream adjusted for flow from intervening area) .

Remarks. Records good except those below 200 cfs, which are fair, 

by powerplants above station.

Revisions (water years).--WSP 1301: 1949.

Ordinary flow regulated

Rating table, water year 1956-57, except periods of ice effect (gage 

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

1.1

1.2

1.3 

1.5 

2.0

85

165

198

260

450

2.5 

3.0 

4.0 

5.0 

6.2

680

1,000

1,920

3,120

4,930

Discharge, in cubic feet per second, water year October 1956 to September 195T

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

Cfsm

In.

Oct.

461

562

556

574

464

658

710

714

658

738

620

596

482

532

504

376

583

405

375

446

376

376

456

634

604

702

489

536

498

390

548

16,623

536

0.539

0.62

Nov.

1,160

1,340

1,340

1,430

1,190

988

910

832

812

848

690

626

701

737

704

711

678

866

940

852

899

1,390

2,200

2,140

1,660

1,360

1,320

1,300

1,200

1,050

32,874

1,096

1.10

1.23

Dec.

990

904

824

914

911

948

821

944

1,080

1,380

1,310

1,610

1,910

2,050

2,190

2,720

2,990

2,920

2,350

2,080

1,940

1,970

2,620

2,610

3,180

3,120

2,800

2,490

2,230

1 990 

1^490

58,286

1,880

1.89

2.18

Jan.

1,590

1,410

1,280

1,270

1,320

1,250

1,170

1,170

1,200

1,170

1,050

1,140

1,090

1,020

995

1,060

975

935

965

970

915

972

3,320

5,740

3,530

3,250

2,550

2,030

1,830

1,680

1,550

48,397

1,561

1.57

1.81

Feb.

,500

,480

,420

,310

,370

,360

,330

,280

,300

,220

,130

,720

,480

* ,400

,250

,150

,170

,110

,050

,130

1,020

984

974

982

954

1,030

2,070

2,290

-

38,464

1,374

1.38

1.44

Mar.

2,070

1,710

1,600

1,380

1,210

1,210

1.140

1,160

1,310

1,460

*1,300

1,230

1,300

1,380

1,530

2,320

2,610

2,490

2,200

1,970

1,890

1,850

1,780

1,720

1,600

1,520

1,500

1,460

1,420

1,340

1,320

49,980

1,612

1.62

1.87

Apr.

1,180

1,480

1,990

1,790

2,140

3,970

4.930

4,440

4,600

3,970

3,670

3,390

3,320

3,180

2,860

2,670

2,490

2,250

*2,320

2,190

2,080

1,830

1,820

1,680

1,600

1,500

1,530

1,490

1,310

1,210

74,880

2,496

2.51

2.80

May

1,160

1,060

996

910

878

810

806

824

828

648

705

1,020

1,310

1,420

1,380

1,330

1,250

1,140

1,040

1,280

*1,950

1,780

1,650

1,480

1,450

1,340

1,070

1,040

1,040

984

799

35,378

1,141

1.15

1.33

June

816

722

737

890

762

670

566

724

694

604

520

517

470

429

443

416

366

487

332

312

344

384

378

362

346

302

356

394

436

381

15,160

505

0.508

0.57

July

290

353

306

343

356

248

334

190

296

235

301

247

206

330

269

283

182

226

226

230

230

224

241

271

240

269

245

245

308

288

322

8,334

269

0.271

0.31

Aug.

250

267

252

379

114

328

394

263

202

174

296

270

242

272

214

202

137

138

232

176

152

191

188

215

218

267

208

246

214

240

196

7,137

230

0.231

0.27

Sept.

260

312

130

176

334

267

254

213

*179

133

157

*197

240

194

175

240

378

334

290

310

248

213

263

120

481

418

287

288

320

194

7,605

254

0.256

0.29

Calendar year 1956: Max 11,300 Mln 168 Mean 1,694 Cfsm 1.70 In. 23.21

Water year 1956-57: Max 4,930 Min 114 Mean 1,077 Cfsm 1.08 In. 14.72

Peak discharge (base, 4,500 cfs). --Apr. 7 (9:30 a.m.) 4,930 cfs (6.25 ft).

- Discharge measurement made on this day.

Note. Stage-discharge relation affected by ice Jan. 1-3, 6, 11-21, 23.
244 HOUSATONIC RIVER BASIN

Still River near Lanesville, Conn.

Location. Lat 41°31'12", long 73°25'07", on left bank at upstream side of highway bridge, 

a quarter of a mile east of U. S. Highway 7, 1.1 miles south of Lanesville, Litchfield 

County, 3 miles upstream from mouth, and 4 miles south of New MilfortJ.

Drainage area. 68.5 sq mi.

Records available. October 1931 to September 1957.

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. 26 years, 122 cfs.

Extremes. Maximum discharge during year, 627 cfs Apr. 7 (gage height, 7.07 ft); minimum, 

12 cfs Sept. 30; minimum daily, 15 cfs Sept. 30; minimum gage height, 1.61 ft Oct. 22.

1931-57: Maximum discharge, 7,980 cfs Oct. 16, 1955 (gage height, 14.11 ft, from 

floodmarks), from rating curve extended above 3,000 cfs by logarithmic plotting; minimum, 5 cfs Oct. 20, 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 ice effect or backwater from aquatic 

vegetation, which are fair. Some diurnal fluctuation caused by mills at Brookfield 

and Danbury.

Revisions (water years). WSP 781: Drainage area. WSP 801: 1931-35. WSP 851: 1936. 

WSP 871: 1938.WSP 1031: 1944. WSP 1081: 1946. WSP 1301: 1944(M). WSP 1331: 

1936(M), 1938(M), 1941(M) .

Rating table, water year 1956-57, except periods of Ice effect and backwater from aquatic 

vegetation (gage height, In feet, and discharge, In cubic feet per second)

0.9 

1.5 

2.0 

3.0 105

4.0 

5.0 

6.0 

7.0

182

283

406

609

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

35

32

30

30

42

37

39

46

38

32

29 

27

26

25

24

25

25

27

26

26

23

22

56

*128 ~64

42

36

31

28

29

33

1,113

35.9

0.524

0.60

Nov.

250

420

310

156

114

96

87

82

93

82

70 

66

74

70

64

63

61

126

191

118

96

161

173

111

87

84

96

87

80

76

3,644

121

1.77

1.98

Dec.

70

65

65

71

68

66

68

67

86

178

128 

136

148

157

341

413

392

311

210

173

168

186

200

191

186

164

136

128

132

128

111

4,943

159

2.32

2.68

Jan.

100

90

S5

80

80

75

70

75

70

70

70 

75

70

60

60

55

55

*55

55

55

60

80

306

399

245

132

105

99

96

93

90

3,110

100

1.46

1.68

Feb.

87

84

"90 77

136

108

105

105

108

266

283

156

114

105

102

96

90

*82

84

82

80

77

77

80

77

87

200

215

3,253

116

1.69

1.76

Mar.

128

122

136

118

105

96

96

99

144

173

125 

111

111

*105

105

96

99

128

114

122

132

125

111

102

93

93

93

90

87

87

84

3,430

111

1.62

1.87

Apr.

80

124

235

152

200

450

593

458

435

442

317 

240

210

186

164

152

144

136

144

132

125

*114

108

108

102

105

111

96

90

84

6,037

201

2.93

3.27

May

77

74

69

66

64

64

62

60

57

54

52 

53

56

57

228

317

125

84

76

85

178

118

87

99

99

74

66

62

58

*54

48

2,723

87.8

1.28

1.48

June

50

47

53

51

49

47

47

45

43

_40

43 

43

44

44

45

44

51

50

48

49

48

45

42

40

45

47

54

48

48

48

1,398

46.6

0.680

0.76

Jily

40

37

35

34

34

33

31

29

33

37

34

31

32

52

41

35

34

33

30

29

27

25

27

29

28

27

27

29

59

13276"

1,180

38.1

0.556

0.64

Aug.

*44

35

30

26

26

26

24

23

22

22

22

20

22

21

22

26

24

20

 20 18

22

48

39

27

23

51

54

35

27

24

26

869

28.0

0.409

0.47

Sept.

22

20

22

28

26

25

22

20

20

20

*23 

26

23

23

21

19

37

37

27

25

29

37

27

27

24

22

21

21

18

15

727

24.2

0.353

0.39

Calendar year 1956: Max 435 Mln 21 Mean 118 Cfsm 1.72 lr , 23.35

Water year 1956-57: Max 593 Mln 15 Mean 88.8 Cfsm 1.30 Ir . 17.58

Peak discharge (base, 600 ofs).--Apr. 7 (8 to 10 a.m.) 627 cfs (7.07 ft).

* Discharge measurement made on this day.

Mote. Stage-discharge relation affected by Ice Jan. 1-22. Backwater from aquatic vegetation 

Oct. 1 to Hov. 1, May 1 to Sept. 30.
HOUSATONIC RIVER BASIN 245

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 1957.

Gage. Nonrecording gage at dam or at auxiliary artificial control below dam; read usually 

once daily.

Average discharge. 22 years, 86.3 cfs (adjusted for storage and diversion).

Extremes. Maximum discharge during year, 709 cfs Jan. 23; no flow at times (result of 

regulation).

1935-57: 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. Plow regulated since September 

1933 by Shepaug Reservoir (see p. 254).

Cooperation.--Records furnished by Bureau of Engineering, city of Waterbury.

Revisions (water years). WSP 971: 1936-42. WSP 1231: 1937(M), 1940-41(M), 1943-45(M), 

1947, 1948(M), 1950(M). WSP 1301: 1936.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

2.4

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

+11.5

Nov.

0.6

0

0

0

0

0

O

0

0

0

0

0

0

0

O

0

O

O

0

0

0

0

11

22

3.7

8.8

14

12

6.9

3.4

82.4

2.75

+43.2

Dec.

I±i

2.4

2.4

5.5

28

31

33

35

64

98

76

169

131

135

145

202

302

180

128

113

104

125

187

155

202

145

110

98

90

76

64

3,238.7

104

+3.5

Jan.

53

42

42

42

49

44

42

42

40

40

38

38

38

37

35

35

35

33

31

21

29

37

520

260

162

116

84

59

55

59

53

2,219

71.6

-0.1

Feb.

49

46

44

53

51

49

46

44

53

135

158

107

74

64

55

44

18

16

12

8.8

 5T3 5.3

6.9

11

11

26

230

119

-

1,541.3

55.0

+11.0

Mar.

98

87

76

59

21

23

16

21

35

42

35

28

37

55

55

169

TIo

76

62

51

44

57

53

42

35

29

24

20

18

17

14

1,509

48.7

+25.2

Apr.

12

160

184

116

13O

538

385

273

268

214

198

173

145

128

98

79

67

53

59

57

51

40

31

24

21

21

26

21

20

14

3,606

120

+28.9

May

16

11

6.9

9.8

9.8

8.8

7.9

5.3

4.0

2.9

2.5

2.9

13

6.1

23

8.8

4.6

3.4

3.4

38

~42 122

31

18

14

8.8

6.1

7.9

5.3

2 5

2J4

448.1

14.5

+15.3

June

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

+6.1

July

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

+1.8

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

+ .7

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

+1.9

Adjusted for diversion and change in contents in Shepaug Reservoir

Mean 

Cfsm 

In.

13.9 

0.366 

0.42

46. a

1.21 

1.35

108 

2.84 

3.27

71.5 

1.88 

2.17

66.0 

1.74 

1.81

73.9 

1.94 

2.24

149 

3.92 

4.37

29.8 

0.784 

0.90

Observed

Calendar year 1956: 

Water year 1956-57:

Hax 980 Mln 0 Mean 64.8 

Max 538 Mln 0 Mean 35.6

8.50 

0.224 

0.25

4.20 

0.111 

0.13

3.10 

0.082 

0.09

4.30 

0.113 

0.13

Adjusted

Mean 74.9 CfBm 1.97 In. 26.82 

Mean 48. 0 CfBm 1.26 In. 17.13

t Net diversion and change in contents, equivalent in cubic feet per second, in Shepaug Reservoir 

furnished by city of Waterbury.
HOUSATONIC RIVER BASIN

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, l£ 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 1957.

