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Water-Year Summary for Site 06130500

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Available Parameters
00060 Discharge(Mean)  

Water year 2021: 2020-10-01 to 2021-09-30

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USGS Water-Year Summary 2021
LOCATION - Lat 46°59'40.89", long 107°53'20.99" referenced to North American Datum of 1983, in SW 1/4 NW 1/4 NW 1/4 sec.11, T.14 N., R.30 E., Petroleum County, MT, Hydrologic Unit 10040205, on right bank, downstream side of bridge on State Highway 20, 0.3 mi west of Mosby, 10.9 mi downstream from Flatwillow Creek, and at river mile 60.0.
DRAINAGE AREA - 7,784 mi².
REVISIONS HISTORY - WSP 1559: 1935-36. WSP 1729: Drainage area.
PERIOD OF RECORD - May to November 1929, March 1930 to September 1932, February 1934 to current year. Monthly discharge only for some periods, published in Water Supply Paper (WSP) 1309.
GAGE - Water-stage recorder. Elevation of gage is 2,493.23 ft, referenced to the National Geodetic Vertical Datum of 1929. Dec. 6, 1962 to Mar. 14, 1966, water-stage recorder at site 900 ft downstream at different elevation. Mar. 15, 1966 to Dec. 11, 1973, water-stage recorder and nonrecording gages at site 400 ft downstream at same elevation. Dec. 12, 1973 to Oct. 1, 1981, nonrecording gage at site 400 ft downstream at same elevation. Oct. 1, 1981 to July 25, 1995, water-stage recorder at site 400 ft upstream from bridge at elevation 2.67 ft higher. See WSP 2116 for history of changes prior to 1962. U.S. Geological Survey satellite telemeter is located at the station.
REMARKS - Some regulation occurs by Bair (station number 06116500), Martinsdale (station number 06119000) and Deadmans Basin (station number 06122500) Reservoirs. Numerous diversions for irrigation occur upstream from station.