YELLOWSTONE RIVER BASIN
06329500 YELLOWSTONE RIVER NEAR SIDNEY, MT
(National stream quality accounting network station)
(National water-quality assessment program)
LOCATION.--Lat 47°40'42", long 104°09'22", in SW1/4NE1/4SW1/4 sec.9, T.22 N., R.59 E., Richland County, Hydrologic Unit 10100004,
on left bank at Montana-Dakota Utilities Company powerplant, 0.2 mi downstream from bridge on State Highway 23, 2.5 mi south
of Sidney, 3.0 mi downstream from Fox Creek, and at river mile 29.2.
DRAINAGE AREA.--69,103 mi2. Area at site 4.5 mi upstream, 68,812 mi2.
WATER-DISCHARGE RECORDS
PERIOD OF RECORD.--October 1910 to September 1931 (published as "at Intake"), October 1933 to current year. If monthly figures
of diversions to Lower Yellowstone Canal at Intake are added to records at this site, records equivalent to those published
as Yellowstone River at Glendive (1898-1910, 1931-34) can be obtained. Monthly discharge only for some periods, published in
WSP 1309. Monthly figures of diversions into Lower Yellowstone Canal prior to 1951 published in WSP 1309, 1951-60 published
in WSP 1729, 1961-65 published in WSP 1916, 1966-70 published in WSP 2116, and 1971 to current year are published in annual
reports.
GAGE.--Water-stage recorder. Datum of gage is 1,881.3 ft above sea level (levels by U.S. Army Corps of Engineers). Jan. 1, 1911,
to Sept. 30, 1931, nonrecording gage at site 32 miles upstream at different datum. Apr. 9, 1934, water-stage recorder at two
sites within 500 ft of highway bridge 0.2 mi upstream and May 17, 1945, to Apr. 3, 1952, nonrecording gage on same bridge at
datum 1.36 ft higher. Apr. 4, 1952, to Nov. 19, 1967, water-stage recorder at site 4.5 mi upstream at different datum.
REMARKS.--Water-discharge records good except those for estimated daily discharges, which are poor. Flow regulated to some extent>
by Bighorn Lake, usable capacity, 1,312,000 acre-ft, on the Bighorn River and on other tributary streams in Wyoming and Montana.
Diversion for irrigation of about 1,250,000 acres upstream from station. Lower Yellowstone Project Main Canal diverts from
left bank in NW1/4 sec.36, T.18 N., R.56 E., at Lower Yellowstone diversion dam at Intake about 36.6 mi upstream for irrigation
of about 52,000 acres of which about one-third lies upstream from station. U. S. Army Corps of Engineers satellite telemeter
at station.
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 8040 7890 7190 e6500 e6000 e6500 6130 7340 34000 16200 4780 3160
2 7690 7880 7290 e6300 e6000 e6500 6170 7120 34100 15300 4710 3300
3 8230 7830 7270 6200 e6000 e6600 6080 8240 31400 14600 4690 3470
4 8490 7850 7220 4850 e6200 e6600 6080 10600 29400 14900 4640 3670
5 8860 7870 7120 5750 e6500 e6600 5790 9180 26400 16000 4660 3760
6 8960 7920 6910 5180 e6500 e6700 5810 9630 25500 16700 4740 3890
7 8940 7760 6900 5890 e6400 e6600 5700 12000 27500 15200 4570 3980
8 8900 7460 6830 5690 e6300 e6600 5630 14100 28400 14300 4460 4010
9 8830 7560 6720 5760 e6300 e6600 5590 14300 29100 13800 4390 4030
10 8860 7600 6690 e6000 e6300 e6600 5610 13400 30400 11700 4390 4040
11 8770 7570 6610 e6000 e6300 e6600 5660 12200 32000 14500 4380 4060
12 8870 7530 6700 e5500 e6200 e6700 5400 11000 31600 13100 4240 4100
13 8880 7470 6380 e5000 e6100 e6800 5330 10100 29100 11400 3880 4200
14 8880 7460 6220 e5000 e6000 6560 5550 9590 25300 9880 3650 4210
15 8900 7480 6190 e5200 e6000 6600 5690 9120 22400 8900 3600 4180
16 8930 7460 6470 e5500 e5800 6530 5820 8400 22200 7850 3450 4160
17 8920 7460 6820 e6000 e6200 6460 5980 7590 23200 7240 3350 4080
