STREAMFLOW STATISTICS OF SELECTED 

STREAMS IN THE LOWER RED RIVER OF 

THE NORTH BASIN, NORTH DAKOTA, 

MINNESOTA, AND MANITOBA

By Tara Williams-Sether and Gregg J. Wiche

U.S. GEOLOGICAL SURVEY 

Open-File Report 98-21

Prepared in cooperation with the

RED RIVER WATERSHED MANAGEMENT BOARD and the

RED RIVER JOINT WATER RESOURCE BOARD

Bismarck, North Dakota 

1998
U.S. DEPARTMENT OF THE INTERIOR 

BRUCE BABBITT, Secretary

U.S. GEOLOGICAL SURVEY 

THOMAS J. CASADEVALL, Acting Director

Any use of trade, product, or firm names is for descriptive purposes only 

and does not imply endorsement by the U.S. Government.

For additional information Copies of this report can be

write to: purchased from:

District Chief U.S. Geological Survey

U.S. Geological Survey Branch of Information Services

Water Resources Division Box 25286

821 East Interstate Avenue Denver, CO 80225-0286

Bismarck, ND 58501-1199
CONTENTS

Abstract........................................................................................................................................................................ 1

Introduction.............................................................................................~^

History of the stream-gaging program in North Dakota..............................................................................................2

Explanation of station summaries................................................................................................................................2

Station description ................................................................................................................................................6

Statistics of monthly and annual mean discharges ...............................................................................................7

Monthly and annual flow duration........................................................................................................................8

Probability of occurrence of high or low discharges ............................................................................................8

Data considerations.....................................................................................^^

Period of record.....................................................................................................................................................9

References..........................................................................................................................................................^

Streamflow statistics ..................................................................................................................................................11

05064900 Beaver Creek near Finley, ND.......................................................................................................... 12

05065500 Goose River near Portland, ND........................................................................................................19

05066500 Goose River at Hillsboro, ND...........................................................................................................28

05067500 Marsh River near Shelly, MN...........................................................................................................37

05068000 Sand Hill River at Beltrami, MN ......................................................................................................46

05068500 SandHill Ditch at Beltrami, MN......................................................................................................53

05069000 Sand Hill River at Climax, MN ........................................................................................................60

05074500 Red Lake River near Red Lake, MN ................................................................................................69

05075000 Red Lake River at High Landing near Goodridge, MN....................................................................78

05076000 Thief River near Thief River Falls, MN ...........................................................................................87

05076500 Red Lake River at Thief River Falls, MN.........................................................................................97

05077500 Clearwater River near Leonard, MN .............................................................................................. 104

05077700 Ruffy Brook near Gonvick, MN.....................................................................................................Ill

05078000 Clearwater River at Plummer, MN................................................................................................. 118

05078230 Lost River at Oklee, MN.................................................................................................................127

05078500 Clearwater River at Red Lake Falls, MN........................................................................................134

05079000 Red Lake River at Crookston, MN................................................................................................. 143

05082500 Red River of the North at Grand Forks, ND................................................................................... 154

05083000 Turtle River at Manvel, ND............................................................................................................ 166

05083500 Red River of the North at Oslo, MN...............................................................................................173

05083600 Middle Branch Forest River near Whitman, ND............................................................................ 180

05084000 Forest River near Fordville, ND..................................................................................................... 187

05085000 Forest River at Minto,ND..............................................................................................................196

05087500 Middle River at Argyle, MN...........................................................................................................205

05088000 South Branch Park River near Park River, ND...............................................................................214

05089000 South Branch Park River below Homme Dam, ND .......................................................................221

05089100 Middle Branch Park River near Union, ND....................................................................................230

05089500 Cart Creek at Mountain, ND...........................................................................................................237

05090000 Park River at Grafton, ND ..............................................................................................................244

05092000 Red River of the North at Drayton, ND..........................................................................................257

05092200 Pembina County Drain 20 near Glasston, ND................................................................................266

05093000 South Branch Two Rivers at Pelan, MN.........................................................................................273

05094000 South Branch Two Rivers at Lake Bronson, MN ...........................................................................280

05095500 Two Rivers below Hallock, MN .....................................................................................................289

05096000 North Branch Two Rivers near Lancaster, MN ..............................................................................296

05096500 State Ditch 85 near Lancaster, MN.................................................................................................303

05098700 Hidden Island Coulee near Hansboro, ND .....................................................................................310

05098800 Cypress Creek near Sarles, ND.......................................................................................................317

05099100 Snowflake Creek near Snowflake, MB ...........................................................................................324

05099150 Mowbray Creek near Mowbray, MB..............................................................................................331
05099300 Pembina River near Windygates, MB.............................................................................................338

05099400 Little South Pembina River near Walhalla,ND..............................................................................345

05099600 Pembina River at Walhalla,ND......................................................................................................356

05100000 Pembina River at Neche, ND..........................................................................................................365

05100500 Herzog Creek near Concrete, ND...................................................................................................375

05101000 Tongue River at Akra,ND..............................................................................................................382

05101500 Tongue River at Cavalier, ND.........................................................................................................391

05102500 Red River Of The North at Emerson, MB......................................................................................398

FIGURES

1. Map showing location of streamflow-gaging stations in the lower Red River of the North Basin

for which streamflow statistics are published in this report..................................................................................4

2. Graph showing number of streamflow-gaging stations in North Dakota, 1901-94..............................................5

TABLES

1. List of streamflow-gaging stations in the lower Red River of the North Basin for which

streamflow statistics are published in this report..................................................................................................3

iv
DEFINITION OF TERMS

Climatic year is the 12-month period April 1 through March 31. The climatic year is designated by 

the calendar year in which it begins.

Cubic foot per second (ft /s) is the rate of discharge representing a volume of 1 cubic foot passing a 

given point during 1 second and is equivalent to 7.48 gallons per second or 448.8 gallons per minute or 

0.02832 cubic meters per second.

Discharge is the volume of water in the "natural" channel of a stream that passes a given point within 

a given period of time. Discharge often is used interchangeably with the term "streamflow".

Drainage area (of a stream at a streamflow-gaging station) is the area, measured in a horizontal plane, 

enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by 

gravity into the stream upstream from the station.

Drainage basin is a part of the surface of the Earth that is occupied by a drainage system, which 

consists of a surface stream or a body of impounded surface water together with all tributary surface 

streams and bodies of impounded surface water.

Gage height is the water-surface elevation referred to some arbitrary gage datum. Gage height often is 

used interchangeably with the more general term "stage", although gage height is more appropriate when 

used with a reading on a gage.

Gaging station is a particular site on a stream, canal, lake, or reservoir where systematic observations 

of hydrologic data are obtained.

Ground water is the water in the ground that is in the zone of saturation, from which wells, springs, 

and ground-water runoff are supplied.

Hvdrologic unit is a geographic area representing part or all of a surface drainage basin or distinct 

hydrologic feature as delineated by the Office of Water Data Coordination on the State Hydrologic Unit 

Maps; each hydrologic unit is identified by an eight-digit number.

Instantaneous discharge is the discharge at a particular instant of time.

Mean is the arithmetic average of a list of values.

Mean discharge is the arithmetic mean of individual discharges during a specific period.

Partial-record station is a particular site where limited streamflow data are collected systematically 

over a period of years.

Period of record is the time during which a stream-gaging station is in operation and for which the 

records are published.

Probability of occurrence is the likelihood that an event will occur. Probabilities are generally 

expressed as a decimal number between 0 and 1. If the probability is 0, the event will not occur; if the 

probability is 1, the event will occur absolutely. Probability also can be expressed as a percent, where 0 

percent corresponds to 0 probability and 100 percent corresponds to a probability of 1.
Recurrence interval is the average time interval between occurrences of a hydrologic event of a given 

or greater magnitude, usually expressed in years.

Regulation is the artificial manipulation of the flow of a stream.

Stage see "gage height"

Standard deviation is a measure of the variability of the values in a list of values.

Stream-gaging station is a gaging station where a record of discharge of a stream is obtained.

Streamflow see "discharge"

Surface water is the water on the surface of the earth.

Water year is the 12-month period October 1 through September 30. The water year is designated by 

the calendar year in which it ends and which includes 9 of the 12 months.

vi
STREAMFLOW STATISTICS OF SELECTED 

STREAMS IN THE LOWER RED RIVER OF 

THE NORTH BASIN, NORTH DAKOTA, 

MINNESOTA, AND MANITOBA

ByTara Williams-Sether anc/Gregg J. Wiche

ABSTRACT

Statistical summaries of streamflow data through water year 1994 for selected active and 

discontinued U.S. Geological Survey gaging stations for the Red River of the North Basin 

downstream of Halstad, Minnesota, to and including Emerson, Manitoba, are presented in this 

report. The summaries for each streamflow-gaging station include (1) station description, 

(2) graph of the annual mean discharge for the period of record, (3) statistics of monthly and 

annual mean discharges, (4) graph of the annual flow duration, (5) monthly and annual flow 

duration, (6) probability of occurrence of annual high discharges, (7) probability of occurrence of 

annual low discharges, (8) probability of occurrence of seasonal low discharges, (9) annual peak 

discharge and corresponding gage height for the period of record, and (10) monthly and annual 

mean discharges for the period of record.

INTRODUCTION

A part of the mission of the United States Geological Survey is the collection of systematic data to 

determine the quantity, quality, and use of surface and ground water. A total of 7,292 streamflow-gaging 

stations (as of 1994) were operated by the U. S. Geological Survey in the United States, Puerto Rico, and 

the Trust Territories of the Pacific Islands (Wahl and others, 1995). Of the 7,292 streamflow-gaging 

stations, 60 were operated in the Red River of the North Basin upstream of Emerson, Manitoba, excluding 

the Devils Lake Basin.

At streamflow-gaging stations, the water level in the river is monitored continually. A relation 

between water level and discharge is developed by making periodic discharge measurements throughout 

the range in water level. This relation is referred to as a station rating. A continuous record of streamflow 

is computed for each gaging station by using the water level record and the station rating.

Knowledge of the magnitude and time distribution of streamflow is essential for all aspects of water 

management and environmental planning. Federal, State, and local agencies responsible for the 

development and management of North Dakota's surface-water resources use this knowledge for making 

safe, economical, and environmentally sound water-resource planning decisions.

Streamflow statistics published in annual state water reports by the U. S. Geological Survey include 

records of daily mean discharge, annual high and low discharge, and annual mean discharge. Other 

statistics can be retrieved from U.S. Geological Survey computer files. Water resource managers may go 

to various sources to obtain the necessary statistics. These sources may only include active gaging stations 

listed in the most recent annual report and, thus, overlook information available for many discontinued 

gaging stations.
The purpose of this report is to provide a comprehensive publication summarizing streamflow 

statistics through water year 1994 for selected active and discontinued gaging stations for the Red River of 

the North Basin downstream of Halstad, Minnesota, to and including Emerson, Manitoba. Active and 

discontinued gaging stations listed in this report have a least 10 years of record. These stations are listed in 

table 1 and their locations are shown in figure 1.

HISTORY OF THE STREAM-GAGING PROGRAM IN NORTH DAKOTA

Much of the history of the stream-gaging program in North Dakota outlined in this report was written 

by Crosby (1970). However, the number of streamflow-gaging stations given in figure 2 may differ from 

the number given by Crosby (1970) because the type of gaging stations included may differ. The 

collection of systematic streamflow data began in 1882 when a gaging station was established on the Red 

River of the North at Grand Forks. This gaging station was a stage station; however, infrequent discharge 

measurements were made for navigational purposes. Stage data were obtained on the Missouri River at 

Bismarck in 1881-82 and in 1886-89 by the Missouri River Commission. As result of the National 

Reclamation Act of 1902 and the disastrous flood in 1897 in the Red River of the North Basin, the U.S. 

Geological Survey, in cooperation with the state of North Dakota, established and operated streamflowgaging stations from 1901-09 (fig. 2). Additional interest was created as problems with Canada 

concerning the division of waters along the international boundary resulted in the formation of the 

International Joint Commission in 1912. Eight streamflow-gaging stations were in operation in 1925 when 

State cooperation was discontinued (fig. 2). Only five federally operated gaging stations were continued. 

State cooperation resumed in 1931, but funds were limited from 1934-38. However, the Rivers and 

Harbors Act of 1927 and the Flood Control Acts of 1928 and 1936 resulted in the U.S. Army Corps of 

Engineers supporting a large expansion of the stream-gaging program. Forty-one gaging stations were in 

operation when the North Dakota-South Dakota U.S. Geological Survey Office was created on October 16, 

1944. Plans for the coordinated development of the waters of the Missouri River Basin, with respect to 

flood control, navigation, power, and irrigation, were formulated in 1943-44 by the U.S. Army Corps of 

Engineers, the Bureau of Reclamation, and the States in the Basin. These plans resulted in a rapid increase 

in the stream-gaging program, and, by 1947, 64 gaging stations were in operation in North Dakota. The 

number of gaging stations grew steadily from the late 1940's until the late 1960's, and, by 1969, 109 

gaging stations were in operation.

During 1969-76, the number of gaging stations in operation remained relatively stable. During the 

1970's, the U.S. Geological Survey established 25 additional gaging stations to monitor the quantity and 

quality of streamflow in drainage basins underlain by strippable lignite deposits (Haffield, 1981). By 

1979, about 145 gaging stations were in operation in North Dakota. During 1981-83, the number of 

gaging stations in operation declined rapidly, and, during 1984-87, the number declined slowly to about 

110. Since 1987, the number of gaging stations in operation has been relatively stable at about 105 to 110.

EXPLANATION OF STATION SUMMARIES

Station summaries are presented so that each station description and tables of streamflow statistics and 

probabilities of occurrence are presented in the same order and format for each gaging station, including 

the same relative placement of the pages. Because the information and statistics in the tables were created 

by "data retrievals" or statistical program results, significant figures were not rounded to U.S. Geological 

Survey standards. The order of presentation is as follows:

1. station description,

2. graph of the annual mean discharge for the period of record,

3. table of statistics of monthly and annual mean discharges,
Table 1 . List of streamflow-gaging stations in the lower Red River of the North Basin for which streamflow statistics are 

published in this report

[ND, North Dakota; MN. Minnesota; MB, Manitoba]

Station 

number Station name

05064900 Beaver Creek near Finley, ND

05065500 Goose River near Portland, ND

05066500 Goose River at Hillsboro, ND

05067500 Marsh River near Shelly, MN

05068000 Sand Hill River at Beltrami, MN

05068500 Sand Hill Ditch at Beltrami, MN

05069000 Sand Hill River at Climax, MN

05074500 Red Lake River near Red Lake, MN

05075000 Red Lake River at Highlanding near Goodridge, MN

05076000 Thief River near Thief River Falls, MN

05076500 Thief River at Thief River Falls, MN

05077500 Clearwater River near Leonard, MN

05077700 Ruffy Brook near Gonvick, MN

05078000 Clearwater River at Plummer, MN

05078230 Lost River at Oklee, MN

05078500 Clearwater River at Red Lake Falls, MN

05079000 Red Lake River at Crookston, MN

05082500 Red River of the North at Grand Forks, ND

05083000 Turtle River at Manvel, ND

05083500 Red River of the North at Oslo, MN

05083600 Middle Branch Forest River near Whitman, ND

05084000 Forest River near Fordville, ND

05085000 Forest River at Minto, ND

05087500 Middle River at Argyle, MN

05088000 South Branch Park River near Park River, ND

05089000 South Branch Park River below Homme Dam, ND

05089100 Middle Branch Park River near Union, ND

05089500 Cart Creek at Mountain, ND

05090000 Park River at Grafton, ND

05092000 Red River of the North at Drayton, ND

05092200 Pembina County Drain 20 near Glasston, ND

05093000 South Branch Two Rivers at Pelon, MN

05094000 South Branch Two Rivers at Lake Bronson, MN

05095500 Two Rivers below Hallock, MN

05096000 North Branch Two Rivers near Lancaster, MN

05096500 State Ditch 85 near Lancaster, MN

05098700 Hidden Island Coulee near Hansboro, ND

05098800 Cypress Creek near Sarles, ND

05099100 Snowflake Creek near Snowflake, MB

05099150 Mowbray Creek near Mowbray, MB

05099300 Pembina River near Windygates, MB

05099400 Little South Pembina River near Walhalla, ND

05099600 Pembina River at Walhalla, ND

05100000 Pembina River at Neche, ND

05100500 Herzog Creek near Concrete, ND

05101000 Tongue River at Akra, ND

05101500 Tongue River at Cavalier, ND

05102500 Red River of the North at Emerson, MB
100

MANITOBA

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148°

EXPLANATION

A Active streamflow-gaging stationA Discontinued streamflow-gaging station

082500 Abbreviated station number, downstream 

order

i Drainage basin boundary

0 10 20 30 40 MILES

SOUTH DAKOTA

Figure 1. Location of streamflow-gaging stations in the lower Red River of the North Basin for which streamflow statistics are published in this report.
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4. graph of the annual flow duration,

5. table of monthly and annual flow duration,

6. table of probability of occurrence of annual high discharges,

7. table of probability of occurrence of annual low discharges,

8. table of probability of occurrence of seasonal low discharges,

9. table of annual peak discharge and corresponding gage height for the period of record, and

10. table of monthly and annual mean discharges for the period of record.

Where both pre-regulation and post-regulation statistics are presented for a gaging station, the station 

description, graph of annual mean discharges, table of annual peak discharges and corresponding gage 

heights, and table of monthly and annual mean discharges are presented with the pre- and post-regulation 

data. The respective tables for the pre- and post-regulation data are presented in the same relative page 

format as non-regulated streams.

Station Description

The location, drainage area, period of record, and other information about each streamflow-gaging 

station are included in the station description. This information is compiled from records maintained by 

the U.S. Geological Survey and generally is presented in the same format as published in the annual state 

water report. The following comments clarify information presented under the various headings of the 

station description.

LOCATION.~Information on gaging station location is obtained from the most accurate maps 

available and is furnished with respect to cultural and physical features in the vicinity of the gaging station 

and the community or landmark included in the gaging station name. In the case of discontinued gaging 

stations, the location is furnished using features in the vicinity at the time the gaging station was in 

operation. In many instances, the identifying features have been altered since the gaging station was 

discontinued.

DRAINAGE ARE A.--Drainage area is measured using U.S. Geological Survey 7.5-minute 

topographic quadrangle maps. However, 7.5-minute topographic maps for drainage area computations 

were not available when some gaging stations were installed; therefore, the accuracy of drainage areas also 

varies. Drainage areas of discontinued gaging stations are those determined while the gaging station was 

in operation.

PERIOD OF RECORD.~The period of record is the period for which there are published records for 

the gaging station or for an equivalent gaging station. An equivalent gaging station is a gaging station that 

was in operation in a different location prior to the subject gaging station, and whose location is such that 

records from it can reasonably be considered equivalent with records from the subject gaging station. This 

situation arises when a gaging station is relocated upstream or downstream and given a new gaging station 

number and name, but the changes in drainage area and other basin characteristics are not significantly 

different. Period of record to current year indicates that the station was in operation as of September 30, 

1994.

GAGE.~The type of gage or recorder that is or was used to collect data, the datum of the gage referred 

to sea level, and a condensed history of the types, locations, and datums of previous gages are given under 

this heading.
EXTREMES FOR PERIOD OF RECORD.-Extremes may include maximum and minimum 

discharges and maximum and minimum gage heights. Unless otherwise qualified, the maximum discharge 

is the instantaneous maximum discharge corresponding to the highest gage height that occurred. If the 

maximum gage height did not occur on the same day as the maximum discharge, it is listed separately. 

Similarly, the minimum discharge is the instantaneous minimum discharge corresponding to the lowest 

gage height that occurred, unless qualified and listed otherwise.

EXTREMES OUTSIDE PERIOD OF RECORD.-Included is any information available concerning 

major floods or unusually low flows that occurred outside the stated period of record. The information 

may not have been obtained by the U.S. Geological Survey.

Statistics of Monthly and Annual Mean Discharges

Statistics of monthly and annual mean discharges presented for each gaging station include (1) the 

maximum, minimum, and mean monthly discharges and (2) the maximum, minimum, and mean annual 

discharges. The water years (October 1 through September 30) in which the maximum and minimum 

discharges occurred are listed with the respective values, and the standard deviation and coefficient of 

variation of the monthly and annual mean discharges are listed with the respective values. Also, the 

percentage of the annual discharge that is comprised by each monthly mean discharge is listed in the table.

Each of the statistics is explained in the following paragraphs. As an aid to the readers' understanding 

of how the monthly mean and annual mean discharges are determined, data for the gaging station Red 

Lake River at Crookston, MN (05079000, p. 143-153) are used as an example. The monthly mean value is 

the average of the daily values for the month. The annual mean value is the average of the daily values for 

the year. Months or years for which all daily values are not available are not included in the compilation of 

statistics.

The maximum monthly mean discharge is the maximum value of all the monthly mean values. The 

maximum mean value for October is 2,840 cubic feet per second (ft3/s), which occurred during water year 

1972. Similarly, the minimum monthly mean discharge is the minimum value of all the monthly mean 

values. The minimum mean value for October is 8.02 ft3/s, which occurred during water year 1937. The 

maximum and minimum monthly mean values can be found in the statistics of monthly and annual mean 

discharges table or by searching the monthly and annual mean discharges table.

The mean monthly discharge is the mean of all the monthly mean discharges for a given month, and 

the standard deviation is a measure of the variability of the values. The mean monthly discharge for 

October is 805 ft3/s, and the standard deviation is 689 ft/s. The monthly mean discharge for October 

(mean of the mean monthly values) is the same as the mean of all October daily values for the period of 

record used. However, the standard deviation is smaller than the standard deviation obtained using all 

daily values. The standard deviation is smaller because the monthly values have less variability than the 

daily values.

The coefficient of variation is the ratio of the standard deviation to the mean. The coefficient of 

variation is dimensionless. Because monthly mean discharges are generally much greater in spring than in 

winter, the standard deviations also are generally much greater in spring than in winter. However, dividing 

the standard deviation by the mean monthly discharge tends to equalize the measures for all months so a 

more meaningful comparison among months can be made.
The percentage of the annual discharge is the percent of the annual discharge that occurred during 

each month. It is calculated by dividing the mean discharge for the month by the total of the 12 monthly 

mean discharges and multiplying by 100. Because of rounding of the monthly percentage, the sum of the 

12 percentages may not equal 100 percent.

The maximum, minimum, and mean annual discharges are selected or computed from the annual 

mean discharges for the period of record. The water years of occurrence of the maximum and minimum 

values are listed with the respective values, and the standard deviation of the mean of the annual mean 

values is listed with the mean value. The minimum annual mean discharge of 132 ft /s occurred in 1935, 

and the maximum annual mean discharge of 3,130 ft3/s occurred in 1950. The mean annual discharge for 

the period of record is 1,110 ft3/s.

Monthly and Annual Flow Duration

The monthly and annual flow duration table is a magnitude and frequency analysis of daily discharge 

values. It is computed by tabulating the number of daily discharge values that fall within preselected class 

limits, computing the percentage of values within each class, and interpolating discharge values for the 

percentages shown in the table. Monthly values are calculated from daily values in all complete months in 

the record, and annual figures are calculated for all complete water years. For example, if the 90-percent 

flow duration value for October is 101 ft /s, then 90 percent of all October daily discharge values for the 

period of record were equal to or greater than 101 ft3/s.

Probability of Occurrence of High or Low Discharges

The probabilities of occurrence of annual high discharges, annual low discharges, and seasonal low 

discharges are presented in three tables for each gaging station. Probability of occurrence is an estimate of 

the likelihood that a particular discharge in a stream will be equaled or exceeded in 1 year or, in the case of 

low flows, the likelihood that the discharge will not be equaled or exceeded during the year. The 

probability of occurrence of a high flow is called the exceedance probability, and the probability of 

occurrence of low flow is called the nonexceedance probability. For example, if the maximum 

instantaneous discharge for the 0.20 exceedance probability is listed as 13,100 ft3/s, then a 20 percent 

chance exists that a discharge equal to or greater than 13,100 ft /s will occur once during the year.

Recurrence interval is another way of expressing annual probability and it is the reciprocal of 

probability of occurrence. The recurrence interval for an exceedance probability of 0.20 is 5 years 

(1 divided by 0.20). For a long discharge record the annual maximum discharge can be expected to equal 

or exceed 13,100 ft3/s on average once every 5 years.

The table of probability of occurrence of annual high discharges for each gaging station lists the 

maximum instantaneous discharge and the maximum mean discharge for 3, 7, 15, and 30 consecutive-day 

periods for selected exceedance probabilities and recurrence intervals. Values for the maximum 

instantaneous discharge are computed from the streamflow record according to the guidelines established 

by the Hydrology Subcommittee of the Interagency Advisory Committee on Water Data (1982). 

According to the guidelines, adjustments are made for length of record and regional skew.

Values for the maximum mean discharges for 3, 7, 15, and 30 consecutive-day periods are computed 

from the annual high mean values of the corresponding periods. The computations are based on the logPearson Type III distribution using values obtained for the water year.
The table of probability of occurrence of annual low discharges for each gaging station lists the 

minimum mean discharge for 1, 3, 7, 14, 30, 60, 90, 120, and 183 consecutive-day periods for selected 

nonexceedance probabilities and recurrence intervals. Values for the minimum mean discharges are 

computed from the annual low discharge values of the corresponding periods using the log-Pearson Type 

III distribution. If the log-Pearson Type III distribution curve fails to fit the data at the lower end, a 

graphical interpretation is made. Probabilities of annual low discharges are computed using values 

obtained for the climatic year (April 1 through March 31).

The table of probability of occurrence of seasonal low discharges for each gaging station lists the 

minimum mean discharge for 1,7, 14, and 30 consecutive-day periods for selected probabilities and 

recurrence intervals. These values are computed from the seasonal low mean values of the corresponding 

periods using the log-Pearson Type III distribution.

The annual low discharge and the seasonal low discharges that occur in any given year are sensitive to 

natural-channel processes, such as evapotranspiration and human-induced hydrologic modifications, such 

as the operation of many small water-storage reservoirs; the effects of surface-water withdrawal for 

agricultural, municipal, and industrial use; and the effects of return flow to the river. Thus, the statistics in 

tables are given for recurrence intervals that generally are within twice the period of record.

DATA CONSIDERATIONS

Period of Record

The reliability of statistical data is related to the length of record for a stream. The Hydrology 

Subcommittee of the Interagency Advisory committee on Water Data (1982) recommends that at least 

10 years of record be used for computing flood frequency estimates. Therefore, the length of record 

criterion for inclusion of a gaging station in this report is at least 10 years. Even with this criterion, the 

lengths and continuity of record for the gaging stations vary substantially. Subsequently, extreme high or 

low flows may be included in the streamflow record of one gaging station and not in another, resulting in 

inconsistencies in the streamflow statistics when comparing gaging station data. Also, longer record 

lengths for many of the gaging stations in this report may result in different streamflow statistics when 

comparing data in this report with data in previous publications.

Differences in statistical data for pre- and post-regulation periods may not be caused solely by 

regulation. Differences also can be attributed to the length of record and climatic variability as expressed 

by hydrologic variability. By comparing a statistic that easily can be affected by regulation, such as the 

7-day low flow, and a statistic that generally is unaffected by regulation, such as the mean annual 

discharge, a determination can be made about the effect of regulation. As an example, the annual 7-day 

low flow with a 10-year recurrence interval for the Red River of the North at Fargo (Wiche and WilliamsSether, 1997) is 0 ft3/s for the pre-regulation period (1901-41) and 17.9 ft3/s for the post-regulation period 

(1942-94). The effect of regulation on the mean annual discharge of the Red River of the North can be 

assumed to be negligible; however, the mean annual discharge is 403 ft3/s for the pre-regulation period and 

741 ft3/s for the post-regulation period. Although annual 7-day low flow for a 10-year recurrence interval 

is much greater for the regulation period, the mean annual discharge for the regulated period also is much 

greater, indicating that regulation may happen to correspond to a relatively wet period in the Red River of 

the North Basin and may not be the sole factor for differences in statistical data for pre- and post-regulation 

periods.
REFERENCES

Crosby, O.A, 1970, A proposed streamflow data program for North Dakota: U.S. Geological Survey Open-File 

Report, 68 p.

Haffield, N.D., 1981, Statistical summaries of streamflow and water-quality data for streams of western North 

Dakota, 1977-80: U.S. Geological Survey Open-File Report 81-1066, 78 p.

Hydrology Subcommittee of the Interagency Advisory Committee on Water Data, 1982, Guidelines for determining 

flood flow frequency: Hydrology Subcommittee Bulletin 17B, 28 p., 14 appendices.

Wahl, K.L., Thomas, WO., Jr., and Hirsch, R.M., 1995, Stream-gaging program of the U.S. Geological Survey: U.S. 

Geological Survey Circular 1123, 22 p.

Wiche, G.J. and Williams-Sether T., 1997, Streamflow Characteristics of Streams in the Upper Red River of the 

North Basin, North Dakota, Minnesota, and South Dakota: U.S. Geological Survey Open-File Report 97-416, 

374 p.

10
STREAMFLOW 

STATISTICS

11
05064900 BEAVER CREEK NEAR FINLEY, ND

LOCATION.--Lat 47°35'40", long 97°42'18", in NEV4 sec.31, T.148 N., R.55 W., Steele County, 

Hydrologic Unit 09020109, on right bank 500 ft upstream from bridge on county highway, and 7 mi 

northeast of Finley.

DRAINAGE AREA.--160 mi2 , approximately. 

PERIOD OF RECORD.-October 1964 to current year.

GAGE.-Water-stage recorder and concrete broad-crested weir. Datum of gage is 1,170.08 ft above sea 

level.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 1,900 ft3/s, Apr. 19, 1979, gage height, 

8.35 ft; maximum gage height, 9.70 ft, Mar. 14, 1966; no flow at times.

100

Annual mean discharge

eo

40

Li

O 

cc 

<

W 20 

Q

i i i i i i i i i i i r i i i i r

i i i i i i i i i i i i i i i i

tn o tn S

T- TO O)

o tn o 

ob o> o>

tn o tn

12
05064900 BEAVER CREEK NEAR FINLEY, ND-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence]

Month

October

November

December

January

February

March

April

May

June

July

August

September

Annual

inn i f \j\j .

70 '-

50 r

40 -

30 -

i ^

o

h3 10 r

W 7^

CC c L Uj 5 .

Q. 4 ~

1- 3 r

[{} 2r

u_ :

 1 r

CDS 0.7 r

0 0.5 EZ 0.4 -

~ 0.3 -

HI

O 0.2 r

CC :

X 0.1 r

% 0.07 r

5 8$:

0.03 -

0.02 r

n m 

Maximum

Discharge Wat«7ear

(ft3/s) Of 

v ' occurrence

9.30 1983

5.04 1994

2.52 1994

0.796 1994

2.61 1984

64.6 1966

244 1979

47.0 1979

29.4 1994

104 1993

43.4 1994

21.2 1993

24.3 1979

i i , i i | i i i , , 1 1 1 . |

_

i i i . ,. i i . ,,,,.... i

Minimum

Discharge Watervear Discharge

(ft3/s) OT (ft3/s) 1 ' occurrence l '

0 m 1.14

0 m 0.520

0 m 0.140

0 m 0.030

0 m 0.240

0 m 23.2

0.192 1981 50.4

0.042 1977 8.95

0.001 1988 5.00

0 m 8.67

0 m 3.96

0 m 2.41

0.121 1977 8.73

Annual flow duration

i i i i | i i 1 1 1 , 1 1 1 1 1 , i , 1 1 , , , | ... i

9

9

M<

Standard 

deviation 

(ft3/s)

2.15

1.02

0.46

0.15

0.56

21.4

59.2

12.2

7.01

21.6

9.97

5.49

6.78

i i

jan

Coefficient of 

variation

1.89

1.95

3.21

5.20

2.31

0.92

1.17

1.36

1.40

2.49

2.52

2.28

0.78

i . i i i

i i i i i

Percentage 

of annual 

discharge

1.09

0.50

0.14

0.03

0.23

22.16

48.18

8.55

4.78

8.28

3.78

2.30

100

j

_

-

-

-

-j

_:

-j

~

-

-

;

_~

-^

.:

-;

-

-

;

-_

-^

 i

-

-

i

10 20 30 40 50 60 70 80

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

90 95 98

13
05064900 BEAVER CREEK NEAR FINLEY, ND-Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.05

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.40

0.90

March

0

0

0

0

0

0

0

0

0.05

0.34

1.20

3.70

6.33

10.0

17.7

35.0

55.7

83.4

125

April

0.09

0.36

0.52

1.10

1.50

2.20

3.77

6.51

8.21

11.4

16.0

21.0

27.5

35.5

45.3

57.1

84.1

129

226

May

0

0.10

0.25

0.46

0.61

0.82

1.10

1.50

2.00

2.00

2.70

3.85

4.42

5.34

7.18

10.1

16.5

26.7

44.4

June

0

0

0

0.10

0.19

0.25

0.45

0.60

0.81

1.10

1.10

1.50

1.90

2.60

3.53

4.27

6.92

13.4

25.0

July

0

0

0

0

0

0

0

0.09

0.18

0.34

0.47

0.90

1.20

1.70

3.12

4.27

6.57

11.4

34.9

Aug.

0

0

0

0

0

0

0

0

0

0

0

0.03

0.10

0.19

0.33

0.60

1.90

10.1

23.5

Sept.

0

0

0

0

0

0

0

0

0

0

0.02

0.14

0.24

0.41

0.71

1.20

2.70

6.40

15.0

Oct.

0

0

0

0

0

0

0

0

0

0

0.07

0.18

0.29

0.47

0.76

1.20

2.50

3.20

5.54
05064900 BEAVER CREEK NEAR FIN LEY, ND-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

_ . Recurrence Exceedance . . . 

. ..... interval probab,l,ty (yearg)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 3-day period 7-day period 15-day period 30-day period 

(ft3/s)

3.6 1.33

16.0 7.72

32.9 17.5

73.4 42.2

281 167

843 457

1,370 676

2,150 941

2,790 1,120

3,440 1,270

4,110 1,400

5,000 ng

0.770

5.11

12.2

30.6

124

328

469

625

719

795

856

ng

0.534 0.357

3.62 2.42

8.63 5.75

21.7 14.3

85.7 55.7

216 137

301 188

389 240

439 269

478 291

508 307

ng ng

Probability of occurrence of annual low discharges

[ng, statistic not given]

Minimum mean discharge (ftVs)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 ng

0.10 10 ng

0.20 5 ng

0.50 2 ng

3 7 14 30

ng ng ng ng

ng ng ng ng

ng ng ng ng

ng ng ng ng

60

ng

ng

ng

ng

90 120 183

000

000

000

0 0.009 0.043

15
05064900 BEAVER CREEK NEAR FINLEY, ND-Continued

Probability of occurrence of seasonal low discharges

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurrence

exceedance interval

probability (years)

14 30 14 30

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

0

0

0

0

June- July- August

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

March-April-May

0

0

0

0

0

0

0

0

0

0

0.085

1.02

September-October-November

0

0

0

0

0

0

0

0

0

0

0

0

16
05064900 BEAVER CREEK NEAR FINLEY, ND-Continued

Annual peak discharge and corresponding gage height

[ , no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/*)

Annual peak discharge, by year, and corresponding gage height

1965 

1966 

1967 

1968

1969 

1970

1971 

1972 

1973

1974 

1975

1976 

1977

1978 

1979

April 1 1 

March 20 

April 20 

June 7

April 9 

June 16

Aprils 

May 26 

March 14

April 11 

June 22

March 24 

March 3 1

March 28 

April 19

6.88

7.33 

5.52 

3.55

6..55 

6.49

4.77 

5.65 

4.35

5.07

5.26 

3.00

7.28 

8.35

1,250 

400 

652 

47.0

1,320 

1,270

392 

736 

170

550

472

290 

29.0

950 

1,900

1980 

1981 

1982 

1983

1984 

1985

1986 

1987 

1988

1989 

1990

1991 

1992

1993 

1994

March 3 1 

July 17 

March 30 

June 21

March 25 

March 1 1

May 12 

July 22 

March 24

AprilS 

June 30

May 23 

March 5

July 23 

April 24

3.72 

2.89 

5.74 

4.53

4.49

4.60 

6.04 

4.07

4.55 

2.67

2.65

6.42

100 

10.0 

700 

259

150

253

282 

688 

130

230 

9.70

7.80 

95.0

700 

170

Annual peak discharge, from highest to lowest, and corresponding gage height

1979 

1969 

1970

1965 

1978

1972 

1982

1993 

1987 

1967 

1974 

1975

1966 

1971 

1976

April 19 

April 9 

June 16

April 1 1 

March 28

May 26 

March 30

July 23 

July 22 

April 20 

April 1 1 

June 22

March 20 

Aprils 

March 24

8.35 

6.55 

6.49

6.88 

7.28

5.65

5.74

6.42 

6.04

5.52

5.07

7.33 

4.77 

5.26

1,900 

1,320 

1,270

1,250 

950

736 

700

700 

688 

652 

550

472

400 

392 

290

1986 

1983 

1985

1989 

1973

1994 

1984

1988 

1980 

1992 

1968 

1977

1981 

1990 

1991

May 12 

June 21 

March 1 1

AprilS 

March 14

March 24 

March 25

March 24 

March 3 1 

March 5 

June 7 

March 3 1

July 17 

June 30 

May 23

4.60 

4.53 

4.49

4.55 

4.35

~

4.07 

3.72

3.55 

3.00

2.89 

2.67 

2.65

282 

259 

253

230 

170

170 

150

130 

100 

95.0 

47.0 

29.0

10.0 

9.70 

7.80

17
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05065500 GOOSE RIVER NEAR PORTLAND, ND

LOCATION.--Lat 47°32'20", long 97°27'20", in SE1 /4NE1 /4 sec. 19, T.147 N., R.53 W., Traill County, 

Hydrologic Unit 09020101, on left bank 75 ft upstream from bridge on State Highway 18, 1.2 mi 

upstream from unnamed tributary, 4 mi downstream from Beaver Creek, and 5 mi northwest of 

Portland.

DRAINAGE AREA.-517 mi2 of which about 110 mi2 is probably noncontributing.

PERIOD OF RECORD.-October 1939 to September 1975, October 1980 to 1986. Seasonal records only 

since 1983.

GAGE. Water-stage recorder. Datum of gage is 967.48 ft above National Geodetic Vertical Datum of 

1929. Prior to Oct. 1, 1956, nonrecording gage at site 2 mi upstream at datum 11.28 ft higher.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 8,530 ft3 /s, May 9, 1950, gage height, 

20.12 ft, on basis of contracted opening measurement, present site and datum; no flow at times most 

years.

EXTREMES OUTSIDE PERIOD OF RECORD.-Flood of Apr. 20-21, 1979, reached a stage of 20.96 ft, 

present datum, from floodmark; discharge not determined.

500

Q400

O 

UJ 

W

cc

UJ 

QL

tH300

UJ 

LJ_

O 

CO

O

Z 200

UJ 

O

CC

<

O

W 100

Q

Annual mean discharge

i i i

8 8 CO CO

omom omoin

19
05065500 GOOSE RIVER NEAR PORTLAND, ND-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence]

Maximum

Mon,h

October

November

December

January

February

March

April

May

June

July

August

September

Annual

Discharge 

(ft3/s)

10.2

6.92

2.96

1.77

3.75

408

1,080

1,390

103

52.5

45.5

29.9

214

Water year 

of 

occurrence

1965

1972

1970

1970

1954

1966

1950

1950

1964

1952

1966

1957

1950

Minimum

Discharge 

(ft3/s)

0

0

0

0

0

0

0

0

0

0

0

0

0

occurrence

m

m

m

m

m

m

1981

1981

m

m

m

m

1981

Discharge

1.15

0.830

0.380

0.190

0.230

47.2

204

64.0

22.4

8.98

3.07

2.09

29.5

Mean

Standard 

deviation 

(ft3/s)

2.59

1.61

0.78

0.41

0.67

79.64

254

215

26.0

12.6

9.10

5.77

38.8

Coefficient of 

variation

2.25

1.95

2.04

2.22

2.93

1.69

1.25

3.36

1.16

1.40

2.97

2.75

1.31

Percentage 

of annual 

discharge

0.33

0.23

0.11

0.05

0.06

13.3

57.5

18.1

6.32

2.54

0.87

0.59

100

Annual flow duration

1UU

70

30

Z 20

O

Uj 10

2 7

H I

tn 3

UJ 2

LL

lo.;

z 8:!

~ 0.3 LU 

O 0.2 

CC

X 0.1 

GO 0.07

5 8:8!

0.03

0.02 

n m

. i i T . i i i | i i i i i , i i . | . . i i | i i . i | . i i i | i . i i | i i i i | i i

-

: 

j-

 _ 

:

r *

~ 

: 

~ 

:_ 

r

-

r . , i , , , , i i , , , , , , , , i , , , , i , i , , i , , , , i i i , , i , , , , i , ,

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-

-

-j

-.

i

-

-.

 i

-_

I

_;

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,.!,,,,! , . , 1 ,

10 20 30 40 50 60 70 80 90 

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

95 98

20
05065500 GOOSE RIVER NEAR PORTLAND, ND-Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0.03

0.10

0.22

0.49

0.57

1.10

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.08

0.34

0.44

0.70

March

0

0

0

0

0

0

0

0

0

0.02

0.17

0.48

0.98

3.20

13.1

27.3

57.4

114

284

April

0.06

0.99

2.00

4.73

7.56

12.1

15.6

21.2

29.7

41.1

55.1

73.6

98.8

127

162

216

308

522

1,020

May

0.10

0.27

0.52

1.00

1.40

1.90

3.28

4.05

5.22

7.28

10.1

15.4

21.2

28.3

36.3

50.5

67.1

110

195

June

0

0

0

0.13

0.49

1.30

2.50

3.52

5.07

7.13

9.93

13.0

15.8

19.6

24.0

29.8

40.3

59.7

99.1

July

0

0

0

0

0.02

0.09

0.23

0.59

1.10

1.50

2.10

4.06

5.60

7.44

8.82

12.1

16.2

23.9

39.3

Aug.

0

0

0

0

0

0

0

0

0

0

0.08

0.08

0.35

0.48

1.20

2.10

3.67

5.16

14.0

Sept.

0

0

0

0

0

0

0

0

0

0

0

0

0

0.07

0.22

0.68

1.20

2.80

9.72

Oct.

0

0

0

0

0

0

0

0

0

0

0

0

0

0.09

0.19

0.52

1.40

4.13

7.13
05065500 GOOSE RIVER NEAR PORTLAND, ND--Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

_ . Recurrence Exceedance , . . 

. ..... interval probab,lity (yearg)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum mean discharge 

(ft3/s)

Maximum 

instantaneous 3-day period 7-day period 15-day period 30-day period 

(ft3/s)

ng 0 0 0

86.1 26.4 19.2 13.9

139 62.5 45.9 32.2

242 142 105 71.2

667 512 383 246

1,710 1,500 1,120 689

2,720 2,460 1,840 1,110

4,360 4,010 2,990 1,770

5,860 5,390 4,000 2,340

7,580 6,940 5,140 2,970

9,530 8630 6,380 3,660

12,500 ng ng ng

0

9.94

21.3

44.8

149

424

705

1,170

1,610

2,130

2,710

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (ffVs)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 0

0.10 10 0

0.20 5 0

0.50 2 0

3 7 14 30 60 90

000000

000000

000000

000000

120 183

0 0

0 0

0 0

0 0.032

22
05065500 GOOSE RIVER NEAR PORTLAND, ND-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December-Januaiy-Februaiy

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.090

0

0

0

0

7 14 30

March-April-May

0

0

0

0

0

0

0

0

0

0

0.025

1.48

September-October-November

0

0

0

0

0

0

0

0

0

0

0

0

23
05065500 GOOSE RIVER NEAR PORTLAND, ND-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1940

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

April 16

April 9

Aprils

March 26

April 10

March 15

March 20

March 28

April 21

April 7

May 9

March 30

April 3

July 4

June 15

March 3 1

April 16

September 5

July 27

April 3

AprilS

March 10

AprilS

7.88

12.59

11.51

14.90

5.10

6.70

9.14

6.95

21.30

13.60

20.12

12.50

11.45

7.77

4.28

10.80

11.07

5.95

5.47

4.94

11.45

4.13

15.39

487

1,130

850

1,200

169

340

530

260

4,700

1,200

8,530

650

600

367

58

600

550

134

95.0

72.0

924

71.0

1,610

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1981

1982

1983

1984

1985

1986

1987

1988

AprilS

June 22

April 13

March 21

April 23

June 10

April 13

April 27

April 9

April 17

March 17

April 14

April 19

April 1

-

April 1

March 16

March 27

March 17

March 25

AprilS

March 29

5.83

7.96

18.22

14.19

16.05

8.22

18.17

14.62

12.63

15.27

7.71

16.40

14.92

10.15

~

12.32

9.97

13.09

7.95

10.71

17.58

11.20

150

381

3,740

1,190

2,080

448

3,660

1,670

1,150

1,720

247

2,200

1,340

680

0

810

450

1,170

270

818

2,500

500

Annual peak discharge, from highest to lowest, and corresponding gage height

1950

1948

1965

1969

1987

1974

1967

1972

1970

1962

1975

1943

1949

1966

1984

1971

1941

1960

1942

1986

May 9

April 21

April 13

April 13

AprilS

April 14

April 23

April 17

April 27

AprilS

April 19

March 26

April 7

March 2 1

March 27

April 9

April 9

AprilS

AprilS

March 25

20.12

21.30

18.22

18.17

17.58

16.40

16.05

15.27

14.62

15.93

14.92

14.90

13.60

14.19

13.09

12.63

12.59

11.45

11.51

10.71

8,530

4,700

3,740

3,660

2,500

2,200

2,080

1,720

1,670

,610

,340

,200

,200

,190

,170

,150

,130

924

850

818

1982

1976

1951

1952

1955

1956

1946

1988

1940

1983

1968

1964

1953

1945

1985

1947

1973

1944

1963

1957

April 1

April 1

March 30

April 3

March 3 1

April 16

March 20

March 29

April 16

March 16

June 10

June 22

July 4

March 15

March 17

March 28

March 17

April 10

AprilS

September 5

12.32

10.15

12.50

11.45

10.80

11.07

9.14

11.20

7.88

9.97

8.22

7.96

7.77

6.70

7.95

6.95

7.71

5.10

5.83

5.95

810

680

650

600

600

550

530

500

487

450

448

381

367

340

270

260

247

169

150

134

24
05065500 GOOSE RIVER NEAR PORTLAND, ND-Continued

Annual peak discharge and corresponding gage height Continued

[--, no data]

Water Gage Peak Water Gage Peak Date height discharge Date height discharge

year_____________(feet) (fr3/s)__________^_____________(feet) (ffrs)

Annual peak discharge, from highest to lowest, and corresponding gage height Continued

1958 July 27 5.47 95.0 1954 June 15 4.28 58

1959 AprilS 4.94 72.0 1981 -- -- 0

1961 March 10 4.13 71.0

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05065500 GOOSE RIVER NEAR PORTLAND, ND-Continued

Monthly and annual mean discharges, in cubic feet per second Continued

[Data were not rounded in accordance with U.S. Geological Survey publication standards; --, no data]

Year

1975

1981

1982

1983

1984

1985

1986

Oct.

2.98

0

0

-

_

Nov.

1.75

0

0

-

_

Dec.

0.526

0

0

-

_

Jan.

0.457

0

0

~

Feb.

0.024

0

0

~

-

_

March

2.74

0

33.3

147.2

186.7

78.9

180.6

April

360.4

0

177.7

113.0

149.2

19.2

130.3

May

152.0

0

19.7

34.5

35.9

1.99

115.7

June

58.3

0

5.27

21.4

17.6

0.022

8.41

July

15.6

0

1.89

20.6

7.96

0

24.5
05066500 GOOSE RIVER AT HILLSBORO, ND

LOCATION.--Lat 47°24'34", long 97°03'39", NWV4 sec.5, T.145 N., R.50 W., Traill County, 

Hydrologic Unit 09020109, on right bank 600 ft upstream from Foogman Dam in Hillsboro and 

27.5 mi upstream from mouth.

DRAINAGE AREA.--1,203 mi2 of which about 110 mi2 is probably noncontributing.

PERIOD OF RECORD.-March 1931 to current year. No winter records during 1932-34. Monthly 

discharge only for some periods, published in WSP 1308.

GAGE.-Water-stage recorder and masonry dam. Datum of gage is 879.52 ft above sea level. Sept. 26, 

1941, to Oct. 27, 1965, at site 600 ft downstream at same datum. See WSP 1728 or 1913 for history of 

changes prior to Sept. 26, 1941.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 14,800 ft3/s, Apr. 21, 1979, gage 

height, 16.76 ft; no flow at times.

Annual mean discharge

ouu 

Q

O 400

O 

LLI 

CO

CC 

LU 

Q.

UJ 300

LU 

U_

O

CO

O

Z 200

III 

O 

CC

I 

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Q

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i

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DISCHARGE, IN CUBIC FEET PER SECOND 

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i IO Ol-'IO Ol-»IO OlOO OOO OC

1 1 1 1 1 1 III! 1 1 . 1 1 1 III) 1 1 1 1 1 1 III) 1 1 1 1 1 II. 1 1 1 1 , 1 1 1,1

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05066500 GOOSE RIVER AT HILLSBORO, ND-Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0.09

0.17

0.17

0.36

0.45

0.57

0.73

1.20

1.50

2.40

3.00

3.00

4.45

5.18

6.43

8.65

11.8

Feb.

0

0

0.10

0.18

0.27

0.40

0.48

0.59

0.88

1.60

1.90

2.30

3.50

4.30

4.99

5.59

6.16

7.78

14.1

March

0

0.10

0.35

0.49

0.92

1.30

1.70

2.40

4.08

4.96

6.45

9.70

16.5

31.0

60.1

101

180

359

876

April

5.75

9.72

16.1

22.6

28.3

33.8

43.7

55.5

68.5

88.2

115

153

207

275

371

525

774

1,170

2,040

May

2.30

4.67

6.36

7.76

10.7

13.8

16.1

19.8

23.8

28.1

33.8

40.5

50.5

64.0

84.6

109

146

212

363

June

0.97

1.70

3.61

4.76

6.30

8.69

11.3

14.1

16.5

19.9

24.9

32.6

43.0

54.0

66.3

82.9

106

146

232

July

0.06

0.27

0.56

0.81

1.70

2.73

3.72

5.22

6.71

9.00

11.7

14.0

16.7

22.5

31.1

42.2

57.9

83.5

139

Aug.

0

0

0.09

0.29

0.60

0.87

0.87

1.30

1.30

1.80

1.80

3.43

4.54

6.46

8.49

11.1

16.5

28.9

112

Sept.

0

0

0.08

0.16

0.23

0.33

0.47

0.66

0.94

1.30

1.30

1.90

1.90

3.36

4.65

8.53

14.8

31.2

61.7

Oct.

0

0

0.08

0.17

0.28

0.36

0.47

0.60

0.77

0.98

1.30

1.60

2.70

4.63

6.20

9.34

14.3

22.0

39.4
05066500 GOOSE RIVER AT HILLSBORO, ND-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

<ft3/s)

E eed Recurrence

probably" J£ J

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum

instantaneous 

(ft3/s)

21.3

78.2

148

307

1,070

3,110

5,080

8,160

10,800

13,700

16,800

21,100

3-day period 7-day period

17.1 15.6

69.7 59.6

137 115

292 238

1,020 819

2,840 2,280

4,440 3,600

6,720 5,540

8,510 7,120

10,300 8,750

12,100 10,400

ng ng

15-day period

11.8

43.3

81.8

167

561

1,540

2,430

3,750

4,820

5,940

7,090

ng

30-day period

9.25

30.5

55.0

108

347

960

1,540

2,440

3,220

4,070

4,980

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- vai 

ability (years)

0.05 20 0

0.10 10 0

0.20 5 0

0.50 2 0.071

3 7

0 0

0 0

0 0

0.083 0.142

14 30 60

000

000

0 0 0.088

0.207 0.310 0.620

90

0

0

0.185

0.961

120 183

0 0.014

0.016 0.176

0.281 0.453

1.43 1.97

31
05066500 GOOSE RIVER AT HILLSBORO, ND-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0.708

0

0

0

0.741

0

0

0.063

0.773

0

0

0.087

0.906

0

0

0,

1,

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0.028

0.614

0

0

0.061

0.837

0

0

0.130

1.16

0.007

0.098

0.319

2.02

0

0

0

0.

7 14 30

March-April-May

0

0

,126 0.201

,38 1.76

0

0.016

0.399

2.48

0.463

1.04

2.50

11.3

September-October-November

0

0

0

,194 0.350

0

0

0.021

0.440

0

0

0.119

0.746

32
05066500 GOOSE RIVER AT HILLSBORO, ND-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

<ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(fl3/s)

Annual peak discharge, by year, and corresponding gage height

! 1882

*1897

'1904

! 1916

1931

1932

1933

1934

1935

1936

1937

1938

1939

1940

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

April2

April2

April2

April2

April 7

March 3

March2

April 2

June 14

April 16

April 15

March 15

March 26

April 17

April 1 1

April 6

March 29

April 10

March 1 7

March 22

April 13

April 16

AprilS

April 19

March 3 1

April 4

July 6

June 15

April 3

April 19

September 7

July 3

AprilS

April 9

-

4.20

15.14

10.40

4.95

8.45

13.06

3.57

4.44

11.00

1.66

2.26

2.27

8.84

1.11

1.09

3.22

5.30

10.63

3.38

14.94

3.48

3.33

1.36

0.99

2.44

2.58

1.17

0.69

0.84

3.37

6,700

5,700

5,300

4,700

100

959

300

107

697

1,660

46.0

104

564

710

1,320

1,140

3,480

304

293

1,300

1,700

4,180

1,640

9,420

1,130

1,300

408

231

1,220

1,390

200

88.0

143

1,360

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

March 7

April 9

AprilS

June 14

April 13

March 23

April 24

June 12

April 12

April 9

April 10

April 15

March 15

April 15

April 19

March 29

April 1 1

April 1

April 21

March 3 1

June 25

April 3

March 17

March 29

March 16

March 24

March 26

March 28

AprilS

April 6

June 1

March 8

July 30

March 23

0.66

8.64

1.24

3.61

14.01

12.17

7.81

4.48

14.19

9.18

4.41

6.62

4.05

9.43

11.11

3.98

2.01

10.56

16.76

3.55

1.83

8.89

-

7.99

4.17

4.81

10.22

3.86

9.80

2.01

2.75

3.69

12.90

6.91

82.0

2,350

290

1,110

6,800

3,290

2,650

1,420

7,640

3,040

1,550

2,380

1,280

3,450

3,810

1,260

86.0

3,800

14,800

790

25.6

2,900

1,140

2,660

1,240

1,630

3,570

1,060

3,000

94.0

351

975

4,360

2,160

Annual peak discharge, from highest to lowest, and corresponding gage height

1979

1950

1969

1965

! 1882

! 1897

*1904

'1916

1993

April 21

April 19

April 12

April 13

April2

April2

April2

April2

July 30

16.76

14.94

14.19

14.01

«

-

12.90

14,800

9,420

7,640

6,800

6,700

5,700

5,300

4,700

4,360

1948

1975

1978

1987

1943

1974

1966

1970

1989

April 16

April 19

April 1

March 26

March 29

April 15

March 23

April 9

AprilS

10.63

11.11

10.56

10.22

8.84

9.43

12.17

9.18

9.80

4,180

3,810

3,800

3,570

3,480

3,450

3,290

3,040

3,000

33
05066500 GOOSE RIVER AT HILLSBORO, ND-Continued

Annual peak discharge and corresponding gage height Continued

[-, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(tf/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(tf/s)

Annual peak discharge, from highest to lowest, and corresponding gage height Continued

1982

1984

1967

1972

1962

1994

1947

1936

1949

1986

1971

1968

1956

1960

1941

1946

1952

1973

1976

1985

1955

1942

1983

1951

1964

April 3

March 29

April 24

April 15

April 9

March 23

April 13

April 16

AprilS

March 24

April 10

June 12

April 19

April 9

April 11

March 22

April 4

March 15

March 29

March 16

April 3

April 6

March 17

March 31

June 14

8.89

7.99

7.81

6.62

8.64

6.91

5.30

13.06

3.38

4.81

4.41

4.48

2.58

3.37

2.26

3.22

3.33

4.05

3.98

4.17

2.44

2.27

3.48

3.61

2,900

2,660

2,650

2,380

2,350

2,160

1,700

1,660

1,640

1,630

1,550

1,420

1,390

1,360

1,320

1,300

1,300

1,280

1,260

1,240

1,220

1,140

1,140

1,130

1,110

1988

1992

1932

1980

1940

1935

1939

1953

1991

1944

1933

1945

1963

1954

1957

1959

1934

1938

1931

1990

1958

1977

1961

1937

1981

March 28

March 8

March 3

March 3 1

April 17

June 14

March 26

July 6

June 1

April 10

March2

March 17

AprilS

June 1 5

September 7

AprilS

April 2

March 15

April 7

April 6

July 3

April 1 1

March 7

April 15

June 25

3.86

3.69

15.14

3.55

1.66

8.45

11.00

1.36

2.75

1.11

10.40

1.09

1.24

0.99

1.17

0.84

4.95

4.44

4.20

2.01

0.69

2.01

0.66

3.57

1.83

1,060

975

959

790

710

697

564

408

351

304

300

293

290

231

200

143

107

104

100

94.0

88.0

86.0

82.0

46.0

25.6

'Determined by U.S. Army Corps of Engineers; not used in statistics. 

Day of month unknown.

34
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so >n oo rt

so r~ os o so

so so o fN >n

OO fN "«t

oo 

oo so so fN >n

Os O OO PO Tj- oo O <*

^t ^P^I

>n os o so o 

oo O O <<t

 *f ^t OO P- fN

OO

SO PO SO fN fN 

 fN OS Tf 00

fN >n oo oo o

fN O r~

fN fN >n o

 fN 

PO -^t o rt oo r~ r~ >n

fN r~ o >n ^

fN fN

CN

OO OS O

r~ oo os >n os

o tt <N so >n

SO fN

OO OO OO OO OO

Os Os Os Os Os

oo fN so PO >n

 *f PO fN PO >n 

oo >n so r~

fN

^

Os o *n ^*

TJ-' O O O

>n

o >n oo fN "«t ^t r~ PO fN

r~ o o "t

SO

fN >n r~ >n >n os

SO fN Tt PO PO

Tf PO in

>n

oo >n >n oo so

 fN P«-> O OO 

tt O fN

os oo >n r~ >n

 "«t PO >n 

fN 

*n r^ *^ r^

>n PO oo os PO

SO <«t Tt 00 fN

fN pfN t^-

so r~ 

rn Os ^ >n

 fN Os SO fN

OS fN rt

PO OS PO

PO OO OS fN

>n so P«-> -^t " 

fN

OO OO ^

O r~ rj- >n oo

sO fN fN ^ O

 

O

>n so os

in oo fN PO O

 fN

fN

r~ o os 

 o >n "«t

>n >n >n fN o

 CN

>n oo

so PO so 

o ^ ^ r~ >n

 ^ ^ >n o o

so r~ oo os o

OO OO OO OO Os

Os Os Os Os Os

PO OO OS OO

^ Os ^ OO

 PO so ""oo

fN O 

o 06 o sd

 O fN 

fN PO

^*r^

>n oo o Os

o PO >n 

 fN

>n fN

OS O fN

oo oo Os sO

O fN fN

oo r~ rt o

r~ o oo fN

fN PO r-- so

O fN CN ^

OO Tt SO

^*

SO tt <* Os

PO Os PO O

fN CN fN >n

fN CN

oCs) OS OO Tt

t-- <tt r~ >n

r~ >n >n fN >n o

OS fN PO OS

fN O >n SO

>n <tt

r^ r~ >n 

fN PO Os fN

O O PO PO

fN

r- >n in 

O Os 

PO

sO

O 

o o >n fN

O CN SO SO

 PO

fN PO 

O Tt O

o o sd >n 

>n

 fN PO "«t

Os Os Os Os

Os Os Os Os

36
05067500 MARSH RIVER NEAR SHELLY, MN

LOCATION.«Lat 47°24'45", long 96°45'50", NE^NW1 ^ sec.3, T.145 N., R.48 W., Norman County, 

Hydrologic Unit 09020107, near center of span on downstream truss of bridge, 3.8 mi southeast of 

Shelly and 10 mi upstream from mouth.

DRAINAGE AREA.--151 mi2 .

PERIOD OF RECORD.-March 1944 to September 1983, April 1985 to current year. No winter records 

since 1989. Monthly discharge only for March 1944, published in WSP 1308. Operated as a highflow partial-record station October 1983 to March 1985.

GAGE. Water-stage recorder. Datum of gage is 841.14 ft above mean sea level (levels by U.S. Army 

Corps of Engineers). Prior to Oct. 1, 1965, nonrecording gage at datum 3.0 ft higher. Oct. 1,1965, to 

May 17, 1989, nonrecording gage at present site and datum.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 4,880 ft3/s, Apr. 19, 1979, gage height, 

23.36 ft, from floodmark; no flow at times.

Annual mean discharge

1,UUU

Q

O 800

O

ill

W

ccIII

Q.

ti eoo

LU

LL

O

CO3

0

Z 400

LU

O

cc<

X

0

W 200

Q

o.

1 1 1 1 1 1 1 1 1 1 1 1 1

-

"

-

-

1 1 1 1 1 1 1 1 1 1 1 1 1

Dinoinoinoinoinoinoin 

25S2222rrS'S'CC22

I I I I I I I I I

-

-

1

-

-

i,,i, , ..ii.ii, .11, il.iUi. ,

S

inoinoinoinoinc ifttotott:9SSS2?2?S

37
05067500 MARSH RIVER NEAR SHELLY, MN-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence]

Maximum

Month

October

November

December

January

February

March

April

May

June

July

August

September

Annual

Discharge 

(ft3/s)

130

102

77.1

64.5

62.1

437

1,270

2,620

1,030

821

363

144

543

Water year 

of 

occurrence

1952

1952

1951

1951

1951

1945

1947

1950

1950

1950

1949

1944

1950

Minimum

Discharge 

(ft3/s)

0

0

0

0

0

0

0.780

1.35

0

0

0

0

1.24

Water year 

of 

occurrence

m

m

m

m

m

m

1991

1958

1980

m

m

m

1977

Discharge 

(ft3/s)

12 A

10.7

5.60

3.79

3.29

69.5

289

126

81.6

73.6

20.8

13.2

63.3

Mean

Standard 

deviation 

(tf/s)

29.0

24.8

16.1

12.0

10.8

115

360

381

182

154

58.9

31.4

92.7

Coefficient of 

variation

2.34

2.32

2.87

3.16

3.29

1.66

1.25

3.03

2.23

2.10

2.84

2.38

1.46

Percentage 

of annual 

discharge

1.75

1.51

0.79

0.53

0.46

9.80

40.72

17.8

11.5

10.4

2.93

1.86

100

Annual flow duration

Q

8ni

CO

cc

HI 

0.

HI

HI

H

O

CQ

D

O

z

Hi" 

O

cc

I

0

CO

Q

l.UUU

500

200

100

50

20

10

5

2

1

0.5

0.2

0.1

0.05

0.02

n n-i

'-

-

r *

~

: 

r 

-

^

r * ,

7

"

r

; 

~

-

, I . . , , I , , , , , , , , , I , , , , I , . , , I , , , , I , , , , I , , , , I , , , , I , , , , I

i i | i i .

-j

-

-

~

-

-

-

-

"

-

-^

-

-

-

;

~

-

, , 1 ,

10 20 30 40 50 60 70 80

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

90 95 98

38
05067500 MARSH RIVER NEAR SHELLY, MN--Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0

0

0

0

0.02

0.09

0.15

0.19

0.25

0.33

0.73

14.1

28.8

Feb.

0

0

0

0

0

0

0

0

0

0

0

0.06

0.08

0.11

0.19

0.24

0.42

12.1

25.1

March

0

0

0

0

0

0

0.06

0.13

0.18

0.37

0.76

4.98

14.3

21.2

31.8

52.9

84.8

182

425

April

0.16

1.60

5.46

7.95

10.8

14.6

19.7

26.7

35.9

53.1

75.6

106

152

218

308

438

599

849

1,430

May

0.23

0.76

1.70

3.26

4.46

6.46

8.76

10.7

15.0

19.1

23.7

29.3

35.8

45.8

59.9

89.2

159

257

577

June

0

0.22

0.71

1.00

1.50

3.09

3.78

5.16

6.45

8.44

11.2

14.4

19.6

29.0

44.2

72.7

115

218

438

July

0

0

0

0.10

0.29

0.43

0.90

1.30

1.90

3.32

4.58

6.98

11.7

21.1

36.7

63.6

99.7

164

468

Aug.

0

0

0

0

0

0

0

0.02

0.08

0.30

0.60

0.85

1.20

2.40

4.27

10.1

22.9

56.6

107

Sept.

0

0

0

0

0

0

0

0

0

0.14

0.27

0.53

1.00

2.00

3.72

6.89

18.3

42.9

79.5

Oct.

0

0

0

0

0

0

0

0

0.02

0.21

0.38

0.70

1.30

2.30

4.53

9.94

21.4

43.6

84.6
05067500 MARSH RIVER NEAR SHELLY, MN--Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

_ . Recurrence

ExT?a"Ce interval probability (years)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 

(ft3/s)

37.8

112

191

346

946

2,180

3,180

4,530

5,560

6,600

7,620

8,940

3-day period 7-day period

20.9 17.5

72.5 56.6

132 101

258 193

791 587

1,980 1,500

2,960 2,310

4,320 3,480

5,360 4,430

6,390 5,420

7,410 6,430

ng ng

15-day period

13.4

40.8

70.9

133

397

1,030

1,600

2,460

3,190

3,970

4,790

ng

30-day period

8.17

25.8

45.6

87.2

267

706

1,110

1,720

2,240

2,790

3,380

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (n^/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- vai 

ability (years)

0.05 20 0

0.10 10 0

0.20 5 0

0.50 2 0

3 7

0 0

0 0

0 0

0 0

14 30 60

000

000

000

000

90

0

0

0

0.019

120 183

0 0

0 0

0 0

0.119 0.410

40
05067500 MARSH RIVER NEAR SHELLY, MN--Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0

0

0

0

0

0

0

0

0.039

0

0

0

0.448

0

0

0

0

7 14 30

March-April-May

0

0

0

0.013

0

0

0

0.140

0

0

0.182

3.98

September-October-November

0

0

0

0

0

0

0

0

0

0

0

0.008

41
05067500 MARSH RIVER NEAR SHELLY, MN-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(tf/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

July 1 1

March 1 8

March 23

April 14

April 13

June 3

May 11

Aprils

July 21

June 17

April 13

AprilS

April 13

June 23

July 10

March 3 1

April 7

March 9

June 11

Aprils

April 22

April 13

April 2

March 30

March 27

April 12

8.64

8.48

-

17.80

--

9.83

18.96

12.56

7.80

4.11

4.63

4.10

12.50

..

1.48

2.42

6.04

3.51

9.87

4.60

5.41

16.87

13.85

11.54

7.35

22.28

1,030

1,000

1,510

4,150

1,040

1,260

4,660

2,100

979

389

376

289

1,960

304

47

96

492

100

1,240

274

450

3,120

1,460

866

221

3,910

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

April 9

April 1

April 15

March 16

April 15

April 19

March 3 1

April 10

April 9

April 19

April 3

May 23

April 2

March 8

June 1 1

May 13

March 30

July 24

March 26

April 7

June 2

May 23

March 8

April 2

September 19

13.38

10.11

16.26

9.30

18.87

17.81

11.32

4.13

19.22

23.36

9.99

11.03

13.06

13.84

16.17

13.23

14.59

15.80

7.86

21.18

6.65

11.88

10.36

13.78

11.50

1,320

619

2,070

366

2,460

2,330

785

42

2,240

4,880

615

896

1,070

1,240

2,260

1,380

1,720

1,730

250

3,490

254

1,120

430

660

995

Annual peak discharge, from highest to lowest, and corresponding gage height

1979

1950

1969

1989

1965

1974

1975

1984

1978

1951

1972

1956

1987

1986

1946

1966

1985

April 19

May 11

April 12

April 7

April 13

April 15

April 19

June 1 1

April 9

Aprils

April 15

April 13

July 24

March 30

March 23

April 2

May 13

23.36

18.96

22.28

21.18

16.87

18.87

17.81

16.17

19.22

12.56

16.26

12.50

15.80

14.59

--

13.85

13.23

4,880

4,660

3,910

3,490

3,120

2,460

2,330

2,260

2,240

2,100

2,070

1,960

1,730

1,720

1,510

1,460

1,380

1970

1962

1983

1991

1982

1948

1944

1945

1994

1952

1981

1967

1976

1993

1971

1980

1960

April 9

June 11

March 8

May 23

April 2

April 13

July 1 1

March 18

September 19

July 21

May 23

March 30

March 3 1

April 2

April 1

April 3

April 7

13.38

9.87

13.84

11.88

13.06

--

8.64

8.48

11.50

7.80

11.03

11.54

11.32

13.78

10.11

9.99

6.04

1,320

1,240

,240

,120

,070

,040

,030

1,000

995

979

896

866

785

660

619

615

492

42
05067500 MARSH RIVER NEAR SHELLY, MN~Continued

Annual peak discharge and corresponding gage height Continued

[-, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ftVs)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ftVs)

Annual peak discharge, from highest to lowest, and corresponding gage height-Continued

1964

1992

1953

1954

1973

1957

1955

1963

April 22

March 8

June 17

April 13

March 16

June 23

Aprils

Aprilg

5.41

10.36

4.11

4.63

9.30

-

4.10

4.60

450

430

389

376

366

304

289

274

1990

1988

1968

1961

1959

1958

1977

June 2

March 26

March 27

March 9

March 31

July 10

April 10

6.65

7.86

7.35

3.51

2.42

1.48

4.13

254

250

221

100

96

47

42

43
05067500 MARSH RIVER NEAR SHELLY, MN-Continued

Monthly and annual mean discharges, in cubic feet per second 

[Data were not rounded in accordance with U.S. Geological Survey publication standards; , no data]

Year

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

Oct.

19.0

1.29

3.99

73.0

10.8

60.5

118.4

129.8

1.30

0.039

0

0

0

3.01

0

0

0

0.387

0.687

0

0.077

26.9

0.210

0

0

2.85

0.255

60.7

0.837

30.7

0.232

0.001

0

0.501

Nov.

11.8

0.820

1.68

55.8

19.8

74.3

85.7

101.8

0.877

0.227

0.053

0

0

7.03

0

0

0.117

0

1.60

0

0.123

5.43

0.030

0

0

2.29

0.563

60.2

0

5.38

6.35

0.866

0

0.180

Dec.

3.56

0.084

0.510

47.5

17.8

58.6

77. 1

13.1

0.681

0.742

0.106

0

0

0.945

0

0

0

0

0.713

0

0

2.72

0

0

0

0.768

0.023

4.57

0.278

1.41

0.593

0.008

0

0.020

Jan.

0.823

0

0

35.4

18.2

27.2

64.5

12.4

0.174

0.206

0

0

0

0

0

0

0

0

0.155

0

0

0.152

0

0

0

0.177

0

0.500

0.098

0.291

0.235

0

0

0.020

Feb.

0.350

0

0

25.1

14.9

23.8

62.1

10.8

0.132

0.050

0

0

0

0.339

0.007

0

0

0

0

0

0

0.068

0

0

0

0.168

0

0

0.078

0.174

0.121

0.004

0

0.020

March

0.142

437.2

363.5

22.0

28.9

18.1

51.9

107.0

14.8

52.1

6.64

0.484

0.010

40.5

1.33

18.3

23.7

35.6

0.258

20.6

0

0

389.4

60.1

19.9

0

1.47

46.7

317.9

84.1

0.165

0.128

68.1

2.79

15.5

April

83.3

629.4

280.2

1,273

656.3

216.7

1,537

1,190

390.7

46.5

135.4

69.5

317.2

35.5

4.13

19.9

108.9

12.9

97.9

33.7

103.4

573.3

291.5

143.6

11.8

608.5

350.4

100.7

321.3

10.3

775.2

552.8

71.0

10.2

676.3

May

43.5

184.5

60.7

424.3

265.8

198.3

2,617

714.6

125.3

38.5

60.2

9.39

37.5

10.3

1.35

6.75

10.6

25.0

198.5

11.6

23.2

25.9

50.4

30.1

5.42

31.4

58.0

5.39

52.9

4.21

149.9

86.0

2.44

1.36

9.95

June

114.2

22.4

13.0

607.5

102.2

411.5

1,030

301.7

90.3

100.7

22.4

14.9

23.7

41.6

3.00

4.96

12.6

3.03

347.1

32.7

18.6

29.7

9.99

9.92

15.7

24.7

137.6

2.76

4.71

0.741

20.7

17.0

4.06

0.565

0.998

July

327.2

7.24

12.8

129.9

76.0

585.2

821.0

102.5

201.9

119.6

2.21

17.6

1.02

17.2

15.5

1.27

8.27

0

264.3

0.44

3.26

21.0

2.38

1.17

1.06

42.8

2.33

0.45

5.26

0

1.25

230.1

0.01

0

0.01
05067500 MARSH RIVER NEAR SHELLY, MN--Continued

Monthly and annual mean discharges, in cubic feet per second Continued

[Data were not rounded in accordance with U.S. Geological Survey publication standards; , no data]

Year

1979

1980

1981

1982

1983

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

Oct.

0

0

0

12.7

12.0

..

4.61

0.319

0.745

0.098

4.43

0

0

3.35

Nov.

0

0.626

0

5.32

7.46

_

1.82

1.04

0.706

0.073

..

_.

._

Dec.

0

0.070

0

1.54

5.04

_

0.568

1.20

0.626

0

_

Jan.

0

0.015

0

0.097

1.33

__

0.445

0.338

0.197

0

Feb.

0

0

1.36

0.228

0.790

_

0.400

0.270

0.164

0

_

~

March

0

6.75

1.30

70.8

342.4

_

164.2

206.2

81.9

0.484

_

9.20

63.7

April

894.8

105.9

0.078

337.3

68.8

14.3

321.9

20.9

49.7

608.6

28.1

4.93

6.35

133.0

109.8

May

43.7

0.866

47.7

24.8

4.34

297.6

135.5

33.2

1.56

12.5

3.57

72.0

2.73

5.23

32.3

June

13.4

0

3.92

2.86

247. 1

11.2

19.3

5.92

0.100

4.60

30.7

27.4

17.4

4.69

92.9

July

53.4

0

1.18

1.18

55.7

9.13

18.4

259.6

0

0.076

5.15

2.84

28.7

100.2

124.6
05068000 SAND HILL RIVER AT BELTRAMI, MN

LOCATION.--Lat 47°32'50", long 96°32'00", inNE1 /4SW1 /4 sec. 16, T.147 N., R.46 W., on upstream 

side of bridge abutment on U.S. Highway 75 in Beltrami, 150 ft upstream from Great Northern 

Railway bridge and 0.25 mi north of post office.