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. 27 years, 249 cfs (adjusted for storage and diversion).

Extremes.--Maximum discharge during year, 1,350 cfs Apr. 6 (gage height, 4.52 ft); minimum, 

5.5 cfs Aug. 14, 15, 18-21 (gage height, 1.01 ft).

1930-57: Maximum discharge, 50,300 efs 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 Aug. 14, 15, 18-21, 1957.

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

diverted from Shepaug Reservoir for municipal supply of city of Waterbury. Flow regulated by Shepaug Reservoir (see p. 254). 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 1956-57, except periods of ice effect (gage 

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

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

1.3 

1.6 

2.0 

2.5 

3.2

146

322

600 1.7

2.0 

2.5 

3.0 

4.0

4.4

162

322

520

1,040

1,280-

Discharge, in cubic feet per second, water year October 1956 to Septe-nber 1957

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.

41

42

*35

36

ii

41

43

47

39

36

33

31

37

20

28

27

30

20

27

24

19

22

41

43

37

31

28

22

26

28

32

1,019

32.9

+11.5

Nov.

235

126

91

74

69

62

59

53

63

56

50

52

54

52

48

48

48

127

102

79

78

167

112

105

97

97

100

*95

87

78

2,569

85.6

+43.2

Dec.

67

65

67

69

78

89

93

95

184

237

173

320

297

326

392

598

600

456

364

332

332

348

476

428

480

420

352

332

320

270

266

8,926

288

+3.5

Jan.

237

209

179

199

189

183

167

170

170

161

150

150

130

100

110

105

*100

100

95

95

100

120

500

370

300

250

210

185

170

160

155

5,519

178

-0.1

Feb.

150

140

135

175

200

180

170

160

180

488

368

270

235

217

196

180

162

*146

141

129

119

114

110

108

T14

149

424

304

-

5,464

195

+11.0

Mar.

266

239

233

208

170

157

157

162

217

217

176

*176

179

190

196

380

3l5

259

236

236

239

242

220

205

190

184

176

170

165

159

149

6,468

209

+25.2

Apr.

144

338

400

262

450

1.250

860

750

860

675

600

540

508

464

408

360

333

*315

308

283

262

236

220

205

187

223

211

190

165

154

12,161

405

+28.9

May

139

129

117

110

108

101

94

86

80

68

62

58

58

56

90

80

56

50

50

109

211

134

103

*105

8E

70

62

58

53

43*z

2,669

86.1

+15.3

June

38

40

40

36

33

32

30

27

26

24

23

23

22

22

22

20

19

17

18

22

19

17

16

16

16

*19

28

21

20

19

725

24.2

+6.1

July

16

14

12

12

11

11

11

10

11

*11

11

9.5

9.5

IB

14

11

9.5

9.0

8.5

8.5

8.0

7.5

JTs

9.0

7.5

8.0

9.0

11

22

23

21

363.0

11.7

+1.8

Aug.

14

10

8.5

8.0

9.0

8.5

7.5

7.0

6.5

6.0

6.5

7.0

6.5

6.0

6.0

6.5

6.5

6.0

5.5

^75

6.5

20

15

11

9.0

28

20

14

11

9.5

9.0

300.0

9.68

+0.7

Sept.

8.5

8.0

8.5

9.0

8.5

8.0

7.5

775

7.5

*7.5

8.0

8.5

9.5

11

11

12

34

21

15

13

14

16

16

15

14

13

11

10

9.5

9 5

351.5

11.7

+1.9

Adjusted for diversion and change in contents in Shepaug Reservoir

Mean 

Cfsm 

In.

44.4 

0.334 

0.38

129 

0.970 

1.08

Calendar year 1955: 

Water year 1956-57:

292 

2.20 

2.54

178 

1.34 

1.54

206 

1.55 

1.61

234 

1.76 

2.03

434 

3.26 

3.64

101 

0.759 

0.88

Observed

Max 1,840 Min 10 Mean 216 

Max 1,250 Min 5.5 Mean 127

30.3 

0.228 

0.25

13.5 

C.102 

0.12

10.4 

0.078 

0.09

13.6

0.102 

0.11

AdJ-isted

Mean 226 Cfs-t 1.70 In. 23.16 

Mean 139 Cfs-t 1.05 In. 14.27

Peak discharge (base, 1,500 cfs). No peak above base.

* Discharge measurement made on this day.

t Net diversion and change in contents, equivalent in cubic feet per second, in Shepaug Reservoir, 

furnished by city of Waterbury.

Note. ~ Stage-discharge relation affected by ice Nov. 25, Dec. 1, 2, Jan. 11 to Feb. 9, Feb. 12, 
HOUSATONIC RIVER BASIN 247

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. 75.3 sq mi.

Records available. June 1932 to September 1957.

Gage.--Water-stage recorder. Datum of gage is 165.60 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers).

Average discharge.--25 years, 130 cfs.

Extremes. Maximum discharge during year, 1,100 cfs Jan. 23 (gage height, 6.26 ft); minimum, 4.0 cfs Aug. 10 (gage height, 2.31 ft).

1932-57: 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; minimum gage height, that of Aug. 10, 1957.

Remarks. Records excellent except those for periods of ice effect, which are good, or no 

gage-height record, which are fair. Infrequent regulation at low flow by mill 

upstream.

Revisions (water years).--WSP 781: Drainage area. WSP 851: 1934(H), 1936(M). WSP 1201: 

1933-34, 1935(M), 1937(M).

Rating tables, water year 1956-57, except periods of Ice effect (gage 

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

2.5 

2.7 

3.0 

3.5

Oct. 1 to Apr. 5

9.0

20

4.0 

4.5 

5.0 

5.9

206

337

515

920

Apr. 6 to Sept. 30

2.3

2.4

2.6

4.5

7.7

16.5

2.8 

3.0

Note. Same as preceding 

table above 3.0 ft.

Discharge, In cubic feet per second, water year October 1956 to September 1957

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

15

14

al6

alS

al5

a30

a24

a20

ais

aie

15

14

14

14

14

13

13

12

12

12

12

26

*32

21

18

16

16

15 

14

15

522

16.8

0.223

0.26

Nov.

156

88

69

52

42

38

33

31

34

31

27

28

31

29

27

26

26

100

77

54

50

153

88

65

53

55

55

48

45 

40

1,651

55.0

0.730

0.81

Dec.

36

35

38

40

38

37

39

39

94

124

80

158

125

150

268

412

309

221

161

146

148

152

204

177

189

146

126

123

128

109

blOO

4,152

134

1.78

2.05

Jan.

97

b73

b83

63

72

b72

72

b69

67

70

b65

b82

b64

b65

b59

b51

*b53

b52

b52

b52

b53

b60

b590

bT93

b!41

118

106

94

94

84

79

2,945

95.0

1.26

1.45

Feb.

82

79

b70

92

108

89

94

95

162

457

206

135

109

106

100

94

90

*82

86

82

70

69

72

73

76

94

282

148

-

3,302

118

1.57

1.64

Mar.

123

120

128

111

95

94

95

106

150

146

108

108

105

*103

103

242

163

132

121

130

139

135

118

105

97

97

100

97

92 

88

TL

3,628

117

1.55

1.79

Apr.

74

264

198

139

404

910

454

413

615

367

289

255

238

210

185

169

161

*156

161

144

133

120

113

113

103

137

123

114

98 

88

6,948

232

3.08

3.44

May

79

72

66

64

64

61

56

52

49

45

42

46

52

46

90

84

54

47

45

87

118

76

*62

73

54

44

46

51

40

35

32

1,832

59.1

0.785

0.90

June

29

29

35

30

27

26

24

22

21

20

19

19

18

16

16

15

14

13

16

18

15

13

13

13

13

*13

13

13

13

11

558

18.6

0.247

0.28

July

11

10

9.7

9.3

9.3

8.1

8.1

7.7

8.5

*8.1

7.7

7.4

8.5

15

14

11

9.3

8.9

8.1

7.1

6.1

7.1

7.4

6.7

6.4

6.1

5.8

6.1

13

22

23

296.5

9.56

0.127

0.15

Aus.

*14

10

8.9

8.1

11

8.9

7.4

7.4

6.4

6.1

6.4

6.1

6.1

5.8

5.8

6.1

5.1

4.5

6.1

5.8

6.1

19

12

8.5

7.7

26

18

12

10

9.7

9.7

284.7

9.18

0.122

0.14

Sept.

8.5

8.1

8.5

*8.5

8.1

7.7

8.1

.7

 .1

.7

.1

.1

.4

.7

8.1

16

14

11

10

15

14

13

12

11

10

9.7

9.3

8.9

8.9

287.3

9.58

0.127

0.14

Calendar year 1955: Max 651 

Water year 1956-57: Max 910

Min 8.3 

Min 4.5

Mean 112 

Mean 72.3

Cfsm 1.49 In. 20.23 

Cfsm 0.960 In. 13.05

Peak discharge (base, 1,400 cfs).--No peak aboM

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for nearby 

streams.

b Stage-discharge relation affected by Ice.
248 HOUSATONIC RIVER BASIN

Housatonic River at Stevenson, Conn.

Location.--Lat 41°23'05", long 73°10'05", on left bank in New Haven County, 0.2 mile 

downstream from dam of Connecticut Light & Power Co. at Stevenson, Fairfield 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 1957.

fiage. Water-stage recorder. Datum of gage is 24.98 ft above mean sea level, datum of 

1929 (levels by Corps of Engineers).

Average discharge. 29 years, 2,616 cfs (adjusted for storage and diversion).

Extremes. Maximum discharge during year, 13,000 cfs Apr. 8 (gage height, 10.73 ft); minimum, 56 cfs Mar. 28 (gage height, 0.64 ft); minimum daily, 86 cfs May 5.

1928-57: Maximum discharge, 75,800 cfs Oct. 16, 1955 (gage height, 24.50 ft), 

from rating curve extended above 35,000 cfs on basis of computations of flow at 

Stevenson and Derby dams and slope-area determinations at gage heights 23.5 and 21.5 ft; 

practically no flow at times, result of regulation.

Remarks. Records good. Ordinary flow completely regulated by Stevensor hydroelectric 

plant. Plow regulated by Lake Candlewood, Lake Lillinonah, Lake Zoar and Shepaug 

Reservoir, having a combined usable capacity of 6,840,000,000 cu ft , corrected 

(see p. 254), and by small diversion from basin at Shepaug Reservoir.

Revisions (water years). WSF 711: 

WSP 1301: 1933-34(M), 1936-37.

1929(M). WSP 781: Drainage area. WSP 1231: 1951.

Plating table, water year 1956-57 (gage height, in feet, and discharge, 

in cubic feet per second)

0.9 

1.0 

1.5 

2.0 

3.0

82

94

170

285

660

4.0 

5.0 

7.0 

9.4

1,250

2,130

4,860

9,700

Discharge, in-cubic feet per second, water year October 1956 to September 1957

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.

312

268

*450

654

222

1,060

1,290

360

238

770

338

1,560

310

87

477

706

968 

954

361

178

256

760

704

*740

563

1,220

106

87

858

352

461

17,670

570

+ 47

Nov.

4,230

3,710

1,930

120

1,180

1,360

374

1,140

932

620

88

1,050

1,200

400

850

1,150

230 

1,100

1,600

1,650

1,350

1,950

3,500

3,200

2,350

1,600

1,950

2,600

2*050

47,414

1,580

+249

Dec.

850

90

2,150

2,000

2,150

1,450

2,100

950

900

2,450

2,040

1,800

3,690

4,280

4,100

4,430

5,280 

5,590

3,930

2,980

3,820

3,430

3,750

4,330

4,870

3,970

4,710

3,660

3, 960

2 230 

3*050

95,040

3,066

-11

Jan.

1,580

2,120

1,880

2,260

1,830

1,320

1,780

1,480

1,910

2,250

1,620

1,360

470

2,090

2,260

1,780

1,450 

1,980

1,160

1,460

2,340

*1,530

6,050

7,800

6,240

5,260

3,160

3,590

1,740

2 390

2 530

76,670

2,473

-202

Feb.

