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KNIFE RIVER BASIN
06340000 SPRING CREEK AT ZAP, ND
LOCATION.--Lat 47°17'10", long 101°55'31", in SE1/4SE1/4SW1/4 sec.14, T.144 N., R.89 W., Mercer County, Hydrologic Unit
10130201, on left bank 250 ft downstream from Burlington Northern Railway bridge in Zap and 9 mi upstream from mouth.
DRAINAGE AREA.--549 mi2.
WATER-DISCHARGE RECORDS
PERIOD OF RECORD.--March to September 1924, October 1945 to current year.
GAGE.--Water-stage recorder. Datum of gage is 1,819.39 ft above sea level. Mar. 4 to Sept. 30, 1924, non-recording gage at site
250 ft upstream at different datum. Oct. 1, 1945, to Sept. 30, 1947, nonrecording gage 250 ft upstream at datum 1.12 ft
higher.
REMARKS.--Records good except for periods of estimated discharge, which are poor. Flow slightly regulated by Lake Ilo, 56 mi
upstream, capacity 7,130 acre-ft.
EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum stage known occurred in about 1902, from ice jam. Floods of February 1913 and March
1943 reached a stage of about 20 ft and 19.5 ft, respectively, from information by local residents.
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 9.8 12 e13 e8.5 e5.7 251 14 14 11 8.2 6.1 5.0
2 9.8 11 e13 e8.0 e5.7 141 14 13 11 8.3 6.0 5.3
3 12 12 e13 e7.0 e6.0 100 15 12 9.8 8.9 6.6 5.6
4 13 12 e13 e6.0 e6.1 73 14 11 e9.9 8.8 7.1 6.0
5 15 12 e13 e6.2 e6.3 62 15 11 e10 8.8 6.8 6.0
6 13 13 e13 e6.5 e6.4 59 14 12 10 9.3 6.6 5.9
7 17 13 e13 e6.6 e6.5 53 14 13 9.8 10 6.7 5.7
8 18 13 e13 e6.7 e6.3 43 14 16 8.9 8.9 6.6 5.6
9 16 13 e12 e6.8 e6.1 34 14 16 8.6 8.9 6.5 5.3
10 14 13 e12 e6.7 e6.0 26 13 15 8.2 8.9 6.1 5.2
11 12 13 e12 e6.5 e5.8 31 13 20 7.7 10 6.7 5.2
12 12 15 e12 e6.3 e5.6 27 13 22 7.4 27 6.9 5.3
13 14 16 e12 e6.0 e5.5 23 12 22 7.9 18 6.5 5.2
14 15 15 e12 e6.1 e5.3 22 14 22 12 12 6.5 e5.1
15 15 15 e12 e6.2 e5.2 17 16 21 12 9.1 6.3 e4.9
16 16 15 e11 e6.3 e5.3 16 16 19 14 7.7 6.0 4.7
17 17 e15 e11 e6.3 e5.2 18 17 17 14 7.0 5.9 4.5
18 18 e14 e11 e6.6 e5.1 20 20 15 15 7.0 5.8 4.5
19 20 e14 e10 e6.4 e5.0 22 22 13 15 7.7 5.6 4.8
20 18 e14 e8.0 e6.3 e6.0 20 26 13 14 9.0 5.6 5.4
21 17 e14 e7.0 e6.2 e6.0 20 25 12 12 9.8 5.9 5.2
22 15 e13 e6.5 e6.1 e6.0 21 21 11 11 11 6.0 6.6
23 15 e12 e6.0 e6.1 e10 20 19 10 10 9.5 5.5 6.6
24 15 e11 e6.5 e6.1 e50 20 17 12 9.6 8.1 5.2 6.5
25 14 e11 e7.0 e6.2 e280 20 17 13 9.5 7.5 5.3 6.3
26 13 e12 e7.5 e6.0 e200 19 17 11 9.2 7.2 5.2 6.0
27 14 e12 e8.0 e5.8 e170 17 17 11 8.9 6.9 5.2 6.0
28 13 e12 e9.0 e5.7 e180 17 16 10 8.4 6.8 5.0 6.1
29 13 e12 e10 e5.8 e200 15 14 9.8 8.1 6.7 4.8 6.3
30 13 e12 e9.5 e5.7 --- 15 14 9.7 8.1 6.6 4.9 6.0
31 13 --- e9.0 e5.6 --- 15 --- 9.3 --- 6.3 5.0 ---
TOTAL 449.6 391 325.0 197.3 1217.1 1257 487 435.8 311.0 289.9 184.9 166.8
MEAN 14.5 13.0 10.5 6.36 42.0 40.5 16.2 14.1 10.4 9.35 5.96 5.56
MAX 20 16 13 8.5 280 251 26 22 15 27 7.1 6.6
MIN 9.8 11 6.0 5.6 5.0 15 12 9.3 7.4 6.3 4.8 4.5
AC-FT 892 776 645 391 2410 2490 966 864 617 575 367 331
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1924 - 2000, BY WATER YEAR (WY)
MEAN 10.7 9.73 6.71 5.76 27.8 160 140 37.0 42.3 25.7 10.7 7.78
MAX 74.4 51.9 21.2 30.6 183 933 1044 292 290 178 53.2 16.5
(WY) 1983 1983 1973 1973 1996 1972 1952 1970 1971 1962 1990 1986
MIN 1.76 2.88 .80 .000 .000 3.39 9.41 5.77 3.10 1.84 .96 1.10
(WY) 1959 1962 1962 1959 1949 1949 1992 1992 1961 1961 1961 1958
SUMMARY STATISTICS FOR 1999 CALENDAR YEAR FOR 2000 WATER YEAR WATER YEARS 1924 - 2000
ANNUAL TOTAL 23985.4 5712.4
ANNUAL MEAN 65.7 15.6 40.4
HIGHEST ANNUAL MEAN 99.5 1972
LOWEST ANNUAL MEAN 6.95 1961
HIGHEST DAILY MEAN 2620 Mar 20 280 Feb 25 5640 Apr 7 1952
LOWEST DAILY MEAN 6.0 Dec 23 4.5 Sep 17 .00 Jan 30 1946
ANNUAL SEVEN-DAY MINIMUM 6.5 Jan 6 4.8 Sep 13 .00 Jan 30 1946
INSTANTANEOUS PEAK FLOW a 300 Feb 25 6130 Apr 7 1952
INSTANTANEOUS PEAK STAGE 7.51 Feb 25 20.70 Mar 15 1972
INSTANTANEOUS LOW FLOW .00 Jan 30 1946
ANNUAL RUNOFF (AC-FT) 47580 11330 29240
10 PERCENT EXCEEDS 96 20 54
50 PERCENT EXCEEDS 14 11 9.0
90 PERCENT EXCEEDS 7.3 5.6 3.0
a About
e Estimated
WATER-QUALITY RECORDS
PERIOD OF RECORD.--Water years 1969-70, 1974 to current year.