DRAINAGE AREA.--324 mi2 includes that of Sand Hill ditch.

PERIOD OF RECORD.-April to November 1943, March 1944 to September 1958. Monthly discharge 

only for some periods, published in WSP 1308.

GAGE. Staff gage. Datum of gage is 896.80 ft above mean sea level, adjustment of 1912 (levels by U.S. 

Army Corps of Engineers). Prior to Aug. 28, 1944, reference point at same site and datum.

EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 291 ft3/s, Apr. 19, 1950, gage height, 

5.97 ft, from floodmark; no flow for many days most years.

100

O 80 

O 

UJ 

CO

tr

UJ

o_ 

tD eo

UJ

u. 

o 

m

o

2 40 

UJ

o 

cc

20

Annual mean discharge

I I I \ I I I I Till

I I I I I I I I I I I I I I I I

46
05068000 SAND HILL RIVER AT BELTRAMI, (UN-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence]

 « «,

Maximum Minimum

Water vear Water vear Discharge " «» y«» Discharge " «**«" Discharge

<(t3/8> n« f"3'8* occu^ne. «"*>

October 5.32 1947 0.071 1957 2.09

November 5.43 1950 0.500 1956 1.88

December 1.43 1945 0 m 0.650

January 0.877 1947 0 m 0.310

February 0.804 1947 0 m 0.220

March 12.9 1945 0 m 2.05

April 43.1 1947 0.103 1958 19.5

May 84.2 1950 0.113 1958 15.0

June 30.4 1947 0.820 1952 9.29

July 22.7 1949 0.229 1957 4.98

August 7.96 1944 0 m 2.27

September 3.38 1945 0 m 1.20

Annual 13.4 1950 0.368 1958 5.04

100 

70

50 

40

Z 30

o

O 20 ID

uj 10

I 4

En 3

O 2

Z

llf , 

O 1

< 0.7

0 0.5 

CO 0.4 

0 0.3

0.2

0.1,

Annual flow duration

 i | i i i i | 1 1 1 1 1 , , 1 1 1 i i i i | i i , 1 1 , . 1 1 1 1 1 1 1 1 1 i , i | i i i

i

! 

1 

[

- 9

1 9

[

i , , , , i , , , , , , 1 1 1 1 , , , , i , , , , i , i , , i , , , , i , , , , i , , ,

> 5 10 20 30 40 50 60 70

Mean

Standard Coeffi- Percentage 

deviation cient of of annual 

(ft3/s) variation discharge

1.67 0.80 3.52

1.26 0.67 3.17

0.47 0.73 1.09

0.34 1.12 0.52

0.31 1.44 0.36

3.64 1.78 3.45

12.9 0.66 32.8

20.1 1.34 25.3

7.66 0.82 15.6

5.63 1.13 8.38

2.00 0.88 3.82

0.98 0.81 2.03

3.41 0.68 100

i ' i ' i 

j

-

-

-.

-

-

-_

!,,.,! , . , 1 <

80 90 95 98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

47
05068000 SAND HILL RIVER AT BELTRAMI, MN--Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0

0

0.10

0.10

0.20

0.40

0.57

0.57

0.57

0.66

0.66

0.76

0.87

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0.19

0.40

0.49

0.60

0.60

0.69

0.79

March

0

0

0

0

0

0

0

0

0

0.17

0.36

0.43

0.61

0.61

0.74

1.30

1.80

5.53

14.1

April

0

0.30

0.67

1.50

3.30

5.79

7.90

9.44

11.5

13.9

15.8

18.4

21.5

24.3

28.2

32.5

36.7

44.0

62.4

May

0.10

0.38

1.50

2.30

2.90

3.60

5.64

6.21

7.15

7.60

8.92

10.0

11.5

13.3

15.3

17.5

20.9

28.2

72.9

June

0.10

0.38

1.10

1.80

2.20

2.20

2.80

3.50

3.50

4.73

5.19

5.84

6.72

7.20

7.68

10.4

15.0

22.2

33.6

July

0

0.18

0.37

0.45

0.79

1.20

1.40

1.70

2.00

2.50

2.50

3.60

3.60

4.30

4.30

6.33

7.13

9.87

18.9

Aug.

0

0

0

0

0.20

0.39

0.46

0.55

0.78

0.92

1.30

1.50

1.80

2.20

3.00

3.00

3.60

4.30

8.55

Sept.

0

0

0

0.18

0.18

0.29

0.40

0.47

0.54

0.63

0.74

1.00

1.20

1.40

1.40

1.40

1.90

2.50

4.00

Oct.

0

0.20

0.30

0.40

0.46

0.80

0.80

0.92

1.10

1.40

1.80

2.10

2.40

2.80

2.80

3.20

4.20

4.20

5.60
05068000 SAND HILL RIVER AT BELTRAMI, MN-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

Recurrence

. ..... interval probability (years)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum

instantaneous 

(ft3/s)

13.9

22.4

28.9

39.4

71.1

129

176

245

304

369

441

548

3-day period 7-day period

7.29 4.26

13.6 9.10

18.7 13.2

27.1 20.3

52.9 42.1

97.6 79.1

132 106

179 140

216 165

254 190

294 215

ng ng

15-day period 30-day period

2.17 1.08

5.56 3.26

8.71 5.48

14.3 9.66

31.8 23.8

59.5 47.1

77.6 62.2

98.6 79.3

112 90.3

125 99.8

136 108

ng ng

Probability of occurrence of annual low discharges

[ng, statistic not given]

Minimum mean discharge (f^/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.01 100 ng

0.02 50 ng

0.05 20 ng

0.10 10 ng

0.20 5 ng

0.50 2 ng

3 7

ng 0

ng 0

ng 0

ng 0

ng 0

ng 0

14 30 60

000

000

000

000

000

000

90 120 183

0 0.003 0.057

0 0.006 0.082

0 0.014 0.138

0 0.030 0.213

0 0.068 0.347

0.120 0.262 0.788

49
05068000 SAND HILL RIVER AT BELTRAMI, MN-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0.

0

0

0

152 0.185

0

0

0.031

0.480

0

0

0.224

0.987

0

0

0

7 14 30

March-April-May

0

0

0

0

0

0

0

0

0

0

0

0.346

September-October-November

0

0

0

0.213 0.274

0

0

0.083

0.453

0

0.046

0.159

0.644

50
05068000 SAND HILL RIVER AT BELTRAMI, MN-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ftVs)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1943

1944

1945

1946

1947

1948

1949

1950

Aprils

August 12

April 12

March 28

June 12

April 13

June 2

April 19

-

-

3.88

-

5.20

-

5.00

5.97

179

30

53

42

167

75

163

291

1951

1952

1953

1954

1955

1956

1957

1958

AprilS

April 9

June 17

June 16

April 4

May 13

June 23

July5

4.10

3.20

3.60

-

4.51

4.62

--

3.21

71

46

62

49

54

105

50

22

Annual peak discharge, from highest to lowest, and corresponding gage height

1950

1943

1947

1949

1956

1948

1951

1953

April 19

April 13

June 12

June 2

May 13

April 13

Aprils

June 17

5.97

-

5.20

5.00

4.62

-

4.10

3.60

291

179

167

163

105

75

71

62

1955

1945

1957

1954

1952

1946

1944

1958

April 4

April 12

June 23

June 16

April 9

March 28

August 12

JulyS

4.51

3.88

-

--

3.20

--

-

3.21

54

53

50

49

46

42

30

22

51
05068000 SAND HILL RIVER AT BELTRAMI, MN--Continued

Monthly and annual mean discharges, in cubic feet per second

[Data were not rounded in accordance with U.S. Geological Survey publication standards; , no data]

Year

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

Oct.

..

1.27

3.77

3.95

5.32

2.05

1.77

4.49

3.40

1.02

1.61

1.30

0.655

0.439

0.071

0.252

Nov.

_

1.71

1.98

2.70

2.47

1.46

2.29

5.43

2.47

0.797

2.85

1.22

0.933

0.500

0.660

0.790

Dec.

..

1.43

0.397

1.19

0.181

0.597

0.694

1.10

0.700

1.06

1.10

0.432

0.152

0

0

Jan.

..

0.600

0

0.877

0.032

0.029

0.400

0.700

0.600

0.158

0.813

0.081

0

0

0

Feb.

0

0

0.804

0

0

0.307

0.600

0.500

0

0.739

0

0

0

0.061

March

0.029

12.9

7.25

1.99

0.158

0

0.152

0.500

0.700

4.71

1.10

0

0.019

0.997

0.213

April

17.1

7.44

21.8

18.6

43.1

33.4

20.6

41.6

32.4

25.3

13.7

12.0

11.7

10.9

1.77

0.103

May

17.3

8.69

9.75

11.2

23.8

5.81

18.8

84.2

11.1

3.33

7.13

6.51

3.70

28.5

0.394

0.113

June

16.0

5.05

6.36

4.23

30.4

3.52

18.1

12.3

4.38

0.820

11.3

9.72

8.93

13.0

3.62

0.860

July

4.66

4.04

1.78

4.48

3.86

9.71

22.7

5.68

0.89

11.4

3.28

1.77

1.72

1.44

0.22

2.00
05068500 SAND HILL DITCH AT BELTRAMI, MN

LOCATION.--Lat 47°32'10", long 96°32'00", in SEV4NWV4 sec.21, T.147 N., R.46 W., near center of 

span on downstream side of bridge on U.S. Highway 75,150 ft upstream from Great Northern Railway 

bridge and 0.25 mi south of post office in Beltrami.

DRAINAGE AREA.-Not available.

PERIOD OF RECORD.-March 1943 to September 1958. Winter records incomplete some years. 

Monthly discharge only for some periods, published in WSP 1308.

GAGE. Chain gage. Datum of gage is 883.50 ft above mean sea level, adjustment of 1912 (levels by U.S. 

Army Corps of Engineers). Prior to Aug. 26, 1944, reference point and Aug. 26, 1944, to Nov. 21, 

1948, chain gage, at same site at datum 12.62 ft higher. Nov. 22, 1948, to Sept. 30, 1956, chain gage at 

same site at datum 10.00 ft higher.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 2,460 ft3/s, Apr. 20, 1950, gage height, 

20.99 ft, present datum; maximum gage height, 21.59 ft, present datum, Apr. 19,1950, from 

floodmark, backwater from ice; no flow at times.

500

§400

O

LU

Annual mean discharge

300

HI 

LL

O

CD

13 

O

200

I 

O

100

r i i i

CM CO CO O) O) O)

53
05068500 SAND HILL DITCH AT BELTRAMI, MN-Continued

Statistics of monthly and annual mean discharges

Maximum

Month

October

November

December

January

February

March

April

May

June

July

August

September

Annual

Discharge 

(ft3/s)

53.4

41.7

25.0

14.0

14.4

150

493

588

222

178

113

52.3

122

Water year 

of 

occurrence

1946

1958

1945

1947

1958

1946

1947

1950

1947

1950

1944

1945

1950

Minimum

Discharge 

(ft3/s)

9.57

8.43

5.09

4.90

0.790

0

27.5

23.4

20.6

14.1

8.97

8.49

22.6

Water year 

of 

occurrence

1955

1956

1956

1948

1948

1944

1958

1958

1952

1951

1955

1954

1955

Discharge 

(ft3/s)

21.9

21.0

13.1

8.58

8.32

37.6

196

98.9

76.0

51.6

25.8

20.4

46.2

Mean

Standard 

deviation 

(ft3/s)

12.3

9.32

5.16

2.94

4.01

48.8

144

136

62.0

42.8

25.2

16.0

33.2

Coefficient of 

variation

0.56

0.44

0.39

0.34

0.48

1.30

0.74

1.37

0.82

0.83

0.97

0.79

0.72

Percentage 

of annual 

discharge

3.79

3.63

2.27

1.48

1.44

6.49

33.8

17.1

13.1

8.91

4.46

3.52

100

Annual flow duration

o

z

O

O

HI

W

DC

HI

Q.

IHl

U_

O 

CD

D

O

Z

Hi" 

CD DC

X

O

w

o

1.UUU

700

500

400

300

200

100

70

50

40

30

20

10

7

5

4

3

2

1

1

r

-

-

-

~

"

-

-

I

r

-

L-

-

~

-

i

~

-

r

' 

 | i i i i | , , i i , 1 1 . , | i i , i | i i . i | i i i i | i i i i | , i i i | i i i i | i i i | 1,1 | i ,

-.

-

-

-

~

* ~

.

-

 I

-

 -

 _:

* . -

 ~

" . , :

 j

 jj

-

-

10 20 30 40 50 60 70 80

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

90 95 98

54
05068500 SAND HILL DITCH AT BELTRAMI, MN--Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

4.80

5.00

5.60

6.30

7.00

7.00

7.00

7.40

7.80

7.80

7.80

8.70

8.70

10.3

10.8

10.3

7.75

5.17

2.58

Feb.

0.78

0.99

4.80

4.80

5.40

6.10

6.80

6.80

7.70

7.70

7.70

7.70

9.23

9.88

10.3

12.1

13.3

14.2

14.7

March

0

0.80

3.80

3.80

6.82

7.31

8.32

10.6

11.2

11.9

13.2

14.8

16.9

19.2

21.6

24.8

39.2

101

226

April

12.0

22.5

32.0

45.1

51.2

60.2

73.2

89.3

102

116

136

164

197

225

254

288

337

451

657

May

22.5

25.7

27.8

30.4

33.1

36.0

39.3

43.6

49.6

55.6

61.7

68.2

75.3

84.6

94.7

109

133

178

324

June

17.4

20.4

22.2

24.6

27.5

31.6

34.3

37.8

41.4

44.9

48.1

53.1

61.3

69.3

81.8

106

135

183

252

July

12.2

14.7

16.4

18.6

21.7

24.1

26.3

28.7

32.2

36.0

39.3

42.8

48.6

54.0

58.5

65.4

77.7

94.5

155

Aug.

7.10

7.90

9.24

10.2

11.3

12.4

13.6

15.4

17.1

19.1

21.5

23.4

25.4

28.2

31.2

33.1

34.9

42.7

61.1

Sept.

7.10

8.40

9.10

10.3

11.3

11.9

12.5

13.2

13.9

14.8

15.9

16.7

17.5

18.4

20.2

24.5

36.5

46.1

62.3

Oct.

8.20

10.2

11.4

12.6

13.3

14.0

15.4

17.6

18.7

19.6

20.5

22.0

23.1

24.2

25.7

30.2

35.4

43.8

48.3
05068500 SAND HILL DITCH AT BELTRAMI, MN--Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

Recurrence

. ...... interval probability . .

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum

instantaneous 

(ft3/s)

68.8

124

168

243

478

918

1,280

1,800

2,250

2,730

3,250

4,010

3-day period 7-day period

50.1 51.8

92.9 87.0

129 116

192 164

408 328

866 673

1,280 992

1,950 1,510

2,550 2,000

3,240 2,570

4,040 3,250

ng ng

15-day period

46.2

71.0

90.7

124

235

476

706

1,100

1,480

1,940

2,510

ng

30-day period

34.6

49.5

61.7

82.9

160

351

559

958

1,390

1,970

2,760

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (ffVs)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- vai 

ability (years)

0.05 20 1.09

0.10 10 1.86

0.20 5 3.16

0.50 2 6.25

3 7

1.09 1.11

1.87 1.92

3.19 3.31

6.34 6.59

14 30 60

1.18 1.23 1.71

2.07 2.18 2.76

3.58 3.80 4.42

7.12 7.59 8.17

90

3.10

4.07

5.46

8.65

120 183

5.34 7.62

6.05 8.18

7.05 9.02

9.41 11.3

56
05068500 SAND HILL DITCH AT BELTRAMI, MN-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

1.14

2.10

3.80

8.08

1.14

2.10

3.80

8.08

1.20

2.17

3.88

8.12

1.32

2.32

4.06

8.24

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

5.30

6.50

8.30

13.1

5.70

7.00

8.97

14.4

6.16

7.51

9.56

15.3

7.28

8.94

11.5

18.5

0

0.820

3.08

9.30

7 14 30

March-April-May

0

0.825

3.10

9.37

0

0.919

3.41

10.0

0

1.95

4.91

15.6

September-October-November

5.00

5.89

7.23

10.9

5.34

6.28

7.71

11.8

5.99

6.95

8.42

12.6

7.15

8.11

9.60

14.0

57
05068500 SAND HILL DITCH AT BELTRAMI, MN-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge Water 

year

Date

Gage 

height 

(feet)

Peak

discharge 

(ft3/s)

1943

1944

1945

1946

1947

1948

1949

1950

1950

1947

1948

1951

1943

1946

1955

1956

Aprils 

August 15 

April 1 

March 25 

April 16 

April 11 

June 2 

April 20

April 20 

April 16 

April 11 

April 9 

April 5 

March 25 

April 7 

April 19

Annual peak discharge, by year, and corresponding gage height

741 1951 April 9

226 1952 April 12

344 1953 March 29

564 1954 April 14

7.57 1,220 1955 April 7

7.20 1,050 1956 April 19

425 1957 June 28

2,460 1958 JulyS

Annual peak discharge, from highest to lowest, and corresponding gage height

2,460 1949 June 2

8.46

10.07

7.57

7.20

8.46

10.07

1,220

1,050

823

741

564

551

480

1957

1945

1952

1954

1944

1953

1958

June 28 

April 1 

April 12 

April 14 

August 15 

March 29 

JulyS

823

315

190

278

551

480

370

95

425

370

344

315

278

226

190

95

58
05068500 SAND HILL DITCH AT BELTRAMI, MN-Continued

Monthly and annual mean discharges, in cubic feet per second

[Data were not rounded in accordance with U.S. Geological Survey publication standards; , no data]

Year

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

Oct.

21.8

42.4

53.4

27.8

19.0

12.3

17.1

24.9

19.9

14.9

11.5

9.57

10.5

15.1

29.0

Nov.

16.4

37.6

33.7

21.0

19.7

16.7

16.8

18.6

17.7

18.0

13.0

14.5

8.43

21.8

41.7

Dec.

25.0

13.0

14.8

13.4

11.0

-

11.7

12.0

9.45

5.09

10.5

18.6

Jan.

14.0

4.90

8.11

7.00

~

-

6.69

10.6

8.00

5.21

9.15

12.1

Feb.

14.0

0.790

8.04

5.00

--

7.51

10.0

8.43

6.30

8.73

14.4

March

0

129.2

150.0

15.0

2.59

13.1

4.52

-

57.5

13.5

17.0

7.23

53.7

24.8

April

213.0

38.5

244.2

181.5

492.8

307.7

133.4

470.3

360.6

167.9

59.4

102.9

118.8

115.7

97.7

27.5

May

93.7

39.8

126.1

73.4

159.2

64.9

43.7

588.1

110.1

42.5

45.9

49.3

28.8

58.2

34.9

23.4

June

208.7

46.4

88.1

44.5

222.0

30.0

120.7

105.6

38.6

20.6

58.1

45.4

26.0

47.2

88.2

25.6

July

54.5

89.6

44.0

42.8

47.2

24.6

51.5

178.1

14.1

28.5

40.9

23.8

14.4

14.6

111.4

45.1
05069000 SAND HILL RIVER AT CLIMAX, MN

LOCATION.--Lat 47°36'43", long 96°48'52", in NE,^^ sec.30, T.148 N., R.48 W., Polk County, 

Hydrologic Unit 09020301, on left bank 25 ft upstream from bridge on U.S. Highway 75 in Climax 

and 3.7 mi upstream from mouth.

DRAINAGE AREA.--426 mi2 .

PERIOD OF RECORD.-March 1943 to September 1984, June 1985 to current year. Winter records 

incomplete prior to 1947. Monthly discharge only for some periods, published in WSP 1308 and 

1728. October 1984 to May 1985, operated as a high-flow partial-record station.

GAGE.-Water-stage recorder. Datum of gage is 820.10 ft above mean sea level (levels by U.S. Army 

Corps of Engineers). Prior to Oct. 1, 1966, nonrecording gage at site 3.2 mi upstream at datum 

12.78 ft higher. Oct. 1, 1966, to Sept. 5, 1989, nonrecording gage at present site and datum.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 4,560 ft3/s, Apr. 14, 1965, gage height, 

17.81 ft; maximum gage height, 32.79 ft, Apr. 23, 1979, from floodmark, backwater from Red River of 

the North; minimum daily discharge, 1.0 ft3/s, Jan. 17-18, 1962.

Annual mean discharge

suu 

O

§400

O 

UJ 

CO

cc

UJ 

0.

UJ

u.

o

m

O

Z 200

UJ 

O 

CC

I 

o

CO 100

o

ft

I I I I I I I I I I I I I

-

.

-

I I I I I I I I I I I I I

II I I I I

I

-

.

-

Ill Illlli ll i ll , III ,

60
05069000 SAND HILL RIVER AT CLIMAX, MN--Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

4.40

4.90

6.10

6.70

7.50

8.60

10.1

10.9

11.5

12.0

12.6

13.2

14.0

14.9

15.8

17.4

18.8

21.1

25.9

Feb.

4.90

5.40

6.10

6.80

7.60

7.60

9.48

10.3

11.4

12.0

12.5

13.0

13.6

14.2

14.8

16.0

17.4

18.7

23.2

March

6.32

8.02

8.63

10.2

11.4

12.6

13.6

14.6

16.4

18.7

20.7

23.8

28.7

36.3

50.2

71.7

103

190

377

April

24.0

33.4

43.6

52.5

61.3

72.8

86.0

99.8

122

147

176

215

266

322

385

479

622

857

1,400

May

24.3

29.6

32.9

35.8

39.0

42.4

46.7

51.4

57.6

66.2

74.4

82.7

93.5

107

124

150

179

231

332

June

15.4

19.7

23.0

25.6

28.8

32.4

36.6

40.1

43.5

48.0

52.7

59.9

67.5

75.6

88.0

110

145

213

333

July

10.0

13.3

15.1

16.6

18.2

20.2

22.4

25.4

29.2

33.2

37.3

41.7

47.2

54.8

64.8

77.4

102

152

255

Aug.

6.62

7.72

8.78

10.4

11.3

12.6

13.8

15.1

16.6

18.2

20.1

22.6

25.4

28.6

32.6

38.0

46.7

62.2

120

Sept.

6.50

7.40

9.35

10.3

11.6

12.5

13.5

14.6

15.7

17.1

18.5

20.0

21.8

24.2

28.2

36.0

46.2

61.1

84.5

Oct.

9.36

10.8

11.8

12.7

13.5

14.5

15.6

17.6

19.4

21.1

22.2

23.7

25.9

28.8

32.3

37.5

50.9

67.7

95.0
05069000 SAND HILL RIVER AT CLIMAX, MN-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence]

Month

October

November

December

January

February

March

April

May

June

July

August

September

Annual

1,000 

700

500 

400

Z 300

0 200 

LU 

CO

£ 100 

£L 

1- 70 

UJ 

UJ 50

OQ 30

O 20

Z

g 10

1 7

O 5 

CO 4

0 3

2

1,

Maximum Minimum Mean

nio~ha,~a Water year ni.^h«w,« Water year ni«/.h«r«o Standard Coeffi- D scharge . Discharge * Discharge . . A . ^ . m3/av of m3/,\ of 3/ s deviation cientof

(lt/s) occurrence (n /s) occurrence (n s) (ft3/s) variation

224 1972 9.43 1977 31.7 34.9 1.10

209 1972 8.64 1956 27.1 28.4 1.05

48.7 1972 5.11 1964 16.9 9.18 0.54

30.1 1986 2.02 1962 12.4 5.96 0.48

46.8 1984 3.55 1962 12.2 6.80 0.56

385 1966 5.81 1948 74.2 91.8 1.24

946 1978 25.3 1981 343 285 0.83

1,160 1950 23.7 1958 117 163 1.39

596 1984 11.5 1980 95.6 105 1.10

376 1994 8.95 1980 67.5 75.8 1.12

426 1993 6.30 1961 38.2 67.3 1.76

124 1994 6.49 1955 27.1 25.2 0.93

204 1950 18.4 1977 71.3 43.1 0.60

Annual flow duration

i_ i i | i i i , | i i i . i i i i i i i i i i | i i . i | i i i i | i i i i i . . i i | i i . i | i i i i | iii |

L

~ 

 

: 

'*** .

 .

-

, i , , , , i , , , , , , , , , i , , , , i , , , , i , , , , i , , , , i , , , , i , , , , i , , , , i , , , i

I 5 10 20 30 40 50 60 70 80 90 95

Percentage 

of annual 

discharge

3.67

3.14

1.96

1.44

1.42

8.60

39.7

13.6

11.1

7.82

4.42

3.14

100

-

j

-

-

.:

-

;

98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

61
05069000 SAND HILL RIVER AT CLIMAX, MN-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

Recurrence

probability

0.99

0.95

0.90

0.80

0.50

0.20

0.10

0.04

0.02

0.01

0.005

0.002

interval 

(years)

1.01

1.05

1.11

1.25

2

5

10

25

50

100

200

500

Maximum

instantaneous 

(ft3/s)

106

218

314

481

1,040

2,120

3,010

4,290

5,350

6,490

7,700

9,420

3-day period 7-day period

73.3 60.1

158 128

233 188

369 296

847 673

1,830 1,440

2,660 2,110

3,920 3,100

4,980 3,930

6,140 4,850

7,400 5,850

ng ng

15-day period

45.7

95.7

140

217

482

1,010

1,450

2,100

2,640

3,220

3,850

ng

30-day period

34.4

69.6

99.9

153

328

670

951

1,360

1,700

2,070

2,460

ng

Probability of occurrence of annual low discharges

Non- Recurexceed- rence

ance interprob- val 

ability (years)

0.05 20

0.10 10

0.20 5

0.50 2

1

2.55

3.30

4.40

7.12

3 7

2.68 2.88

3.48 3.70

4.65 4.90

7.46 7.79

Minimum mean discharge (n^/s)

Number of consecutive days

14 30 60

3.22 3.71 4.56

4.05 4.60 5.45

5.24 5.86 6.71

8.09 8.84 9.75

90

5.37

6.30

7.64

11.0

120 183

6.52 8.13

7.46 9.13

8.84 10.7

12.4 15.0

63
05069000 SAND HILL RIVER AT CLIMAX, MN--Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

2.80

3.81

5.34

9.14

3.01

4.06

5.64

9.48

3.34

4.37

5.89

9.61

3.77

4.79

6.28

9.91

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

4.67

5.57

7.00

11.3

5.57

6.50

7.99

12.6

6.10

7.14

8.80

14.0

7.57

8.75

10.7

17.1

5.01

6.19

7.88

12.0

7 14 30

March-April-May

5.69

6.77

8.36

12.6

6.08

7.26

9.04

14.0

7.22

9.35

13.0

25.6

September-October-November

4.83

5.67

6.97

10.7

5.64

6.61

8.10

12.3

6.42

7.42

8.96

13.4

7.34

8.52

10.3

15.6

64
05069000 SAND HILL RIVER AT CLIMAX, MN--ContJnued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(frVs)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(frVs)

Annual peak discharge, by year, and corresponding gage height

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

April 7

August 18

April 1 1

March 27

April 19

April 14

June 1

April 22

April 1 1

April 12

March 29

June 15

AprilS

April 20

June 29

JulyS

April 2

April 6

March 25

JulyS

April 7

April 17

April 14

April 2

March 30

June 7

10.48

-

9.18

--

13.28

-

10.40

16.31

11.90

9.52

-

-

10.35

10.72

7.06

--

7.64

8.80

4.86

11.70

6.34

9.40

17.81

17.33

14.46

12.71

941

226

767

675

1,840

1,640

990

3,040

1,250

544

219

489

842

1,370

481

168

310

460

140

1,570

300

730

4,560

4,220

2,060

1,400

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

April 14

April 16

AprilS

April 13

March 17

April 16

April 20

April 2

May 31

April 10

April 20

April5

May 24

April 15

June 14

June 9

August 17

March 29

July 29

March 5

March 10

June 2

May 23

August 25

August 3

JulyS

24.57

13.64

13.60

14.03

11.25

15.87

19.24

13.60

--

27.21

--

10.10

7.20

10.00

11.00

15.60

10.50

16.21

7.95

8.94

25.00

7.52

8.71

-

16.13

12.67

4,180

1,980

1,460

2,160

897

1,890

2,550

1,390

298

3,060

3,400

879

362

820

1,230

2,850

974

2,000

492

610

2,430

405

613

312

1,320

1,660

Annual peak discharge, from highest to lowest, and corresponding gage height

1965

1966

1969

1979

1978

1950

1984

1975

1989

1972

1967

1986

1970

1974

1947

1994

1948

April 14

April 2

April 14

April 20

April 10

April 22

June 9

April 20

March 10

April 13

March 30

March 29

April 16

April 16

April 19

JulyS

April 14

17.81

17.33

24.57

-

27.21

16.31

15.60

19.24

25.00

14.03

14.46

16.27

13.64

15.87

13.28

12.67

--

4,560

4,220

4,180

3,400

3,060

3,040

2,850

2,550

2,430

2,160

2,060

2,000

,980

,890

,840

,660

,640

1962

1971

1968

1976

1956

1993

1951

1983

1949

1985

1943

1973

1980

1955

1982

1945

1964

JulyS

AprilS

June 7

April 2

April 20

August 3

April 1 1

June 14

June 1

August 17

April 7

March 17

AprilS

AprilS

April 15

April 1 1

April 17

11.70

13.60

12.71

13.60

10.72

16.13

11.90

11.00

10.40

10.50

10.48

11.25

10.10

10.35

10.00

9.18

9.40

,570

,460

,400

,390

,370

,320

,250

,230

990

974

941

897

879

842

820

767

730

65
05069000 SAND HILL RIVER AT CLIMAX, MN-Continued

Annual peak discharge and corresponding gage height Continued

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(tf/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(tf/s)

Annual peak discharge, from highest to lowest, and corresponding gage height Continued

1946

1991

1988

1952

1987

1954

1957

1960

1990

March 27

May 23

March 5

April 12

July 29

June 15

June 29

April 6

June 2

~

8.71

8.94

9.52

7.95

-

7.06

8.80

7.52

675

613

610

544

492

489

481

460

405

1981

1992

1959

1963

1977

1944

1953

1958

1961

May 24

August 25

April 2

April 7

May 31

August 1 8

March 29

July 5

March 25

7.20

-

7.64

6.34

--

--

--

-

4.86

362

312

310

300

298

226

219

168

140

66
0)

c'43

O 

O

X

<

o

OC 

LJJ

C/> £

o 

o 

o

O) 

(D

O

in

o

d

data] s; no --,

t secon per ation standard

in cubicfee public Srvey 

discharges, Geological .S. 

nual mean >rdance withU

§ H

ithly and in oudeda<

Moi 

)ata notwere r

CO

c 

<

d>

<

3 

^

V

C 

3 -9

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i_

Q. 

<

JC

2(0

*u.

(0

Jo

1

tjO

1

! ! ! ! p^ 

rs

ON (N in OO ON 

 t^ Tt 

Tj- PO in ON PO

PO <N PO PO 

(N o r- PO ^Jso oo (N m

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rs <N TJoo (N ro m ON

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OO ON O (N TJ- TJ- >o >o >n

ON ON ON ON ON

 <N (N t^ sO

O f> >O sO ON

ON ON 

m ON rj- in O

so r~ so (N 

 in

\O ON rj- in sO

oo O (N m 

rg rg

ON ON in so O Tj- rs m

m o TJ- o

O T O oo 

oo oo m so 

ON o in m 

in r-- in 

rs rs r^ m

ON * O SO O 

ON ^ in (N

 m 

rs <N * -«t rr so

so rs TJ-

^- SO Tloo ^ m TJ- in

o so r- »n rO ON m rg ON (N oo <N m

t~- »o so >o oo

(N m

m ON m i^-

m O oo so O

r- in ON so ** 

O m (N oo O 

rs <N

oo in oo TJ- so

oo (N O O en

ro TJ- in so r- 

>n »o >o >o >o

ON ON ON ON ON

 OO CO OO ON

so TJ- m O rs

(N (N PO <N O

ON m

en oo in oc oo

 r- TJ- ON so 

 TJ0 

ON m PO 

r- TJ- so so o

ON in sO (N O

(N SO O OO 

SO Tt ON 

rs

o in o m o

<N rN Tt ON

rs

en oo ON <N 

<N so m T}- m 

rs

r- so oo rO OO (N (N m

m r~ so «/"> >o 

 rs

rs ON m m rs

rs so so ^i so (N m so

TJ- oo oo in rj- oo r- (N in

rs pn ON f~ m

 rs

PH Tj- (N SO (N

TJ- oo oo ** (N rs PH in

r- r- (N oo so

o m oo rj in

pn r- so <N TJ- 

 <T ON r- oo <N

 rs oo rOO ON O (N

>O >O SO SO SO

ON ON ON ON ON

oo »n t-- ON PO

rs * PO O 

ro TJ- in so

O >o r~ ON 

O TJ- O rs

 PO PO fN 

 o TJ- t^ r-

(N r- in t^ (N (N (N 

Tt ON (N in

PO oo TJ- in so

PO SO in <N (N

t~- oo so r- PO 

m TJ- rs so r-

(N oo in (^ ^*-

r-- oo in (N

Tj- OO PO ON O

Tj- SO SO T O 

ON <N PO '^f 

(N ON ON PO

rj- 00 sO sO O

r- o rr o PO OO ON

pn

Tt ON TlON in PO <N PO

 rj- ON OO SO Tjin o (N so oo in

ON SO O OO <N

rj- in r- if»

r- ir> rs o

oo rj- oo so PO PO

(N OO ON (N <N

PO PO 

O OO OO sO ON

sO O T oo

PO ^t in so rsO so so sO so 

ON ON ON ON ON

>o TJ- rs oo r~

O oo o rs TJ- in oo in in

fS OO PO <N Tj-

 <N PO 

o TJ- oo in TJ-

>o o so o PO (N PO

oo o r- r- ON 

TJ- in PO rs

PO (N PO IO (N

ON PO in SO ON 

sO O SO PO Tjrs 

o r- (N PO m

t^ ON ON 

PO (N rj- SO SO 

 rs 

ON O PO SO

r- ON in so

SO SO IT) TjO 

oo in r- PO in

o r- (N PO oo

 PO

ON so m 

r-- in <N ON

O

(N r- o so oo

o TJ- PO in 

 rs

PO (N SO OO

ON rj- r- rj- m

(N ON ON O ON

 PO O 

<N

 ^f O m o in

PO o »n PO

<N

oo ON O (N

ON ON ON ON ON

ON oo oo oo TJ-

 * Tj- Tt O 00 3- _- m 

TJPO O vO PO 1^-

O oo oo r- in

oo 

sO

rs TJ- m O so

 (N PO 

(N Tj- PO in ON

(N ON (N ON O

 oo 

>O >O ON PO vO

(N C-- OO PO O

rs oo Tj- PO Tjin TJ- oo PO o

r- o o <N

PO O (N Tj- PO 

PO (N

 in oo so

 so so in in in

 o in oo ON

OO ON PO PO OO

rg rg oo 

rs

oo 

rs o r- 

(N oo PO in oo

sO

O r- ON ON OO

 oo in t--

rs PO t-- ON oo

r- so ON (N

PO Tj- PO (N 

PO in O in ON rj-

(N in OO (N ON

ON ON ON ON ON

67
05069000 SAND HILL RIVER AT CLIMAX, MN-Continued

Monthly and annual mean discharges, in cubic feet per second Continued

[Data were not rounded in accordance with U.S. Geological Survey publication standards; --, no data]

Year

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

Oct.

21.1

13.6

18.0

15.4

59.5

81.8

70.2

88.1

24.0

26.5

13.2

14.9

9.99

12.9

22.0

22.7

Nov.

26.3

14.8

28.1

15.3

35.4

27.5

49.9

47.0

28.1

27.2

17.0

14.5

12.1

10.7

27.2

21.6

Dec.

27.9

13.3

24.0

9.56

22.3

26.9

35.9

38.1

22.4

24.5

15.0

7.08

10.3

10.0

23.6

25.2

Jan.

18.3

12.1

19.2

8.05

12.1

19.2

26.8

30.1

17.2

20.3

13.8

8.58

6.27

10.5

14.2

17.4

Feb.

13.2

12.9

21.3

12.2

10.3

19.0

46.8

22.9

16.1

16.4

11.2

11.3

10.9

14.1

12.1

14.0

March

37.2

17.2

42.9

32.8

49.9

333.9

201.5

217.4

185.2

126.4

14.2

59.7

51.0

80.2

39.4

52.5

April

946.0

868.9

280.0

25.3

347.5

181.4

336.8

579.4

80.1

209.1

776.6

88.6

48.9

53.9

338.5

221.7

May

63.4

160.5

33.5

50.7

144.4

54.7

55.5

269.1

110.1

37.1

79.7

39.3

97.1

36.3

46.2

105.3

June

53.5

71.1

11.5

38.8

35.7

228.1

595.8

168.3

69.5

60.1

36.4

40.8

58.9

30.8

20.4

50.8

175.0

July

21.6

166.0

8.95

24.3

42.4

113.2

44.6

181.3

82.9

138.3

13.8

28.4

16.8

31.2

28.3

224.9

375.5
05074500 RED LAKE RIVER NEAR RED LAKE, MN

LOCATION.--Lat 47°57'27", long 95°16'35", in SW^NW^ sec.28, T.152 N., R.36 W., Clearwater 

County, Hydrologic Unit 09020302, on Red Lake Indian Reservation, on left bank 50 ft downstream 

from dam at outlet of Lower Red Lake and 13 mi northwest of city of Red Lake.

DRAINAGE AREA.-- 1,950 mi2, approximately.

PERIOD OF RECORD.~May 1933 to September 1994. Monthly discharge only for May 1933, published 

WSP 1308.

GAGE. Water-stage recorder. Datum of gage is 1, 100.00 ft, adjustment of 1912 (levels by U.S. Army 

Corps of Engineers). Prior to Sept. 7, 1934, nonrecording gage at site 50 ft upstream at datum 69.00 ft 

higher. Sept. 7, 1934, to Nov. 26, 195 1, water-stage recorder at present site at datum 69.00 ft higher. 

Nov. 27, 1951, to Sept. 30, 1986, water-stage recorder at present site at datum 67.00 ft higher.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 3,600 ft3/s, June 25, 1950, gage height, 

78.19 ft; no flow at times.

Annual mean discharge

I.OUU

1,400

SECOND 

to8

EC 

LU

^ 1,000

LU 

LU 

LL

9 800

0

- 600

ISCHARGE

Q

200

n

I I I I I I I I I I I I II

-

-

I I I I I I I I I I .1 ..I

-

-

-

il

-

-

-

_

-

-

inoinoinoinoinoinoinoinoinoin

Ml j_

69
DISCHARGE, IN CUBIC FEET PER SECOND

-t ro co *-oi -J o 

co -t>-oi -vi o o o oo o o

TJm

DO

O 

m

OTl

m

Tl~

Is

CO

m

m

O

o 

JJ

O oo m o

m

o

m

o

> v> > £r £r 2 >

1 1 1 & 1 1 1

fc 3 »

K> ~J 4*- oo O ON K>

O O O O O O O

SO SO SO SO SO SO SO

 o <~* o o o 

tyi ~ K> 4*. K> O 4*-

t-/i ON ^i ON » - ON ^5

«y> " ' U) U) «y> O O

u>

SO SO SO SO SO SO SO

U) U) U) U) U) U) U)

ON £> ON 4^. u> u> ON

ON ON ON OJ ^i oo OJ 

so 4^ so 4^ <-^ w K>

OJ f^ t^J ^N. ^N. ^N. |sj

U) H- OO U) OO 4^- SO 

O U) OO K> ^- K> SO

O O O O O O O

^1 OO OO OO OO SO SO 

O SO U) *- 4i. N> O

o 

O oo oo so O oo wi

U> 4^. t/i K> ON so

2 £ £ 

1 II 

H- M- 

4^. U) 4^. 

o o o 

SO SO SO 

O O O 

tyi 4^ i*> 

SO O Wi 

SO SO SO 

OJ OJ OJ 

lo ON ON 

U) ON 

U) U) U> 

K> c/» t/i 

ON ^ ON 

O O O 

^ ^ ^ 

^1 ON ON 

^1 00 00 

t/i K> t>i 

oo ON tyi 
05074500 RED LAKE RIVER NEAR RED LAKE, MM--Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

3.42

45.0

54.4

66.9

115

163

211

298

390

491

541

590

640

688

738

786

836

941

1,050

Feb.

2.90

47.6

59.3

66.7

127

168

218

296

374

451

523

575

628

680

732

785

843

940

1,040

March

3.40

42.9

60.6

70.6

102

135

180

244

327

380

430

487

545

616

686

749

812

875

1,050

April

11.6

29.5

39.9

54.4

65.3

75.4

104

123

163

211

263

317

406

512

569

622

704

842

1,020

May

3.81

17.2

33.3

52.5

63.7

73.2

111

197

294

382

473

537

598

676

859

959

1,050

1,130

1,310

June

4.05

22.5

49.2

70.7

85.6

132

220

298

372

476

604

744

833

894

956

1,020

1,130

1,250

1,460

July

13.4

41.3

60.0

76.7

120

168

216

271

342

444

567

665

742

809

875

950

1,050

1,150

1,360

Aug.

6.11

34.4

56.4

76.8

101

136

194

247

319

402

468

542

622

699

772

845

938

1,060

1,180

Sept.

6.00

28.7

54.8

68.0

90.1

136

176

235

274

348

412

474

564

681

796

881

966

1,100

1,250

Oct.

8.85

52.1

62.3

85.4

122

153

186

220

260

306

360

455

553

647

783

878

964

1,090

1,340
05074500 RED LAKE RIVER NEAR RED LAKE, MN~Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

. . ...... interval probability (years)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 3-day period

24.3 16.7

76.7 65.1

133 122

247 240

685 683

1,560 1,440

2,240 1,920

3,120 2,430

3,770 2,740

4,400 3,000

5,000 3,210

5,740 ng

7-day period 15-day period 30-day period

15.0

60.0

114

228

662

1,420

1,910

2,440

2,770

3,030

3,250

ng

13.3

55.5

107

217

646

1,400

1,880

2,400

2,710

2,970

3,180

ng

10.5

47.6

95.4

200

620

1,360

1,830

2,320

2,600

2,830

3,010

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (f^/s)

Number of consecutive days

Non- Recurexceed- rence 

ance inter- 1 

prob- val 

ability (years)

0.05 20 0.700

0.10 10 3.46

0.20 5 11.5

0.50 2 59.6

3 7 14

0.773 '1.35 1.95

3.96 U.90 5.93

13.3 14.9 18.8

67.9 91.8 98.0

30 60

3.66 4.97

9.89 12.9

28.0 35.8

129 165

90

8.27

20.1

51.4

210

120 183

10.3 14.2

24.5 31.2

61.4 72.3

241 265

Graphical interpretation.

72
05074500 RED LAKE RIVER NEAR RED LAKE, (UN-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

5.64

20.0

69.6

342

6.15

21.2

72.2

354

6.42

21.8

73.7

361

6.75

22.7

76.2

374

J une- July- August

0.05

0.10

0.20

0.50

20

10

5

2

1.81

5.92

20.7

137

2.62

8.70

30.3

185

4.18

12.8

41.2

222

9.11

23.4

63.0

274

1.83

5.87

18.3

94.9

7 14 30

March-April-May

! 1.90

5.91

22.0

134

2.77

8.48

27.2

147

4.17

12.0

36.2

182

September-October-November

1.12

7.01

27.0

153

3.86

12.7

39.9

194

5.96

16.1

45.9

217

10.1

23.5

58.2

238

'Graphical interpretation.

73
05074500 RED LAKE RIVER NEAR RED LAKE, MN-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

d*3*)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1933

1934

1935

1936

1937

1938

1939

1940

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

July 4

May 1

June 13

September 14

September 30

July5

June 16

June 2

June 7

May 13

June 3

June 17

June 1

May 31

June 10

May 23

April 24

June 25

October 6

May 18

June 15

June 29

Aprils

October 12

July 20

October 1

November 18

November 19

June 24

August 23

October 5

72.02

71.52

72.02

--

72.14

74.80

74.76

75.18

-

75.58

--

-

76.27

75.81

76.41

-

-

78.19

75.57

72.97

70.97

-

--

69.53

--

73.10

-

-

-

-

46.0

57.0

140

52.0

61.0

317

432

534

449

926

1,510

1,420

1,650

1,400

1,960

1,210

561

3,600

2,320

1,610

492

725

384

252

1,870

1,360

68.0

162

240

1,260

1,250

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

October 23

July 22

May 19

July 2

July 16

June 5

October 20

June 19

May 17

October 21

July 10

July 31

October 14

October 1

July5

July 3

November 29

August 3 1

July 4

October 14

July 13

May 31

May 28

October 3

August 23

July 20

July 3

June 26

September 19

August 30

June 28

--

--

--

--

--

--

--

--

--

-

75.02

73.06

70.30

72.88

72.21

71.97

71.46

72.94

72.23

73.28

72.41

72.59

72.45

69.54

70.44

--

70.19

--

73.81

~

1,030

848

1,480

1,240

705

1,200

1,190

889

1,220

808-

1,440

1,680

1,560

252

996

1,260

742

461

1,170

961

1,100

1,200

1,470

940

108

72.0

72.0

76.0

225

955

1,040

Annual peak discharge, from highest to lowest, and corresponding gage height

1950

1951

1947

1957

1975

1945

1952

1976

1943

1966

1986

1974

June 25

October 6

June 10

July 20

July 31

June 1

May 18

October 14

June 3

May 19

May 28

July 10

78.19

75.57

76.41

-

75.02

76.27

72.97

73.06

-

--

72.59

--

3,600

2,320

1,960

1,870

1,680

1,650

1,610

1,560

1,510

1,480

1,470

1,440

1944

1946

1958

1962

1979

1963

1967

1972

1948

1969

1985

1970

June 17

May 31

October 1

August 23

July 3

October 5

July 2

May 17

May 23

June 5

May 31

October 20

--

75.81

73.10

--

72.21

--

--

-

-

-

72.41

--

1,420

1,400

1,360

1,260

1,260

1,250

1,240

1,220

1,210

1,200

1,200

1,190

74
05074500 RED LAKE RIVER NEAR RED LAKE, MN--Continued

Annual peak discharge and corresponding gage height-Continued

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(tf/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, from highest to lowest, and corresponding gage height Continued

1982

1984

1994

1964

1978

1983

1993

1987

1942

1971

1965

1973

1980

1954

1968

1949

1940

1953

1981

July 4

July 13

June 28

October 23

July5

October 14

August 30

October 3

May 13

June 19

July 22

October 21

November 29

June 29

July 16

April 24

June 2

June 15

August 3 1

72.94

73.28

--

--

72.88

72.23

73.81

72.45

75.58

~

-

~

71.97

--

--

-

75.18

70.97

71.46

1,170

1,100

1,040

1,030

996

961

955

940

926

889

848

808

742

725

705

561

534

492

461

1941

1939

1955

1938

1956

1977

1961

1992

1960

1935

1988

1991

1989

1990

1959

1937

1934

1936

1933

June 7

June 16

AprilS

JulyS

October 12

October 1

June 24

September 19

November 19

June 13

August 23

June 26

July 20

July 3

November 1 8

September 30

May 1

September 14

July 4

--

74.76

--

74.80

69.53

70.30

--

--

--

72.02

69.54

70.19

70.44

--

--

72.14

71.52

--

72.02

449

432

384

317

252

252

240

225

162

140

108

76.0

72.0

72.0

68.0

61.0

57.0

52.0

46.0

75
SO SO SO SO sO 

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Ul 4V Ui ON -^1 

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77
05075000 RED LAKE RIVER AT HIGH LANDING NEAR GOODRIDGE, MN

LOCATION.-Lat 48°02'34", long 95°48'28", in NWNW^ sec.28, T.153 N., R.40 W., Pennington 

County, Hydrologic Unit 09020303, on left bank 50 ft upstream from highway bridge at High Landing, 

7 mi south of Goodridge and 33 mi upstream from Thief River.

DRAINAGE AREA.-2,300 mi2, approximately.

PERIOD OF RECORD.-September 1929 to current year. Prior to October 1930, published as "at 

Kratka".

GAGE.-Water-stage recorder. Datum of gage is 1 , 1 4 1 .57 ft above sea level, adjustment of 1 9 1 2 (levels by 

U.S. Army Corps of Engineers). See WSP 1308 or 1738 for history of changes prior to Oct. 1, 1949.

EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 4,060 ft3/s, July 7, 1975, gage height, 

13.39 ft; maximum gage height, 13.44 ft, July 3, 1975; no flow at times.

Annual mean discharge

SECOND

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78
05075000 RED LAKE RIVER AT HIGH LANDING NEAR 

GOODRIDGE, MN-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence]

Maximum

.. ^ Discharge 

Month <ft3/s)

October 1,960

November 1,730

December 1,540

January 1,420

February 1,370

March 1,450

April 1,980

May 3,180

June 2,160

July 2,470

August 1,480

September 1,730

Annual 1,410

Water year 

of 

occurrence

1951

1951

1951

1951

1951

1951

1951

1950

1950

1975

1975

1950

1951

Minimum Mean

ni<*~Ho,,.A Water year ni«^K.«,. Standard Coeffim3/ of S« deviation cientof

* s' occurrence * s'' (ft3/s) variation

2.11 1934 523 490 0.94

1.61 1934 492 422 0.86

0 1934 447 363 0.81

0 1934 446 366 0.82

0 m 443 365 0.82

0 m 476 381 0.80

24.7 1933 652 531 0.81

5.58 1933 658 617 0.94

1.04 1936 658 542 0.82

5.92 1934 567 511 0.90

0.026 1934 495 421 0.85

0 1934 516 445 0.86

6.21 1934 531 396 0.75

Percentage 

of annual 

discharge

8.20

7.72

7.02

7.00

6.95

7.47

10.2

10.3

10.3

8.90

7.76

8.10

100

Annual flow duration

7,000 '-

5,000 -

4,000 r

3,000 -

Z 2,000 r

o ; 

UJ 1,000 r

£ 700'-

m 500 r

Q! 400 r

(_ 300 -

ffl 200 r

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PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

79
05075000 RED LAKE RIVER AT HIGH LANDING NEAR GOODRIDGE, MM--

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

1.00

31.3

57.9

71.9

96.7

132

171

227

301

414

494

546

598

667

741

816

903

992

1,080

Feb.

0.76

28.2

52.6

65.8

97.5

130

173

219

313

405

478

533

592

661

729

796

862

936

1,090

March

1.60

40.5

69.0

100

127

161

202

246

318

384

464

547

626

698

770

842

913

1,010

1,180

April

29.2

56.3

80.1

102

139

185

238

314

400

492

590

682

775

869

963

1,120

1,290

1,530

1,890

May

19.3

40.1

57.6

74.9

92.7

124

229

307

400

515

621

720

818

958

1,100

1,230

1,360

1,480

1,800

June

8.00

29.7

60.7

85.2

111

178

261

346

438

582

716

837

923

1,000

1,080

1,150

1,290

1,450

1,620

July

11.6

35.8

65.2

89.6

113

146

187

243

340

457

599

673

746

822

905

988

1,070

1,240

1,490

Aug.

8.17

27.2

62.9

85.2

102

127

172

247

326

404

483

563

646

731

820

910

1,020

1,140

1,270

Sept.

3.42

20.0

54.4

69.3

93.8

142

200

281

350

418

491

568

666

780

875

964

1,050

1,200

1,390

Oct.

6.86

29.0

59.4

73.7

109

144

184

236

290

346

416

507

617

766

887

993

1,100

1,270

1,450
05075000 RED LAKE RIVER AT HIGH LANDING NEAR 

GOODRIDGE, MN-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

Recurrence

probability

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum

instantaneous

ng

194

314

535

1,280

2,580

3,470

4,560

5,310

6,000

6,630

7,390

3-day period

40.5

139

247

459

1,200

2,400

3,140

3,930

4,410

4,810

5,140

ng

7-day period

33.7

119

214

402

1,070

2,170

2,850

3,590

4,040

4,400

4,710

ng

15-day period

25.0

94.6

1 75

337

928

1,910

2,510

3,140

3,520

3,820

4,070

ng

30-day period

20.4

76.9

142

277

782

1,660

2,230

2,860

3,250

3,580

3,850

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (ffVs)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 0

0.10 10 0

0.20 5 hO.O

0.50 2 108

3 7

0 0

0 1.76

'13.0 17.8

'125 161

14

0

2.47

23.5

'180

30 60

0 0

6.34 '8.50

32.8 '41.0

191 '205

90

1.12

'll.O

'51.0

'240

120 183

3.80 7.63

14.8 21.2

52.9 61.3

274 288

1 Graphical interpretation.

81
05075000 RED LAKE RIVER AT HIGH LANDING NEAR 

GOODRIDGE, MN-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurrence

exceedance interval

probability (years)

14 30 14 30

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

0.184

11.4

53.5

305

0.306

13.6

58.2

310

0.438

15.6

62.3

315

0.569

17.3

65.8

323

March-April-May

0.072 0.204

5,

31,

213

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0

3.33

27.8

235

0.199

3.40

^0.0

273

0.539

4.65

32.2

309

3.01

13.0

55.0

348

0

4.

29.

181

,92 9.04

,5 39.9

233

0.500

12.8

47.7

246

2.23

14.6

59.9

319

September-October-November

0.020

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253

0.395

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Uo.o

! 263

3.43

13.4

49.0

280

'Graphical interpretation.

82
05075000 RED LAKE RIVER AT HIGH LANDING NEAR 

GOODRIDGE, (UN-Continued

Annual peak discharge and corresponding gage height 

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ftS/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(fl3/s)

Annual peak discharge, by year, and corresponding gage height

1930

1931

1932

1933

1934

1935

1936

1937

1938

1939

1940

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

AprilS

April 3

April 9

April 18

May 3

April 13

April 17

July 15

May 13

April 21

April 19

June 15

April 2

AprilS

April 11

March 27

March 30

June 15

April 20

April 13

May 11

April 29

May 19

June 9

June 23

AprilS

April 20

June 28

October 17

April 3

April 6

April 20

June 1 1

4.08

2.38

3.45

3.84

1.60

2.68

3.80

5.08

7.18

7.44

6.22

--

7.81

7.22

9.20

7.91

7.67

8.30

9.20

5.70

13.42

10.24

8.76

5.12

5.31

8.04

10.29

9.91

7.95

5.42

7.45

2.92

12.10

912

254

241

85.0

58.0

111

248

285

1,460

1,300

1,300

912

1,800

2,010

1,320

2,540

2,310

2,660

3,390

1,360

3,720

2,170

1,730

670

742

1,240

1,330

1,960

1,520

326

530

282

3,060

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

AprilS

October 24

April 13

April 3

March 30

July 18

April 10

June 16

AprilS

May 29

September 25

April 28

July 7

October 25

May 19

AprilS

April 25

AprilS

June 29

April 15

October 12

June 9

August 1 8

April 29

May 26

April 4

April 14

March 13

July 13

April 21

July 26

July 8

8.31

7.32

11.42

12.68

10.84

11.98

10.49

9.90

10.54

8.75

7.93

11.07

13.39

8.56

5.31

11.93

12.30

9.05

5.71

10.37

8.54

10.03

11.61

10.82

6.48

7.75

7.55

5.65

5.32

--

10.74

10.66

1,600

1,170

2,740

3,340

2,480

2,770

2,320

2,120

1,610

1,580

1,290

2,670

4,060

1,890

667

2,440

3,660

1,500

577

1,800

1,510

2,210

2,490

2,470

961

600

600

150

154

390

1,860

2,020

Annual peak discharge, from highest to lowest, and corresponding gage height

1975

1950

1979

1948

1966

1962

1968

1965

1974

July 7

May 11

April 25

April 20

April 3

June 11

July 18

April 13

April 28

13.39

13.42

12.30

9.20

12.68

12.10

11.98

11.42

11.07

4,060

3,720

3,660

3,390

3,340

3,060

2,770

2,740

2,670

1947

1945

1985

1967

1986

1978

1969

1946

1984

June 15

March 27

August 18

March 30

April 29

AprilS

April 10

March 30

June 9

8.30

7.91

11.61

10.84

10.82

11.93

10.49

7.67

10.03

2,660

2,540

2,490

2,480

2,470

2,440

2,320

2,310

2,210

83
05075000 RED LAKE RIVER AT HIGH LANDING NEAR 

GOODRIDGE, MN-Continued

Annual peak discharge and corresponding gage height-Continued

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft8*)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(tf/s)

Annual peak discharge, from highest to lowest, and corresponding gage height Continued

1951

1970

1994

1943

1957

1976

1993

1942

1982

1952

1971

1963

1972

1958

1983

1980

1938

1949

1956

1944

1939

1940

1973

1955

April 29

June 16

July8

AprilS

June 28

October 25

July 26

April 2

April 15

May 19

AprilS

AprilS

May 29

October 1 7

October 12

April 5

May 13

April 13

April 20

April 1 1

April 21

April 19

September 25

AprilS

10.24

9.90

10.66

7.22

9.91

8.56

10.74

7.81

10.37

8.76

10.54

8.31

8.75

7.95

8.54

9.05

7.18

5.70

10.29

9.20

7.44

6.22

7.93

8.04

2,170

2,120

2,020

2,010

1,960

1,890

1,860

1,800

1,800

1,730

1,610

1,600

1,580

1,520

1,510

1,500

1,460

1,360

1,330

1,320

1,300

1,300

1,290

1,240

1964

1987

1930

1941

1954

1977

1953

1988

1989

1981

1960

1992

1959

1937

1961

1931

1936

1932

1991

1990

1935

1933

1934

October 24

May 26

April 5

June 15

June 23

May 19

June 9

April 4

April 14

June 29

April 6

April 21

April 3

July 15

April 20

April 3

April 17

April 9

July 13

March 13

April 13

April 18

May 3

7.32

6.48

4.08

-

5.31

5.31

5.12

7.75

7.55

5.71

7.45

-

5.42

5.08

2.92

2.38

3.80

3.45

5.32

5.65

2.68

3.84

1.60

1,170

961

912

912

742

667

670

600

600

577

530

390

326

285

282

254

248

241

154

150

111

85.0

58.0

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05076000 THIEF RIVER NEAR THIEF RIVER FALLS, MN

LOCATION.--Lat 48°11 '08", long 96°10' 11", in NW1 /4SW1 /4 sec.3, T. 154 N., R.43 W., Marshall County, 

Hydrologic Unit 09020304, on right bank, 0.2 mi upstream from highway bridge, 5 mi north of Thief 

River Falls, 7 mi upstream from mouth, and 9 mi downstream from Mud Lake National Wildlife 

Refuge.

DRAINAGE AREA.-959 mi2 .

PERIOD OF RECORD.-July 1909 to September 1917, April 1920 to September 1921, October 1922 to 

September 1924, October 1928 to September 1981, March 1982 to current year. Monthly discharge 

only for some periods, annual maximums for water years 1919, 1922, 1925, 1926, published in 

WSP 1308. October 1981 to February 1982, operated as a high-flow partial-record station.

GAGE.--Water-stage recorder and control of grouted boulders. Datum of gage is 1,112.33 ft above mean 

sea level (levels by Minnesota Department of Transportation). Prior to May 4, 1939, nonrecording 

gages as same site and datum.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 5,610 ft3/s, May 13, 1950, gage height, 

17.38 ft; no flow at times.

Annual mean discharge

1.UUU

Q

O 800

HI

CO

cc

HI

Q.

tl 600

HI

LL

O

m

13

O

Z 400

Hi"

O

CC

X

0

CO 200

Q

n

I I I I I 1

-

-

-

I I I I I || I

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I I

l.li.il

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-

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-

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-

~

-

1 I. I § i

OlAOlAOlAO 

f-f-CVJCVJCOCO-<t

87
05076000 THIEF RIVER NEAR THIEF RIVER FALLS, MN-Continued

Statistics of monthly and annual mean discharges 

[m, more than 1 year of occurrence]

Maximum

Month «J*y

October 637

November 844

December 206

January 100

February 45.0

March 608

April 2,830

May 4,270

June 1,770

July 2,100

August 1,010

September 1,010

Annual 607

i r\f\r\ i . . _ j 1 ,LnJU . I '9'

700 j500 r

400 -

300 -

i 200 r

O :

LU 100 r

W 70 r

S %'r

0_ 40 -

,_ 30 -

LU ori " LU 20 r

u_ :

£ 10 ^ m -

ra 7 r

0 5 r

z 4 r

"I 3 -

w

0 2 r

cc :

I 1 r

8 0.7 h

Q 0.5 r

" 0.4 -

0.3 r

0.2 r

0.1 : L-^

2 5

Water year 

of 

occurrence

1986

1972

1945

1910

1910

1983

1966

1950

1962

1975

1993

1993

1966

, i ,,,,,,

, ,,!,,,,,,

10

Minimum Mean

_. . Water year _, . Standard Coeffi- Percentage Discharge .' Discharge . . A . . ., . . , m3/ \ ° m3/ \ deviation cientof of annual 

(n/s) occurrence (n /s) (ft3/s) variation discharge

0 m 86.6 151 1.74 4.43

0 m 62.8 126 2.00 3.21

0 m 19.1 42.1 2.20 0.98

0 m 5.55 14.9 2.69 0.28

0 m 3.50 8.76 2.50 0.18

0 m 67.4 123 1.82 3.45

7.75 1981 573 564 0.98 29.3

1.83 1990 454 653 1.44 23.2

0.032 1980 282 376 1.33 14.4

0 m 208 343 1.64 10.7

0 m 94.5 200 2.12 4.83

0 m 99.3 200 2.02 5.08

1.28 1939 162 149 0.92 100

Annual flow duration

^

-

-

-

 ~

 -

.;

* -E

-

 1

'.

 J

.

 ~

J

-

-

9 

'

-

 -:

 ~

. -

1 1 1 i i i i i , , , , i . . i , i i i i , i . . , , i , , . , i i , , , i , , , i , i

20 30 40 50 60 70 80 90 95 98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

88
05076000 THIEF RIVER NEAR THIEF RIVER FALLS, MM-Continue

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0

0

0.07

0.09

0.20

0.44

0.99

1.30

2.20

2.90

5.67

17.8

38.8

Feb.

0

0

0

0

0

0

0

0

0

0

0.09

0.20

0.46

0.80

1.10

2.40

3.61

9.76

30.1

March

0

0

0

0

0

0

0.09

0.19

0.40

0.58

0.85

1.80

3.07

5.92

10.3

23.1

58.2

145

495

April

1.30

5.42

14.5

23.8

39.2

59.1

87.4

125

181

240

323

423

543

699

868

1,030

1,260

1,610

2,350

May

2.76

5.92

12.3

22.7

33.6

47.8

66.3

91.9

126

170

228

296

376

476

602

111

1,000

1,320

1,830

June

0.25

0.72

2.10

5.10

12.1

20.0

27.6

39.0

58.1

85.5

122

160

204

264

350

482

658

863

1,350

July

0

0.08

0.52

1.10

3.42

7.14

10.6

17.0

24.6

33.9

46.8

67.0

102

164

240

342

481

651

987

Aug.

0

0

0

0.09

0.29

0.42

0.89

1.90

3.95

6.11

10.4

16.8

23.1

32.2

52.5

86.0

162

310

575

Sept.

0

0

0

0.04

0.16

0.45

0.91

1.30

2.82

4.39

8.07

15.4

24.9

39.2

67.5

116

218

337

600

Oct.

0

0

0

0

0.10

0.40

1.20

2.10

4.29

6.70

9.99

15.9

27.4

45.6

83.2

143

212

335

474
05076000 THIEF RIVER NEAR THIEF RIVER FALLS, MN-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft'/s)

_ . Recurrence Exceedance , »« ,

-« «» ££

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 

(ft3*)

ng

259

400

647

1,420

2,620

3,400

4,310

4,910

5,450

5,930

6,490

3-day period 7-day period 15-day period 30-day period

28.2 23.7

120 99.3

231 191

459 381

1,250 1,080

2,410 2,190

3,010 2,830

3,560 3,470

3,840 3,820

4,040 4,090

4,180 4,290

ng ng

15.8

67.8

133

276

853

1,920

2,630

3,410

3,900

4,310

4,650

ng

9.76

44.2

89.6

192

638

1,550

2,200

2,960

3,470

3,910

4,280

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 0

0.10 10 0

0.20 5 0

0.50 2 0

3 7

0 0

0 0

0 0

0 0

14 30 60

000

000

000

0 0 0.037

90

0

0

0

0.163

120 183

0 0

0 0

0 0.082

0.761 4.64

90
05076000 THIEF RIVER NEAR THIEF RIVER FALLS, (UN-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.011

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0

0

0

0.873 1.55

0

0

0

2.52

0

0

0.182

5.91

0

0

0

0.017

7 14 30

March-April-May

0

0

0

0.108

0

0

0

0.215

0

0

0.175

4.80

September-October-November

0

0

0

0.360

0

0

0

0.566

0

0

0

0.999

0

0

0

2.61

91
05076000 THIEF RIVER NEAR THIEF RIVER FALLS, MN--Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/*)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1909

1910

1911

1912

1913

1914

1915

1916

1917

1919

1920

1921

1922

1923

1924

1925

1926

1929

1930

1931

1932

1933

1934

1935

1936

1937

1938

1939

1940

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

July 19

April 3

April 26

September 30

April 7

June 11

June 30

April 23

April 1 1

July 10

AprilS

April 6

May 12

April 21

April 21

June 1 1

June 25

March 18

May 12

April 15

AprilS

April 18

April 7

April 13

April 19

August 3

May 19

April 27

April 15

June 12

May 2

AprilS

June 6

April 1 1

April 6

June 1 1

April 19

June 1

May 13

May 2

AprilS

June 2

10.60

9.05

5.40

5.60

14.00

7.42

10.66

14.50

12.72

16.30

-

--

11.90

8.40

5.30

9.10

--

13.71

7.26

-

9.25

6.35

5.67

-

~

9.75

9.00

4.82

7.85

7.82

9.69

9.43

7.15

10.24

8.77

9.84

10.67

10.00

17.38

9.81

10.72

6.37

1,970

1,440

127

164

1,530

795

1,920

4,080

2,600

5,040

1,780

1,700

2,680

1,160

145

1,420

1,660

1,870

776

39.0

1,340

470

150

318

890

1,160

1,130

35.0

728

822

1,480

1,060

666

1,650

1,170

1,560

1,850

1,620

5,610

1,630

1,500

429

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

April 12

AprilS

April 21

September 3

October 17

AprilS

April 6

March 24

June 10

Aprils

August 2

April 12

April 3

April 21

July 18

April 13

June 17

April 9

April 18

September 29

April 21

July 2

April 1

May 19

April 18

April 24

April 7

June 28

May 4

March 7

June 9

June 28

May 1

March 26

April 4

April 16

April 1

May 23

April 22

August 3 1

July 9

7.61

10.72

10.57

9.97

7.67

8.48

12.11

7.49

12.68

11.43

12.05

14.99

15.66

13.26

10.84

13.55

12.72

11.40

11.73

7.86

13.37

14.17

12.75

6.35

12.57

14.11

10.45

7.08

11.27

14.19

9.80

11.27

11.82

13.23

10.37

14.31

6.11

6.07

--

-

11.38

624

958

1,840

1,630

828

950

1,100

441

2,800

2,180

2,480

4,110

3,320

3,100

1,950

3,190

2,820

1,780

2,340

871

3,160

3,260

1,350

403

2,740

3,590

1,710

620

2,130

1,500

1,520

2,130

2,420

1,570

1,170

2,300

150

314

1,220

2,180

1,960

92
05076000 THIEF RIVER NEAR THIEF RIVER FALLS, MN-Continued

Annual peak discharge and corresponding gage height-Continued

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(tf/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, from highest to lowest, and corresponding gage height

1950

1919

1965

1916

1979

1966

1975

1969

1974

1967

1970

1962

1978

1922

1917

1964

1986

1972

1989

1963

1993

1982

1985

1909

1994

1968

1915

1929

1948

1956

1920

1971

1980

1921

1926

1945

1951

1957

1949

1987

1947

1913

May 13

July 10

April 12

April 23

April 24

April 3

July 2

April 13

April 21

April 21

June 17

June 10

April 18

May 12

April 11

August 2

May 1

April 18

April 16

AprilS

August 3 1

May 4

June 28

July 19

July 9

July 18

June 30

March 18

April 19

April 21

AprilS

April 9

April 7

April 6

June 25

April 11

May 2

September 3

June 1

March 26

June 11

April 7

17.38

16.30

14.99

14.50

14.11

15.66

14.17

13.55

13.37

13.26

12.72

12.68

12.57

11.90

12.72

12.05

11.82

11.73

14.31

11.43

--

11.27

11.27

10.60

11.38

10.84

10.66

13.71

10.67

10.57

~

11.40

10.45

-

-

10.24

9.81

9.97

10.00

13.23

9.84

14.00

5,610

5,040

4,110

4,080

3,590

3,320

3,260

3,190

3,160

3,100

2,820

2,800

2,740

2,680

2,600

2,480

2,420

2,340

2,300

2,180

2,180

2,130

2,130

1,970

1,960

1,950

1,920

1,870

1,850

1,840

1,780

1,780

1,710

1,700

1,660

1,650

1,630

1,630

1,620

1,570

1,560

1,530

1984

1952

1983

1942

1910

1925

1976

1932

1992

1946

1988

1923

1937

1938

1960

1943

1955

1959

1936

1973

1958

1941

1914

1930

1940

1944

1954

1981

1933

1961

1953

1977

1935

1991

1912

1934

1990

1924

1911

1931

1939

June 9

AprilS

March 7

May 2

April 3

June 1 1

April 1

AprilS

April 22

April 6

April 4

April 21

August 3

May 19

April 6

AprilS

AprilS

April5

April 19

September 29

October 17

June 12

June 1 1

May 12

April 15

June 6

April 12

June 28

April 18

March 24

June 2

May 19

April 13

May 23

September 30

April 7

April 1

April 21

April 26

April 15

April 27

9.80

10.72

14.19

9.69

9.05

9.10

12.75

9.25

-

8.77

10.37

8.40

9.75

9.00

12.11

9.43

10.72

8.48

--

7.86

7.67

7.82

7.42

7.26

7.85

7.15

7.61

7.08

6.35

7.49

6.37

6.35

--

6.07

5.60

5.67

6.11

5.30

5.40

--

4.82

1,520

1,500

1,500

1,480

1,440

1,420

1,350

1,340

1,220

1,170

1,170

1,160

1,160

1,130

1,100

1,060

958

950

890

871

828

822

795

776

728

666

624

620

470

441

429

403

318

314

164

150

150

145

127

39.0

35.0

93
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05076000 THIEF RIVER NEAR THIEF RIVER FALLS, MN~Continue

Monthly and annual mean discharges, in cubic feet per second-Continued

[Data were not rounded in accordance with U.S. Geological Survey publication standards; --, no data]

Year

1986

1987

1988

1989

1990

1991

1992

1993

1994

Oct.

636.6

3.52

2.78

1.26

0

0

3.98

161.1

232.8

Nov.

213.0

2.13

1.55

1.89

0

41.3

5.51

18.3

136.5

Dec.

46.2

0.354

0.739

0.245

0.021

0.789

2.81

5.05

10.7

Jan.

7.74

0.005

0.162

0.196

0

0

2.55

1.64

4.44

Feb.

2.96

0

0.027

0.176

0

0

2.89

0.996

0.023

March

319.7

316.7

9.94

1.17

22.3

13.7

116.4

71.9

138.3

April

1,367

112.9

244.9

726.9

14.5

10.2

636.6

639.7

90.4

May

1,248

325.7

18.9

227.9

1.83

21.7

412.0

89.8

94.0

June

248.5

69.8

31.6

161.0

11.9

3.95

57.8

171.0

77.9

July

28.4

109.3

0.444

85.0

2.79

21.2

61.0

710.7

913.8
05076500 RED LAKE RIVER AT THIEF RIVER FALLS, MN

LOCATION.--Lat 48°06'40", long 96°10'50", in sec.33, T.154 N., R.43 W., at Thief River Falls,

Pennington County, Hydrologic Unit 09020303, 0.3 mi downstream from Thief River Falls dam and 

1 mi downstream from Thief River.

DRAINAGE AREA.--3,450 mi2, approximately.

PERIOD OF RECORD.-July 1909 to September 1918, April 1920 to September 1930 (operated as 

continuous-record station). October 1918 to September 1919 (peak flow and gage height only).

GAGE.-Staff gage. Datum of gage is 1,093.6 ft above mean sea level, datum of 1929. Prior to Aug. 19, 

1920, staff gage at site 100 ft upstream at same datum.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 8,000 ft3/s, Apr. 16, 1916, gage height, 

15.0 ft, backwater from ice; no flow at times due to regulation.

Annual mean discharge

1.OUU

1,400 

Q

O

uj 1,200 

CO

cc

LLI

£ 1,000

LLI 

LLI

5 800 

0

ISCHARGE, IIN

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n

I I I I I

-

-

-

-

I I I I I I

I I I I I I I I I I I I I I I

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in

a>

oo co

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97
DISCHARGE, IN CUBIC FEET PER SECOND

TJ

m 

DO 

O

m 

-n

m

m

m 

x

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05076500 RED LAKE RIVER AT THIEF RIVER FALLS, MN-Continu

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

4.00

56.7

77.4

86.1

108

119

125

130

142

174

212

232

281

311

339

366

395

426

0.05

Feb.

4.00

42.8

49.4

76.8

91.2

98.5

104

109

143

211

266

290

318

355

370

386

401

435

0.05

March

7.95

45.1

70.1

78.4

100

135

161

187

224

264

304

389

426

473

568

644

789

1,650

2,320

April

112

203

326

367

400

443

500

588

692

792

933

1,100

1,300

1,520

1,750

2,030

2,340

2,790

3,930

May

180

307

352

395

432

469

518

570

632

695

756

816

882

957

1,030

1,180

1,410

2,440

3,470

June

169

266

319

366

415

463

512

555

589

622

658

731

809

902

1,020

1,220

1,580

2,020

2,520

July

76.2

169

206

226

247

269

298

326

357

388

419

472

531

653

765

865

1,010

1,180

1,460

Aug.

