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Water-Year Summary for Site 06185500

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Available Parameters
00060 Discharge(Mean)  

Water year 2018: 2018-10-01 to 2019-09-30
 

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USGS Water-Year Summary 2018
06185500 MISSOURI RIVER NEAR CULBERTSON, MT
LOCATION - Lat 48°07'24.60", long 104°28'23.88" referenced to North American Datum of 1983, in SE 1/4 NW 1/4 sec.3, T.27 N., R.56 E., Richland County, MT, Hydrologic Unit 10060005, On right bank at upstream side of bridge on State Highway 16, 2.5 mi southeast of Culbertson, 10 mi downstream from Big Muddy Creek, and at river mile 1,620.76.
DRAINAGE AREA - 89,858 mi². revised.
REVISIONS HISTORY - Water Supply Paper 1729: Drainage area. WDR MT-2013: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - July 1941 to December 1951, April 1958 to current year.
GAGE - Water-stage recorder. Elevation of gage is 1,883.4 ft, referenced to the National Geodetic Vertical Datum of 1929 (U.S. Army Corps of Engineers bench mark). July 1 to Nov. 6, 1941, water-stage recorder at site 400 ft. upstream at elevation 0.11 ft. higher. Nov. 7, 1941, to Aug. 17, 1950, water-stage recorder at site 580 ft. downstream at present elevation. Aug. 18, 1950, to Dec. 31, 1951, nonrecording gage on bridge at present elevation. Apr. 1, 1958, to Nov. 1, 1967, water-stage recorder at site 580 ft. downstream at present elevation.
REMARKS -
10-01-2016 to 09-30-2017: records are good, except estimated records are poor.
10-01-2015 to 09-30-2016: records are good, except estimated records are poor.
10-01-2014 to 09-30-2015: records are good, except estimated records are poor.
10-01-2013 to 09-30-2014: records are good, except estimated records are poor. 

Flow is partly regulated by Fort Peck Lake (station number 06131500) and many other reservoirs 
upstream from station. Diversions for irrigation of about 1,030,400 acres occur upstream from station. 
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 1946, 1965 to 1986, 1991 to 1994, October 1996 to current year.
PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: July 1965 to September 1981. WATER TEMPERATURE: July 1965 to September 1979, seasonal records starting July 18, 2002 to September 2004. SUSPENDED-SEDIMENT DISCHARGE: October 1971 to September 1976.
REMARKS - Several unpublished observations of specific conductance and water temperature were made during the year.
EXTREMES FOR PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Maximum daily, 941 microsiemens per centimeter (uS/cm) at 25°C, Jan. 19, 1980; minimum daily, 338 uS/cm at 25°C, Mar. 30, 1967. WATER TEMPERATURE: Maximum, 26.0°C, Aug. 14, 2003; minimum, 0.0°C, on many days during winter period. SEDIMENT CONCENTRATION: Maximum daily mean, 2,940 mg/L, Aug. 15, 1974; minimum daily mean, 30 mg/L, Jan. 13, 1975. SEDIMENT LOAD: Maximum daily, 147,000 tons, June 5, 1975; minimum daily, 421 tons, Jan. 13, 1975.