2,390

1,813

1,250

1,770

1.S80

2,030

1,930

1,720

2,000

4,110

5,720

2,636

1,740

2,000

1,960

1,990

1,080 

1,940

1,400

1,620

*1,670

1,100

1,640

438

2,640

2,000

3,100

4,310

59,868

2,138

+109

Mar.

4,410

2,250

1,700

2,310

1,930

1,900

2,840

2,460

2,360

545

2,090

2,480

1,800

*1,980

3,550

3,700

5,000 

3,640

4,000

1,870

3,270

2,700

1,570

1,830

2,650

1,940

1,680

1,900

2,330

1,550

820

75,053

2,421

+88

Apr.

2,380

4,130

3,700

2,560

3,700

7,120

9,OOO

8,660

9,700

7,200

4,580

4,560

4,990

4,810

4,360

4,040

3,440 

3,860

2,700

3,720

2,460

2,750

2,650

*2,440

2,810

2,550

2,840

562

2,240

2 15O

122,662

4,089

+141

May

2,080

2,040

2,330

1,240

86.

1,320

1,220

1,350

1,970

1,740

285

1,280

1,500

2,650

2,380

2,480

1,760 

893

551

2,840

5,610

2,480

2,330

2,010

1,030

1,270

2,450

1,350

1,710

*626

1,530

52,391

1,690

-62

June

1,300

2,160

1,430

996

2,010

1,100

1,070

922

127

1,250

1,420

l,2dO

914

1,360

299

194

1,360 

595

994

640

238

192

154

196

202

188

161

216

180

210

23,358

779

-146

JUy

230

130

190

210

272

224

184

208

374

432

154

238

189

220

231

231

270 

258

214

200

330

1,440

1 2OO

316

302

274

210

359

409

342

276

10,117

326

-26

Aug.

390

346

325

140

^Sz

250

302

376

398

598

206

358

478

322

641

728

291 

149

'630

298

291

352

32 O

244

656

320

286

282

262

342

12,823

414

-137

Sept.

242

190

888

846

242

290

236

151

*293

244

320

408

519

221

121

992

1.280 

246

258

428

376

178

720

270

151

506

330

444

212

192

11,794

393

-107

Adjusted for diversion and change in reservoir contents

Mean 

Cfsm 

In.

617 

0.399 

0.46

1,829 

1.18 

1.32

Calendar year 1956 : 

Water year 1956-57:

3,055 

1.98 

2.28

2,271 

1.47 

1.70

2,247 

1.45 

1.51

2,509 

1.62 

1.87

4,230 

2.74 

3.06

Observed

Max 14,500 Min 87 Mean 2,499 

Max 9,700 Mln 86 Mean 1,657

1,628 

1.05 

1.21

633 

0.410 

0.46

300 

0.194 

0.22

277 

0.179 

0.21

286 

0.185 

0.21

Adjusted

Mean 2,529 Cfam 1.64 In. 22.26 

Mean 1,651 Cfam 1.07 In. 14.51

Note. No gage-height record Nov. 12 to Dec. 1O and doubtful gage-height recor-3 June 3O to July 4j 

discharge computed from powerplant data. 

* Discharge measurement made on this day.
HOUSATONIC RIVER BASIN 

West Branch Naugatuck River at Torrington, Conn.

249

Location. Lat 41°48'03", long 73°07'26", on downstream side of Prospect Street Bridge In 

Torrington, Lltchfield County, half a mile upstream from confluence with Eaet Branch 

and 3 miles downstream from Stillwater Pond.

Drainage area. 33.4 sq mi.

Records available. August 1956 to September 1957.

Gage.--Wire-weight gage read twice daily. Crest-stage indicator since Dec. 18 1956 

Datum of gage is 540.54 ft above mean sea level, datum of 1929.

Extremes. 1956: Maximum discharge observed during period August to September not determined, occurred Sept. 6; minimum observed, 5.8 cfs Aug. 19 (gage height 3 61 ft) 

1956-57: Maximum discharge during water year, 1,470 cfs Jan. 23 (gage height 

7.54 ft); minimum observed, 4.4 cfs July 14, 20, 21, Aug. 3, 11; minimum gage height 

observed, 3.86 ft July 11.

Remarks. Records good. City of Torrington diverts an average of about 4 000 COO gal of 

water a day for municipal supply from North Pond and Reuben Hart and Hatchaloosie 

Reservoirs. Regulation at low water by Stillwater Pond.

Rating table, Aug. 16, 1956, to Sept. 3O, 1957 (gage height, in feet, and

discharge, in cubic feet per second) 

(Shifting-control method used June 30 to July 12, 1957)

3.9

4.1 

4.3 

4.5 

4.7

4.1 

6.8

5.0 

5.5 

6.0

6.7

160

325

710

Discharge, in cubic feet per second, 1356

Day Aug.

_

_

_

_

Sept.

9.1

12

11

28

Day

8

12

Aug.

_

_

_

_

_

-

Sept.

16

7.9

8.3

9.1

8.7

8.7

Day

13

14

15

16

17

18

Aug.

_

-

_

9.3

8.7

7.5

Sept.

8.7

9.1

6.5

8.3

13

9.5

Day

19

20

21

?.?.

23

24

Aug.

6.1

9.5

16

10

10

11

Sept.

9.7

11

9.5

7.4

7.9

14

Day

25

26

27

28

29

30

31

Runoff in inches ...................................................................

Aug.

9.5

7.9

10

10

13

13

_

-

_

-

Sept.

10

9.7

13

10

318.6

10.6

0.317

0.35

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

~9.1 14

9.1

12

8.3

7.4

12

10

8.5

10

8.1

7.5

7.4

8.9

9.5

8.5

8.5

8.7

8.1

6.8

9.7

11

*13

10

9.3

10

9.1

8.7

9.5

9.1 

12

293.8

9.48

0.284

0.33

Nov.

17

21

79

37

24

20

18

17

15

13

11

14

16

16

14

16

12

43

34

25

24

97

43

30

25

22

25

21

21

19

789

26.3

0.787

0.88

Dec.

16

18

22

19

19

18

20

22

40

42

36

120

69

53

59

146

120

74

44

44

43

50

116

80

137

61

50

45

44

31 

36

1,694

54.6

1.63

1.88

Jan.

34

28

25

26

26

24

26

25

24

*26

24

24

24

20

li

22

21

20

19

19

21

48

*650

126

67

56

50

46

47

a44 

a42

1,673

54.0

1.62

1.87

Feb.

38

37

36

43

37

34

36

35

54

137

73

41

40

34

32

30

29

30

*28

22.

22

22

24

25

28

75

~TZ 232

1,346

48.1

1.44

1.50

Mar.

59

50

47

38

32

30

33

41

61

52

38

43

48

61

*65

a!70 ~59

61

54

59

56

59

54

55

50

51

45

41

38

a38 

38

1,626

52.5

1.57

1.81

Apr.

41

126

94

64

146

309

I9T

188

191

153

142

139

126

101

76

69

*66

60

80

69

61

52

45

41

38

52

46

41

39

32.

2,878

95.9

2.87

3.20

May

29

25

28

20

23

25

20

17

15

14

15

26

*25

21

29

25

16

15

21

60

80

43

32

22

13

14

18

19

9.7

9.7 

11

740.4

23.9

0.716

0.83

June

11

20

14

12

9.3

7.7

8.9

6.9

6.6

6.8

6.9

7.4

7.1

7.1

6.6

6.5

678

7.1

8.5

7.7

7.4

8.5

8.1

10

11

19

14

12

14

*8.7

287.6

9.59

0.287

0.32

July

9.1

*6.6

6.5

6.9

7.2

6.9

7.2

6.5

4.7

5.1

4.7

5.5

6.8

5.3

7.5

6.1

5.8

6.1

5.6

4.4

4.4

9.1

6.1

6.5

6.1

6.1

5,2

7.1

13

7.4 

6.9

202.4

6.53

0.196

0.23

Calendar year 1956: Max - Min - -Mean - Cfsm - In.

Aig.

6.3

5.8

4.4

973

6.8

5.8

6.5

6.0

6.1

6.1

5.0

6.9

6.1

7.1

7.2

6.8

5.1

5.2

6.9

7.1

7.4

10

6.8

5.3

5.1

"6.5 12

7.2

7.5

8.1

6 . 8

209.2

6.75

0.202

0.23

Sept.

5.5

4.8

6.0

5.1

*4.8

6.1

4.8

4.6

5.7

7.1

6.8

7.4

6.8

5.6

5.1

6.1

11

6.5

5.8

6.5

5.3

5.1

7.2

6.9

7.5

6.5

5.3

5.1

4.8

7.4

184.2

6.14

0.184

0.21

Water year 1956-57 : Max 65O Min 4.4 Mean 32.7 Cfsm O.979 In. 13.29

Peak discharge (base, 8oO cfs). Jan. 23 (about 4 a.m.) 1,470 cfs (7.54 ft). __

* Discharge measurement made on this day.

a No gage-height record; discharge estimated on basis of weather records and records for stations 

on East Branch and Naugatuck River near Thomaston.

50569Z O - 59 - 17
HOUSATONIC RIVER BASIN

East Branch Naugatuck River at Torrington, Conn.

Location.--Lat 41°48'12", long 73°07'06", on upstream side of Wall Street Bridge in Torrington, Litchfield County, 0.3 mile downstream from Troy Brook and C.6 mile upstream

from confluence with West Branch. 

Drainage area.--13.8 sq mi.

Records available. August 1956 to September 1957. 

gage. Wire-weight gage read twice daily. Crest-stage indicator since lee. 18, 1956.

Datum of gage is 539.26 ft above mean sea level, datum of 1929. 

Extremes.--1956: Maximum discharge observed during period August to September, 21 cfs

Aug. 21 (gage height, 3.43 ft); minimum observed, 0.5 cfs Sept. 15 (gage height,

2.87 ft).

1956-57: Maximum discharge during water year, 305 cfs Jan. 23 (g£ge height,

4.77 ft); minimum observed, 0.5 cfs Oct. 20; minimum gage height observed, 2.85 ft

July S8.

Flood of Aug. 19, 1955, reached a peak discharge of 6,210 cfs at a point If miles

upstream, drainage area 10.2 sq mi. 

Remarks.--Records good except those for periods of ice effect, which are fair, and those

for periods of no gage-height record, which are poor. Some regulation at low flow.

Rating table, Aug. 16, 1956, to Sept. 30, 1957, except periods of ice

effect (gage height, in feet, and discharge, in cubic feet per second)

(Shifting-control method used Aug. 16 to Dec. 16, 1956)

Z.8 0.6

2.9 1.5

3.0 3.2

3.1 

3.3 

3.6

6.0

16

4.0 

4.4

112

199

Discharge, in cubic feet per second, 1956

Day

1

£

3

4

5

6

Aug.

_

-

-

-

-

_

Sept.

1.5

1.5

1.3

1.1

1.2

10

Day

7

a

9

10

11

12

Aug.

.

-

-

-

-

-

Sept.

12

1.5

.9

1.1

1.1

1.1

Day

13

14

15

16

17in

Aug.

_

-

-

7.8

7.8

6.9

Sept.

1.1

1.1

.6

1.8

1.8

2.8

Day

19

20

21

22

23

24

Aug.

7.4

9.6

16

8.7

7.8

7.4

Sept.

1.8

2.0

1.5

.9

.8

7.8

Day

25

26

27

28

29

30

31

Runoff in inches. .................................................................

Aug.

6.0

6.0

6.9

3.2

2.0

1.5

4.0

_

_

_

-

Sept.

2.4

2.0

1.5

6.0

3.5

2.6

76.3

2.54

0.21

Discharge, in cubic feet per second, water year October 1956 to September 1957

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.

3.5

3.0

3.0

6.9

5.4

2.0

8.2

6.9

3.8

3.0

3.0

2.4

2.2

2.4

2.8

2.4

2.4

2.8

2.8

1.1

2.0

2.8

*9.2

679

6.0

3.8

2.8

1.9

2.8

4.9

8.7

121.8

3.93

0.285

0.33

Nov.

