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RED RIVER OF THE NORTH BASIN
05099600 PEMBINA RIVER AT WALHALLA, ND
LOCATION.--Lat 48°54'48", long 97°55'00", in SW1/4NE1/4NE1/4 sec.29, T.163 N., R.56 W., Pembina County, Hydrologic Unit
09020313, on southeast corner of State Highway 32 bridge, 0.5 mi south of Walhalla and 7 mi downstream from Little South
Pembina River.
DRAINAGE AREA.--3,350 mi2, approximately.
WATER-DISCHARGE RECORDS
PERIOD OF RECORD.--October 1939 to September 1990, April 2000 to September 2000. Prior to October 1963, published as "near
Walhalla".
REVISED RECORDS.--WSP 1388: 1943, 1950(P). WSP 1558: 1957. WSP 1728: Drainage area.
GAGE.--Water-stage recorder. Datum of gage is 933.34 ft above sea level. 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 difference datum.
REMARKS.--Records good except those for estimated daily discharges, which are poor. Discharges from Apr. 13 to June 12 based on
once daily observer readings.
EXTREMES FOR CURRENT YEAR.--Maximum discharge, 136 ft3/s, June 16, gage-height 2.59 ft; minimum daily discharge, 25 ft3/s, Aug.
26 and 27.
EXTREMES OUTSIDE PERIOD OF RECORD.--A peak gage height of 16.53 ft (from floodmark) discharge not determined, occurred on Apr.
25 or 26, 1977. A measured discharge of 22,500 ft3/s, gage height, 16.20 ft, occurred on Apr. 26, 1997.
DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
DAILY MEAN VALUES
DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP
1 --- --- --- --- --- --- --- 89 58 e47 35 38
2 --- --- --- --- --- --- --- 88 56 e46 32 35
3 --- --- --- --- --- --- --- 88 54 e45 32 38
4 --- --- --- --- --- --- --- 86 52 e47 32 35
5 --- --- --- --- --- --- --- 83 52 e49 33 37
6 --- --- --- --- --- --- --- 86 51 e52 41 38
7 --- --- --- --- --- --- --- 88 50 e52 39 35
8 --- --- --- --- --- --- --- 86 52 e49 36 36
9 --- --- --- --- --- --- --- 86 52 e46 41 35
10 --- --- --- --- --- --- --- 86 66 e45 41 31
11 --- --- --- --- --- --- --- 86 67 e56 39 31
12 --- --- --- --- --- --- --- 91 73 52 54 32
13 --- --- --- --- --- --- 124 95 68 46 49 34
14 --- --- --- --- --- --- 118 93 96 41 40 33
15 --- --- --- --- --- --- 107 93 87 38 36 31
16 --- --- --- --- --- --- 111 91 119 42 31 31
17 --- --- --- --- --- --- 116 89 91 41 33 32
18 --- --- --- --- --- --- 111 89 75 38 36 31
19 --- --- --- --- --- --- 107 89 67 36 32 32
20 --- --- --- --- --- --- 104 89 60 37 34 34
21 --- --- --- --- --- --- 111 89 59 40 36 31
22 --- --- --- --- --- --- 107 88 60 41 32 32
23 --- --- --- --- --- --- 105 86 52 40 30 30
24 --- --- --- --- --- --- 102 83 47 40 27 29
25 --- --- --- --- --- --- 100 80 51 40 26 30
26 --- --- --- --- --- --- 100 75 56 40 25 33
27 --- --- --- --- --- --- 95 69 52 37 25 32
28 --- --- --- --- --- --- 93 66 51 36 48 30
29 --- --- --- --- --- --- 91 63 49 36 67 28
30 --- --- --- --- --- --- 91 59 e48 34 43 27
31 --- --- --- --- --- --- --- 56 --- 35 38 ---
TOTAL --- --- --- --- --- --- --- 2585 1871 1324 1143 981
MEAN --- --- --- --- --- --- --- 83.4 62.4 42.7 36.9 32.7
MAX --- --- --- --- --- --- --- 95 119 56 67 38
MIN --- --- --- --- --- --- --- 56 47 34 25 27
AC-FT --- --- --- --- --- --- --- 5130 3710 2630 2270 1950
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1940 - 2000, BY WATER YEAR (WY)
MEAN 66.6 44.4 21.3 12.0 9.16 127 1060 783 342 169 115 75.6
MAX 600 454 216 120 68.9 1206 4950 4672 1933 814 960 432
(WY) 1995 1995 1995 1995 1995 1995 1995 1974 1974 1970 1995 1944
MIN .042 .15 .000 .000 .000 .000 49.6 18.8 2.83 .74 .10 .000
(WY) 1940 1941 1941 1940 1940 1940 1977 1940 1940 1940 1961 1940
SUMMARY STATISTICS WATER YEARS 1940 - 2000
ANNUAL MEAN 238
HIGHEST ANNUAL MEAN 1146 1995
LOWEST ANNUAL MEAN 9.77 1940
HIGHEST DAILY MEAN 13800 Apr 18 1950
LOWEST DAILY MEAN .00 Oct 14 1939
ANNUAL SEVEN-DAY MINIMUM .00 Oct 14 1939
INSTANTANEOUS PEAK FLOW a 20400 Apr 18 1950
INSTANTANEOUS PEAK STAGE b 16.20 Apr 18 1950
ANNUAL RUNOFF (AC-FT) 172100
10 PERCENT EXCEEDS 565
50 PERCENT EXCEEDS 39
90 PERCENT EXCEEDS 1.8
a From rating curve extended above 7,000 ft3/s on basis of contracted-opening measurement of peak flow
WATER-QUALITY RECORDS
PERIOD OF RECORD.--Water year 1962-90, 1992-95, July to September 2000.
WATER-QUALITY DATA, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
DIS-
CHARGE, SPE-
INST. CIFIC
CUBIC CON- TEMPER- TEMPER-
FEET DUCT- ATURE ATURE
DATE TIME PER ANCE AIR WATER
SECOND (US/CM) (DEG C) (DEG C)
(00061) (00095) (00020) (00010)
JUL
12... 1335 51 882 29.5 26.0
AUG
29... 1020 67 838 19.5 17.0
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