42.5

90.1

121

144

162

177

192

209

227

245

265

286

323

399

489

592

707

847

1,060

Sept.

29.5

79.3

100

123

155

181

205

220

235

250

277

307

354

423

501

567

785

940

0.49

Oct.

41.2

147

180

197

209

221

245

282

312

343

375

409

450

493

548

631

750

826

1,000
05076500 RED LAKE RIVER AT THIEF RIVER FALLS, MN-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

_ . Recurrence Exceedance . . . 

. ..... interval probability , . K * (years)

0.99

0.95

0.90

0.80

0.50

0.20

0.10

0.04

0.02

0.01

0.005

0.002

1.01

1.05

1.11

1.25

2

5

10

25

50

100

200

500

Maximum 

instantaneous

561

998

1,330

1,840

3,240

5,280

6,630

8,280

9,450

10,600

11,600

13,000

3-day period

331

667

934

1,360

2,520

4,150

5,150

6,280

7,030

7,700

8,310

ng

7-day period

312

573

777

1,100

2,040

3,520

4,560

5,890

6,880

7,850

8,820

ng

15-day period

248

448

605

861

1,630

2,930

3,920

5,270

6,330

7,430

8,570

ng

30-day period

205

360

482

679

1,280

2,330

3,150

4,300

5,230

6,220

7,270

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (f^/s)

Number of consecutive days

Non- Recurexceed- rence 

ance interprob- val 

ability (years)

0.05 20

0.10 10

0.20 5

0.50 2

1

0

3.93

10.2

39.1

3 7

3.21 7.46

7.52 15.1

18.5 31.8

70.9 98.7

14

10.6

20.0

39.5

114

30 60

12.4 14.5

24.6 30.5

50.3 64.6

142 178

90

17.3

35.6

73.9

198

120 183

20.5 34.5

42.3 62.6

87.3 115

225 265

100
05076500 RED LAKE RIVER AT THIEF RIVER FALLS, MN«Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

8.20

16.0

33.1

104

12.1

23.8

48.7

143

12.8

26.0

54.4

160

13.9

28.7

60.5

176

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0

12.1

24.9

83.1

13.8

31.6

73.3

230

33.4

56.1

98.5

237

50.1

75.9

120

260

7.50

14.6

31.2

115

7 14 30

March-April-May

15.5

28.0

54.2

164

18.1

33.5

65.8

194

24.4

51.3

111

340

September-October-November

2.86

7.03

18.2

74.2

15.2

37.6

88.2

232

21.0

46.9

102

265

41.7

73.7

133

306

101
05076500 RED LAKE RIVER AT THIEF RIVER FALLS, MM--Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

years

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft^s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft'/s)

Annual peak discharge, by year, and corresponding gage height

1910

1911

1912

1913

1914

1915

1916

1917

1918

1919

1920

March 24

June 9

September 24

April 7

June 11

June 29

April 16

April 10

March 26

July 4

April 16

8.70

10.00

6.30

--

6.30

8.40

15.00

10.70

5.90

12.70

9.20

3,220

4,550

1,080

3,820

1,230

2,880

8,000

5,270

995

7,600

3,700

1921

1922

1923

1924

1925

1926

1927

1928

1929

1930

AprilS

April 13

April 21

April 20

June 9

June 22

April 12

April 6

March 18

May 13

8.80

9.70

9.80

5.70

9.00

8.10

11.40

8.10

11.80

7.45

3,300

4,200

4,300

895

3,500

2,640

6,080

2,640

4,200

2,020-

Annual peak discharge, from highest to lowest, and corresponding gage height

1916

1919

1927

1917

1911

1923

1922

1929

1913

1920

1925

April 16

July 4

April 12

April 10

June 9

April 21

April 13

March 18

April 7

April 16

June 9

15.00

12.70

11.40

10.70

10.00

9.80

9.70

11.80

9.40

9.20

9.00

8,000

7,600

6,080

5,270

4,550

4,300

4,200

4,200

3,820

3,700

3,500

1921

1910

1915

1926

1928

1930

1914

1912

1918

1924

AprilS

March 24

June 29

June 22

April 6

May 13

June 1 1

September 24

March 26

April 20

8.80

8.70

8.40

8.10

8.10

7.45

6.30

6.30

5.90

5.70

3,300

3,220

2,880

2,640

2,640

2,020

1,230

1,080

995

895

102
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103
05077500 CLEARWATER RIVER NEAR LEONARD, MN

LOCATION.--Lat 47°44'00", long 95°13'00", in ESW^ sec. 12, T.149 N., R.36 W., Clearwater 

County, Hydrologic Unit 09020305, 300 ft downstream from dam at outlet of Clearwater Lake and 

8 mi northeast of Leonard.

DRAINAGE AREA.--153 mi2 .

PERIOD OF RECORD.-July 1934 to September 1947.

GAGE. Staff gage. Datum of gage is 1,261.80 ft above mean sea level, adjustment of 1912 (levels by 

U.S. Army Corps of Engineers). Prior to Sept. 10, 1934, at site 400 ft downstream at different datum.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 655 ft3/s, Apr. 21, 1947, gage height, 

3.19 ft; minimum daily discharge, 2 ft3/s, Mar. 25 to Apr. 3, 1940, estimated leakage through stop logs.

Annual mean discharge

2UU

180

0

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£ 140 

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O) O) O) O) O) O) w w O) O)

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104
05077500 CLEARWATER RIVER NEAR LEONARD, MN-Continued

Statistics of monthly and annual mean discharges

Maximum Minimum Mean

niMi..M. Water year niMK__ Water year niMl%__ Standard Coeffi-

* s' occurrence * s' occurrence * s' (ft3/s) variation

October 87.4 1947 20.3 1941 48.2 27.3 0.57

November 82.7 1945 25.5 1935 44.8 18.1 0.40

December 63.6 1945 24.4 1935 37.6 11.4 0.30

January 47.9 1946 19.9 1940 33.1 7.66 0.23

February 48.9 1945 16.9 1937 30.7 8.71 0.28

March 178 1945 12.4 1937 55.1 50.7 0.92

April 363 1947 57.1 1938 142 81.7 0.58

May 236 1947 53.5 1935 119 54.4 0.46

June 219 1943 25.7 1936 85.9 54.5 0.63

July 81.5 1944 15.1 1936 43.4 19.2 0.44

August 114 1944 6.09 1936 41.5 28.9 0.70

September 118 1944 9.53 1934 52.3 34.5 0.66

Annual 102 1947 36.9 1936 61.8 22.5 0.36

1,000 

700

0 500

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o

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III 50 

0 An CC 40

0 30

D 20

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Annual flow duration

-

-

-

- 

I 

r * _

: '" ..

 .

i , i i i i i i , , , , , , , , , i , , , i i , , , , i . . , , i , , , , i , , , , i , , , , i , , , , i i.i i

I 5 10 20 30 40 50 60 70 80 90 95

Percentage

of annual

discharge

6.57

6.11

5.13

4.51

4.19

7.52

19.4

16.2

11.7

5.91

5.66

7.13

100

-

-

-

-

_

_

.

_

-

-

98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

105
05077500 CLEARWATER RIVER NEAR LEONARD, MN-Continue

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

19.0

26.3

27.3

27.9

29.1

29.7

30.3

31.1

31.5

31.8

32.4

33.1

33.8

35.6

38.0

39.6

43.6

47.9

48.7

Feb.

15.1

18.5

22.0

25.7

27.5

28.3

28.7

29.3

30.0

30.8

31.4

31.9

33.3

35.1

36.6

37.7

39.2

43.6

31.5

March

12.7

16.4

23.8

25.3

26.7

28.2

29.8

31.5

33.2

35.0

36.8

38.4

40.1

41.7

43.9

48.4

59.5

86.0

235

April

39.9

50.3

59.5

67.6

73.9

80.2

86.5

92.7

100

108

119

129

143

159

188

203

218

264

378

May

44.4

54.2

62.4

66.3

70.8

79.9

84.9

90.1

96.1

102

108

115

122

132

142

153

169

206

272

June

25.8

31.7

35.7

39.3

43.1

46.3

50.7

55.8

59.7

65.4

74.9

82.1

87.7

97.8

114

125

136

162

226

July

14.6

19.6

24.3

26.0

27.2

28.7

30.9

33.0

34.8

37.6

42.5

44.8

47.5

50.8

55.8

62.0

68.4

80.3

93.6

Aug.

5.20

8.64

13.2

17.3

19.8

23.3

25.2

27.6

31.2

36.5

38.8

41.2

44.4

49.2

55.4

60.5

64.5

74.7

120

Sept.

8.30

16.2

17.4

18.5

20.3

23.5

27.2

36.4

40.5

43.9

46.6

49.3

54.7

64.8

71.9

84.7

98.3

115

125

Oct.

17.2

18.7

20.0

22.1

25.3

26.2

27.9

32.4

34.6

38.6

45.7

51.4

58.3

63.0

71.5

78.3

84.8

91.6

102
05077500 CLEARWATER RIVER NEAR LEONARD, MN-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

Recurrence

probability JJ^J1

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum

instantaneous 3-day period 7-day period 15-day period 30-day period 

(ft3/*)

67.7

104

130

168

266

408

503

622

709

795

880

992

65.1

99.9

124

161

256

395

490

610

699

788

877

ng

63.8

95.8

118

152

240

371

462

581

670

761

852

ng

58.3

85.1

104

132

205

317

396

500

580

662

747

ng

63.3

81.5

94.2

113

165

251

318

413

493

580

676

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (f^/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 1.66

0.10 10 3.03

0.20 5 5.80

0.50 2 16.2

3 7

1.86 4.12

3.32 6.37

6.20 10.2

16.7 20.8

14 30

5.98 7.59

8.83 10.9

13.3 15.8

24.1 26.9

60

11.3

14.4

18.8

28.5

90

14.8

17.4

21.0

29.2

120 183

16.6 19.0

19.0 21.7

22.5 25.7

30.8 35.7

107
05077500 CLEARWATER RIVER NEAR LEONARD, MN-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

10.0

13.0

17.1

26.2

12.1

14.8

18.6

26.7

13.8

16.4

19.8

27.4

17.4

19.8

22.8

29.5

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

4.96

7.67

12.2

24.7

5.70

8.56

13.2

25.9

6.29

9.47

14.6

28.2

8.07

11.8

17.6

32.6

3.76

6.85

12.5

27.6

7 14 30

March-April-May

4.25

7.90

1 4.4

30.4

9.97

13.4

18.4

>33.5

14.3

17.4

22.3

37.2

September-October-November

6.90

9.40

13.4

25.3

8.65

11.5

1 5.9

28.1

9.04

12.0

16.6

29.4

10.5

13.6

18.4

31.8

'Graphical interpretation.

108
05077500 CLEARWATER RIVER NEAR LEONARD, MN-Continued

Annual peak discharge and corresponding gage height

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft'/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft'/s)

Annual peak discharge, by year, and corresponding gage height

1935

1936

1937

1938

1939

1940

1941

May 15

April 19

September 3

May 11

April 5

April 16

April 15

1.49

2.06

1.96

2.43

1.56

2.22

2.06

100

275

236

347

115

266

237

1942

1943

1944

1945

1946

1947

April 1

AprilS

June 9

March 27

March 25

April 21

2.04

2.57

1.84

2.70

2.77

3.19

198

382

174

435

399

655

Annual peak discharge, from highest to lowest, and corresponding gage height

1947

1945

1946

1943

1938

1936

1940

April 21

March 27

March 25

AprilS

May 11

April 19

April 16

3.19

2.70

2.77

2.57

2.43

2.06

2.22

655

435

399

382

347

275

266

1941

1937

1942

1944

1939

1935

April 15

September 3

April 1

June 9

April 5

May 15

2.06

1.96

2.04

1.84

1.56

1.49

237

236

198

174

115

100

109
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(Da
05077700 RUFFY BROOK NEAR GONVICK, MN

LOCATION.--Lat 47°44'50", long 95°24'45", in SE 1 /4SE1 /4 sec.5, T.149 N., R.37 W., Clearwater

County, Hydrologic Unit 09020305, at culvert on County Highway 67, 4.0 mi upstream from mouth, 

and 4.8 mi east of Gonvick.

DRAINAGE AREA.--45.2 mi2 .

PERIOD OF RECORD.-April 1960 to current. April 1960 to September 1978, operated as a continuousrecord station. October 1978 to January 1986, operated as a high-flow partial-record station. February 

1986 to October 1986, operated as a continuous-record station. November 1986 to current, operated as 

a high-flow partial record station. Monthly and daily figures for Apr. 1, 1960, to June 30, 1960, 

published in WSP 1913.

GAGE. Nonrecording gage and crest-stage gage. Datum of gage is 1,227.93 ft, adjustment of 1912 

(levels by U.S. Army Corps of Engineers). Prior to Sept. 9, 1960, reference point at same site and 

datum.

EXTREMES FOR PERIOD OF RECORD.~Maximum discharge, 453 ft3/s, Mar. 30, 1967, gage height, 

6.35 ft; maximum gage height, 6.62 ft, Apr. 9, 1969, backwater from ice; no flow Feb. 20 to 

Mar. 6, 1968.

Annual mean discharge

ou 

Q

0 4° 

0 

LU 

W

cc

LU 

CL

LU 

LL

O

OQ 

0

2 20

LU

CD 

CC

O

w 10

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n

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5°

m

o >,

0 °

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m

X

O oo m °

m 

o 

m

o

(O

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JO

GO

DISCHARGE, IN CUBIC FEET PER SECOND

> PPPPP -» IOW*.01->JC

' IO W -t* Oi ->J -» IO W -t* Oi ->J O OOOOOC

1 1 1 1 | I | 1 | 1 | 1 M| 1 1 | 1 1 1 1 | I | 1 | 1 | 11. | I 1 | , , , , | , | , , , | II. | I I

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05077700 RUFFY BROOK NEAR GONVICK, MN-Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0.59

1.10

1.20

1.20

1.40

1.70

1.90

2.10

2.30

2.60

3.20

3.20

3.60

3.60

4.00

4.50

4.50

6.10

8.56

Feb.

0.66

0.76

0.99

1.10

1.30

1.30

1.50

1.70

2.20

2.20

2.50

2.90

3.30

3.30

3.80

3.80

4.40

5.00

6.60

March

0.93

1.20

1.50

1.90

1.90

2.50

2.50

2.50

3.20

3.20

3.20

4.48

4.86

5.44

6.07

9.15

21.3

34.7

52.0

April

4.60

6.81

8.55

13.4

17.9

21.1

24.2

27.9

31.4

36.9

42.5

51.8

61.4

71.3

82.2

98.0

113

138

173

May

3.30

5.30

6.64

7.65

8.83

10.5

12.6

14.7

16.7

18.6

20.4

23.6

26.9

30.6

35.2

40.7

47.4

63.0

97.0

June

1.50

2.20

2.50

3.00

3.50

4.20

4.90

6.34

7.17

7.90

9.70

11.3

13.5

16.3

20.9

27.8

35.7

46.9

64.5

July

1.00

1.50

1.80

1.80

2.20

2.20

2.60

2.60

3.20

3.20

3.80

3.80

4.60

5.91

6.82

7.58

8.87

14.0

28.0

Aug.

0.79

0.93

1.10

1.10

1.30

1.50

1.50

1.70

2.00

2.00

2.00

2.40

2.80

2.80

3.30

3.80

4.50

7.13

12.3

Sept.

0.54

0.81

1.20

1.20

1.50

1.80

1.80

1.80

2.20

2.20

2.20

2.70

2.70

3.30

4.00

5.60

7.34

11.2

24.0

Oct.

0.89

1.30

1.80

1.80

2.20

2.70

3.20

3.20

3.20

3.80

3.80

4.60

5.88

6.71

8.01

9.51

11.9

15.5

28.4
05077700 RUFFY BROOK NEAR GONVICK, MN-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft^s)

_ . Recurrence Exceedance . . .

" » ££

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 3-day period 7-day period 15-day period 30-day period 

(ft^s)

ng

62.6

81.5

110

187

296

367

454

515

574

630

702

22.5 21.3

47.2 43.2

66.8 59.8

97.5 84.7

177 144

276 210

329 242

383 271

416 287

442 299

464 308

ng ng

16.6

33.0

45.3

63.4

106

152

174

193

204

212

218

ng

10.2

22.1

31.4

45.1

76.7

108

121

132

136

140

142

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (ftVs)

Number of consecutive days

Non- Recurexceed- rence

ance Inter- 1

prob- val 

ability (years)

0.05 20 0

0.10 10 0.310

0.20 5 0.476

0.50 2 0.830

3

0

0.348

0.528

0.900

7 14 30 60

0 0 0.279 0.553

0.389 0.394 0.447 0.773

0.623 0.662 0.729 1.10

1.09 1.24 1.46 1.92

90

0.742

0.987

1.35

2.24

120 183

0.983 1.13

1.26 1.46

1.66 1.98

2.66 3.48

114
05077700 RUFFY BROOK NEAR GONVICK, MN-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (tt3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

0

0.109

0.779

1.83

0

0.408

0.783

1.85

0

0.414

0.802

1.91

0.391

0.585

0.921

1.99

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0.453

0.540

0.671

1.03

0.730

0.823

0.960

1.32

0.848

0.967

1.14

1.59

1.03

1.19

1.42

2.06

0

0.720

1.13

2.13

7 14 30

March-April-May

0

0.720

1.13

2.15

0.775

1.06

1.49

2.62

1.81

2.26

3.04

5.74

September-October-November

0.297

0.430

0.647

1.26

0.438

0.600

0.856

1.56

0.697

0.907

1.23

2.07

0.764

1.03

1.45

2.72

115
05077700 RUFFY BROOK NEAR GONVICK, MN--Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

April 17

April 20

July 7

May 28

April 16

April 13

April 2

March 30

June 10

April 9

April 29

AprilS

April 17

September 2

April 12

April 17

March 29

September 24

4.45

3.74

6.70

5.48

4.45

6.38

5.53

6.35

2.70

6.62

5.28

5.40

4.87

3.94

5.80

5.74

5.25

2.05

74.0

66.0

364

225

134

412

265

453

76.0

232

279

176

237

156

268

364

147

47.0

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

1995

April 7

April 20

April5

June 28

April 15

March 7

March 26

May 13

March 29

July 22

April 4

April5

June 20

July 3

March 7

March 29

July 19

March 13

5.67

4.94

3.36

--

4.59

4.81

4.03

4.91

4.61

6.05

5.20

4.44

--

2.29

3.25

3.74

2.85

6.10

357

284

137

150

249

175

195

281

190

395

165

178

30.0

66.0

98.0

169

112

200

Annual peak discharge, from highest to lowest, and corresponding gage height

1967

1965

1987

1962

1975

1978

1979

1985

1970

1974

1966

1982

1972

1969

1963

1995

1984

1986

March 30

April 13

July 22

July 7

April 17

April 7

April 20

May 13

April 29

April 12

April 2

April 15

April 17

April 9

May 28

March 13

March 26

March 29

6.35

6.38

6.05

6.70

5.74

5.67

4.94

4.91

5.28

5.80

5.53

4.59

4.87

6.62

5.48

6.10

4.03

4.61

453

412

395

364

364

357

284

281

279

268

265

249

237

232

225

200

195

190

1989

1971

1983

1993

1988

1973

1981

1976

1980

1964

1994

1992

1968

1960

1961

1991

1977

1990

Aprils

AprilS

March 7

March 29

April 4

September 2

June 28

March 29

AprilS

April 16

July 19

March 7

June 10

April 17

April 20

July 3

September 24

June 20

4.44

5.40

4.81

3.74

5.20

3.94

--

5.25

3.36

4.45

2.85

3.25

2.70

4.45

3.74

2.29

2.05

--

178

176

175

169

165

156

150

147

137

134

112

98.0

76.0

74.0

66.0

66.0

47.0

30.0

116
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05078000 CLEARWATER RIVER AT PLUMMER, MN

LOCATION.--Lat 47°55'24", long 96°02'46", in SE1 /4SW1 /4 sec.4, T.151 N., R.42 W., Red Lake County, 

Hydrologic Unit 09020305, on right bank 200 ft downstream from Soo Line Railroad bridge, 300 ft 

downstream from bridge on U.S. Highway 59, 0.9 mi northwest of railroad depot in Plummer, and 

8 mi upstream from Hill River.

DRAINAGE AREA.-512 mi2 .

PERIOD OF RECORD.-April 1939 to September 1979, March 1982 to current year. Annual maximums 

only, October 1979 to February 1982.

GAGE.--Water-stage recorder. Datum of gage is 1,098.57 ft above sea level (levels by U.S. Army Corps 

of Engineers). Prior to Nov. 10, 1939, nonrecording gage at site 100 ft upstream at same datum.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 3,940 ft3/s, Apr. 25, 1979, gage height, 

12.31 ft; maximum gage height, 12.37 ft, Apr. 18, 1979, backwater from ice; minimum daily 

discharge, 2.6 ft3/s, May 16, 1977, gage height, 1.71.

Annual mean discharge

ouu

I 400

UJ 

CO

cc 111

CL

UJ 

LL

O

m

O

Z 200

UJ

O 

CC

o

CO 100

Q

o c

I

I I I I I I I I I I I I

-

.

I I I I I I I I I I I

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o in o if 

r- r- eo o

O) O) O) C §

I

-

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I

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0) C

118
05078000 CLEARWATER RIVER AT PLUMMER, MN-Continued

Statistics of monthly and annual mean discharges

Maximum

Water vear 

» *u Discharge / Monin /«»3/ \ *** 

* occurrence

October 483 1972

November 503 1972

December 140 1978

January 90.1 1952

February 98.4 1974

March 351 1945

April 1,390 1966

May 1,970 1950

June 1,140 1962

July 844 1975

August 507 1985

September 666 1973

Annual 354 1950

1 nnn i . , , r- . , , , ,

I ,UUU i i | .... | i . i i . i

700 - 9

Q 500 -

§ 400 - 

O 

UJ 300 - 9

S 200 -

LU 

U_

0 70 -

z :

IU~ 50 -

o An - CC 40 -

Q 30-

co

° 20 -

10 ' ' ' i '' i I i i i i i i i

2 5 10

Minimum

_. . Water year Discharge .'

(ft3/s) of 

v ' occurrence

21.5 1941

23.8 1991

24.4 1990

18.4 1940

19.0 1940

22.8 1940

26.8 1977

7.52 1977

30.1 1991

16.0 1940

13.3 1940

14.1 1940

57.0 1990

Discharge 

(ft3/s)

113

91.0

63.3

50.7

47.0

109

516

347

254

206

123

106

170

Mean

Standard Coeffi- Percentage 

deviation cient of of annual 

(ft3/s) variation discharge

95.8 0.85 5.59

71.2 0.78 4.49

25.6 0.40 3.12

17.2 0.34 2.50

16.9 0.36 2.32

89.6 0.82 5.39

347 0.67 25.5

321 0.93 17.1

228 0.90 12.5

182 0.88 10.2

107 0.87 6.05

101 0.95 5.25

70.7 0.42 100

Annual flow duration

. . i . . i . i i i i . i . . i , i . i .

 .

, , i , , , , i , , . , i , , , , i , , ,

20 30 40 50

' ' .

, i , , , i i , , ,

60 70

i i i . i . i i i i | . .

-

_

-

-

-

. 9 :

*

, i , , , , i , , , i ,

80 90 95 98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

119
05078000 CLEARWATER RIVER AT PLUMMER, MN--Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

25.0

29.1

32.2

35.1

37.5

39.9

42.4

44.7

46.6

49.0

52.3

54.6

56.5

59.1

62.3

66.8

72.1

76.5

83.6

Feb.

25.7

28.5

30.3

32.1

33.6

35.3

38.1

40.2

43.2

45.5

47.4

49.1

50.9

53.8

57.5

62.9

69.0

73.0

78.9

March

26.8

30.7

33.4

35.6

38.7

42.8

45.6

48.4

51.4

54.7

58.0

63.2

69.7

80.1

92.9

104

155

211

464

April

33.3

53.4

73.7

91.9

123

159

198

231

278

334

393

453

531

626

121

828

987

1,240

1,710

May

34.4

57.6

77.8

97.2

115

134

155

174

194

220

249

284

330

380

435

512

618

773

1,050

June

33.4

44.7

56.5

70.9

85.6

98.7

110

122

134

148

167

189

216

257

309

369

446

541

787

July

28.7

42.2

51.7

59.8

67.8

76.3

85.6

95.5

106

119

136

158

181

208

245

293

347

435

634

Aug.

22.1

29.3

35.8

40.9

44.9

49.0

53.5

58.8

65.0

73.3

84.1

98.5

112

128

144

166

204

273

399

Sept.

20.7

28.5

33.8

38.9

44.1

50.0

55.3

61.4

67.7

74.3

81.6

88.9

96.1

104

115

136

176

233

313

Oct.

26.5

34.2

40.4

43.6

46.8

49.7

53.2

58.5

66.1

72.2

77.6

92.7

109

127

147

167

190

239

315
05078000 CLEARWATER RIVER AT PLUMMER, MN-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

_ . Recurrence Exceedance . . . 

. ..,.». interval probab,l,ty (years)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 3-day period 7-day period 15-day period 30-day period 

(ft3/s)

311

484

611

806

1,360

2,250

2,920

3,840

4,570

5,340

6,140

7,280

313 286

461 410

567 498

731 634

1,200 1,020

1,980 1,660

2,580 2,160

3,440 2,880

4,140 3,470

4,900 4,120

5,720 4,820

ng ng

227

328

400

510

817

1,320

1,700

2,240

2,670

3,140

3,640

ng

169

251

309

397

637

1,010

1,290

1,660

1,950

2,250

2,570

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (ft^s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 7.08

0.10 10 10.0

0.20 5 14.6

0.50 2 26.3

3

8.03

11.4

16.6

29.0

7 14 30 60

9.19 11.0 13.7 19.5

13.2 15.3 18.3 23.4

19.2 21.4 24.8 28.7

32.7 34.9 38.6 40.7

90

23.1

27.3

32.9

45.3

120 183

26.0 29.8

30.6 35.4

36.8 43.5

50.7 63.7

121
05078000 CLEARWATER RIVER AT PLUMMER, MN-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

16.1

19.8

24.9

37.3

19.8

23.1

27.7

38.7

21.3

24.6

29.2

40.1

23.1

26.6

31.5

42.7

7 14 30

March-April-May

8.46 11.1

12.7

19.6

37.1

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

10.9

14.9

21.3

39.3

14.5

18.8

25.5

44.6

17.6

22.1

29.0

49.5

22.0

27.6

36.8

64.7

12.3

15.8

21.2

36.8

16.6

25.1

44.9

13.5

19.2

27.7

47.8

17.9

24.4

35.1

67.7

September-October-November

15.8

19.8

26.0

43.0

17.6

22.2

29.2

48.0

20.9

26.4

34.8

57.3

122
05078000 CLEARWATER RIVER AT PLUMMER, MN-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/*)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

<ft3/s)

Annual peak discharge, by year, and corresponding gage height

1939

1940

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

April 27

April 16

June 8

April 3

April 21

August 10

March 28

March 23

June 1 1

April 25

June 1

May 6

May 3

April 15

July 5

April 13

April 6

April 21

June 27

July 6

April 6

April 7

April 25

June 9

April 4

April 17

April 12

April 3

-

6.98

6.57

6.12

6.43

8.12

6.76

8.09

8.34

6.80

9.08

11.33

7.22

8.10

6.23

8.52

9.64

9.58

11.84

6.08

6.37

8.18

4.88

11.90

7.54

8.57

11.88

10.73

380

840

756

722

800

1,160

952

1,030

1,420

929

1,870

3,630

1,110

1,440

834

1,640

1,800

2,240

3,570

822

702

710

461

3,640

966

1,640

3,620

2,000

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

April 3

June 18

April 1 1

April 26

April 10

April 16

September 6

April 22

July 4

April 1

September 27

April 13

April 25

AprilS

June 29

April 16

March 7

June 9

August 19

May 1

July 27

April 7

April 15

June 22

July 7

August 26

July 28

July 9

10.19

11.00

11.89

9.48

8.32

10.33

7.98

10.31

11.19

8.86

4.85

11.40

12.31

6.57

7.37

8.71

10.17

9.07

8.59

8.03

7.62

8.22

9.34

4.67

5.39

6.60

7.20

9.22

2,470

3,000

3,630

2,080

1,520

2,550

1,270

2,540

2,960

1,250

429

3,270

3,940

898

1,150

1,700

1,200

1,880

1,650

1,430

1,290

900

1,200

393

565

776

954

1,440

Annual peak discharge, from highest to lowest, and corresponding gage height

1979

1962

1950

1969

1965

1957

1978

1968

1975

1972

1974

1967

1956

1970

April 25

June 9

May 6

April 1 1

April 12

June 27

April 13

June 18

July 4

April 16

April 22

April 3

April 21

April 26

12.31

11.90

11.33

11.89

11.88

11.84

11.40

11.00

11.19

10.33

10.31

10.19

9.58

9.48

3,940

3,640

3,630

3,630

3,620

3,570

3,270

3,000

2,960

2,550

2,540

2,470

2,240

2,080

1966

1984

1949

1955

1982

1985

1954

1964

1971

1952

1994

1986

1947

1987

April 3

June 9

June 1

April 6

April 16

August 19

April 13

April 17

April 10

April 15

July 9

May 1

June 1 1

July 27

10.73

9.07

9.08

9.64

8.71

8.59

8.52

8.57

8.32

8.10

9.22

8.03

8.34

7.62

2,000

1,880

1,870

1,800

1,700

1,650

1,640

,640

,520

,440

,440

,430

,420

,290

123
05078000 CLEARWATER RIVER AT PLUMMER, MN-Continued

Annual peak discharge and corresponding gage height-Continued

[--, no data]

Water 

year

Gage Peak 

Date height discharge 

(feet) (ftVs) year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ftVs)

Annual peak discharge, from highest to lowest, and corresponding gage height Continued

1973

1976

1983

1989

1944

1981

1951

1946

1963

1993

1945

1948

1988

1980

September 6 7.98

April 1

March

8.86

7 10.17

April 15 9.34

August 10 8.12

June 29 7.37

May 3 7.22

March 23 8.09

April 4

July 28

7.54

7.20

March 28 6.76

April 25 6.80

April 7

AprilS

8.22

6.57

,270 1940

,250 1953

,200 1958

,200 1943

,160 1992

,150 1941

1,110 1942

1,030 1960

966 1959

954 1991

952 1961

929 1977

900 1990

898 1939

April 16

July5

July 6

April 21

August 26

JuneS

April 3

April 7

April 6

July 7

April 25

September 27

June 22

April 27

6.98

6.23

6.08

6.43

6.60

6.57

6.12

8.18

6.37

5.39

4.88

4.85

4.67

--

840

834

822

800

776

756

722

710

702

565

461

429

393

380

124
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05078230 LOST RIVER AT OKLEE, MN

LOCATION.-Lat 47°50'35", long 95°51 '30", in SE^NE^ sec.2, T.150 N., R.41 W., Red Lake County, 

Hydrologic Unit 09020305, on downstream side of bridge on State Highway 222 at northwest edge of 

Oklee, 12 mi upstream from mouth.

DRAINAGE AREA.--266 mi2 .

PERIOD OF RECORD.-April 1960 to September 1981, February 1982 to current year. Monthly and 

daily figures for April 1960, to June 1960, published in WSP 2113.

GAGE. Water-stage recorder. Datum of gage is 1,126.94 ft above sea level, adjustment of 1912 (levels by 

U.S. Army Corps of Engineers). Prior to Sept. 9, 1960, reference points at same site at datum 8.00 ft 

higher. Sept. 9, 1960, to Sept. 30, 1964, nonrecording gage at same site at datum 8.00 ft higher. 

Oct. 1, 1964, to Sept. 30, 1981, and Feb. 24,1982, to Sept. 6,1989, nonrecording gage at same site and 

datum.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 3,210 ft3/s, Apr. 11, 1969, gage height, 

14.91 ft; maximum gage height, 16.72 ft, May 24, 1962; no flow at times.

EXTREMES OUTSIDE PERIOD OF RECORD.-Maximum stage known since at least 1897, 18.39 ft, 

present datum, Apr. 21, 1950, from floodmarks.

Annual mean discharge

<:uu

180

Q

z

O 1 60

O

LU

£«o

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Q.

LJJ 120

LJJ i-°°

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Z 80

LJJ

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127
05078230 LOST RIVER AT OKLEE, MN-Continued

Statistics of monthly and annual mean discharges

Maximum

_. . Water year M~ »u Discharge ' Monin /*t3/ \ 

* ' occurrence

October 470 1972

November 232 1972

December 56.6 1978

January 19.8 1986

February 25.8 1984

March 242 1986

April 745 1966

May 622 1962

June 657 1962

July 442 1962

August 351 1985

September 330 1973

Annual 177 1962

1,000 : i i | i i i i | i i i i M i

700 |-

500 r

400 -

300 - 

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O : *

[i3 100 r »

W 70 r

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2 5 10

Minimum

_. . Water year Discharge /

(ft3/s) of 

v ' occurrence

1.02 1991

1.11 1977

0.050 1977

0.002 1977

0 1977

0.190 1964

29.5 1991

10.5 1980

8.20 1980

1.99 1961

1.17 1961

0 1990

18.2 1990

Mean

n. . Standard CoefflD'S;?6 deviation cientof 

(n IS) (ft3/s) variation

45.1 83.8 1.86

29.9 40.2 1.35

13.4 11.3 0.85

7.94 5.72 0.72

7.65 5.92 0.77

71.0 66.5 0.94

293 234 0.80

127 120 0.94

87.8 115 1.31

78.4 104 1.33

40.9 75.6 1.85

37.4 62.1 1.66

69.7 39.9 0.57

Percentage 

of annual 

discharge

5.37

3.56

1.59

0.95

0.91

8.46

34.9

15.1

10.5

9.34

4.87

4.45

100

Annual flow duration

,,.,,,,,,,,,,,.,,,,,,,

 .

 .

*

20 30 40 50 60

i i i | , , , i | i i i , | , , i |

9

*

^

,

70 80 90 95

j

-

-

-

-

-_

-_

_:

-

-

J

.

J

-j

-

-

:

-i

-.

-f

-

-

:

98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

128
05078230 LOST RIVER AT OKLEE, MN-Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0.19

0.50

1.70

2.20

2.20

2.80

4.10

4.98

6.04

7.56

8.53

9.47

10.3

11.1

12.6

13.6

14.6

16.5

18.9

Feb.

0

0.18

0.46

1.70

2.60

2.60

3.70

5.89

6.93

8.02

8.29

8.55

8.82

9.94

10.7

11.5

14.6

15.9

17.8

March

0.09

1.60

3.23

6.14

7.81

8.82

9.83

11.3

13.0

15.2

18.4

22.2

28.8

41.6

62.3

94.1

134

200

318

April

22.6

29.1

37.0

47.1

58.0

75.0

92.0

106

122

141

166

199

236

285

353

435

514

705

1,200

May

10.6

17.4

22.0

27.7

32.9

38.4

45.4

54.5

65.4

76.1

85.5

95.0

110

129

153

181

220

280

441

June

5.64

7.70

11.4

14.0

16.6

19.6

23.6

28.1

32.9

37.2

42.8

51.8

64.2

78.5

98.1

118

148

201

355

July

2.30

3.96

5.10

6.24

8.89

11.7

14.6

17.4

20.2

23.1

27.7

32.8

39.1

48.5

62.0

84.6

127

200

370

Aug.

0.40

0.83

1.20

1.70

3.60

4.17

5.48

6.67

8.79

11.4

13.8

16.4

19.9

23.7

29.1

36.3

50.7

84.1

150

Sept.

0.23

0.71

1.60

2.90

4.16

5.36

7.04

8.85

10.9

13.3

15.6

18.3

21.5

25.5

30.8

38.8

57.1

93.7

158

Oct.

1.30

1.80

3.36

4.28

6.62

7.95

10.0

11.9

15.5

18.1

20.3

22.5

25.9

32.1

40.0

50.5

65.9

95.7

166
05078230 LOST RIVER AT OKLEE, MN-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(f^/s)

_ . Recurrence

!f Ka,T interval probability , . (years)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 3-day period 7-day period 15-day period 30-day period

124

258

371

562

1,150

2,120

2,810

3,710

4,370

5,020

5,650

6,470

103 90.4

207 170

293 234

436 339

878 656

1,630 1,200

2,180 1,600

2,920 2,150

3,470 2,580

4,030 3,020

4,590 3,470

ng ng

63.8

120

165

238

460

835

1,110

1,490

1,780

2,070

2,370

ng

48.8

88.4

120

170

321

576

765

1,020

1,220

1,430

1,640

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (f^/s)

Number of consecutive days

Non- Recurexceed- rence 

ance inter- 1 

prob- val 

ability (years)

0.05 20 0

0.10 10 0

0.20 5 0.171

0.50 2 1.31

3

0

0

0.206

1.51

7 14 30 60

000 0.102

0 0 0.032 0.385

0.282 0.408 0.558 1.12

1.85 2.44 3.48 4.59

90

0.278

0.855

2.10

6.68

120 183

0.592 1.27

1.35 2.32

3.11 4.51

9.70 13.1

130
05078230 LOST RIVER AT OKLEE, MN-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

0

0.080

1. 00

4.9 1

0

0.078

1.04

5.18

0 0.063

0.082 0.303

1.07 ^.lO

5.27 ! 5.40

June-July-August

0.05

0.10

0.20

0.50

20

10

5

2

0.052

0.164

0.466

2.33

0.238

0.442

0.910

3.31

0.483 1.5 1

0.800 2.14

1.46 3.33

4.47 8.28

0

0.155

1.25

5.53

7 14 30

March-April-May

0

0.435

1.63

7.32

0.047

h.oo

^.00

! 15.0

2.01

4.44

10.0

31.4

September-October-November

0.054

0.200

0.615

3.22

0.082

0.307

0.940

4.64

0.226

0.678

1.72

6.56

0.517

1.28

2.83

9.29

Graphical interpretation.

131
05078230 LOST RIVER AT OKLEE, MN-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1950

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

April 21

April 23

May 24

June 4

April 16

April 12

April 2

March 3 1

July 17

April 1 1

April 25

AprilS

April 15

September 4

August 15

April 19

March 3 1

July 3

18.39

! 4.34

! 8.72

'5.13

! 6.07

11.12

12.60

14.17

7.35

14.91

12.76

12.34

13.98

11.27

12.91

14.66

11.70

9.40

2,790

279

1,490

355

472

1,780

2,240

2,880

551

3,210

2,300

1,430

2,070

1,030

2,270

2,120

920

855

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

April 9

April 20

April 3

September 8

April 16

March 7

June 9

August 1 8

March 30

July 24

April 4

April 6

June 2 1

September 10

March 9

March 30

JulyS

16.64

14.63

9.95

12.98

12.04

13.29

9.13

15.03

13.50

9.00

9.68

13.57

5.89

6.60

12.33

12.47

--

3,140

2,140

670

1,560

1,320

520

626

2,320

1,720

661

620

940

134

247

500

1,000

1,270

Annual peak discharge, from highest to lowest, and corresponding gage height

1969

1978

1967

1950

1985

1970

1974

1966

1979

1975

1972

1965

1986

1981

1962

1971

1982

1994

April 11

April 9

March 31

April 21

August 1 8

April 25

August 15

April 2

April 20

April 19

April 15

April 12

March 30

September 8

May 24

AprilS

April 16

JulyS

14.91

16.64

14.17

18.39

15.03

12.76

12.91

12.60

14.63

14.66

13.98

11.12

13.50

12.98

! 8.72

12.34

12.04

-

3,210

3,140

2,880

2,790

2,320

2,300

2,270

2,240

2,140

2,120

2,070

,780

,720

,560

,490

,430

,320

,270

1973

1993

1989

1976

1977

1980

1987

1984

1988

1968

1983

1992

1964

1963

1961

1991

1990

September 4

March 30

April 6

March 3 1

July 3

April 3

July 24

June 9

April 4

July 17

March 7

March 9

April 16

June 4

April 23

September 10

June 2 1

11.27

12.47

13.57

11.70

9.40

9.95

9.00

9.13

9.68

7.35

13.29

12.33

'6.07

! 5.13

U.34

6.60

5.89

1,030

1,000

940

920

855

670

661

626

620

551

520

500

472

355

279

247

134

! Gage height recorded using datum 8 feet higher.

132
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05078500 CLEARWATER RIVER AT RED LAKE FALLS, MN

LOCATION.--Lat 47°53'15", long 96°16'25", in NW^NE^ sec.22, T.151 N., R.44 W., Red Lake 

County, Hydrologic Unit 09020305, on left bank 40 ft downstream from Great Northern Railroad 

bridge in Red Lake Falls, 1 .4 mi upstream from mouth, and 3 mi downstream from Badger Creek.

DRAINAGE AREA.-- 1,3 70 mi2, approximately.

PERIOD OF RECORD.-June 1909 to September 1917, October 1934 to September 1981, March 1982 to 

current year. Annual maximum only for October 1918 to September 1919. Monthly discharge only 

for October, November, 1934, published in WSP 1308. October 1981 to February 1982, operated as a 

high-flow partial-record station.

GAGE.-- Water-stage recorder. Datum of gage is 948.94 ft above sea level (levels by U.S. Army Corps of 

Engineers). Prior to Sept. 12, 1911, nonrecording gage at site 0.5 mi upstream, and Sept. 12, 1911, to 

Sept. 30, 1917, nonrecording gage at site 40 ft upstream at different datum.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 10,300 ft3/s, Apr. 25, 1979, gage 

height, 12.38 ft; maximum gage height, 15.85 ft, Mar. 6, 1983, highwater mark, backwater from ice; 

no flow at times.

1,000

O 800

O ill CO

cc 111

CL

111

LLJ

u_

o 

m

o

600

400

111 

O 

CC

CO 200 

Q

Annual mean discharge

\ i i i i i i i i i i i i i i i i i I i i i r

i i i i i i i i

*~ *~ CM CM oo oo

O) O) O) O) O) O)

134
05078500 CLEARWATER RIVER AT RED LAKE FALLS, MN-Continued

Statistics of monthly and annual mean discharges

Month Dl®°h7*

October 1,350

November 1,230

December 260

January 220

February 1 50

March 993

April 3,460

May 5,060

June 3,040

July 1,670

August 1,690

September 1,270

Annual 855

10 (TOO i i \j,\j\j\j

7,000

5,000

4,000

Z 3,000

O 2,000 LU

W

rr

LU 1,000

QL

t- 700

LU

LU 500

" 400 om 30°

^

O 200

z

g 100

5 70

Q 50 

W 40

0 30

20

j-

'-

-

-

_

_

-

I

;

-

-

'

'-

i

-

-

10 2

Maximum

rge ^V-r 

' occurrence

1972

1972

1910

1910

1984

1946

1966

1950

1962

1994

1985

1973

1950

i , 1.1,1111111

1 ,,,,!,,,,,,,

5 10

Minimum Mean

_. . Water year _. . Standard Coeffi- Discharge / Discharge . . ., . . . /*»3/-\ of /*»3/-\ deviation cientof 

(ft/s) occurrence (ft /s) (ft3/s) variation

10.0 1935 178 210 1.18

19.0 1935 134 155 1.15

21.4 1937 85.6 49.1 0.57

21.4 1940 68.0 34.7 0.51

19.1 1937 62.8 29.3 0.47

13.6 1937 225 252 1.12

61.0 1981 1,120 870 0.78

32.2 1977 663 723 1.09

26.5 1980 481 508 1.06

8.34 1936 367 386 1.05

1.49 1936 204 279 1.36

2.92 1936 179 195 1.09

64.4 1939 311 174 0.56

Annual flow duration

...... 1 .. . . { . . i i 1 . i . . 1 i i . i 1 . i . , 1 . i i , | ... |

9

9

* 

* 9

 .

* .

, i , , , , i , , , , i , , . , i i , , , i , , , , i , , . , i , , , . i , , , i

20 30 40 50 60 70 80 90 95

Percentage 

of annual 

discharge

4.72

3.56

2.27

1.80

1.67

5.97

29.8

17.6

12.8

9.74

5.42

4.75

100

-_

-_

-

-

_

.

-

i

;

-

-

-

"

I

_

-_

^

-

-

1

98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

135
05078500 CLEARWATER RIVER AT RED LAKE FALLS, MN-Continue

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

27.8

31.8

36.9

39.9

42.4

45.8

49.0

51.4

56.4

62.5

67.5

73.5

78.0

82.3

86.5

90.6

97.5

107

126

Feb.

25.0

31.0

34.5

36.8

39.2

42.6

45.8

48.9

53.0

58.0

64.1

68.3

72.4

77.0

81.7

89.6

97.4

104

121

March

24.9

33.0

38.6

43.4

48.0

52.8

57.8

62.9

70.0

77.2

86.3

95.5

106

118

144

184

298

587

1,190

April

75.0

119

156

191

239

310

382

449

529

640

765

907

1,090

1,310

1,530

1,790

2,140

2,720

3,820

May

75.9

116

142

169

196

225

259

300

337

382

438

497

583

688

814

982

1,170

1,450

2,080

June

46.8

64.1

80.2

96.1

115

138

161

184

216

249

287

333

391

475

572

688

841

1,080

1,660

July

27.4

44.7

58.5

71.4

84.2

97.1

112

128

149

170

206

245

285

339

410

512

661

898

1,380

Aug.

21.9

32.8

40.7

49.5

58.2

66.5

74.7

83.6

93.0

102

114

130

147

169

195

231

298

448

835

Sept.

18.8

29.4

37.3

44.4

53.8

63.4

73.0

82.7

93.3

104

115

130

144

164

192

236

309

437

630

Oct.

25.0

36.0

44.5

51.5

57.6

65.3

74.9

83.2

91.2

102

113

127

141

166

201

244

303

393

576
05078500 CLEARWATER RIVER AT RED LAKE FALLS, MN-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

Recurrence 

xcee ance interval 

probability (years)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 3-day period

480

860

1,160

1,640

3,070

5,510

7,340

9,830

11,800

13,800

15,900

18,800

416

714

947

1,330

2,480

4,540

6,170

8,510

10,400

12,500

14,700

ng

7-day period 15-day period 30-day period

363

615

810

1,130

2,080

3,770

5,100

7,010

8,570

10,300

12,100

ng

270

472

629

882

1,640

2,960

3,970

5,380

6,510

7,700

8,960

ng

197

347

466

657

1,230

2,230

3,000

4,060

4,910

5,810

6,740

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (ft^s)

Number of consecutive days

Non- Recurexceed- rence 

ance inter- 1 

prob- val 

ability (years)

0.05 20 1.80

0.10 10 4.90

0.20 5 12.7

0.50 2 38.4

3

4.49

9.47

19.1

42.3

7 14

5.87 6.77

12.0 13.5

23.0 25.3

46.1 49.2

30 60

8.54 12.9

16.3 21.4

29.5 34.5

54.1 59.7

90

17.5

25.4

37.2

63.1

120 183

22.4 28.4

29.8 36.7

40.9 49.5

67.4 84.6

137
05078500 CLEARWATER RIVER AT RED LAKE FALLS, MN--Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

8.16

13.2

21.9

46.7

17.7

22.7

30.1

48.9

19.9

24.8

31.9

50.1

22.9

27.7

34.7

52.8

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

2.84

7.43

19.0

62.0

8.16

15.0

28.1

69.0

9.81

17.4

31.8

76.9

13.4

22.9

41.0

101

10.3

16.5

26.8

53.9

7 14 30

March-April-May

18.8

24.3

32.5

54.9

20.6

26.4

35.4

25.5

34.0

48.6

59.9 100

September-October-November

3.59

8.93

21.4

60.8

7.24

15.5

32.0

74.2

8.62

18.1

36.7 l

83.0 l

16.2

24.8

41.0

88.0

Graphical interpretation.

138
05078500 CLEARWATER RIVER AT RED LAKE FALLS, MN--Continued

Annual peak discharge and corresponding gage height 

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/*)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1910

1911

1912

1913

1914

1915

1916

1917

1919

1935

1936

1937

1938

1939

1940

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

March 22

June 9

September 29

AprilS

June 12

June 29

April 15

April 11

--

March 27

April 17

May 1

May 14

April 20

April 15

June 8

March 27

April 7

August 10

March 27

March 22

April 15

April 7

June 2

May 6

April 10

April 16

July5

April 14

Aprils

April 21

June 28

July 7

April 4

April 6

9.50

7.92

-

--

4.70

6.91

-

-

-

5.02

-

-

5.95

3.80

11.43

-

10.04

-

7.42

-

-

-

-

7.30

11.28

6.52

6.17

4.44

6.16

7.25

8.67

9.98

4.65

6.30

8.47

1,960

793

1,110

3,320

1,340

3,320

3,990

1,250

6,700

696

1,260

1,010

2,220

830

3,100

3,290

2,200

2,780

3,210

2,680

3,380

5,430

3,000

3,360

9,310

2,880

2,550

1,120

2,540

3,660

5,560

6,840

1,320

1,960

4,010

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

April 26

June 10

July 13

April 17

April 13

April 3

March 3 1

July 18

April 12

April 26

April 10

April 16

March 15

April 22

April 19

April3

JulyS

April 9

April 25

AprilS

September 8

April 15

June 13

June 9

August 19

April 30

May 27

April 7

April 7

June 22

September 16

August 25

March 30

JulyS

3.97

10.96

6.15

6.58

10.86

11.02

9.32

7.30

11.82

9.32

7.58

9.95

7.42

10.08

10.34

6.84

4.13

11.56

12.38

5.59

6.97

7.76

7.05

8.85

9.86

7.39

5.93

6.05

7.62

3.77

4.45

-

9.88

8.99

884

8,600

2,300

3,050

8,680

8,920

5,820

3,550

9,740

5,630

3,500

6,720

2,900

6,920

7,310

3,120

866

9,890

10,300

1,910

3,160

4,160

3,190

5,450

7,120

3,720

2,170

2,270

2,550

652

1,040

1,640

3,200

5,350

Annual peak discharge, from highest to lowest, and corresponding gage height

1979

1978

1969

1950

1966

1965

1962

April 25

April 9

April 12

May 6

April3

April 13

June 10

12.38

11.56

11.82

11.28

11.02

10.86

10.96

10,300

9,890

9,740

9,310

8,920

8,680

8,600

1975

1985

1974

1957

1919

1967

1970

April 19

August 19

April 22

June 28

March 3 1

April 26

10.34

9.86

10.08

9.98

--

9.32

9.32

7,310

7,120

6,920

6,840

6,700

5,820

5,630

139
05078500 CLEARWATER RIVER AT RED LAKE FALLS, MN-Continued

Annual peak discharge and corresponding gage height Continued

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft'/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, from highest to lowest, and corresponding gage height Continued

1956

1984

1947

1994

1982

1960

1916

1986

1955

1968

1971

1946

1949

1913

1915

1941

1944

1993

1983

1981

1976

1940

1964

1948

1973

1951

1943

April 21

June 9

April 15

JulyS

April 15

April 6

April 15

April 30

April 8

July 18

April 10

March 22

June 2

Aprils

June 29

June 8

August 10

March 30

June 13

September 8

April 3

April 15

April 17

April 7

March 15

April 10

April 7

8.67

8.85

-

8.99

7.76

8.47

-

7.39

7.25

7.30

7.58

--

7.30

-

6.91

--

7.42

9.88

7.05

6.97

6.84

11.43

6.58

-

7.42

6.52

-

5,560

5,450

5,430

5,350

4,160

4,010

3,990

3,720

3,660

3,550

3,500

3,380

3,360

3,320

3,320

3,290

3,210

3,200

3,190

3,160

3,120

3,100

3,050

3,000

2,900

2,880

2,780

1945

1952

1989

1954

1963

1988

1938

1942

1987

1910

1959

1992

1914

1958

1936

1917

1953

1912

1991

1937

1961

1977

1939

1911

1935

1990

March 27

April 16

April 7

April 14

July 13

April 7

May 14

March 27

May 27

March 22

April 4

August 25

June 12

July 7

April 17

April 1 1

JulyS

September 29

September 16

May 1

April 26

July 5

April 20

June 9

March 27

June 22

--

6.17

7.62

6.16

6.15

6.05

5.95

10.04

5.93

9.50

6.30

--

4.70

4.65

--

--

4.44

--

4.45

--

3.97

4.13

3.80

7.92

5.02

3.77

2,680

2,550

2,550

2,540

2,300

2,270

2,220

2,200

2,170

1,960

1,960

1,640

1,340

1,320

1,260

1,250

1,120

1,110

1,040

1,010

884

866

830

793

696

652

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05079000 RED LAKE RIVER AT CROOKSTON, MN

LOCATION.--Lat 47°46'32", long 96°36'33", in SW1 /4SW1 /4 sec.30, T.150 N., R.46 W., Polk County, 

Hydrologic Unit 09020303, on right bank 100 ft upstream from Sargent Street bridge in Crookston, 

0.3 mi downstream from Interstate Power Co.'s dam, 0.6 mi downstream from bridge on U.S. 

Highway 75, and 53 mi upstream from mouth.

DRAINAGE AREA.-5,280 mi2, approximately.

PERIOD OF RECORD. May 1901 to current year. Monthly discharge only for some periods, published 

in WSP 1308. Figures of daily discharge for Apr. 3-30, 1904, published in WSP 130, have been found 

unreliable and should not be used.

GAGE. Water-stage recorder. Datum of gage is 832.72 ft above sea level. May 18, 1901, to June 30, 

1909, nonrecording gage at bridge 300 ft upstream at same datum. July 1, 1909, to Sept. 25, 1911, 

nonrecording gage, Sept. 26, 1911, to Sept. 30, 1919, water-stage recorder, Oct. 1, 1919, to 

Sept. 30, 1930, nonrecording gage, at present site and datum.

EXTREMES FOR PERIOD OF RECORD.~Maximum discharge, 28,400 ft3/s, Apr. 12, 1969, gage

height, 27.33 ft; minimum daily discharge, 0.0 ft3/s, July 13, 1960, caused by regulation of powerplant 

upstream.

EXTREMES OUTSIDE PERIOD OF RECORD.-Flood of April 1897 reached a stage of 25.20 on 

April 11, discharge 18,900 ft3 /s.

5,000

O 4,000

O 

LU 

CO

DC

LU 

Q_

Annual mean discharge

3,000

LU 

U_

O

m 

o

Z 2,000

LU 

O 

DC 

<

O

CO 1,000

Q

i i i i i i i i i i i i i i i I i i i i i r

§

LO Q LO

00 (3) O)

00 00 00 00 O) O) O)

O LA O LA 

CT> O) O) O)

o m

O) O)

143
05079000 RED LAKE RIVER AT CROOKSTON, MN»Continued

Statistics of monthly and annual mean discharges

Maximum

> *L. Discharge 

Month <ft3/s)

October 2,840

November 3,170

December 1,900

January 1,500

February 1 ,460

March 3,630

April 10,300

May 15,300

June 7,200

July 6,850

August 3,870

September 3,010

Annual 3,130

10,000 : i i [ r7,000 r

5,000 - 

4,000 - 

i 3,000 -

O 2,000 - LLI : C/D

£ 1,000 -

a. :

1- 700 r 

LLI : 

LLI 500 r

CD

O 200 r 

Z ;

8 100 r

3 70 r

0 50 r 

CO 40 -

0 30 L

20 r

10 : . L-L2 5

Water year 

of 

occurrence

1972

1972

1904

1906

1951

1910

1966

1950

1962

1975

1985

1905

1950

i i i i i i 1 1 1 1 1

. , , i i i i , , 1 1

10

Minimum

Discharge , Discharge

(ft3/s) OT (ft3/s) 

occurrence

8.02 1937 805

10.1 1937 660

5.34 1937 547

15.6 1934 494

17.8 1937 470

24.9 1936 938

232 1981 2,920

154 1934 2,030

80.4 1934 1,640

26.2 1936 1,290

12.3 1934 815

8.87 1934 810

132 1935 1,110

Annual flow duration

 .

1 1 i i , . i i . i , i . , . , i . , i . i , , . . i . , .

20 30 40 50 60 70

Mean

Standard Coeffi- Percentage 

deviation cient of of annual 

(ft3/s) variation discharge

689 0.86 6.00

548 0.83 4.92

425 0.78 4.08

385 0.78 3.68

357 0.76 3.50

854 0.91 6.99

2,270 0.78 21.8

2,050 1.01 15.1

1,300 0.79 12.2

1,240 0.96 9.58

743 0.91 6.07

649 0.80 6.03

695 0.62 100

-_

 t \

}

t i i , i i i .iii, ,

80 90 95 98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

144
05079000 RED LAKE RIVER AT CROOKSTON, MN-Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

30.4

73.8

105

142

167

193

228

309

365

428

486

535

590

649

733

872

965

1,050

1,220

Feb.

31.8

72.2

97.5

127

158

184

223

311

380

429

467

513

565

626

699

807

921

1,020

1,100

March

60.9

118

148

187

238

318

387

446

506

569

640

736

860

948

1,040

1,180

1,410

2,060

3,530

April

241

363

487

634

780

932

1,100

1,320

1,610

1,870

2,180

2,530

2,960

3,500

4,090

4,670

5,520

6,800

9,260

May

211

288

408

540

664

762

893

1,030

1,160

1,300

1,450

1,680

1,940

2,290

2,770

3,300

3,830

4,530

5,670

June

125

212

311

412

533

655

775

915

1,050

1,210

1,390

1,570

1,780

1,990

2,260

2,550

2,970

3,550

4,550

July

52.2

133

205

278

356

456

568

699

808

910

1,040

1,160

1,290

1,420

1,630

1,890

2,280

2,830

3,890

Aug.

25.5

72.1

137

180

231

282

339

409

497

587

682

779

879

993

1,130

1,320

1,550

1,860

2,340

Sept.

24.0

76.8

119

184

240

297

374

481

558

643

760

874

985

1,090

1,190

1,340

1,510

1,750

2,120

Oct.

25.1

101

136

185

240

292

347

423

523

615

724

834

944

1,050

1,160

1,310

1,490

1,830

2,270
05079000 RED LAKE RIVER AT CROOKSTON, MN-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge

Recurrence

. ..... interval probability , .

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Historic adjustment applied.

Maximum

instantaneous 3-day period 7-day period 15-day period 30-day period 

(ft3/s)1

870

1,770

2,510

3,730

7,360

13,100

17,100

22,100

25,700

29,100

32,400

36,700

647

1,380

2,000

3,030

6,140

11,100

14,500

18,700

21,700

24,600

27,300

ng

528

1,150

1,670

2,550

5,210

9,430

12,300

15,800

18,300

20,700

22,900

ng

395

878

1,290

2,000

4,140

7,560

9,870

12,700

14,700

16,600

18,300

ng

319

690

1,010

1,540

3,190

5,890

7,780

10,200

11,900

13,500

15,100

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (ffVs)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 12.4

0.10 10 24.7

0.20 5 52.1

0.50 2 171

3

15.1

29.8

62.5

198

7 14

17.2 19.5

33.9 38.2

70.7 78.9

224 246

30 60

23.8 28.2

45.6 53.8

92.2 108

277 317

90

31.8

60.8

122

354

120 183

36.1 43.8

68.5 82.2

136 161

387 456

146
05079000 RED LAKE RIVER AT CROOKSTON, MN-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

23.6

46.0

94.7

291

25.7

50.8

105

323

27.6

53.7

110

332

30.7

58.8

118

350

34.2

61.1

116

330

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

18.3

38.0

84.2

300

26.1

52.4

112

369

31.5

62.9

133

424

41.4

80.0

163

501

16.7

32.9

68.6

219

7 14 30

March-April-May

46.7

79.9

144

374

52.4

89.2

160

409

84.6

139

239

579

September-October-November

23.2

47.1

100

317

26.0

53.3

114

364

30.9

63.6

137

440

147
05079000 RED LAKE RIVER AT CROOKSTON, MN-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

! 1897

1902

1904

1905

1906

1907

1908

1909

1910

1911

1912

1913

1914

1915

1916

1917

1918

1919

1920

1922

1923

1924

1925

1926

1927

1928

1929

1930

1931

1932

1933

1934

1935

1936

1937

1938

1939

1940

1941

1942

1943

1944

1945

1946

April 11

May 21

April 24

May 13

April 15

April 4

April 10

July 21

March 20

June 10

September 29

AprilS

June 12

June 29

April 17

April 11

April 2

July 5

March 25

May 13

April 20

April 23

June 9

March 24

April 13

AprilS

March 19

May 13

March 26

April 9

April 2

AprilS

March 27

April 18

August 4

May 10

April 24

April 16

June 9

March 28

AprilS

August 1 1

March 28

March 24

25.20

10.00

20.42

14.50

21.00

12.04

17.00

8.77

14.20

8.45

-

-

7.40

14.25

21.80

-

6.50

21.10

23.30

13.00

-

5.20

13.50

12.30

14.00

--

14.90

10.30

4.93

9.78

5.92

6.89

8.38

11.33

10.25

12.62

8.92

14.73

--

-

16.88

12.20

15.96

-

18,900

5,170

13,700

8,730

14,600

6,330

10,700

3,680

7,920

3,620

2,120

7,170

2,630

7,860

15,900

5,480

1,950

14,900

9,520

6,910

5,820

1,140

7,300

6,500

7,700

3,910

7,620

4,770

1,030

4,390

1,440

1,490

2,490

4,540

3,750

5,910

3,050

6,000

6,190

7,090

9,420

5,770

9,130

9,020

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

June 12

April 19

June 2

May 7

April 7

April 1 1

March 24

April 12

AprilS

April 20

June 29

July 7

AprilS

April 6

March 27

June 1 1

April 9

June 20

April 14

April 3

April 1

July 19

April 12

April 26

April 10

April 16

September 26

April 23

April 18

April 3

May 20

April 7

April 26

April 9

June 29

April 17

June 23

June 10

August 19

April 1

May 28

AprilS

April 17

June 23

18.08

-

17.43

25.70

19.00

12.65

8.01

11.37

18.30

19.78

18.10

8.62

11.72

12.56

5.67

21.90

13.25

11.74

23.51

24.41

23.49

17.17

27.33

19.05

20.74

20.28

10.86

22.89

21.97

19.45

8.66

23.11

24.99

12.31

13.56

16.12

13.98

20.71

16.38

19.47

11.22

10.90

16.11

4.60

12,400

9,520

10,700

27,400

12,600

6,320

2,560

5,330

12,400

14,000

11,800

3,370

5,630

5,520

1,450

16,700

6,820

5,550

19,400

21,500

19,300

11,100

28,400

13,300

15,300

14,700

4,960

16,400

15,600

12,500

3,440

18,100

21,900

6,600

7,120

9,320

7,330

14,400

9,580

11,500

5,360

5,090

8,800

916

148
05079000 RED LAKE RIVER AT CROOKSTON, MN-Continued

Annual peak discharge and corresponding gage height-Continued

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(fta/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height Continued

1991

1992

June 13

April 28

6.99

-

2,200

2,460

1993

1994

April 1

July 10

18.24

20.41

7,400

13,600

Annual peak discharge, from highest to lowest, and corresponding gage height

1969

1950

1979

1966

1965

1967

L 1897

1978

1962

1974

1916

1975

1971

1919

1972

1906

1984

1956

1904

1994

1970

1951

1976

1947

1955

1957

1986

1968

1908

1949

1985

1920

1948

1943

1982

1945

1946

1989

1905

1910

1915

April 12

May 7

April 26

April3

April 14

April 1

April 1 1

April 7

June 11

April 23

April 17

April 18

April 10

JulyS

April 16

April 15

June 10

April 20

April 24

July 10

April 26

April 7

April3

June 12

Aprils

June 29

April 1

July 19

April 10

June 2

August 19

March 25

April 19

Aprils

April 17

March 28

March 24

April 17

May 13

March 20

June 29

27.33

25.70

24.99

24.41

23.51

23.49

25.20

23.11

21.90

22.89

21.80

21.97

20.74

21.10

20.28

21.00

20.71

19.78

20.42

20.41

19.05

19.00

19.45

18.08

18.30

18.10

19.47

17.17

17.00

17.43

16.38

23.30

-

16.88

16.12

15.96

--

16.11

14.50

14.20

14.25

28,400

27,400

21,900

21,500

19,400

19,300

18,900

18,100

16,700

16,400

15,900

15,600

15,300

14,900

14,700

14,600

14,400

14,000

13,700

13,600

13,300

12,600

12,500

12,400

12,400

11,800

11,500

11,100

10,700

10,700

9,580

9,520

9,520

9,420

9,320

9,130

9,020

8,800

8,730

7,920

7,860

1927

1929

1993

1983

1925

1913

1981

1942

1922

1963

1980

1926

1907

1952

1941

1940

1938

1923

1944

1959

1964

1960

1917

1987

1954

1902

1988

1973

1930

1936

1932

1928

1937

1909

1911

1977

1958

1939

1914

1953

1935

April 13

March 19

April 1

June 23

June 9

AprilS

June 29

March 28

May 13

April 9

April 9

March 24

April 4

April 1 1

June 9

April 16

May 10

April 20

August 1 1

AprilS

June 20

April 6

April 1 1

May 28

April 12

May 21

AprilS

September 26

May 13

April 18

April 9

AprilS

August 4

July 21

June 10

May 20

July 7

April 24

June 12

March 24

March 27

14.00

14.90

18.24

13.98

13.50

13.56

--

13.00

13.25

12.31

12.30

12.04

12.65

-

14.73

12.62

--

12.20

11.72

11.74

12.56

-

11.22

11.37

10.00

10.90

10.86

10.30

11.33

9.78

--

10.25

8.77

8.45

8.66

8.62

8.92

7.40

8.01

8.38

7,700

7,620

7,400

7,330

7,300

7,170

7,120

7,090

6,910

6,820

6,600

6,500

6,330

6,320

6,190

6,000

5,910

5,820

5,770

5,630

5,550

5,520

5,480

5,360

5,330

5,170

5,090

4,960

4,770

4,540

4,390

3,910

3,750

3,680

3,620

3,440

3,370

3,050

2,630

2,560

2,490

149
05079000 RED LAKE RIVER AT CROOKSTON, MN-Continued

Annual peak discharge and corresponding gage height-Continued

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft'/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, from highest to lowest, and corresponding gage height Continued

1992

1991

1912

1918

1934

April 28

June 13

September 29

April 2

Aprils

-

6.99

-

6.50

6.89

2,460

2,200

2,120

1,950

1,490

1961

1933

1924

1931

1990

March 27

April 2

April 23

March 26

June 23

5.67

5.92

5.20

4.93

4.60

1,450

1,440

1,140

1,030

916

Reported by Professor E.F. Chandler.

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05079000 RED LAKE RIVER AT CROOKSTON, MN-Continued

Monthly and annual mean discharges, in cubic feet per second-Continued

[Data were not rounded in accordance with U.S. Geological Survey publication standards; --, no data]

Year

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

Oct.

932.5

2,836

1,114

2,301

1,580

1,966

279.6

628.5

613.1

1,138

186.2

1,768

2,193

1,385

803.4

2,416

852.3

226.6

137.9

115.7

95.6

170.6

532.9

1,226

Nov.

943.1

3,172

680.9

1,319

1,429

1,604

183.8

670.0

520.3

936.5

179.9

1,131

1,538

1,256

908.6

1,405

662.2

199.6

128.3

96.6

116.6

145.1

261.8

723.2

Dec.

790.0

1,055

658.2

985.8

915.1

1,092

194.8

731.9

503.9

1,201

138.2

965.5

1,305

1,022

1,030

1,048

806.5

170.8

139.4

78.0

104.0

146.4

594.4

729.4

Jan.

772.4

902.4

603.7

928.4

994.2

1,337

176.6

623.9

490.0

1,085

125.8

982.6

1,087

967.1

1,002

992.9

721.0

160.0

181.3

96.0

94.3

145.8

579.9

661.5

Feb.

860.5

921.7

606.8

1,007

906.8

1,238

181.0

622.1

506.2

1,038

150.2

914.3

956.8

1,039

941.4

953.9

694.6

160.0

152.3

103.3

91.7

145.7

593.4

600.2

March

983.2

2,290

1,695

1,003

934.2

1,602

276.6

693.2

556.6

1,070

237.3

992.9

2,576

1,787

2,117

2,345

1,919

506.7

152.7

248.9

184.5

1,002

896.9

1,298

April

2,995

5,409

554.7

6,856

6,064

3,409

429.1

7,509

7,678

2,658

231.8

4,540

2,384

2,463

1,900

5,623

880.3

1,416

3,546

415.5

236.7

1,381

2,638

1,141

May

1,428

2,976

615.9

5,755

4,697

1,340

366.0

1,798

4,489

808.7

236.8

3,456

1,510

1,166

2,728

4,336

1,305

235.4

876.8

221.3

353.7

919.2

988.7

1,234

June

1,169

1,601

407.4

2,755

2,509

1,149

224.6

1,289

2,613

642.7

887.5

1,712

2,613

3,498

2,942

1,777

728.5

187.7

537.5

448.9

251.9

242.6

1,479

1,815

July

792.3

939.1

244.1

1,621

6,851

915.5

384.1

1,360

2,322

384.9

1,349

2,007

1,973

1,346

3,013

1,301

837.5

147.9

337.4

179.8

635.5

521.7

2,453

4,375
05082500 RED RIVER OF THE NORTH AT GRAND FORKS, ND

LOCATION.-Lat 47°55'38", long 97°01'34", in sec.2, T.151 N., R.50 W., Grand Forks County,

Hydrologic Unit 09020301, on right bank 200 ft upstream from the DeMers Avenue bridge, 0.4 mi 

downstream from Red Lake River, and at mile 297.6.

DRAINAGE AREA.--30,100 mi2, approximately, including 3,800 mi2 in closed basins.

PERIOD OF RECORD.--April 1882 to current year. Prior to January 1904 monthly discharge only, 

published in WSP 1308.

GAGE.--Water-stage recorder. Datum of gage is 779.00 ft above sea level. Oct.l, 1983, to Sept. 30, 1986, 

datum of gage was 780.00 ft at same site. Apr. 14,1965, to Sept. 30,1983, water-stage recorder 1.9 mi 

downstream at a datum of 778.35 ft. Nov. 3, 1933, to Apr. 13,1965, water-stage recorder 0.3 mi 

upstream at 778.35 ft datum. See WSP 1728 or 1913 for history of changes prior to Nov. 3, 1933.

EXTREMES FOR PERIOD OF RECORD.«Maximum discharge, 85,000 ft3/s, Apr. 10, 1897, gage 

height, 50.20 ft; minimum daily discharge, 1.8 ft3/s, Sept. 2,1977, caused by unusual regulation 

during repair of dam at Grand Forks.

Annual mean discharge

B.UUU

7,000

Q

UJ 6,000

CO

DC

UJ

£ 5,000 

UJ

UJ

U_

^ 4000

m '

13

o

-. 3,000

UJ

CD

DC

X 2,000

O

CO

Q

1,000

n

III I II I I I I

_

.

_

-

-

.

_

-

_

-

-

~

|| II llllllllll

I I I I I I I I I I

_

.

_

-

-

.

_

-

.

-

-

I

o in o in

§

00 O) O)

GO GO GO O) O) O) O)

154
05082500 RED RIVER OF THE NORTH AT GRAND FORKS, ND-Continued

Statistics of monthly and annual mean discharges

Maximum

Month Discharge 

(ft3/s)

October 5,690

November 5,220

December 3,070

January 1,930

February 1,870

March 10,200

April 39,800

May 36,500

June 19,300

July 25,300

August 1 7,000

September 6,250

Annual 7,580

10,000 

7,000

0 5,000

z

O 4,000 

O 

$ 3,000

£ 2.000

tnHI

LL

55 1 '000

0 700

III 500 

CC 400

§ 300

CO

° 200 

100,

1

Water year 

of 

occurrence

1901

1972

1972

1951

1952

1966

1897

1950

1962

1975

1993

1993

1950

Minimum

Discharge Water/ear

(ft3/s) of 

occurrence

12.1 1937

30.5 1937

17.8 1937

18.8 1937

2.87 1937

42.1 1937

954 1938

373 1934

151 1934

88.8 1936

30.6 1934

20.3 1936

244 1934

Discharge 

(ft3/s)

1,380

1,210

967

795

758

2,120

9,270

5,080

3,890

3,190

1,760

1,410

2,630

Mean

Standard Coeffideviation cient of 

(ft3/s) variation

1,080 0.78

877 0.73

665 0.69

542 0.68

514 0.68

2,220 1.05

7,980 0.86

4,910 0.96

3,070 0.79

3,450 1.08

2,070 1.18

1,130 0.81

1,650 0.63

Percentage 

of annual 

discharge

4.33

3.79

3.04

2.50

2.38

6.66

29.1

16.0

12.2

10.0

5.53

4.42

100

Annual flow duration

-

-

_

-

-

-

r

_

-

> 5

, . .,....,.

. . .1 i .....

10

.. i ....,..,. i .... i ...

. . i . . . , i , , , , i , , , , i , , ,

20 30 40 50

. i . . . . i . . i

* 9

60 70

. i .... i , , , |

. i .... i . , . i

80 90 95

-

-

_

-

-

-

-

_

-

-

-

98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

155
05082500 RED RIVER OF THE NORTH AT GRAND FORKS, ND-Contin

Monthly and annual flow duration, in cubic feet per second 1

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

55.4

148

201

246

307

367

440

520

613

710

111

843

997

1,140

1,280

1,410

1,540

1,680

1,850

Feb.

59.2

156

207

247

320

379

438

508

606

662

718

792

876

998

1,160

1,390

1,510

1,630

1,800

March

209

312

403

530

608

686

783

883

1,010

1,140

1,300

1,490

1,680

1,870

2,050

2,530

3,420

5,600

9,870

April

1,000

1,340

1,660

1,970

2,300

2,710

3,180

3,800

4,400

5,090

5,920

7,060

8,550

10,000

12,200

15,400

1 8,600

23,000

30,400

May

742

1,050

1,330

1,570

1,790

2,020

2,270

2,540

2,850

3,190

3,540

3,980

4,500

5,160

6,140

7,030

8,090

9,670

14,400

June

447

755

985

1,210

1,450

1,680

1,900

2,140

2,430

2,780

3,170

3,600

4,040

4,580

5,170

5,820

6,790

8,070

10,900

July

219

399

586

728

888

1,110

1,330

1,550

1,790

2,110

2,380

2,650

3,010

3,400

3,890

4,510

5,360

6,810

10,000

Aug.

110

214

357

437

497

602

746

885

1,010

1,120

1,220

1,390

1,590

1,850

2,130

2,440

2,850

3,710

5,260

Sept.

63.7

203

336

436

489

542

715

842

977

1,120

1,250

1,360

1,480

1,660

1,870

2,150

2,490

3,140

4,270

Oct.