WATER-QUALITY DATA, WATER YEAR OCTOBER 1999 TO SEPTEMBER 2000
DIS- PH PH SPE-
CHARGE, WATER WATER CIFIC SPE- HARD- MAGNE-
INST. WHOLE WHOLE CON- CIFIC NESS CALCIUM SIUM,
CUBIC FIELD LAB DUCT- CON- TEMPER- TEMPER- TOTAL DIS- DIS-
FEET (STAND- (STAND- ANCE DUCT- ATURE ATURE (MG/L SOLVED SOLVED
DATE TIME PER ARD ARD LAB ANCE AIR WATER AS (MG/L (MG/L
SECOND UNITS) UNITS) (US/CM) (US/CM) (DEG C) (DEG C) CACO3) AS CA) AS MG)
(00061) (00400) (00403) (90095) (00095) (00020) (00010) (00900) (00915) (00925)
OCT
21... 1000 17 -- -- -- 1850 3.0 5.5 -- -- --
DEC
08... 0950 13 -- -- -- 2050 3.0 .5 -- -- --
JAN
18... 1035 6.6 -- -- -- 1890 -10.0 .0 -- -- --
APR
06... 1020 14 8.4 -- 1730 1760 -1.0 7.0 490 94.0 62.0
MAY
03... 1030 12 -- -- -- 1980 10.0 11.0 -- -- --
31... 1245 8.9 -- -- -- 2050 30.0 -- -- -- --
AUG
21... 1120 5.9 8.1 8.1 -- 1790 21.0 20.0 360 49.0 58.0
SEP
27... 0950 6.0 -- -- -- 1790 9.0 10.1 -- -- --
POTAS- SODIUM UNFLTRD CHLO- FLUO- SOLIDS, RESIDUE
SIUM, AD- SODIUM, TIT 4.5 RIDE, RIDE, SULFATE DIS- AT 180
DIS- SORP- DIS- LAB DIS- DIS- DIS- SOLVED DEG. C
SOLVED TION SOLVED (MG/L SOLVED SOLVED SOLVED (TONS DIS-
DATE (MG/L RATIO (MG/L SODIUM AS (MG/L (MG/L (MG/L PER SOLVED
AS K) AS NA) PERCENT CACO3) AS CL) AS F) AS SO4) DAY) (MG/L)
(00935) (00931) (00930) (00932) (90410) (00940) (00950) (00945) (70302) (70300)
OCT
21... -- -- -- -- -- -- -- -- -- --
DEC
08... -- -- -- -- -- -- -- -- -- --
JAN
18... -- -- -- -- -- -- -- -- -- --
APR
06... 11.0 5 230 50 417 9.3 .4 580 46.6 1270
MAY
03... -- -- -- -- -- -- -- -- -- --
31... -- -- -- -- -- -- -- -- -- --
AUG
21... 10.0 7 300 64 399 12.0 .4 590 21.0 1310
SEP
27... -- -- -- -- -- -- -- -- -- --
SOLIDS,
SUM OF MANGA- MOLYB- SELE- STRON-
CONSTI- ARSENIC IRON, LEAD, LITHIUM NESE, MERCURY DENUM, NIUM, TIUM,
TUENTS, DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS- DIS-
DIS- SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED SOLVED
DATE SOLVED (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L (UG/L
(MG/L) AS AS) AS FE) AS PB) AS LI) AS MN) AS HG) AS MO) AS SE) AS SR)
(70301) (01000) (01046) (01049) (01130) (01056) (71890) (01060) (01145) (01080)
OCT
21... -- -- -- -- -- -- -- -- -- --
DEC
08... -- -- -- -- -- -- -- -- -- --
JAN
18... -- -- -- -- -- -- -- -- -- --
APR
06... 1240 <1.0 60 1 60.0 60 <.1 <1 <1.0 1600
MAY
03... -- -- -- -- -- -- -- -- -- --
31... -- -- -- -- -- -- -- -- -- --
AUG
21... 1260 1.0 50 <1 80.0 30 <.1 2 <1.0 1200
SEP
27... -- -- -- -- -- -- -- -- -- --
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