18 8750 7450 6910 5230 e6200 6380 5930 6730 20800 6830 3260 4000
19 8530 7470 6470 6100 e6200 6280 6120 5960 22300 6570 3080 3930
20 8490 7440 6120 6410 e6200 6180 6390 5720 21400 6350 3030 3930
21 8550 7440 7010 6640 e6000 6090 6180 10000 19100 6410 2980 3950
22 8560 7280 6220 6530 e5900 6040 6010 12900 17900 6780 2920 4070
23 8550 7100 6600 6710 e6000 6040 6050 14400 20000 6940 2930 4280
24 8550 7050 e6700 6620 e6200 6030 6050 14100 20400 6910 2940 4530
25 8490 7020 e6800 e6500 e6500 5980 6020 15100 18200 6610 2930 4750
26 8450 6980 e6900 e6400 e6500 5940 6590 17800 18100 6130 2900 5360
27 8440 7000 e6800 e6300 e6500 5860 7900 21600 18700 5720 2880 5720
28 8460 7020 e6800 e6400 e6500 5880 8970 23600 19600 5430 2890 6000
29 8420 7080 e6700 e6800 e6500 5930 8660 26300 19700 5210 2900 6300
30 8430 7030 e6700 e6500 --- 6030 7890 27600 17900 5050 2920 6400
31 8140 --- e6600 e6200 --- 6010 --- 27200 --- 4880 3050 ---
TOTAL 266760 223410 208860 185660 180300 196820 186780 402920 736100 307390 114190 129520
MEAN 8605 7447 6737 5989 6217 6349 6226 13000 24540 9916 3684 4317
MAX 8960 7920 7290 6800 6500 6800 8970 27600 34100 16700 4780 6400
MIN 7690 6980 6120 4850 5800 5860 5330 5720 17900 4880 2880 3160
AC-FT 529100 443100 414300 368300 357600 390400 370500 799200 1460000 609700 226500 256900
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1911 - 2000, BY WATER YEAR (WY)*
MEAN 8371 7401 5999 5764 6924 11080 10430 18490 39260 23370 8851 7234
MAX 29130 12150 9594 13110 17750 25980 39160 38100 77280 55000 20470 16000
(WY) 1924 1924 1976 1925 1971 1972 1924 1928 1918 1917 1912 1941
MIN 3726 3700 3019 2087 2702 5191 2821 5409 11580 3311 1602 2389
(WY) 1922 1922 1961 1937 1936 1961 1961 1961 1919 1919 1961 1934
SUMMARY STATISTICS FOR 1999 CALENDAR YEAR FOR 2000 WATER YEAR WATER YEARS 1911 - 2000*
ANNUAL TOTAL 4837650 3138710
ANNUAL MEAN 13250 8576 12780
HIGHEST ANNUAL MEAN 21250 1924
LOWEST ANNUAL MEAN 5814 1934
HIGHEST DAILY MEAN 53500 Jun 26 34100 Jun 2 142000 Jun 21 1921
LOWEST DAILY MEAN 6120 Dec 20 2880 Aug 27 570 May 17 1961
ANNUAL SEVEN-DAY MINIMUM 6460 Dec 14 2910 Aug 24 1010 Aug 8 1961
INSTANTANEOUS PEAK FLOW a36000 Jun 1 c159000 Jun 21 1921
INSTANTANEOUS PEAK STAGE b11.86 Jan 15 b24.03 Mar 6 1994
INSTANTANEOUS LOW FLOW d470 May 17 1961
ANNUAL RUNOFF (AC-FT) 9595000 6226000 9257000
10 PERCENT EXCEEDS 29500 17000 28600
50 PERCENT EXCEEDS 8820 6600 8140
90 PERCENT EXCEEDS 7030 4090 4200
SUMMARY STATISTICS WATER YEARS 1911 - 1965** WATER YEARS 1967 - 2000***
ANNUAL TOTAL
ANNUAL MEAN 12890 12730
HIGHEST ANNUAL MEAN 21250 1924 19150 1997
LOWEST ANNUAL MEAN 5814 1934 7319 1988
HIGHEST DAILY MEAN 142000 Jun 21 1921 104000 May 23 1978
LOWEST DAILY MEAN 570 May 17 1961 800 Jan 2 1989
ANNUAL SEVEN-DAY MINIMUM 1010 Aug 8 1961 1500 Aug 21 1988
INSTANTANEOUS PEAK FLOW c159000 Jun 21 1921 g111000 May 23 1978
INSTANTANEOUS PEAK STAGE f21.85 Mar 22 1947 b24.03 Mar 6 1994
INSTANTANEOUS LOW FLOW d470 May 17 1961 d470 May 17 1961
ANNUAL RUNOFF (AC-FT) 9341000 9226000
10 PERCENT EXCEEDS 29900 27400
50 PERCENT EXCEEDS 7690 8860
90 PERCENT EXCEEDS 3820 5130
*--During period of operation 1911-31, 1934-current year. Published as "at Intake" 1911-31.
**--Prior to Bighorn Lake reaching operational level.
***-- After Bighorn Lake reached operational level.
a--Gage height, 11.09 ft.
b--Backwater from ice.
c--Gage height, 12.6 ft, site and datum then in use.
d--Gage height, 2.73 ft, site and datum then in use.
e--Estimated.
f--Backwater from ice, site and datum then in use.
g--Gage height, 20.02 ft.
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