90.6

259

347

405

473

547

627

783

900

1,060

1,220

1,350

1,500

1,660

1,850

2,080

2,430

2,950

3,670

'Statistics computed using period of daily value record 1904 to current year.
05082500 RED RIVER OF THE NORTH AT GRAND FORKS, ND-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(tf/s)1

Recurrence

probability , . K * (years)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum

instantaneous 

(ft3/s)

1,640

3,260

4,640

6,990

14,700

29,200

41,000

58,000

71,900

86,700

102,000

125,000

3-day period

1,600

3,240

4,620

6,960

14,300

27,400

37,400

51,000

61,500

72,400

83,500

ng

7-day period

1,450

2,940

4,190

6,340

13,200

25,800

35,600

49,300

60,300

71,600

83,500

ng

15-day period

1,220

2,430

3,450

5,200

11,000

21,900

30,800

43,700

54,400

65,700

77,900

ng

30-day period

1,010

1,950

2,730

4,060

8,400

16,700

23,400

33,200

41,400

50,200

59,700

ng

Statistics computed using period of daily value record 1904 to current year.

Probability of occurrence of annual low discharges

Minimum mean discharge (f^/s)1

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 24.5

0.10 10 58.5

0.20 5 142

0.50 2 479

3 7

34.2 36.1

72.5 76.3

158 166

482 507

14

38.8

81.3

175

531

30 60

44.4 62.0

91.4 115

193 223

568 601

90

72.7

132

250

654

120 183

88.9 98.9

156 179

284 335

707 854

Statistics computed using period of daily value record 1904 to current year.

157
05082500 RED RIVER OF THE NORTH AT GRAND FORKS, ND-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)1

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

39.8

85.1

187

572

43.0

91.3

199

599

46.1

96.8

208

616

51.5

105

221

639

81.1

158

312

791

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

79.0

146

283

804

89.0

162

312

871

96.6

176

336

936 1,

114

206

392

090

34.2

79.9

189

620

7 14 30

March-April-May

106

192

354

841

143

233

393

875

229

361

598

1,380

September-October-November

56.4

114

237

685

62.4

126

261

755

74.9

150

310

874

'Statistics computed using period of daily value record 1904 to current year.

158
05082500 RED RIVER OF THE NORTH AT GRAND FORKS, ND-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1882

1883

1884

1885

1886

1887

1888

1889

1890

1891

1892

1893

1894

1895

1896

1897

1898

1899

1900

1901

1902

1903

1904

1905

1906

1907

1908

1909

1910

1911

1912

1913

1914

1915

1916

1917

1918

1919

1920

1921

1922

1923

1924

1925

1926

April 18

April 26

April 16

April 17

May 3

April 15

April 19

April 1

April 15

April 13

April 17

April 24

April 24

April 6

May 30

April 10

April 14

April 17

April 10

April 7

March 30

April 1 1

April 27

May 16

April 18

April 7

April 11

July 30

March 22

June 12

AprilS

AprilS

June 16

July 3

April 23

AprilS

March 28

July 8

March 3 1

April 10

April 11

April 22

May 2

June 12

March 28

48.00

42.20

31.10

23.10

20.60

16.30

29.50

12.00

10.60

17.70

33.40

45.50

26.90

9.90

32.00

50.20

15.00

20.90

13.20

26.30

26.00

28.00

40.65

26.11

36.00

39.95

32.80

18.80

30.70

10.70

12.73

26.70

17.50

30.80

37.70

33.90

11.30

23.20

-

20.90

28.72

26.15

8.20

19.00

18.10

75,000

38,600

20,600

13,000

10,800

7,300

19,000

3,000

3,470

6,000

23,000

53,300

16,400

2,000

21,600

85,000

4,500

9,000

4,000

14,000

15,000

18,800

33,000

16,800

27,600

30,400

20,500

9,260

18,500

3,520

4,730

17,200

8,240

21,500

29,000

21,600

4,480

13,600

30,300

11,500

19,000

16,200

2,530

9,690

7,720

1927

1928

1929

1930

1931

1932

1933

1934

1935

1936

1937

1938

1939

1940

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

April 13

April 2

March 24

April 7

April 10

April 10

April 3

April 12

March 29

April 18

May 4

May 12

April 6

April 18

April 12

AprilS

April 12

August 13

March 29

March 27

April 21

April 16

April 10

May 12

April 12

April 20

June 25

April 15

April 10

April 23

July 2

July 9

April 6

April 12

March 28

June 16

April 1 1

April 19

April 17

April 4

April 4

June 1 1

April 16

April 28

April 1 1

20.00

21.80

-

18.90

6.48

22.07

15.18

10.02

13.07

25.00

11.57

15.49

20.13

21.88

27.86

24.10

38.16

19.79

--

33.10

40.60

41.68

29.11

45.61

33.52

-

24.63

18.63

26.17

32.43

24.67

16.03

--

28.88

9.75

34.45

21.23

22.71

44.92

45.55

37.50

20.03

45.69

34.30

27.86

10,600

12,200

17,100

9,610

1,630

10,400

4,380

3,210

2,920

14,500

4,180

6,600

6,720

10,000

13,400

11,000

28,200

10,400

21,300

22,000

35,000

34,200

15,200

54,000

23,600

23,900

14,600

9,620

15,400

21,400

14,700

7,500

6,300

17,200

3,400

26,600

10,800

13,200

52,000

55,000

28,200

9,420

53,500

23,700

15,800

159
05082500 RED RIVER OF THE NORTH AT GRAND FORKS, ND-Continued

Annual peak discharge and corresponding gage height Continued

[-, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height Continued

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

April 1 7

March 20

April 19

July 14

April 3

April 10

April 1 1

April 23

April 6

July 1

April 12

April 6

38.50

27.32

40.25

43.08

34.58

8.52

45.73

48.63

31.01

14.68

37.18

29.17

31,400

11,300

34,300

42,800

23,600

2,190

54,200

82,000

22,000

6,710

23,900

14,300

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

April 2

May 19

April 2

March 29

AprilS

April 13

AprilS

July 8

March 12

August 3

July 12

37.06

25.90

37.00

33.19

21.16

43.21

17.56

17.63

23.30

36.39

34.30

32,300

17,800

31,900

17,500

8,500

39,600

5,040

4,870

8,000

26,200

26,800

Annual peak discharge, from highest to lowest, and corresponding gage height

1897

1979

1882

1966

1978

1950

1969

1893

1965

1975

1989

1883

1947

1974

1948

1904

1984

1986

1972

1907

1920

1916

1943

1967

1906

1994

1962

1993

1952

1982

1970

April 10

April 23

April 18

April 4

April 1 1

May 12

April 16

April 24

April 17

July 14

April 13

April 26

April 21

April 19

April 16

April 27

April 2

April 2

April 17

April 7

March 3 1

April 23

April 12

April 4

April 18

July 12

June 16

August 3

April 20

April 12

April 28

50.20

48.63

48.00

45.55

45.73

45.61

45.69

45.50

44.92

43.08

43.21

42.20

40.60

40.25

41.68

40.65

37.06

37.00

38.50

39.95

-

37.70

38.16

37.50

36.00

34.30

34.45

36.39

-

37.18

34.30

85,000

82,000

75,000

55,000

54,200

54,000

53,500

53,300

52,000

42,800

39,600

38,600

35,000

34,300

34,200

33,000

32,300

31,900

31,400

30,400

30,300

29,000

28,200

28,200

27,600

26,800

26,600

26,200

23,900

23,900

23,700

1951

1976

1892

1946

1980

1896

1917

1915

1956

1945

1884

1908

1888

1922

1903

1910

1985

1987

1913

1960

1929

1905

1894

1923

1971

1955

1949

1902

1957

1953

1936

April 12

April 3

April 17

March 27

April 6

May 30

April 8

July 3

April 23

March 29

April 16

April 1 1

April 19

April 11

April 1 1

March 22

May 19

March 29

AprilS

April 12

March 24

May 16

April 24

April 22

April 1 1

April 10

April 10

March 30

July 2

June 25

April 18

33.52

34.58

33.40

33.10

31.01

32.00

33.90

30.80

32.43

~

31.10

32.80

29.50

28.72

28.00

30.70

25.90

33.19

26.70

28.88

-

26.11

26.90

26.15

27.86

26.17

29.11

26.00

24.67

24.63

25.00

23,600

23,600

23,000

22,000

22,000

21,600

21,600

21,500

21,400

21,300

20,600

20,500

19,000

19,000

18,800

18,500

17,800

17,500

17,200

17,200

17,100

16,800

16,400

16,200

15,800

15,400

15,200

15,000

14,700

14,600

14,500

160
05082500 RED RIVER OF THE NORTH AT GRAND FORKS, ND-Continued

Annual peak discharge and corresponding gage height Continued

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(frVs)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, from highest to lowest, and corresponding gage height Continued

1983

1901

1919

1941

1964

1885

1928

1921

1973

1942

1886

1963

1927

1932

1944

1940

1925

1954

1930

1968

1909

1899

1988

1914

1992

1926

April 6

April 7

JulyS

April 12

April 19

April 17

April 2

April 10

March 20

Aprils

May 3

April 1 1

April 13

April 10

August 13

April 18

June 12

April 15

April 7

June 1 1

July 30

April 17

Aprils

June 16

March 12

March 28

29.17

26.30

23.20

27.86

22.71

23.10

21.80

20.90

27.32

24.10

20.60

21.23

20.00

22.07

19.79

21.88

19.00

18.63

18.90

20.03

18.80

20.90

21.16

17.50

23.30

18.10

14,300

14,000

13,600

13,400

13,200

13,000

12,200

11,500

11,300

11,000

10,800

10,800

10,600

10,400

10,400

10,000

9,690

9,620

9,610

9,420

9,260

9,000

8,500

8,240

8,000

7,720

1958

1887

1939

1981

1938

1959

1891

1990

1991

1912

1898

1918

1933

1937

1900

1911

1890

1961

1934

1889

1935

1924

1977

1895

1931

July 9

April 15

April 6

July 1

May 12

April 6

April 13

Aprils

JulyS

AprilS

April 14

March 28

April 3

May 4

April 10

June 12

April 15

March 28

April 12

April 1

March 29

May 2

April 10

April 6

April 10

16.03

16.30

20.13

14.68

15.49

--

17.70

17.56

17.63

12.73

15.00

11.30

15.18

11.57

13.20

10.70

10.60

9.75

10.02

12.00

13.07

8.20

8.52

9.90

6.48

7,500

7,300

6,720

6,710

6,600

6,300

6,000

5,040

4,870

4,730

4,500

4,480

4,380

4,180

4,000

3,520

3,470

3,400

3,210

3,000

2,920

2,530

2,190

2,000

1,630

161
291.

so so SO so SO 

-^ ts) p ts) ON 

O\ sO & ON 

U» ~J ON Ui J± 

OJ OO ^ OJ -^ 

O NJ V> V> OO 

b b 

-^ NJ SO ~J U» 

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O (N t-> in (N TJ- rj oo vo i^-

r~ oo ON o t-> r~ r~ oo oo

O^ ON ON ON ON

O vO ^ OO fN 

ON >n t-> (N VO

OO

oo vo ^- (N in 

vo oo m o t*~

 (N ^ CO

OO TJ- (N CO t-> 

ON OO t^ O 

00 VO Tj- Tj- Tj-

 (N VO (N §

OO (N VO O-> 

fsl vO ^O 

OJ O O O ro

f> vo ro vo -<3-

CO VO O OO 

in f) f) O ON co o >n in 

co >n t-> vo 

m TJ- vo vo o

 ON ^- in CO

O ON OO O VO

VO (N CO O^ TJo r~- o oo o

O Tf VO ON 00 Tf o ^- oo >n

o m r> rj o

OO ON O O^ ^- co vo vo r-~ >n

(N t^ in in vo

 co co r~ oo t*~ r» m (N

p^^oo^ro^oo^

VO O ON OO ON 

CO O t-> OO OO

 ^ vq_ vq^ co^ oo^

ON ON *n ^ VO rj o ro '* rj ^ ON ON ^ O

o r~ oo r~

(N ^ (N (N 00 f> O O 1^-

 (N (S (N (N

t-> OO >n (N VO 

T^- vO (N ON

(N co rs (N m

(N co ^- in vo

oo oo oo oo oo

164
05082500 RED RIVER OF THE NORTH AT GRAND FORKS, ND-Continu

Monthly and annual mean discharges, in cubic feet per second Continued

[Data were not rounded in accordance with U.S. Geological Survey publication standards; , no data]

Year

1987

1988

1989

1990

1991

1992

1993

1994

Oct.

3,335

644.8

312.5

500.4

350.8

672.2

1,042

3,537

Nov.

2,009

658.6

341.4

442.6

316.2

494.5

756.7

1,930

Dec.

2,047

619.6

259.5

248.2

218.0

468.7

879.5

2,016

Jan.

1,715

452.7

278.3

189.9

195.0

519.0

809.5

1,570

Feb.

1,790

520.0

357.9

258.2

304.0

524.2

1,090

1,519

March

8,049

2,939

507.4

1,067

764.3

4,219

2,192

6,458

April

7,556

4,320

21,850

2,476

1,587

2,692

13,760

12,460

May

3,460

1,096

3,328

1,502

2,821

1,975

3,398

6,496

June

2,481

641.8

2,047

2,078

2,008

1,982

4,493

5,752

July

3,323

295.7

862.0

946.1

3,027

2,691

12,220

12,930
05083000 TURTLE RIVER AT MANVEL, ND

LOCATION.«Lat 48°04'43", long 97°11'03", in SEV4 sec.10, T.153 N., R.51 W., Grand Forks County, 

Hydrologic Unit 09020307, on left bank 10 ft downstream from bridge on State Highway No. 33, 

0.3 mi west of Manvel, and 10 mi upstream from mouth.

DRAINAGE AREA.--613 mi2, of which 57 mi2 is probably noncontributing.

PERIOD OF RECORD.-October 1945 to September 1970 (continuous record); water year 1972-73 and 

December 1979 to September 1982 (gage heights and annual maximum discharge only).

GAGE. Water-stage recorder. Datum of gage is 799.28 ft above sea level. Prior to June 29, 1959, 

nonrecording gage at same site and datum.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 28,000 ft3/s, Apr. 19, 1950, from rating 

curve extended above 4,300 ft3/s on basis of contracted-opening measurement of peak flow, gage 

height, 21.5 ft from floodmark; no flow at times some years.

Annual mean discharge

ouu 

Q

§400 

O 

LU 

CO

cc

LU 

Q.

LU 

LL

0

m

o

Z 200

LU 

CD 

CC

0

CO 100

Q

n

I I i i I I I I I I I I I

-

.

i i I I i i i i l i i i ill

111 I i I I I

-

.

llhlllhl, .II , , , , ,

§> a> o

GO CO O)

CM CO CO

o 

m S

in o in to r- rO> O> O) O)

166
05083000 TURTLE RIVER AT MANVEL, ND-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence]

Month

October

November

December

January

February

March

April

May

June

July

August

September

Annual

1,000 

500

Q 20°

o 1 °°

O

U 50 CO

CC

UJ 20

t 10

UJ

LL 5

O

=3 2

O

Z 1

CC

^ 0.2

O

CO 0.1

Q

0.05

0.02

0.01 1

t

Maximum

_. . Water year Difichflrcifi

* occurrence

49.1 1966

24.9 1958

10.2 1966

5.10 1951

4.84 1967

479 1966

1990 1950

1460 1950

269 1964

57.9 1968

22.1 1966

215 1957

299 1950

: 

; 

-

1

-

.

-

f

-

-

*

~

-

, , i . i ,, i ... 1 1 1

I 5 10

Minimum Mean

_. . Water year _. . Standard Coeffi- Percentage Discharge / Discharge . . ,. . , . . , /ft3/ \ ° /ft3/ \ deviation cientof ofannuai 

1 ' occurrence ( ' (ft3/s) variation discharge

0.626 1961 8.86 11.4 1.29 1.44

0.643 1964 7.75 5.21 0.67 1.26

0.097 1964 3.66 2.76 0.75 0.59

0 m 1.45 1.62 1.12 0.24

0 m 0.940 1.27 1.34 0.15

0 m 46.9 97.6 2.08 7.61

23.2 1958 348 437 1.26 56.4

7.87 1946 105 286 2.72 17.1

3.43 1961 52.8 59.6 1.13 8.56

1.15 1961 19.7 16.5 0.83 3.20

0.287 1946 5.91 5.10 0.86 0.96

0.180 1959 15.8 42.9 2.72 2.55

7.51 1961 51.2 58.8 1.15 100

Annual flow duration

1 1 1 . i i i | i i 1 1 1 1 1 , , | , , , , | , , , , , , , , , | , , , , | , , , | , , .

-

-

I

-*

9

 9 ~.

 -

« ;

 -

 ^ '.

9

]

.

*

"

 -

:~

-

, , i , , , , i , , , , i , , , , i , , , , i , , , , i , , , , i , , , . i , > , i ,

20 30 40 50 60 70 80 90 95 98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

167
05083000 TURTLE RIVER AT MANVEL, ND-Continued

Monthly and annual flow duration, in cubic feet per second

o> oo

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0.10

0.10

0.10

0.19

0.29

0.55

0.72

0.93

1.40

1.60

2.00

2.30

2.30

3.00

3.90

5.10

Feb.

0

0

0

0

0.10

0.10

0.10

0.10

0.28

0.47

0.56

0.56

0.80

0.95

1.30

1.60

1.90

1.90

2.20

March

0

0

0

0

0.08

0.08

0.08

0.08

0.44

0.87

1.20

1.70

1.70

1.70

3.94

12.3

40.4

73.4

265

April

0.42

7.20

17.8

22.3

26.0

29.8

35.4

41.9

50.1

60.0

76.9

102

136

190

309

448

659

931

1,370

May

7.62

9.94

12.0

13.9

15.3

16.7

18.2

19.7

21.2

23.2

25.6

29.7

36.5

44.4

54.6

74.9

102

156

318

June

3.20

5.34

6.68

9.23

12.0

13.6

15.2

17.2

19.9

23.0

26.3

30.1

34.5

41.3

49.2

64.8

87.6

137

216

July

0.67

1.40

2.80

3.82

4.84

5.94

7.33

8.88

10.0

11.1

13.2

14.6

16.3

18.2

21.5

26.5

32.8

43.2

71.8

Aug.

0.10

0.26

0.69

1.00

1.20

1.50

1.80

2.20

2.70

2.70

3.20

3.90

5.28

6.24

7.44

8.97

11.6

14.5

21.4

Sept.

0

0.17

0.17

0.40

0.40

0.52

0.69

0.90

1.20

1.60

2.10

2.70

4.34

5.61

8.78

12.9

17.5

26.1

50.9

Oct.

0.10

0.36

0.70

1.10

1.60

2.00

2.00

2.50

3.90

4.81

5.60

6.48

7.64

8.47

10.2

12.7

15.1

20.5

32.6
05083000 TURTLE RIVER AT MANVEL, ND-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

Recurrence

probability 'n erva. ' (years)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum

instantaneous 

(tf/s)

36.9

87.8

140

249

757

2,360

4,320

8,270

12,600

18,600

26,500

40,700

3-day period 7-day period

45.2 34.5

100 82.8

154 131

262 225

739 620

2,150 1,650

3,820 2,710

7,090 4,550

10,600 6,330

15,400 8,480

21,600 11,100

ng ng

15-day period

26.9

62.6

96.9

163

423

1,050

1,660

2,680

3,610

4,710

5,980

ng

30-day period

24.5

47.2

67.7

106

255

638

1,050

1,800

2,570

3,560

4,810

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (frVs)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 0

0.10 10 0

0.20 5 0

0.50 2 0

3 7

0 0

0 0

0 0

0 0.035

14 30 60

000

000

0 0 0.024

0.086 0.152 0.425

90

0

0.013

0.112

0.730

120 183

0.144 0.701

0.288 1.00

0.598 1.52

1.77 3.23

169
05083000 TURTLE RIVER AT MANVEL, ND-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0.203

0

0

0

0.223

0

0

0

0.267

0

0

0

0.339

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0

0.047

0.184

0.788

0.037

0.138

0.332

1.20

0.137

0.255

0.515

1.68

0.464

0.759

1.33

3.45

0

0

0

0.321

7 14 30

March-April-May

0

0

0

'0.375

0

0

0

0.423

0

0.009

0.186

3.53

September-October-November

0

0

0

0.334

0

0

0.082

0.590

0.006

0.039

0.129

0.838

0.039

0.145

0.361

1.61

'Graphical interpretation.

170
05083000 TURTLE RIVER AT MANVEL, ND-Continued

Annual peak discharge and corresponding gage height

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3**)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

March 23

April 13

April 19

April 10

April 19

April 6

April 7

June 22

April 1 1

AprilS

April 20

September 5

October 9

March 30

April 7

14.38

8.79

17.88

15.83

21.50

13.90

13.90

7.48

8.45

16.27

16.20

13.15

6.04

13.31

13.90

700

431

7,130

1,600

28,000

940

600

219

100

1,460

1,500

900

135

370

1,080

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1972

1973

1980

1981

1982

March 24

April 14

April 6

June 23

April 13

March 22

March 3 1

March 29

April 13

April 1 1

March 19

March 12

April 3

June 1 7

April 2

9.53

16.22

7.97

11.40

16.92

17.95

16.64

12.45

17.38

17.37

16.75

8.69

13.08

6.39

15.74

110

970

150

661

3,150

1,680

2,000

450

3,470

2,430

2,000

150

500

84.0

578

Annual peak discharge, from highest to lowest, and corresponding gage height

1950

1948

1969

1965

1970

1967

1972

1966

1949

1956

1955

1960

1962

1957

1951

April 19

April 19

April 13

April 13

April 1 1

March 31

March 19

March 22

April 10

April 20

AprilS

April 7

April 14

September 5

April 6

21.50

17.88

17.38

16.92

17.37

16.64

16.75

17.95

15.83

16.20

16.27

13.90

16.22

13.15

13.90

28,000

7,130

3,470

3,150

2,430

2,000

2,000

1,680

1,600

1,500

1,460

1,080

970

900

940

1946

1964

1952

1982

1980

1968

1947

1959

1953

1963

1973

1958

1961

1954

1981

March 23

June 23

April 7

April 2

April 3

March 29

April 13

March 30

June 22

April 6

March 12

October 9

March 24

April 1 1

June 1 7

14.38

11.40

13.90

15.74

13.08

12.45

8.79

13.31

7.48

7.97

8.69

6.04

9.53

8.45

6.39

700

661

600

578

500

450

431

370

219

150

150

135

110

100

84.0

171
05083000 TURTLE RIVER AT MANVEL, ND-Continued

Monthly and annual mean discharges, in cubic feet per second 

[Data were not rounded in accordance with U.S. Geological Survey publication standards]

Year

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

Oct.

2.07

11.4

6.40

1.30

6.66

16.7

7.47

0.819

2.61

3.17

3.63

0.958

37.4

1.45

9.67

0.626

5.92

4.47

1.11

12.4

49.1

8.90

4.46

8.82

14.0

Nov.

1.81

4.38

7.05

4.62

6.73

13.7

8.20

9.24

3.11

6.55

3.73

8.40

24.9

5.11

5.81

4.00

3.19

10.6

0.643

7.35

16.7

8.25

6.09

12.5

11.1

Dec.

0.368

1.90

2.50

0.468

6.87

4.52

5.52

3.73

2.35

2.73

0.658

3.62

7.39

1.28

3.30

0.613

1.29

3.51

0.097

3.38

10.2

5.65

3.71

8.15

7.76

Jan.

0.100

0.187

0.116

0.129

0.100

5.10

0.742

1.15

0.284

1.08

0.348

2.89

2.26

0.019

2.43

0.794

0

0.484

0

1.19

4.84

4.03

1.95

1.78

4.24

Feb.

0.100

0.100

0.100

0.100

0

2.00

0.100

0.796

1.22

0.671

0.472

0.639

4.21

0

1.83

0.550

0

0

0

1.48

1.66

4.84

1.73

0.179

0.837

March

140.5

73.3

0.100

0.100

0

41.2

1.79

18.1

26.6

0.048

0.668

45.2

12.2

38.4

37.3

36.0

0

21.5

0.074

2.09

479.2

96.4

100.8

0.081

1.91

April

35.4

193.1

1,164

384.6

1,987

211.0

167.1

27.2

45.3

225.0

323.1

40.6

23.2

59.5

429.5

25.9

359.3

46.0

148.3

557.7

395.1

535.3

50.2

631.7

622.5

May

7.87

20.6

68.4

28.7

1,456

24.1

14.8

26.3

16.5

18.9

62.6

16.2

14.2

16.5

24.4

14.6

133.1

13.9

20.1

85.9

148.1

191.0

20.2

31.6

157.6

June

5.08

58.8

88.2

34.0

48.9

14.1

7.00

89.7

20.4

110.1

42.8

13.9

13.9

11.2

17.7

3.43

169.8

12.5

269.1

72.8

34.7

32.1

54.1

37.9

56.8

July

48.0

8.29

21.1

8.40

42.3

3.95

41.0

42.5

11.3

10.5

7.00

1.64

19.6

7.82

7.10

1.15

20.6

10.1

20.8

19.4

45.5

6.61

57.9

16.0

15.0
05083500 RED RIVER OF THE NORTH AT OSLO, MN

LOCATION.--Lat 48°11'40", long 97°08'30", in SW1 /4 SW1 /4 sec.36, T.155 N., R.51 W., Walsh County, 

Hydrologic Unit 09020306, on bridge crossing the Red River 0.5 mi west of Oslo, Minn.

DRAINAGE AREA.--31,200 mi2, approximately, including 3,800 mi2 in closed basins.

PERIOD OF RECORD.--1936 to 1937, 1941 to 1943, 1945 to 1960, 1974 to 1976, operated as a 

continuous-record gaging station; 1985 to current, operated as a crest-stage station.

GAGE.-Wire-weight gage. Datum of gage is 772.65 ft above mean sea level, datum of 1929. Prior to 

Apr. 2, 1948, staff gage on railroad bridge 200 ft upstream and Apr. 3, 1948, to Sept. 8, 1959, wireweight gage at bridge 620 ft downstream, both at datum 5.00 ft higher.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 63,000 ft3/s, May 10, 1950, gage

height, 31.83 ft, site and datum then in use; maximum gage height, 36.72 ft, Apr. 14, 1989; no flow at 

times.

EXTREMES OUTSIDE PERIOD OF RECORD.-Maximum stage known, about 37.5 ft in 1897, present 

datum.

7,000

O 6,000

O

LU

Annual mean discharge

5,000

LU 

U_

O 

CD 

ID 

O 

Z 4,000

LU 

DC

X

W 3,000 

Q

2,000 I I I I I I I I I I I I I I I I

OLOOLO LOOLO LOOLOOlOOLOOLOOlO

173
05083500 RED RIVER OF THE NORTH AT OSLO, MN-Continued

Statistics of monthly and annual mean discharges

Maximum

Month Discharge 

(ft3/s)

October 3,770

November 2,440

December 1,940

January 1,740

February 1,680

March 3,310

April 27,000

May 40,900

June 11,800

July 25,600

August 3,170

September 2,240

Annual 6,700

100,000 

70,000

Q 50,000

O 40,000 

O 

W 30,000

DC

Q! 20,000

LU 

LU 

LU

^ 10,000

° 7,000

LU 5,000

ir 4,000

g 3,000

Q 2,000 

1,000,

,

Water year 

of 

occurrence

1974

1974

1974

1974

1976

1976

1950

1950

1950

1975

1949

1975

1975

Minimum

_. . Water year Discharge /

<ft3/s) of 

x ' occurrence

13.8 1937

2,020 1975

1,240 1975

1,300 1975

1,430 1975

1,730 1975

1,520 1937

1,430 1958

286 1936

92.9 1936

31.2 1936

18.9 1936

2,480 1976

Discharge 

<ft3/s)

2,020

2,270

1,650

1,580

1,590

2,350

9,710

6,780

4,150

4,560

1,630

904

4,690

Mean

Standard Coeffideviation cient of 

(ft3/s) variation

1,550 0.77

222 0.10

368 0.22

244 0.15

139 0.09

837 0.36

6,700 0.69

8,540 1.26

3,090 0.74

5,790 1.27

1,040 0.64

808 0.89

2,120 0.45

Percentage 

of annual 

discharge

5.14

5.79

4.22

4.03

4.06

6.00

24.8

17.3

10.6

11.6

4.16

2.31

100

Annual flow duration

1 ' i '

-

-

-

-

-

r

-

-

i ,

2 5

.

10

, , i , , , , i , , , , i , , , , i , , ,

20 30 40 50

* .

, i , , , , i , , ,

60 70

i i i i . i i , i i |

* .

80 90 95

-

-

-

-

-

-

-

-

-

98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

174
05083500 RED RIVER OF THE NORTH AT OLSO, MN-Continued

Monthly and annual flow duration, in cubic feet per second

[ng, statistic not given]

Percentage 

of days

discharge 

equaled or

exceeded

Jan. Feb. March April May June July Aug. Sept. Oct. 

95 1,250

90 1,290

85 1,310

80 1,320

75 1,360

70 1,380

65 1,610

60 1,680

55 1,690

50 1,690

45 1,700

40 1,700

35 1,700

30 1,710

25 1,710

20 1,720

15 1,740

10 1,760

5 ng

1,420

1,420

1,430

1,440

1,460

1,470

1,500

1,510

1,510

1,620

1,660

1,680

1,680

1,690

1,690

1,700

1,730

ng

ng

1,450

1,500

1,550

1,600

1,660

1,730

1,800

1,870

1,940

2,000

2,080

2,150

2,230

2,300

2,370

2,430

2,490

2,550

4,820

1,090

1,720

2,160

2,460

2,880

3,290

3,650

4,450

5,100

5,780

6,930

8,590

10,300

11,400

12,800

15,400

19,200

23,600

30,800

1,160

1,490

1,730

2,070

2,370

2,620

2,910

3,200

3,490

3,810

4,250

4,760

5,390

6,250

7,160

8,370

9,980

12,000

27,600

528

1,130

1,530

1,770

1,950

2,130

2,340

2,560

2,780

3,040

3,270

3,460

3,650

3,960

4,430

5,230

7,660

9,650

13,200

141

1,060

1,280

1,450

1,580

1,710

1,910

2,130

2,440

2,750

3,050

3,390

3,790

4,290

4,930

5,680

6,610

8,050

14,300

33.6

473

558

648

730

842

926

994

1,140

1,490

1,740

1,970

2,120

2,260

2,410

2,560

2,760

3,140

3,550

15.5

21.5

270

358

387

417

450

483

530

586

686

798

852

905

1,670

1,860

2,040

2,190

2,340

12.7

13.4

14.2

15.0

21.0

1,720

1,960

2,040

2,100

2,160

2,230

2,290

2,350

2,510

2,890

3,180

3,470

3,840

4,210
05083500 RED RIVER OF THE NORTH AT OSLO, MN-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

<ft3/s)

_ . Recurrence Exceedance . . . 

. ..... interval probability . . K ' (years)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 3-day period 7-day period 15-day period 30-day period 

(ft3/s)

2,990

5,440

7,320

10,300

18,600

31,400

40,100

51,000

59,000

66,700

74,300

84,000

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng ng

ng ng

ng ng

ng ng

ng ng

ng ng

ng ng

ng ng

ng ng

ng ng

ng ng

ng ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

Probability of occurrence of annual low discharges

[ng, statistic not given]

Minimum mean discharge (f^/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 ng

0.10 10 ng

0.20 5 ng

0.50 2 ng

3

ng

ng

ng

ng

7 14 30

ng ng ng

ng ng ng

ng ng ng

ng ng ng

60 90

ng ng

ng ng

ng ng

ng ng

120 183

ng ng

ng ng

ng ng

ng ng

176
05083500 RED RIVER OF THE NORTH AT OSLO, MN--Continued

Probability of occurrence of seasonal low discharges

[ng, statistic not given]

Minimum mean discharge (fl3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

73.5

171

392

1,130

78.5

185

426

1,220

87.3

205

473

93.8

229

546

1,340 1,630

1 7 14 30

March-April-May

ng ng

ng ng

ng ng

ng ng

ng

ng

ng

ng

ng

ng

ng

ng

September-October-November

ng ng

ng ng

ng ng

ng ng

ng

ng

ng

ng

ng

ng

ng

ng

177
05083500 RED RIVER OF THE NORTH AT OSLO, MN-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft'/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1936

1937

1942

1943

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

April 18

May 4

April 4

April 13

March 26

March 30

April 22

April 17

April 10

May 10

April 12

April 21

June 25

April 15

April 10

April 24

July 2

-

6.47

-

29.16

25.11

-

--

24.08

31.83

25.46

--

17.55

12.39

19.46

25.50

17.42

15,000

4,070

12,500

31,500

24,000

--

33,800

41,400

18,700

63,000

24,800

24,800

14,900

9,790

16,400

22,500

14,900

1958

1959

1960

1974

1975

1976

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

July 10

April 7

April 12

April 19

April 23

April5

May 20

April 3

March 30

April 6

April 14

April5

July 10

March 15

April 7

July 13

10.29

10.78

~

-

24.43

34.20

31.76

20.10

36.72

15.64

12.04

22.47

-

30.86

7,890

7,200

17,100

'33,000

'42,500

'23,200

17,800

30,000

18,500

11,500

33,500

4,900

5,200

8,200

28,100

26,600

Annual peak discharge, from highest to lowest, and corresponding gage height

1950

1975

1948

1947

1989

1974

1943

1986

1993

1994

1951

1952

1945

1976

1956

1949

1987

May 10

April 23

April 17

April 22

April 14

April 19

April 13

April 3

April 7

July 13

April 12

April 21

March 26

April 5

April 24

April 10

March 30

31.83

-

-

-

36.72

-

29.16

34.20

--

30.86

25.46

--

--

25.50

24.08

31.76

63,000

'42,500

41,400

33,800

33,500

'33,000

31,500

30,000

28,100

26,600

24,800

24,800

24,000

'23,200

22,500

18,700

18,500

1985

1960

1955

1936

1953

1957

1942

1988

1954

1992

1958

1959

1991

1990

1937

1946

May 20

April 12

April 10

April 18

June 25

July 2

April 4

April 6

April 15

March 15

July 10

April 7

July 10

April 5

May 4

March 30

24.43

--

19.46

--

17.55

17.42

-

20.10

12.39

22.47

10.29

10.78

12.04

15.64

6.47

25.11

17,800

17,100

16,400

15,000

14,900

14,900

11,900

11,500

9,790

8,200

7,890

7,200

5,200

4,900

4,070

--

1 Daily mean.

178
05083500 RED RIVER OF THE NORTH AT OSLO, MN--Continued

Monthly and annual mean discharges, in cubic feet per second

[Data were not rounded in accordance with U.S. Geological Survey publication standards; , no data]

Year

1936

1937

1941

1942

1943

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1974

1975

1976

Oct. Nov. Dec. Jan.

_

13.8

__

__

~

._

_

_.

..

--

_

__

--

__

3,768 2,443 1,945 1,735

1,944 2,020 1,240 1,299

2,335 2,350 1,773 1,707

Feb. March

..

._

._

._

~

_

~

._

~

._

._

1,654 2,023

1,431 1,732

1,685 3,306

April

5,111

1,521

6,819

~

12,910

10,230

~

27,050

15,340

17,260

3,266

4,967

6,010

9,280

4,573

2,686

3,496

9,289

17,290

17,610

9,705

May

1,634

1,715

6,405

5,982

3,471

7,775

8,278

2,791

40,940

8,444

5,556

3,068

3,583

1,826

5,602

3,271

1,433

1,696

3,328

13,940

15,830

2,625

June

286.4

935.2

3,314

2,074

10,690

2,508

5,193

11,750

4,310

3,604

9,069

3,336

2,424

2,979

4,363

1,359

2,530

2,699

6,293

5,887

1,546

July

92.9

1,695

__

4,502

3,400

7,936

5,762

4,738

2,167

2,219

1,479

6,140

3,739

1,972

1,954

3,000

25,590

1,125
05083600 MIDDLE BRANCH FOREST RIVER NEAR WHITMAN, ND

LOCATION.--Lat 48°14'50", long 98°07'00", in SE 1 /4NW1 /4 sec.16, T.155 N., R.58 W., Walsh County, 

Hydrologic Unit 09020308, 150 ft downstream from bridge on State Highway 35, and 6 mi north of 

Whitman.

DRAINAGE AREA.--47.7 mi2 , of which about 9 mi2 is probably noncontributing.

PERIOD OF RECORD.-October 1960 to September 1990.

GAGE.-Water-stage recorder. Datum of gage is 1,510 ft above sea level, from topographic map.

EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 984 ft3/s, May 19, 1974, gage height, 

7.11 ft; maximum gage height, 7.96 ft, Apr. 4, 1987; no flow for many months each year.

Annual mean discharge

HI 

CC 6

O 

CO 4

O

I I i i i I I i i i i i i i I I

OlOplOOlO ^~^~WCNJCOCO lOOLO

180
05083600 MIDDLE BRANCH FOREST RIVER NEAR WHITMAN, ND-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence; ng, statistic not given]

Maximum

Month

October

November

December

January

February

March

April

May

June

July

August

September

Annual

Discharge 

(ft3/s)

3.45

0.439

0.029

0

7.10

15.1

87.9

68.8

19.5

33.3

7.02

1.23

11.4

Water year 

of 

occurrence

1983

1983

1982

m

1981

1966

1979

1974

1964

1982

1966

1981

1974

Minimum

Discharge 

(ft3/s)

0

0

0

0

0

0

0

0

0

0

0

0

0.009

Water year 

of 

occurrence

m

m

m

m

m

m

m

m

m

m

m

m

1963

Discharge 

(ft3/s)

0.210

0.040

0

0

0.240

3.09

19.5

5.22

1.75

2.13

0.560

0.110

2.73

Mean

Standard 

deviation 

(ft3/s)

0.67

0.10

0.01

0

1.30

4.68

22.5

14.2

4.36

6.23

1.63

0.30

2.77

Coefficient of 

variation

3.26

2.63

3.80

ng

5.48

1.51

1.15

2.73

2.48

2.93

2.94

2.66

1.01

Percentage 

of annual 

discharge

0.62

0.11

0

0

0.72

9.40

59.4

15.9

5.33

6.48

1.69

0.34

100

Annual flow duration

IUU

70

50 

40

30

z 20

O

uj 10

CO 7

£ 5 

Q. 4 

1- 3

iii 2 LL

1 0.7

0 0.5

Z 0.4

u} °'3 

(3 0.2 

CC

I 0.1 

&0.07

0'.03

0.02 

n m

. i . | i . . . | i . . i i . i . . | i . i . | . . . . ,. i i i j i i . . | . i i . | . ... | i .. , | ... | ,

r

-

r

:

1 

'_

\

'-- 

f

r

1 , , , , 1 , , , , , , , , , 1 , , , , 1 , . , , 1 , , , , 1 , , , , 1 , , , , 1 , , , , 1 , , , , 1 , , , 1 ,

.;

j

-

-

-_

-.

:

j

-.

-.

-

1

10 20 30 40 50 60 70 80

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

90 95 98

181
05083600 MIDDLE BRANCH FOREST RIVER NEAR WHITMAN, ND-Cont

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

March

0

0

0

0

0

0

0

0

0

0

0

0

0

0.02

0.34

1.00

3.00

9.53

21.9

April

0

0

0

0

0.09

0.32

0.80

1.50

2.00

2.80

4.46

5.72

8.02

11.3

16.1

23.1

35.8

57.6

93.4

May

0

0

0

0

0

0

0

0.03

0.07

0.12

0.17

0.31

0.58

0.80

1.10

1.50

3.02

6.02

22.6

June

0

0

0

0

0

0

0

0

0

0

0

0.03

0.08

0.14

0.24

0.33

0.78

1.90

7.40

July

0

0

0

0

0

0

0

0

0

0

0

0

0

0.03

0.19

0.46

1.50

3.69

10.4

Aug.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.09

0.37

2.60

Sept.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.07

0.18

0.46

Oct.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.05

0.14

0.27

0.91
05083600 MIDDLE BRANCH FOREST RIVER NEAR WHITMAN, ND-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

_ . Recurrence Exceedance . . .

proaabHHy ££

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 3-day period 7-day period 15-day period 30-day period 

(ft3/s)

0.900 0.173

4.10 1.32

8.60 3.41

20.2 9.58

88.2 49.1

315 167

569 273

1,010 417

1,420 523

1,900 622

2,440 712

3,240 ng

0.078

0.765

2.19

6.73

37.6

126

200

290

349

399

442

ng

0.043 0.023

0.489 0.282

1.47 0.874

4.69 2.85

26.0 15.9

80.0 47.7

118 68.9

159 90.2

182 102

200 110

213 116

ng ng

Probability of occurrence of annual low discharges

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 ng

0.10 10 ng

0.20 5 ng

0.50 2 ng

3 7 14 30

ng ng ng ng

ng ng ng ng

ng ng ng ng

ng ng ng ng

60

ng

ng

ng

ng

90 120 183

ng ng 0

ng ng 0

ng ng 0

ng ng 0

183
05083600 MIDDLE BRANCH FOREST RIVER NEAR WHITMAN, ND-Continued

Probability of occurrence of seasonal low discharges

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurrence

exceedance interval

probability (years)

14 30 14 30

0.05

0.10

0.20

0.50

0.05

0.10

0.20

0.50

20

10

5

2

20

10

5

2

ng 

ng 

ng

ng 

ng 

ng 

ng

December-January-February

ng ng 

ng ng 

ng ng 

ng ng 

June-July-August

ng 

ng 

ng 

ng

ng 

ng 

ng 

ng

ng 

ng 

ng 

ng

March-April-May

ng ng 0 0 

ng ng 0 0 

ng ng 0 0 

ng ng 0 0 

September-October-November

ng 

ng 

ng 

ng

ng ng 0

ng ng 0

ng ng 0

ng ng 0

184
05083600 MIDDLE BRANCH FOREST RIVER NEAR WHITMAN, ND-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(tf/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

March 23

April 21

June 25

June 19

April 1 1

Aprils

May 10

March 8

April 11

April 7

AprilS

April 16

March 12

May 19

July 1

3.11

4.62

3.44

5.23

5.76

4.91

5.33

4.27

6.82

4.84

6.54

4.12

--

7.11

4.55

1.60

100

7.00

192

240

134

192

5.00

425

74.0

235

53.0

4.00

984

71.0

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

June 12

April 10

April 9

April 22

May 27

April 2

July 24

AprilS

March 30

March 16

March 25

April 7

April 4

April 22

April 3

5.30

4.10

5.82

7.17

6.10

4.47

6.38

5.03

4.41

5.19

5.10

6.85

4.62

4.62

--

140

37.0

282

737

420

65.0

506

67.0

25.0

62.0

86.0

654

22.0

34.0

7.00

Annual peak discharge, from highest to lowest, and corresponding gage height

1974

1979

1987

1982

1969

1980

1978

1965

1971

1964

1967

1976

1966

1962

1986

May 19

April 22

April 7

July 24

April 11

May 27

April 9

April 11

AprilS

June 19

May 10

June 12

AprilS

April 21

March 25

7.11

7.17

6.85

6.38

6.82

6.10

5.82

5.76

6.54

5.23

5.33

5.30

4.91

4.62

5.10

984

737

654

506

425

420

282

240

235

192

192

140

134

100

86.0

1970

1975

1983

1981

1985

1972

1977

1989

1984

1988

1963

1990

1968

1973

1961

April 7

July 1

AprilS

April 2

March 16

April 16

April 10

April 22

March 30

April 4

June 25

April 3

March 8

March 12

March 23

4.84

4.55

5.03

4.47

5.19

4.12

4.10

4.62

4.41

4.62

3.44

~

4.27

-

3.11

74.0

71.0

67.0

65.0

62.0

53.0

37.0

34.0

25.0

22.0

7.00

7.00

5.00

4.00

1.60

185
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186
05084000 FOREST RIVER NEAR FORDVILLE, ND

LOCATION.--Lat 48°H'50", long 97°43'49", on line between secs.32 and 33, T.155 N., R.55 W., Walsh 

County, Hydrologic Unit 09020308, on right bank 50 ft upstream from highway bridge, 0.5 mi 

downstream from South Branch, and 3 mi southeast of Fordville.

DRAINAGE AREA.--456 mi2, of which about 120 mi2 is probably noncontributing. 

PERIOD OF RECORD.-April 1940 to current year.

GAGE. Water-stage recorder. Datum of gage is 1,035 ft above sea level, from topographic map. Prior to 

July 21, 1951, nonrecording gage at site 50 ft downstream at same datum.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 16,400 ft3/s, Apr. 18, 1950, gage 

height, 14.48 ft; no flow at times.

Annual mean discharge

zuu 

180

O

z 0 1 60 

O LU

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LU 

Q.

LU 120

LUlien

O

Z 80

LU

a: 60

O 

W 40

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187
05084000 FOREST RIVER NEAR FORDVILLE, ND-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence]

Maximum

Month

Discharge Watey«" 

' ' occurrence

October 57.9

November 23.7

December 19.2

January 16.3

February 29.9

March 278

April 1,180

May 1,040

June 255

July 232

August 280

September 53.3

Annual 193

1,000 

700

500 

400 

i 300

O 200 

HI 

CO

£ 100 

Q_ 

h- 70 

HI 

HI 50

o 40 

5 30

O 20

z

DISCHARGE, O) *kVI ->l 

2

1

1 983

1 983

1 983

1 986

1981

1 966

1 950

1 950

1 964

1 982

1 993

1 993

1 950

Minimum

Discharge 

(ft3/s)

1.52

2.03

2.06

2.70

1.21

4.07

9.46

7.07

2.74

3.34

1.64

0.913

6.37

Wateryear D|scharge 

occurrence ^

1941 10.0

1941 8.73

1941 7.24

1941 6.20

1963 7.23

1941 59.7

1991 196

1961 61.2

1940 33.2

m 24.9

1945 12.5

1940 8.81

1990 36.7

Mean

Standard Coeffideviation cient of 

(ft3/s) variation

8.43 0.84

4.24 0.49

3.53 0.49

2.53 0.41

4.54 0.63

65.5 1.10

241 1.23

154 2.52

45.4 1.37

42.8 1.72

37.4 2.98

7.62 0.87

31.6 0.86

Percentage 

of annual 

discharge

2.30

2.00

1.66

1.42

1.66

13.7

45.0

14.1

7.62

5.72

2.88

2.02

100

Annual flow duration

L.

7'

r

-

'-

\

i . . i i | i i , , 1 1 1 1

.

i , , > , i i i 1 1 . , , ,

r | i i i i | . i

* .

, . | , , i , | i , i i | i i i , | , i i i i i i i i i i . i |

* . .

, i , , , , i ,,,i

-j

-_

-

-

-_

~

10 20 30 40 50 60 70 80

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

90 95 98

188
05084000 FOREST RIVER NEAR FORDVILLE, ND-Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

2.70

3.00

3.50

3.80

4.10

4.50

4.90

4.90

5.30

5.80

5.80

6.80

6.80

6.80

7.40

7.40

8.10

8.70

11.3

Feb.

2.00

2.70

3.10

3.60

4.10

4.70

4.70

5.40

5.40

5.40

6.30

6.30

7.37

7.65

7.92

8.20

8.99

11.1

13.2

March

3.70

4.71

5.20

5.78

6.27

6.90

7.20

7.51

8.42

8.94

10.2

11.9

13.9

18.0

29.3

50.0

91.6

178

321

April

8.01

10.4

12.8

14.4

16.4

18.9

21.9

26.8

33.0

41.5

53.4

71.0

92.2

118

157

210

296

447

811

May

6.73

8.59

9.84

11.0

12.5

13.4

14.3

15.4

16.9

18.4

20.4

22.8

26.6

30.8

35.5

43.3

58.5

86.0

169

June

4.10

5.51

6.36

7.03

8.00

9.31

11.3

12.6

13.9

15.2

16.6

18.5

20.5

23.0

26.4

31.5

39.6

54.9

103

July

2.40

3.00

3.70

3.70

4.75

5.39

6.05

6.57

7.41

7.82

9.26

10.7

12.3

13.7

15.9

19.9

29.9

45.6

74.6

Aug.

1.40

2.20

2.80

2.80

3.50

3.50

4.43

4.87

5.40

5.74

6.09

6.83

7.18

7.52

8.62

9.70

12.0

15.3

23.0

Sept.

2.10

2.90

2.90

3.40

4.00

4.00

4.80

4.80

5.90

6.31

6.75

7.24

7.92

8.38

9.26

10.0

12.7

17.6

25.5

Oct.

2.30

3.20

3.80

4.50

4.50

5.49

5.93

6.38

6.93

7.67

8.12

8.56

9.58

11.0

12.0

13.1

14.9

17.5

24.3
05084000 FOREST RIVER NEAR FORDVILLE, ND-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge

(ft3/8)

_ . Recurrence Exceedance . . .

- » '<;r,'

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 3-day period 7-day period 15-day period 30-day period 

(f^/s)

15.3

58.6

114

244

908

2,850

4,850

8,160

11,100

14,500

18,200

23,600

11.2 9.91

41.4 33.6

78.6 61.1

162 121

559 387

1,590 1,040

2,570 1,650

4,060 2,550

5,320 3,310

6,660 4,110

8,080 4,950

ng ng

7.79

25.5

45.4

87.3

265

675

1,030

1,540

1,960

2,380

2,820

ng

7.30

20.0

33.3

59.7

168

424

660

1,030

1,340

1,690

2,070

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (ftVs)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 0.524

0.10 10 0.848

0.20 5 1.36

0.50 2 2.73

3

0.657

0.994

1.50

2.85

7 14 30 60

0.930 1.08 1.46 1.99

1.28 1.45 1.88 2.44

1.78 2.01 2.48 3.08

3.06 3.43 3.96 4.63

90

2.43

2.92

3.61

5.28

120 183

2.78 3.18

3.33 3.76

4.09 4.61

5.94 6.74

190
05084000 FOREST RIVER NEAR FORDVILLE, ND-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

1.58

1.99

2.58

4.01

1.65

2.09

2.72

4.22

1.77

2.22

2.87

4.42

2.12

2.61

3.31

4.93

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0.687 1.12

1.04

1.63

3.38

1.50

2.11

3.86

1.49

1.87

2.46

4.24

1.96

2.33

2.95

4.96

2.75

3.26

4.01

5.92

7 14 30

March-April-May

3.28

3.79

4.54

6.54

3.57

4.12

4.96

7.38

5.12

5.85

7.15

12.0

September-October-November

1.30

1.70

2.25

3.67

1.42

1.91

2.64

4.49

1.74

2.30

3.14

5.14

2.12

2.80

3.78

6.13

191
05084000 FOREST RIVER NEAR FORDVILLE, ND-ContJnued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(tfls)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1940

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

April 17

AprilS

April 4

June 9

April5

March 27

March 20

March 23

April 18

April 7

April 18

March 29

July 2

May 30

June 15

March 31

June 6

March 22

July 4

April 4

April 7

March 19

April 6

JulyS

June 19

April 1 1

March 2 1

March 30

3.60

8.03

9.73

6.72

5.89

3.15

6.14

7.40

14.15

5.64

14.48

-

3.94

2.04

4.29

8.46

8.14

3.53

1.87

2.91

7.55

2.69

7.69

3.67

9.03

10.22

7.14

7.40

130

2,250

3,650

1,620

400

243

950

700

14,600

1,470

16,400

500

825

130

1,020

3,000

3,370

356

17.0

321

2,810

65.0

2,600

590

3,960

4,730

1,580

2,030

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

March 8

April 1 1

AprilS

AprilS

April 14

June 1 7

May 20

April 12

March 29

July 14

April 6

April 20

April 2

April 2

July 25

March 7

March 24

March 13

March 17

April5

March 24

April 16

June 3

September 1 8

March 7

July 26

March 21

4.48

8.80

7.68

8.39

6.43

3.56

9.86

5.68

5.46

2.43

5.50

9.98

2.55

2.73

6.49

5.23

3.92

5.45

5.79

6.00

3.23

2.79

1.67

--

-

5.72

4.66

500

3,290

2,380

2,800

1,500

384

5,050

1,270

1,100

100

1,200

5,200

105

180

1,760

995

386

625

1,380

1,410

229

158

17.0

77.0

530

1,090

721

Annual peak discharge, from highest to lowest, and corresponding gage height

1950

1948

1979

1974

1965

1964

1942

1956

1969

1955

1960

1971

1962

1970

1941

April 18

April 18

April 20

May 20

April 1 1

June 19

April 4

June 6

April 11

March 3 1

April 7

Aprils

April 6

AprilS

April 8

14.48

14.15

9.98

9.86

10.22

9.03

9.73

8.14

8.80

8.46

7.55

8.39

7.69

7.68

8.03

16,400

14,600

5,200

5,050

4,730

3,960

3,650

3,370

3,290

3,000

2,810

2,800

2,600

2,380

2,250

1967

1982

1943

1966

1972

1949

1987

1986

1975

1978

1976

1993

1973

1983

1946

March 30

July 25

June 9

March 21

April 14

April 7

AprilS

March 17

April 12

April 6

March 29

July 26

June 17

March 7

March 20

7.40

6.49

6.72

7.14

6.43

5.64

6.00

5.79

5.68

5.50

5.46

5.72

3.56

5.23

6.14

2,030

1,760

1,620

1,580

1,500

1,470

1,410

1,380

1,270

1,200

1,100

1,090

384

995

950

192
05084000 FOREST RIVER NEAR FORDVILLE, ND-Continued

Annual peak discharge and corresponding gage height-Continued

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3*)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, from highest to lowest, and corresponding gage height Continued

1952

1994

1947

1985

1963

1992

1951

1968

1944

1984

1973

1957

1959

July 2

March 2 1

March 23

March 13

JulyS

March 7

March 29

March 8

AprilS

March 24

June 17

March 22

April 4

3.94

4.66

7.40

5.45

3.67

-

-

4.48

5.89

3.92

3.56

3.53

2.91

825

721

700

625

590

530

500

500

400

386

384

356

321

1945

1988

1981

1989

1940

1953

1980

1977

1991

1961

1958

1990

March 27

March 24

April 2

April 16

April 17

May 30

April 2

July 14

September 1 8

March 19

July 4

June 3

3.15

3.23

2.73

2.79

3.60

2.04

2.55

2.43

--

2.69

1.87

1.67

243

229

180

158

130

130

105

100

77.0

65.0

17.0

17.0

193
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195
05085000 FOREST RIVER AT MINTO, ND

LOCATION.--Lat 48°16'10", long 97°22'10", in SE! /4 sec.51, T.156 N., R.52 W., Walsh County, 

Hydrologic Unit 09020308, on right bank 30 ft upstream from dam in Minto, 150 ft upstream from 

Burlington Northern Railway bridge, and 900 ft east of U.S. Highway 81.

^ ^

DRAINAGE AREA.--740 mi , of which about 120 mi is probably noncontributing. 

PERIOD OF RECORD.-April 1944 to current year.

GAGE.-Water-stage recorder. Datum of gage is 806.95 ft above sea level. Prior to July 15, 1954, 

nonrecording gage at site 400 ft upstream at same datum.

EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 16,600 ft3/s, Apr. 18, 1950; maximum 

gage height, 11.80 ft, Apr. 19, 1948, and Apr. 18, 1950; no flow at times.

Annual mean discharge

ouu 

Q

Q400 

O 

LU 

CO

cc

LU 

Q.

UJ 300 

LU 

LU

O

CD

0

Z 200

LU 

(3 

CC

O 

CO 100

Q

o <

! ^

i i i i i i i i i i i i i

-

-

.

i i i i i i i i i i i i III

Dinoinoinoinoinoinom

DCOO)G)OOT T CMCMCOCO^^ 

&COCOCOG)O)G)G)G)G)G)G)0)O)

1 1 1 1 1 1 1 1 1

-

.

Ihll III , ill III II, ll ill Ih, II,

DLOOLOOLOOLOOLOC OLOcpcpr^r^cocoooc

7)O)O>O>O)O)O)O)O)O)C

196
05085000 FOREST RIVER AT MINTO, ND-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence]

Month

Maximum Minimum Mean

n- u «.« Water year Water year Standard Coeffi- uiscnarge . uiscnarge . uiscnarge . . . . _ 

fft3/sl fft3/sl fft3/sl deviation cient of 

* ' occurrence ( ' occurrence ( ' (ft3/s) variation

October 59.1 1983 0 1991 9.20 9.20 1.00

November 23.6 1983 0.971 1991 8.85 5.16 0.58

December 13.4 1983 0.291 1990 4.81 3.40 0.71

January 9.66 1983 0 m 2.41 2.49 1.03

February 17.3 1981 0 m 2.01 3.23 1.61

March 438 1966 0 1962 59.4 88.0 1.48

April 1,570 1950 21.9 1953 285 335 1.17

May 1,520 1950 10.6 1946 92.3 222 2.40

June 267 1964 4.21 1991 45.6 59.0 1.29

July 236 1982 1.87 1980 27.3 39.6 1.45

August 328 1993 0 1946 15.2 46.7 3.08

September 69.0 1993 0 m 8.65 12.2 1.41

Annual 268 1950 4.36 1990 47.2 45.4 0.96

1,000 

700

300 

i 200

8LU 100

w 70 

DC en

LLJ 9n Q_ 40 

l_ 30

LU 20 

LL

5 10

3 I

Z 4

0 5 I 2

DC

I 1

W 0.7

Q 0.5 

0.4 

0.3

0.2

0.1,

Annual flow duration

. i , i , i i . , 1 1 1 1 1 . i . 1 1 i . i i | . i 1 1 1 1 , , , | . , 1 1 1 1 1 i i | i , , , | , i , i | i.i |

r

r .

r 9

E * * .

r 

\- 

~_ 9

i , , , , i , , , , , , , , , i , . , , i , , , . i , , , , i , , , , i , , , , i , , , , i , , . , i ... i

> 5 10 20 30 40 50 60 70 80 90 95

Percentage 

of annual 

discharge

1.64

1.58

0.86

0.43

0.36

10.6

50.9

16.5

8.13

4.87

2.70

1.54

100

-.

-

-

-_

_

-i

-_

i

i

98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

197
05085000 FOREST RIVER AT MINTO, ND-Continued

Monthly and annual flow duration, in cubic feet per second

<o

00

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0.13

0.25

0.39

0.48

0.59

0.59

0.73

0.91

1.10

1.40

1.70

2.10

2.70

3.30

4.44

5.44

6.37

7.84

Feb.

0

0

0

0.08

0.11

0.24

0.31

0.41

0.41

0.70

0.91

0.91

1.20

1.50

2.00

2.60

3.40

4.70

6.27

March

0

0

0.08

0.24

0.34

0.48

0.68

0.96

0.96

1.90

1.90

3.87

4.71

8.93

17.2

35.6

84.9

164

359

April

3.54

14.7

21.7

25.5

29.9

35.5

41.5

49.5

58.4

72.2

89.3

111

145

188

240

310

435

671

1,230

May

11.2

13.6

15.6

17.4

18.8

20.1

21.3

22.6

24.7

27.2

31.7

37.8

44.6

52.2

62.4

80.5

101

143

282

June

5.61

7.45

9.67

11.9

13.6

15.0

16.4

17.8

19.3

21.4

24.0

27.3

30.8

35.0

40.3

47.3

59.1

77.8

151

July

1.40

2.90

4.29

5.08

5.94

6.55

7.82

9.55

10.8

14.0

14.4

16.2

18.1

20.7

23.7

29.5

37.4

51.8

84.3

Aug.

0

0.51

0.99

1.90

1.90

2.93

3.52

4.08

4.62

5.87

6.77

7.57

8.31

9.05

11.3

12.9

15.3

19.2

29.2

Sept.

0

0.09

0.39

0.54

1.30

1.80

2.50

3.76

4.71

5.17

6.24

6.95

7.67

8.65

9.67

11.8

14.4

18.1

26.6

Oct.

0

0.78

1.70

2.70

3.86

4.69

5.14

5.86

6.19

6.51

7.61

8.52

9.44

10.7

12.4

13.8

15.3

17.8

23.5
05085000 FOREST RIVER AT MINTO, ND-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

Recurrence

. ..." interval probability , , ivGdrsi

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum

instantaneous 

(ft3/s)

39.5

104

172

313

939

2,680

4,530

7,830

11,000

15,000

19,700

27,300

3-day period 7-day period

26.9 23.5

71.6 58.9

119 94.9

217 167

657 479

1,880 1,310

3,200 2,190

5,550 3,730

7,840 5,220

10,700 7,030

14,000 9,210

ng ng

15-day period

17.7

44.1

70.5

123

337

870

1,390

2,270

3,070

4,010

5,090

ng

30-day period

14.2

32.6

50.3

84.3

222

564

909

1,500

2,060

2,730

3,520

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (n^/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 0

0.10 10 0

0.20 5 0

0.50 2 0.242

3 7

0 0

0 0

0 0

0.264 0.286

14 30 60

000

0 0 0.039

0 0 0.157

0.337 0.465 0.728

90

0.058

0.179

0.389

1.27

120 183

0.314 0.823

0.521 1.23

0.915 1.94

2.32 4.14

199
05085000 FOREST RIVER AT MINTO, ND-Continued

Probability of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0.451

0

0

0

0.471

0

0

0

0.546

0

0

0.116

0.709

0

0

0

7 14 30

March-April-May

0

0

0.059

0.470 0.597

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0

0.026

0.544

2.44

0

0.097

0.940

3.18

0

0.315

1.12

3.97

0.140

0.529

1.68

6.59

0

0

0

1.

0

0

0.153

1.05

0.080

0.434

1.37

7.64

September-October-November

0

0

0

,81 2.98

0

0

0.237

^.50

0

0.234

0.886

4.03

Graphical interpretation.

200
05085000 FOREST RIVER AT MINTO, ND-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

'1882

! 1897

! 1907

'1916

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

April

April

April

April

April 10

March 27

March 22

March 25

April 19

April 7

April 18

Aprils

April 2

June 4

June 16

April 2

April 21

March 23

June 10

April 2

April 6

March 22

April 19

March 24

June 21

April 12

March 2 1

March 3 1

--

~

-

5.00

2.11

-

4.12

11.80

8.19

11.80

3.60

2.78

3.53

2.61

8.56

6.63

2.72

2.72

2.45

5.60

1.90

6.68

2.54

4.31

7.48

7.82

7.22

2,200

1,850

1,750

1,600

650

250

1,000

1,100

11,500

2,020

16,600

900

370

910

391

4,200

2,930

461

463

338

2,050

147

2,400

250

1,460

3,710

3,100

3,070

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

March 27

April 12

April 9

April 10

March 17

June 19

April 16

April 15

March 3 1

April 10

March 3 1

April 20

April 1

June 28

July 26

March 15

March 26

March 14

March 19

April 4

May 29

April 18

April 15

April 4

March 8

July 28

March 26

2.31

7.67

7.04

5.84

5.96

1.93

7.79

6.73

7.03

1.58

6.52

8.93

2.01

2.04

4.07

3.52

2.77

3.39

3.40

6.91

3.71

2.49

1.56

1.54

3.34

3.70

~

315

3,960

2,220

2,460

2,120

208

4,580

1,600

1,500

77.0

1,600

6,730

167

176

1,140

820

394

640

690

2,360

945

371

58.0

60.0

640

705

533

Annual peak discharge, from highest to lowest, and corresponding gage height

1950

1948

1979

1974

1955

1969

1965

1966

1967

1956

1971

1962

1987

1970

'1882

April 18

April 19

April 20

April 16

April 2

April 12

April 12

March 2 1

March 3 1

April 21

April 10

April 19

April 4

April 9

April

11.80

11.80

8.93

7.79

8.56

7.67

7.48

7.82

7.22

6.63

5.84

6.68

6.91

7.04

-

16,600

11,500

6,730

4,580

4,200

3,960

3,710

3,100

3,070

2,930

2,460

2,400

2,360

2,220

2,200

1972

1960

1949

'1897

! 1907

! 1916

1975

1978

1976

1964

1982

1947

1946

1988

1953

March 17

April 6

April 7

April

April

April

April 15

March 3 1

March 3 1

June 2 1

July 26

March 25

March 22

May 29

June 4

5.96

5.60

8.19

--

6.73

6.52

7.03

4.31

4.07

4.12

-

3.71

3.53

2,120

2,050

2,020

1,850

1,750

1,600

1,600

1,600

1,500

1,460

1,140

1,100

1,000

945

910

201
05085000 FOREST RIVER AT MINTO, ND-Continued

Annual peak discharge and corresponding gage height-Continued

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ffts)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, from highest to lowest, and corresponding gage height Continued

1951 

1983 

1993 

1986

1944 

1985

1992

1994 

1958

1957 

1984 

1954 

1989

April5 

March 15 

July 28 

March 19

April 10 

March 14

March 8

March 26 

June 10

March 23 

March 26 

June 16 

April 18

3.60 

3.52 

3.70 

3.40

5.00 

3.39

3.34

2.72

2.72 

2.77 

2.61 

2.49

900 

820 

705 

690

650 

640

640

533 

463

461 

394 

391 

371

1952 

1959 

1968 

1945

1963 

1973

1981

1980 

1961

1977 

1991 

1990

April 2 

April 2 

March 27 

March 27

March 24 

June 19

June 28

April 1 

March 22

April 10 

April 4 

April 15

2.78 

2.45 

2.31 

2.11

2.54 

1.93

2.04

2.01 

1.90

1.58 

1.54 

1.56

370 

338 

315 

250

250 

208

176

167 

147

77,0 

60.0 

58.0

Determined by U.S. Army Corps of Engineers; not used in statistics.

202
E02

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a
05085000 FOREST RIVER AT MINTO, ND-Continued

Monthly and annual mean discharges, in cubic feet per second-Continued

[Data were not rounded in accordance with U.S. Geological Survey publication standards; , no data]

Year

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

Oct.

5.48

8.14

5.34

20.5

59.1

9.15

3.94

18.5

20.1

12.1

5.20

1.18

0

11.5

2.71

20.7

Nov.

3.07

8.25

10.4

11.7

23.6

15.0

3.60

21.3

10.9

11.1

3.20

1.73

0.971

10.3

5.38

17.2

Dec.

2.12

4.35

8.19

8.35

13.4

3.53

1.56

8.60

8.71

11.4

1.10

0.291

0.831

8.67

3.61

11.1

Jan.

2.00

1.04

4.10

1.54

9.66

0.784

0.121

6.37

9.65

6.32

1.14

0

0

7.14

1.58

6.19

Feb.

1.35

1.33

17.3

0.301

12.5

4.48

0.001

5.09

7.31

0.674

1.10

0

0

5.98

2.74

4.56

March

1.00

8.16

33.3

33.6

236.9

53.3

175.4

190.0

122.3

40.0

1.00

0.600

2.87

186.7

13.1

153.1

April

1,189

70.2

38.8

329.2

197.3

89.0

63.7

113.1

848.6

98.7

90.6

26.4

23.0

60.7

97.6

164.7

May

363.0

12.6

15.2

63.0

52.5

26.7

31.2

86.2

81.9

70.7

30.9

11.2

14.0

24.0

23.7

52.5

June

63.6

7.33

21.5

60.0

32.6

26.0

26.5

16.2

28.6

30.0

8.74

8.28

4.21

15.0

21.8

86.3

July

63.4

1.87

12.3

235.8

18.7

9.92

5.25

60.1

27.3

4.73

2.32

2.75

14.5

6.80

132.6

64.8
05087500 MIDDLE RIVER AT ARGYLE, MN

LOCATION.--Lat 48°20'25", long 96°48'58", in IS^NW1 ^ sec. 15, T.156 N., R.48 W., Marshall 

County, Hydrologic Unit 09020309, on left bank 30 ft upstream of bridge on County Highway 4 in 

Argyle and 14 mi upstream from mouth.

DRAINAGE AREA.-265 mi2 .

PERIOD OF RECORD.-March to September 1945, October 1950 to September 1981, February 1982 to 

current year. Monthly discharge only for some periods, published in WSP 1728. October 1981 to 

January 1982, operated as a high-flow partial-record station.

GAGE.-- Water-stage recorder. Datum of gage is 828.53 ft above mean sea level. Prior to Nov. 8, 1951, 

nonrecording gage and Nov. 8, 195 1, to Sept. 1 8, 1952, water-stage recorder at site 800 ft downstream 

at datum 1 .0 ft higher. Sept. 19, 1952, to June 28, 1982, recording gage at site 800 ft downstream at 

present datum. June 29, 1982, to Sept. 20, 1983, nonrecording gage at present site and datum.

EXTREMES FOR PERIOD OF RECORD. --Maximum discharge, 4,260 ft3 /s, July 3, 1975, gage height, 

16.59 ft, present datum; no flow at times.

EXTREMES OUTSIDE PERIOD OF RECORD.-Flood of April 1950 reached a stage of 15.25 ft present 

datum, site then in use, from floodmarks.

Annual mean discharge

180

o

L1J 

CO

DC 

L1J 

0.

140

120

L1J

O

2 80

Llf 

O 

DC 60

O

CO 40

Q

20

I I I I I I I I I I i I I I I I I I I

I I I I I I I I I I I I I I li i

GO 00 GO 00 O)

O'«-iO) O) O) O)

COh^r^GOOOO)O)O 

inoinoinomo

O)O)O)O)O)O)O)O

205
05087500 MIDDLE RIVER AT ARGYLE, MN-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence]

Month

Maximum

Discharge **«***' 

* s' occurrence

October 94.1 1983

November 33.4 1957

December 15.8 1983

January 4.65 1983

February 3.32 1983

March 217 1983

April 747 1966

May 330 1970

June 660 1970

July 688 1975

August 264 1993

September 272 1993

Annual 112 1966

1,000 

500

0 20°

o 1 °o

Otj | CQ

CO

CC 

UJ 20

UJ

u- 5 

O

§ 2 

O

Z 1

CC

^ 0.2

CO 0.1 

0 

0.05

0.02

0.01,

i

: ' ' | i i i i | i i i i i i

: 

r 

-

'-

-

.

-

-

, . i ,,,, i ,,,,,,

> 5 10

Minimum Mean

n««^h«r«a Water year ni.M,«w. Standard Coeffi- Percentage

mS of X deviatlon cientof ofannuai 

1 ' occurrence l ' (ft8/*) variation discharge

0 m 8.96 19.5 2.18 1.93

0 m 5.18 7.72 1.49 1.12

0 m 2.33 3.09 1.33 0.50

0 m 1.02 1.22 1.21 0.22

0 m 0.750 0.91 1.21 0.16

0 m 25.1 43.5 1.73 5.42

0.197 1991 200 184 0.92 43.0

2.12 1981 70.0 82.0 1.17 15.1

0.366 1973 70.0 129 1.84 15.1

0 1961 54.1 116 2.15 11.7

0 1961 11.0 39.6 3.60 2.36

0 m 16.3 50.4 3.09 3.51

1.60 1977 38.5 29.6 0.77 100

Annual flow duration

1 1 1 1 i i i i | i i 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 i i | i i i i | i i i i | iii | i i .

-

-

~

 j

 j

*

 J

. , , i ,, i i i , , , , i , , ,, i , ,. , i , , i . i i , i i i . i , i i , i . i , i

20 30 40 50 60 70 80 90 95 98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

206
05087500 MIDDLE RIVER AT ARGYLE, MN-Continued

Monthly and annual flow duration, in cubic feet per second

8

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0.03

0.12

0.27

0.39

0.57

0.70

0.70

1.00

1.20

1.50

1.80

2.20

2.70

3.90

Feb.

0

0

0

0

0

0

0.06

0.09

0.18

0.38

0.54

0.65

0.78

1.10

1.10

1.30

1.60

1.90

2.80

March

0

0

0

0

0.02

0.16

0.32

0.46

0.65

0.91

1.30

1.80

1.80

3.08

3.95

7.80

19.1

67.3

156

April

0.18

1.80

5.19

10.5

16.7

24.5

36.3

47.9

59.9

77.7

98.6

119

152

193

241

311

417

570

812

May

1.50

3.26

4.52

6.59

10.8

15.3

18.5

22.6

26.7

31.2

35.8

41.0

47.9

54.8

70.2

91.5

122

179

297

June

0.19

1.20

2.47

3.60

5.10

6.66

8.47

11.4

13.8

16.6

19.6

23.0

28.0

34.9

44.5

59.7

87.2

157

365

July

0

0.15

0.33

0.71

1.50

2.77

3.52

4.07

5.79

7.84

9.87

13.9

18.6

25.5

36.1

47.8

67.7

103

228

Aug.

0

0

0

0

0.07

0.10

0.19

0.27

0.37

0.71

0.99

1.40

1.90

3.42

4.64

7.75

12.6

18.9

37.8

Sept.

0

0

0

0

0

0

0

0.08

0.12

0.16

0.23

0.47

0.66

1.30

1.90

4.48

10.3

22.0

55.9

Oct.

0

0

0

0

0

0.09

0.12

0.16

0.22

0.29

0.40

0.74

1.80

2.50

5.58

10.7

14.7

23.2

52.4
05087500 MIDDLE RIVER AT ARGYLE, MN-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

Recurrence

. . ..... interval probability , . (years)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum

instantaneous

ng

104

171

300

771

1,680

2,380

3,310

4,000

4,680

5,340

6,170

3-day period 7-day period

16.4 15.0

62.9 54.6

117 99.5

229 190

652 520

1,390 1,080

1,860 1,440

2,390 1,830

2,710 2,080

2,980 2,280

3,200 2,450

ng ng

15-day period

11.9

39.8

70.2

130

349

732

990

1,290

1,480

1,650

1,800

ng

30-day period

8.78

27.3

46.9

84.7

221

465

635

839

978

1,100

1,220

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (f^/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 0

0.10 10 0

0.20 5 0

0.50 2 0

3 7

0 0

0 0

0 0

0 0

14 30 60

000

000

000

0 0.051 0.135

90

0

0

0

0.313

120 183

0 0

0 0

0.043 0.093

0.471 0.816

208
05087500 MIDDLE RIVER AT ARGYLE, MM-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0

0

0

0.246 0.249

0

0

0

! 0.252

0

0

0

0.255

0

0

0

7 14 30

March-April-May

0

0

0

0.317 0.353

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0.

0

0

0

154 0.284

0

0

0

0.411

0

0.015

0.086

0.879

0

0

0

0

0

0

0

0.472

0

0

0.057

3.67

September-October-November

0

0

0

0.026

0

0

0

0.070

0

0

0

0.209

Graphical interpretation.