22

12

30

TT

8.7

7.4

6.9

8.7

7.4

6.0

4.3

670

8.2

6.0

5.7

5.7

5.4

23

12

9.2

8.7

28

13

8.2

b7.5

9.2

9.6

7.8

7.4

b7

312.0

10.4

0.754

0.84

Dec.

b6

6.9

8.2

8.7

8.2

8.7

9.2

8.7

26

14

10

43

25

20

26

87

48

35

44

26

32

33

52

47

55

33

28

28

26

b24

b22

848.6

27.4

1.99

2.29

Jan.

b24

b22

b£0

b!9

20

b!6

b!4

16

14

*14

b!3

13

12

b8

b9

b8

b8

b8

b8

bio

bl8

37

*192

64

48

26

b20

b!6

b!7

b!4

b!2

740

23.9

1.73

1.99

Feb.

b!2

11

blO

14

b!3

12

13

12

34

60

37

b!9

b!5

11

10

blO

b9

b9

*9.2

b9

b8.5

b8. 5

6.2

7.6

10

16

70

25

-

483.2

17.3

1.25

1.30

Mar.

21

17

15

b!4

b!3

b!3

13

18

30

20

b!7

20

22

29

*28

72

IT

30

29

30

33

33

28

26

24

24

23

23

23

21

18

764

24.6

1.78

2.05

Apr.

20

57

35

24

101

164

72

75

88

63

55

49

44

36

29

26

*24

22

30

24

19

16

15

14

13

23

15

14

14

ii

1,193

39.8

2.88

3.21

May

10

9.6

8.7

8.7

8.2

8.2

8.7

7.8

7.8

7.4

7.8

13

*11

11

14

8.7

7.4

6.0

9.6

33

24

13

10

8.7

6.9

5.4

8.7

6.4

5.4

4.6

4^5

304.0

9.81

0.711

0.82

June

4.3

6.4

5.4

4.9

4.6

4.3

5.2

4.0

3.8

3.8

3.8

3.8

3.8

3.8

2.8

2.8

3.2

3.2

3.0

3.8

3.2

2.4

2.0

2.8

2.8

6.9

T76

4.9

4.6

2.6

117.5

3.92

0.284

0.32

Jily

2.4

*1.9

1.6

1.6

2.0

2.4

1.6

1.5

1.6

1.8

1.5

1.5

1.5

2.4

2.2

2.0

1.8

1.9

1.6

1.5

i^i

3.2

2.4

2.0

2.0

1.8

1.5

1.8

6.9

175

2.4

65.7

2.12

0.154

0.18

Aug.

2.0

1.6

1.3

1.3

2.2

1.8

2.4

4.9

6.9

7.8

3.8

2.7

2.8

2.4

2.7

2.3

1.4

1.2

TTT

2.5

9

12

4

2.2

2.0

20

6

2.6

3.2

3.0

2 . 4

122.1

3.94

0.286

0.33

Sept.

2.1

1.8

3.0

2.7

2.5

2.5

2.3

1.4

1.5

2.4

3.8

3.0

2.8

3.0

1.8

5

12

5

3.4

2.8

2.5

2.4

2.3

2.7

2.8

2.7

2.6

2.3

1.5

1.5

87.9

2.93

0.212

0.24

Calendar year 1956: Max - Min - Mean - Cfsm - In. -

Water year 1956-57: Max 192 Min l.l Mean 14.1 Cfsm 1.02 In. 13.90

Peak discharge (base, 300 cfs).--Jan. 23 (about 4 a.m.) 305 cfs (4.77 ft).

Discharge measurement made on this day.

b Stage-discharge relation affected by Ice.

Note. No gage-height record Aug. 6, 7, 12-31, Sept. 1-3O; discharge computed on basis of 

observer's and engineer's notes, weather records, and records for stations on West Branch and Naugatuck: River near Thomaaton.
HOUSATONIC RIVER BASIN

Naugatuck River near Thomaston, Conn.

Location. Lat 41°42'15", long 73°03'53", on right bank near downstream side o*" Twomile 

Bridge , 250 ft downstream from New York, New Haven and Hartford Railroad bridge, 

0.4 mile upstream from Leadmine Brook, 2 miles north of Thomaston, Litchfield County, 

and at mile 31.

Drainage area. 71.9 sq mi.

Records available.--October 1930 to September 1957.

;e_. Water-stage recorder. Datum of gage is 389.44 ft above mean sea level, datum of 

"929 (levels by Corps of Engineers).

Average discharge. 27 years, 144 cfs.

Extremes. Maximum discharge during year, 1,600 cfs Jan. 23 (gage height, 4.34 ft); maximum gage height, at least 5.0 ft Jan. 24 (ice Jam); minimum discharge, 8.0 cfs 

Sept. 30 (gage height, 0.25 ft); minimum daily, 9.5 cfs Sept. 29.

1930-57: 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-arsa determination of peak flow; minimum, about 7 cfs (result of freezeup) Mar. 12, 1940; minimum 

daily, that of Sept. 29, 1957; minimum gage height, that of Sept. 30, 1957.

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

which are fair. Diurnal fluctuation at low flow.

Re^visions (water 

WSP 1111: I9i

years).--WSP 741: 1931-32. WSP 781: Drainage area. WSP 821: 1936(M),

1939(M).

Rating tables, water year 1956-57, except periods of ice effect (gage 

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

Oct. 1 to Jan. 23 23 to Sept. 30

0.4

.7

1.2

15

43

117

1.8 

2.5 

3.5

260

535

1,050

5.5

18

0.7 

1.1

Note. Same as preceding 

table above 1.1 ft.

Discharge, in cubic feet per second, water year October 1956 to September 1957

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

Cfsm

In.

Oct.

28

23

21

26

28

21

40

33

26

25

24

21

20

18

21

21

20

21

21

19

19

23

39

32

28

24

22

21

EO°2

25

752

24.3

0.338

0.39

Nov.

139

74

151

100

66

53

47

47

51

41

34

38

49

42

40

40

35

130

105

72

66

200

126

82

63

69

68

61

56

53

2,198

73.3

1.02

1.14

Dec.

45

48

54

55

51

51

53

55

141

130

98

258

182

*160

198

359

312

212

143

135

141

162

294

230

300

200

151

141

135

107

107

4,708

152

2.11

2.4^

Jan.

bl!4

bl!2

b98

98

89

b80

b80

82

80

80

*b74

74

b68

b51

b54

b49

b50

b49

b49

b53

b58

b76

b990

254

153

124

107

100

102

92

85

3,625

117

1.63

1.88

Feb.

88

86

78

97

96

90

86

88

123

314

182

110

96

90

82

78

77

77

77

*71

66

64

66

68

75

137

470,

Ts^

_

3,217

115

1.60

1.67

Mar.

133

121

114

98

90

88

91

105

155

135

105

112

117

133

139

556

255

155

139

*139

143

155

137

126

117

112

108

105

102

100

91

4,026

130

1.81

2.09

Apr.

91

332

250

153

441

1,020

574

436

517

384

*339

308

278

239

198

175

162

151

178

162

143

126

112

108

102

130

124

107

97

90

7,527

251

3.49

3.89

May

77

75

71

68

67

67

63

58

56

52

56

64

67

61

*86

67

a60

a57

a55

allO

a!30

alOO

a80

a90

a65

a55

a57

a65

a52

44

36

2,111

68.1

0.947

1.09

June

32

33

40

36

33

30

30

28

24

24

24

24

24

24

a22

20

20

21

28

26

26

24

20

23

a25

a30

a35

a26

a25

a22

799

26.6

0.370

0.41

July

*a20

17

15

14

22

17

15

14

13

20

12

11

14

24

18

a!5

a!4

a!3

a!3

a!2

all

alO

a!4

a!3

a!2

all

all

a!2

a25

a28

Zl

481

15.5

0.216

0.25

Aug.

*18

17

14

12

15

16

15

17

23

26

21

17

17

16

17

17

14

10

12

15

30

60

21

16

13

91

27

*20

19

21

17

664

21.4

0.298

0.34

Sept.

16

12

16

17

15

15

14

10

11

14

20

16

17

16

11

22

H

23

18

17

17

14

15

16

15

15

14

13

9.5

10

495.5

16.5

0.229

0.26

Calendar year 1956: Max 1.490 Mln 17 Mean 128 Cfsra 1.78 in . 24.27

Water year 1956-57: Max 1,020 Min 9.5 Mean 83.8 Cfsm 1.17 In. 15.84

Peak discharge (base, 1,500 cfs).--Jan. 23 (7 a.m.) 1,600 cfs (4.34 ft).
HOUSATONIC RIVER BASIN

Leadmine 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-jj miles northeast of Thomaston, Lltchfield

County.

Drainage area. 24.0 sq mi.

Records available. September 1930 to September 1957.

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. 27 years, 48.1 cfs.

Extremes.--Maximum discharge during year, 640 cfs Jan. 23 (gage height, 6.18 ft); minimum, 

about 0.04 cfs Aug. 21 (gage height, 1.90 ft).

1930-57: 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 of peak flow; minimum, that of Aug. 21, 1957; 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 1 cfs, which are poor. Occasional low-water regulation.

Revisions (water years

1933IM), 1934, 1935 

1947(M), 1949, 1951

.--WSP 781: Drainage area. WSP 1301: 1947. WSP 1331: 193l(M), 

M), 1936, 1937(M), 1938, 1939-40(P), 1942(P), 1943-44(M), 1945, 

P), 1953(P).

Rating tables, water year 1956-57, except periods of Ice effect (gage

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

(Shifting-control method used Oct. 1 to Jan. 23)

Oct. 1 to Jan. 23 Jan. 23 to Sept. 3O

2.3 

2.5 

2.7

3.0

2.6 

4.8 

9.0

3.4 

4.0 

4.5 

5.3

1O2 

177 

350

1.9

2.0

2.1

2.7

0.04 

.15

2.1 

4.4

3.0 

3.5

4.0 

4.5 

5.0 

5.5

171

275

400

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

6.2

5.7

5.0

5.5

8.0

6.4

9.3

973

6.4

5.2

4.6

4.2

4.1

3.8

3.7

3.7

3.6

3.5

3.5

3.5

3.5

3.5

6.6

9.3

7.3

6.4

6.2

5.9

5.7

5.5

5 9

171.0

5.52

0.230

0.27

Nov.

38

26

35

22

17

14

12

12

14

12

10

10

11

*10

9.0

8.4

8.3

30

26

18

17

44

26

17

14

16

17

15

14

11

533.7

17.8

0.742

0.83

Dec.

10

11

11

13

12

12

13

13

33

32

24

67

42

37

52

95

78

51

34

31

33

4O

75

56

66

44

34

31

31

24

26

1,131

36.5

1.52

1.75

Jan.

24

23

22

25

23

20

22

22

21

*20

19

18

18

16

14

16

16

15

14

15

16

32

350

102

68

54

45

34

34

31

28

1,177

38.0

1.58

1.82

Feb.

26

25

24

27

29

27

27

27

44

138

78

45

*38

31

27

25

24

24

24

22

20

20

22

24

28

39

172

69

-

1,126

40.2

1.68

1.75

Mar.

49

42

39

33

31

30

33

42

74

58

42

42

42

41

*41

128

69

50

46

45

55

63

48

41

36

34

33

32

31

29

28

1,407

45.4

1.89

2.18

Apr.

26

140

85

53

195

388

196

150

210

146

119

90

76

64

55

49

*47

44

50

46

41

36

33

33

31

41

37

32

29

26

2,568

85. b

3.57

3.98

May

24

23

22

21

20

19

18

17

16

14

15

19

20

18

*29

22

17

16

19

56

63

34

28

24

19

16

14

13

11

9.9

9.1

666.0

21.5

0.896

1.03

June

8.3

8.1

9.4

873

7.2

6.5

6.1

5.8

5.2

4.4

4.1

3.8

3.6

3.2

3.0

2.6

2.4

2.1

3.5

3.4

2.4

1.8

1.4

*1.2

1.1

1.4

6.1

3.4

3.1

2 . 6

125.5

4.18

0.174

0.19

July

*1.7

1.1

.8

.7

.6

.5

.5

.45

.6

.5

.45

.4

.4

1.8

1.4

.8

.45

.3

.2

.15

.15

.1

.15

.1

.2

.25

.6

.65

2.4 

So. £

573

25.90

0.835

0.034

0.04

Aug.