209
05087500 MIDDLE RIVER AT ARGYLE, MN-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/3)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1945

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

March 30

April

April 9

April 11

March 3 1

June 18

June 9

July 11

September 7

July 9

Aprils

April 10

March 27

June 12

April 11

June 22

April 12

April 3

April 23

July 20

April 1 1

May 31

April 9

10.80

15.25

11.75

9.89

6.65

-

9.87

13.18

10.73

11.38

11.23

12.60

6.77

14.12

11.28

12.40

15.29

16.00

13.41

12.87

15.92

14.82

11.74

939

2,790

1,220

612

112

128

527

1,390

734

846

570

903

135

1,620

825

900

2,590

1,820

1,320

1,120

2,530

2,200

773

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

April 17

March 15

April 23

July 3

April 3

May 28

April 10

April 20

April 9

July 3

April 18

March 9

June 12

June 29

March 3 1

March 28

June 1

April 18

April 4

JulyS

March 9

September 3

September 19

10.12

5.10

14.65

16.59

10.21

2.50

14.45

15.29

6.91

3.97

9.96

14.17

9.10

12.58

13.43

11.78

7.21

15.25

4.86

-

9.87

14.18

11.30

729

93.0

2,070

4,260

631

24.0

1,320

2,140

357

107

711

1,020

513

939

1,040

550

357

1,550

60.0

87.0

350

1,180

707

Annual peak discharge, from highest to lowest, and corresponding gage height

1975

1950

1965

1969

1970

1979

1974

1966

1962

1989

1956

1967

1978

1951

1993

1968

1986

1983

1945

July 3

April

April 12

April 11

May 31

April 20

April 23

April 3

June 12

April 18

July 1 1

April 23

April 10

April 9

September 3

July 20

March 3 1

March 9

March 30

16.59

15.25

15.29

15.92

14.82

15.29

14.65

16.00

14.12

15.25

13.18

13.41

14.45

11.75

14.18

12.87

13.43

14.17

10.80

4,260

2,790

2,590

2,530

2,200

2,140

2,070

1,820

1,620

1,550

1,390

1,320

,320

,220

,180

,120

,040

,020

939

1985

1960

1964

1958

1963

1971

1957

1972

1982

1994

1976

1952

1959

1987

1955

1984

1980

1988

1992

June 29

April 10

June 22

July 9

April 1 1

April 9

September 7

April 17

April 18

September 19

April 3

April 1 1

Aprils

March 28

June 9

June 12

April 9

June 1

March 9

12.58

12.60

12.40

11.38

11.28

11.74

10.73

10.12

9.96

11.30

10.21

9.89

11.23

11.78

9.87

9.10

6.91

7.21

9.87

939

903

900

846

825

773

734

729

711

707

631

612

570

550

527

513

357

357

350

210
05087500 MIDDLE RIVER AT ARGYLE, MN-Continued

Annual peak discharge and corresponding gage height-Continued

[--, no data]

Water

year

Date

Gage

height

(feet)

Peak

discharge

(tf/s)

Water

year

Date

Gage

height

(feet)

Peak

discharge

(ft3/s)

Annual peak discharge, from highest to lowest, and corresponding gage height Continued

1961 March 27 6.77 135 1973 March 15 5.10 93.0

1954 June 18 - 128 1991 July 8 -- 87.0

1953 March 31 6.65 112 1990 April 4 4.86 60.0

1981 July 3 3.97 107 1977 May 28 2.50 24.0

211
05087500 MIDDLE RIVER AT ARGYLE, MN--Continued

Monthly and annual mean discharges, in cubic feet per second

[Data were not rounded in accordance with U.S. Geological Survey publication standards; , no data]

Year

1945

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

Oct.

11.0

11.9

0.035

0

0.052

0.439

1.79

40.6

0.271

12.5

0.316

8.23

2.63

0.013

27.0

64.5

5.05

0.535

23.3

0.174

2.07

0.703

0.005

1.91

0.349

1.17

0

0.079

0.395

0.295

0.302

94.1

4.17

Nov.

7.79

4.93

0.503

0

0.143

0.007

33.4

23.5

0.550

10.4

0.423

2.93

4.19

0.177

12.9

21.6

1.93

1.63

13.0

0.423

4.52

7.67

0.173

2.43

0.610

4.32

0

4.46

1.57

1.63

0.075

24.0

6.90

Dec.

5.11

3.61

0.052

0

0.094

0.129

5.50

7.41

0.645

4.31

0.574

0.923

3.48

0.032

3.94

8.54

0.913

0.600

5.41

0.481

2.27

2.82

0.003

0.046

0.653

1.70

0

4.04

1.24

1.33

0.051

15.8

3.99

Jan.

..

3.21

1.03

0

0

0.026

0.045

1.94

2.50

0.200

2.10

0.326

0.377

0.406

0

2.56

4.05

0.652

0

0.900

0.358

1.55

0.361

0

0.105

0.795

1.69

0

1.24

0.871

1.27

0.014

_

4.65

1.64

Feb.

2.75

1.93

0

0

0

0

1.56

1.70

0

1.11

0.193

0.129

0

0

1.17

1.92

0.529

0.131

1.65

0.036

1.44

0.059

0

0.056

0.380

1.80

0

0.831

0.615

1.04

0.506

__

3.32

1.05

March

4.16

3.42

15.7

0

0

0

39.8

3.76

1.61

1.68

23.0

0

18.7

0

1.37

93.0

15.6

26.0

2.97

0

6.17

20.6

34.8

0

1.24

21.1

0.745

13.4

1.42

2.00

5.51

9.36

217.1

57.7

April

289.0

336.9

177.5

33.2

51.8

70.7

132.3

68.6

12.2

209.0

307.1

27.3

244.9

188.6

73.8

577.3

747.1

472.5

19.2

552.6

302.6

162.0

211.8

6.42

426.2

224.5

189.1

10.3

479.2

611.2

112.6

5.38

284.1

155.7

112.8

May

73.7

72.0

19.6

22.0

39.8

23.9

131.8

42.0

5.32

29.9

49.9

10.8

298.9

41.7

44.6

158.8

231.9

236.2

4.04

63.2

330.3

27.8

36.0

3.30

191.7

125.8

16.3

4.38

116.7

126.8

6.72

2.12

102.3

56.7

22.4

June

26.5

7.18

3.50

16.9

50.7

137.4

26.9

64.7

4.85

15.7

49.2

0.773

481.9

30.6

306.1

102.1

32.7

21.0

232.7

47.1

659.8

12.1

17.4

0.366

45.0

46.0

3.29

3.25

48.9

47.7

0.793

8.40

16.2

61.3

90.7

July

15.0

1.53

6.03

3.45

6.26

8.82

312.6

87.6

186.7

9.97

10.4

0

43.9

6.88

40.4

92.2

107.2

4.91

205.0

11.5

25.4

3.39

2.22

0.001

3.01

687.7

1.30

0.222

61.3

12.3

0.018

21.3

52.3

19.7

3.09
05087500 MIDDLE RIVER AT ARGYLE, MN-Continued

Monthly and annual mean discharges, in cubic feet per second-Continued

[Data were not rounded in accordance with U.S. Geological Survey publication standards; --, no data]

Year

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

Oct.

0.256

52.5

0.478

0.065

0

0

0

0.317

1.23

14.4

Nov.

0.479

9.39

0.829

0.490

0

0.016

0

1.54

0.465

10.7

Dec.

0.341

3.86

0.600

0.307

0.019

0

0

2.22

1.25

5.89

Jan.

0.140

3.71

0.600

0.088

0.010

0

0

0.842

0.754

2.67

Feb.

0.142

3.30

0.600

0.060

0.014

0

0.014

0.440

0.691

1.12

March

68.7

124.8

118.2

0.351

0.022

9.62

0.084

85.6

9.01

47.9

April

83.2

314.3

117.1

57.3

231.1

13.3

0.197

102.8

120.4

53.3

May

41.9

185.2

19.6

12.0

28.4

2.74

4.63

38.3

16.1

30.7

June

253.5

34.4

9.06

26.9

28.1

4.69

3.65

5.20

51.6

10.9

July

74.5

2.79

1.57

0.855

2.95

2.25

40.6

12.2

97.9

145.6
05088000 SOUTH BRANCH PARK RIVER NEAR PARK RIVER, ND

LOCATION.--Lat 48°24'50", long 97°51'40" (revised), on line between sec.15 and 16, T.157 N., 

R.56 W., Walsh County, Hydrologic Unit 09020310, at bridge on State Highway 32, half a mile 

upstream from small tributary and 4.5 miles northwest of town of Park River.

DRAINAGE AREA.--214 mi2 .

PERIOD OF RECORD.-October 1939 to September 1950. October 1939 to March 1940 estimated on 

basis of weather records and records for Park River at Grafton, North Dakota.

GAGE. Chain gage.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 11,000 ft3/s, Apr. 18, 1948, gage 

height, 11.80 ft, from rating curve extended above 6,600 ft3/s; no flow at times most years.

Annual mean discharge

zuu 

180

Q

PER SECOIV 1 §

LU 120

LU 

LL

m

3

Z 80

LU* 

L? 60

o

OT 40

Q

20

o i 

i

i i i i i i i i i i i i i

-

-

-

-

_

i i i i i i i i i i i i ml

DLOOLOOLOOLOOLOOLOOLO oooo5O5QO^~T~c\jc\jcocO2±2± 

o oo oo oo o) o) o) o) o) o) o) o) O) O)

i i i i i i i i i i

-

-

-

-

-

-

_

.

i I i i i i i I I

OLOOLOOLOOLOOLOC 

o)O)9So)O)O)O)O)O)O)<

214
05088000 SOUTH BRANCH PARK RIVER NEAR PARK RIVER, ND-Continued

Statistics of monthly and annual mean dischargesvariation

[m, more than 1 year of occurrence]

Month

Maximum Minimum

Discharge *«V Discharge W***" Discharge 

<"*» occurrence <«3"> occurrence ^*>

October 19.6 1942 0 m 2.20

November 3.74 1942 0 m 0.870

December 2.78 1945 0 m 0.490

January 0.274 1945 0 m 0.090

February 0.200 m 0 m 0.070

March 181 1945 0 m 41.7

April 642 1950 17.7 m 208

May 639 1950 2.28 1940 68.3

June 56.2 1943 0.180 1940 11.2

July 23.9 1947 0.019 1940 6.07

August 21.7 1948 0.042 m 3.13

September 17.4 1941 0.023 1940 2.76

Annual 109 1950 1.67 1940 28.7

100 

70

§840 

30

i 20

O

UJ 10

eo 7 

cc c

LU ? 

0. 4

LU 3

LU 2 

LL

1 0.7 

0 0.5 

Z 0.4 

~ 0.3 LU O 0.2 

CC

X 0.1 

^0.07

5 §:§i

0.03

0.02 

n m

Annual flow duration

i . ^ i i i i | 1 1 1 1 1 1 1 1 1 1 i i i i i i i i 1 1 1 1 1 1 1 1 1 1 1 1 1 i i i | i i i i

;

H. 

r 

r 

r 

r

i , , , , i , , , , , , , 1 1 1 i , i , i , , , , i , , , i i i , i , i , , , , i , , , i

Mean

Standard Coeffidevlation clent of 

(ft3/s) variation

5.79 2.63

1.43 1.65

0.86 1.76

0.09 1.06

0.08 1.08

59.7 1.43

228 1.10

190 2.78

15.9 1.42

8.99 1.48

6.38 2.04

5.23 1.89

30.5 1.07

i , , , , | . . . i

i i i , . i , , , i

Percentage 

of annual 

discharge

0.64

0.25

0.14

0.03

0.02

12.1

60.3

19.8

3.24

1.76

0.91

0.80

100

-I

~

-i

1

-I

:

1

10 20 30 40 50 60 70 80

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

90 95 98

215
05088000 SOUTH BRANCH PARK RIVER NEAR PARK RIVER, ND-Conti

Monthly and annual flow duration, in cubic feet per second

0>

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0

0

0.10

0.10

0.10

0.10

0.10

0.10

0.10

0.20

0.20

0.20

0.20

Feb.

0

0

0

0

0

0

0

0

0

0.10

0.10

0.10

0.10

0.10

0.10

0.10

0.10

0.10

0.10

March

0

0

0

0

0

0

0.10

0.10

0.10

0.10

0.10

0.17

0.17

0.63

3.00

10.0

89.0

164

301

April

0.19

1.40

3.90

5.60

8.37

11.8

15.1

17.8

22.6

28.0

34.8

45.2

63.2

99.1

141

180

274

562

1,140

May

1.80

2.30

2.30

2.30

3.00

3.00

4.56

5.16

5.67

6.70

8.22

9.25

10.8

13.0

15.3

22.0

31.9

62.9

235

June

0

0.39

0.62

0.98

1.50

1.90

2.40

2.40

3.10

4.51

6.02

6.81

8.10

9.79

11.0

13.9

17.0

24.0

50.0

July

0

0

0.10

0.10

0.20

0.20

0.25

0.25

0.49

0.61

0.96

1.50

1.90

2.40

4.18

5.47

6.79

14.4

23.0

Aug.

0

0

0.10

0.10

0.10

0.10

0.18

0.18

0.18

0.28

0.34

0.42

0.51

0.77

1.40

2.20

4.00

9.72

13.8

Sept.

0

0.10

0.10

0.10

0.10

0.10

0.18

0.18

0.18

0.18

0.18

0.18

0.33

0.50

0.74

1.30

2.50

5.67

11.5

Oct.

0

0

0

0.10

0.19

0.19

0.19

0.19

0.19

0.19

0.28

0.28

0.35

0.43

0.66

1.00

1.50

2.80

8.38
05088000 SOUTH BRANCH PARK RIVER NEAR PARK RIVER, ND-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

Recurrence

probability , . K * (years)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum

instantaneous 

(ft3/s)

40.6

110

186

346

1,100

3,380

5,980

10,800

15,900

22,200

30,100

43,400

3-day period 7-day period

48.5 29.1

98.1 65.5

144 101

233 168

600 446

1,620 1,160

2,760 1,910

4,950 3,240

7,280 4,530

10,300 6,130

14,300 8,070

ng ng

15-day period 30-day period

14.7 7.85

40.0 21.7

65.7 36.3

116 65.6

311 187

737 482

1,100 758

1,640 1,190

2,080 1,570

2,550 2,000

3,030 2,460

ng ng

Probability of occurrence of annual low discharges

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 ng

0.10 10 ng

0.20 5 ng

0.50 2 ng

3 7

ng 0

ng 0

ng 0

ng 0

14 30 60

000

000

000

0.034 0.054 0.087

90 120 183

000

000

0 0.032 0.093

0.109 0-.125 0.234

217
05088000 SOUTH BRANCH PARK RIVER NEAR PARK RIVER, ND-Continued

Probability of occurrence of seasonal low discharges

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

ng 0

ng 0

ng 0

ng 0.084

0

0

0

^.087

0

0

0

^.090

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0 0

0 0

0 0

0.103 0.115

0

0.004

0.023

0.147

0

0.025

0.071

0.292

1 7 14 30

March-April-May

0 0

0 0

0 0

0.088 1 QA25

0

0

0

1 0.760

0

0

0

1,10

September-October-November

0 0

0 0

0 0.050

0.102 0.117

0

0

0.087

0.121

0

0

0.114

0.207

'Graphical interpretation.

218
05088000 SOUTH BRANCH PARK RIVER NEAR PARK RIVER, ND-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(tf/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1940

1941

1942

1943

1944

1945

April 19

April 10

April 4

March 24

April 11

March 14

3.16

8.85

-

7.60

--

6.60

171

3,340

1,880

900

170

800

1946

1947

1948

1949

1950

March 22

July 25

April 18

April 9

April 19

5.66

4.30

11.80

5.93

10.10

400

518

11,000

1,200

5,970

Annual peak discharge, from highest to lowest, and corresponding gage height

1948

1950

1941

1942

1949

1943

April 18

April 19

April 10

April 4

April 9

March 24

11.80

10.10

8.85

-

5.93

7.60

11,000

5,970

3,340

1,880

1,200

900

1945

1947

1946

1940

1944

March 14

July 25

March 22

April 19

April 1 1

6.60

4.30

5.66

3.16

--

800

518

400

171

170

219
05088000 SOUTH BRANCH PARK RIVER NEAR PARK RIVER, ND-Cont

Monthly and annual mean discharges, in cubic feet per second 

[Data were not rounded in accordance with U.S. Geological Survey publication standards]

Year

1940

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

Oct.

0

0

19.6

0.213

0.261

0.358

0.181

0.374

1.55

0.381

1.28

Nov.

0

0

3.74

0.180

0.277

3.70

0.150

0.170

0.947

0.207

0.190

Dec.

0

0

1.40

0.200

0.071

2.78

0.100

0.100

0.461

0.139

0.113

Jan.

0

0

0

0.200

0

0.274

0.100

0.032

0.148

0.100

0.100

Feb.

0

0

0

0.200

0

0.200

0.100

0

0.100

0.100

0.100

March

0

0

58.9

96.1

0

181.0

92.1

29.4

0.303

0.113

1.04

April

17.7

332.1

246.0

63.8

34.0

23.4

17.7

80.0

578.5

251.1

641.8

May

2.28

5.77

16.0

7.98

2.51

11.1

3.65

3.94

45.8

13.0

639.2

June

0.180

4.01

5.60

56.2

1.82

6.75

2.73

15.8

11.6

2.26

16.0

July

0.019

0.594

0.794

14.7

0.245

2.41

0.113

23.9

20.2

0.368

3.44
05089000 SOUTH BRANCH PARK RIVER BELOW HOMME DAM, ND

LOCATION.--Lat 48°24'07", long 97°46'55", in SEV4 sec. 19, T.157 N., R.55 W., Walsh County, 

Hydrologic Unit 09020310, on right bank 0.5 mi downstream from Honune Dam, and 2 mi west of 

town of Park River.

DRAINAGE AREA.--226 mi2 .

PERIOD OF RECORD.-October 1949 to September 1994. Monthly discharge only for October and 

November 1949, published in WSP 1308.

GAGE. Water-stage recorder. Datum of gage is 1,000.00 ft above sea level.

EXTREMES FOR PERIOD OF RECORD.«Maximum discharge, about 13,000 ft3/s, Apr. 24, 1950, gage 

height, 37.52 ft, dam failure; no flow at times.

Annual mean discharge

£UU

180

Q

8 160

LU

£140

LU

O.

LU 120

LU

LL

0

Z 80

LU

EC 60

X

0

CO 40

Q

20

n

I I I I I I I I I I I I I

-

-

-

"

-

-

~

-

-

I I I I I I I I I I I I I 1,1 1,

I

1 1

1 1

1

ll

1

1

1

ill

1 1

-

-

-

"

-

-

-

-

1 ll

.

-

.

-

-

-

1

CO CO O) O) O O T- i- O5 O) O O) 8 3

221
05089000 SOUTH BRANCH PARK RIVER BELOW HOMME DAM, ND-ContJnued

Statistics of monthly and annual mean discharges

Maximum

~. . Water year Discharge

occurrence

October 25.7 1983

November 16.0 1985

December 12.2 1983

January 31.2 1974

February 28.6 1981

March 234 1966

April 749 1950

May 706 1950

June 182 1964

July 500 1993

August 194 1993

September 36.2 1951

Annual 124.5 1950

 inn i i i i i i i i i i i i i . . i

\\j\j . . i i i i i i | i i i i i i i 

70 '- *

50 r 40 - 

30 - § 20 r

UJ 10 r

W 7 r

S ^

S 2r 

u_ :

 1 i~

D 0.7 '- 

0 0.5 r 

Z 0.4 r 

~ 0.3 7

0 0.2 r 

CC :

X 0.1 r 

CO 0-07 r 

0 0.05 r 0.04 - 

0.03 7

0.02 r

n M i i 1 i i i i 1 i i i i i i i i

Minimum Mean

_. . Water year _. , Standard Coeffi- Discharqe / Discharge . . .. . . . ftt3/ \ m3/ \ deviation cientof 

( ' occurrence ( ' (fl3/s) variation

0 1950 3.97 5.98 1.50

0.015 1989 3.59 3.34 0.93

0.010 1990 4.21 3.18 0.75

0 1990 5.39 5.06 0.94

0 1990 5.75 5.49 0.95

0.059 1991 31.8 48.4 1.52

0.608 1977 144 174 1.20

0.727 1977 48.1 114 2.37

0.776 1989 19.5 30.2 1.54

0.028 1990 21.6 75.1 3.48

0 1990 7.34 28.6 3.90

0 1990 5.28 8.17 1.55

0.516 1990 25.0 24.0 0.96

Annual flow duration

. | . i . . | . i . . | . . i . | . . . . | . i . . | . . i . | i . . i | ..I |

* 

 0

* 0

 

, i , , , , i , , , , i , , , , i , , , , i , , i i i , , , , i , , . , i ... i

Percentage 

of annual 

discharge

1.32

1.19

1.40

1.79

1.91

10.6

47.9

16.0

6.49

7.18

2.44

1.76

100

.;

-_

-_

-.

-.

-.

-_

i

-.

;

10 20 30 40 50 60 70 80

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

90 95

222
05089000 SOUTH BRANCH PARK RIVER BELOW HOMME DAM, ND-Cont

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0.04

0.48

0.48

1.00

1.40

1.40

1.80

2.30

3.00

4.13

4.42

4.70

5.25

5.72

6.88

7.78

8.68

12.4

16.5

Feb.

0.08

0.40

0.50

0.50

1.00

1.30

1.60

2.00

2.50

3.20

4.27

4.86

5.43

5.99

7.22

10.0

11.7

13.6

17.6

March

0.07

0.26

0.50

0.96

1.30

1.30

1.80

3.20

4.14

5.08

5.51

7.49

10.3

13.5

17.8

27.6

40.9

63.1

166

April

0.40

1.10

2.20

3.52

4.69

5.25

7.91

12.0

16.4

22.8

29.9

39.2

54.1

72.7

105

142

209

332

713

May

0.50

0.96

1.30

1.80

3.48

4.38

5.55

7.36

8.43

10.8

13.3

15.7

18.2

22.1

27.0

34.1

46.8

76.3

164

June

0.56

1.00

1.40

1.80

2.50

3.31

3.86

4.66

5.41

6.81

7.74

8.91

10.0

13.7

16.6

19.6

25.1

36.0

63.8

July

0.10

0.44

0.64

0.94

0.94

1.40

1.40

2.00

2.00

3.20

3.71

4.84

5.86

6.97

8.12

11.7

15.6

23.5

52.8

Aug.

0.04

0.07

0.19

0.37

0.51

0.51

0.71

0.99

0.99

1.40

1.40

1.90

1.90

2.92

3.47

4.21

5.81

7.56

15.8

Sept.

0

0.04

0.09

0.17

0.51

0.67

0.67

0.89

0.89

1.20

1.60

1.60

2.10

2.70

2.70

4.53

5.57

11.5

24 A

Oct.

0

0.05

0.12

0.21

0.37

0.49

0.65

0.65

0.86

1.10

1.10

1.50

1.50

2.00

2.60

4.63

6.35

10.4

16.7
05089000 SOUTH BRANCH PARK RIVER BELOW HOMME DAM, ND-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

<ft3/s)

_ . Recurrence Exceedance . . . 

. . .,.. interval probability . . 

r ' (years)

0.99

0.95

0.90

0.80

0.50

0.20

0.10

0.04

0.02

0.01

0.005

0.002

1.01

1.05

1.11

1.25

2

5

10

25

50

100

200

500

Maximum 

instantaneous 

(tf/s)

5.60

27.3

59.1

141

614

2,110

3,670

6,220

8,470

10,900

13,600

17,300

3-day period 7-day period

2.35 2.08

13.6 11.0

31.8 24.5

81.5 60.0

388 267

1,370 903

2,380 1,540

3,970 2,540

5,300 3,380

6,700 4,270

8,150 5,180

ng ng

15-day period

1.84

8.58

18.1

41.9

171

544

910

1,480

1,950

2,460

2,980

ng

30-day period

1.56

6.43

12.9

28.2

108

337

568

936

1,260

1,610

1,990

ng

Probability of occurrence of annual low discharges

Non- Recurexceed- rence

ance interprob- val 

ability (years)

0.05 20

0.10 10

0.20 5

0.50 2

1

0

0

0.033

0.148

3 7

0 0

0 0.006

0.037 0.054

0.174 0.250

Minimum mean discharge (f^/s)

Number of consecutive days

14 30 60

0.003 0.005 '0.008

0.026 0.044 0.076

0.075 0.129 0.253

0.312 0.525 1.04

90

0.011

0.150

0.448

1.59

120 183

0.041 0.167

0.178 0.425

0.598 1.06

2.27 3.29

'Graphical interpretation.

224
05089000 SOUTH BRANCH PARK RIVER BELOW HOMME DAM, ND-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

0.005

0.055

0.177

0.874

0.029

0.085

0.235

1.06

0.031

0.095

0.270

1.23

0.052

0.170

0.493

1.99

June- July- August

0.05

0.10

0.20

0.50

20

10

5

2

0

0.030

0.094

0.391

0.012

0.071

0.182

0.700

0.024

0.113

0.267

0.928

0.078

0.277

0.565

1.64

0.035

0.084

0.208

0.910

7 14 30

March-April-May

0.044

0.124

0.337

1.62

0.072

0.188

0.481

2.14

0.160

0.396

1.07

5.26

September-October-November

0

0

0.049

0.256

0

0.006

0.067

0.374

0.004

0.034

0.102

0.462

0.006

0.064

0.191

0.802

225
05089000 SOUTH BRANCH PARK RIVER BELOW HOMME DAM, ND-Continued

Annual peak discharge and corresponding gage height

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/*)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

April 24

April 4

September 10

August 28

June 14

April 1

April 25

March 23

March 21

April 3

April 12

April 26

April 18

June 25

June 19

April 1 1

April 1

May 7

March 26

April 1 1

AprilS

April 9

March 17

37.52

28.42

24.75

23.64

25.73

28.50

29.16

25.54

23.98

25.48

29.43

23.91

27.99

24.90

28.71

30.68

27.81

28.37

24.69

29.45

26.63

28.99

27.20

13,000

900

106

17.0

386

1,600

2,000

324

58.0

368

2,580

86.0

1,780

316

2,300

3,100

1,670

1,950

233

2,900

980

2,850

1,210

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

March 24

May 20

July 1

April 2

September 17

April 7

April 20

May 28

April 2

July 24

March 6

March 25

March 19

March 23

April 6

April 3

April 24

AprilS

July 6

March 29

July 28

March 22

23.68

29.12

27.19

27.08

23.53

28.56

31.49

24.67

25.49

27.40

27.10

24.83

25.71

25.90

28.36

23.39

23.45

23.46

23.56

25.62

29.53

25.62

101

2,610

1,300

1,240

12.0

2,170

5,380

211

429

1,290

1,200

244

473

620

2,000

29.0

61.0

24.0

32.0

933

4,210

500

Annual peak discharge, from highest to lowest, and corresponding gage height

1950

1979

1993

1965

1969

1971

1974

1960

1964

1978

1956

1987

1967

1962

1966

1955

1975

1982

1976

1972

1983

April 24

April 20

July 28

April 11

April 11

April 9

May 20

April 12

June 19

April?

April 25

April 6

May 7

April 18

April 1

April 1

July 1

July 24

April 2

March 17

March 6

37.52

31.49

29.53

30.68

29.45

28.99

29.12

29.43

28.71

28.56

29.16

28.36

28.37

27.99

27.81

28.50

27.19

27.40

27.08

27.20

27.10

13,000

5,380

4,210

3,100

2,900

2,850

2,610

2,580

2,300

2,170

2,000

2,000

1,950

1,780

1,670

1,600

1,300

1,290

1,240

1,210

1,200

1970

1992

1951

1986

1994

1985

1981

1954

1959

1957

1963

1984

1968

1980

1952

1973

1961

1989

1958

1991

1988

AprilS

March 29

April 4

March 23

March 22

March 19

April 2

June 14

April 3

March 23

June 25

March 25

March 26

May 28

September 10

March 24

April 26

April 24

March 21

July 6

April 3

26.63

25.62

28.42

25.90

25.62

25.71

25.49

25.73

25.48

25.54

24.90

24.83

24.69

24.67

24.75

23.68

23.91

23.45

23.98

23.56

23.39

980

933

900

620

500

473

429

386

368

324

316

244

233

211

106

101

86.0

61.0

58.0

32.0

29.0

226
05089000 SOUTH BRANCH PARK RIVER BELOW HOMME DAM, ND-Continued

Annual peak discharge and corresponding gage height-Continued

Water Gage Peak Water Gage Peak Date height discharge Date height discharge

year_____________(feet) (ft3/s)___________year_____________(feet) (ft3/s)

Annual peak discharge, from highest to lowest, and corresponding gage height Continued

1990 AprilS 23.46 24.0 1977 September 17 23.53 12.0 

1953 August 28 23.64 17.0 _____ _____

227
05089000 SOUTH BRANCH PARK RIVER BELOW HOMME DAM, ND-Cont

Monthly and annual mean discharges, in cubic feet per second 

[Data were not rounded in accordance with U.S. Geological Survey publication standards]

Year

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

Oct.

0

1.37

20.4

0.677

1.78

5.90

0.729

4.44

1.87

4.49

1.08

0.910

0.929

3.14

4.16

0.823

22.0

2.33

2.41

3.23

2.41

2.36

4.96

0.557

3.78

2.08

2.05

1.03

1.80

1.31

0.655

9.93

1.77

25.7

0.332

Nov.

0.500

2.86

2.01

2.36

1.53

3.46

0.737

5.43

1.37

0.657

2.36

0.907

5.12

1.68

0.553

0.500

5.02

1.43

2.04

2.26

2.55

3.79

3.75

4.13

6.70

7.94

7.76

6.05

2.38

8.78

4.36

11.8

4.61

8.16

4.30

Dec.

0.445

1.86

2.00

4.07

1.75

2.00

1.86

1.47

5.52

10.5

0.542

0.448

2.33

0.990

1.25

1.34

4.19

7.95

5.80

4.95

7.99

5.72

2.61

6.85

7.85

9.61

4.84

8.43

5.76

4.82

3.37

10.0

5.37

12.2

5.07

Jan.

0.500

1.60

2.60

4.58

3.78

2.04

1.25

1.20

3.09

1.48

5.19

9.17

2.19

8.93

10.6

5.54

4.82

5.43

9.11

11.5

7.45

5.68

7.26

2.52

31.2

5.47

6.98

5.42

4.08

3.48

1.14

2.30

4.95

11.5

6.76

Feb.

0.589

1.60

1.47

4.41

2.27

2.45

1.74

12.5

3.56

0.679

3.77

0.457

3.21

9.85

2.09

9.80

10.4

7.94

2.98

13.1

6.03

5.88

13.6

12.8

8.12

3.72

7.73

5.51

4.60

3.11

0.453

28.6

3.27

12.0

0.614

March

2.21

8.13

0.297

2.96

2.79

8.58

28.8

29.0

3.55

1.02

7.68

0.252

25.9

6.37

1.64

22.1

234.1

83.4

28.1

13.0

4.93

19.4

124.0

23.2

11.7

4.65

32.7

5.64

5.53

5.01

0.243

55.5

36.3

76.0

29.5

April

749.3

93.7

1.30

1.73

2.46

159.2

341.3

15.5

2.94

84.2

391.8

4.77

224.9

5.48

70.8

283.0

200.7

215.1

12.8

355.4

170.8

335.0

118.1

6.15

424.8

86.4

188.2

0.608

336.5

620.0

30.0

39.9

168.6

115.1

24.7

May

705.8

9.76

5.96

0.852

3.52

19.6

137.3

9.85

1.18

11.7

16.2

1.46

37.4

2.93

18.7

60.0

154.7

182.5

14.6

16.4

43.9

13.7

12.0

5.24

275.1

42.4

5.81

0.727

27.0

96.5

13.6

10.4

26.3

20.2

6.88

June

21.3

3.42

1.05

2.42

70.8

18.6

68.5

4.30

2.21

3.30

7.75

1.19

51.9

47.1

181.5

21.4

22.7

7.19

16.9

11.9

8.44

16.8

2.22

3.50

21.0

5.98

46.3

1.65

8.22

11.8

17.2

40.4

23.3

26.2

4.18

July

6.80

0.961

1.79

0.706

9.67

6.01

10.8

1.43

1.71

6.12

2.02

3.64

4.76

6.97

30.4

11.6

57.1

2.22

5.01

3.31

4.03

22.7

1.84

1.70

3.88

57.6

4.78

1.73

3.08

19.4

0.918

20.0

92.3

5.26

2.69
05089000 SOUTH BRANCH PARK RIVER BELOW HOMME DAM, ND, MN-Co

Monthly and annual mean discharges, in cubic feet per second-Continued

[Data were not rounded in accordance with U.S. Geological Survey publication standards]

Year

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

Oct.

10.4

6.95

0.817

0.249

0.011

0.051

0.021

0.739

0.043

16.2

Nov.

16.0

4.40

0.740

0.156

0.015

0.096

0.077

3.81

0.037

6.27

Dec.

2.61

4.20

5.94

2.31

0.033

0.010

0.060

7.22

0.032

5.20

Jan.

2.86

7.92

6.52

5.69

0.077

0

0.042

6.56

1.76

10.3

Feb.

2.37

11.3

6.67

4.82

0.156

0

0.050

0.877

11.5

10.3

March

73.6

87.7

20.9

1.16

10.2

0.077

0.059

170.9

20.2

103.8

April

19.1

63.6

315.6

8.37

10.4

3.79

0.951

57.8

25.1

98.0

May

8.34

22.0

12.8

3.32

3.71

1.19

3.91

10.9

41.3

48.6

June

9.09

8.51

7.61

3.74

0.776

0.996

3.35

9.05

18.7

14.5

July

3.36

21.3

6.40

3.02

0.040

0.028

9.18

1.51

500.1

12.0
05089100 MIDDLE BRANCH PARK RIVER NEAR UNION, ND

LOCATION.~Lat 48°32'32", long 98°01'10", on north line of sec. 5, T.158 N., R.57 W., Walsh County, 

Hydrologic Unit 09020310, on left bank 150 ft downstream from bridge on county highway between 

Walsh and Cavalier counties, and 3.5 mi southwest of Union.

DRAINAGE AREA.-15.3 mi2 .

PERIOD OF RECORD.-October 1965 to September 1986. Seasonal records only since 1983.

GAGE. Water-stage recorder. Datum of gage is 1,495 ft above sea level, from topographic map.

EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 960 ft3/s, Apr. 20, 1979, gage height, 

6.16 ft, backwater from ice; maximum gage height, 7.51 ft, May 4, 1966, from floodmark, backwater 

from snowdrift; no flow for several months each year.

Annual mean discharge

£U

18

QNO03S CD

LU 

Q_

^ ~ 1 2

LU 

U_

I'0

0 

Z 8

LU 

CD e 

DC 6

5

2

n

I I I I i I I I I I I I I I I I I I

-

-

"

-

-

-

-

I I I 1 I I I I I I 1 I I I I I 1 II

I ill

-

-

"

-

-

-

-

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ir> o tf> o it)

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230
05089100 MIDDLE BRANCH PARK RIVER NEAR UNION, ND-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence]

Maximum Minimum

M th Discharge **«»" Discharge **«»"

Month (ft3/s) °f (ft3/s) Of 

x ' occurrence occurrence

October 1.45 1966 0.032 1968

November 0.539 1966 0.021 1977

December 0.164 1978 0 m

January 0.055 1978 0 m

February 2.91 1981 0 m

March 23.0 1972 0 m

April 60.0 1979 0.242 1973

May 17.8 1967 0.039 1973

June 6.12 1986 0.018 1973

July 5.46 1966 0.010 1973

August 0.351 1980 0.351 1980

September 1.31 1980 0 1984

Annual 5.35 1979 0.381 1977

Discharge 

(ft3/s)

0.260

0.120

0.030

0

0.170

3.95

14.6

2.46

1.13

0.950

0.120

0.160

2.18

Mean

Standard Coeffideviation cient of 

(ft3/s) variation

0.36 1.39

0.16 1.29

0.05 1.47

0.01 3.15

0.71 4.12

5.82 1.47

15.9 1.09

4.26 1.73

1.71 1.51

1.65 1.74

0.11 0.93

0.28 1.78

1.48 0.68

Percentage 

of annual 

discharge

1.09

0.51

0.14

0.02

0.71

16.5

60.9

10.3

4.73

3.95

0.50

0.66

100

Annual flow duration

10 

7

5

4

i 3

O

0 2

UJ

CO

cc

UJ 1

CLtD °'7

UJ 0.5 li _ . ^^ 0 4

om 0.3

O 0.2

z

8 0.1

< 0.07

O 0.05

CO 0.04

Q 0.03

0.02

i i | i .. i | ... i i . i . 1 1 ... i | .. . . | . i . . | ...

: 

-

-

~

-

I

-, ~_

- *

~

- 

'- " .

r 

'- 

- 

-

-

0.01 

, 1 , ... 1 ., ... . ... 1 .... 1 .... 1 .... 1 . i ,

2 5 10 20 30 40 50

, i , , , , i , , ,

60 70

i .... i . . . | .

i .... i . . . i .

80 90 95

-|

-

-

-

~

j

~

-

-

-

-

-

-

-

:

98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

231
05089100 MIDDLE BRANCH PARK RIVER NEAR UNION, ND-Continu

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.02

Feb.

0.05

0.10

0.15

0.21

0.26

0.31

0.36

0.41

0.46

0.52

0.57

0.62

0.67

0.72

0.77

0.82

0.88

0.93

0.98

March

0

0

0

0

0

0

0

0

0

0

0

0.06

0.44

0.79

1.90

2.50

4.82

8.39

17.2

April

0

0.13

0.17

0.23

0.40

0.54

0.72

0.96

1.30

1.70

3.09

3.92

4.94

6.27

8.97

12.6

18.4

30.0

60.0

May

0.04

0.06

0.08

0.11

0.11

0.15

0.15

0.20

0.20

0.27

0.36

0.49

0.66

0.66

0.89

1.20

1.60

3.23

5.89

June

0

0.02

0.03

0.05

0.05

0.07

0.07

0.09

0.09

0.12

0.12

0.16

0.21

0.27

0.27

0.36

0.63

1.40

4.55

July

0

0

0

0.02

0.02

0.02

0.03

0.04

0.04

0.06

0.06

0.08

0.10

0.13

0.17

0.29

0.49

1.10

3.96

Aug.

0

0

0

0

0

0.02

0.02

0.03

0.03

0.05

0.06

0.07

0.07

0.09

0.10

0.12

0.15

0.18

0.30

Sept.

0

0

0

0.02

0.03

0.03

0.04

0.04

0.04

0.06

0.07

0.07

0.09

0.10

0.12

0.12

0.17

0.35

0.60

Oct.

0.02

0.03

0.04

0.04

0.05

0.06

0.06

0.06

0.06

0.08

0.08

0.10

0.12

0.14

0.22

0.22

0.40

0.60

0.74
05089100 MIDDLE BRANCH PARK RIVER NEAR UNION, ND~Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

Recurrence

. ..... interval probability .

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum

instantaneous 

(ft3/s)

22.5

42.9

60.3

90.8

197

422

626

949

1,240

1,570

1,960

2,540

3-day period

4.83

10.1

15.0

24.3

62.1

162

268

463

661

913

1,230

ng

7-day period

2.71

6.39

9.92

16.6

42.5

102

158

246

324

413

513

ng

15-day period 30-day period

1.60 1.08

3.92 2.60

6.14 4.03

10.3 6.65

25.5 15.8

57.3 33.5

84.1 47.6

123 67.0

155 82.3

189 97.8

225 114

ng ng

Probability of occurrence of annual low discharges

[ng, statistic not given]

Minimum mean discharge (frVs)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 ng

0.10 10 ng

0.20 5 ng

0.50 2 ng

3 7

ng ng

ng ng

ng ng

ng ng

14

ng

ng

ng

ng

30 60

ng ng

ng ng

ng ng

ng ng

90 120 183

ng 0 0.015

ng 0 0.017

ng 0 0.021

ng 0 0.036

233
05089100 MIDDLE BRANCH PARK RIVER NEAR UNION, ND-Continued

Probability of occurrence of seasonal low discharges

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

ng ng

ng ng

ng ng

ng ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0 0

0 0

0 0

0.008 '0.013

0

0

0

0.018

0

0

0.009

0.030

0

0

0

7 14 30

March-April-May

0

0

0

0

0

0

0

0

0

0

0.029

0.129

September-October-November

0

0

0

0.008 0.015

0

0

0

0.025

0.011

0.015

0.020

0.043

1 Graphical interpretation.

234
05089100 MIDDLE BRANCH PARK RIVER NEAR UNION, ND-Continued

Annual peak discharge and corresponding gage height

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(tf/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

May 4

May 6

May 14

April 1 1

April 24

April 9

March 16

March 13

April 15

April 15

June 12

7.51

7.22

5.44

7.10

6.07

7.00

6.07

4.55

6.75

5.00

3.37

200

687

75.0

506

243

650

385

51.0

450

74.0

285

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

May 19

April 6

April 20

May 26

June 27

July 24

Aprils

July 14

March 17

June 20

3.33

5.91

6.16

3.67

3.42

3.71

3.83

3.38

4.07

5.38

108

300

960

112

90.0

94.0

91.0

71.0

85.0

507

Annual peak discharge, from highest to lowest, and corresponding gage height

1979

1967

1971

1986

1969

1974

1972

1978

1976

1970

1966

April 20

May 6

April 9

June 20

April 1 1

April 15

March 16

April 6

June 12

April 24

May 4

6.16

7.22

7.00

5.38

7.10

6.75

6.07

5.91

3.37

6.07

7.51

960

687

650

507

506

450

385

300

285

243

200

1980

1977

1982

1983

1981

1985

1968

1975

1984

1973

May 26

May 19

July 24

Aprils

June 27

March 17

May 14

April 15

July 14

March 13

3.67

3.33

3.71

3.83

3.42

4.07

5.44

5.00

3.38

4.55

112

108

94.0

91.0

90.0

85.0

75.0

74.0

71.0

51.0

235
05089100 MIDDLE BRANCH PARK RIVER NEAR UNION, ND-Continu

Monthly and annual mean discharges, in cubic feet per second

[Data were not rounded in accordance with U.S. Geological Survey publication standards; --, no data]

Year

1 966

1 967

1 968

1 969

1 970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

Oct.

1.45

0.109

0.032

0.058

0.059

0.045

0.335

0.181

0.178

0.100

0.051

0.068

0.402

0.082

0.047

0.621

0.627

__

Nov.

0.539

0.027

0.120

0.044

0.051

0.086

0.037

0.045

0.103

0.056

0.052

0.021

0.215

0.046

0.035

0.506

0.095

._

Dec.

0.079

0

0.012

0

0.031

0.013

0.017

0

0.043

0.013

0.030

0

0.164

0.001

0.008

0.145

0.019

_.

Jan.

0

0

0

0

0

0

0

0

0.004

0

0.014

0

0.055

0

0

0

0

_.

--

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

2.91

0

March

12.0

8.27

10.1

0

0.051

0.005

23.0

4.30

0

0.043

0.365

1.01

0.281

0

0.481

3.88

0.144

3.29

2.27

9.85

3.67

April

11.7

14.9

1.19

23.1

24.2

32.5

11.4

0.242

47.1

6.30

13.3

1.20

23.7

60.0

3.60

1.60

9.42

10.9

3.29

3.42

3.74

May

7.63

17.8

2.18

0.142

1.07

0.181

0.435

0.039

9.06

1.38

0.114

1.51

1.61

3.89

1.23

0.419

1.64

0.362

0.181

0.195

0.625

June

0.337

0.067

0.261

0.155

0.174

4.07

0.203

0.018

0.135

1.33

4.33

0.087

0.307

0.379

0.213

2.54

1.84

0.680

0.105

0.441

6.12

July

5.46

0.025

0.063

0.052

0.291

4.15

0.092

0.010

0.034

0.772

0.022

0.179

0.200

0.428

0.032

0.374

3.36

0.102

0.452

0.114

3.69
05089500 CART CREEK AT MOUNTAIN, ND

LOCATION.--Lat 48°40'37", long 97°51'41", in SWV4 sec.15, T.160 N., R.56 W., Pembina County, 

Hydrologic Unit 09020310, on right bank 50 ft downstream from bridge on State Highway 32, and 

0.7 mi south of Mountain.

DRAINAGE AREA.--16.9 mi2 .

PERIOD OF RECORD.--June 1954 to September 1984.

GAGE. Water-stage recorder and wooden control. Datum of gage is 1,027.40 ft above sea level.

EXTREMES FOR PERIOD OF RECORD.~Maximum discharge, 1,300 ft3/s, June 18, 1964, gage height, 

9.18 ft; maximum gage height, 9.51 ft, Apr. 19, 1979; no flow at times in some years.

Annual mean discharge

zu 

18

Q

0 16 

O 

UJ

UJ 

0.

ti 12

UJ

u_

O

Z 8

LU 

CD a 

CC 6

CO 4 

Q

2

n

I I I I I I I I I I I I I I I

-

:

_

i-

-

i i i i i i i i i i i i i i i i

i i i i i i

-

-

-

_

-

,1

llli II 1 . , "

S

in o m CO O> O>

CO CO CO CO

OLnOLDOLDOLDQ

o>o>o>o>o>o>o>o>o>

237
05089500 CART CREEK AT MOUNTAIN, ND-Continued

Statistics of monthly and annual mean discharges 

[m, more than 1 year of occurrence]

Month

October

November

December

January

February

March

April

May

June

July

August

September

Annual

mn I UU

70

50 

40 

30

Q

2 20

§ 10

tr 7

LU 5 

Q. 4 

I- 3

UJ 2 

LL

 1

§ 0.7 

0 0.5

2 0.4

CJ 0.2

DC

X 0.1 

C00.07 5 8:81-

0.03

0.02

0.01,

i

Maximum Minimum Mean

"srr ""?"' D m°/r ""^ Disr sss ££

*n/8; occurrence *n /s' occurrence <n /s' (ft3/s) variation

4.20 1981 0 m 0.680 0.95 1.41

2.10 1981 0 m 0.460 0.44 0.97

2.54 1983 0 m 0.260 0.49 1.92

0.684 1965 0 m 0.110 0.20 1.84

1.69 1983 0 m 0.190 0.43 2.32

19.8 1983 0 m 3.32 4.55 1.37

55.6 1979 0.940 1961 17.8 15.0 0.84

21.0 1974 0.294 1961 5.70 5.84 1.02

25.5 1964 0.013 1961 3.12 4.84 1.55

3.20 1966 0 1961 0.800 0.86 1.08

3.37 1980 0 m 0.460 0.81 1.77

5.39 1980 0 m 0.610 1.13 1.83

6.00 1974 0.311 1961 2.78 1.61 0.58

Annual flow duration

I 

^ 

r 

r 

r 

r 

r 

[

1 , , , , 1 , , , , , , , , , 1 , , , , 1 , , , , 1 , , , , 1 , , , , 1 , , , 1 1 , , , , 1 , . , , 1 , , , 1 > 5 10 20 30 40 50 60 70 80 90 95

Percentage 

of annual 

discharge

2.02

1.36

0.76

0.32

0.56

9.92

53.1

17.0

9.31

2.39

1.37

1.83

100

.:

-

j

-

-i

-j

-.

-.

]

98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

238
05089500 CART CREEK AT MOUNTAIN, ND-Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0.06

0.10

0.21

0.28

0.38

0.60

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0.06

0.10

0.18

0.27

0.33

0.50

March

0

0

0

0

0

0

0

0.04

0.10

0.10

0.18

0.18

0.24

0.43

1.00

1.80

4.82

9.70

17.9

April

0.10

0.50

0.70

0.97

1.30

1.90

2.63

3.38

4.01

4.57

5.66

7.55

8.82

12.1

16.5

21.1

27.6

41.1

78.4

May

0.28

0.47

0.47

0.79

0.79

1.00

1.00

1.30

1.70

1.70

2.30

2.90

4.02

5.13

5.80

7.09

9.52

13.2

21.0

June

0.04

0.14

0.19

0.26

0.34

0.46

0.46

0.62

0.84

0.84

1.10

1.10

1.50

2.00

2.00

2.70

4.07

5.28

8.41

July

0

0

0

0

0.02

0.08

0.10

0.16

0.16

0.26

0.26

0.34

0.44

0.56

0.73

0.93

1.20

1.50

2.60

Aug.

0

0

0

0

0

0

0

0

0

0

0

0.07

0.09

0.19

0.24

0.31

0.50

0.64

1.30

Sept.

0

0

0

0

0

0

0

0

0

0.05

0.16

0.16

0.26

0.33

0.42

0.53

0.67

0.84

1.70

Oct.

0

0

0

0.06

0.10

0.15

0.19

0.23

0.29

0.37

0.37

0.46

0.46

0.57

0.57

0.57

0.89

1.10

1.40
05089500 CART CREEK AT MOUNTAIN, ND-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

_ . Recurrence Exceedance . . . 

. . ..... interval probability . v K ' (years)

0.99

0.95

0.90

0.80

0.50

0.20

0.10

0.04

0.02

0.01

0.005

0.002

1.01

1.05

1.11

1.25

2

5

10

25

50

100

200

500

Maximum 

instantaneous 

(ft3/s)

11.4

28.9

46.2

79.1

204

475

710

1,060

1,350

1,660

1,990

2,460

3-day period

4.84

11.2

17.2

28.1

67.6

150

221

325

413

507

609

ng

Probability of occurrence of annual

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

7-day period 15-day period

2.95 1.58

7.32 4.40

11.4 7.15

18.9 12.2

44.7 29.0

92.8 56.9

129 75.4

178 97.2

215 112

252 125

288 136

ng ng

low discharges

30-day period

1.12

3.02

4.81

8.04

18.3

34.6

45.0

56.8

64.5

71.3

77.2

ng

Minimum mean discharge (f^/s)

Number of consecutive days

Non- Recurexceed- rence 

ance interprob- val 

ability (years)

0.05 20

0.10 10

0.20 5

0.50 2

1

ng

ng

ng

ng

3 7

ng ng

ng ng

ng ng

ng ng

14

0

0

0

0

30 60 90

000

000

000

000

120 183

0 0

0 0

0 0.039

0.072 0.175

240
05089500 CART CREEK AT MOUNTAIN, ND-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.042

0

0

0

0

7 14 30

March-April-May

0

0

0

0

0

0

0

0.041

0

0

0.100

0.598

September-October-November

0

0

0

0

0

0

0

0

0

0

0

0.153

241
05089500 CART CREEK AT MOUNTAIN, ND-Continued

Annual peak discharge and corresponding gage height

[ , no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(f^/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

June 21

April 1

April 26

September 2

July 4

April 2

April 1 1

March 21

August 10

June 3

June 18

April 10

May 4

May 6

May 15

April 9

3.63

6.88

5.96

3.83

2.43

5.63

7.42

3.28

6.22

4.94

9.18

8.22

6.26

3.96

3.01

7.80

64.0

392

340

146

27.0

160

570

30.0

422

218

1,300

927

329

205

126

528

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

April 25

April 9

March 16

March 24

April 13

April 28

June 12

May 29

April 6

April 19

April 3

March 27

May 18

March 30

March 26

7.45

5.63

4.85

2.69

8.10

2.85

3.88

4.93

4.97

9.51

3.38

3.28

3.80

-

3.04

603

337

230

36.0

220

49.0

188

267

380

734

74.0

62.0

165

215

22.0

Annual peak discharge, from highest to lowest, and corresponding gage height

1964

1965

1979

1970

1960

1969

1962

1955

1978

1956

1971

1966

1977

1972

1974

1963

June 18

April 10

April 19

April 25

April 11

April 9

August 10

April 1

April 6

April 26

April 9

May 4

May 29

March 16

April 13

June 3

«

8.22

9.51

7.45

7.42

7.80

6.22

6.88

4.97

5.96

5.63

6.26

4.93

4.85

8.10

4.94

1,300

927

734

603

570

528

422

392

380

340

337

329

267

230

220

218

1983

1967

1976

1982

1959

1957

1968

1980

1954

1981

1975

1973

1961

1958

1984

March 30

May 6

June 12

May 18

April 2

September 2

May 15

April 3

June 2 1

March 27

April 28

March 24

March 21

July 4

March 26

-

3.96

3.88

3.80

5.63

3.83

3.01

3.38

3.63

3.28

2.85

2.69

3.28

2.43

3.04

215

205

188

165

160

146

126

74.0

64.0

62.0

49.0

36.0

30.0

27.0

22.0

242
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243
05090000 PARK RIVER AT GRAFTON, ND

LOCATION.--Lat 48°25'29", long 97°24'42", in NEV4 sec. 13, T.157 N., R.53 W., Walsh County, 

Hydrologic Unit 09020310, on right bank just upstream of U.S. Highway 81 bridge in Grafton, and 

3.5 mi downstream from South Branch.

DRAINAGE AREA.--695 mi2 , approximately.

PERIOD OF RECORD.-April 1931 to current year. Monthly discharge only for some periods, published 

inWSP1308.

GAGE.-Water-stage recorder. Datum of gage is 811.00 ft above sea level. Prior to Oct. 1, 1984, gage 

located on right bank 30 ft upstream of Wakeman Avenue bridge. Datum of gage was 807.39 ft. Prior 

to Sept. 30, 1940, nonrecording gage at site 30 ft downstream at same datum. Oct. 1, 1940, to 

Sept. 17, 1946, nonrecording gage at site 2 mi downstream above masonry dam at same datum. 

Sept. 18, 1946, to July 25, 1952, nonrecording gage at site 30 ft downstream at same datum.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 12,600 ft3 /s, Apr. 19, 1950, gage 

height, 20.13 ft; no flow at times.

Annual mean discharge

ouu 

Q

O 400

O 

LJJ 

CO

GC 

LJJ 

Q.

LJJ 

LL

O

CO

O

2 200

LJJ 

0 

GC

X 

O 

CO 100

Q

o"<

I I I I I I I I I I

-

.

I I l I I I I I I I I

2U3OU3OU3OU3OU3O

ocococoo)O)O)O)O)O)O)

I I

Ml,,.! ill

U5 O U5 

O) w w

I 1 1 1 1 1

-

.

I.I 1. . 1 1 1 II. 1 ll ,.1. 1

oinomoinoinoinc

tf>LT)<P<P^^COCOCfio>C 

O) O) w w O) O) O) O) O) O) C

244
05090000 PARK RIVER AT GRAFTON, ND-Continued

Pre-regulation period, 1932-49 

Statistics of monthly and annual mean discharges, pre-regulation period

[m, more than 1 year of occurrence]

Maximum

_. . Water year i » - Discharge / Month ^3 9 of

x ' occurrence

October 32.7 1942

November 14.5 1945

December 6.99 1945

January 0.484 1948

February 2.00 1932

March 410 1945

April 1,810 1948

May 218 1948

June 202 1943

July 151 1943

August 30.5 1948

September 31.8 1941

Annual 177 1948

1,UUU - ' ' | i i i i | i i i i i i

500 '-

a 20°:

0 100 r 

O :

% 5Q -

"£

LiJ 20 -

Q_

t 10 r

UJ :

U- 5 -

o ;

D 2 -

o

2 1 ~

o UJ ajs OR 1-

cc

^ 0.2 -

O

CO 0.1 r

Q :

0.05 -

0.02 -

0.01 ' ' ' ' ' ' ' ' ' ' ' ' ' '"

2 5 10

Minimum Mean

Discharge Wate7ear Discharge ?a"dfrd <*"^t 

/«3/ \ °* ftt^/ \ deviation cientof 

(n/s) occurrence (Tr/s} (ft3/s) variation

0 m 2.07 7.65 3.70

0 m 1.64 3.77 2.30

0 m 0.770 1.79 2.31

0 m 0.070 0.13 2.02

0 m 0.160 0.47 2.97

0 m 68.4 116 1.70

5.40 1938 323 451 1.40

2.05 1939 30.0 48.8 1.63

0.347 1938 20.6 45.2 2.20

0.013 1934 15.2 36.7 2.41

0 m 3.97 7.81 1.97

0 m 2.66 7.34 2.76

3.11 1939 39.0 43.5 1.12

Annual flow duration

1 1 i i i i i i i i 1 1 1 1 1 1 1 1 1 1 1 1 1 i i i i i i i i | i i i i | iii | i

,

0

*

 

, i , , , , i , , , , i , , , , i , , , , i , , , , i , , , , i , , , , i , , , i ,

20 30 40 50 60 70 80 90 95

Percentage 

of annual 

discharge

0.44

0.35

0.17

0.01

0.03

14.6

68.9

6.40

4.40

3.26

0.85

0.57

100

-_

-

-

-

_

-

-

.

-

-

J

-

-

-

-

j~

-

98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

245
05090000 PARK RIVER AT GRAFTON, ND-Continued

Monthly and annual flow duration, in cubic feet per second, pre-regulation period

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.10

0.19

0.29

0.29

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0.05

0.10

0.10

0.20

0.20

0.20

0.40

March

0

0

0

0

0

0

0

0.10

0.10

0.18

0.42

0.99

2.30

14.2

16.4

23.6

38.1

134

450

April

0.05

2.50

5.32

12.7

20.6

28.5

35.9

47.1

56.9

65.7

81.4

102

124

162

234

295

438

825

1,680

May

0.84

1.40

2.40

3.20

4.89

5.92

7.24

8.12

9.20

12.2

15.4

19.0

22.8

26.6

32.2

39.1

49.0

66.3

108

June

0

0.10

0.44

0.72

1.20

1.50

2.50

3.20

4.54

5.52

6.96

8.62

10.4

14.0

17.8

22.4

28.4

37.6

90.0

July

0

0

0

0

0

0.10

0.28

0.48

0.62

1.00

1.40

1.80

2.30

3.00

4.30

5.61

16.2

42.3

74.3

Aug.

0

0

0

0

0

0

0

0

0.18

0.18

0.39

0.48

0.58

0.71

1.30

1.50

3.40

11.7

26.6

Sept.

0

0

0

0

0

0

0

0

0

0

0.10

0.10

0.10

0.35

0.66

1.20

1.90

3.50

8.91

Oct.

0

0

0

0

0

0

0

0

0

0.10

0.10

0.10

0.18

0.28

0.34

0.51

0.94

0.94

13.7
05090000 PARK RIVER AT GRAFTON, ND-Continued

Probability of occurrence of annual high discharges, pre-regulation period

[ng, statistic not given]

Maximum mean discharge 

(ft^s)

_ . Recurrence Maximum Exceedance . . . . . . 

. ..... interval instantaneous proDaDiiity . . /x*3/ \ (years) (it /s)

0.99

0.95

0.90

0.80

0.50

0.20

0.10

0.04

0.02

0.01

0.005

0.002

1.01 70.9

1.05 148

1.11 221

1.25 358

2 909

5 2,340

10 3,840

25 6,550

50 9,260

100 12,700

200 16,900

500 23,900

3-day period 7-day period

62.7 47.6

123 94.8

178 139

284 222

722 565

1,940 1,510

3,320 2,560

6,010 4,580

8,900 6,720

12,700 9,540

17,800 13,200

ng ng

15-day period

26.4

55.9

83.8

138

362

974

1,650

2,900

4,200

5,880

8,010

ng

30-day period

16.3

34.3

51.3

83.9

217

572

953

1,650

2,370

3,270

4,400

ng

Probability of occurrence of annual low discharges, pre-regulation period

Nonexceedance 

probability

0.05

0.10

0.20

0.50

Recurrence 

inter- 1 3 7 

vai 

(years)

20 ng ng ng

10 ng ng ng

5 ng ng ng

2 ng ng ng

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

14 30 60

000

000

000

000

90

0

0

0

0

120 183

0 0

0 0

0 0

0.024 0.051

247
05090000 PARK RIVER AT GRAFTON, ND-Continued

Probability of occurrence of seasonal low discharges, pre-regulation period

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

Dec ember- January-February

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

June-July-August

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0

0

0

0

0

0

0

0

0.092

0

0

0

0.332

0

0

0

0

7 14 30

March-April-May

0

0

0

0

0

0

0

0.024

0

0

0.137

2.60

September-October-November

0

0

0

0

0

0

0

0

0

0

0

0

248
05090000 PARK RIVER AT GRAFTON, ND-Continued

Post-regulation period, 1950-94 

Statistics of monthly and annual mean discharges, post-regulation period

[m, more than 1 year of occurrence]

Maximum

Month Di?^r)9e Wat orfyear 

' occurrence

October 69.9 1983

November 31.3 1981

December 17.4 1983

January 13.9 1983

February 45.7 1981

March 400 1983

April 2,050 1950

May 2,070 1950

June 576 1964

July 398 1993

August 569 1993

September 151 1957

Annual 353 1950

500 '-

Q 200 - *

8 100 r

UJ 50 -

W 

rruj 20 -

a.

ID 10 r

UJ :

"- 5 -

O

mD 2 -

0

z 1 -

Llf Q5 -

o -

rr

^ 0.2 -

o

W 0.1 r

O :

0.05 ~

0.02 -

0.01 ' ' ' ' ' ' ' I I ' 1 M M

2 5 10

Minimum

Discharge Watervear Discharge

(ft^s) ° (ft3/s) 

x ' occurrence

0 m 6.41

0 m 4.12

0 m 2.89

0 m 1.79

0 m 3.04

0 1991 62.8

0 1991 407

2.33 1961 140

0 1961 54.2

0 1990 32.0

0 m 17.8

0 m 9.59

1.38 1990 61.7

Annual flow duration

9

0

0

0

*

1 1 1 i i i , i , , , 1 1 , , , , i , , , , i , , , , i , , , 20 30 40 50 60 70

Mean

Standard Coeffideviation cient of 

(ft3/s) variation

14.4 2.25

6.25 1.52

4.09 1.41

3.04 1.70

7.09 2.33

106 1.69

456 1.12

330 2.36

93.5 1.72

71.6 2.23

84.4 4.76

26.0 2.71

63.1 1.02

.!,.!! 1 , I 1 1

80 90 95

Percentage 

of annual 

discharge

0.86

0.56

0.39

0.24

0.41

8.47

54.9

19.9

7.30

4.32

2.39

1.29

100

-_

-

-

_

-

-

:

~

-

-

J

.

-

-

-

-

-

98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

249
05090000 PARK RIVER AT GRAFTON, ND-Continued

Monthly and annual flow duration, in cubic feet per second, post-regulation period

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

to A<5 01 UJ

o

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0.02 

0.10

0.10

0.19

0.37

0.58

0.91

1.10

1.80

2.20

3.50

5.88

9.51

Feb.

0

0

0

0

0

0.09

0.09 

0.16

0.31

0.57

0.78

1.10

1.50

2.00

2.71

3.34

4.08

5.97

10.1

March

0

0

0.08

0.15

0.30

0.60

0.84 

1.20

2.33

3.05

3.76

4.84

6.93

9.50

11.8

22.2

69.7

159

473

April

3.51

6.27

10.0

13.9

18.6

24.9

33.3 

44.2

61.4

82.6

107

136

199

267

348

452

695

1,130

2,080

May

2.14

3.52

5.04

7.89

11.2

14.9

18.7 

22.6

27.1

32.2

38.1

46.9

56.7

70.3

87.0

114

172

266

552

June

0.09

0.82

2.54

3.80

5.68

7.56

9.49 

12.5

15.6

19.4

23.3

28.0

32.6

38.6

44.8

58.1

80.1

121

232

July

0

0.06

0.09

0.29

0.60

0.88

1.80 

1.80

3.97

5.75

6.97

9.58

13.5

16.9

21.5

27.1

37.1

59.2

114

Aug.

0

0

0

0

0.04

0.09

0.13 

0.18

0.26

0.38

0.54

1.10

1.60

2.93

3.87

5.77

9.04

17.5

42.3

Sept.

0

0

0

0

0

0.02

0.06 

0.08

0.11

0.16

0.16

0.32

0.65

1.30

2.96

4.21

6.43

18.1

50.0

Oct.

0

0

0

0

0

0.02

0.06 

0.08

0.15

0.20

0.20

0.50

1.20

1.70

3.04

4.77

7.82

17.1

32.3
05090000 PARK RIVER AT GRAFTON, ND-Continued

Probability of occurrence of annual high discharges, post-regulation period

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

_ . Recurrence Exceedance . . . 

. ..... interval probab,lity (years)

0.99

0.95

0.90

0.80

0.50

0.20

0.10

0.04

0.02

0.01

0.005

0.002

1.01

1.05

1.11

1.25

2

5

10

25

50

100

200

500

Maximum 

instantaneous 

(ft^s)

11.6

51.5

107

246

1,010

3,380

5,860

9,950

13,600

17,600

22,000

28,300

3-day period

4.90

29.5

69.5

179

838

2,840

4,770

7,630

9,910

12,200

14,500

ng

7-day period

4.30

24.8

57.3

145

658

2,190

3,660

5,830

7,570

9,340

11,100

ng

15-day period

3.76

1 9.8

43.8

1 06

451

1,440

2,360

3,730

4,820

5,920

7,020

ng

30-day period

2.99

14.4

30.7

71.6

293

922

1,520

2,430

3,180

3,950

4,730

ng

Probability of occurrence of annual low discharges, post-regulation period

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurexceed- rence

ance interprob- val 

ability (years)

0.05 20

0.10 10

0.20 5

0.50 2

1

0

0

0

0

3 7

0 0

0 0

0 0

0 0

14

0

0

0

0

30 60

0 0

0 0

0 0

0.042 0.097

90

0

0

0.017

0.243

120 183

0 0.023

0.0 1 0 0.063

0.083 O.I 74

0.537 0.947

251
05090000 PARK RIVER AT GRAFTON, ND-Continued

Probability of occurrence of seasonal low discharges, post-regulation period

Minimum mean discharge (tt3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0.009

0

0

0

0.073

0

0

0

0.074

0

0

0

0.140

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0.045

0

0

0

0.120

0

0

0

0.217

0

0.007

0.081

0.812

0

0

0.029

0.691

7 14 30

March-April-May

0

0

0.036

0.945

0

0

0.085

1.23

0.059

0.250

0.980

7.33

September-October-November

0

0

0

0.026

0

0

0

'0.032

0

0

0

0.038

0

0

0

0.088

1 Graphical interpretation.

252
05090000 PARK RIVER AT GRAFTON, ND-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

! 1882

J 1897

! 1916

1932

1933

1934

1935

1936

1937

1938

1939

1940

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

~

April 15

April

April 10

April 2

April 9

March 28

April 14

April 10

March 21

March 30

April 20

April 13

April 6

March 28

April 12

March 16

March 23

April 4

April 19

April 1 1

April 19

April 6

Aprils

June 5

June 16

April 3

April 22

September 3

April 7

April 6

April 15

April 27

16.00

18.14

17.64

-

15.20

6.61

8.34

13.68

8.21

6.12

7.68

5.83

13.04

15.46

13.15

5.55

10.88

11.40

9.70

20.06

16.94

20.13

13.34

6.66

5.45

7.24

16.84

16.25

10.96

5.70

12.29

15.40

7.51

3,480

3,140

750

2,200

393

443

1,200

380

291

150

210

1,830

4,310

1,430

563

1,180

1,490

520

11,700

2,530

12,600

1,640

180

125

478

2,100

4,200

1,300

41.0

1,200

2,770

40.0

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

April 20

June 6

June 20

April 13

April 4

May 9

March 28

April 13

April 29

April 10

April 14

March 27

April 16

April 17

April 4

May 5

AprilS

April 22

April 7

April 3

April 1

March 7

March 27

March 19

March 24

April 7

April 6

April 24

April 21

May 23

March 8

July 30

March 22

18.27

8.78

14.01

18.21

16.08

14.46

9.85

18.13

12.09

16.42

14.30

8.82

17.03

11.10

14.06

7.57

17.10

19.56

9.09

9.51

12.26

12.34

8.72

9.74

9.48

13.44

7.79

7.79

7.28

7.47

9.90

12.22

10.49

5,900

344

2,140

5,710

2,790

2,290

630

4,990

1,520

3,600

2,150

251

3,660

900

2,000

40.0

3,700

8,740

399

471

1,420

1,360

269

1,000

859

3,220

143

143

24.0

48.0

1,030

2,420

800

Annual peak discharge, from highest to lowest, and corresponding gage height

1950

1948

1979

1962

1965

1969

1942

1956

1978

1974

April 19

April 19

April 22

April 20

April 13

April 13

April 6

April 22

Aprils

April 16

20.13

20.06

19.56

18.27

18.21

18.13

15.46

16.25

17.10

17.03

12,600

11,700

8,740

5,900

5,710

4,990

4,310

4,200

3,700

3,660

1971

! 1897

1987

l \9\6

1966

1960

1949

1993

1967

1933

April 10

April 15

April 7

April

April 4

April 15

April 1 1

July 30

May 9

April 2

16.42

18.14

13.44

17.64

16.08

15.40

16.94

12.22

14.46

15.20

3,600

3,480

3,220

3,140

2,790

2,770

2,530

2,420

2,290

2,200

253
05090000 PARK RIVER AT GRAFTON, ND-Continued

Annual peak discharge and corresponding gage height-Continued

[-, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(tf/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, from highest to lowest, and corresponding gage height Continued

1972

1964

1955

1976

1941

1951

1970

1946

1943

1982

1983

1957

1936

1959

1945

1992

1985

1975

1986

1994

1932

1968 

1944

April 14

June 20

April 3

April 4

April 13

April 6

April 29

March 23

March 28

April 1

March 7

September 3

April 14

April 6

March 16

March 8

March 19

April 17

March 24

March 22

April 10

March 28 

April 12

14.30

14.01

16.84

14.06

13.04

13.34

12.09

11.40

13.15

12.26

12.34

10.96

13.68

12.29

10.88

9.90

9.74

11.10

9.48

10.49

-

9.85 

5.55

2,150

2,140

2,100

2,000

1,830

1,640

1,520

1,490

1,430

1,420

1,360

1,300

1,200

1,200

1,180

1,030

1,000

900

859

800

750

630 

563

1947

1954

1981

1935

1980

1934

1937

1963

1938

1984

1973

1940

1952

1939

1988

1989

1953

1991

1958

1961

1977

1990 

^882

April 4

June 16

April 3

March 28

April 7

April 9

April 10

June 6

March 21

March 27

March 27

April 20

Aprils

March 30

April 6

April 24

June 5

May 23

April 7

April 27

May 5

April 21

9.70

7.24

9.51

8.34

9.09

6.61

8.21

8.78

6.12

8.72

8.82

5.83

6.66

7.68

7.79

7.79

5.45

7.47

5.70

7.51

7.57

7.28 

16.00

520

478

471

443

399

393

380

344

291

269

251

210

180

150

143

143

125

48.0

41.0

40.0

40.0

24.0

'Determined by U.S. Army Corps of Engineers; not used in statistics.

254
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255
05090000 PARK RIVER AT GRAFTON, ND-Continued

Monthly and annual mean discharges, in cubic feet per second-Continued 

[Data were not rounded in accordance with U.S. Geological Survey publication standards; --, no data]

Year

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

Oct.

46.1

0.923

0.032

0.161

0.438

0.013

5.34

0.041

5.47

0.211

0.797

0.229

0.210

0.181

0.311

40.3

8.76

69.9

1.29

2.76

10.2

0.769

0.072

0.042

0.005

0

1.24

0

27.3

Nov.

15.7

1.22

0.130

0.076

0.089

3.20

6.67

0.075

5.51

4.02

7.36

1.70

2.41

5.23

5.57

31.3

7.50

22.1

4.95

7.67

7.19

0.484

0.090

0.040

0.432

0

4.49

0.012

13.8

Dec.

9.72

1.88

0.050

0.115

2.47

0.788

0.426

3.25

7.41

8.68

6.97

2.12

2.50

4.12

4.28

14.1

6.29

17.4

0.974

1.63

1.27

0.353

0.191

0.011

0.093

0

8.97

0.232

10.5

Jan.

2.09

1.13

0.024

0.081

0.268

0.010

0.002

0.724

1.60

5.09

5.17

2.19

2.40

0.916

2.44

5.42

5.39

13.9

0.471

0

8.25

0.341

0.116

0

0.018

0

10.1

0.105

6.58

Feb.

0.193

1.33

1.68

2.27

0.125

0.633

3.86

0.311

1.82

3.29

4.55

2.00

1.45

0.768

1.32

45.7

3.38

10.4

1.71

0.114

11.2

1.98

0.737

0.002

0

0

4.74

10.8

5.85

March

297.6

110.5

83.4

8.02

0.597

17.0

320.9

62.7

8.50

3.63

33.8

6.06

19.8

2.37

2.29

112.5

29.0

399.6

36.7

217.8

228.1

97.3

3.85

2.32

0.359

0

357.7

20.7

199.0

April

637.5

636.7

46.4

859.5

633.7

876.1

417.4

28.2

1,078

245.9

542.4

8.83

864.6

1,450

92.4

108.2

497.5

319.9

77.6

68.5

195.2

988.3

42.6

32.5

9.60

0

217.6

91.8

221.5

May

441.0

513.0

50.9

30.6

207.7

57.4

57.2

12.4

687.7

145.9

26.7

4.86

98.9

285.0

12.3

28.3

111.5

58.3

21.1

21.1

106.9

47.5

7.89

10.9

4.42

5.11

36.1

59.4

109.5

June

84.9

23.3

23.2

14.5

38.7

75.7

9.56

9.45

100.7

15.4

81.7

1.54

22.4

47.0

24.5

50.7

98.0

74.1

17.1

13.4

18.2

14.3

5.52

1.55

1.66

1.68

23.3

26.9

36.2

July

136.0

1.98

9.40

7.12

15.0

74.7

0.218

0.383

5.58

79.6

3.69

0.127

4.61

54.2

0.669

59.1

254.3

20.4

2.25

2.26

55.4

9.39

0.980

0.291

0

16.0

5.57

398.4

21.2
05092000 RED RIVER OF THE NORTH AT DRAYTON, ND

LOCATION.--Lat 48°34'20", long 97°08'50", in SE1 /4SE1 /4 SEV4 sec.24, T.159 N., R.51 W., Pembina 

County, Hydrologic Unit 09020311, on downstream side of bridge on North Dakota State Highway 11, 

at the North Dakota-Minnesota border, 1.5 mi northeast of Drayton, and at mile 206.7.

DRAINAGE AREA.-34,800 mi2 , approximately, includes 3,800 mi2 in closed basins.

PERIOD OF RECORD.--April 1936 to June 1937, April 1941 to current year (fragmentary prior to April 

1949).

GAGE. Water-stage recorder and concrete control. Datum of gage is 755.00 ft above sea level

(Minnesota highway benchmark). Prior to Nov. 30, 1954, nonrecording gage at site 1.5 mi upstream at 

datum 1.59 ft higher.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 92,900 ft3/s, Apr. 28, 1979, gage 

height, 43.66 ft; minimum daily discharge, 7.7 ft3/s, Oct. 16, 1936, gage height, 1.75 ft.

EXTREMES OUTSIDE PERIOD OF RECORD.-Flood of April 1897 reached a stage of about 41 ft at 

site and datum in use prior to Nov. 30, 1954.

12,000

g 10,000

o 

o

UJ 

W

tr

LU 8,000

0_

UJ 

UJ 

LIES 6,000

o

0 4,000 

GC

<

I 

o

W

0 2,000

Annual mean discharge

i i i \ I i I i i i i i i i I i i i i i i i r

i i i i i i i i i i i i i

O LO O LO LO O LO O LO O LO

O r~ i CM CM CO CO

O) O) O) O) O) O) O)

OLOO OLOOLOOin

257
05092000 RED RIVER OF THE NORTH AT DRAYTON, ND-Continued

Statistics of monthly and annual mean discharges

Maximum

Month

October

November

December

January

February

March

April

May

June

July

August

September

Annual

Discharge 

(ft3/s)

4,460

5,650

3,070

2,060

1,880

9,330

38,400

58,900

23,400

28,200

21,600

7,910

10,500

Water year 

of 

occurrence

1972

1972

1972

1966

1952

1983

1966

1950

1962

1975

1993

1993

1950

Minimum

Discharge 

(ft3/s)

13.8

277

149

174

201

280

1,280

938

399

118

50.1

27.4

536

Water year 

of 

occurrence

1937

1977

1977

1990

1977

1962

1981

1977

1936

1936

1936

1936

1977

Discharge 

(ft3/s)

1,700

1,460

1,180

1,040

1,010

2,620

13,200

7,900

5,010

4,410

2,350

1,790

3,740

Mean

Standard 

deviation 

(ft3/s)

1,270

1,010

713

584

534

2,380

9,460

9,630

4,170

4,650

3,210

1,480

2,190

Coefficient of 

variation

0.75

0.69

0.61

0.56

0.53

0.91

0.72

1.22

0.83

1.05

1.37

0.82

0.59

Percentage 

of annual 

discharge

3.89

3.36

2.69

2.37

2.32

6.01

30.2

18.1

11.5

10.1

5.39

4.11

100

Annual flow duration

Q

Z

O

o

LJJ

CO

CC

LJJ

Q.

hLJJ

LJJ

Li.

O

CD

O

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70,000

50,000

40,000

30,000

20,000

10,000

7,000

5,000

4,000

3,000

2,000

1,000

700

500

400

300

200

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PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

90 95 98

258
05092000 RED RIVER OF THE NORTH AT DRAYTON, ND-Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

195

267

346

421

496

583

709

771

840

1,030

1,190

1,320

1,380

1,440

1,540

1,610

1,680

1,810

1,990

Feb.

222

316

379

446

522

573

671

761

861

1,040

1,140

1,260

1,400

1,440

1,480

1,550

1,620

1,720

1,830

March

354

466

563

650

790

948

1,110

1,260

1,390

1,500

1,610

1,750

1,890

2,030

2,190

2,480

3,370

6,420

11,600

April

1,110

1,560

2,040

2,430

2,890

3,540

4,360

5,280

6,350

7,820

9,980

12,300

14,900

1 7,700

20,500

23,000

25,900

29,900

40,400

May

1,120

1,470

1,700

2,070

2,400

2,700

3,020

3,330

3,620

4,030

4,530

5,090

6,200

7,460

8,890

10,900

13,900

1 8,000

26,400

June

747

1,100

1,430

1,730

1,960

2,200

2,470

2,800

3,200

3,550

3,930

4,360

4,830

5,410

6,220

7,200

8,680

10,800

14,500

July

420

666

1,080

1,420

1,720

1,980

2,260

2,530

2,780

3,040

3,350

3,680

4,060

4,470

4,990

5,690

6,700

8,780

13,700

Aug.

239

397

548

752

909

1,000

1,100

1,230

1,370

1,520

1,680

1,910

2,140

2,380

2,640

2,910

3,380

4,170

6,630

Sept.

264

462

542

650

774

892

993

1,100

1,210

1,320

1,490

1,680

1,930

2,110

2,280

2,500

2,810

3,430

5,030

Oct.

304

379

461

544

688

789

881

966

1,090

1,270

1,440

1,620

1,810

2,020

2,300

2,720

3,250

3,800

4,500
05092000 RED RIVER OF THE NORTH AT DRAYTON, ND-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

_ . Recurrence Exceedance . . . 

. ..... interval probab,l,ty (yeafs)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 

(ft3/s)

2,830

5,580

7,810

11,500

22,400

40,100

52,600

68,700

80,600

92,300

104,000

119,000

3-day period 7-day period

2,450

5,050

7,220

10,900

22,000

40,500

53,800

71,000

83,800

96,400

109,000

ng

2,230

4,640

6,680

10,100

20,700

38,700

51,700

68,700

81,400

93,900

106,000

ng

15-day period

1,790

3,770

5,460

8,370

17,600

34,000

46,400

63,000

75,800

88,700

102,000

ng

30-day period

1,360

2,850

4,130

6,340

13,600

26,900

37,300

51,700

63,200

75,000

87,200

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (n^/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 136

0.10 10 194

0.20 5 290

0.50 2 577

3 7

138 147

198 209

296 314

593 626

14

155

222

333

666

30 60

178 212

252 294

372 425

724 800

90

235

322

461

855

120 183

260 312

354 419

501 589

913 1,070

260
05092000 RED RIVER OF THE NORTH AT DRAYTON, ND-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (fta/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

169

248

379

759

174

257

394

793

180

265

408

820

196

285

431

849

268

363

512

916

June-July-August

0.05

0.10

0.20

0.50

20

10

5

2

161

274

482

1,140

183

303

522

1,200

200

328

561

1,300 1,

233

390

676

590

183

252

363

685

7 14 30

March-April-May

281

383

541

971

305

417

594

1,080

436

576

807

1,530

September-October-November

211

288

412

767

230

314

449

851

308

401

548

978

261
05092000 RED RIVER OF THE NORTH AT DRAYTON, ND-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(tt3/s)

Annual peak discharge, by year, and corresponding gage height

1897

1936

1937

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

April

April 19

May 5

April 15

April 7

April 17

April 18

April 2

March 30

April 28

April 21

April 12

May 12

April 15

April 25

June 26

April 15

April 11

April 27

July 4

July 12

AprilS

April 14

March 31

April 24

April 12

April 20

April 22

AprilS

41.00

-

-

32.00

-

33.66

21.05

31.70

--

33.12

39.81

-

41.58

30.10

-

20.00

16.38

27.28

35.16

22.33

14.53

23.78

33.71

12.98

36.26

20.42

23.60

40.43

42.15

--

16,600

4,530

22,800

21,900

28,700

12,300

24,600

23,000

29,300

57,000

27,900

86,500

24,600

23,900

14,700

11,100

18,000

28,000

14,100

7,850

11,200

24,700

3,600

32,300

12,900

15,600

47,200

67,500

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

AprilS

July 23

April 19

April 29

April 1 1

April 20

March 25

April 25

May 4

April 7

April 9

April 16

April 28

April 10

July 3

April 17

April 9

April 6

May 21

April 7

April 7

April 7

April 19

April 7

July 11

March 16

August 14

April 6

36.70

20.41

41.08

38.20

29.50

34.75

24.49

--

39.80

35.00

12.12

41.19

43.66

29.00

13.96

36.78

30.88

--

28.12

36.59

36.61

22.12

39.35

15.54

13.26

23.28

36.48

33.57

32,200

12,500

59,000

31,700

23,400

31,100

13,400

43,900

44,000

27,600.

3,400

56,200

92,900

22,400

7,520

35,500

21,300

32,400

17,700

29,700

27,600

13,900

41,800

5,080

4,940

8,800

27,600

27,900

Annual peak discharge, from highest to lowest, and corresponding gage height

1979

1950

1966

1969

1948

1978

1965

1975

1974

1989

1982

1984

1962

1967

April 28

May 12

AprilS

April 19

April 21

April 16

April 22

May 4

April 25

April 19

April 17

April 6

April 24

AprilS

43.66

41.58

42.15

41.08

39.81

41.19

40.43

39.80

-

39.35

36.78

-

36.26

36.70

92,900

86,500

67,500

59,000

57,000

56,200

47,200

44,000

43,900

41,800

35,500

32,400

32,300

32,200

1970

1972

1986

1947

1943

1956

1949

1994

1976

1987

1993

1960

1945

1951

April 29

April 20

April 7

April 28

April 17

April 27

April 12

April 6

April 7

April 7

August 14

April 14

April 2

April 15

38.20

34.75

36.59

33.12

33.66

35.16

--

33.57

35.00

36.61

36.48

33.71

31.70

30.10

31,700

31,100

29,700

29,300

28,700

28,000

27,900

27,900

27,600

27,600

27,600

24,700

24,600

24,600

262
05092000 RED RIVER OF THE NORTH AT DRAYTON, ND-Continued

Annual peak discharge and corresponding gage height Continued

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, from highest to lowest, and corresponding gage height Continued

1952

1971

1946

1941

1980

1942

1983

1955

1985

1936

1964

1953

1957

1988

1973

April 25

April 1 1

March 30

April 15

April 10

April 7

April 9

April 11

May 21

April 19

April 20

June 26

July 4

April 7

March 25

-

29.50

-

32.00

29.00

-

30.88

27.28

28.12

--

23.60

20.00

22.33

22.12

24.49

23,900

23,400

23,000

22,800

22,400

21,900

21,300

18,000

17,700

16,600

15,600

14,700

14,100

13,900

13,400

1963

1968

1944

1959

1954

1992

1958

1981

1990

1991

1937

1961

1977

1897

April 12

July 23

April 18

AprilS

April 15

March 16

July 12

July 3

April 7

July 11

May 5

March 3 1

April 9

April

20.42

20.41

21.05

23.78

16.38

23.28

14.53

13.96

15.54

13.26

--

12.98

12.12

41.00

12,900

12,500

12,300

11,200

11,100

8,800

7,850

7,520

5,080

4,940

4,530

3,600

3,400

--

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(Da
05092200 PEMBINA COUNTY DRAIN 20 NEAR GLASSIGN, ND

LOCATION.--Lat 48°41'49", long 97°23'03", in NW% sec.8, T.160 N, R.52 W., Pembina County, 

Hydrologic Unit 09020311, on left bank 50 ft downstream from bridge on county highway, and 3 mi 

southeast of Glasston.

DRAINAGE AREA.--80 mi2 .

PERIOD OF RECORD.-October 1971 to September 1986. Seasonal records only since 1983.

GAGE. Water-stage recorder. Datum of gage is 808 ft above sea level, from topographic map.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 940 ft3/s, Apr. 20, 1979, gage height, 

9.3 ft; maximum gage height, 14.64 ft, Apr. 19, 1979, backwater from ice; no flow most of time.

Annual mean discharge

zu 

18

Q

Q16 

O LiJ

OC U 

LIJ 

CLID 12

UJ 

U_

I 10

O

Z 8

QJ

OC 6

O 

W 4

Q

2 

n

I i I i I i 1 i i I i 1 i I I I I I I I I 1 I

-

-

.

-

-

-

-

-

.

I i i i i I i i i i i i i i i i i i 1. ill

~

-

-

-

-

.

ll 1 1 1

§

LOOLOOLOOlOOLOOLO 

COOJOJOO-r-T-CMCMcOCO 

GOGOGOGOO)O)O)O)O)O)O)O)

m o m o

 < m m co

O) O) O) O)

m o m o

266
05092200 PEMBINA COUNTY DRAIN 20 NEAR GLASSTON, ND-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence; ng, statistic not given]

Month

October

November

December

January

February

March

April

May

June

July

August

September

Annual

10

7

0 5

g 4

O

£ 3

DC 

L1J ~ 0_ 2

ti 

LJJ 

LL

o5 1

0 0.7

llfO.5

a: 0.4

o°-3 

w

Q 0.2 

0.1 r

Maximum Minimum Mean

_.. . Water year _.. . Water year _. . Standard Coeffi- Discharge / Discharge / Discharge . . ,. . , . 

«*3/ \ of «*3/ \ of «*3/ \ deviation cientof 

(ft/s) occurrence (ft /s) occurrence (ft /s) (ft3/s) variation

0.224 1981 0 m 0.030 0.07 2.40

0.125 1981 0 m 0.010 0.04 3.32

0 m 0 m 0 0 ng

0 m 0 m 0 0 ng

0 m 0 m 0 0 ng

7.92 1985 0 m 2.03 2.54 1.26

124 1979 0 m 19.6 32.5 1.66

38.1 1974 0 m 3.21 9.74 3.03

2.36 1983 0 m 0.370 0.64 1.73

6.17 1986 0 m 0.450 1.58 3.53

1.27 1985 0 m 0.100 0.32 3.15

0.670 1985 0 m 0.080 0.18 2.29

10.6 1979 0.005 1977 2.29 3.37 1.47

Annual flow duration

-

1 

-

-

-

\ , , i i i 1 1 1 1 , , 1 1 1 1 i i i i i j , 1 1 1 1 1 , 1 1 , i , , i , , , , i , , , , i , , . . i , , i i

> 5 10 20 30 40 50 60 70 80 90 95

Percentage 

of annual 

discharge

0.11

0.04

0

0

0

7.83

75.7

12.4

1.43

1.74

0.40

0.31

100

-

-

-

-

-

_

-

-

98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

267
05092200 PEMBINA COUNTY DRAIN 20 NEAR GLASSTON, ND-Contin

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

March

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.37

4.32

17.4

April

0

0

0

0

0

0

0

0

0.16

0.43

0.86

1.20

1.70

3.34

6.90

15.3

24.8

49.7

92.3

May

0

0

0

0

0

0

0

0

0

0

0

0

0

0.02

0.25

0.61

1.50

2.70

13.8

June

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.02

0.09

0.36

0.70

1.40

July

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.07

0.43

Aug.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.21

Sept.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.09

0.44

Oct.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.08

0.16
05092200 PEMBINA COUNTY DRAIN 20 NEAR GLASSTON, ND-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

_ . Recurrence

ExCtfdK8rfe interval probab.hty (^rs)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 

(ft3/s)

ng

ng

15.7

28.8

85.6

232

376

614

830

1,080

1,360

1,780

Maximum mean discharge 

(ft3/s)

3-day period 7-day period 15-day period

0.029 0.014 0.005

0.449 0.250 0.112

1.60 0.946 0.467

6.21 3.90 2.11

50.0 33.7 19.8

219 151 88.2

384 264 149

609 415 224

768 517 271

909 607 308

1,030 682 338

ng ng ng

30-day period

0.005

0.085

0.3 1 0

1. 24

1 0.4

46.5

81.7

129

163

192

218

ng

Probability of occurrence of annual low discharges

[ng, statistic not given]

Minimum mean discharge (fl3/s)

Number of consecutive days

Non- Recurexceed- rence 

ance inter- 1 

prob- val 

ability (years)

0.05 20 ng

0.10 10 ng

0.20 5 ng

0.50 2 ng

3 7

ng ng

ng ng

ng ng

ng ng

14 30 60 90

ng ng ng ng

ng ng ng ng

ng ng ng ng

ng ng ng ng

120 183

ng ng

ng ng

ng ng

ng ng

269
05092200 PEMBINA COUNTY DRAIN 20 NEAR GLASSTON, ND-Continued

Probability of occurrence of seasonal low discharges

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurrence

exceedance interval

probability (years)

14 30 14 30

0.05

0.10

0.20

0.50

0.05

0.10

0.20

0.50

20

10

5

2

20

10

5

2

ng 

ng 

ng 

ng

ng 

ng 

ng 

ng

December-January-February

ng ng 

ng ng 

ng ng 

ng ng 

June-July-August

ng 

ng 

ng 

ng

ng 

ng 

ng 

ng

ng ng

ng ng

ng ng

ng ng

March-April-May

ng 

ng 

ng

ng 

ng 

ng

ng 0

ng 0

ng 0

ng ng ng 0 

September-October-November

ng ng

ng ng

ng ng

ng 

ng 

ng

ng ng

ng 

ng 

ng 

ng

270
05092200 PEMBINA COUNTY DRAIN 20 NEAR GLASSTON, ND-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1972

1973

1974

1975

1976

1977

1978

1979

April 13

June 19

April 23

April 30

April 3

July 2

March 27

April 20

6.02

3.94

7.19

5.70

7.10

4.72

11.60

9.30

85.0

4.60

212

73.0

268

2.20

73.0

940

1980

1981

1982

1983

1984

1985

1986

March 30

April 1

April 13

April 4

March 29

March 14

July 12

8.92

6.53

--

7.95

8.66

11.25

7.50

40.0

80.0

90.0

166

88.0

59.0

90.0

Annual peak discharge, from highest to lowest, and corresponding gage height

1979

1976

1974

1983

1982

1986

1984

1972

April 20

April 3

April 23

April 4

April 13

July 12

March 29

April 13

9.30

7.10

7.19

7.95

--

7.50

8.66

6.02

940

268

212

166

90.0

90.0

88.0

85.0

1981

1975

1978

1985

1980

1973

1977

April 1

April 30

March 27

March 14

March 30

June 19

July 2

6.53

5.70

11.60

11.25

8.92

3.94

4.72

80.0

73.0

73.0

59.0

40.0

4.60

2.20

271
05092200 PEMBINA COUNTY DRAIN 20 NEAR GLASSTON, ND-Contin

Monthly and annual mean discharges, in cubic feet per second 

[Data were not rounded in accordance with U.S. Geological Survey publication standards; --, no data]

Year

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

Oct.

0

0

0

0

0

0

0.049

0

0

0.224

0.035

Nov.

0

0

0

0

0

0

0

0

0

0.125

0

Dec.

0

0

0

0

0

0

0

0

0

0

0

Jan.

0

0

0

0

0

0

0

0

0

0

0

~

Feb.

0

0

0

0

0

0

0

0

0

0

0

March

0

0.214

0

0

0.355

0

5.35

0

1.58

2.24

1.39

3.62

1.82

7.92

5.90

April

7.93

0

44.7

10.0

24.2

0

7.46

123.8

1.68

3.95

18.4

45.4

1.38

1.13

4.09

May

0

0

38.1

3.88

0

0.003

0.031

3.55

0

0.147

0.279

0.050

0.003

0.055

2.10

June

0

0.242

0.436

0

0

0.001

0

0.811

0.014

1.06

0.173

2.36

0.409

0.006

0.051

July

0

0

0

0

0

0.014

0

0.078

0

0.044

0.326

0.071

0

0.036

6.17
05093000 SOUTH BRANCH TWO RIVERS AT PELAN, MN

LOCATION.--Lat 48°38'45", long 96°23'15", in NWV4 sec.31, T.160 N., R.44 W, Kittson County, 

Hydrologic Unit 09020312, on left bank 40 ft downstream from bridge on State Highway 11 and 0.25 

mi west of Pelan.

DRAINAGE AREA.--281 mi2 .

PERIOD OF RECORD.-August 1928 to September 1938, October 1953 to November 1956. Monthly 

discharge only for some periods, published in WSP 1308. Published as South Fork Two Rivers at 

Pelan 1928-38.

GAGE. Water-stage recorder. Datum of gage is 1,028.23 ft above mean sea level. Prior to Mar. 24,1936, 

chain gage at site 500 ft upstream at same datum. Mar. 24, 1936, to Sept. 30, 1938, chain gage at site 

40 ft upstream at same datum.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 2,040 ft3/s, July 10, 1956, gage height, 

10.90 ft; no flow at times each year.

Annual mean discharge

200

180

O 160

O

LU

140

LU

u.

m

O

Z 80

LU

CC 60

X

O

CO 40

Q

20

I I I I T T I 1 1 I I I I I I I I I I

I I I I I I I I i 1.1 III I I I I I I I I I I I

273
05093000 SOUTH BRANCH TWO RIVERS AT PELAN, MN--Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence; ng, statistic not given]

Maximum

' ' occurrence

October 5.22 1929

November 54.9 1957

December 1.00 1929

January 0 m

February 0 m

March 193 1929

April 345 1956

May 278 1930

June 243 1955

July 699 1956

August 18.2 1956

September 43.5 1956

Annual 111 1956

1 nv\ i i i i i i i i i .......

500 '-

Q 20° ~

§ 100 r 

O :

cc UJ 20-

fc] 10 r 

tu : 

u- 5 -

o ;

D 2 - 

0

z 1 -

o III OK u ^ -b -

CC

^ 0.2 -

W 0.1 r

Q : 

0.05 7

0.02 - 

0.01 ' ' I i i i i 1 i i i I' M

2 5 10

Minimum

Discharge , Discharge

(ft3/s) OT (ft3/s) 

x ' occurrence x '

0 m 0.670

0 m 4.12

0 m 0.090

0 m 0

0 m 0

0 m 17.5

7.40 1938 89.8

0.477 1934 68.2

0.040 1934 32.8

0 1934 55.8

0 m 2.75

0 m 3.97

0.766 1934 22.5

Annual flow duration

'

*

9

,

, , i > i , . i i . 1 1 1 1 1 . . i . . . . 1 1 . . i i i . i

20 30 40 50 60 70

Mean

Standard Coeffideviation cient of 

(ft3/s) variation

1.57 2.35

14.6 3.55

0.28 3.14

0 ng

0 ng

53.0 3.03

97.1 1.08

80.7 1.18

68.1 2.08

193 3.46

6.18 2.25

11.8 2.97

28.6 1.27

, i , , , , i i , , i

80 90 95

Percentage 

of annual 

discharge

0.24

1.50

0.03

0

0

6.36

32.6

24.7

11.9

20.2

1.00

1.44

100

-j

-

-

-

-j

-

-

-

-

_

-j

-

98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

274
05093000 SOUTH BRANCH TWO RIVERS AT PELAN, MN--Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

 3 65

<n

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

March

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

1.90

10.5

78.7

April

0

0.32

1.00

1.80

3.70

5.97

12.0

21.3

27.8

34.5

41.6

49.3

57.2

72.6

95.4

122

152

184

353

May

0.50

1.10

3.10

4.70

5.90

7.76

9.12

10.4

12.9

15.7

18.2

21.8

26.5

36.4

55.2

78.7

128

179

293

June

0

0

0.17

0.30

0.40

0.69

1.20

2.10

2.10

3.74

4.26

5.24

7.92

12.6

15.8

19.0

30.7

56.0

203

July

0

0

0

0

0

0

0

0.10

0.18

0.33

0.60

0.60

1.10

1.50

2.00

4.32

8.34

18.0

373

Aug.

0

0

0

0

0

0

0

0

0

0

0

0.10

0.10

0.25

0.78

1.10

5.55

9.55

17.3

Sept.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.10

0.48

6.21

19.0

Oct.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.10

0.80

0.80

2.90

4.90
05093000 SOUTH BRANCH TWO RIVERS AT PELAN, (UN-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

_ . Recurrence

?Kar*Ce ^terval probability (years)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 

(ft'/s)

20.4

52.5

84.9

149

410

1,040

1,650

2,620

3,500

4,500

5,620

7,310

3-day period 7-day period

18.0 13.9

45.7 37.4

73.6 61.4

129 109

358 301

931 748

1,490 1,160

2,430 1,790

3,290 2,330

4,290 2,930

5,450 3,590

ng ng

15-day period

7.56

22.8

39.2

72.4

205

496

742

1,090

1,370

1,650

1,940

ng

30-day period

3.95

13.4

24.0

45.9

132

306

439

609

731

846

954

ng

Probability of occurrence of annual low discharges

[ng, statistic not given]

Minimum mean discharge (f^/s)

Number of consecutive days

Non- Recurexceed- rence 

ance inter- 1 

prob- val 

ability (years)

0.05 20 ng

0.10 10 ng

0.20 5 ng

0.50 2 ng

3 7

ng ng

ng ng

ng ng

ng ng

14 30 60

ng ng ng

ng ng ng

ng ng ng

ng ng ng

90

ng

ng

ng

ng

120 183

ng 0

ng 0

ng 0

ng 0

276
05093000 SOUTH BRANCH TWO RIVERS AT PELAN, MN-Continued

Probability of occurrence of seasonal low discharges

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

intervai 

(years)

1 7 14 30 1

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

June- July- August

0.05

0.10

0.20

0.50

20

10

5

2

ng

ng

ng

ng

ng

ng

ng

ng

0

0

0

0

0

0

0

0.017

ng

ng

ng

ng

7 14 30

March-April-May

ng

ng

ng

ng

ng

ng

ng

ng

0

0

0

0

September-October-November

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

277
05093000 SOUTH BRANCH TWO RIVERS AT PELAN, MN-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft'/s)

Annual peak discharge, by year, and corresponding gage height

1929

1930

1931

1932

1933

1934

1935

March 21

May 13

April?

April 9

April 3

April8

March 29

6.40

10.18

-

8.02

4.90

2.44

5.24

718

1,810

77.0

1,140

242

46.0

242

1936

1937

1938

1954

1955

1956

April 20

May 3

May 13

June 18

June 7

July 10

3.25

5.00

4.04

3.70

8.07

10.90

178

506

285

266

1,040

2,040

Annual peak discharge, from highest to lowest, and corresponding gage height

1956

1930

1932

1955

1929

1937

1938

July 10

May 13

April 9

June?

March 21

May 3

May 13

10.90

10.18

8.02

8.07

6.40

5.00

4.04

2,040

1,810

1,140

1,040

718

506

285

1954

1933

1935

1936

1931

1934

June 1 8

April 3

March 29

April 20

April 7

AprilS

3.70

4.90

5.24

3.25

--

2.44

266

242

242

178

77.0

46.0

278
05093000 SOUTH BRANCH TWO RIVERS AT PELAN, MN-Continued

Monthly and annual mean discharges, in cubic feet per second

[Data were not rounded in accordance with U.S. Geological Survey publication standards; --, no data]

Year

1928

1929

1930

1931

1932

1933

1934

1935

1936

1937

1938

1954

1955

1956

1957

Oct.

5.22

0

0

0

0.100

0

0

0

0

0

0.800

0

0.019

3.25

Nov.

2.15

0

0

0

0

0

0

0

0

0

0.467

0.047

0.113

54.9

Dec.

1.00

0

0

0

0

0

0

0

0

0

0.100

0.023

0.016

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

--

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

March

192.9

0

4.57

0.613

3.92

0

21.7

0

0

4.01

0

0

0

April

64.5

67.7

18.2

239.2

80.0

8.79

85.0

52.2

23.9

7.40

97.9

76.9

345.0

May

19.6

277.8

6.75

72.5

8.48

0.477

17.2

6.67

111.8

92.2

73.4

32.3

167.1

--

June

9.30

9.33

2.73

1.03

3.98

0.040

2.47

0.270

6.98

6.68

82.9

243.4

56.7

--

July

0.977

5.58

0.858

0.242

0.016

0

0.287

0

8.53

0.039

4.15

5.54

698.9

-
05094000 SOUTH BRANCH TWO RIVERS AT LAKE BRONSON, MN

LOCATION.--Lat 48°43'50", long 96°39'50", in SW1 /4SW1 /4 sec.30, T.161 N., R.46 W., Kittson County, 

Hydrologic Unit 09020312, on left bank 70 ft upstream from culvert on U.S. Highway 59 at Lake 

Bronson and 3.4 mi downstream from dam at outlet of Bronson Lake.

DRAINAGE AREA.--444 mi2 .

PERIOD OF RECORD.-September 1928 to November 1936, April to September 1937, April 1941 to 

October 1943, April to December 1944, April 1945 to September 1947, October 1953 to September 

1981, April 1985 to current year. Monthly discharge only for some periods, published in WSP 1308. 

October 1981 to March 1985, annual maximums only. Published as South Fork Two Rivers at 

Bronson prior to 1941.

GAGE.--Water-stage recorder. Datum of gage is 928.53 ft above mean sea level (Minnesota Department 

of Transportation benchmark). Prior to Nov. 23, 1953, nonrecording gage at bridge 100 ft downstream 

at datum 2.00 ft higher. Nov. 23, 1953, to Oct. 5,1963, water-stage recorder at same site at datum 2.00 

ft higher.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 5,410 ft3/s, Apr. 5, 1966, gage height, 

18.23 ft; no flow at times.

500

O 400

O UJ 

W

DC

Annual mean discharge

200

100

i i i i i i i r i i r i i i r i

o in o in o in

O) O) O) O) of) O)

o m

O) O)

280
05094000 SOUTH BRANCH TWO RIVERS AT LAKE BRONSON, MN»Continued

Statistics of monthly and annual mean discharges

Maximum

Month

October

November

December

January

February

March

April

May

June

July

August

September

Annual

Discharge 

(ft3/s)

153

87.5

34.5

12.1

23.6

362

1,980

1,340

1,340

1,140

1,350

525

312

Water year 

of 

occurrence

1958

1957

1992

1992

1981

1986

1966

1970

1970

1956

1993

1957

1966

Minimum

Discharge 

(ft3/s)

0.400

0.381

0.131

0.116

0.120

0.658

0.539

0.984

1.43

0.437

0.089

0

2.89

Water year 

of 

occurrence

1991

1990

1987

1987

1987

1934

1991

1991

1980

1988

1988

1937

1934

Discharge 

<ft3/s))

19.0

11.2

4.59

2.81

3.20

59.8

398

189

161

106

48.2

45.7

87.5

Mean

Standard 

deviation 

(ft3/s)

34.5

19.3

5.74

2.56

4.07

89.6

387

274

268

223

189

107

76.6

Coefficient of 

variation

1.81

1.72

1.25

0.91

1.27

1.50

0.97

1.45

1.66

2.11

3.93

2.34

0.88

Percentage 

of annual 

discharge

1.82

1.07

0.44

0.27

0.31

5.70

37.9

18.1

15.4

10.1

4.60

4.36

100

Annual flow duration

Q

Z

0

O 

LU

03

CC 

LU 

CL

1-

LU 

LU

LL

O

CD

o

z

LU

O

cc

I

o

03

O

1.UUU

700

500

400

300

200

100

70

50 

40

30

20

10

7

c

4

3

2

1

0.7

0.5 

0.4

0.3

0.2

n 1

1

j-

-

-

r

;

j-

'-

-

-

r

I

1

-

L

j-

-

-

r

~

1

r

L

,

1 | 1 1 1 1 | 1 1 1 1 1 , 1 1 1 | 1 1 1 1 | 1 1 1 1 | 1 1 1 1 | , I 1 1 | 1 1 I , | , , 1 1 | 1 1 I I | III | , 1

-:

e _

-

 -_

:

^

j

. :

-

* i

 ;

9 J

_

^ 

9 J

* * . j

 ~

;

* * -

-.

. :

-

-

i , i i , i , , , , , , , , , i , , i , i , , , , 1 1 , i , i , , , , i , , , , i , , , , i , , , i i , , , i , ,

10 20 30 40 50 60 70 80

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

90 95 98

281
05094000 SOUTH BRANCH TWO RIVERS AT LAKE BRONSON, MN-Cont

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0.29

0.34

0.47

0.64

1.00

1.40

1.40

1.70

2.00

2.00

2.30

2.30

2.70

2.70

3.20

3.20

4.40

5.20

9.95

Feb.

0.18

0.38

0.55

0.80

0.97

1.20

1.40

1.40

1.70

1.70

1.70

2.10

2.10

2.50

3.00

3.00

3.70

5.45

9.94

March

0.46

0.63

1.10

1.10

1.60

1.60

2.10

2.10

3.00

3.42

3.85

4.54

5.95

10.2

17.0

34.2

57.2

131

417

April

2.10

4.35

7.76

15.8

24.8

33.7

50.8

73.2

102

139

184

234

299

382

496

662

904

1,220

1,780

May

2.00

3.67

5.08

7.28

12.1

16.1

20.7

25.6

31.4

38.1

49.5

72.7

103

142

213

290

377

541

929

June

1.10

2.00

3.83

4.93

5.62

7.88

11.0

14.0

17.2

21.8

28.8

38.3

52.3

74.0

127

210

299

429

795

July

0.53

1.30

1.80

2.62

3.74

4.26

4.98

5.52

7.36

9.31

12.6

16.0

20.2

26.3

39.2

58.3

109

214

646

Aug.

0.24

0.71

1.00

1.40

1.40

2.10

2.10

2.10

3.36

3.78

4.40

4.82

6.12

7.33

9.94

14.4

22.5

67.3

216

Sept.

0.24

0.60

0.81

1.10

1.50

1.50

2.00

2.00

2.81

3.25

3.70

4.33

5.47

7.35

11.0

19.8

47.5

116

261

Oct.

0.41

0.84

1.10

1.30

1.70

1.70

2.20

2.70

3.50

4.44

4.87

5.30

6.27

8.00

11.7

18.5

27.6

49.3

102
05094000 SOUTH BRANCH TWO RIVERS AT LAKE BRONSON, MN~Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

Recurrence

XC i_ 1.-II*. interval probability .

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum

instantaneous 

(ft3/s)

ng

337

462

667

1,280

2,330

3,100

4,140

4,940

5,770

6,610

7,740

3-day period 7-day period

57.3 41.0

166 128

275 219

478 394

1,170 1,000

2,320 2,040

3,090 2,730

3,990 3,520

4,590 4,040

5,120 4,490

5,590 4,890

ng ng

15-day period

25.0

83.9

148

274

730

1,520

2,040

2,630

3,010

3,350

3,630

ng

30-day period

15.8

53.3

94.5

176

477

1,020

1,380

1,810

2,090

2,340

2,560

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (ftVs)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 0.015

0.10 10 0.098

0.20 5 0.247

0.50 2 0.836

3 7

0.015 0.050

0.103 0.123

0.264 0.287

0.890 0.939

14 30 60

0.092 0.187 0.302

0.183 0.295 0.451

0.354 0.492 0.710

0.978 1.18 1.54

90

0.387

0.569

0.884

1.90

120 183

0.458 0.947

0.647 1.21

0.982 1.71

2.17 3.81

283
05094000 SOUTH BRANCH TWO RIVERS AT LAKE BRONSON, MN-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

0.252 0.258

0.375 0.385

0.592 0.608

1.30 1.35

0.264

0.392

0.619

1.39

0.298

0.441

0.694

1.55

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0.042 0.103

0.193 0.282

0.515 0.726

1.84 2.70

0.235

0.431

0.845

2.89

0.544

0.803

1.35

4.20

0.177

0.338

0.631

1.60

7 14 30

March-April-May

0.202

0.393

0.753

2.02

0.343

0.514

0.814

!3.00

0.679

1.10

2.01

6.85

September-October-November

0.153

0.246

0.434

1.25

0.214

0.338

0.587

1.66

0.294

0.429

0.695

1.91

0.353

0.525

0.876

2.58

'Graphical interpretation.

284
05094000 SOUTH BRANCH TWO RIVERS AT LAKE BRONSON, MN-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1929

1930

1931

1932

1933

1934

1935

1936

1937

1941

1942

1943

1944

1945

1946

1947

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

March 20

May 15

April 9

April 1 1

April 4

April 10

April 13

April 19

May 4

April 1 1

April 1

April 1 1

June 12

April 16

March 26

June 17

June 16

June 9

April 24

JulyS

September 23

AprilS

April 1 1

March 26

June 13

AprilS

June 14

April 15

AprilS

9.00

10.90

6.00

9.70

7.58

5.00

7.21

6.64

7.02

10.09

12.05

8.31

7.46

6.96

7.03

9.07

7.03

8.33

12.79

10.52

6.29

8.60

8.72

6.86

12.82

7.56

10.88

12.30

18.23

940

1,820

300

1,310

415

64.0

565

358

594

1,580

2,210

1,050

820

670

668

1,290

567

1,020

2,650

1,810

355

1,110

1,270

451

2,960

1,570

2,210

2,780

5,410

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

April 21

July 19

April 14

April 14

AprilS

April 15

March 14

April 24

July 6

April 1

AprilS

April 12

April 22

AprilS

June 30

April 2

March 8

April 3

June 26

March 29

March 27

March 24

April 19

April 1

July 13

April 2

August 10

March 26

11.43

11.08

14.01

14.51

9.00

8.50

10.18

11.35

10.37

7.24

5.06

12.12

13.17

6.90

5.39

7.94

9.33

6.45

12.16

11.47

7.62

8.46

10.78

7.10

11.35

10.82

12.87

--

2,430

2,290

3,520

4,140

1,500

1,480

800

2,460

1,960

980

219

2,770

3,340

820

340

1,040

1,530

623

2,790

2,510

996

1,170

2,100

784

2,160

1,870

3,050

850

Annual peak discharge, from highest to lowest, and corresponding gage height

1966

1970

1969

1979

1993

1962

1985

1965

1978

1956

1986

1974

1967

1968

AprilS

April 14

April 14

April 22

August 10

June 13

June 26

April 15

April 12

April 24

March 29

April 24

April 21

July 19

18.23

14.51

14.01

13.17

12.87

12.82

12.16

12.30

12.12

12.79

11.47

11.35

11.43

11.08

5,410

4,140

3,520

3,340

3,050

2,960

2,790

2,780

2,770

2,650

2,510

2,460

2,430

2,290

1942

1964

1991

1989

1975

1992

1930

1957

1941

1963

1983

1971

1972

1932

April 1

June 14

July 13

April 19

July 6

April 2

May 15

JulyS

April 1 1

AprilS

March 8

AprilS

April 15

April 1 1

12.05

10.88

11.35

10.78

10.37

10.82

10.90

10.52

10.09

7.56

9.33

9.00

8.50

9.70

2,210

2,210

2,160

2,100

,960

,870

,820

,810

,580

,570

,530

,500

,480

,310

285
05094000 SOUTH BRANCH TWO RIVERS AT LAKE BRONSON, MN-Continued

Annual peak discharge and corresponding gage height-Continued

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(frVs)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, from highest to lowest, and corresponding gage height Continued

1947

1960

1988

1959

1943

1982

1955

1987

1976

1929

1994

1944

1980

1973

1990

June 17

April 11

March 24

AprilS

April 11

April 2

June 9

March 27

April 1

March 20

March 26

June 12

AprilS

March 14

April 1

9.07

8.72

8.46

8.60

8.31

7.94

8.33

7.62

7.24

9.00

--

7.46

6.90

10.18

7.10

1,290

1,270

1,170

1,110

1,050

1,040

1,020

996

980

940

850

820

820

800

784

1945

1946

1984

1937

1954

1935

1961

1933

1936

1958

1981

1931

1977

1934

April 16

March 26

April 3

May 4

June 16

April 13

March 26

April 4

April 19

September 23

June 30

April 9

AprilS

April 10

6.96

7.03

6.45

7.02

7.03

7.21

6.86

7.58

6.64

6.29

5.39

6.00

5.06

5.00

670

668

623

594

567

565

451

415

358

355

340

300

219

64.0

286
05094000 SOUTH BRANCH TWO RIVERS AT LAKE BRONSON, (UN-Cont

Monthly and annual mean discharges, in cubic feet per second

[Data were not rounded in accordance with U.S. Geological Survey publication standards; --, no data]

Year

1929

1930

1931

1932

1933

1934

1935

1936

1937

1941

1942

1943

1944

1945

1946

1947

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

Oct.

10.0

5.50

4.94

4.44

2.88

1.62

4.60

3.25

23.9

--

131.1

6.85

0.887

6.65

34.2

1.24

5.32

4.94

8.25

10.6

153.0

1.74

22.4

2.77

2.54

7.15

2.59

4.92

99.4

10.2

2.07

74.9

3.71

15.8

2.06

Nov.

8.13

4.93

4.19

5.41

3.87

1.25

3.72

3.47

-

23.6

3.36

_

23.0

12.6

3.34

0.867

4.00

3.78

87.5

77.0

1.12

11.3

2.03

1.36

9.85

1.21

6.05

16.0

3.23

2.79

31.1

2.45

35.5

11.0

Dec.

3.71

2.82

2.95

4.42

2.74

0.665

2.24

2.24

--

5.99

2.03

11.6

5.58

5.08

1.16

2.98

3.30

9.87

13.8

0.555

4.30

1.67

4.43

3.40

0.745

4.77

13.8

3.28

2.26

9.92

2.07

4.54

4.55

Jan.

2.16

1.98

2.16

3.48

2.00

0.465

1.00

1.74

-

3.00

1.71

3.41

3.20

2.45

2.72

3.58

7.42

8.48

0.265

4.78

1.44

3.63

1.32

0.600

4.65

10.8

1.71

1.55

5.43

1.97

3.53

2.55

Feb.

2.00

1.00

2.00

2.43

1.36

0.400

0.800

1.50

~

2.57

2.59

2.41

1.38

6.36

2.46

3.88

5.51

2.12

0.218

4.79

13.5

3.21

1.01

0.600

4.53

8.91

1.16

1.35

4.83

1.67

2.51

2.79

March

311.9

1.52

24.9

2.55

14.6

0.658

29.5

2.10

~

154.4

35.3

220.4

12.5

2.80

14.9

34.2

158.8

2.16

26.3

4.95

26.7

30.3

28.9

0.765

4.52

11.7

22.7

125.3

3.31

3.06

32.2

65.6

April

160.7

159.6

83.1

360.8

191.5

20.0

163.8

83.4

453.9

675.4

459.0

79.9

417.9

248.4

184.4

208.5

256.8

711.8

263.4

47.7

372.7

534.2

23.1

369.6

287.2

196.3

907.0

1,977

1,157

69.0

1,158

751.4

516.6

444.6

May

36.1

440.5

15.6

117.3

21.2

2.85

35.4

18.8

182.1

41.2

456.5

253.9

13.2

197.5

29.8

33.8

135.2

70.0

445.2

108.7

14.8

74.4

55.2

14.0

655.4

23.9

118.8

403.9

913.2

664.5

5.66

299.1

1,338

58.3

42.9

June

23.0

20.3

8.97

8.06

14.2

1.83

7.24

2.93

13.9

178.2

45.7

607.3

402.7

44.0

5.76

478.3

167.7

369.6

192.5

233.5

6.74

42.6

53.5

2.74

1,031

20.8

742.9

188.4

250.3

110.0

502.8

104.3

1,336

13.5

31.0

July

7.39

14.4

4.98

4.41

2.28

1.37

4.46

1.69

2.30

11.6

5.83

113.7

55.9

16.2

15.0

32.3

9.79

24.9

1,136

725.1

98.7

11.7

13.1

4.50

109.5

4.50

40.2

57.8

282.9

4.38

707.0

10.6

131.1

5.09

4.51
05094000 SOUTH BRANCH TWO RIVERS AT LAKE BRONSON, MN-Cont

Monthly and annual mean discharges, in cubic feet per second-Continued

[Data were not rounded in accordance with U.S. Geological Survey publication standards; --, no data]

Year

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

Oct.

3.98

7.94

4.39

4.15

7.47

0.780

3.92

5.60

1.03

6.13

_

112.9

5.59

0.430

1.57

21.6

0.400

76.0

34.6

34.8

Nov.

2.21

4.78

3.78

3.55

1.06

0.420

1.99

0.993

1.64

-

_

32.6

0.418

1.55

0.503

0.381

0.484

69.4

0.527

24.1

Dec.

1.86

2.59

2.89

3.28

0.463

2.06

1.29

2.55

5.04

--

_

16.8

0.131

1.38

0.549

0.378

0.413

34.5

0.443

9.59

Jan.

2.96

1.86

2.23

1.99

0.598

2.52

1.94

2.14

0.989

-

_

4.82

0.116

0.661

0.338

0.322

0.346

12.1

0.472

6.08

Feb.

6.01

1.70

1.67

1.68

0.847

1.85

2.29

1.83

23.6

-

_

2.54

0.120

0.600

0.177

0.291

2.90

12.5

0.520

3.94

March

46.2

1.61

1.26

59.0

2.76

2.04

14.7

3.32

39.5

--

_

361.8

200.7

253.3

1.49

115.9

10.2

200.8

5.93

199.5

April

5.57

882.1

607.7

207.7

35.8

778.3

992.1

216.9

9.71

-

280.9

818.6

288.3

165.2

407.2

60.1

0.539

1,010

201.1

112.3

May

5.46

634.7

526.3

10.4

3.87

103.1

489.8

4.14

6.71

--

211.8

574.8

35.2

4.34

35.9

3.50

0.984

170.9

46.2

24.6

June

3.38

253.2

130.1

7.81

13.9

27.9

203.2

1.43

36.9

--

482.8

33.6

9.43

3.37

68.0

6.69

13.4

20.5

107.8

10.3

July

4.15

12.3

474.7

4.16

2.28

102.3

52.8

3.12

34.3

--

385.6

14.0

7.52

0.437

17.3

10.2

527.4

16.8

340.4

29.5
05095500 TWO RIVERS BELOW HALLOCK, MN

LOCATION.--Lat 48°46'50", long 97°02'25", in NE1 /4SE1 /4 sec.7, T.161 N., R.49 W., Kittson County, 

Hydrologic Unit 09020312, on downstream side of highway bridge, 4 mi west of Hallock and 5 mi 

upstream from North Branch Two Rivers.

DRAINAGE AREA.--644 mi2 .

PERIOD OF RECORD.-March 1945 to September 1955.

GAGE.-Chain gage. Datum of gage is 780 ft, from topographic map.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 3,690 ft3/s, May 13, 1950, gage height, 

25.78 ft, from graph based on gage readings, backwater from Red River of the North; no flow at times 

in many years.

500

Annual mean discharge

sLU 

W

cc at

Q.

LU

u_

o

m

O

400

200

LU 

(3 

DC 

<

O

100

i i i i i i i i r i i i i i i r

I I I I i i i i i i i 1

inoinoinoinoino '-'-cvicvioo tnomom

I I I I I I I I

§

m o in o in o in

O) O5 O5 O5 O5 O) O)

289
DISCHARGE, IN CUBIC FEET PER SECOND

p p op p

fo o> *-oi vi -L to w -t»-oi ooo o 

o

ro8

m 

o 

5 8

Ho

T|

H w

m 

O o

Is

CO

m 

0 o> > ° mxO

m 

m 

o 

m o

> </3 > 5- <- ^ >

3 $ c E. E x* xf 

3 ^ era X g ^ 3.

c o c 

BL 3 £

y

K,

-J OO O <^> > KJ O 

~J yi OO 4*- KJ O O

^_

O O 00 O O O 

KJ O O O 4^ ON O

KJ b b 4>- ^ o

o u>

VO vo vo vo vo VO vo

ul K> KJ KJ KJ KJ u>

»« »__t (>J |^

f~^t »_i ^^ oo vo ~g t>J

UJ --J i ' p oo oo O\

--J 4x S>

~-J vo NJ ~-J O NJ 4^

bo lf»

 >-+ ~ O

cy* oo NJ oo ON ^* O

O p U> U>

t S B - - *

2 2? fc* 0

^ 1 § S s- i i i

51 ^ or Q

vo ON oo S>

ON 4^ O

 O

ty» UJ i oo

o o o o

"£ O KJ

oo oo 

vO vo vo vo

ty> vo U> 4il

[^

vo KJ S> <~r\

^1 KJ O

OJ 4Sh 4Sh

4^ KJ KJ 4^-

4^ b 4^

^- oo 1^1

SJ O

O U> 00

oo u> u> oo

4»- O O O

O 4>- 

4^. -g oo 
05095500 TWO RIVERS BELOW HALLOCK, MN-Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0.10

0.10

0.10

0.10

0.20

0.20

0.30

0.30

0.39

0.45

0.89

1.70

3.00

3.50

4.50

6.00

7.71

0

Feb.

0

0

0

0

0.10

0.10

0.10

0.20

0.20

0.20

0.20

0.27

1.70

2.80

2.80

3.40

4.00

4.70

7.55

March

0

0

0.20

0.26

0.33

0.33

0.55

1.50

1.90

2.50

3.20

3.20

4.27

4.79

5.67

7.43

13.3

66.2

457

April

3.58

6.87

22.1

46.0

71.9

90.7

120

160

242

293

338

379

419

469

561

684

843

1,060

1,540

May

6.31

9.67

18.1

25.9

31.6

37.1

45.7

51.8

57.8

73.3

101

131

178

239

312

395

575

1,090

2,430

June

1.70

4.72

8.22

12.6

20.2

28.9

36.6

44.7

53.2

69.9

91.7

110

131

161

253

363

489

656

871

July

0.10

1.90

2.50

3.91

4.69

5.70

6.41

8.68

11.1

14.3

17.8

21.2

28.4

39.3

62.5

98.1

176

297

448

Aug.

0

0.32

0.41

0.65

0.65

1.30

1.70

2.10

2.70

3.40

5.84

9.47

18.1

23.8

21.1

34.1

44.8

60.7

83.5

Sept.

0

0.10

0.20

0.50

0.63

0.99

1.20

1.20

1.60

2.00

3.10

3.90

6.37

8.80

12.5

16.2

25.6

52.0

120

Oct.

0

0.10

0.34

0.55

0.70

0.89

1.40

1.40

1.90

2.40

3.00

10.5

16.5

21.9

26.5

32.2

50.0

98.5

163
05095500 TWO RIVERS BELOW HALLOCK, MN-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

_ . Recurrence Exceedance . . , 

. . ..... interval probab,l,ty (yearg)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 3-day period 7-day period 15-day period 30-day period 

(ft3/s)

92.1

194

282

434

932

1,840

2,560

3,540

4,310

5,110

5,940

7,060

72.5 63.1

167 147

253 225

406 364

919 846

1,870 1,770

2,610 2,510

3,600 3,540

4,370 4,350

5,150 5,180

5,940 6,030

ng ng

44.2

107

166

278

686

1,540

2,280

3,350

4,240

5,200

6,210

ng

33.1

77.2

119

198

500

1,180

1,820

2,810

3,700

4,700

5,820

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (frVs)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 0

0.10 10 0

0.20 5 0

0.50 2 0.080

3

0

0

0

0.083

7 14 30 60

0000

0000

000 0.055

0.107 0.116 0.153 0.262

90

0.130

0.183

0.286

0.739

120 183

0.223 0.482

0.354 0.766

0.608 1.36

1.62 4.17

292
05095500 TWO RIVERS BELOW HALLOCK, MN-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0.160

0

0

0

0.180

0

0

0

0.188

0

0

0

0.229

June-July-August

0.05

0.10

0.20

0.50

20

10

5

2

0

0.094

0.314

1.32

0

0.094

0.351

1.74

0

0.118

0.477

2.44

0

0.469

1.22

4.48

0

0

0.066

0.989

7 14 30

March-April-May

0

0

0.072

1.10

0

0

0.075

1.27

0.273

0.426

0.789

3.31

September-October-November

0

0

0

0.461

0

0

0

0.650

0

0

0.046

0.863

0

0

0.265

1.77

293
05095500 TWO RIVERS BELOW HALLOCK, MN-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(fta/s)

Annual peak discharge, by year, and corresponding gage height

1945

1946

1947

1948

1949

1950

March 28

March 26

June 19

April 26

April 15

May 13

-

11.07

14.74

22.84

14.47

25.78

856

670

1,280

2,270

1,040

3,690

1951

1952

1953

1954

1955

April 17

April 14

June 8

June 19

June 13

15.64

10.24

5.42

10.80

12.97

1,350

392

146

553

902

Annual peak discharge, from highest to lowest, and corresponding gage height

1950

1948

1951

1947

1949

1955

May 13

April 26

April 17

June 19

April 15

June 13

25.78

22.84

15.64

14.74

14.47

12.97

3,690

2,270

1,350

1,280

1,040

902

1945

1946

1954

1952

1953

March 28

March 26

June 19

April 14

JuneS

--

11.07

10.80

10.24

5.42

856

670

553

392

146

294
05095500 TWO RIVERS BELOW HALLOCK, MN-Continued

Monthly and annual mean discharges, in cubic feet per second

[Data were not rounded in accordance with U.S. Geological Survey publication standards; --, no data]

Year

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

Oct.

39.0

3.25

29.5

0.171

12.7

168.3

25.1

0.416

3.51

1.38

Nov.

14.2

6.43

25.9

1.70

21.7

25.2

10.5

4.09

0.570

2.77

Dec.

4.09

8.48

12.0

4.88

6.55

11.4

1.03

0.368

0.261

1.34

Jan.

0.439

6.46

2.43

0.639

3.36

8.40

0.335

0.048

0.100

0.206

Feb.

0.189

3.68

0.059

0

2.53

5.41

2.02

6.61

0.568

0.207

March

299.2

212.1

6.75

0.790

0.674

1.88

10.6

3.76

6.68

4.25

0.448

April

456.0

286.7

184.2

829.6

505.9

826.7

899.5

124.3

30.0

209.6

441.7

May

268.5

44.0

36.2

535.0

76.3

2,523

400.0

6.79

22.2

158.0

91.0

June

58.5

8.11

587.9

99.4

59.1

612.5

52.6

4.42

70.1

217.8

412.2

July

21.7

9.62

106.3

300.9

7.05

354.3

5.34

0.913

4.03

14.0

57.9
05096000 NORTH BRANCH TWO RIVERS NEAR LANCASTER, MN

LOCATION.--Lat 48°53'21", long 96°40'01", in NEV4 sec.l, T.162 N., R.47 W., Kittson County,

Hydrologic Unit 09020312, on downstream side of highway bridge, 0.5 mi upstream from State ditch 

85 and 7 mi northeast of Lancaster.

DRAINAGE AREA.--32 mi2 , approximately.

PERIOD OF RECORD.--April 1929 to September 1938, April 1941 to September 1955. Prior to 1941, 

published as North Fork Two Rivers near Lancaster.

GAGE. Staff gage. Datum of gage is 963.69 ft above mean sea level, adjustment of 1912 (levels by U.S. 

Army Corps of Engineers).

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 912 ft3/s, May 20, 1950, gage height, 

6.25 ft; no flow during several months each year.

100

O 80

O

UJ

W

DC

111

0_

UJ 60 

UJ

LL

O 

m

o

Z 40

UJ 

O 

DC

W 20 

Q

Annual mean discharge

1 1 1 1 1 1 1 1 1 1 1 1

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

LOQLO 

CD O) O) 

CDGDCD

OLO * T 

CftCft

LOOLO 

CM 00 00 

O)O)Cft

296
05096000 NORTH BRANCH TWO RIVERS NEAR LANCASTER, MN-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence]

Month

October

November

December

January

February

March

April

May

June

July

August

September

Annual

100 

70 '-

!o°:

30 - 

i 20 1

O :

UJ 10 r

o: 7 '-

LLJ 5 r 

0. 4 ~ 

H 3 7

ft 2r 

LL :

lo.U

0 0.5 r

Z 0.4 -

~ 0.3 - 

UJ O 0.2 r 

CC :

X 0.1 r 

GO 0.07 '-

S 8:8i:

0.03 -

0.02 r 

n m

Maximum

Discharge *****

(ft3/s) °f 

x ' occurrence

57.7 1942

8.60 1945

0.397 1945

0.213 1948

0.048 1948

38.6 1942

108 1942

635 1950

235 1950

86.6 1950

5.76 1950

47.1 1941

88.7 1950

i , , |

1 . . ,,!,,,!,,,,

Minimum Mean

n. . Water year _, . Standard Coeffi- Discharge / Discharge . . .. . . . m3/cv of 3 s deviation cientof

(n/s; occurrence (" s; (ft3/s) variation

0 m 3.46 12.2 3.51

0 m 0.900 2.11 2.36

0 m 0.060 0.12 1.93

0 m 0.010 0.05 3.93

0 m 0 0.01 4.80

0 m 3.48 9.81 2.82

0.100 1953 26.7 33.2 1.24

0.006 1934 38.8 126 3.24

0 m 16.4 47.0 2.86

0 m 5.24 17.5 3.34

0 m 0.630 1.48 2.37

0 m 2.57 9.39 3.65

0.096 1934 8.52 18.4 2.16

Annual flow duration

 i i i i i i i i i 1 1 . 1 1 1 1 1 1 1 1 1 1 , i i | i i i i | i i i i | iii |

 i i , , , i , , , , i , , , 1 1 1 1 , , i , i , , i , , , , i i , i i i i i . i .

Percentage 

of annual 

discharge

3.52

0.91

0.07

0.01

0

3.54

27.2

39.5

16.7

5.33

0.64

2.61

100

.:

-i

-m

-E

1

10 20 30 40 50 60 70 80

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

90 95 98

297
05096000 NORTH BRANCH TWO RIVERS NEAR LANCASTER, MN-Cont

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

8 65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.10

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

March

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.25

15.0

April

0

0

0.10

0.26

0.43

0.69

1.10

1.80

2.90

5.18

7.76

11.5

15.9

23.4

32.4

42.3

52.9

82.7

128

May

0

0.10

0.10

0.17

0.30

0.40

0.52

0.69

0.90

1.20

2.10

4.44

6.65

12.0

19.1

30.5

46.1

63.3

130

June

0

0

0

0

0

0.10

0.10

0.16

0.27

0.57

0.94

2.00

2.50

4.88

8.17

14.4

19.1

29.9

87.0

July

0

0

0

0

0

0

0

0

0

0

0

0.10

0.20

0.40

0.64

1.30

3.20

7.09

27.6

Aug.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.10

0.18

0.49

1.40

5.00

Sept.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.20

0.40

1.00

2.00

5.35

Oct.

0

0

0

0

0

0

0

0

0

0

0

0

0

0.10

0.19

0.37

2.10

6.03

15.3
05096000 NORTH BRANCH TWO RIVERS NEAR LANCASTER, MN~Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Recurrence

probability '£ J

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum

instantaneous 

(ftS/s)

1.80

6.30

11.7

23.9

83.4

252

426

716

980

1,280

1,620

2,120

Maximum mean discharge 

(ft3/s)

3-day period 7-day period 15-day period

1.22 0.916 0.598

4.38 3.20 2.07

8.30 6.03 3.91

17.3 12.6 8.25

62.9 46.8 32.2

197 155 115

338 276 216

576 496 411

796 711 616

1,050 970 878

1,340 1,280 1,200

ng ng ng

30-day period

0.328

1.17

2.27

4.94

20.7

80.5

159

322

501

742

1,050

ng

Probability of occurrence of annual low discharges

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 ng

0.10 10 ng

0.20 5 ng

0.50 2 ng

3 7

ng ng

ng ng

ng ng

ng ng

14 30 60 90

ng ng ng ng

ng ng ng ng

ng ng ng ng

ng ng ng ng

120 183

0 0

0 0

0 0

0 0

299
05096000 NORTH BRANCH TWO RIVERS NEAR LANCASTER, MN-Continued

Probability of occurrence of seasonal low discharges

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurrence

exceedance interval

probability (years)

14 30 14 30

0.05 

O.IO 

0.20 

0.50

0.05 

O.IO 

0.20 

0.50

20

10

5

2

20

10

5

2

ng 

ng 

ng 

ng

December-January-February

ng ng ng ng 

ng ng ng ng 

ng ng ng ng 

ng ng ng ng 

June-July-August

ng 

ng 

ng 

ng

0 0

0 0

0 0

0 0

March-April-May

ng ng ng 0 

ng ng ng 0 

ng ng ng 0 

ng ng ng 0

September-October-November 

0000 

0000 

0000 

0000

300
05096000 NORTH BRANCH TWO RIVERS NEAR LANCASTER, MN-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1930

1931

1932

1933

1934

1935

1936

1937

1938

1941

1942

1943

May 12

Aprils

April 15

May 26

April 9

April 15

April 14

April 30

June 2

September 25

April 4

Aprils

3.10

1.90

1.90

2.68

1.06

--

1.20

3.80

1.20

4.06

-

3.50

226

38.0

59.0

126

15.0

12.0

8.00

277

8.00

290

253

175

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

June 6

March 27

March 20

June 1 1

April 18

April 13

May 20

April 30

AprilS

June 29

June 15

April 22

3.52

2.88

2.38

3.40

3.68

--

6.25

2.91

1.22

0.75

1.97

2.92

203

124

56.0

217

281

50.0

912

173

21.0

4.00

50.0

151

Annual peak discharge, from highest to lowest, and corresponding gage height

1950

1941

1948

1937

1942

1930

1947

1944

1943

1951

1955

1933

May 20

September 25

April 18

April 30

April 4

May 12

June 1 1

June 6

Aprils

April 30

April 22

May 26

6.25

4.06

3.68

3.80

--

3.10

3.40

3.52

3.50

2.91

2.92

2.68

912

290

281

277

253

226

217

203

175

173

151

126

1945

1932

1946

1949

1954

1931

1952

1934

1935

1936

1938

1953

March 27

April 15

March 20

April 13

June 15

AprilS

AprilS

April 9

April 15

April 14

June 2

June 29

2.88

1.90

2.38

--

1.97

1.90

1.22

1.06

--

1.20

1.20

0.75

124

59.0

56.0

50.0

50.0

38.0

21.0

15.0

12.0

8.00

8.00

4.00

301
05096000 NORTH BRANCH TWO RIVERS NEAR LANCASTER, MN-Cont

Monthly and annual mean discharges, in cubic feet per second

[Data were not rounded in accordance with U.S. Geological Survey publication standards; , no data]

Year

1929

1930

1931

1932

1933

1934

1935

1936

1937

1938

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

Oct.

0

0

0

0

0

0

0

0

0

_

57.7

0

0

0.706

0.532

0

3.47

0

3.95

12.8

0.258

0

0

0.110

Nov.

0

0

0

0

0

0

0

0

0

_

4.73

0

0

8.60

0

0

1.12

0

3.78

2.21

0.090

0

0

0.100

Dec.

0

0

0

0

0

0

0

0

0

_

0.329

0

0

0.397

0

0

0.200

0

0.248

0.248

0.035

0

0

0.016

Jan.

0

0

0

0

0

0

0

0

0

_

0

0

0

0.052

0

0

0.213

0

0

0

0

0

0

0

Feb.

0

0

0

0

0

0

0

0

0

_

0

0

0

0

0

0

0.048

0

0

0

0

0

0

0

March

0

0.129

0

0.613

0

0

0

0

0.577

_

38.6

0

0

27.3

12.7

0

0

0

0

0

0

0.032

0

0

April

2.39

6.97

4.97

22.1

15.9

1.16

2.15

1.18

19.7

0.687

21.5

107.9

54.7

8.14

34.5

6.58

6.03

88.9

21.7

80.8

90.8

4.96

0.100

5.41

59.2

May

0.452

38.0

0.500

4.18

14.2

0.006

0.732

0.268

24.2

3.14

10.2

42.9

19.3

0.410

32.0

0.261

1.81

53.9

4.26

634.9

70.3

0.106

0.135

6.34

7.34

June

0.123

0.300

0.060

0.013

4.33

0

0.193

0

1.19

3.15

17.3

4.40

23.5

37.9

2.25

0

40.8

10.5

0.890

235.0

3.60

0.070

1.07

11.4

12.5

July

0

0.081

0.019

0

0

0

0.719

0

1.35

0

0.265

0

5.91

1.85

0.497

0

2.25

19.5

0.803

86.6

0.026

0

0.335

0.429

10.3
05096500 STATE DITCH 85 NEAR LANCASTER, MN

LOCATION.-Lat 48°52'02", long 96°40'01", in SWV4 sec.6, T.162 N., R.46 W., Kittson County, 

Hydrologic Unit 09020312, on left bank at upstream side of highway bridge, 1 mi upstream from 

North Branch Two Rivers, and 7 mi northeast of Lancaster.

DRAINAGE AREA.--95 mi2, approximately.

PERIOD OF RECORD.-April 1929 to September 1938, March 1942 to September 1955.

GAGE.-Staff gage. Datum of gage is 969.28 ft above mean sea level, adjustment of 1912 (levels by U.S. 

Army Corps of Engineers).

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 1,480 ft3/s, May 20, 1950; gage height, 

5.90 ft; maximum gage height, 6.30 ft, Mar. 29, 1942, backwater from ice; no flow for several months 

each year.

200

180

Annual mean discharge

140

120

LJJ

O

80

UJ 

£E 60

O

CO 40 

Q

20

I I I I I I I I I I I I I I I I I I I I

i i i i i i i i i

00 O) O) 

GO 00 00

I I I I I 

in o in o in

303
05096500 STATE DITCH 85 NEAR LANCASTER, (UN-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence; ng, statistic not given]

Maximum

Month

October

November

December

January

February

March

April

May

June

July

August

September

Annual

Discharge 

(ft3/s)

43.5

7.88

0.945

0.084

0

55.2

245

714

297

175

34.0

39.8

111

Water year 

of 

occurrence

1951

1945

1948

1948

m

1945

1942

1950

1950

1950

1950

1942

1950

Minimum

Discharge 

(ft3/s)

0

0

0

0

0

0

0.267

0.081

0.107

0

0

0

0.276

Water year 

of 

occurrence

m

m

m

m

m

m

1953

1934

1952

m

m

m

1934

Discharge 

(ft3/s)

3.70

1.37

0.070

0

0

5.35

62.2

78.2

39.6

14.3

3.60

4.24

17.1

Mean

Standard 

deviation 

(ft3/s)

9.74

2.57

0.21

0.02

0

14.0

64.2

151

65.0

36.6

7.89

9.84

24.4

Coefficient of 

variation

2.63

1.88

2.87

4.69

ng

2.62

1.03

1.94

1.64

2.56

2.19

2.32

1.43

Percentage 

of annuai 

discharge

1.74

0.64

0.04

0

0

2.52

29.3

36.8

18.6

6.71

1.70

2.00

100

Annual flow duration

o

z

0

o

HI

CO

CC 

HI 

D_

Hi

HI 

LL

o

CO

D

O

Z

HI

0

cc

X

GO

5

1.UUU

700

88

300

200

100

70

50 

40

30

20

10

7

5

4

3

2

1

0.7

0.5 

0.4

0.3

0.2

n 1

. , . | . .. . | ... . . . ... | .... | .... | .... | .... | .... | . . . i j . .. . | ... | i

j-

:_

-

-

~

'- '-

L 

-

r 

L 

~~-

 *

-

-

:

~r

^>

L 

-

- 

r . . i .... i . . ....... i ... . i .... i .... i .,,. i .... i .,,. i .. . . i ... i

1

-:

_:

-

-

~_

-_

J

.:

-

-

-

j.

-_

-

-

:

-_

-_

_:

-

-

:

10 20 30 40 50 60 70 80

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

90 95 98

304
05096500 STATE DITCH 85 NEAR LANCASTER, MN-Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

March

0.05

0.11

0.16

0.22

0.27

0.33

0.38

0.44

0.49

0.55

0.60

0.66

0.71

0.77

0.82

0.88

0.93

0.99

26.4

April

0

0

0.10

0.69

1.40

3.00

6.23

11.1

17.6

24.7

32.0

49.3

65.2

81.6

102

126

155

196

246

May

0.10

0.18

0.56

0.99

1.30

1.80

2.30

4.74

8.70

14.2

23.9

33.4

42.9

64.5

90.4

137

169

205

280

June

0

0

0.10

0.16

0.27

0.44

0.72

1.90

2.50

4.62

6.96

11.6

23.0

36.6

52.7

75.3

95.6

120

200

July

0

0

0

0

0

0.10

0.16

0.16

0.33

0.68

0.87

0.87

1.80

3.70

5.96

10.9

22.5

39.9

75.5

Aug.

0

0

0

0

0

0

0

0

0

0

0

0.10

0.39

0.86

1.90

4.10

6.13

11.7

21.7

Sept.

0

0

0

0

0

0

0

0

0

0

0

0

0.10

0.76

1.70

2.60

7.68

12.5

30.8

Oct.

0

0

0

0

0

0

0

0

0

0

0

0.18

0.49

0.74

0.90

2.00

5.81

11.7

23.9
05096500 STATE DITCH 85 NEAR LANCASTER, MN--Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

_ . Recurrence Exceedance . . .

«* ££

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 

(tf/s)

ng

33.5

45.2

65.2

132

272

399

602

786

1,000

1,250

1,640

Maximum mean discharge 

(ft3/s)

3-day period 7-day period 15-day period

7.38 6.67 4.34

18.3 15.9 11.4

28.8 24.7 18.5

48.4 41.3 32.4

120 104 87.0

266 241 210

387 364 319

560 552 485

700 713 626

846 892 778

998 1,090 943

ng ng ng

30-day period

2.24

6.86

11.9

22.4

67.0

173

269

415

536

667

806

ng

Probability of occurrence of annual low discharges

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 ng

0.10 10 ng

0.20 5 ng

0.50 2 ng

3 7

ng ng

ng ng

ng ng

ng ng

14 30 60 90

ng ng ng ng

ng ng ng ng

ng ng ng ng

ng ng ng ng

120 183

0 0

0 0

0 0

0 0

306
05096500 STATE DITCH 85 NEAR LANCASTER, MN-Continued

Probability of occurrence of seasonal low discharges

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurrence 

exceedance interval 

probability

14 30 14 30

0.05

0.10

0.20

0.50

0.05

0.10

0.20

0.50

20

10

5

2

20

10

5

2

ng 

ng 

ng 

ng

December-January-February

ng 

ng 

ng 

ng

ng ng

ng ng

ng ng

ng ng

June-July-August

0 0

0 0

0 0

0 0

March-April-May

ng ng ng 0 

ng ng ng 0 

ng ng ng 0 

ng ng ng 0

September-October-November 

0000 

0000 

0000 

0000

307
05096500 STATE DITCH 85 NEAR LANCASTER, MN-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

Year Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1929

1930

1931

1932

1933

1934

1935

1936

1937

1938

1942

1943

AprilS

May 19

April 9

April 18

April 18

April 12

Apirl 22

April 25

May 1

June 3

April5

June 6

3.28

4.23

3.12

4.90

3.52

1.14

-

-

-

3.42

-

4.47

102

160

99.0

202

112

11.0

47.0

22.0

180

60.0

298

190

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

June 6

May 3

March 22

June 13

May 2

April 13

May 20

April 30

Aprils

June 7

June 17

April 24

4.48

4.50

4.00

4.74

5.26

4.12

5.90

4.90

2.20

2.28

3.70

4.76

190

180

113

218

288

136

1,480

250

57.0

56.0

124

211

Annual peak discharge, from highest to lowest, and corresponding gage height

1950

1942

1948

1951

1947

1955

1932

1943

1944

1937

1945

1930

May 20

April 5

May 2

April 30

June 13

April 24

April 18

June 6

June 6

May 1

May 3

May 19

5.90

-

5.26

4.90

4.74

4.76

4.90

4.47

4.28

-

4.50

4.23

1,480

298

288

250

218

211

202

190

190

180

180

160

1949

1954

1946

1933

1929

1931

1938

1952

1953

1935

1936

1934

April 13

June 17

March 22

April 18

April 8

April 9

June 3

AprilS

June 7

Apirl 22

April 25

April 12

4.12

3.70

4.00

3.52

3.28

3.12

3.42

2.20

2.28

--

--

1.14

136

124

113

112

102

99.0

60.0

57.0

56.0

47.0

22.0

11.0

308
05096500 STATE DITCH 85 NEAR LANCASTER, MN--Continued

Monthly and annual mean discharges, in cubic feet per second

[Data were not rounded in accordance with U.S. Geological Survey publication standards; -, no data]

Year

1929

1930

1931

1932

1933

1934

1935

1936

1937

1938

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

Oct.

..

0

0

0

0

0

0

0

0

0.935

_

3.62

0

1.04

9.71

0.713

16.4

0

4.74

43.5

0.168

0

0

0.610

Nov.

..

0

0

0

0

0

0

0

0

0

_

0.870

0

7.88

1.90

0.237

6.13

0.130

5.92

6.32

0.007

0

0

0.663

Dec.

..

0

0

0

0

0

0

0

0

0

_

0

0

0.023

0

0

0.945

0

0.239

0.368

0

0

0

0.068

Jan.

0

0

0

0

0

0

0

0

0

_

0

0

0

0

0

0.084

0

0

0

0

0

0

0

Feb.

0

0

0

0

0

0

0

0

0

_

0

0

0

0

0

0

0

0

0

0

0

0

0

March

_

0

0.258

0

0

0

0

0

0

6.19

28.1

0

0

55.2

33.3

0

0

0

0

0

0

0

0

0

April

42.3

30.1

22.7

89.8

43.4

2.83

15.5

7.57

22.2

1.81

245.3

121.9

21.5

125.2

65.5

15.1

126.8

71.9

61.7

195.2

13.8

0.267

33.2

116.7

May

1.85

71.7

2.52

27.4

18.1

0.081

1.71

5.65

50.4

30.4

180.2

94.1

1.08

115.1

8.68

4.25

235.6

31.2

714.5

198.2

0.223

0.223

47.2

35.2

June

0.550

4.33

0.313

0.337

12.9

0.157

0.270

0.193

3.96

31.4

42.1

108.1

82.7

8.42

0.483

99.4

84.0

4.50

296.9

41.6

0.107

15.1

51.3

60.3

July

0.065

2.70

0.210

0

0.297

0.277

0.361

0

4.55

1.00

0.610

44.8

24.1

1.01

0.135

37.7

29.3

3.93

174.9

0.039

0.013

1.70

2.32

12.3
05098700 HIDDEN ISLAND COULEE NEAR HANSBORO, ND

LOCATION.--Lat 48°57'10", long 99°25'35", in SE1 /4SW1 /4 sec.ll, T.163 N., R.68 W., TownerCounty, 

Hydrologic Unit 09020313, on right bank 400 ft downstream from bridge on county highway, and 

2.5 mi west of Hansboro.

DRAINAGE AREA.--38 mi2, approximately. 

PERIOD OF RECORD.-October 1961 to current year.

GAGE.-Water-stage recorder. Datum of gage is 1,615 ft above sea level, from topographic map. Prior to 

May 20, 1962, nonrecording gage 400 ft upstream at same datum.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 1,200 ft3/s, Apr. 23, 1979, gage height, 

10.50 ft, from floodmark, backwater from ice; no flow at times.

Annual mean discharge

<iU

18

QNO03S CO

m

Q_

tj 12

111 

UL

I"

O

Z 8

111* 

O 0 

CC. 6

O 

CO 4

Q

2

n

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

-

-

-

.

-

-

_

-

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 || Jl III

1 1

-

-

-

.

-

-

II.

_

.

-

1

o in o in moinoinoinoiooiooinoinoin Oi-1-CMCMcocoTj-smincocDts-ts-coco

O)O)O)O)O)O)O)O)O)O)O)O)O)O)O)O)O)

310
05098700 HIDDEN ISLAND COULEE NEAR HANSBORO, ND-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence]

Maximum

M ,h Discharge **"?*" Month 3/s)9 of 

v ' occurrence

October 1.05 1981

November 0.538 1981

December 1.02 1983

January 0.012 1994

February 11.4 1981

March 77.5 1992

April 117 1974

May 43.9 1974

June 9.34 1986

July 57.4 1993

August 17.1 1968

September 16.7 1968

Annual 13.8 1974

100 1 \J\J i _ I i T i i JTIIIJlT^TT^ll i i i i i i i i i i i i

70 '- 

<\n 

40- 

30 -

i 20 r

O :

ft 10 r 

05 7 r

£ ti1

H 3 r .