1.2

.65

.5

.5

.5

.35

.3

.3

.25

1.2

1.9

1.4

.7

.45

.3

.25

.15

.1

.08

.07

.2

8.2

3.0

1.1

.65

-6.3 12

*2.7

1.4

1.0

1.0

48.70

1.57

0.065

0.07

Sept.

0.9

.6

.45

.4

.3

.3

.2

.2

.3

.25

.2

.15

.15

.15

.15

1.3

11

7.2

9.4

10

10

10

10

5.0

1.1

.7

.45

.3

.3

.3

81.75

2.72

0.113

0.13

Calendar year 1956 : Max 460 Mln 0.5 Mean 41.9 Cfsm 1.75 In. 23.76

Water year 1956-57: Max 388 Mln 0.07 Mean 24.8 Cfsm 1.03 In. 14. 04

Peak discharge (base, 65O cfs). No peak above base.

* Discharge measurement made on this day.

Note. Stage-discharge relation affected by Ice Nov. 30, Dec. 19, 2O, Jan. 2-13, 16-23, 31, 

Feb. 1-9, 12-24.
HOUSATONIC RIVER BASIN

Naugatuck River at Beacon Falls, Conn.

Location. Lat 41°26'32" , long 73°03'47", on left bank at downstream side of Bridge Street 

highway bridge at Beacon Falls, New Haven County, 0.4 mile upstream from Bronson Brook 

and at mile 10.1

Drainage area. 261 sq mi.

Records available.--June 1918 to September 1924, September 1928 to September 1957. Prior 

to October 1955, published as "near Naugatuck."

Gage. Water-stage-recorder. Datum of gage is 117.28 ft above mean sea level, datum of 

1929. Prior to Oct. 1, 1955, water-stage recorder at site 2.5 miles upstream at datum 

37.89 ft higher. Oct. 1, 1955, to Mar. 21, 1957, wire-weight or chain gage at present 

site and datum.

Average discharge.--35 years (1918-24, 1928-57), 474 cfs (adjusted for storage and 

diversion).

Extremes. Maximum discharge during year, about 4,500 cfs Jan. 23; minimum, 49 cfs 

Aug. 18 (gage height, 1.53 ft); minimum daily, 55 cfs Aug. 18.

1918-24, 1928-57: Maximum discharge, 106,000 cfs Aug. 19, 1955 (gage height, 

25.7 ft, from floodmarks), from rating curve extended above 9,000 cfs on basis of 

slope-area determinations at gage heights 12.4 and 25.7 ft (site and datum then in 

use); minimum, 24 cfs Oct. 21, 1935; minimum daily, 40 cfs Oct. 5, 12, 1930, Sept. 7, 

1936; minimum gage height (present site and datum), that of Aug. 18, 1957.

Flood in November 1927 reached a stage of 14 ft, site and datum then in use (discharge, about 26,000 cfs).

Remarks.--Records good except those for peribds of no gage-height record, 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 ft (see p. 254). 

Flow increased by diversion from Shepaug Reservoir into Naugatuck River basin.

Revisions (water years).--WSP 781: Drainage area. WSP 1171: 1918-24, 19S8-49. The supplemental peak discharges for the water year 1956 have been revised as shown below, 

superseding figures published in WSP 14S1.

Revised peak discharge.--1955-56: Oct. 

Nov. 5 (1:30 a.m.) 10,700 cfs (11.24 ft).

31 (about 10 a.m.) 11,700 cfs (11.6 ft);

Discharge, In cubic feet per second, water year October 1956 to September 1957

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.

98

100

98

104

127

104

198

142

113

101

98

94

87

78

90

99

101

99

96

78

76

*105

186

164

140

134

122

104

93

115

120

3,464

112

-16.8

Nov.

582

251

335

260

226

193

170

164

162

151

140

147

170

155

151

137

140

462

358

237

208

470

390

293

248

220

220

210

188

181

7,219

241

-24.4

Dec.

151

147

168

- 181

166

164

168

159

374

366

242

700

528

502

675

1,050

840

650

555

502

506

532

87O

700

810

650

478

462

406

350

320

14,372

464

+14.7

Jan.

299

248

231

273

270

2OO

279

286

273

286

234

226

205

202

223

220

226

205

168

190

*200

282

2,960

810

537

402

382

366

398

350

343

11,774

380

-7.3

Feb.

343

310

267

374

418

346

328

328

382

1,050

700

500

*400

350

310

290

280

280

280

260

240

240

250

280

320

450

1,500

800

-

11,876

424

+0.8

Mar.

6OO

500

450

40O

370

350

370

45O

700

550

450

470

462

454

478

1,500

728

*573

528

582

586

650

528

478

450

438

426

4O6

378

350

320

15,775

509

-25.5

Apr.

317

1,300

900

600

1,330

5,550

2,000

1,450

2,040

*1,410

1,190

1,050

930

840

728

675

625

591

600

582

542

502

474

458

430

498

482

422

598

550

27,064

902

-29.1

May

313

289

273

264

248

251

242

228

220

208

188

202

242

242

*410

532

240

200

195

412

650

402

313

313

240

195

202

195

179

147

142

8,177

264

-16.7

June

132

158

159

159

147

142

138

124

107

115

125

125

125

124

109

94

105

118

118

115

112

loo

90

100

110

130

140

*129

127

105

5,662

122

-26.7

July

92

92

88

77

64

64

62

71

99

92

84

81

80

110

87

88

84

87

84

69

56

75

88

88

87

87

80

66

114

142

124

2,660

85.8

-25.7

A'lg.

98

88

74

61

74

80

84

84

87

88

80

84

84

86

94

88

70

55

154

80

148

172

117

74

66

284

157

110

98

94

77

3,070

99.0

-23.4

Sept.

64

60

80

*94

98

84

73

58

71

84

104

96

92

80

64

84

198

134

104

102

156

98

107

104

96

90

85

80

60

65

2,765

92.2

-23.6

Adjusted for diversion and change In reservoir contents

Mean 

Cfsm 

In.

95.2 

0.365 

0.42

217 

0.831 

0.93

Calendar year 1956: 

Water year 1956-57;

479 

1.84 

2.12

373 

1.43 

1.65

425 

1.63 

1.70

484 

1.85 

2.13

Observed

873 

5.54 

3.73

247 

0.946 

1.09

Max 3,010 nin 74 Mean 4*8 

Max 3,350 nin 55 Mean 3°?

95.5 

0.365 

0.41

62.1 

0.238 

0.27

75.6 

0.290 

0.33

68.6 

0.263 

0.29

Adjusted

Mean 439 Cfsm 1.68 In. 22.91 

Mean 29O Cfsm 1.11 In. 15.07

Peak discharge (base, 4,OOO cfs).--Jan. 25 (time unknown) about 4,500 cfs.

* 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 Nov. 12, Feb. 1O to Mar. 10, Apr. 2-4, June 20-27, Sept. 26-30; discharge estimated on basis of records for stations near Thomaston.
254 HOUSATONIC RIVER BASIN

Reservoirs in Housatonie River basin

Lake Candlewood (Rocky River Reservoir) on Rocky River, lat 41°35'00", long 73°26'00",

2 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 Housatonie 

River during off peak power periods. Usable capacity, 6,210,000,000 cu ft. Records 

available, August 1928 to September 1957. 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. Completed1 in 1933 for 

storage of water for municipal supply. Usable capacity, 77,000,000 cu ft. Records 

available, February 1933 to September 1957. Records furnished by Bureau of Engineering, 

city of Waterbury, Conn.

Lake Lillinonah on Housatonie River, lat 41°26'52", long 73°17'49", in Litchfield County, 

2".3 miles north of Newtown, Fairfield County, Conn. Drainage area, 1,392 sqmi. Completed in 1955 for storage of water for power. Usable capacity, 219,000,000 cu ft. 

Records available, February 1955 to September 1957. Records furnishec1 by The Connecticut Light & Power Co.

Lake Zoar on Housatonie River, lat 41°23'05", long 73°09'55", at Stevenson, Fairfield 

County, Conn. Drainage area, 1,545 sq mi.' Completed in 1919 for storage of water for 

power. Usable capacity, 331,000,000 cu ft. Records available, August 1928 to September 

1957. 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 

1957. Morris Reservoir, lat 41°40 1 29", long 73°08'39", Similes 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 1957. Wigwam Reservoir, lat 41°39'50", 

long 73°07'41", 3 miles west of Thomaston, Litchfield County, Conn. Drainage area, including Pitch and Morris Reservoirs, 18.1 sq mi. Total capacity, 97,000,000 cu ft. 

Records available, May 1918 to September 1924, September 1928 to September 1957. Records furnished by Bureau of Engineering, city of Waterbury, Conn.

Month-end contents, water year October 1956 to September 1957

Date

Calendar year 1956.....

Mar. 31..................

Sept. 30. .................

Water year 1956-57.....

Dec. 31.. ................

Calendar year 1956.....

Sept. 30. .................

Water year 1956-57.....

Contents 

(m.o.f.)

Change In 

contents 

(equivalent 

In cfs)

Lake Candlewood 

(Rocky River Reservoir)

5,499

5,525 

6,016 

6,016

-

5,583 

5,666 

5,702 

5,991 

5,871 

5,750 

5,428 

4,993 

4,761

-

+ 9.0 

+190.2 

0

+22.4

-161.7 

+34.3 

+13.4 

+111.5 

-44.8 

-46.7 

-120.2 

-16E.4 

-89.5

-23.4

Lake Zoar

307.9 

285.1 

317.0 

285.1

-

235.7 

307.9 

271.6 

303.3 

307.9 

303.3 

321.6 

303 . 3 

285.1

-

-8.5 

+ 12.3 

-11.9

-1.4

-18.4 

+29.8 

-13.6 

+ 12.2 

+1.7 

-1.3 

+ 6.8 

-6.6 

-7.0

- .7

Contents 

(m.c.f.)

Shepaug

73.2 

48.3 

96.1 

97.8

-

97.6 

98.5 

96.7 

96.7 

95.9 

77.4 

46.7 

24.4 

26.1

-

Change In 

contents 

(equivalent 

In cfs)

Reservoir

-9.3 

+18.4 

+ .6

+ .2

-.1 

+ .4 

-.7 

0 

-.3 

-7.1 

-11.5 

-8.3 

+ .7

-1.5

Pitch, Morris, and 

Wigwam Reservoirs

486.3 

497.1 

498.2 

545.2

-

525. 7 

553.2 

554.2 

553.6 

550.7 

515.7 

487.9 

449.5 

391.6

-

+4.0 

+ .4

+17.5

+ .7

-7.3 

+ 11.4 

+ .4 

-.2 

-1.1 

-13.5 

-10.4 

-14.3 

-22.3

-3.0

Contents 

(m.c.f. )

Lake Lllll

2,841 

2,935 

2,943 

2,935

-

2,877 

2,958 

3,127 

3,096 

3,003 

2,735 

2,965 

3,049 

3,018

-

Change In 

contents 

(equivalent 

In cfs)

nonah

+35.1 

+3.1 

-3.0

-.9

-21.7 

+33.5 

+63.1 

-12.0 

-34.7

-103.4 

+85.9 

+31.4 

-12. C

+5.6
SAUGATUCK RIVER BASIN 255

Saugatuck River near Westport, Conn.

Location.--Lat 41°10'15", long 73°22'00", 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 5^ miles upstream from 

mouth.

Drainage area. 77.5 sq mi.

Records available. September 1932 to September 1957.

Gage.--Water-stage recorder. Datum of gage is 18.16 ft above mean sea level, datum of 

1929.

Average discharge. 25 years, 143 cfs (adjusted for storage in and diversion from Saugatuck Reservoir since October 1941).

Extremes. Maximum discharge during year, 1,070 cfs Apr. 6 (gage height, 5.78 ft); minimum, 0.8 cfs July 9 (gage height, 1.92 ft); minimum daily, 1.8 cfs July 9.

1932-57: Maximum discharge, 14,800 cfs Oct. 16, 1955 (gage height, 15.93 ft, from 

high-water marks in gage house), from rating curve extended above 2,400 cfs on basis 

of computation of peak flow over dam at gage height 10.28 ft and contracted-opening 

determination of peak flow; minimum, 0.2 cfs Oct. 19, 1953; minimum gage height, 

1.92 ft Oct. 19, 1953, and July 9, 1957; minimum daily, 1.0 cfs Aug. 11, 1939.

Remarks.--Records good. Flow regulated by storage and diversion at Saugatuck Reservoir 

(total capacity, 11,900,000,000 gal) and Aspetuck Reservoir. At Aspetuck Feservoir,- 

Bridgeport Hydraulic Co. diverts an indeterminable amount of water for domestic supply 

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 table water year 1956-57 (gage height, in feet, and dis 

in cubic feet per second)

harge

2.0

2.1

2.2

2.3

2.5 

2.7

3.0 

3.5 

4.0 

5.0 

5.7

195

335

700

1,020

Discharge, in cubic feet per second, water year October 1956 to September 1S57

Day

1

2

3

4

5

6

7

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

28

29

30

31

Total

Mean

(t)

Oct.

11

10

*9.3

8.4

7.5

9.8

29

21

20

10

13

11

12

12

12

12

12

12

16

9.8

11

11

51

48

25

21

18

17

19

16

26

520.8

16.8

-1-14.8

Nov.

IHB" 234

109

75

55

45

42

41

41

37

33

33

36

32

29

2526"

104

83

58

52

96

72

49

48

*49

46

43

41

40

1,832

61.1

+52. 6

Dec.

35

34

35

35

32

31

31

30

60

80

55

69

74

145

290

279

234

163

114

98

107

114

172

156

148

116

90

82

80

77

68

3,134

101

+85.8

Jan.

62

50

42

42

44

41

41

41

40

43

37

35

35

26

30

30

29

29

28

27

*26

29

220

160

100

77

96

102

95

88

83

1,848

59.6

+44. 3

Feb.

85

90

78

96

124

105

102

103

131

254

262

175

139

124

114

105

100

91

91

90

*77

72

69

71

72

99

350

248

-

3,517

126

+4.1

Mar.

208

182

182

160

128

113

111

118

190

203

160

133

*118

111

107

226

2755

170

146

158

158

133

120

111

107

91

90

85

82

85

75

4,264

138

+6.1

Apr.

69

153

203

144

448

995

720

540

620

465

369

3EO

290

254

226

190

175

168

178

168

158

135

*111

109

98

102

103

95

93

83

7,782

259

+6.4

May

68

61

54

45

43

48

48

36

28

23

20

23

28

22

102

54

42

42

40

54

82

59

50

100

75

53

45

38

28

22

20

1,453

46. 9

+17.1

June

19

19

18

17

16

16

17

12

15

14

12

12

12

11

11

10

10

9.8

9.3

8.8

8.4

8.4

8.0

8.0

7.5

8.0

8.4

8.4

8.8

8.4

351.2

11.7

+0.2

July

8.0

7.5

7.5

8.0

15

8.0

7.5

3.2

1.8

6.1

5.8

5.8

6.8

8.4

8.4

7.5

6.8

6.4

6.1

5.8

5.8

5.8

5.8

5.8

5.8

5.8

5.8

6.8

11

15

11

224.8

7.25

-0.90

Aug.

8.8

7.5

7.2

7.2

*7.2

6.4

6.1

6.1

6.1

5.8

5.8

5.8

5.8

5.4

6.1

6.8

6.4

6.1

6.1

6.4

6.8

7.4

6.5

6.2

7.0

13

9.0

7.0

6.5

8.8

7.8

215.1

6.94

-2.45

Sept.

7.0

7.4

7.0

6.5

7.0

7.4

6.5

6.5

6.5

*6_.2

7.0

6.5

6.5

6.5

6.5

7.0

9.0

8.3

7.0

7.4

8.8

7.8

8.8

8.8

7.8

7.4

7.0

7.0

7.0

7.0

217.1

7.24

-3.71

Adjusted for diversion and change in contents in Saugatuck Reservoir

Mean 

Cfam 

In.

31.6 

0.408 

0.47

114 

1.47

1.64

Calendar year 1956: 

Water year 1956-57'-

187 

2.41 

2.78

104 

1.34 

1.54

130 

1.68 

1.75

144 

1.86 

2.14

265 

3.42

64.0 

0.826 

0.95

Observed

Max 510 Mln 4.7 Mean 102 

Max 995 Mln 1.8 Mean 69.5

11.9 

0.154 

0.17

6.35 

0.082 

0.09

4.49

0.058 

0.07

3.53

0.046 

0.05

Adjusted

Mean 125 Cfam i.ei In. 21.90 

Mean 88.4 Cfsm 1.14 In. 15.47

Peak discharge (base, 900 cfs). Apr. 6 (2 p.m.) 1,070 cfs (5.78 ft).

* Discharge measurement made on this day.

t Change in contents and diversion, equivalent in cubic feet per second, from Saugatuck Reservoii 

for domestic water supply. No adjustments made for Aspetuck Reservoir.
256 DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Measurements of streamflow made at points other than regular gaging stations in the 

area covered by this report 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 measurement when correlated 

with the simultaneous discharge of a nearby stream 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.

Discharge measurements made at points other than gaging stations during water year 1957

Stream Tributary to Location

Drainage 

area 

(sq mi)

Plscataqua River basin, N. H.

Bellamy River Plscataqua 

River .

Lat 43°10,50", long 7O°56'45", at 

bridge at Fancy Hill, 3f miles 

southwest of Dover.

"

Measured 

previously 

(water 

years)

Date Discharge 

(cfs)

Apr. 15 

July 15 

July 22

43.0 

2.50 

1.80

Westport River basin

Shingle

Island

River.

Copicut River

Westport

River.

Shingle

Island

River.

Lat 41°40 r 54", long 71°01'04", at

bridge on Old Fall River Rd. ,

0.7 mile east of Hixville.

Lat 41°41'00", long 71°01'40", at

bridge on Old Fall River Rd. ,

0.3 mile northeast of Hixville.

5.10

7.09

July 30

July 30

*0.10

*.864

Taunton River basin, Mass.

Pure hade

Brook.

Dam Lot

Brook.

Rattlesnake

Brook.

Taunton River

.... do .......

Assonet River

Lat 41°55'35", long 70°56'16", at

bridge at Purchade St., 2.6 mile

northwest of Middleboro.

Lat 41°54'45", long 71°O2'54", at

bridge at Warren St. , 2j miles

east of Taunton.

Lat 41°46'36", long 71°05'23", at

bridge at South Main St., 1.7

miles southwest of Assonet.

2.79

2.54

3.74

July 29

July 31

July 29

3.81

*.68

.18

Connecticut River basin, Mass

Broad Brook. .

Harris Brook.

North Branch

Mill River.

Arm Brook. . . .

Still Brook. .

Manhan River.

Higher Brook.

Connecticut

River.

Powdermill

Brook.

Muddy Brook. .

Lat 42°11'36", long 72°40'31", at

Rock valley St., at Rock Valley,

2j miles west of Holyoke.

Lat 42°11'24", long 72°28'44", at

Church and Rood Sts. , 1 mile

west of Ludlow Center.

Lat 42°07'02", long 72°28'18", at

Wilbraham Rd., 2.1 miles west

of Wilbraham.

Lat 42°08'38", long 72°44'22", at

Lockhouse Rd. , 0.25 mile above

mouth and 1^ miles north of

Westfield.

Lat 42°02'31", long 72°41'00", at

Pine St., 3 miles southwest of

West Agawam.

1.44

2.77

7.61

4.33

5.33

Aug. 14

Sept. 5

Aug. 15

Sept. 6

Aug. 15

Sept. 6

Aug. 14

Sept. 5

Aug. 15

Sept. 5

 0.07

. .'4

*.44

.18

.80

.70

*.58

.59

*.57

.41

Menunketesuck River basin, Con

Killingworth

Reservoir

Outlet.

Menunketesuck

River.

Just below Killingworth Reservoir,

near Killingworth.

- 1941-56

1941-56

1941-56

June 27

Aug. 7

Sept. 4

0.97

.46

.01

Quinnipiac River basin, Conn.

Eightmile

River.

Quinnipiac

River.

Lat 41°36'54", long 72°55'24", at

bridge on woods road, 1.6 miles

southeast of Southington.

6.42 1954-56 Dec. 6

Feb. 5

Mar. 4

Apr. 25

Apr. 30

May 22

May 23

June 24

5.26

11.4

10.3

12.3

12.1

11.9

10.7

5.96

Housatonic River basin

Wassaic Creek

Webatuck

Creek.

Tenmile River

Naugatuck

River.

Tenmile River

.... do .......

Housatonio

River.

.... do .......

Lat 41°47'36", long 73°33'06", at

bridge, 0.7 mile southeast of

Wassaic, N. Y., and l.O mile

above confluence with Webatuck

Creek.

Lat 41°46'48", long 73°33'12", at

bridge, 20O ft above confluence

with Wassaic Creek and 1.6 miles

southwest of South Amenia, N. Y.

Lat 41°46'45", long 73°33'34", at

Dutchess County highway bridge

A-30, 0.2 mile below confluence

of Wassaic and Webatuck Creeks

and 1.6 miles south of Wassaic,

N. Y.

Lat 41°40'25", long 73°04'13", at

U. S. highway bridge on Route 6,

at Thomaston, Conn.

36.6

81.0

120

107

1956

1956

1956

Apr. 4

June 25

Aug. 9

Aug. 15

4

Apr. 4

June 27

Aug. 9

Aug. 14

Apr. 4

June 27

Aug. 8

Aug. 14

Sept. 3

49.9

*4.95

*2.04

*.14

134

*8.82

 4.77

*3.39

202

*15.3

*5.90

6.58

15.4
DISCHARGE MEASUREMENTS AT POINTS OTHER THAN GAGING STATIONS

Discharge measurements made at points other than gaging stations during 

water year 1957 Continued

Stream Tributary to Location

Drainage 

area 

(sq mi)

Measured 

previously 

(water 

years)

Date

Discharge 

(cfs)

Housatonic River basin Continued

Bladens River

Do........

Naugatuok

River.

Lat 41°23'53", long 73°03'25", at

State highway bridge on Route

67, 0.9 mile upstream from mouth,

near Seymour, Conn.

mile upstream from mouth, at

Seymour, Conn.

9.8 Sept. 3 2.46

3.84

Rippowam River basin, N. Y.

Mill River... Rippowam

River.

Lat 41°10'42", long 73°33'14", at

bridge on Trinity Pass Rd. , 1.0

mile south of Scott Corners.

13.2 1956 Nov. 14

Mar. 7

May 2

May 23

June 12

Aug. 29

*8.34

18.0

*8.19

*9.00

*.95

*.37

Mianus River basin, N. Y.

Mianus River. Long Island 

Sound.

Lat 41°12'05", long 73°38'00", at 

bridge on Middle Patent Rd. , 0.6 

mile east of Bedford.

10.7 1903,1956 Nov. 14 

Jan. 28 

Mar. 12

May 2 

May 23

June 12

Aug. 29

*7.64 

16.3 

19.0

*10.9 

*9.99 

*2.85

*1.34

Byram River basin,

Byram River. . Long Island 

Sound.

Lat 41°07'28", long 73°42'09", at 

bridge on State Highways 22 and 

128, 0.6 mile east of Armonk.

3.78 1956 Nov. 14 

Jan. 28 

Mar. 7

May 2 

May 23 

June 12

Aug. 29

*1.95

5.50 

6.80

*4.12 

*2.91 

*.90

*.ll
INDEX

Page 

Aberjona River at Winchester, Mass.... 113

Accuracy of field data and computed

results. ........................ 8

Acre-foot , definition of .............. 2

Adamsville Brook at Adamsville , 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

Ammonoosuc River, at Bethlehem

Junction, N. H, ................. 162

near Bath, N. H. .................... 163

Androscoggin 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-N. H. ,

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. . . . . 186

below Surry Mountain Dam, near

Keene, N. H. .................... 183

near Gilsum, N. H. .................. 182

South Branch, at Webb , near Marlboro, N. H.. .................... 185

Assabet River at Maynard, Mass........ 105

Athol , Mass . , East Branch Tully River

near. ........................... 191

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. .......... 167

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............................. 233, 234

Barre , Mass. , Ware River near. ........ 200

Bath, N. H. , Ammonoosuc River near.... 163

Beacon Falls, Conn. , Naugatuck River

at.............................. 253

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

Bethlehem Junction, N. H. , Ammonoosuc

River at ........................ 162

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

Kennebec River at ................... 49

Birch Hill Reservoir, Mass., contents

of. ........................... .233,234

Black River at North Springfield, Vt.. 174 

Blackberry River at Canaan, Conn...... 240

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 ...................... .233,234

Branch River at Forestdale, 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.......