UJ o

UJ 2 r 

u_ :

0 « 1

5 :

D 0.7 r .

0 0.5 r 

Z 0.4 r

~ 0.3 -

LLJ

O 0.2 r

tr :

I 0.1 r

co O-07 r

Q 0.05 r

0.04 -

0.03 -

0.02 r

0.01 '- ' ' ' ' ' ' i I i ' i i ' ii

2 5 10

Minimum

Discharge Water year Discharge

(ft3/s) ° (ft3/s) ' occurrence

0 m 0.070

0 m 0.030

0 m 0.030

0 m 0

0 m 0.350

0 m 5.56

0.003 1963 22.0

0 m 4.44

0 m 1.14

0 m 3.09

0 m 1.07

0 m 0.640

0.003 1977 3.19

Annual flow duration

1 1 1 i > i i i i i 1 1 1 1 1 1 1 1 1 1 > 1 1 1 i i i i i i i

, , i , , , , i , , , , i , , , , i , , , , 1 1 i i i i i i ,

20 30 40 50 60 70

Mean

Standard Coeffi- Percentage 

deviation cient of of annual 

(ft3/s) variation discharge

0.21 2.92 0.18

0.10 3.34 0.08

0.18 5.47 0.08

0 5.74 0

1.98 5.74 0.90

14.0 2.51 14.4

30.7 1.39 57.3

9.31 2.09 11.6

2.35 2.06 2.97

10.5 3.41 8.04

3.49 3.26 2.78

2.92 4.55 1.67

3.25 1.02 100

i i . i i i i , i | , .

J

-

:

-j

-.

~

_

-

-_

*

-

:

-I

-.

-

-

!.,.,! , , , 1

80 90 95 98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

311
05098700 HIDDEN ISLAND COULEE NEAR HANSBORO, ND-Continu

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

March

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.20

0.89

4.57

12.1

33.0

April

0

0

0

0.06

0.08

0.16

0.44

0.62

1.20

1.70

3.53

5.03

6.68

8.44

13.2

19.8

28.9

50.8

101

May

0

0

0

0.02

0.04

0.06

0.08

0.14

0.18

0.24

0.43

0.58

0.77

1.40

1.80

2.50

4.86

10.3

24.9

June

0

0

0

0

0

0

0

0

0

0.02

0.03

0.05

0.09

0.11

0.19

0.44

0.98

2.20

5.36

July

0

0

0

0

0

0

0

0

0

0

0

0

0

0.04

0.10

0.33

1.00

2.50

10.6

Aug.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.16

1.90

Sept.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.14

2.40

Oct.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.08

0.17

0.29
05098700 HIDDEN ISLAND COULEE NEAR HANSBORO, ND-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

<ft3/s)

_ . Recurrence Exceedance

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 3-day period 7-day period 15-day period 30-day period 

(tf/s)

ng 0.069

7.40 1.03

15.4 3.44

35.2 12.1

140 75.2

433 238

715 349

1,140 461

1,500 520

1,870 563

2,250 593

2,760 ng

0.064

0.834

2.66

8.92

52.6

165

243

323

368

400

424

ng

0.041 0.021

0.540 0.295

1.72 0.963

5.74 3.31

33.4 20.0

103 62.6

150 91.8

197 121

223 137

242 149

255 157

ng ng

Probability of occurrence of annual low discharges

[ng, statistic not given]

Minimum mean discharge (frVs)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 ng

O.IO 10 ng

0.20 5 ng

0.50 2 ng

3 7 14 30

ng ng ng ng

ng ng ng ng

ng ng ng ng

ng ng ng ng

60

ng

ng

ng

ng

90 120 183

ng ng 0

ng ng 0

ng ng 0

ng ng 0

313
05098700 HIDDEN ISLAND COULEE NEAR HANSBORO, ND-Continued

Probability of occurrence of seasonal low discharges

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

ng ng

ng ng

ng ng

ng ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

ng ng

ng ng

ng ng

ng ng

ng

ng

ng

ng

0

0

0

0

ng

ng

ng

ng

7 14 30

March-April-May

0

0

0

0

0

0

0

0

0

0

0

0,033

September-October-November

ng

ng

ng

ng

0

0

0

0

0

0

0

0

314
05098700 HIDDEN ISLAND COULEE NEAR HANSBORO, ND-Continued

Annual peak discharge and corresponding gage height

[ , no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(tf/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

April 6

July 25

April 9

April 1 1

March 14

April 21

August 24

April 12

April 29

April 10

March 16

June 20

April 21

April 28

April 1

April 11

April 6

~

5.23

-

7.09

6.92

6.73

7.17

8.80

7.20

8.11

7.62

6.51

8.61

7.93

8.12

5.42

7.73

40.0

8.90

32.0

124

66.0

128

218

700

317

637

354

52.0

1,060

405

330

0.10

200

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

April 23

April 3

February 2 1

March 30

April 2

March 24

March 17

June 2 1

Aprils

April 4

AprilS

April 3

August 6

March 29

July 19

March 24

10.50

7.51

7.65

8.01

7.99

7.70

7.69

7.45

8.14

6.12

6.23

5.79

--

-

8.30

-

1,200

90.0

95.0

214

155

264

60.0

276

281

4.60

66.0

5.10

6.00

264

355

224

Annual peak discharge, from highest to lowest, and corresponding gage height

1979

1974

1969

1971

1975

1993

1972

1976

1970

1987

1986

1984

1992

1994

1968

1982

1978

April 23

April 21

April 12

April 10

April 28

July 19

March 16

April 1

April 29

Aprils

June 21

March 24

March 29

March 24

August 24

March 30

April 6

10.50

8.61

8.80

8.11

7.93

8.30

7.62

8.12

7.20

8.14

7.45

7.70

-

~

7.17

8.01

7.73

1,200

1,060

700

637

405

355

354

330

317

281

276

264

264

224

218

214

200

1983

1967

1965

1981

1980

1966

1989

1985

1973

1962

1964

1963

1991

1990

1988

1977

April 2

April 21

April 1 1

February 2 1

April 3

March 14

AprilS

March 17

June 20

April 6

April 9

July 25

August 6

April 3

April 4

April 1 1

7.99

6.73

7.09

7.65

7.51

6.92

6.23

7.69

6.51

--

-

5.23

-

5.79

6.12

5.42

155

128

124

95.0

90.0

66.0

66.0

60.0

52.0

40.0

32.0

8.90

6.00

5.10

4.60

0.100

315
w 

o>

05098700 HIDDEN ISLAND COULEE NEAR HANSBORO, ND-Continu

Monthly and annual mean discharges, in cubic feet per second

[Data were not rounded in accordance with U.S. Geological Survey publication standards]

Year

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

Oct.

0

0

0

0.248

0

0

0

0.505

0

0.009

0.049

0

0.052

0

0

0

0

0

0

1.05

0

0.096

0

0

0.010

0

0

0

0

0

0.004

0

0.317

Nov.

0

0

0

0.010

0

0

0

0.184

0

0.013

0.034

0

0.004

0

0

0

0

0

0

0.538

0

0.117

0

0

0

0

0

0

0

0

0.013

0

0.067

Dec.

0

0

0

0

0

0

0

0.046

0

0

0

0

0

0

0

0

0

0

0

0

0

1.02

0

0

0

0

0

0

0

0

0.002

0

0.003

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.012

Feb.

0

0

0

0

0

0

0

0

0

0

0

0.004

0

0

0

0

0

0

0

11.4

0

0.002

0

0

0

0

0

0

0

0

0

0

0

March

0

0.023

0

0

9.26

2.58

0.125

0

0.020

0

24.3

0.940

0

0

7.22

0

0

0

0

4.82

4.58

2.84

8.45

15.1

6.86

5.68

0

0

0.098

0.116

77.5

4.47

8.36

April

6.91

0.003

9.51

26.4

1.01

14.6

0.060

88.4

29.1

57.5

13.2

0.032

117.0

71.1

54.6

0.031

25.1

92.0

6.25

0.291

18.4

30.7

4.64

1.28

6.10

23.6

0.324

4.00

1.00

0.180

11.7

6.95

4.50

May

0.323

0

0.597

16.9

1.80

2.83

0.025

1.51

27.7

1.91

1.31

0.076

43.9

9.15

0.815

0

0.429

15.8

0.024

2.19

5.32

2.91

6.44

0.053

2.47

0.087

0.004

0.064

0.058

0.242

0.939

0.423

0.374

June

0.083

0.457

0.433

2.78

0.026

0.008

0.006

0.037

0.265

3.70

0.810

8.17

5.95

0.653

0.003

0

0.008

0.661

0

1.89

0.250

0.173

0.010

0.021

9.34

0

0

0.009

0.021

0.034

0.012

1.81

0.071

July

0

0.016

0.048

4.95

1.65

0

0

0.788

19.5

12.4

0.699

1.81

0

0.047

0

0

0

0

0

0.038

0.011

1.30

0

0.012

0.882

0

0

0

0

0.103

0

57.4

0.347
05098800 CYPRESS CREEK NEAR SARLES, ND

LOCATION.-Lat 48°56'35", long 98°57'05", in SW1 /4SE1 /4 sec.9, T.163 N., R.64 W., Cavalier County, 

Hydrologic Unit 09020313, on right bank 150 ft downstream from twin multiplate culverts on county 

highway, and 2.5 mi east of Sarles.

DRAINAGE AREA.--71 mi2 , approximately.

PERIOD OF RECORD.«May 1961 to September 1988. Prior to October 1973, published as Long River 

near Sarles.

GAGE. Water-stage recorder. Datum of gage is 1,545 ft above sea level, from topographic map.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 2,000 ft3/s, Apr. 21, 1979; maximum 

gage height, 10.35 ft, Apr. 21, 1979, backwater from ice and snow; no flow for several months each 

year.

Annual mean discharge

18

16

12

LLI

C5 fi tr 6 

o

CO 4 

Q

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

1 1 1 1

GO GO GO GO

1 1 1 1 1 1 1 1 1 1 1

omoin

317
05098800 CYPRESS CREEK NEAR SARLES, ND-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence; ng, statistic not given]

Month

Maximum Minimum

Discharge »**/"' Discharge **«*<»' Di8Charge 

I"3'" occurrence ^ occurrence <"*>

October 2.25 1983 0 m 0.110

November 0.162 1983 0 m 0.010

December 0.337 1983 0 m 0.010

January 0 m 0 m 0

February 4.71 1981 0 m 0.170

March 49.2 1985 0 m 7.28

April 171 1974 0.037 1973 42.2

May 42.6 1974 0 m 4.10

June 122 1970 0 m 9.79

July 30.4 1965 0 m 3.04

August 16.5 1963 0 m 1.04

September 11.9 1968 0 m 0.450

Annual 18.0 1970 0.219 1973 5.69

100 

70

50 

40 

30

Z 20

§ 10 

W 7

UJ 5 

Q. 4

& m I2

UL

§0.7 

O 05v.O

Z 0.4 5 °-3

O 0.2 

CC

31 0.1

CO 0.07

Q 0.05 

0.04 

0.03

0.02 

n rn

Annual flow duration

Mean

Standard Coeffldeviation cient of 

(ft3/s) variation

0.43 4.06

0.03 4.20

0.06 5.29

0 ng

0.91 5.20

13.6 1.87

48.8 1.16

8.56 2.09

25.9 2.64

7.74 2.55

3.44 3.30

2.25 4.97

4.76 0.84

Percentage 

of annual 

discharge

0.15

0.01

0.02

0

0.26

10.7

61.9

6.02.

14.4

4.46

1.53

0.66

100

f ":

r ~.

10 20 30 40 50 60 70 80 90 

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

95 98

318
05098800 CYPRESS CREEK NEAR SARLES, ND-Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

» 65

to

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

March

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.26

1.90

4.33

16.2

45.3

April

0

0

0

0.08

0.17

0.48

0.69

0.98

2.00

3.32

4.58

7.09

12.1

19.8

29.2

44.5

63.9

103

184

May

0

0

0

0

0

0

0.04

0.08

0.15

0.27

0.36

0.49

0.66

0.89

1.60

2.20

5.47

11.6

24.5

June

0

0

0

0

0

0

0

0

0

0

0

0.03

0.08

0.16

0.32

0.89

1.80

5.40

33.1

July

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.06

0.16

0.39

0.99

2.50

Aug.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.06

0.18

1.10

Sept.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.10

0.45

Oct.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.05

0.37
05098800 CYPRESS CREEK NEAR SARLES, ND-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

Recurrence

. . ..... interval probability

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum

instantaneous 

(ft3/*)

ng

30.8

53.9

103

323

903

1,480

2,410

3,250

4,200

5,260

6,840

3-day period 7-day period

3.55

13.2

25.0

51.3

173

478

755

1,160

1,500

1,850

2,210

ng

2.99

10.4

19.1

37.7

118

300

455

672

842

1,010

1,180

ng

15-day period 30-day period

2.02 1.15

6.93 3.97

12.5 7.18

24.1 13.8

70.8 39.7

167 91.2

242 130

340 178

412 212

480 244

545 273

ng ng

Probability of occurrence of annual low discharges

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 ng

0.10 10 ng

0.20 5 ng

0.50 2 ng

3 7

ng ng

ng ng

ng ng

ng ng

14

ng

ng

ng

ng

30 60

ng ng

ng ng

ng ng

ng ng

90 120 183

ng ng 0

ng ng 0

ng ng 0

ng ng 0

320
05098800 CYPRESS CREEK NEAR SARLES, ND-Continued

Probability of occurrence of seasonal low discharges

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurrence

exceedance interval

probability (years)

14 30 14 30

0.05

0.10

0.20

0.50

0.05

0.10

0.20

0.50

20

10

5

2

20

10

5

2

ng 

ng 

ng

ng 

ng 

ng 

ng

December-January-February

ng 

ng 

ng 

ng

ng ng

ng ng

ng ng

ng ng

June-July-August

ng 

ng 

ng 

ng

ng 0

ng 0

ng 0

ng 0

March-April-May

ng 

ng 

ng

ng 

ng 

ng

ng 0

ng 0

ng 0

ng ng ng 0 

September-October-November

ng 

ng 

ng 

ng

ng 

ng 

ng 

ng

ng 

ng 

ng 

ng

ng 

ng 

ng 

ng

321
05098800 CYPRESS CREEK NEAR SARLES, ND-Continued

Annual peak discharge and corresponding gage height

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(tf/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(tf/s)

Annual peak discharge, by year, and corresponding gage height

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

JulyS

June 2

April 10

July 22

March 17

April 21

August 25

April 12

June 1 1

April 10

March 19

March 12

April 17

April 13

4.37

4.70

3.03

5.00

6.18

4.57

3.08

7.90

8.55

8.56

4.98

3.40

7.62

5.75

393

572

132

360

670

310

98.0

1,130

1,740

1,920

245

40.0

1,260

389

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

April 4

May 20

April 7

April 21

AprilS

February 24

June 5

April 2

March 28

March 13

March 17

AprilS

March 29

7.30

3.42

5.84

10.35

4.05

5.00

8.41

4.88

3.99

6.22

5.23

7.20

3.00

650

50.0

392

2,000

85.0

31.0

1,440

148

38.0

470

198

605

6.30

Annual peak discharge, from highest to lowest, and corresponding gage height

1979

1971

1970

1982

1974

1969

1966

1976

1987

1963

1985

1962

1978

1975

April 21

April 10

June 1 1

June 5

April 17

April 12

March 17

April 4

April 5

June 2

March 13

JulyS

April 7

April 13

10.35

8.56

8.55

8.41

7.62

7.90

6.18

7.30

7.20

4.70

6.22

4.37

5.84

5.75

2,000

1,920

1,740

1,440

1,260

1,130

670

650

605

572

470

393

392

389

1965

1967

1972

1986

1983

1964

1968

1980

1977

1973

1984

1981

1988

July 22

April 21

March 19

March 17

April 2

April 10

August 25

AprilS

May 20

March 12

March 28

February 24

March 29

5.00

4.57

4.98

5.23

4.88

3.03

3.08

4.05

3.42

3.40

3.99

5.00

3.00

360

310

245

198

148

132

98.0

85.0

50.0

40.0

38.0

31.0

6.30

322
05098800 CYPRESS CREEK NEAR SABLES, ND-Continued

Monthly and annual mean discharges, in cubic feet per second

[Data were not rounded in accordance with U.S. Geological Survey publication standards; --, no data]

Year

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

Oct.

0

0

0

0

0.270

0

0

0.381

0

0

0

0

0

0

0

0

0

0

0

0.018

0

2.25

0

0

0.029

0

0.010

0

Nov.

0

0

0

0

0.002

0

0

0.029

0

0

0

0

0

0

0

0

0

0

0

0.013

0

0.162

0

0

0

0

0

0

Dec.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.337

0

0

0

0

0

0

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

4.71

0

0

0

0

0

0

0

~

March

0

1.06

0

0

30.1

13.0

3.63

0

0

0

41.3

2.54

0

0

0

0

0

0

0

4.71

4.97

12.6

3.95

49.2

27.8

0

1.61

~

April

42.9

0.823

23.8

19.1

12.2

45.2

0.475

152.8

84.5

119.8

16.2

0.037

170.6

34.2

87.9

0.074

45.8

106.2

8.52

0.638

42.1

39.1

1.13

1.16

12.6

70.0

1.15

May

1.10

0.023

0.294

2.21

8.49

7.84

0

0.661

11.9

0.450

0.393

0

42.6

3.99

0.199

8.44

4.74

11.9

0.018

0.496

0.691

0.678

0.780

0.006

2.83

0.028

0.002

~

June

0

1.50

46.9

1.59

0.873

0.025

0

0

0.080

122.1

0

0.002

0

0.888

10.5

0.005

0.157

0.340

0.424

0.193

0.016

54.1

0.048

0.021

18.6

15.7

0

0

July

0

15.1

25.6

0.081

30.4

0

0

0

0.162

0.572

0.873

0

0

0.005

1.60

0

0

0.346

0.002

0.127

0

0.105

0.320

0

7.75

2.06

0

0

~
05099100 SNOWFLAKE CREEK NEAR SNOWFLAKE, MB

LOCATION.-Lat 49°01'17", long 98°36'13", in SWV4 sec.10, T.I., R.9 W., first meridian, Hydrologic 

Unit 09020313, at traffic bridge, 2.5 mi east, and 1.5 mi south of Snowflake, Manitoba.

DRAINAGE AREA.--348 mi2 .

PERIOD OF RECORD.-March 1961 to current year.

GAGE. Water-stage recorder since March 1968 and nonrecording gage prior thereto. Datum of gage is 

Geodetic Survey of Canada Datum of 1929. Prior to Jan. 1, 1987, recording gage at same site at datum 

of 1,221.66 ft above Geodetic Survey of Canada Datum of 1929. Prior to Apr. 2, 1964, nonrecording 

gage at present site and datum. Apr. 2, 1964, to May 10, 1965, nonrecording gage at site 0.5 mi 

downstream at present datum.

EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 1,130 ft3/s, Apr. 21, 1979, gage height, 

1,229.94 ft; no flow at times.

Annual mean discharge

1UU

Q

O 80 

O 

UL1 W

CT 

UL1

a.

fc 60

ULl 

UO

CO

o

Z 40

UU 

O

cr

w 20

Q

ft

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

-

-

.

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 I..I

1

1

1

,1

1 1

-

1, .III

-

.

1

(t) O

CO CD

CO CO

in o in O i- rO) O) O)

in o in o in o in 

o> o> o> o> o> o> o> O) O) O)

324
DISCHARGE, IN CUBIC FEET PER SECOND

~o 

m

3

o

m 10 z o

m-n

i~ *. 

go

IsU)

m

I"

p o op p

b b bb b P ro w -(^01 ^i -L

o pop p

K> w AW >!-« ro

> co > Jr ±r <f >

3 <S c S. g £ -a 

3 1> 09 v: g ^ 3 .

c n c 03 3 £ " r

 OJ OJ

ON so ^-J *-*-* N} so t-/* 

t/> so O <-/< OJ O <-»J

'N- ^J 4* ^

SO so so so so so so 

^-J so so so ^-J *-J so 

4^ OJ OJ UJ 4^ so N>

O O O O O O O

L> O k>

^-J ON NJ

oo ~ ly<

^O 3 3 3 3 so so 

oo 3 3 3 3 oo ~~j

oo oo OJ

 (y» oo

^-j k) o bo k) ^-j ^J

SO OO OJ

 K> so O

~-J -J NJ so ~-J 4^ <-»J

ON ^ k) so i*> ^ 

O

 U> K) > > 

> so so 4^ C» -J NJ 

to so oo iy< so K) *

S

hJ 4^ 

NJ |sj OJ so so ON

LK> k) ~-j 4^ bo ~-j

4^ K> K> O

2 ^ ^ a z 

B a- 1 8 2 

1 g 1 § i 

«5 S* sT 

p Q

4i. K) 

|sj 4i. o ' <-/> 

C/i so O *-/^ ^*J 

O -J 

oo

so so so so so 

so OO so so so 

o o to o o 

333333

ON O O O 

0 ~ 0 k) 

 ty» so oo 

0 0

SO O O p <-/< 

4^ bo O i*> <-/> 

OJ (_yi (xj O 4^

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C/» ON so ' * C/» 

OJ 0 0 0 0 

k) O O ^ 

~~J OO ly< O 
05099100 SNOWFLAKE CREEK NEAR SNOWFLAKE, MB-Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

March

0

0

0

0

0

0

0

0

0

0

0

0.07

0.35

1.00

1.80

4.61

7.45

12.4

33.0

April

0

0.40

0.57

1.10

2.20

4.49

7.00

10.7

15.8

20.6

26.4

34.3

48.2

66.9

91.6

161

225

302

421

May

0

0.10

0.18

0.47

0.65

1.20

1.70

3.66

7.01

15.0

21.4

29.1

38.8

48.8

62.1

80.6

105

149

270

June

0

0

0

0

0.05

0.32

1.10

1.60

3.35

4.80

8.52

11.7

14.5

16.6

18.7

21.9

26.7

38.3

73.1

July

0

0

0

0

0

0

0.03

0.10

0.31

0.73

1.70

3.70

5.53

7.36

8.63

10.9

14.4

19.1

29.2

Aug.

0

0

0

0

0

0

0

0

0

0.02

0.13

0.39

0.89

1.60

2.70

4.57

5.64

8.68

13.4

Sept.

0

0

0

0

0

0

0

0

0

0

0

0.05

0.17

0.40

0.92

1.60

3.87

6.78

10.4

Oct.

0

0

0

0

0

0

0

0

0

0

0.03

0.05

0.09

0.26

0.45

1.30

2.30

4.14

7.64
05099100 SNOWFLAKE CREEK NEAR SNOWFLAKE, MB-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Recurrence

. ..... interval probability , . K ' (years)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum

instantaneous

4.40

14.1

25.1

48.8

156

432

698

1,120

1,490

1,910

2,360

3,010

Maximum mean discharge 

(ft3/s)

3-day period 7-day period 15-day period

3.15 2.18 1.51

9.57 6.81 4.83

16.8 12.2 8.80

32.5 24.2 17.9

106 83.5 65.6

314 265 224

533 467 415

911 836 784

1,270 1,200 1,170

1,690 1,650 1,660

2,180 2,190 2,280

ng ng ng

30-day period

0.962

3.20

5.97

12.5

48.5

176

338

662

1,010

1,470

2,060

ng

Probability of occurrence of annual low discharges

[ng, statistic not given]

Minimum mean discharge (fta/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 ng

0.10 10 ng

0.20 5 ng

0.50 2 ng

3 7

ng ng

ng ng

ng ng

ng ng

14 30 60 90

ng ng ng 0

ng ng ng 0

ng ng ng 0

ng ng ng 0

120 183

0 0

0 0

0 0

0 0.024

327
05099100 SNOWFLAKE CREEK NEAR SNOWFLAKE, MB-Continued

Probability of occurrence of seasonal low discharges

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

ng ng

ng ng

ng ng

ng ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

June-July-August

0.05

0.10

0.20

0.50

20

10

5

2

0 0

0 0

0 0

0 0

0

0

0

0

0

0

0

0.116

0

0

0

0

7 14 30

March-April-May

0

0

0

0

0

0

0

0

0

0

0

0.643

September-October-November

0

0

0

0

0

0

0

0

0

0

0

0

328
05099100 SNOWFLAKE CREEK NEAR SNOWFLAKE, MB--Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

years

Date

Gage 

height 

(feet)

Peak 

discharge 

(ftVs)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

March 27

April 18

March 2 1

April 9

April 1 1

April 14

April 20

August 25

April 11

April 25

April 12

April 16

March 18

May 21

April 28

Aprils

May 19

1,224.21

1,226.41

,226.39

,224.18

,225.12

,226.36

,226.54

,224.01

,227.39

,226.27

--

-

--

1,227.64

1,224.64

--

1,225.43

13.6

101

9.90

21.7

44.0

227

310

79.4

653

279

658

402

21.2

823

158

344

29.0

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

April 27

April 21

April 5

May 22

June 6

April 6

March 26

AprilS

June 3

April 5

April 3

April 14

April 3

July 12

AprilS

July 28

April 15

1,226.31

1,229.94

1,225.71

1,225.67

1,228.38

1,225.87

1,224.75

1,226.68

1,228.07

1,228.77

1,225.34

1,226.64

1,226.57

1,226.63

1,228.86

1,226.69

1,227.84

247

1,130

67.0

82.0

505

56.0

14.9

190

427

438

29.0

185

155

188

600

155

378

Annual peak discharge, from highest to lowest, and corresponding gage height

1979

1974

1971

1969

1992

1982

1987

1986

1972

1994

1976

1967

1970

1978

1966

1985

1991

April 21

May 21

April 12

April 1 1

AprilS

June 6

April5

June 3

April 16

April 15

AprilS

April 20

April 25

April 27

April 14

AprilS

July 12

1,229.94

1,227.64

--

1,227.39

1,228.86

1,228.38

1,228.77

1,228.07

--

1,227.84

--

,226.54

,226.27

,226.31

,226.36

,226.68

,226.63

1,130

823

658

653

600

505

438

427

402

378

344

310

279

247

227

190

188

1989

1975

1990

1993

1962

1981

1968

1980

1983

1965

1977

1988

1964

1973

1984

1961

1963

April 14

April 28

April 3

July 28

April 18

May 22

August 25

AprilS

April 6

April 1 1

May 19

April 3

April 9

March 18

March 26

March 27

March 2 1

,226.64

,224.64

,226.57

,226.69

,226.41

,225.67

,224.01

,225.71

,225.87

,225.12

,225.43

1,225.34

1,224.18

-

1,224.75

1,224.21

1,226.39

185

158

155

155

101

82.0

79.4

67.0

56.0

44.0

29.0

29.0

21.7

21.2

14.9

13.6

9.90

329
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'd' O <N OO 

rs vi S

ON O O O O O vi cs

 O 0 <N 0

CO ON V) O

NO CO fO

NO O O O

 oo §00 NO OO

O O O OO O

co 

r-- vi vi

oo O <N ON O

 V)

vi co

NO NO V) V> O

 CO O fS 

NO Tt ON 

CO

V) NO OO OO

O fS ON fS <N 

O ON fS 

<N fS

ON OO t~~ NO 

V) fS * 

o o o o o

o o o o o

o o o o op

00000

r- co 3- oo 

p p

00000

ON ON OO r~-

C-) CO O NO

fS O O O

o o o o o

NO f- OO ON O r~ r~- r~- r~- oo

ON ON ON ON ON

ON 

ON * V) O

vi vi ON r^ *^

 * co cootco 

fS 

p p

<N O fS

 oo rs 

 fS fS 

O O <N O O

CO

r~ vi NO rs 

v; co c-)

O Tt vi o fS

 ON

r-- Tt v> co O NO co O rs

NO "*

 OTt

o co r-- <N co

 ON NO ON V)

 ro fN NO 

<N NO C-l V)

fN CO NO OO

ON ON CO OO 

vi vi r~- co <N

<N

V) 

O O fN

ON O O

O O O O O

OO NO fN

CO fO

00000

r>- cs oo * co vi vi fN O O

vi O O O O

 ^ V) VI

 r>- O vi 

NO O <N O

<N O O O O

 rs ro TJ- vi

oo oo oo oo oo

ON ON ON ON ON

OO 

f- ON O 

f"^ sO CO ^*> ^^

CO V) O fN <N 

 fS

r- o 

p p

oo rs

fN CO CO 

fN NO O

O O O O

fV) r- vi vi O 

NO O O O <N 0

ON 

OO ON O ON

 f- O O NO

 O

NO CO NO

 q- ON O O CO

o oo o o

V) 

fN NO ON TJ- fS

 * <N Tf Tt 

V) V) <N 

NO

 vi O 

Tf O * vi

O O O 

fS O

oo 

o o 

o o o o o

o o o o o

00000

so rOO O

o o

o o o o o

ON O 

OO <M 

CO O

o o o o o

NO f- OO ON O 

OO OO OO OO ON 

ON ON ON ON ON

O

<N -3- OO 

Tt fS ro

ON

p r^ oo

O O ON <N ON 

oo co

fN fS ON

V) OO Tt t--

O O O vi

fS OO 

p ON r-; fN

Tt ^ vi \O 

 CO

V)

oo r~ o ON

vi ro vi r--

o 

co ro ON r--

 r- ON ON 

r>- ON t-~

V) CO fN ON

TT CO ON 

V) * 

CO fN

ON 

NO O 

OO V) CO V)

V) fN O ON

O O O O

 oo

o o

o o o o

V)

o o o 

fN V)

O fN fO O vi

oo

O sO

O fN O OO

NO

 fN CO *

ON ON ON ON 

ON ON ON ON

330
05099150 MOWBRAY CREEK NEAR MOWBRAY, MB

LOCATION.-Lat 49°00'00", long 98°27' 15", in SEV4 sec.3, T. 1, R.8 W., first meridian, Hydrologic Unit 

09020313, on downstream side of bridge on Municipal Road on international boundary, and 1.5 mi 

east of Mowbray, Manitoba.

DRAINAGE AREA.--93.9 mi2 .

PERIOD OF RECORD.--March 1962 to current year. Seasonal records only most years.

GAGE.-Water-stage recorder. Datum of gage is Geodetic Survey of Canada Datum of 1929. 

Nonrecording gage prior to 1971.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 943 ft3/s, Apr. 6, 1987, gage height, 

1,534.57 ft; no flow at times.

50

O 

§40

O 

LLJ 

CO

cc

LLJ 

Q.

LLJ 

LL

O

CD

O

Z 20

UJ 

CD 

OC

co 10 

o

Annual mean discharge

1 1 1 1

o m O) O5

O> O3

331
05099150 MOWBRAY CREEK NEAR MOWBRAY, MB-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence; ng, statistic not given]

Month

Maximum Minimum Mean

_. . Water year _. . Water year _. . Standard Coeffi- D,scharge J D.scharge J Discharge deviation ^^

(n/S) occurrence (n IS) occurrence (n /S) (ft3/s) variation

October 5.15 1981 0 m 0.600 1.36 2.27

November 0.634 1988 0 m 0.090 0.21 2.37

December 0.036 1988 0 m 0.010 0.01 2.44

January 0 m 0 m 0 0 ng

February 5.68 1981 0 m 0.390 1.46 3.80

March 62.0 1985 0 m 9.91 17.3 1.75

April 208 1974 1.05 1973 64.4 63.4 0.98

May 159 1974 0.009 1973 15.0 31.7 2.12

June 32.0 1986 0 m 5.45 7.86 1.44

July 55.6 1993 0 m 4.02 10.4 2.58

August 140 1993 0 m 5.09 24.4 4.79

September 16.9 1994 0 m 1.29 3.43 2.67

Annual 22.2 1993 0.589 1963 8.60 7.27 0.85

100 

70

50 

40

Z 30

O 20 ill CO

m 10 0. 

1- 7 

LU ill 5

o 4

m 3

O 2

Z

in" , 

CD 1

0 0.5 

CO 0.4 

0 0.3

0.2

0.1 ',

Annual flow duration

i i i , i | . i . , , i , , , | , i , , | i i , . 1 1 1 , , 1 1 1 , 1 1 . i , , | , i i , | i , i , | , , i | ,

-

-

r 

r 

: 

'_ 

: 

1 , , , , 1 , 1 , , , , , , , 1 , , , , 1 , ,», I 1 , , , , 1 , , , , 1 I , , , 1 , , , , 1 , , , , 1 . I , 1 > 5 10 20 30 40 50 60 70 80 90 95

Percentage 

of annual 

discharge

0.56

0.08

0.01

0

0.36

9.33

60.6

14.1

5.13

3.79

4.80

1.21

100

-I

-

-

-

-j

-

-.

:

98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

332
05099150 MOWBRAY CREEK NEAR MOWBRAY, MB-Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

March

0

0

0

0

0

0

0

0

0

0

0

0

0

0.12

0.65

2.00

5.45

16.9

40.9

April

0

0

0.37

1.10

1.50

2.70

4.46

6.16

9.44

14.6

19.8

25.6

33.1

45.3

61.9

88.6

130

199

343

May

0

0

0

0

0.19

0.37

0.71

0.99

1.40

1.90

1.90

3.40

4.29

6.05

8.04

12.6

20.9

37.4

72.6

June

0

0

0

0

0

0.08

0.37

0.50

0.92

1.30

1.70

1.70

2.30

3.14

3.84

4.92

7.63

12.2

28.2

July

0

0

0

0

0

0

0

0

0.04

0.20

0.26

0.48

0.87

1.60

2.10

3.39

4.56

8.03

20.3

Aug.

0

0

0

0

0

0

0

0

0

0

0

0

0

0.31

0.80

1.10

1.50

2.10

8.57

Sept.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.37

0.90

2.20

8.74

Oct.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.28

0.96

1.80

4.10
05099150 MOWBRAY CREEK NEAR MOWBRAY, MB-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Exceedance Recu"c"cc

probability 'nterva 

' (years)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 

(ft3/*)

6.70

22.5

40.3

77.4

230

564

837

1,210

1,500

1,790

2,070

2,430

Maximum mean discharge 

(ft3/s)

3-day period 7-day period 15-day period

2.86 2.67 1.94

11.7 9.88 6.77

23.0 18.6 12.5

48.4 38.1 25.1

163 126 82.3

428 340 227

645 528 360

936 800 563

1,150 1,020 732

1,360 1,240 912

1,560 1,470 1,100

ng ng ng

30-day period

1.37

4.60

8.36

16.5

52.5

141

222

343

444

551

662

ng

Probability of occurrence of annual low discharges

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val

ability (years)

0.05 20 ng

0.10 10 ng

0.20 5 ng

0.50 2 ng

3 7

ng ng

ng ng

ng ng

ng ng

14 30 60 90

ng ng ng ng

ng ng ng ng

ng ng ng ng

ng ng ng ng

120 183

ng ng

ng ng

ng ng

ng ng

334
05099150 MOWBRAY CREEK NEAR MOWBRAY, MB-Continued

Probability of occurrence of seasonal low discharges

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

ng

ng

ng

ng

7 14 30

March-April-May

ng

ng

ng

ng

0

0

0

0

0

0

0

0.096

September-October-November

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

ng

335
05099150 MOWBRAY CREEK NEAR MOWBRAY, MB-Continued

Annual peak discharge and corresponding gage height

[ , no data]

Water 

year

Date

Gage

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Gage 

Date height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

April 20

June 25

April 16

April 13

March 29

April 24

April 9

April 15

April 27

April 12

March 21

March 1 8

April 21

April 15

April 7

September 8

April 1 1

1,531.73

1,528.95

1,529.57

1,531.36

1,533.86

1,532.42

1,529.33

1,532.23

1,532.23

1,532.93

1,531.35

-

1,533.00

1,530.47

1,532.47

1,529.91

1,532.44

305

9.20

22.8

202

305

392

17.6

377

372

630

138

67.0

670

59.0

455

29.0

378

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

April 24

May 29

May 22

April 14

April 7

June 10

March 22

March 28

April 6

April 3

April 19

April 7

May 31

April 1

,533.00

,532.27

,530.96

,532.80

,531.49

,530.45

,532.92

,533.79

,534.57

,530.80

,532.59

,531.64

,531.75

,534.10

August3 1,533.25

April 2 1,533.99

111

310

126

350

155

68.0

484

643

943

55.0

392

137

133

685

317

784

Annual peak discharge, from highest to lowest, and corresponding gage height

1987

1994

1979

1992

1974

1986

1971

1985

1976

1967

1989

1978

1969

1970

1982

1993

1980

April 6

April 2

April 24

April 1

April 21

March 28

April 12

March 22

April 7

April 24

April 19

April 1 1

April 15

April 27

April 14

August 3

May 29

,534.57

,533.99

,533.00

,534.10

,533.00

,533.79

,532.93

,532.92

1,532.47

1,532.42

1,532.59

1,532.44

1,532.23

1,532.23

1,532.80

1,533.25

1,532.27

943

784

777

685

670

643

630

484

455

392

392

378

377

372

350

317

310

1962

1966

1965

1983

1972

1990

1991

1981

1984

1973

1975

1988

1977

1964

1968

1963

April 20 ,531.73

March 29 ,533.86

April 13 ,531.36

April 7 ,531.49

March 21 ,531.35

April 7 ,531.64

May 31 1,531.75

May 22 1,530.96

June 10 1,530.45

March 18

April 15 1,530.47

April 3 1,530.80

Septembers 1,529.91

April 16 1,529.57

April 9 1,529.33

June 25 1,528.95

305

305

202

155

138

137

133

126

68.0

67.0

59.0

55.0

29.0

22.8

17.6

9.20

336
05099150 MOWBRAY CREEK NEAR MOWBRAY, MB-Continued

Monthly and annual mean discharges, in cubic feet per second

[Data were not rounded in accordance with U.S. Geological Survey publication standards; --, no data]

Year

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

Oct.

0

0

0

0

0

0

0

0

-

0

0

0

0

0

0

0.015

0

4.57

5.15

0.316

2.55

0

0

2.79

0.037

1.87

0

0

0

0.013

0

1.27

Nov.

0

0

0

0

0

-

..

_.

--

_

~

--

..

_-

-

0

0.634

0

0

0

0.046

0

0.457

Dec.

0

0

0

0

0

--

_

-

_

_

--

_

-

0

0.036

0

0

0

0

0

0.035

Jan.

0

0

0

0

0

__

__

-

..

--

_

~

-

__

__

-.

__

0

0

0

0

0

0

0

0

0

Feb.

0

0

0

0

0

--

_

--

_

_

5.68

_

0

0

0.100

0

0

0

0

0

0

March

0

0.361

0

0

49.9

1.84

2.53

__

0

0

28.9

10.6

0

0

0

0.018

0.161

0

0.155

12.9

1.13

17.7

4.73

62.0

50.4

0

1.73

0

2.33

6.89

39.5

0.789

22.4

April

62.2

1.06

9.45

49.7

89.9

103.6

6.23

129.3

114.7

206.2

40.2

1.05

207.7

18.6

120.7

2.79

107.0

177.9

14.8

4.17

33.4

35.9

3.80

18.4

38.6

155.2

8.06

33.9

31.2

2.38

142.6

46.0

107.5

May

2.38

0.084

0.887

11.7

46.8

60.1

0.034

6.37

31.9

12.8

4.94

0.009

159.1

10.3

2.15

0.061

7.18

80.5

7.89

2.08

5.87

2.94

1.65

0.827

11.8

0.384

0.050

2.04

1.30

4.76

5.32

6.49

3.47

June

2.93

3.82

0.510

1.89

5.23

2.38

0

13.0

27.6

3.23

0.584

0

16.0

0.170

0.843

0

1.10

0.844

3.49

1.11

5.00

0.971

8.96

7.50

32.0

1.01

0

0.056

15.3

14.0

0.868

8.08

1.36

July

0.106

1.43

0.223

0.032

2.03

0.068

0

5.29

21.3

1.17

0

0

0.864

0.079

0.305

0

1.00

8.83

1.14

0.419

3.92

0.391

0.031

15.0

5.00

0.015

0

0

0.225

6.99

0.972

55.6

0.355
05099300 PEMBINA RIVER NEAR WINDYGATES, MB

LOCATION.«Lat 49°01'53", long 98°16'40", in SEV4 sec. 13, T.I, R.7 W, first meridian, Hydrologic 

Unit 09020313, on left bank 0.2 mi downstream from bridge, and 3 mi northeast of Windygates, 

Manitoba.

DRAINAGE AREA.-3,020 mi2 .

PERIOD OF RECORD.-April 1962 to current year.

GAGE.-Water-stage recorder. Datum of gage is Geodetic Survey of Canada Datum of 1929. Prior to 

Jan. 1, 1985, datum of gage at 1,102.02 ft above Geodetic Survey of Canada Datum of 1929.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 11,500 ft3/s, Apr. 26, 1974, gage 

height, 1,121.52 ft; no flow at times.

Annual mean discharge

l.UUU

Q

O 800

O 

HI

GC 

HI 

0.

fc 60° 

HI 

LL

O

CO

O

Z 400

Hi" 

O 

CC

W 200

Q

o

<

I I I I I I I I I I I I I I I I

-

-

_

I I I I I I I I I I I I I I I I II

g

coo>o>oo-'--i-CMCMcocO"*"*mincoci 

OOOOOOC>O)O>O)O)O)O)O)O)O)O)O)O)C

1

1

1 h

1

i5 £

I I I I

~

-

-

_

II 1 nil I

00 00 C} O) <

CT> CT> CT> CT> C

338
05099300 PEMBINA RIVER NEAR WINDYGATES, MB-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence]

Maximum

Month

October

November

December

January

February

March

April

May

June

July

August

September

Annual

Discharge 

<ft3/s)

343

170

56.9

27.0

44.5

320

3,110

3,620

1,510

633

719

544

736

Water year 

of 

occurrence

1969

1969

1994

1994

1976

1985

1969

1974

1974

1970

1993

1993

1974

Minimum

Discharge 

(ft3/s)

0

0

0

0

0

0

21.3

27.0

4.03

0.070

0

0

9.61

Water year 

of 

occurrence

m

m

m

m

m

m

1977

1988

1988

1988

1988

m

1977

Discharge 

(ft3/s)

45.1

24.5

10.6

5.30

4.86

70.5

821

669

274

124

86.1

66.8

186

Mean

Standard 

deviation 

(ft3/s)

71.9

36.0

14.2

6.90

8.81

107

890

830

322

135

134

107

174

Coefficient of 

variation

1.59

1.47

1.34

1.30

1.81

1.51

1.08

1.24

1.18

1.09

1.55

1.60

0.940

Percentage 

of annual 

discharge

2.05

1.11

0.480

0.240

0.220

3.20

37.3

30.4

12.5

5.62

3.91

3.03

100

Annual flow duration

Q

Z

O

0 

LU

05

CC 

LU 

Q_

1-

LU 

LU

LL

O

CO

3

z

LU

O

cr

JE

0 

05

Q

l.UUU

700

188

300

200

100

70

50 

40

30

20

10

7 

5

4

3

2

1

0.7

0.5 

0.4

0.3

0.2

n i

i i ^ i . i i | i i i i

j-

: 

-

r

:

r'

'-

-

-

-

;

r

[

:~ 

'-

r

">-

r

r , . i , i i i i 1 1 1 1

I , 1 1 1 1 1 1 , 1 1 1 , , , 1 1 I 1 . 1 , I I , 1 , . , 1 1 1 1 1 I 1 1 , 1 1 1 .11 1 , I .

-:

J

9

-

'.

 .;

 ":

 ~

 1

;

* -I

 2

 

-

 :

-

-.

-

 -

-

, , , , , i , , , , i , , , , i , , , , i , , , , i , , , , i , , , , i , , . i i . . , i

10 20 30 40 50 60 70 80

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

90 95 98

339
05099300 PEMBINA RIVER NEAR WINDYGATES, MB-Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0.25

0.58

1.30

1.60

3.00

3.70

4.59

5.80

8.48

10.3

13.0

17.7

21.7

Feb.

0

0

0

0

0

0

0

0

0.35

0.92

1.50

1.90

3.10

3.10

4.80

8.93

12.2

14.5

16.8

March

0

0

0

0

0.15

0.56

1.50

3.51

5.67

8.25

10.5

12.7

14.5

19.9

33.4

50.5

79.6

142

504

April

7.15

23.3

45.7

70.8

96.8

122

148

187

248

320

457

580

658

786

981

1,230

1,720

2,410

3,240

May

29.2

46.8

62.3

74.8

90.1

120

175

226

292

387

466

554

634

710

829

993

1,260

1,700

2,450

June

12.1

22.3

31.4

42.3

68.1

83.8

100

118

138

162

188

216

252

297

348

404

502

669

978

July

0.62

2.59

7.84

17.8

28.2

35.8

43.9

52.4

64.7

77.9

90.7

103

121

142

164

190

216

317

426

Aug.

0

0.32

0.91

3.20

7.46

18.6

28.8

38.3

45.3

51.3

57.3

67.2

77.7

89.0

101

113

140

192

304

Sept.

0

0.04

0.30

1.10

3.25

5.24

18.2

24.5

31.1

37.1

42.7

48.4

58.0

67.6

80.7

93.9

114

137

292

Oct.

0.05

0.05

1.70

2.40

4.73

9.10

13.0

17.3

21.8

26.1

30.4

35.1

39.8

45.2

52.0

58.7

70.0

83.4

244
05099300 PEMBINA RIVER NEAR WINDYGATES, MB-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

Recurrence

. . .,"* interval probability . . K * (years)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum

instantaneous 

(ft3/s)

74.7

174

270

454

1,190

3,020

4,830

7,880

10,700

14,100

18,100

24,300

3-day period 7-day period

52.3 43.8

122 105

191 168

330 293

937 841

2,660 2,380

4,600 4,080

8,240 7,200

12,000 10,400

16,800 14,400

23,000 19,400

ng ng

15-day period

32.5

84.0

137

247

728

2,050

3,460

5,950

8,400

11,400

15,000

ng

30-day period

22.2

64.1

110

206

634

1,780

2,950

4,930

6,760

8,890

11,300

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (n^/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 0

0.10 10 0

0.20 5 0

0.50 2 0.139

3 7

0 0

0 0

0 0

0.146 0.168

14 30 60

000

000

000

0.441 0.646 0.983

90

0

0

0.048

1.93

120 183

0 0

0.030 0.192

0.472 1.32

3.18 10.5

341
05099300 PEMBINA RIVER NEAR WINDYGATES, MB-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30

December-January-Febraary

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0.284

0

0

0

0.356

0

0

0

0.459

0

0

0

0.715

June- July- August

0.05

0.10

0.20

0.50

20

10

5

2

0

0.006

0.998

21.6

0

0.035

1.79

23.1

0

0.076

2.48

25.9

0

0.755

4.35

33.2

1 7 14 30

March-April-May

0 0

0 0

0 0

1.35 2.15

0

0

0

2.82

0

0.246

2.37

15.2

September-October-November

0 0

0 0

0.298 0.576

5.33 6.70

0

0

0.913

7.78

0

0.012

0.968

11.5

342
05099300 PEMBINA RIVER NEAR WINDYGATES, MB-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

April 21

June 6

May 10

April 14

April 3

April 21

March 24

April 19

April 28

April 10

April 12

August 8

April 26

May 14

April 17

May 21

April 9

1,108.51

1,105.17

1,105.62

1,109.75

1,110.94

1,111.06

1,108.51

1,119.31

1,115.01

1,115.04

-

--

1,121.52

1,109.76

1,115.13

1,105.47

1,110.88

1,610

255

323

1,460

1,700

1,890

744

8,170

3,800

5,910

1,620

145

11,500

1,510

4,210

153

1,090

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

May 2

April 6

May 22

June 6

AprilS

June 16

April5

March 28

AprilS

April 4

April 16

April 3

July 12

April 8

July 28

April 13

1,116.63

--

1,107.31

1,110.89

1,109.29

1,103.63

1,108.93

1,109.49

1,111.90

1,106.75

1,106.79

1,108.50

1,107.33

1,113.73

1,109.73

1,109.94

5,440

327

526

1,920

1,160

491

1,220

1,230

2,540

178

441

794

487

3,080

1,140

1,380

Annual peak discharge, from highest to lowest, and corresponding gage height

1974

1969

1971

1979

1976

1970

1992

1987

1982

1967

1966

1972

1962

1975

1965

1994

1986

April 26

April 19

April 10

May 2

April 17

April 28

AprilS

AprilS

June 6

April 21

April 3

April 12

April 21

May 14

April 14

April 13

March 28

1,121.52

1,119.31

1,115.04

1,116.63

1,115.13

1,115.01

1,113.73

1,111.90

1,110.89

1,111.06

1,110.94

--

1,108.51

1,109.76

1,109.75

1,109.94

1,109.49

11,500

8,170

5,910

5,440

4,210

3,800

3,080

2,540

1,920

1,890

1,700

1,620

1,610

1,510

1,460

1,380

1,230

1985

1983

1993

1978

1990

1968

1981

1984

1991

1989

1980

1964

1963

1988

1977

1973

April5

AprilS

July 28

April 9

April 3

March 24

May 22

June 16

July 12

April 16

April 6

May 10

June 6

April 4

May 21

August 8

1,108.93

1,109.29

1,109.73

1,110.88

1,108.50

1,108.51

1,107.31

1,103.63

1,107.33

1,106.79

--

1,105.62

1,105.17

1,106.75

1,105.47

--

1,220

1,160

1,140

1,090

794

744

526

491

487

441

327

323

255

178

153

145

343
05099300 PEMBINA RIVER NEAR WINDYGATES, MB-Continued

Monthly and annual mean discharges, in cubic feet per second 

[Data were not rounded in accordance with U.S. Geological Survey publication standards; , no data]

Year

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

Oct.

..

38.5

27.3

23.1

63.0

10.7

17.2

343.0

60.3

76.0

81.3

72.3

50.7

44.1

29.7

19.4

8.55

12.1

39.2

1.84

2.62

42.0

10.1

0.712

30.2

24.6

49.7

0

0

0

5.86

3.27

257.0

Nov.

..

16.9

11.5

8.05

40.2

6.41

9.26

170.5

42.3

42.8

57.4

28.5

32.7

33.3

21.0

8.78

2.36

5.32

28.7

4.65

3.09

19.2

5.86

0.769

15.7

9.73

24.1

0

0

0

6.29

3.32

124.3

Dec.

23.4

3.35

1.13

29.4

2.69

2.94

45.3

22.3

14.4

37.3

5.05

14.7

13.2

8.98

0.223

0.798

2.68

9.40

2.56

0.816

7.05

1.75

0.187

5.27

4.83

15.3

0

0

0

5.28

1.76

56.9

Jan.

..

9.85

0.816

0

12.3

4.71

0.444

19.1

15.0

9.42

18.7

2.86

8.74

6.51

11.5

0

0.242

0.953

1.87

0

0

3.58

0.019

0

6.21

4.16

0.247

0

0

0

3.64

1.87

27.0

Feb.

..

0

0

0

2.26

3.46

0

14.1

12.4

9.60

13.9

3.01

11.2

3.72

44.5

0

0

0.235

0.660

6.04

0

0.933

0.189

0

3.03

2.95

0.166

0

0

0.084

4.67

1.17

17.4

March

..

40.9

0

0

143.4

31.0

264.1

15.6

12.0

11.4

270.6

56.3

11.8

6.87

41.2

2.90

2.42

1.06

1.35

51.8

11.9

45.0

7.34

320.2

280.0

5.22

17.6

0

16.3

14.4

279.7

18.6

275.4

April

421.2

135.0

231.6

460.4

1,032

596.7

129.2

3,112

1,095

2,026

1,205

74.4

3,003

256.9

2,630

21.3

616.1

1,352

149.2

189.9

426.5

686.7

69.2

666.7

654.7

1,552

65.9

119.4

230.3

49.0

2,391

393.9

1,043

May

204.9

166.3

282.8

646.1

696.9

654.7

69.8

1,538

1,868

1,299

774.7

49.4

3,616

1,175

1,303

34.7

368.2

2,934

76.8

98.4

589.5

427.5

78.0

198.5

611.5

685.3

27.0

72.7

86.3

29.9

731.7

196.8

482.2

June

155.8

182.4

120.4

382.4

283.5

214.2

30.6

476.4

1,075

465.6

314.2

33.0

1,512

547.4

378.4

18.9

112.7

743.7

22.7

26.9

454.6

175.2

97.2

94.7

303.6

175.2

4.03

25.7

88.0

108.1

155.3

94.7

176.0

July

54.9

96.3

35.5

125.1

132.5

63.5

18.5

289.5

633.2

343.7

197.5

45.8

368.1

190.5

114.5

4.96

48.3

194.5

1.54

10.8

187.4

61.6

13.7

49.0

116.3

51.1

0.070

1.25

29.4

196.9

49.1

233.1

122.1
05099400 LITTLE SOUTH PEMBINA RIVER NEAR WALHALLA, ND

LOCATION.--Lat 48°51'55", long 98°00'20", in SWV4 sec.10, T.162 N., R.57 W, Cavalier County, 

Hydrologic Unit 09020313, on right bank 25 ft upstream from county bridge, 3.5 mi above mouth, and 

6 mi southwest of Walhalla.

DRAINAGE AREA.--182 mi2 , of which 10 mi2 is noncontributing.

PERIOD OF RECORD.-April 1956 to September 1982. Prior to October 1973, published as Little 

Pembina River near Walhalla.

GAGE.-Water-stage recorder. Datum of gage is 1,099.48 ft above sea level. Prior to Sept. 10, 1956, 

nonrecording gage at bridge 25 ft downstream at same datum.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 6,600 ft3/s, Apr. 25, 1970, gage height, 

13.95 ft; maximum gage height, 14.38 ft, Apr. 17, 1962, backwater from ice; no flow at times in some 

years.

Annual mean discharge

1UU

O

O 80 

O 

HI 

CO

CC 

HI 

Q.

t 60 

LU 

LL.

O

CO

O

Z 40

Hi" 

O 

cc

I 

o

CO 20

Q

n

1 1 1 1 1 1 I 1 1 1 1 1 1 1 1

-

I I I I I 1 I 1 I I I I I I I

1 1 1 1

1 II 1

-

1

-

.

II 1 1 1

O IO O IO 

00 00 O> O>

OlftO i-i-CVI CO CO Iso> o> o>

345
05099400 LITTLE SOUTH PEMBINA RIVER NEAR WALHALLA, ND-Continued

Pre-regulation period, 1956-70 

Statistics of monthly and annual mean discharges, pre-regulation period

[m, more than 1 year of occurrence]

Maximum

_. . Water year 

Month Dl^;s;9e of

* occurrence

October 3.26 1969

November 2.86 1957

December 1.05 1966

January 0.834 1967

February 0.946 1969

March 139 1966

April 461 1970

May 150 1967

June 102 1970

July 62.6 1970

August 21.6 1957

September 17.0 1970

Annual 61.8 1970

100 : i i | i i i i | i i 1 1 1 1 1

70 r 

50 -

40 -

Q orv 2 30 -

o O 20 -

uj : 

C/D -

cc

UJ 10 -

Q. :

tu 7 f

UJ 5 -

u- 4 1

o - m 3 ~

z>

0 2 r

z :

w 1 !_

0 1 -

£ 0.7 r

0 0.5 r

C/D 0.4 -

0 0.3 ~

0.2 r

0.1 - I ^ ^-^

2 5 10

Minimum Mean

_. . Water year _. . Standard Coeffi- S/T of <$/T devlatlon clentof

* S' occurrence * ' (ft3/s) variation

0.177 1962 1.27 0.98 0.77

0.177 1962 1.04 0.75 0.73

0.229 1962 0.620 0.28 0.45

0.016 1958 0.420 0.27 0.64

0 m 0.340 0.28 0.83

0 1962 25.7 38.6 1.50

6.05 1958 172 162 0.94

2.34 1958 43.5 50.0 1.15

0.440 1958 19.6 24.8 1.27

0.181 1961 11.8 18.9 1.60

0.010 1961 4.26 5.76 1.35

0.090 1961 3.15 5.11 1.62

1.78 1958 21.6 17.3 0.80

Annual flow duration

"' ' ' "'""' ''""' ' '' ' -.- .

*

*

* *

 

* *

.

, , i , i , , i , , , , i , , , , i , , , , i , , , , i , , , , i , , , , T , , , t

20 30 40 50 60 70 80 90 95

Percentage 

of annual

discharge

0.45

0.37

0.22

0.15

0.12

9.07

60.6

15.3

6.90

4.16

1.50

1.11

100

^

-_

-

-

-

i

-

-

i~

-

~

~

'-

~.

-_

-

-

-

-

:

98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

346
05099400 LITTLE SOUTH PEMBINA RIVER NEAR WALHALLA, ND-Cont

Monthly and annual flow duration, in cubic feet per second, pre-regulation period

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0.10

0.19

0.19

0.19

0.28

0.28

0.28

0.37

0.37

0.55

0.55

0.63

0.63

0.72

0.72

0.94

Feb.

0

0

0

0

0

0.09

0.09

0.20

0.20

0.30

0.30

0.34

0.38

0.49

0.56

0.56

0.64

0.72

0.93

March

0

0

0.17

0.29

0.29

0.38

0.38

0.50

0.50

0.50

0.65

0.65

0.65

0.85

1.10

4.40

19.1

44.8

169

April

0.89

2.50

4.37

5.75

7.45

10.0

12.5

15.6

19.1

24.5

32.4

42.0

55.0

73.7

101

156

250

466

1,050

May

1.80

2.30

2.90

4.67

6.03

7.99

11.5

14.4

16.2

18.1

20.1

22.2

26.2

32.6

40.2

51.4

69.4

93.5

179

June

0.28

1.30

1.70

2.90

4.00

4.80

5.59

6.77

7.95

9.33

11.4

12.7

14.1

16.2

18.6

22.1

27.2

35.7

59.5

July

0.17

0.36

0.61

1.00

1.30

1.30

1.70

2.20

2.20

2.20

2.90

2.90

4.04

4.85

5.60

7.11

9.58

14.8

33.5

Aug.

0

0.10

0.19

0.19

0.36

0.44

0.55

0.68

0.83

1.00

1.30

1.60

1.90

2.40

2.40

3.70

7.87

13.1

17.8

Sept.

0.10

0.10

0.10

0.18

0.26

0.26

0.32

0.32

0.39

0.57

0.69

0.69

1.20

1.80

2.20

3.20

6.20

9.07

14.6

Oct.

0.20

0.29

0.29

0.37

0.37

0.42

0.47

0.67

0.76

0.96

1.20

1.20

1.40

1.50

1.70

2.20

2.50

2.80

3.20
05099400 LITTLE SOUTH PEMBINA RIVER NEAR WALHALLA, ND-Continued

Probability of occurrence of annual high discharges, pre-regulation period

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

Recurrence Maximum

xcee aru,c interval instantaneous 3-day period 

probability . . /fc3 . . J f (years) (ft /s)

0.99

0.95

0.90

0.80

0.50

0.20

0.10

0.04

0.02

0.01

0.005

0.002

1.01 ng

1.05 ng

1.11 283

1.25 514

2 1,470

5 3,720

10 5,780

25 8,940

50 11,600

100 14,600

200 17,800

500 22,300

Probability of occurrence

6.81

36.2

78.3

179

640

1,590

2,250

2,990

3,450

3,840

4,160

ng

7-day period 15-day period

5.29

26.1

54.7

120

407

965

1,340

1,760

2,020

2,230

2,400

ng

of annual low discharges, pre-regulation

5.19

20.0

37.8

75.8

230

536

758

1,030

1,210

1,380

1,520

ng

period

30-day period

3.69

13.0

23.6

45.9

136

323

468

655

790

918

1,040

ng

Minimum mean discharge (f^/s)

Number of consecutive days

Nonexceedance

probability

0.05

0.10

0.20

0.50

Recurrence

inter- 1 3

vai 

(years)

20 0 0

10 0 0

500

2 0.061 0.070

7 14

0 0

0 0

0 0

0.098 0.135

30 60

0 0

0 0

0 0.049

0.179 0.239

90

0.044

0.077

0.139

0.337

120 183

0.109 0.142

0.157 0.208

0.235 0.316

0.442 0.623

348
05099400 LITTLE SOUTH PEMBINA RIVER NEAR WALHALLA, ND-Continued

Probability of occurrence of seasonal low discharges, pre-regulation period

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0.072

0

0

0

0.119

0

0

0

0.171

0

0

0

0.227

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0

0.071

0.149

0.372

0

0.083

0.196

0.534

0

0.100

0.245

0.698

0

0.115

0.339

1.30

0

0

0

0.358

7 14 30

March-April-May

0

0

0

0.396

0

0

0

0.400

0

0.144

0.433

2.33

September-October-November

0

0.058

0.130

0.349

0

0.064

0.148

0.401

0.046

0.081

0.152

0.431

0.087

0.130

0.208

0.495

349
05099400 LITTLE SOUTH PEMBINA RIVER NEAR WALHALLA, ND-Continued

Post-regulation period, 1971-82 

Statistics of monthly and annual mean discharges, post-regulation period

[m, more than 1 year of occurrence]

Maximum

Month

October

November

December

January

February

March

April

May

June

July

August

September

Annual

 . Water year Discharge *

* s' occurrence

5.45

3.94

1.29

0.629

30.1

93.4

457

255

37.6

35.8

6.25

6.84

63.2

1981

1971

1971

1971

1981

1972

1974

1974

1974

1976

1976

1977

1974

Minimum

Discharge ~»«

/f|3/a\ Of

( ' occurrence

0.356

0.283

0.053

0

0

0.319

4.92

2.85

1.09

0.451

0.379

0.238

3.57

1976

1977

1977

1973

m

1975

1973

1973

1980

1973

1981

1972

1973

Discharge 

(tf/s)

1.99

1.42

0.550

0.260

2.73

20.2

176

41.6

10.9

6.50

1.69

1.98

22.0

Mean

Standard 

deviation 

(ft3/s)

1.68

1.12

0.400

0220

8.62

28.4

169

72.2

11.4

10.1

1.63

2.22

18.8

Coefficient of 

variation

0.850

0.790

0.730

0.840

3.16

1.41

0.960

1.74

1.05

1.55

0.960

1.12

0.860

Percentage 

of annual 

discharge

0.750

0.530

0.210

0.100

1.03

7.60

66.2

15.7

4.10

2.45

0.640

0.750

100

Annual flow duration

1UU

70

50

40

30

§ 20

§ 10

c 7

HI 5

°- n

I- 3

HI ,

HI 2

LL

 1

§ 0.7 

0 0.5

Z 0.4

~ 0.3

HI

O 0.2

DC

X 0.1

&0.07

5 8:8!

0.03

0.02

n m

1 ' * ' ' ' ' i ' ' ' ' ' ' ' ' i ' ' i ' ' ' ' I ' ' ' I ' ' ' I ' ' ' ' I ' ' ' i ' '

j-

-

-

-

1 

r 

i- 

- 

f 

r 

r 

- 

- 

- 

~-

'-

~

-

r

r . . i .... i ......... i .... i .... i .... i .... i .... i .... i ..

. . i . . . | . .

-:

-_

-

-

_

-i

-

-

~.

'-

-.

 -

-

-

-

:

 ~

~

-

-

. , i , . , i , ,

10 20 30 40 50 60 70 80

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

90 95 98

350
05099400 LITTLE SOUTH PEMBINA RIVER NEAR WALHALLA, ND-Conti

Monthly and annual flow duration, in cubic feet per second, post-regulation period

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0.08

0.08

0.10

0.11

0.11

0.19

0.22

0.25

0.25

0.29

0.33

0.33

0.43

0.50

0.57

0.74

Feb.

0

0

0

0.04

0.07

0.10

0.10

0.10

0.13

0.17

0.22

0.22

0.29

0.29

0.39

0.39

0.39

0.52

0.69

March

0.10

0.21

0.28

0.36

0.36

0.46

0.46

0.59

0.59

0.59

0.76

0.98

1.30

2.70

4.70

13.9

28.2

54.1

99.6

April

0.39

2.00

3.40

3.40

5.13

6.72

11.4

16.1

26.7

36.9

57.5

79.1

95.9

111

151

190

273

426

1,030

May

1.40

1.80

2.20

3.40

4.52

5.44

6.74

8.15

10.3

12.4

14.0

16.1

18.8

25.2

34.2

47.9

69.7

116

175

June

0.72

1.00

1.30

1.50

2.20

2.20

2.70

3.20

3.20

3.90

4.94

5.56

6.28

7.40

9.07

13.0

16.8

24.0

37.0

July

0.21

0.28

0.37

0.49

0.49

0.66

0.88

0.88

1.20

1.20

1.60

2.10

2.10

3.24

3.93

4.55

5.80

10.2

23.4

Aug.

0.08

0.09

0.12

0.22

0.28

0.35

0.35

0.43

0.53

0.53

0.66

0.82

0.82

1.00

1.00

1.30

1.90

3.00

5.15

Sept.

0.09

0.11

0.18

0.22

0.28

0.34

0.34

0.43

0.53

0.67

0.67

0.83

0.83

1.00

1.30

1.60

2.00

3.10

6.77

Oct.

0.33

0.33

0.38

0.44

0.58

0.76

0.88

1.00

1.10

1.30

1.50

1.50

1.70

1.70

2.30

2.60

3.00

3.50

6.10
05099400 LITTLE SOUTH PEMBINA RIVER NEAR WALHALLA, ND-Continued

Probability of occurrence of annual high discharges, post-regulation period

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

- . Recurrence

T^f6 interval probability (years)

0.99

0.95

0.90

0.80

0.50

0.20

0.10

0.04

0.02

0.01

0.005

0.002

1.01

1.05

1.11

1.25

2

5

10

25

50

100

200

500

Maximum 

instantaneous 

(frVs)

37.5

94.6

153

272

786

2,180

3,660

6,280

8,850

12,000

15,800

21,800

3-day period 7-day period

23.5

52.4

80.9

138

389

1,130

1,990

3,680

5,490

7,900

11,000

ng

16.9

39.0

61.0

105

298

848

1,470

2,650

3,870

5,450

7,470

ng

15-day period

ll.O

25.6

40.0

68.5

189

518

872

1,510

2,160

2,960

3,960

ng

30-day period

6.78

17.4

28.0

48.8

132

329

512

802

1,060

1,340

1,660

ng

Probability of occurrence of annual low discharges, post-regulation period

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurexceed- rence

ance interprob- val 

ability (years)

0.05 20

0.10 10

0.20 5

0.50 2

1

0

0

0.006

0.050

3 7

0 0

0 0

0.012 0.013

0.057 0.070

14

0

0

0.015

0.092

30 60

0 0

0 0

0.035 0.067

0.131 0.175

90

0.015

0.033

0.074

0.241

120 183

0.087 0.199

0.126 0.256

0.190 0.350

0.387 0.646

352
05099400 LITTLE SOUTH PEMBINA RIVER NEAR WALHALLA, ND-Continued

Probability of occurrence of seasonal low discharges, post-regulation period

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurrence

exceedance interval

probability (years)

14 30 14 30

0.05

0.10

0.20

0.50

0.05

0.10

0.20

0.50

20

10

5

2

20

10

5

2

December-January-February

0 0

0 0

0.013 0.023

0.142 0.139

0

0

0.023

0.144

June-July-August

0.021 0.044

0.035 0.066

0.065 0.108

0.190 0.267

0.063

0.099

0.163

0.385

0

0

0.044

0.155

0.172

0.224

0.312

0.610

March-April-May

0

0.089

0.137

0.258

0

0.084

0.156

0.358

0.128 0.299

0.163 0.461

0.227 0.781

0.466 2.17

September-October-November

0.028

0.044

0.075

0.196

0.038

0.062

0.107

0.272

0.130 0.218

0.161 0.265

0.213 0.342

0.377 0.597

353
05099400 LITTLE SOUTH PEMBINA RIVER NEAR WALHALLA, ND-Continued

Annual peak discharge and corresponding gage height

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(tf/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

April 21

August 1

JulyS

April 3

April 1 1

March 25

April 18

July 26

April 9

April 10

April 1

May 6

March 25

April 9

10.15

7.73

6.75

9.38

13.28

7.46

12.79

10.11

7.90

13.36

11.62

11.47

7.82

12.76

2,800

447

20.0

996

4,160

300

3,100

1,310

337

2,770

2,380

2,230

270

6,000

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

April 25

April 9

March 17

August 9

April 16

April 12

April 2

May 19

April 6

April 19

March 3 1

March 12

March 30

13.95

13.26

9.56

7.02

12.43

7.80

12.39

7.57

10.06

12.44

6.21

6.98

8.29

6,600

4,480

626

211

3,190

347

2,450

368

1,600

3,200

140

200

464

Annual peak discharge, from highest to lowest, and corresponding gage height

1970

1969

1971

1960

1979

1974

1962

1956

1965

1976

1966

1967

1978

1963

April 25

April 9

April 9

April 1 1

April 19

April 16

April 18

April 21

April 10

April 2

April 1

May 6

April 6

July 26

13.95

12.76

13.26

13.28

12.44

12.43

12.79

10.15

13.36

12.39

11.62

11.47

10.06

10.11

6,600

6,000

4,480

4,160

3,200

3,190

3,100

2,800

2,770

2,450

2,380

2,230

1,600

1,310

1959

1972

1982

1957

1977

1975

1964

1961

1968

1973

1981

1980

1958

April 3

March 17

March 30

August 1

May 19

April 12

April 9

March 25

March 25

August 9

March 12

March 3 1

JulyS

9.38

9.56

8.29

7.73

7.57

7.80

7.90

7.46

7.82

7.02

6.98

6.21

6.75

996

626

464

447

368

347

337

300

270

211

200

140

20.0

354
05099400 LITTLE SOUTH PEMBINA RIVER NEAR WALHALLA, ND-Conti

Monthly and annual mean discharges, in cubic feet per second

[Data were not rounded in accordance with U.S. Geological Survey publication standards; --, no data]

Year

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

Oct.

1.46

2.75

0.345

1.76

0.387

0.177

1.14

0.345

2.36

1.59

1.01

0.471

3.26

0.663

5.06

2.32

0.710

1.86

1.51

0.356

0.426

2.51

1.01

1.71

5.45

0.899

Nov.

2.86

1.62

0.363

1.57

0.280

0.177

0.993

0.397

0.983

1.20

0.932

0.447

1.94

0.778

3.94

2.40

1.19

0.929

1.44

0.360

0.283

0.765

0.768

1.02

3.00

0.911

Dec.

1.00

0.784

0.313

0.735

0.300

0.229

0.439

0.342

0.448

1.05

0.723

0.535

0.832

0.885

1.29

0.400

0.092

0.736

0.424

0.360

0.053

1.25

0.334

0.584

0.766

0.273

Jan.

0.648

0.016

0.381

0.681

0.165

0.084

0.074

0.268

0.300

0.559

0.834

0.671

0.668

0.503

0.629

0.241

0

0.521

0.100

0.360

0.004

0.602

0.226

0.278

0.126

0.080

Feb.

0.204

0.293

0.411

0.600

0

0

0

0.410

0.118

0.186

0.687

0.377

0.946

0.514

0.466

0.053

0

0.416

0.100

0.638

0

0.348

0.200

0.221

30.1

0.231

March

41.4

3.20

32.0

0.739

23.8

0

9.11

0.290

0.342

139.0

58.5

50.2

1.24

0.556

1.16

93.4

27.7

0.538

0.319

1.68

3.60

14.8

0.626

9.80

40.4

47.8

April

404.3

11.4

6.05

100.1

307.9

10.4

284.5

8.53

57.6

176.3

172.6

178.4

11.6

389.3

461.0

363.1

117.9

4.92

457.4

55.5

267.0

11.5

284.2

402.5

32.2

10.3

99.6

May

137.5

7.78

2.34

14.6

18.2

3.48

42.6

4.28

13.0

34.1

92.6

149.5

14.7

23.4

94.6

21.9

15.1

2.85

255.1

19.2

11.2

17.6

34.7

101.0

3.02

5.55

12.3

June

21.7

4.99

0.440

15.9

4.46

2.80

25.1

23.7

13.3

10.4

16.3

11.0

6.11

35.1

102.2

14.6

3.15

1.10

37.6

3.42

27.1

2.93

8.27

16.1

1.09

4.29

10.9

July

6.46

2.38

3.46

2.53

0.819

0.181

13.9

50.9

2.86

2.64

15.0

2.41

3.99

7.02

62.6

5.16

0.536

0.451

2.54

1.88

35.8

0.868

3.44

11.3

2.40

0.866

12.7
05099600 PEMBINA RIVER AT WALHALLA, ND

LOCATION.-Lat 48°54'50", long 97°55'00", inNE1 /4NE1 /4 sec.29, T.163 N., R.56 W., Pembina County, 

Hydrologic Unit 09020313, on left bank at downstream side of bridge on State Highway 32, at south 

edge of Walhalla, and 7 mi downstream from Little South Pembina River.

DRAINAGE AREA.-3,350 mi2 , approximately.

PERIOD OF RECORD.-October 1939 to September 1990, October 1993 to September 1994. Prior to 

October 1963, published as "near Walhalla."

GAGE.- Water-stage recorder. Datum of gage is 934 ft above sea level, from topographic map. Prior to 

Nov. 10, 1943, nonrecording gage and Nov. 10, 1943, to Sept. 30, 1963, water-stage recorder at site 

5.5 mi upstream at different datum.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 20,400 ft3/s, Apr. 18, 1950, gage

height, 19.2 ft former site and datum, 16.2 ft present site and datum, from rating curve extended above 

7,000 ft3/s on basis of contracted-opening measurement of peak flow; no flow at times in some years.

Annual mean discharge

1,000

8LU

O

800 -

600 -

400 -

200 -

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05099600 PEMBINA RIVER AT WALHALLA, ND-Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0.19

0.94

1.60

2.10

2.10

2.70

3.67

4.23

4.97

6.16

8.48

10.3

11.9

13.6

16.1

19.9

26.9

39.0

Feb.

0

0

0.19

0.43

0.97

1.50

2.20

2.70

2.70

3.40

4.66

5.60

7.03

8.34

10.8

14.1

16.9

22.3

31.1

March

0

0.25

1.20

1.60

3.17

3.71

4.42

5.68

7.87

9.23

11.7

14.5

18.1

23.1

31.0

57.0

121

243

720

April

10.9

29.6

61.5

92.1

131

170

208

254

322

408

538

665

800

958

1,180

1,500

2,030

2,810

3,980

May

40.0

64.3

81.0

98.8

134

166

199

240

299

386

486

580

681

793

912

1,090

1,360

1,940

2,810

June

16.4

33.2

47.4

65.5

85.8

108

132

158

186

216

250

287

329

371

431

492

595

740

1,110

July

2.20

6.83

16.5

27.6

36.5

44.9

53.6

63.8

76.7

94.3

115

139

164

190

221

258

318

412

639

Aug.