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

126

54

80

215

175

146

221

110

240

Canton, Mass., East Branch Neponset

River at......................... 118

Caribou Lake, Maine, contents of....... 41

Carrabasset River near North Anson,

Maine............................ 50

Centerdale, R. I., Woonasquatucket

River at......................... 128

Cfs-day, definition of................. 2

Chamberlain Lake, Maine, contents of... 41 

Charlemont, Mass., Deerfield River at.. 195 

Charles River, at Charles River Village,

Mass. ............................ 114

at Waltham, Mass..................... 116

Charles River basin, Mass., gagingstation records in..............114,116

Charles River Village, Mass., Charles

River at......................... 114

Cherryfield, Maine, Narraguagus River

at............................... 28

Chesuncook Lake, Maine, contents of.... 41

Chicopee River at Indian Orchard, Mass. 207 

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

Clinton, Conn., Menunketesuck River

near............................. 235

Clinton, Mass., South Branch Nashua

River at......................... 102

Cobble Mountain Reservoir, Mass., contents of........................233,234

Cobbosseecontee Stream at Gardiner,

Maine............................ 53

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

Cold River at Drewsville, N. H......... 178

Coldbrook, Mass., Ware River at........ 201

Coltsville , Mass., East Branch

Housatonic River at.............. 237

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

Comerford Station Pond, Vt., contents

of.............................. 233,234

Computations, accuracy of results of... 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............... 198

at North Stratford, N. H............. 155

at North Walpole , N. H............... 177

at Thompsonville, Conn............... 214

at Turners Falls , Mass............... 194

at Vernon, Vt........................ 181

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

at White River Junction, Vt.......... 169

below Indian Stream, near Pittsburg,

N. H............................. 154

near Dalton, N. H.................... 157

Connecticut River basini Conn.-Mass.-

N. H.-Vt., gaging station records

in..............................153-232

reservoirs in.......................233-234

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....... 233

Cubic feet per second per square nile,

definition of.................... 2

Cubic Foot per second, definition of... 2

Dalton, N. H., Connecticut River near... 157

Data, accuracy of...................... 8

explanation of................... 3-8

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

259
INDEX

Page 

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

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

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

Deerfield River, at Charlemont, Mass.. 195 

near West Deerfield, Mass........... 197

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................... 257

Connecticut River basin............. 256

Housatonic River basin.............256-257

Menunketesuck River basin. ........... 256

Mianus River basin.................. 257

Piscataqua River basin.............. 256

Quinnipiac River basin.............. 256

RIppowam River basin. .............".. 257

Taunton River basin................. 256

Westport River basin................ 256

Mote .--Streams for which only discharge measurements are available 

are not entered by name in this 

index. 

Dover-Foxcroft, Maine, Piscataquis

River near...................... 12,33

Drainage area, definition of.......... 3

Drewsville, N. H., Cold River at...... 178

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

East Branch (Farmington River) Reservoir, Conn., contents of....... 233 ,234

East Greenwich, R. I., Potowomut River 

near............................

East Hampton, Conn., Salmon River near

East Hartford, Conn., Hoekanum 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 Slain, Conn. 

East Branch, near North Lyme, Conn..

Elbow Lake, Maine, contents of........

Errol, N. H., Androscoggin River

at..............................

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

131

230

229

158

27

43

104

Falls Village, Conn., Housatonic River

at. ............................. 241

Farmington River, at Rainbow, Conn.... 224

West Branch above Still River, at

Riverton, Conn.................217-218

near New Boston , Mass ............. 216

First Connecticut Lake, N. H., contents of.......................233,234

First Roach Pond, Maine, contents of.. 54 

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

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

Flagstaff Lake, Maine, contents of.... 54

Flat River Reservoir, capacity of..... 129

Floods, special reports on............ 11

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

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.........

53

Gardiner, Maine, Cobbosseecontee

Stream at.....................

Gaylordsville , Conn., Housatonic

River at........................ 243J

Tenmile River near.................. 242

Gibbs Crossing, Mass., Ware River at.. 202 

Gilsum, N. H., Ashuelot River near.... 182

Goffstown, N. H., Piscataquog River

near............................ 96

South Branch Piscataquog River near. 95 

Goose Pond, N. H., contents of........ 233

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

Goss Heights, Mass., Middle Branch

Westfield River at............... 210

Grafton Pond, N. H. , contents of....... 233

Granby, Conn. , Salmon Brook near....... 223

Grand Lake, Maine, content,? of......... 41

Grand Lake Stream at Grand Lake

Stream, Maine.................... 23

Great Barrington, Mass., Green River

near............................. 239

Housatonic River near................ 238

Great Brook at Poquonock Bridge,

Conn. ............................ 135

Green River near Great Barrington,

Mass............................. 239

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

Groveton, N. H. , Upper Ammonoosuc River

near............................. 156

Gulf Island Pond, Maine, contents of... 64

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

Hardwick, Mass., East Branch Swift

River near....................... 204

Harriman Reservoir, Vt., contents

of..............................233,234

Hartford, Conn., North Branch Park

River at........................ 226,227

Park River at........................ 228

South Branch Park River at........... 225

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

Hillsboro, N. H., Beards B^ook near.... 88

Hinsdale, N. H., Ashuelot River at..... 186

Hoekanum River near Eas-t Hartford,

Conn............................. 229

Hop Brook near New Salem, Mass"......... 203

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

Hope Valley, R. I. , Wood R'.ver at. ..... 133

Houlton, Maine, Meduxnekeag River near. 21 

Housatonic River, at Falls Village,

Conn............................. 241

at Gaylordsville, Conn............... 243

at Stevenson, Conn................... 248

East Branch, at Coltsville, Mass..... 237

near Great Barrington, Mass.......... 238

Housatonic River basin, Conn.-Mass.,

gaging station records in.......237-253

reservoirs in........................ 254

Huntington, Mass., West Branch Westfield River at................... 211

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

graph of............................. 12

Indian Orchard, Mass., Chieopee River

at. .............................. 207

Indian Pond , Maine, contents of........ 54

Ipswich River, at South MIddleton,

Mass............................. Ill

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

Ipswich River basin, Mass., gagingstation records in..............111-112

Jamaica, Vt., West River at............ 179

Jewett City, Conn., Quinebaug River at.12,151

Keene, N. H. , Ashuelot River near...... 183

Otter Brook near..................... 4,184

Kenduskeag Stream near Kenduskeag,

Maine............................ 40

Kennebago Lake, Maine, contents of..... 64

Kennebec River, at Bingham, Maine...... 11,49

at Indian Pond, Maine................ 11

at Moosehead, Maine .................. 44

at The Forks, Maine .................. 45

Kennebec River basin, Maine, gagingstation records in............... 43-53

reservoirs in........................ 54

Kettle Brook at Worcester, Mass........ 123

147 Killingly, Conn. , Five Mile River

at. .............................. 149

Knightville, Mass., Sykes Brook at..... 209

Westfield River at................... 208

Knightville Reservoir, Mass., contents

of..............................233,234

Lake Auburn , Maine , contents of........ 64

Lake Candlewood (Rocky River Reservoir),

Conn., contents of............... 254

Lake Chaubunagungamaug, capacity of.... 147

Lake Cochituate Outlet at Cochituate,

Mass............................. 106
INDEX 261

Page 

Lake Francis, N. H., contents of.....233,234

Lake Lillinonah, Conn,, contents of... 254 

Lake Wentworth, N. H., contents of.... 109

Lake Winnipesaukee at The Weirs, N. H. 81 

Lake Winnipesaukee Outlet at Lakeport,

N. H............................ 82

Lake Zoar, Conn., contents of......... 254

Lakes and Reservoirs:

Ambajejus Lake, Maine............... 41

Auburn, Lake, Maine................. 64

Aziscohos Lake, Maine ............... 64

Barkhampsted Reservoir, Conn.......233,234

Birch Hill Reservoir, Mass.........233,234

Blackwater Reservoir, N. H.......... 109

Borden Brook Reservoir, Mass.......233,234

Brassua Lake, Maine ................. 54

Candlewood, Lake, Conn.............. 254

Caribou Lake, Maine ................. 41

Chamberlain Lake, Maine............. 41

Chesuncook Lake, Maine .............. 41

Cobble Mountain Reservoir, Mass....233,234

Comerford Station Pond, Vt.........233,234

Crystal Lake, N. H.................233,234

East Branch (Farmington River)

Reservoir, Conn................233,234

Edward MacDowell, Reservoir, N. H... 109 

Elbow Lake, Maine ................... 41

First Connecticut Lake, N. H.......233,234

First Roach Pond, Maine ............. 54

Flagstaff Lake, Maine............... 54

Francis, Lake, N. H................233,234

Franklin Falls Reservoir, N. H...... 109

Goose Pond, H. H...................233,234

Grand Lake, Maine................... 41

Gulf Island Pond, Maine ............. 64

Harriman Reservoir, Vt. ............233 ,234

Indian Pond, Maine .................. 54

Kennebago Lake , Maine ............... 64

Knightville Reservoir, Mass........233,234

Lillinonah, Lake, Conn.............. 254

Ludlow Reservoir, Mass.............233,234

Mansfield Hollow Reservoir at

Mansfield Hollow, Conn.......... 140

Mascoma Lake, N. H.................233,234

Massabesic Lake, N. H............... 109

Merrymeeting Lake, H. H............. 109

Moore Reservoir, H. H..............233,234

Moose Pond , Maine ................... 41

Moosehead Lake at East Outlet,

Maine........................... 54

Mooselookmeguntic Lake, Maine ....... 64

Morris Reservoir, Conn.............. 254

Moxie Pond, Maine ................... 54

Nepaug Reservoir, Conn.............. 234

Newfound Lake, H. H................. 109

North Twin Lake, Maine.............. 41

Otis Reservoir, Mass ...............233,234

Pemadumcook Lake, Maine ............. 41

Pennesseewassee Lake, Maine......... 64

Pitch Reservoir, Conn................ 254

Quabbin Reservoir, Mass............233,234

Rangeley Lake, Maine ................ 64

Richardson Lakes, Maine............. 64

Ripogenus Lake, Maine ............... 41

Round Pond, Maine ................... 41

Sebec Lake, Maine ................... 41

Second Connecticut Lake, H. H......233,234

Second Lake, Maine .................. 41

Second Roach Pond , Maine............ 54

Shenipsit Lake, Conn................ 234

Shepaug Reservoir, Conn............. 254

Somerset Reservoir, Vt.............233,234

South Twin Lake, Maine .............. 41

Spencer Lake, Maine................. 54

Sunapee Lake , N. H................. 233,234

Surry Mountain Reservoir, N. H..... 233,234

Telos Lake, Maine ................... 41

Thompson Lake, Maine................ 64

Tower Hill Pond, N. H............... 109

Tully Reservoir, Mass.............. 233,234

Umbagog Lake , Maine................. 64

Union Village Reservoir, Vt.... .... .233,234

Watershops Pond, Mass..............233,234

Wentworth, Lake, H. H.

Whigville Reservoir, Conn.........

Wigwam Reservoir, Conn............

Wilson Pond, Maine................

Winnipesaukee, Lake,at The Weirs, 

N. H..........................

Wyman Pond, Maine .................

Zoar, Lake, Conn..................

109

234

254

41

81

54

254

Lakeport, H. H., Lake Winnipesaukee

Outlet at........................ 82

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

Lanesville, Conn., Still River near.... 244

Leadmine Brook near Thomaston, Conn.... 252

Leominster, 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..233,234

MacDowell Reservoir, N. H., contents

of............................... 109

Machias River (tributary to Aroostook

River) near Ashland, Maine....... 19

Machias River (tributary to Atlantic

Ocean) at Whitneyville, Maine.... 26 

Machias River basin, Maine, gagingstation records in............... 26-27

Mad River at Winsted, Conn............. 219

Manchester, N. H., Merrimack River

below............................ 97

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

Map of the United States............... 9

Marlboro, H. H., South Branch Ashuelot

near....................... 185

Mascoma Lake, N. H., contents of....... 233

Mascoma River, at Mascoma, H. H........ 171

at West Canaan, N. H................. 170

Mascoma River basin, N. H. , lakes and

ponds in, contents of........... 233,234

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............................. 235

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

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

Merrimack River, at Franklin Junct'on,

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, H. H., contents of.. 109 

Mill River at Northhampton, Mass....... 4,199

Millers River, at Erving, Mass......... 193

at South Royalston, Mass............. 190

near Winchendon, Mass................ 188

Millinocket Lake, capacity of.......... 20

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

Montague City, Mass., Connecticut

River at......................... 198

Moore Reservoir, N. H., contents of...233,234

Moose Pond, Maine, contents of. 

Moose River, at St. Johnsbury, Vt.

41 

160 

at Victory, Vt............"........... 159

Moosehead, Maine, Kennebec River at....

Moosehead Lake at East Outlet, Maine..,

Mooselookmeguntic Lake, Maine, contents of.........................

Moosup River at Moo.sup, Conn...........

Morris Reservoir, Conn., contents of...

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

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

Mount Hope River near Warrenville,

Conn.....'........................

Mousam River near West Kennebunk,

Maine............................

Moxie Pond, Maine, contents

of...............................

44

43

64

150

254

192

115

139

72

54

54
262 INDEX

Page 

Narraguagus River at Cherryfield,

Maine,.......................... 28

Nashua River, at East Pepperell, Mass. 104 

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

Natchaug River at Willimantic, Conn... 141 

Naugatuck River, at Beacon Falls,

Conn............................ 253

East Branch, at Torrington, Conn.... 250

near Thomaston, Conn................ 251

West Branch, at Torrington, Conn.... 249

Nepaug Reservoir, Conn., contents of.. 234 

Neponset River, at Norwood, Mass...... 11V

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

Neponset River basin, Mass., gagingstation records in.............117-118

New Boston, Mass., West Branch Farmington River near............... 216

New Salem, Mass., Hop Brook near...... 203

Newfane, Vt., West River at........... 180

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., Quinsigatnond

River at........................ 124

North Hartland, Vt., Ottauquechee

River at........................ 172

North Lyme, Conn., East Branch Eightmile River near................. 232

North Nashua River near Leominster,

Mass............................ 100

North Plain, Conn., Eightmile River at 231 

North River at Shattuckville, Mass.... 196

North Springfield, Vt., Black River at 174 

North Stratford, N. H., Connecticut

River at........................ 155

North Twin Lake, Maine, contents of... 41 

North Walpole, N. H. , Connecticut

River at. ....................... 177

North Whitefield, Maine, Sheepscot

River at........................ 42

Northampton, Mass., Mill River at...., 4,199

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

Ompotnpanoosuc River at Union Village,

Vt.............................. 166

Order, downstream, of listing

gaging stations................. 3

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

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

Otis Reservoir, Mass., contents of...233,234

Ottauquechee River at North Hartland,

Vt.............................. 172

Otter Brook near Keene , N. H.......... 4 ,184

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

Park River, at Hartford, Conn......... 228

North Branch, at Hartford, Conn....226-227

South Branch, at Hartford, Conn..... 225

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

Passadumkeag, Maine, Penobscot River

at.............................. 39

Passadumkeag River at Lowell, Maine... 38

Passumpsic River, at Passumpsic, Vt... 161 

East Branch, near East Haven, Vt.... 158

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, contents

of.............................. 64

Penobscot River at Old Town, Maine.... 11

Page

Penobscot River, at Passadumkeag, Maine. 39 

at West Enfield, Maine............... 37

East Branch, at Grindsto-ie, Maine.... 30

near Mattawamkeag, Maine............. 31

Stillwater Branch, at Stillwater,

Maine............................ 11

Penobscot River basin, Maine, gagingstation records in............... 30-40

reservoirs in........................ 41

Pequabuck River at Forestville, Conn... 4,222

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-Foxcroft, Maine ........... 12,33

Piscataquog River, near Goffstown,

N. H............................. 96

South Branch, near Goffstown, N. Y... 95 

Pitch Reservoir, Conn., coitents of.... 254

Pittsburg, N. H., Connecticut River,

near............................153,154

Pittsfield, Maine, Sebasticook River

near............................. 52

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

Plymouth, N. H., Pemigewasset River

at............................... 78

Pomperaug River at Southbury, Conn..... 247

Poquonock Bridge, Conn., G-eat Brook

at............................... 135

Potowomut River near East Greenwich,

R. I............................. 131

Presumpscot River at outlet of Sebago

Lake, Maine...................... 66

Priest Brook near Winchendin, Mass..... 189

Providence River basin, Mass.-R. I.,

gaging-station records in.......123-128

Publications, on streamflow by Geological Survey...................... 8-11

Putnam, Conn., Quinebaug R'ver at...... 148

Quabbin Reservoir, Mass., contents of.233,234 

Quaboag River at West Brimfield, Mass.. 206 

Quinebaug River, at Jewett City,

Conn.............................12,151

at Putnam, Conn...................... 148

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

at Westville, Mass................... 144

Quinnipiac River at Wallinsford,

Conn................ '. ............ 236

Quinsigamond River at Nort'i Grafton,

Mass............................. 124

Race Brook at Orange , Conn............. 11

Rainbow, Conn., Farmington River at.... 224

Randolph, Vt., Ayers Brook at.......... 167

Rangeley Lake, Maine, contents of...... 64

Reservoirs. See Lakes and Reservoirs. 

Richardson Lakes, Maine, contents of... 64 

Ripogenus Lake, Maine, contents of..... 41

Riverton, Conn., West Bran?h Farmington River at....................217-218

Robertsville, Conn., Still River at.... 220

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

Rocky River Reservoir, Com. See Lake

Candlewood. 

Round Pond, Maine, contents of........

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

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

Royal River at Yarmouth, Miine........

Rumford, Maine, Androscoggin River at. 

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

Runoff in inches, definition of.......

41

246

59

65

58

77

2

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 Brunswich............................. 16

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

at Ninemile Bridge, Maine............ 13
INDEX 263

St. John River below Fish River, at

Fort Kent, Maine ................ 18

St. John River basin, Maine, New

Brunswick, gaging-station records in......................... 13-21

St. Johnsbury, Vt., Moose River at.... 160

Salmon Brook near Granby, Conn........ 223

Salmon Falls River near South Lebanon,

Maine........................... 73

Salmon River near East Hampton, Conn.. 230 

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

Saugatuck River near Westport, Conn... 255 

Saxtons River at Saxtons River, Vt.... 176

Scantic River at Broad Brook, Conn.... 215

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.......................233,234

Second Lake, Maine, contents of....... 41

Second Roach Pond, Maine, contents of. 54 

Shattuckville, Mass., North River at.. 196 

Sheepscot River at North Whitefield,

Maine........................... 42

Shenipsit Lake, Conn., contents of.... 234

Shepaug Reservoir, Conn., contents of. 254 

Shepaug River, at Woodville, Conn..... 245

near Roxbury, Conn.................. 246

Shetucket River near Willimantic,

Conn............................ 142

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

Somerset Reservoir, Vt., contents of.233,234 

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

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

South Coventry, Conn., Willimantic

River near...................... 136

South Lebanon, Maine, Salmon Falls

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.............................. 190

South Twin Lake, Maine, contents of... 41 

Southbury, Conn., Pomperaug River at.. 247 

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. 248 

Still River (Connecticut River basin)

at Robertsville, Conn........... 220

Still River (Housatonic River basin)

near Lanesville , Conn........... 244

Sudbury River at Framingham Center,

Mass............................ 106

Sugar River at West Claremont, N. H... 173 

Sunapee Lake, N. H., contents of.....233 ,234

Suncook River at North Chichester,

N. H............................ 94

Surry Mountain Reservoir, N. H., contents of....................... 233,234

Swift River (Androscoggin River basin)

near Roxbury, Maine............. 59

Swift River (Connecticut River basin),

at West Ware, Mass .............. 205

Eisl Branch, near Hardwick, Mass.... 204

Sykes Brook at Knightville, Mass...... 209

Tarbell Brook near Winchendon, Mass... 187

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............................ 242

Terms and abbreviations, definition of 2-3

Thames River basin, Conn.-Mass.,

gaging-station records in......136-152

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

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

The Weirs, N. H. , Lake Winnipesaukee

at. .............................. 81

Thomaston, Conn., Leadmine Brook near.. 252 

Naugatuck River near................. 251

Thompson Lake, Maine, contents of...... 64

Thompsonville, Conn., Connecticut

River at......................... 214

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

Torrington, Conn, East Branch Naugatuck

River at......................... 250

West Branch Naugatuck River at 249 

Tower Hill Pond, N. H., contents of.... 109

Tully Reservoir, Mass., contents of...233,234 

Tully River, East Branch, near Athol,

Mass............................. 191

Turner Center, Maine, Nezinscot River

at............................... 60

Turner Falls, Mass., Connecticut

River at......................... 194

Umbagog Lake, N. H., contents of....... 64

Union River, West Branch, at Amherst,

Maine............................ 29

Union Willage, Vt., Ompompanoosuc

River at......................... 166

Union Village Reservoir, Vt., contents

of..............................233,234

Upper Ammonoosuc River near Groveton,

N. H............................. 156

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

Vernon, Vt., Connecticut River at...... 181

Victory, Vt., Moose River at........... 159

WSP, definition of.....................

Wading River, at West Mansfield, Mass..

near Norton, Mass ....................

Wallingford, Conn., Quinnipiac Riv?r

at....... ........................

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

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

at Gibbs Crossing, Mass..............

near Barre, Mass .....................

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

Warrenville, Conn., Mount Hope River

near.............................

Washburn, Maine, Aroostook River at....

Washington, R. I., South Branch Pa-«-

tuxet River at...................

Webster, Mass., French Riyer at........

Webster, N. H., Blackwater River

near.............................

Wells River, Vt., Connecticut River at. 

Wells River at.......................

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

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

Wentworth Location, N: H., Diamond

River near.......................

Wepawaug River at Orange, Conn.........

West Brimfield, Mass., Quaboag Riv<?r

at. ..............................

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

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

West Deerfield, Mass., Deerfield River

near.............................

West Enfield, Maine, Penobscot Rivsr

at. ..............................

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

River 

West River

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, n?ar

Westfield, Mass..................

Westfield River, at Knightville, Mass.. 

Middle Branch, at Goss Heights,

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

near Westfield, Mass .................

tributary to Connecticut 

at Jamaica, Vt..........

tributary to Long Island

147

91

164

165

165

192

55

11

206

170

173

197

37

103

168

72

179

11

180

205

134

312

208

210

213
INDEX

Westfield River, West Branch, at

Huntington, Mass................ 211

Westport, Conn., Saugatuck River near. 255 

Westville, Mass., Quinebaug River at.. 144 

Whigville Reservoir, Conn., contents

of.............................. 234

White River, at West Hartford, Vt..... 168

White River Junction, Vt., Connecticut

River at........................ 169

Whitneyville, Maine, Machias River

at.............................. 26

Wigwam Reservoir, Conn., contents

of.............................. 254

Williams River at Brockway Mills, Vt.. 175

Willimantic, Conn., Natchaug River at. 141

Shetucket River near................ 142

Willimantic River near South Coventry,

Conn............................ 136

Wilson Pond, Maine, contents of....... 41

Winchendon, Mass., Millers River near. 188 

Priest Brook near................... 189

Tarbell Brook near.................. 187

Winchester, Mass., Aberjona River at.. 113

Winnipesaukee River at Tilton, N. H... 

Winsted, Conn., Mad River rt..........

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., Blackstone River

at..............................

Worcester, Mass., Kettle Brook

at..............................

Work, division of.....................

scope of............................

Wytnan Pond, Maine, contents of........

Yantic River at Yantic, Conn.... 

Yarmouth, Maine, Royal Rivisr at.

83

219

133

132

76

138

245

128

127

123

2

1

54

152

65

U. S. GOVERNMENT PRINTING OFFICE: 1959 O - 50569Z