0.54

1.70

4.24

8.43

18.3

26.2

37.7

46.6

55.1

63.4

72.5

81.9

93.2

108

127

152

185

236

339

Sept.

0.16

0.96

3.17

4.44

8.65

18.7

27.4

34.3

41.0

47.5

53.9

60.2

71.3

83.2

96.7

110

137

172

243

Oct.

0.17

1.60

2.70

9.30

16.1

19.0

22.8

28.1

33.2

38.0

42.6

47.9

53.6

61.0

70.9

83.6

100

131

197
05099600 PEMBINA RIVER AT WALHALLA, ND-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

_ . Recurrence Exceedance . . . probability 'nterva 

K * (years)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 

(ft3/s)

1940-63 '1964-94

201 111

414 282

605 454

950 798

2,220 2,240

5,040 5,910

7,680 9,590

12,000 15,800

15,800 21,600

20,400 28,400

25,500 36,400

33,600 48,800

Maximum mean discharge 

(ft3/s)

3-day period 7-day period

87.0 72.0

208 175

326 276

556 472

1,490 1,260

3,790 3,180

6,060 5,040

9,860 8,100

13,400 10,900

17,600 14,200

22,500 17,900

ng ng

15-day period

60.1

144

225

381

1,000

2,480

3,900

6,220

8,330

10,800

13,500

ng

30-day period

44.6

110

174

300

809

2,050

3,240

5,210

7,000

9,070

11,400

ng

'Historic adjustment made to Log Pearson Type III peak frequency.

Probability of occurrence of annual low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 0

O.IO 10 0

0.20 5 0.153

0.50 2 1.99

3 7

0 0

0 0

0.156 0.184

2.05 2.25

14 30 60

000

0 0 0.332

0.271 0.427 0.922

2.47 3.06 3.64

90

0.036

0.405

1.56

6.88

120 183

0.375 0.589

1.02 1.62

2.55 4.54

8.66 18.8

359
05099600 PEMBINA RIVER AT WALHALLA, ND-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurrence

exceedance interval

probability (years)

14 30 14 30

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0.238

2.86

0

0

0.265

3.01

0

0

0.305

3.17

0

0

0.587

3.56

June-July-August

0.05

0.10

0.20

0.50

20

10

5

2

0.248

1.08

4.29

29.5

0.326

1.36

5.16

33.2

0.414

1.68

6.25

38.5

0.626

2.22

8.20

52.5

0

0

0.721

4.07

March-April-May

0

0

0.837

4.77

0

0

0.903

5.78

0.304

1.14

4.12

27.9

September-October-November

0.160

0.612

2.12

11.4

0.170

0.672

2.39

13.4

0.265

0.931

3.01

15.4

0.369

1.30

4.16

20.4

360
05099600 PEMBINA RIVER AT WALHALLA, ND-Continued

Annual peak discharge and corresponding gage height

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge

(ft3**)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1940

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

April 19

April 10

April 5

June 3

August 4

March 26

March 19

April 3

April 19

April 19

April 18

April5

March 31

June 3

July 6

April 2

April 25

March 23

April 6

April 3

April 12

April 9

April 19

July 26

June 19

April 11

5.52

11.03

12.45

6.15

6.28

9.20

9.24

5.83

14.94

13.18

19.20

8.22

7.28

4.48

5.45

10.75

12.89

6.22

6.52

7.90

12.50

3.46

11.74

7.72

5.43

12.68

1,000

3,200

5,000

1,420

1,470

3,020

2,900

1,280

7,280

5,840

20,400

2,310

700

642

1,160

3,400

5,990

725

500

2,000

5,690

334

5,110

2,340

796

4,960

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1994

March 3 1

April 21

March 18

April 20

April 26

April 1 1

April 9

August 9

April 27

May 17

April 17

May 19

April 6

April 20

April 7

April 1

June 7

Aprils

June 16

March 19

March 22

Aprils

April 4

April 16

April 1

March 22

14.82

12.10

9.40

14.58

15.08

14.56

9.81

3.79

15.19

13.38

9.81

4.31

9.97

13.32

3.83

3.16

6.96

6.32

3.23

8.57

9.31

10.39

2.98

6.67

7.64

7.03

4,700

4,530

1,400

8,440

10,200

10,200

3,160

358

13,800

1,470

4,530

610

3,800

9,130

400

260

2,100

1,660

374

1,860

2,800

5,300

321

1,000

1,200

1,800

Annual peak discharge, from highest to lowest, and corresponding gage height

1950

1974

1970

1971

1979

1969

1948

1956

1949

1960

1987

1962

1942

1965

1966

1967

1976

1978

April 18

April 27

April 26

April 11

April 20

April 20

April 19

April 25

April 19

April 12

April5

April 19

April5

April 1 1

March 3 1

April 21

April 17

April 6

19.20

15.19

15.08

14.56

13.32

14.58

14.94

12.89

13.18

12.50

10.39

11.74

12.45

12.68

14.82

12.10

9.81

9.97

20,400

13,800

10,200

10,200

9,130

8,440

7,280

5,990

5,840

5,690

5,300

5,110

5,000

4,960

4,700

4,530

4,530

3,800

1955

1941

1972

1945

1946

1986

1963

1951

1982

1959

1985

1994

1983

1944

1975

1943

1968

1947

April 2

April 10

April 9

March 26

March 19

March 22

July 26

Aprils

June 7

April 3

March 19

March 22

AprilS

August 4

May 17

June 3

March 18

AprilS

10.75

11.03

9.81

9.20

9.24

9.31

7.72

8.22

6.96

7.90

8.57

7.03

6.32

6.28

13.38

6.15

9.40

5.83

3,400

3,200

3,160

3,020

2,900

2,800

2,340

2,310

2,100

2,000

1,860

1,800

1,660

1,470

1,470

1,420

1,400

1,280

361
05099600 PEMBINA RIVER AT WALHALLA, ND-Continued

Annual peak discharge and corresponding gage height Continued

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(f^/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, from highest to lowest, and corresponding gage height Continued

1990

1954

1940

1989

1964

1957

1952

1953

April 1

July 6

April 19

April 16

June 19

March 23

March 3 1

June 3

7.64

5.45

5.52

6.67

5.43

6.22

7.28

4.48

1,200

1,160

1,000

1,000

796

725

700

642

1977

1958

1980

1984

1973

1961

1988

1981

May 19

April 6

April 7

June 16

August 9

April 9

April 4

April 1

4.31

6.52

3.83

3.23

3.79

3.46

2.98

3.16

610

500

400

374

358

334

321

260

362
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363
05099600 PEMBINA RIVER AT WALHALLA, ND-Continued

Monthly and annual mean discharges, in cubic feet per second Continued

[Data were not rounded in accordance with U.S. Geological Survey publication standards]

Year

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1994

Oct.

53.8

36.2

17.9

20.6

17.5

34.6

14.0

9.29

77.4

15.9

3.66

43.8

37.7

53.2

2.70

2.82

257.4

Nov.

34.3

22.4

9.86

9.64

11.4

22.9

18.3

8.27

27.3

11.0

4.54

30.3

11.2

31.3

3.76

2.83

174.5

Dec.

18.4

11.8

2.72

6.34

4.92

11.4

3.49

3.48

25.6

6.91

5.60

14.7

7.14

18.4

3.15

1.87

91.8

Jan.

9.76

13.3

2.50

2.92

4.00

4.80

.657

.966

9.52

3.73

2.48

11.2

6.78

1.37

2.47

2.45

40.1

Feb.

5.44

20.3

2.82

1.22

3.55

4.37

30.4

.303

5.75

4.07

0.707

4.91

7.09

0.345

0.782

1.94

30.5

March

7.28

58.3

21.2

22.4

4.05

10.3

96.4

66.1

209.8

40.0

578.5

488.7

49.1

44.4

0.455

21.1

374.3

April

357.3

3,249

49.6

1,136

2,155

201.3

215.8

626.2

880.2

89.5

712.9

880.4

2,107

88.7

159.9

336.6

1,075

May

1,172

1,526

77.9

434.5

3,182

75.5

125.8

663.0

455.0

86.0

243.4

728.0

776.9

40.8

79.7

98.5

521.4

June

585.4

425.9

37.2

141.3

758.4

23.4

46.7

500.1

204.5

110.7

118.0

364.8

208.2

9.42

41.0

164.1

246.4

July

241.1

224.4

10.6

52.1

227.6

6.48

16.1

225.5

58.6

18.1

74.6

160.1

70.3

3.06

7.61

38.4

165.5
05100000 PEMBINA RIVER AT NECHE, ND

LOCATION.--Lat 48°59'20", long 97°33'05", in SE1 /4NW1 /4 sec.31, T.164 N., R.53 W., Pembina

County, Hydrologic Unit 09020313, on right bank 0.3 mi east of State Highway 18, and at north edge 

ofNeche.

DRAINAGE AREA.--3,410 mi2, approximately.

PERIOD OF RECORD.-May 1903 to September 1908, June 1909 to September 1915, April 1919 to 

current year. Monthly discharge only for some periods, published in WSP 1308.

GAGE. Water-stage recorder and concrete control. Datum of gage is 809.69 ft above sea level. Prior to 

May 24, 1932, nonrecording gage at Burlington Northern Railway bridge 1 mi upstream, at same 

datum. May 25, 1932, to Apr. 17, 1939, nonrecording gage on bridge on State Highway 18, 500 ft 

downstream from railway bridge, at same datum.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 10,700 ft3/s, Apr. 20, 1950, from rating 

curve extended above 5,300 ft3/s, gage height, 21.58 ft, backwater from ice; maximum gage height, 

23.64 ft, Apr. 20, 1979, backwater from ice; no flow at times.

Annual mean discharge

1.UUU

Q

O 800 

O 

111 

CO

cc 111

0_

ti eoo

LU 

LL

O

m

o

Z 400

LU 

O 

CC

o

CO 200

Q

n

I 1 I I

-

_

I I I I

I

III

1 1

, III 1 II

1

ll

1

ll.l |, III

1

ll

1 1

,|

1 1

~

-

1 nil

.

i

00 00 00 00

O i- » 

Oi O> Oi

365
05100000 PEMBINA RIVER AT NECHE, ND-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence]

Maximum

Month

October

November

December

January

February

March

April

May

June

July

August

September

Annual

Discharge 

(ft3/s)

378

234

130

66.0

49.5

741

3,150

4,620

1,780

839

946

648

865

Water year 

of 

occurrence

1969

1945

1905

1960

1945

1945

1969

1974

1974

1904

1993

1993

1974

Minimum

Discharge 

(ft3/s)

0

0

0

0

0

0

24.7

11.8

6.56

0

0

0

3.96

Water year 

of 

occurrence

m

m

m

m

m

m

1939

1939

1940

1940

1939

m

1939

Discharge 

(ft3/s)

67.4

43.3

20.0

10.3

7.33

88.6

766

619

304

161

96.5

74.7

190

Mean

Standard 

deviation 

(ft3/s)

71.2

45.5

24.8

13.0

9.36

152

749

800

333

179

149

103

169

Coefficient of 

variation

1.05

1.05

1.24

1.26

1.28

1.72

0.98

1.29

1.10

1.11

1.54

1.38

0.89

Percentage 

of annual 

discharge

2.99

1.92

0.88

0.46

0.32

3.92

33.9

27.4

13.5

7.12

4.27

3.31

100

Annual flow duration

Q

Z

0

O

HI

CO

DC 

HI 

Q.

1-

Hl 

HI

LL

O

m

o

z

HI

O

DC

I

O 

CO

Q

1.UUU

700

500 

400

300

200

100

70

50 

40

30

20

10

7

5

4

3

2

1

0.7

8:1

0.3

0.2

r\ i

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rr

-

_

:

'-

'-

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'-

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-

-

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-

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10 20 30 40 50 60 70 80

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

90 95 98

366
05100000 PEMBINA RIVER AT NECHE, ND-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

_ . Recurrence Exceedance . . . 

. ..... interval probab,hty (years)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 3-day period 7-day period 15-day period 30-day period 

(ft*/*)

ng 69.9 58.8

264 172 146

391 272 231

623 463 396

1,470 1,210 1,040

3,360 2,950 2,530

5,100 4,550 3,890

7,860 7,070 6,030

10,300 9,280 7,910

13,200 11,800 10,000

16,400 14,500 12,300

21,300 ng ng

49.6

120

188

317

820

1,980

3,050

4,730

6,220

7,900

9,780

ng

40.0

95.6

149

252

656

1,600

2,490

3,910

5,190

6,650

8,300

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (ftVs)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- vai 

ability (years)

0.05 20 0

0.10 10 0

0.20 5 0

0.50 2 2.78

3 7 14 30 60

00000

00000

000 0.091 0.240

2.97 3.02 3.19 3.32 3.97

90

0

0.096

0.593

4.87

120 183

0.057 0.293

0.383 1.43

1.41 4.28

7.76 18.8

368
05100000 PEMBINA RIVER AT NECHE, ND-Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0.02

0.20

0.80

1.40

1.80

2.40

4.15

4.81

5.84

7.45

8.48

10.0

12.2

14.2

16.3

19.6

26.3

42.3

Feb.

0

0

0

0.10

0.70

1.20

1.60

2.20

2.90

3.90

4.34

4.78

6.00

8.01

9.88

12.0

14.8

18.4

25.7

March

0

0

0

0.90

1.90

2.90

3.56

4.52

6.06

7.29

9.77

12.1

16.4

22.1

30.7

47.3

111

207

462

April

8.29

26.4

67.9

106

141

169

199

236

275

329

382

493

612

736

925

1,170

1,500

2,090

3,070

May

45.8

67.9

93.5

115

142

165

186

204

232

276

344

412

500

624

759

909

1,150

1,580

2,360

June

24.1

41.1

56.6

75.3

94.4

113

131

149

167

192

219

252

288

329

379

437

532

672

1,010

July

6.08

13.1

20.2

27.9

37.9

48.3

58.9

69.0

79.7

92.5

106

122

139

171

205

240

291

369

572

Aug.

0.51

3.08

5.30

10.1

14.3

19.1

25.5

31.3

37.1

47.8

58.9

70.1

84.1

100

120

142

175

217

359

Sept.

0

0.49

2.30

5.10

9.53

13.8

18.8

25.6

34.1

43.5

52.8

59.7

66.5

76.7

93.5

113

139

191

278

Oct.

0

0.95

4.95

10.1

15.5

24.6

29.8

35.0

41.4

47.8

54.4

61.0

69.8

82.3

96.5

114

135

162

220
05100000 PEMBINA RIVER AT NECHE, ND-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0,

3.

0

0

,108 0.112

,10 3.21

0

0

0.163

3.34

0

0

0.229

3.64

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0

1.

4.

25.

0.128

10 h.AO

31 4.86

1 32.8

0.330

1.80

6.31

34.6

0.636

2.60

9.19

48.9

0

0

0.078

4.45

7 14 30

March-April-May

0

0

0.110

5.10

0

0

0.145

5.66

0

0.425

2.28

18.1

September-October-November

0

0.032

1.39

12.3

0

0.154

1.93

15.6

0

0.332

2.56

18.7

0

0.521

3.50

26.1

'Graphical interpretation.

369
05100000 PEMBINA RIVER AT NECHE, ND-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/*)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1904

1905

1906

1907

1908

1910

1911

1912

1913

1914

1915

1919

1920

1921

1922

1923

1924

1925

1926

1927

1928

1929

1930

1931

1932

1933

1934

1935

1936

1937

1938

1939

1940

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

May 2

Aprils

April 4

May 14

April 10

March 15

March 23

July 29

April 7

April 18

April 7

April 15

April 19

April 13

April 7

April 20

April 20

March 28

July 6

May 12

March 25

March 2 1

AprilS

April 9

April 9

May 26

April 9

June 18

April 15

June 8

March 20

April 4

April 20

April 14

April 7

March 27

August 6

March 29

March 24

April 11

April 21

April 22

April 20

April 7

20.90

9.80

9.00

13.60

7.70

6.50

8.90

8.50

21.50

4.80

6.20

15.10

7.10

7.40

--

17.80

6.70

18.30

5.00

17.80

-

9.00

19.00

13.00

13.60

-

9.76

5.38

17.34

4.32

8.11

6.30

7.97

18.23

19.96

12.82

-

16.54

16.27

10.19

20.36

20.83

21.58

14.95

4,300

1,370

800

2,190

927

685

900

1,000

3,870

388

180

2,430

361

733

1,300

3,120

674

2,350

318

3,110

1,270

750

2,900

1,580

1,240

1,180

780

364

2,530

237

730

52.0

816

2,830

3,550

1,400

1,200

2,440

2,070

1,320

3,770

5,010

10,700

2,000

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

April 3

June 10

July 7

AprilS

April 27

March 27

April 7

Aprils

April 14

April 3

April 21

July 28

April 17

April 13

April 3

April 23

March 28

April 21

April 27

April 12

April 16

March 27

April 28

May 18

April 19

May 21

April 1 1

April 20

April 7

April 1

June 8

April 9

April 7

March 20

March 24

April 7

April 6

April 17

April 3

June 16

April 1

July 30

April 2

8.18

6.74

7.97

20.11

20.90

7.63

7.17

14.40

21.00

9.49

20.97

10.55

10.07

19.21

21.20

16.83

9.34

21.32

21.47

22.22

15.87

8.27

22.92

11.03

19.87

9.26

19.31

23.64

8.85

9.28

11.68

11.86

9.35

13.97

14.83

21.41

8.74

10.08

10.50

10.22

19.59

18.10

13.24

550

250

846

2,700

5,200

661

442

1,800

4,040

372

3,650

1,150

1,080

3,600

4,300

2,900

734

7,360

7,070

7,350

2,550

224

10,300

1,500

4,430

261

3,800

9,500

435

285

1,520

1,630

312

1,750

2,390

5,510

420

1,000

1,000

888

3,900

3,580

2,040

370
05100000 PEMBINA RIVER AT NECHE, ND-Continued

Annual peak discharge and corresponding gage height Continued

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(fta/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, from highest to lowest, and corresponding gage height

1950

1974

1979

1969

1971

1970

1987

1956

1949

1976

1904

1966

1960

1992

1913

1978

1948

1962

1965

1993

1942

1923

1927

1930

1967

1941

1955

1972

1936

1945

1919

1986

1925

1907

1946

1994

1951

1959

1985

1983

1931

1982

1975

1943

April 20

April 28

April 20

April 21

April 12

April 27

April 7

April 27

April 22

April 19

May 2

April 3

April 14

April 1

April 7

April 1 1

April 21

April 21

April 13

July 30

April 7

April 20

May 12

AprilS

April 23

April 14

AprilS

April 16

April 15

March 29

April 15

March 24

March 28

May 14

March 24

April 2

April 7

AprilS

March 20

April 9

April 9

JuneS

May 18

March 27

21.58

22.92

23.64

21.32

22.22

21.47

21.41

20.90

20.83

19.87

20.90

21.20

21.00

19.59

21.50

19.31

20.36

20.97

19.21

18.10

19.96

17.80

17.80

19.00

16.83

18.23

20.11

15.87

17.34

16.54

15.10

14.83

18.30

13.60

16.27

13.24

14.95

14.40

13.97

11.86

13.00

11.68

11.03

12.82

10,700

10,300

9,500

7,360

7,350

7,070

5,510

5,200

5,010

4,430

4,300

4,300

4,040

3,900

3,870

3,800

3,770

3,650

3,600

3,580

3,550

3,120

3,110

2,900

2,900

2,830

2,700

2,550

2,530

2,440

2,430

2,390

2,350

2,190

2,070

2,040

2,000

,800

,750

,630

,580

,520

,500

,400

1905

1947

1922

1928

1932

1944

1933

1963

1964

1912

1989

1990

1908

1911

1991

1954

1940

1906

1934

1929

1968

1921

1938

1910

1924

1957

1952

1958

1980

1988

1914

1961

1935

1920

1926

1984

1981

1977

1953

1937

1973

1915

1939

AprilS

April 1 1

April 7

March 25

April 9

August 6

May 26

July 28

April 17

July 29

April 17

April 3

April 10

March 23

June 16

July 7

April 20

April 4

April 9

March 2 1

March 28

April 13

March 20

March 15

April 20

March 27

April 3

April 7

April 7

April 6

April 18

April 3

June 1 8

April 19

July 6

April 7

April 1

May 21

June 10

June 8

March 27

April 7

April 4

9.80

10.19

--

--

13.60

--

-

10.55

10.07

8.50

10.08

10.50

7.70

8.90

10.22

7.97

7.97

9.00

9.76

9.00

9.34

7.40

8.11

6.50

6.70

7.63

8.18

7.17

8.85

8.74

4.80

9.49

5.38

7.10

5.00

9.35

9.28

9.26

6.74

4.32

8.27

6.20

6.30

,370

,320

,300

,270

,240

,200

,180

,150

,080

1,000

1,000

1,000

927

900

888

846

816

800

780

750

734

733

730

685

674

661

550

442

435

420

388

372

364

361

318

312

285

261

250

237

224

180

52.0

371
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o *! o «* m

O4 O4 t~- O4 OO

m r4 ON "* O 

in ON O in «*

t~- r- r4 r4 oo

NO OO r-~ ON

m 04 in-

 ^J- 00 ON ON

m ON <N NO 

 ON in 

 Tf NO 04^ 

<N ON in

O OO ON r-~

ON ON OO NO OO

04 04 oo in oo "04'

O O 04

 «* ON O 00 ^t 

I*- o m <N o

NO NO ON ^OO^ <N' "

mm oo T^- o O in in

oo in ON ^o 

in

NO O OO "*

ON 04 ^ O O

oo in 04 t^

OO NO ON r- oo oo

oo ^j- 04 oo

ON

r~~ f~> ^f ^o oo

 r-~ in o r» 

04 <N 

o oo r-~ t~~

in 04 oo in 

m 04 <N «* rf

oo in in NO NO

NO ON m NO NO NO 04 in >O in

Ti- NO n- r*- n- oo n- ON m

o 

ON ON ON ON ON

oo "* r-~ m

in m oo oo oo 

oo NO ro in o

 m

04

 «* o in

04

m O O (N 

r-~ o ^t ON

NO O4 NO O O

 * 

04 in oo NO NO

o o o NO m 04 r-~ ON oo o 

 NO m

NO o NO oo m

in m t^ ON ON NO 04 in oo r-~ 

<N m in

04 ^t NO O '*

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in in NO

rj- <TI Tf 

rf OO r-~ ON 

OO <N *f\

NO

oo 04 in ^t r^J ON <N NO

OO O ON m

m 

O oo

00 

o o m 

m o o NO

O4 

NO

ON NO

in 04 04 O in

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m 

ON NO in 

 «* 04 m NO o

t*~ r~~ ro oo

rn <N

in t~~

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oo r-~

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oo ON in oo ON

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 <N m «* in in in in in in

ON ON ON ON ON

oo oo «* nON ON r- m 04 ON NO r-~ in 

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ON NO O4 O '* 

(-TI rjON

in O O fi

04 t~- in oo "*

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O4 ON ON OO m

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m 04

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oo *

 in <3-

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<N^O4 <N^ 

ON|" "

 ^j- in m

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 ^04 <N in oo^

oo 

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04 m

in 

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NO

<N in o in m m

-* 0 0 0 

 <N NO O

04

in m NO fi 

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m o 04 m ON

m o in in 

in o NO m

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in in in in NO

ON ON ON ON ON

ON NO O4 in "*

04 f^ in m «*

in m O ON o

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O oo m m in

m ON «* t~- rf 

ON r-~ in ON

O4

Tf VO t^

O4 m t^ ON «* 

00 04 ^t t^

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m «* m 

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t~- in in rf in

NO NO oo m m in ON NO o in 

040404'*

NO in O in f"-

O4 t^ O4 OO 

00 t~- ON O4 O

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Tf OO f"- OO NO

OO O4 NO OO O4 NO r» ON 04 NO 04 NO m oo

m ^j- NO

ON O4 O4

Tf ON

O4 

NO m t^ O4 O4

ON NO O4 r-

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m NO 0 ON 

m rf rf 04 ^J-

 «* o oo m -<Joo 

oo in o oo O4 ON NO ON

in O O4 NO NO 

04

ON

ON m O4 O4

 m 04 04

m

NO O4 O4 Tf ON

NO Tt- 04 in m 04 NO «* n-

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NO NO NO * & NO

ON ON ON ON ON

04 NO r-~ m 04

S

oo in t~- oo O ON t~- r-~

m 04 in in 

t~~ m oo 04 

 «* m 04 O «* rf 04 oo

m 

m oo oo m 04 

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oo r- ON

 in m ^ ON ^f ^^ ^f * & ^N 

04 m oo

in ON O in

ON r- o in 

oo r- 04 NO 

mm NO ^

ON NO

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NO * 0 

ON O^ OO^rn^ " " 04" 

r» ON

r^ 5 NO m

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m 04 in 04 

O O 

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NO oo r-~ in

0 0

in < NO m "*

 oo 04 m t^

O4 O4 

r» NO

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Tf t^ NO NO ON

m in 04

O OO O4 1<3-

 in ON OO in ON in

O ON oo oo

in m 04 r^ o 

oo 04 04 r- oo

m

NO t^ OO ON O

NO NO NO NO f"-

ON ON ON ON ON

N004Tf*0

o oo 04 in NO NO o in NO m ^j- m oo 04

m oo o o 

in NO ON in

O4 O NO NO OO

NO OO ON O

r-~ ON in ON 

m oo m ON ^

rf ON NO O4 NO

m in 04

o NO m r-~

 NO t^- noo in in t^ NO in m t^ NO

r- o

t^ . oo 

 ON r- O4 in 

oo NO 04 " *' '

m oo

oo o oo 

ON m O O4 NO

m^m^ 04" ' O^m m'

 NO r- r- 04

NO in o « oo

 ON ON « *

m

O O ON

oo ON r» 04 04

m o 04 NO t~-

NO ro OO NO ON

t~-

 ^j- in ^j- oo NO

 ^t rf 00 O 

04 m 04 04 

in ON 04 in oo

r-~ ON in oo oo r*- NO m m m

 «* NO ON oo oo

00 TT * O-t

 o r- NO NO

 04 m ^J- in

ON ON ON ON ON

373
sO sO sO sO 

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05100500 HERZOG CREEK NEAR CONCRETE, ND

LOCATION.-Lat 48°45'13", long 97°54'22", in SEV4 sec.20, T.161 N., R.56 W., Pembina County, 

Hydrologic Unit 09020313, on left bank 1.7 mi northeast of Concrete and 1.7 mi upstream from 

mouth.

DRAINAGE AREA.--18.9 mi2 .

PERIOD OF RECORD.-June 1954 to September 1977.

GAGE. Water-stage recorder and concrete control. Datum of gage is 1,108.95 ft above mean sea level 

(levels by Soil Conservation Service). Prior to Sept. 15, 1971, recording gage at site 0.5 mi 

downstream at same datum.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge observed, 260 ft3 /s, Apr. 2, 1955, gage 

height, 9.74 ft, from floodmarks, backwater from ice; maximum gage height, 12.59 ft, Mar. 25, 1976, 

backwater from ice; no flow at times each year.

Annual mean discharge

TU

Q

§ 8

O 

LJJ 

W

cc

LJJ 

Q.

f- fi UJ " 

LJJ 

U_

O

CD

O

Z 4

UJ 

0 

CC

X

o

CO 2

Q

n

I I 1 1 1 1 I 1 1 1 1 1 1 1 1 1 1 1 1

-

-

I 1 1 1 1 1 1 1 I 1 1 1 1 1

-

-

.

ill I 1 1

o> o>

375
05100500 HERZOG CREEK NEAR CONCRETE, ND-Continued

Statistics of monthly and annual mean discharges 

[m, more than 1 year of occurrence]

Month

Maximum Minimum Mean

_. . Water year _. . Water year _. . Standard Coeffi- Discharqe ' Discharge ' Discharge .... . 4 t

(ft'/S) °f (ft3/S) °f (ft3/S) *"£? C'en °f

v ' occurrence v occurrence ' (ft /s) variation

October 8.80 1974 0 m 1.76 2.64 1.50

November 2.20 1972 0 m 0.550 0.69 1.25

December 1.80 1963 0 m 0.160 0.37 2.37

January 1.04 1963 0 m 0.060 0.22 3.76

February 0.343 1958 0 m 0.030 0.08 3.11

March 11.6 1966 0 m 1.38 2.83 2.05

April 48.6 1971 0.050 1973 19.4 16.6 0.86

May 37.7 1974 0 1961 8.94 11.4 1.27

June 10.2 1962 0 1961 2.83 3.09 1.09

July 5.48 1966 0 m 1.23 1.64 1.33

August 2.27 1964 0 m 0.240 0.52 2.17

September 6.73 1972 0 m 0.920 1.79 1.93

Annual 7.41 1956 0.018 1961 3.11 2.28 0.73

100 

70

50 

40 

30

Z 20 

O

LJJ 10 

C 7

si! s

H 3

LU 0 

LU 2 

LL

O

kRGE, INCUBH oooKj '-JJkOI COI 0.1

00 0.07

Q 0.05 

0.04 

0.03

0.02 

n m

Annual flow duration

'-

r-

~ 

L 0

r 

^ 

r 

r 

jL .

I , i i , 1 i , , , , , , , , 1 , , , , 1 , i , , I , , , , 1 , , , , 1 i , i , 1 , , , , 1 , , , i 1 , , , I

Percentage 

of annual 

discharge

4.70

1.48

0.42

0.15

0.07

3.69

51.7

23.9

7.55

3.29

0.64

2.47

100

.:

:

-

~

-i

-_

-_

-.

i

~:

10 20 30 40 50 60 70 80

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

90 95 98

376
05100500 HERZOG CREEK NEAR CONCRETE, ND-Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.02

0.03

0.04

0.09

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.02

0.02

0.09

March

0

0

0

0

0

0

0

0

0

0

0

0

0

0.03

0.10

0.17

0.48

1.30

6.60

April

0

0

0.08

0.10

0.19

0.34

0.60

1.10

1.90

4.15

7.54

11.4

15.4

21.5

29.7

37.4

47.2

63.0

89.5

May

0

0.02

0.09

0.09

0.20

0.27

0.46

1.00

1.40

1.80

2.40

4.87

6.03

7.71

8.98

13.1

18.6

31.0

49.2

June

0

0

0.03

0.04

0.08

0.10

0.13

0.16

0.27

0.34

0.44

0.57

1.20

1.60

2.60

4.30

5.80

8.62

14.3

July

0

0

0

0

0

0.03

0.03

0.03

0.08

0.10

0.10

0.16

0.16

0.27

0.45

0.75

1.20

3.72

5.27

Aug.

0

0

0

0

0

0

0

0

0

0

0

0.02

0.02

0.03

0.04

0.09

0.16

0.43

1.70

Sept.

0

0

0

0

0

0

0

0

0

0

0

0.02

0.03

0.07

0.09

0.24

1.10

1.70

4.38

Oct.

0

0

0

0

0

0

0

0.03

0.07

0.09

0.18

0.18

0.29

0.29

0.46

0.59

1.50

6.51

11.6
05100500 HERZOG CREEK NEAR CONCRETE, ND-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Recurrence

. ..... interval probability . x (years)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum

instantaneous 

(ft3/s)

ng

13.3

20.1

32.0

70.5

137

185

247

293

337

379

434

Maximum mean discharge 

(ft3/s)

3-day period 7-day period 15-day period

0.248 0.182 0.124

2.21 1.57 1.03

5.71 4.05 2.64

14.9 10.7 7.05

54.9 41.7 29.0

112 92.2 69.8

135 117 93.0

152 137 114

158 146 124

162 151 132

164 154 136

ng ng ng

30-day period

0.095

0.688

1.69

4.38

18.1

46.9

65.8

85.5

96.7

105

112

ng

Probability of occurrence of annual low discharges

[ng, statistic not given]

Minimum mean discharge (ftVs)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- vai 

ability (years)

0.05 20 ng

O.IO 10 ng

0.20 5 ng

0.50 2 ng

3 7

ng ng

ng ng

ng ng

ng ng

14 30 60 90

ng ng ng 0

ng ng ng 0

ng ng ng 0

ng ng ng 0

120 183

0 0

0 0

0 0.034

0.0 1 6 0.203

378
05100500 HERZOG CREEK NEAR CONCRETE, ND-Continued

Probability of occurrence of seasonal low discharges

[ng, statistic not given]

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30

December- January-February

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0

ng

ng

ng

ng

0

0

0

0

0

0

0

0

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.022

1 7 14 30

March-April-May

ng 0

ng 0

ng 0

ng 0

0

0

0

0

0

0

0

0.036

September-October-November

0 0

0 0

0 0

0 0

0

0

0

0

0

0

0

0

379
05100500 HERZOG CREEK NEAR CONCRETE, ND-Continued

Annual peak discharge and corresponding gage height

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

April 2

April 25

March 2 1

March 26

April 6

April 13

April 1

April 20

July 26

June 19

April 1 1

May 5

9.74

8.38

7.54

5.22

4.79

6.66

3.12

6.67

5.81

5.25

7.41

6.24

260

243

90.0

20.0

35.0

100

2.00

102

63.0

46.0

115

79.0

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

May 7

June 25

April 10

April 25

April 9

April 14

August 9

April 20

April 29

April 6

October 26

6.52

3.61

7.29

6.65

7.92

10.29

9.89

10.85

10.27

10.64

9.83

94.0

8.60

129

106

128

94.0

16.0

122

53.0

44.0

36.0

Annual peak discharge, from highest to lowest, and corresponding gage height

1955

1956

1969

1971

1974

1965

1970

1962

1960

1967

1972

1957

April 2

April 25

April 10

April 9

April 20

April 11

April 25

April 20

April 13

May 7

April 14

March 2 1

9.74

8.38

7.29

7.92

10.85

7.41

6.65

6.67

6.66

6.52

10.29

7.54

260

243

129

128

122

115

106

102

100

94.0

94.0

90.0

1966

1963

1975

1964

1976

1977

1959

1958

1973

1968

1961

May 5

July 26

April 29

June 19

April 6

October 26

April 6

March 26

August 9

June 25

April 1

6.24

5.81

10.27

5.25

10.64

9.83

4.79

5.22

9.89

3.61

3.12

79.0

63.0

53.0

46.0

44.0

36.0

35.0

20.0

16.0

8.60

2.00

380
05100500 HERZOG CREEK NEAR CONCRETE, ND-Continued

Monthly and annual mean discharges, in cubic feet per second

[Data were not rounded in accordance with U.S. Geological Survey publication standards; , no data]

Year

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

Oct.

0.348

2.42

0.200

0

0.052

0

0

0

1.65

0.394

3.86

1.06

2.69

0.016

0.492

1.89

6.13

0.027

0.209

8.80

8.37

0.053

1.82

Nov.

_

0.110

0.207

0.880

0

0.060

0.023

0

0

2.02

0.137

0.270

1.23

1.88

0.726

0.455

0.067

0.582

2.20

0.139

1.24

0.273

0.083

0.167

Dec.

0.103

0.100

0.103

0.323

0

0

0

0

1.80

0.039

0.268

0.302

0.022

0.050

0

0.307

0.011

0.066

0.002

0.069

0.018

0.049

0

Jan.

0

0.123

0.010

0.006

0

0

0

0

1.04

0

0.023

0.039

0.020

0

0

0

0

0.004

0

0.025

0

0.031

0

Feb.

_

0

0.183

0.007

0.343

0

0

0

0

0

0

0

0

0.020

0

0

0

0

0

0

0.015

0

0.017

0

March

..

0.274

0.106

7.61

2.76

0.468

0.006

0.023

0

1.23

0.010

0

11.6

2.53

1.20

0.052

0

0

3.22

0.455

0.008

0.002

0.173

0.043

April

31.6

47.9

3.01

1.20

10.9

31.0

0.197

20.4

0.223

6.75

34.8

20.9

21.6

2.70

40.2

37.8

48.6

22.4

0.050

37.6

6.39

19.0

0.095

May

_

1.78

31.7

1.83

0.106

4.29

2.50

0

13.3

0.103

7.31

12.5

18.7

23.9

2.91

4.40

29.0

5.04

2.07

0.029

37.7

4.38

1.99

0.017

June

3.69

5.06

1.22

0.123

1.41

0.107

0

10.2

5.39

4.51

7.53

0.446

0.207

2.76

0.104

4.15

9.39

0.153

0.042

2.00

2.08

4.46

0.002

July

0.332

4.25

0.868

0.123

0.535

0.506

0

0

3.18

3.77

2.25

2.19

5.48

0.029

1.19

0.208

0.087

3.58

0.085

0.014

0.068

0.811

0.048

0.002
05101000 TONGUE RIVER AT AKRA, ND

LOCATION.-Lat 48°46'42", long 97°44'43", in SWV4 sec.10, T.161 N., R.55 W., Pembina County, 

Hydrologic Unit 09020313, on left bank 300 ft downstream from Renwick Dam, 0.9 mi northwest of 

Akra, and 6 mi west of Cavalier.

DRAINAGE AREA.--160 mi2 .

PERIOD OF RECORD.-April to June 1950 (WSP 1137-B), October 1951 to current year. Seasonal 

record since 1983.

GAGE.-Water-stage recorder. Datum of gage is 930.00 ft above sea level. Prior to July 10, 1954,

nonrecording gage 1.2 mi downstream at datum 30.00 ft lower. July 23, 1954, to Dec. 19, 1973, water 

stage recorder 2.7 mi downstream at datum 9.10 ft lower.

EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 11,800 ft3/s, Apr. 18, 1950; gage 

height, 48.70 ft; no flow at times.

Annual mean discharge

SECOND

oo cO C

DC 

UJ 

Q_

UJ 60

UJ

u.

0

CD 

O

Z 40

uJ 

O 

DC

O 

CO 20

O

n

I 1 I 1 I I 1 1 I 1 1 1 1 1 1

-

-

.

I I I I I I I I I I I I i ill

1 1

1 1

1 1 1

-

1

-

.

1 1 1

OOOOOOOOO)O)O)O)O)O)O)G)O)

10 o 10 o in o 10

co Is* Is* oo oo o> o>

O) O) O) O) O) O) O)

382
05101000 TONGUE RIVER AT AKRA, ND-Continued

Post-regulation period, 1955-94 

Statistics of monthly and annual mean discharges, post-regulation period

Maximum

_. . Water year 

.. ^ Discharge / Month ft3 M of

' occurrence

October 30.1 1981

November 22.7 1981

December 12.9 1971

January 7.27 1971

February 18.7 1981

March 135 1966

April 294 1956

May 225 1974

June 78.7 1964

July 107 1993

August 144 1993

September 28.3 1980

Annual 50.1 1956

1,000 : i i | i i i i | i i i i i i i 

700 '-

500 E400 - 

300 ~

Z 200 r

O :

UJ 100 r 

W 70 '-

* Q_ !R^ 40 r 

(_ 30 - 

LU on " UJ 20 r 

u_ :

o 10 1

!§ 7 r 

0 5r

z 4 r

~ 3 - UJ 

O 2 r 

CC :

X 1 r 

8 0.7 i5 83 i:

0.3 -

0.2 r

Q -| 1 I 1 1 1 1 J 1 1 1 1 1 1 1 1

2 5 10

Minimum Mean

Discharge 

(ft3/s)

0.5 1 3

0.560

0.700

1.23

0.571

0.216

0.428

1.63

0.473

0.086

0.208

0.096

3.11

Water year _. . Standard Coeffi- / Discharge . . .. . . . of .ft3 , . 3 deviation cient of

occurrence ( ' (ft3/s) variation

1962 6.70 6.60 0.98

1976 7.26 5.17 0.71

1976 4.82 3.25 0.68

1955 3.42 1.70 0.50

1962 3.91 3.58 0.92

1964 21.5 27.6 1.28

1991 108 93.2 0.86

1980 49.2 63.9 1.30

1988 18.2 19.5 1.07

1978 11.5 17.6 1.53

1988 7.99 22.6 2.83

1989 6.51 7.56 1.16

1961 22.9 14.1 0.62

Percentage 

of annual 

discharge

2.69

2.92

1.94

1.37

1.57

8.65

43.3

19.8

7.33

4.63

3.21

2.62

100

Annual flow duration

1 1 i i i i | > i

 9

i

1 1 i i i i . .

20 30

I , | , I I 1 | , I I I | I I 1 1 | 1 , 1 ! | I , , 1 | , , 1 |

* '..

1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

40 50 60 70 80 90 95

_:

j

-

-_

-j

-_

1

-_

4

i

98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

383
05101000 TONGUE RIVER AT AKRA, ND-Continued

Monthly and annual flow duration, in cubic feet per second, post-regulation period

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0.97

1.20

1.30

1.60

1.80

2.00

2.00

2.40

2.40

3.00

3.30

3.30

3.70

4.10

4.50

4.50

5.00

5.50

6.80

Feb.

0.60

0.70

1.10

1.30

1.50

1.80

1.80

1.80

2.10

2.50

2.90

3.40

3.40

4.00

4.00

4.00

5.90

6.91

11.4

March

0.16

0.43

1.10

1.40

1.40

1.80

2.30

3.00

4.05

4.70

5.35

6.67

11.2

17.0

22.6

30.1

38.8

53.8

104

April

0.33

1.90

6.00

9.34

12.2

15.7

19.9

24.5

29.8

39.3

52.6

66.8

85.0

108

134

170

232

343

488

May

2.10

3.97

5.32

6.43

7.85

9.32

11.8

14.3

16.6

19.1

21.6

25.3

29.5

36.8

47.7

63.7

82.7

128

228

June

0.30

1.00

1.90

2.99

3.51

4.05

4.60

5.40

5.89

7.79

9.67

11.7

13.9

16.1

20.1

26.1

34.0

50.2

77.0

July

0.12

0.42

1.10

1.40

1.90

2.64

3.06

3.48

3.93

4.38

5.17

5.71

7.33

8.47

10.5

12.7

17.1

25.0

37.9

Aug.

0.16

0.40

0.54

0.73

0.98

0.98

1.30

1.80

1.80

2.40

2.40

2.40

3.57

3.99

4.84

6.60

9.05

12.7

24.0

Sept.

0.14

0.24

0.33

0.58

0.78

0.78

1.00

1.40

1.90

2.50

3.37

3.92

4.68

6.12

7.46

9.64

13.0

17.5

25.9

Oct.

0.47

0.69

1.00

1.20

1.50

1.80

2.20

2.70

3.30

3.30

4.00

5.17

5.84

6.55

7.74

9.93

12.8

15.7

21.3
05101000 TONGUE RIVER AT AKRA, ND-Continued

Probability of occurrence of annual high discharges, post-regulation period

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

Recurrence Maximum

eedance interval instantaneous 3-day period 

probab,.,ty (yearg) (ft3/s)

0.99

0.95

0.90

0.80

0.50

0.20

0.10

0.04

0.02

0.01

0.005

0.002

1.01 11.7

1.05 32.2

1.11 52.8

1.25 92.8

2 244

5 556

10 811

25 1,170

50 1,450

100 1,740

200 2,030

500 2,410

15.4

43.4

71.1

122

296

590

789

1,030

1,190

1,330

1,460

ng

7-day period 15-day period 30-day period

10.9

32.3

54.2

95.8

242

502

682

900

1,050

1,190

1,310

ng

8.45

23.9

39.6

69.4

177

380

532

727

870

1,010

1,140

ng

5.87

16.4

27.1

47.3

121

261

368

507

610

711

808

ng

Probability of occurrence of annual low discharges, post-regulation period

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance

probability

0.05

0.10

0.20

0.50

Recurrence

inter- 1 3

vai 

(years)

20 0.037 0.056

10 0.063 0.088

5 0.114 0.149

2 0.331 0.392

7 14

0.065 0.076

0.102 0.126

0.172 0.226

0.448 0.611

30 60

0.151 0.336

0.231 0.467

0.373 0.683

0.855 1.33

90

0.484

0.673

0.980

1.88

120 183

0.633 1.18

0.942 1.58

1.44 2.20

2.72 3.87

385
05101000 TONGUE RIVER AT AKRA, ND-Continued

Probability of occurrence of seasonal low discharges, post-regulation period

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

0.396

0.555

0.819

1.63

0.414

0.579

0.852

1.69

0.509

0.667

0.950

1.77

0.704

0.906

1.22

2.10

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

0.047

0.096

0.209

0.720

0.067

0.137

0.296

1.00

0.094

0.188

0.400

1.36

0.207

0.378

0.738

2.24

0.037

0.087

0.229

1.11

7 14 30

March-April-May

0.064

0.139

0.335

1.48

0.103

0.225

0.543

2.44

0.423

0.834

1.79

6.52

September-October-November

0.067

0.123

0.243

0.775

0.142

0.218

0.368

1.01

0.174

0.264

0.440

1.20

0.270

0.424

0.728

2.01

386
05101000 TONGUE RIVER AT AKRA, ND-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1950

1952

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

April 18

April 1

May 31

June 12

April 2

April 19

March 22

July5

April5

April 14

March 27

April 23

June 12

June 20

April 14

April 2

May 9

March 27

April 14

April 29

April 12

April 16

48.70

38.48

35.86

35.53

13.23

14.23

6.12

2.38

9.04

8.67

4.56

7.03

4.57

5.38

8.10

7.35

6.28

5.55

7.85

7.99

7.75

5.79

11,800

260

178

187

700

1,350

340

78.0

485

654

60.0

473

210

286

580

492

412

160

606

567

568

325

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

March 24

April 22

April 25

April 9

July 18

April 10

April 22

April 6

March 25

April 14

AprilS

April 14

March 20

March 25

AprilS

April 6

April 24

April 24

June 19

March 9

July 29

April 12

9.85

15.61

10.38

13.31

10.40

14.28

16.75

11.86

10.73

12.95

12.89

12.89

12.13

12.35

13.79

8.71

9.48

8.82

9.45

10.77

14.11

14.11

118

595

76.0

313

64.0

429

900

180

76.0

308

354

33.0

243

275

480

38.0

49.0

15.0

35.0

80.0

492

138

Annual peak discharge, from highest to lowest, and corresponding gage height

1950

1956

1979

1955

1960

1969

1974

1965

1971

1970

1966

1993

1959

1987

1962

1978

1967

1983

1957

1972

April 18

April 19

April 22

April 2

April 14

April 14

April 22

April 14

April 12

April 29

April 2

July 29

April5

AprilS

April 23

April 10

May 9

AprilS

March 22

April 16

48.70

14.23

16.75

13.23

8.67

7.85

15.61

8.10

7.75

7.99

7.35

14.11

9.04

13.79

7.03

14.28

6.28

12.89

6.12

5.79

11,800

1,350

900

700

654

606

595

580

568

567

492

492

485

480

473

429

412

354

340

325

1976

1982

1964

1986

1952

1985

1963

1954

1980

1953

1968

1994

1973

1992

1958

1975

1981

1977

1961

1989

April 9

April 14

June 20

March 25

April 1

March 20

June 12

June 12

April 6

May 31

March 27

April 12

March 24

March 9

July 5

April 25

March 25

July 18

March 27

April 24

13.31

12.95

5.38

12.35

38.48

12.13

4.57

35.53

11.86

35.86

5.55

14.11

9.85

10.77

2.38

10.38

10.73

10.40

4.56

9.48

313

308

286

275

260

243

210

187

180

178

160

138

118

80.0

78.0

76.0

76.0

64.0

60.0

49.0

387
05101000 TONGUE RIVER AT AKRA, ND-Continued

Annual peak discharge and corresponding gage height-Continued

[--, no data]

Water

year

Date

Gage

height

(feet)

Peak

discharge

(ft^s)

Water

year

Date

Gage

height

(feet)

Peak

discharge

(ft3/s)

Annual peak discharge, from highest to lowest, and corresponding gage height Continued

1988 April 6 8.71 38.0 1984 April 14 12.89 33.0 

1991 June 19 9.45 35.0 1990 April 24 8.82 15.0

388
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I
05101000 TONGUE RIVER AT AKRA, ND-Continued

Monthly and annual mean discharges, in cubic feet per second-Continued

[Data were not rounded in accordance with U.S. Geological Survey publication standards; , no data]

Year Oct.

1986

1987

1988

1989

1990

1991

1992

1993

1994

Nov. Dec. Jan. Feb. March

82.3

39.6

5.27

15.5

1.55

0.734

34.4

20.8

40.2

April

124.9

269.7

14.1

14.4

6.27

0.428

21.3

48.0

71.7

May

68.0

20.5

6.81

4.96

6.76

10.5

15.6

32.1

12.5

June

10.8

7.61

0.473

5.04

6.12

17.4

7.66

23.6

3.13

July

22.8

3.28

0.453

0.936

1.95

6.10

8.52

107.3

5.16
05101500 TONGUE RIVER AT CAVALIER, ND

LOCATION.--Lat 48°47'55", long 97°37'35", in SE 1 /4NE1 /4 sec.4, T.161 N., R.54 W., on left abutment 

of dam 0.5 mi upstream from State Highway 5 in Cavalier.

DRAINAGE AREA.-167 mi2 .

PERIOD OF RECORD.-October 1938 to October 1951.

GAGE. Staff gage and concrete control. Datum of gage is 880.98 ft above mean sea level, datum of 

1929, Emerson-Crookston supplementary adjustment of 1941. Prior to July 21, 1946, wire-weight or 

chain gage at site 0.5 mi downstream at datum 11.74 ft lower.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge (not including bypass flow), 1,340 ft3/s, 

May 8, 1950, gage height, 4.58 ft; no flow for several months in some years. During the floods of 

April and May 1950 and probably during flood of April 1948, large amounts of water bypassed the 

gage and are not included in the records. Maximum discharge including bypass flow, 11,800 ft3/s, 

Apr. 18, 1950, on basis of contracted-opening measurement of peak flow at site about 5 mi upstream.

Annual mean discharge

1UU

Q

0 80 

O UJ 

W

CC 

UJ 

Q.

tn eo

UJ

LJ_

O

m

O

Z 40

UJ 

O 

CC

O 

W 20

Q 

r\

1 I I 1 I I I I I 1 1 1 1 1 I 1 1 1 1 1 1

-

^

_

1 1 I 1 1 I 1 1 1 1 1 il

-

-

_

1 I 1 1 1 1 1 1 1 2 £ S

391
05101500 TONGUE RIVER AT CAVALIER ND-Continued

Statistics of monthly and annual mean discharges

[m, more than 1 year of occurrence]

Maximum

M , Discharge Water year 

Month 3/s)9 of 

v ' occurrence

October 14.3 1942

November 45.3 1945

December 10.0 1945

January 3.65 1945

February 2.83 1945

March 184 1945

April 273 1948

May 406 1950

June 98.2 1943

July 30.9 1943

August 20.9 1942

September 23.5 1944

Annual 55.6 1950

100 c i i 41 ! i | i i i i i M.

70 '-

§8 '-

40 - 30 -

Z 20 r 

§ 10^

W 7^ 

CC c L

£ Sr

i- 3 r

UJ o UJ 2 r

LL :

^ 1 r

§ 0.7 ?

0 0.5 r

Z 0.4 r

5 °'3 

O 0.2 r 

CC :

I 0.1 T 

& 0.07 h

0 8:8! "

0.03 7

0.02 r

0.01 : ' ' ' ' ' 1 ' I 1 I 1 I ! I II

2 5 10

Minimum Mean

... . Wateryear ... . Standard Coeffi- Discharqe .' Discharge . . .. . . . 

m3te\ of iit*i*\ deviation cientof 

(n 'S) occurrence (n '*' (ft3/s) variation

0 m 3.62 3.76 1.04

0 m 5.90 12.0 2.03

0 m 1.98 2.64 1.33

0 m 0.970 1.10 1.13

0 m 0.510 0.81 1.57

0 m 30.2 54.4 1.80

14.2 1939 117 85.2 0.73

2.87 1939 53.7 108 2.00

1.24 1940 22.8 26.3 1.15

0.087 1939 8.57 9.41 1.10

0 1939 4.39 5.82 1.33

0 1939 5.58 7.41 1.33

1.57 1939 21.3 15.1 0.71

Annual flow duration

,,.... i , , ,,,,,,,,.,,,,, , ,,,, . .,,,,,, | i i i i

 

1 1 I 1 ! 1 1 1 1 I I 1 , , , , 1 , I , I 1 I I I I 1 I 1 , , 1 , , I , 1 I I , 1

20 30 40 50 60 70 80 90 95

Percentage 

of annual 

discharge

1.42

2.31

0.78

0.38

0.20

11.8

45.9

21.0

8.92

3.35

1.72

2.19

100

_:

:

-_

-_

_

-.

-

1

98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

392
05101500 TONGUE RIVER AT CAVALIER ND-Continued

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

8 65 

w

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

0

0

0

0

0

0.10

0.10 

0.28

0.49

0.49

0.69

0.87

1.20

1.50

1.50

1.70

1.90

2.70

3.40

Feb.

0

0

0

0

0

0

0 

0.10

0.10

0.19

0.29

0.29

0.29

0.48

0.60

1.00

1.20

1.20

2.60

March

0

0

0

0

0

0

0 

0.10

0.17

0.38

0.49

0.49

0.83

0.83

1.10

1.80

7.52

131

212

April

0.67

1.90

3.50

11.5

16.4

21.3

26.0 

31.4

37.2

42.8

49.7

59.6

74.0

92.1

120

164

216

354

574

May

2.00

3.10

4.74

7.15

9.43

11.3

12.7 

14.1

15.5

17.3

19.6

25.9

30.7

36.2

40.7

47.0

62.9

96.7

194

June

0.61

1.40

2.70

3.30

4.10

5.73

7.79 

8.51

10.4

12.3

14.5

16.4

18.5

21.5

25.9

30.8

36.8

48.7

79.8

July

0

0.20

0.39

0.62

0.97

1.50

1.90 

2.40

3.00

4.02

4.53

5.55

7.56

9.73

11.3

13.5

15.0

18.6

24.2

Aug.

0

0

0

0.10

0.36

0.69

1.10 

1.10

1.30

2.00

2.00

3.10

3.10

3.90

3.90

5.21

6.23

7.39

15.9

Sept.

0

0

0.10

0.19

0.36

0.68

1.00 

1.00

1.30

2.00

2.00

2.40

3.00

3.70

4.71

5.56

6.48

11.7

22.5

Oct.

0

0

0

0

0.10

1.10

1.80 

2.40

2.40

2.80

2.80

3.30

3.80

3.80

4.40

5.20

6.56

7.72

10.4
05101500 TONGUE RIVER AT CAVALIER ND-Continued

Probability of occurrence of annual high discharges

[ng, statistic not given]

Maximum mean discharge 

(ft3/s)

_ . Recurrence Exceedance . . . 

. ..... interval probab.hty (year8)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum 

instantaneous 3-day period 7-day period 15-day period 30-day period 

(ft3/s)

ng 13.9 12.0

ng 58.6 44.1

327 110 79.2

436 208 146

720 500 353

1,120 813 617

1,370 933 742

1,680 1,020 848

1,900 1,050 900

2,110 1,070 935

2,300 1,080 958

2,550 ng ng

7.39

28.9

53.2

100

251

446

538

616

653

678

695

ng

7.75

21.9

35.8

61.1

144

275

359

454

514

567

613

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 0

0.10 10 0

0.20 5 0

0.50 2 0

3 7 14 30 60

00000

00000

00000

0 0 0.121 0.145 0.310

90

0

0

0.014

0.497

120 183

0 0

0 0

0.229 0.750

0.699 1.77

394
05101500 TONGUE RIVER AT CAVALIER ND-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0.

0

0

0

170 0.179

0

0

0

0.183

0

0

0

0.226

June-July-August

0.05

0.10

0.20

0.50

20

10

5

2

0

0

0

0

0

0

0.659 1.04

0

0

0

1.31

0

0.028

0.233

1.65

0

0

0

0.179

7 14 30

March-April-May

0

0

0

0.183

0

0

0

'0.800

0

0

0

1.43

September-October-November

0

0

0.055

0.269

0

0

0.090

0.702

0

0

0.119

1.28

0

0

0.260

2.24

'Graphical interpretation.

395
05101500 TONGUE RIVER AT CAVALIER ND-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

1939 April 1 4.10 35.0 1945 March 27 -- 934

1940 April 20 6.77 288 1946 March 22 10.02 700

1941 April 11 12.26 1,080 1948 April 21 4.38 1,300

1942 April 14 -- 1,080 1949 April 10 -- 990

1943 March 27 - 500 1950 May 8 4.58 1,340

1944 April 12 - 450 1951 Aprils 2.60 420

Annual peak discharge, from highest to lowest, and corresponding gage height

1950

1948

1941

1942

1949

1945

May 8

April 21

April 1 1

April 14

April 10

March 27

4.58

4.38

12.26

-

--

--

1,340

1,300

1,080

1,080

990

934

1946

1943

1944

1951

1940

1939

March 22

March 27

April 12

Aprils

April 20

April 1

10.02

--

--

2.60

6.77

4.10

700

500

450

420

288

35.0

396
05101500 TONGUE RIVER AT CAVALIER ND-Continued

Monthly and annual mean discharges, in cubic feet per second

[Data were not rounded in accordance with U.S. Geological Survey publication standards]

Year

1939

1940

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

Oct.

0

0

0

14.3

2.54

0.845

3.64

3.45

3.81

5.09

3.01

5.13

5.28

Nov.

0

0

0.007

5.07

2.79

2.01

45.3

3.85

2.79

4.01

3.07

3.82

3.92

Dec.

0

0

0

3.02

0.529

1.26

10.0

2.45

0.932

3.03

1.00

1.30

2.28

Jan.

0

0

0

1.51

0.665

0.535

3.65

1.56

0.032

2.25

0.500

0.348

1.60

Feb.

0

0

0

0.300

0.325

0

2.83

1.30

0

0.586

0.100

0.254

1.00

March

0.484

0

0

26.4

59.5

0

184.4

91.2

0.484

0.868

1.47

0.526

27.0

April

14.2

37.8

145.5

267.4

85.8

65.0

60.3

32.7

82.2

273.0

175.9

178.1

106.0

May

2.87

5.41

9.60

59.6

29.6

10.9

42.5

11.9

13.5

64.4

22.5

405.9

19.5

June

1.28

1.24

17.7

17.8

98.2

10.8

30.0

6.15

35.9

15.3

8.78

45.5

7.65

July

0.087

0.261

1.40

3.32

30.9

7.96

17.1

2.80

9.11

19.8

2.50

14.2

1.97
05102500 RED RIVER OF THE NORTH AT EMERSON, MB

LOCATION.--Lat 49°00'30", long 97°12'40", in sec.2, T.I, R.2 E., Hydrologic Unit 09020311, on right 

bank 1,500 ft downstream from Canadian National Railway bridge in Emerson, 0.8 mi downstream 

from international boundary, 3.6 mi downstream from Pembina River, and at mile 154.3.

DRAINAGE AREA.-40,200 mi2, approximately, includes 3,800 mi2 in closed basins.

PERIOD OF RECORD.-March to November 1902 (gage heights only), May 1912 to September 1929 

(monthly discharge only, published in WSP 1308), October 1929 to current year.

GAGE.-Water-stage recorder. Datum of gage is Geodetic Survey of Canada Datum of 1929. See WSP 

1728 or 1913 for history of changes prior to Apr. 10, 1953.

EXTREMES FOR PERIOD OF RECORD.-Maximum discharge, 95,500 ft3/s, May 13, 1950, gage 

height, 90.89 ft; maximum gage height, 91.19 ft, May 1, 1979; minimum daily discharge, 0.9 ft3 /s, 

Feb. 6-8, 1937.

14,000

Q 12,000

O 

O 

LU 

W

cc

LU 

0_

10,000

LU 8,000 

U_

O 

CD

13

O 6,000

UJ 

O

< 4,000

I

O

CO

Q

2,000

Annual mean discharge

i i r i i i i i i i i i

i i i i i i ilL

oinomoinoino

COCOO>O>OOi-i-<M

398
05102500 RED RIVER OF THE NORTH AT EMERSON, MB-Continued

Statistics of monthly and annual mean discharges

Month D'^

October 4,530

November 5, 1 60

December 2,760

January 2,050

February 1,910

March 9,360

April 45,800

May 72,800

June 25,400

July 28,000

August 27,000

September 10,000

Annual 12,100

100,000 : i 

70,000 r

50,000 -

40,000 -

Z 30,000 -

O

O 20,000 -

HI :

w

DC

HI 10,000 -

Q. :

H 7,000 r

HI :

HI 5,000 -

Q 4'000 ~

OJ 3,000 -

^

O 2,000 r

Z ;

<Jj~ 1,000 -

< 700 r

O 500 -

W 400 -

0 300 -

200 r

100 ' 

2

Maximum

Water year

;ge of

occurrence

1986

1972

1966

1951

1952

1983

1966

1950

1962

1975

1993

1993

1950

i | i < i , | i i i 1 1 ,

i ,,., i ,,,,,,

5 10

Minimum

Discharge a ,y Discharge

(ft3/s) OT (ft3/s) 

occurrence v '

28.6 1937 1,460

23.7 1937 1,290

33.3 1937 949

7.05 1937 786

1.21 1937 749

2.25 1937 2,060

1,280 1938 12,600

663 1934 8,300

196 1934 4,910

121 1936 3,920

46.6 1934 2,040

23.6 1934 1,610

333 1934 3,390

Annual flow duration

1 1 1 1 i i i i i . i i i i 1 1 1 1 1 1 1 1 1 1 i i i i i i i

*

 0

, , , i , , , , i , , , , i , , , , i , , , , i , , , , i , ,

20 30 40 50 60 70

Mean

Standard Coeffideviation cient of 

(ft3/s) variation

1,190 0.81

967 0.75

691 0.73

564 0.72

518 0.69

2,130 1.03

9,070 0.72

11,000 1.32

4,470 0.91

4,190 1.07

3,170 1.55

1,620 1.00

2,300 0.68

0

0

, i , , , , i , , , i

80 90 95

Percentage 

of annuai 

discharge

3.59

3.17

2.34

1.94

1.85

5.06

30.9

20.4

12.1

9.66

5.02

3.97

100

-_

-_

-

-

-

-

-

-

~

-

-_

-_

-

-

-

:

98

PERCENT OF TIME FLOW WAS EQUALED OR EXCEEDED

399
05102500 RED RIVER OF THE NORTH AT EMERSON, MB-Continue

Monthly and annual flow duration, in cubic feet per second

Percentage 

of days 

discharge 

equaled or 

exceeded

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

Jan.

56.2

148

182

230

300

386

453

522

599

686

774

863

967

1,080

1,200

1,340

1,480

1,640

1,860

Feb.

50.0

158

207

254

314

378

442

504

578

657

738

818

908

999

1,120

1,290

1,430

1,560

1,690

March

162

260

344

426

502

597

700

797

893

999

1,150

1,300

1,480

1,670

1,890

2,190

2,660

4,460

9,580

April

986

1,570

2,050

2,580

3,150

3,660

4,470

5,430

6,400

7,660

9,190

11,100

13,500

16,200

19,100

22,400

26,000

30,000

38,900

May

1,030

1,410

1,700

2,050

2,400

2,660

2,950

3,310

3,680

4,040

4,500

5,060

5,840

6,970

8,220

10,500

14,200

21,100

31,400

June

574

886

1,270

1,490

1,750

2,070

2,300

2,550

2,850

3,200

3,620

4,140

4,770

5,450

6,220

7,210

8,820

10,900

15,400

July

289

471

679

905

1,150

1,400

1,710

2,000

2,310

2,650

3,020

3,400

3,800

4,270

4,810

5,500

6,550

8,650

12,700

Aug.

122

242

360

458

575

728

889

1,040

1,180

1,320

1,460

1,640

1,820

2,080

2,380

2,730

3,270

4,010

5,370

Sept.

77.1

208

321

431

527

644

799

926

1,040

1,160

1,290

1,430

1,620

1,840

2,090

2,380

2,730

3,250

4,560

Oct.

81.1

233

343

419

505

628

747

858

977

1,110

1,290

1,450

1,610

1,760

1,940

2,240

2,650

3,360

4,150
05102500 RED RIVER OF THE NORTH AT EMERSON, MB-Continued

Probability of occurrence of annual high discharges

fng, statistic not given]

Maximum mean discharge 

(ft3/s)

Recurrence

probability '" erva. (years)

0.99 1.01

0.95 1.05

0.90 1.11

0.80 1.25

0.50 2

0.20 5

0.10 10

0.04 25

0.02 50

0.01 100

0.005 200

0.002 500

Maximum

instantaneous 

(ft3/s)

3,040

5,530

7,500

10,700

20,100

35,900

47,500

63,200

75,300

87,700

100,000

118,000

3-day period 7-day period

2,890

5,330

7,260

10,400

19,700

35,400

46,900

62,400

74,400

86,600

99,000

ng

2,630

4,900

6,720

9,710

18,800

34,300

45,900

61,700

74,000

86,700

99,700

ng

15-day period

2,150

4,030

5,560

8,110

16,100

30,700

42,100

58,400

71,600

85,700

100,000

ng

30-day period

1,670

3,050

4,180

6,090

12,300

24,200

34,200

49,200

61,900

76,000

91,500

ng

Probability of occurrence of annual low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Non- Recurexceed- rence

ance inter- 1

prob- val 

ability (years)

0.05 20 27.6

O.IO 10 66.0

0.20 5 159

0.50 2 520

3 7

29.4 31.6

69.8 74.3

167 175

535 554

14

33.8

78.8

1 85

582

30 60

37.5 43.8

87.4 101

204 231

627 685

90

57.5

118

248

696

120 183

80. 1 97.9

147 179

280 340

729 886

401
05102500 RED RIVER OF THE NORTH AT EMERSON, MB-Continued

Probability of occurrence of seasonal low discharges

Minimum mean discharge (ft3/s)

Number of consecutive days

Nonexceedance 

probability

Recurrence 

interval 

(years)

1 7 14 30 1

December-January-February

0.05

0.10

0.20

0.50

20

10

5

2

34.2

82.0

197

621

35.9

85.6

204

638

38.0

89.6

211

653

41.2

96.6

225

684

53.9

1 26

288

784

June- July-August

0.05

0.10

0.20

0.50

20

10

5

2

90.9

167

324

918

104

187

352

968

115

204

382

146

253

462

1,050 1,240

59.2

113

224

640

7 14 30

March-April-May

59.0

138

314

839

63.1

146

332

918

115

261

583

1,600

September-October-November

66.1

126

249

704

71.9

137

273

773

85.8

163

321

890

402
05102500 RED RIVER OF THE NORTH AT EMERSON, MB-Continued

Annual peak discharge and corresponding gage height

[--, no data]

Water 

year

Date

Gage 

height 

(feet)1

Peak 

discharge 

(ft3/s)

Water 

year

Date

Gage 

height 

(feet)1

Peak 

discharge 

(ft3/s)

Annual peak discharge, by year, and corresponding gage height

2 1861

2 1882

2 1897

1913

1914

1915

1916

1917

1918

1919

1920

1921

1922

1923

1924

1925

1926

1927

1928

1929

1930

1931

1932

1933

1934

1935

1936

1937

1938

1939

1940

1941

1942

1943

1944

1945

1946

1947

1948

1949

1950

1951

1952

-

--

April 11

June 19

July 9

April 24

April 12

April 3

July 12

April 16

April 15

April 14

April 25

April 28

June 2 1

April 1

May 16

April 6

April 1

April 10

April 10

April 15

April 9

April 13

April 3

April 21

May 7

May 20

April 10

April 21

April 16

April 10

April 20

April 19

April 4

Aprils

April 28

April 27

April 15

May 13

April 15

April 24

95.00

90.00

91.00

74.52

58.36

69.06

85.74

--

-

--

--

-

69.40

74.98

57.25

-

61.02

71.58

67.91

-

72.51

59.29

71.64

--

-

59.65

68.16

56.55

-

60.77

66.84

76.94

78.77

77.54

66.82

--

-

76.07

87.62

77.13

90.89

74.55

-

~

--

25,600

7,260

20,100

46,200

25,900

4,990

13,400

26,700

12,800

18,900

26,000

6,320

17,500

8,000

20,500

16,800

19,200

20,800

7,940

18,900

11,000

4,800

5,470

18,000

5,840

7,530

6,700

14,600

27,800

27,900

29,500

12,300

29,400

24,100

28,400

51,800

29,200

95,500

26,600

24,200

1953

1954

1955

1956

1957

1958

1959

1960

1961

1962

1963

1964

1965

1966

1967

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

June 28

April 1 7

April 10

April 27

July 4

July 12

April 10

April 13

March 3 1

April 25

April 13

June 25

April 26

April 1 1

April 9

July 24

April 26

April 29

April 16

April 24

March 27

April 28

May 8

April 6

April 10

April 18

May 1

April 10

July 4

April 18

April 9

AprilS

March 29

April 7

April 9

AprilS

April 23

April 10

July 12

April 4

August 16

April 9

63.70

--

72.25

81.02

65.37

57.17

--

77.65

57.26

81.93

64.14

66.82

85.19

89.15

80.79

64.12

87.52

84.67

--

78.16

--

86.51

84.32

79.06

53.75

86.89

91.19

73.54

55.19

81.15

77.29

--

--

--

--

64.89

84.30

60.90

56.15

74.19

79.02

75.90

14,500

11,500

24,000

33,800

15,300

7,940

15,700

30,500

4,320

33,400

13,800

17,500

46,200

66,800

33,600

13,900

54,700

39,600

26,600

30,700

14,700

43,500

42,800

32,900

4,590

50,600

92,700

21,700

6,150

34,000

25,800

30,200

16,700

34,200

37,400

15,700

42,700

5,510

5,690

15,800

31,900

26,900

403
05102500 RED RIVER OF THE NORTH AT EMERSON, MB-Continued

Annual peak discharge and corresponding gage height Continued

[--, no data]

Water 

year

Date

Gage 

height 

(feet)1

Peak 

discharge 

(fl3/s)

Water 

year

Date

Gage 

height 

(feet)1

Peak 

discharge 

(fl3/s)

Annual peak discharge, from highest to lowest, and corresponding gage height

1950

1979

1966

1969

1948

1978

1916

1965

1974

1975

1989

1970

1987

1986

1982

1956

1967

1962

1976

1993

1972

1960

1984

1943

1945

1949

1947

1942

1941

1994

1920

1951

1971

1923

1917

1983

1913

1952

1946

1955

1980

1930

1927

May 13

May 1

April 1 1

April 26

April 27

April 18

April 24

April 26

April 28

May 8

April 23

April 29

April 9

April 7

April 18

April 27

April 9

April 25

April 6

August 16

April 24

April 13

AprilS

April 20

April 4

April 15

April 28

April 10

April 16

April 9

April 16

April 15

April 16

April 25

April 12

April 9

April 1 1

April 24

April5

April 10

April 10

April 10

May 16

90.89

91.19

89.15

87.52

87.62

86.89

85.74

85.19

86.51

84.32

84.30

84.67

-

-

81.15

81.02

80.79

81.93

79.06

79.02

78.16

77.65

-

77.54

-

77.13

76.07

78.77

76.94

75.90

--

74.55

-

74.98

-

77.29

74.52

-

--

72.25

73.54

72.51

71.58

95,500

92,700

66,800

54,700

51,800

50,600

46,200

46,200

43,500

42,800

42,700

39,600

37,400

34,200

34,000

33,800

33,600

33,400

32,900

31,900

30,700

30,500

30,200

29,500

29,400

29,200

28,400

27,900

27,800

26,900

26,700

26,600

26,600

26,000

25,900

25,800

25,600

24,200

24,100

24,000

21,700

20,800

20,500

1915

1929

1922

1932

1936

1925

1964

1928

1985

1992

1959

1988

1957

1973

1940

1953

1968

1963

1919

1921

1944

1954

1933

1926

1931

1958

1938

1914

1939

1924

1981

1937

1991

1990

1935

1918

1934

1977

1961

2 1861

2 1882

2 1897

July 9

April 1

April 14

April 15

April 21

June 21

June 25

April 6

March 29

April 4

April 10

AprilS

July 4

March 27

April 21

June 28

July 24

April 13

July 12

April 15

April 19

April 17

April 9

April 1

April 10

July 12

May 20

June 19

April 10

April 28

July 4

May 7

July 12

April 10

April 3

April 3

April 13

April 10

March 3 1

~

-

69.06

--

69.40

71.64

68.16

--

66.82

67.91

--

74.19

--

64.89

65.37

--

66.84

63.70

64.12

64.14

--

--

66.82

--

--

61.02

59.29

57.17

--

58.36

60.77

57.25

55.19

56.55

56.15

60.90

59.65

--

--

53.75

57.26

95.00

90.00

91.00

20,100

19,200

18,900

18,900

18,000

17,500

17,500

16,800

16,700

15,800

15,700

15,700

15,300

14,700

14,600

14,500

13,900

13,800

13,400

12,800

12,300

11,500

11,000

8,000

7,940

7,940

7,530

7,260

6,700

6,320

6,150

5,840

5,690

5,510

5,470

4,990

4,800

4,590

4,320

--

1 Datum is 700 feet Geodetic Survey of Canada Datum of 1929. 

2Data source unknown. Not used in statistics.

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Year Oct. Nov. 

1982 2,402 1,963 

1983 4,332 2,535 

1984 2,138 2,107 

1985 1,850 1,862 

1986 4,533 2,808 

1987 3,596 2,084 

1988 831.1 838.2 

1989 337.3 309.9 

1990 451.3 375.1 

1991 298.6 314.6 

1992 861.3 888.0 

1993 1,213 852.0 

1994 4,231 2,786 

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05102500 RED RIVER OF THE NORTH AT EMERSON, MB--Continu

Monthly and annual mean discharges, in cubic feet per second-Continued 

[Data were not rounded in accordance with U.S. Geological Survey publication standards; --,no data] 

Dec. Jan. Feb. March April M ay June July 

1,104 1,151 1,055 1,754 22,080 8,865 4,261 4,090 

1,935 1,614 1,377 9,361 12,530 3,948 4,835 6,393 

1,723 1,380 1,274 2,896 19,140 4,253 11,580 3,399 

1,444 1,207 1,154 6,461 7,385 9,120 7,935 7,374 

2,098 2,014 1,812 6,091 26,820 22,310 7,367 5,014 

1,983 1,804 1,616 6,895 22,500 4,242 3,682 3,109 

702.9 471.3 510.2 2,258 6,623 1,444 1,088 463.5 

256.6 262.9 379.8 396.8 21,480 6,886 2,692 1,138 

258.0 172.5 261.1 1,147 3,531 1,661 2,178 1,191 

232.1 177.1 245.6 594.4 2,097 2,821 2,306 3,971 

512.4 552.0 553.0 7,055 10,130 4,510 2,509 2,976 

930.8 858.4 1,016 1,310 15,000 4,136 4,630 10,530 

2,048 1,495 1,503 5,415 17,570 7,549 6,099 13,320