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Water-Year Summary for Site 06065500

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
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Available Parameters
00060 Discharge(Mean)  

Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023
LOCATION - Lat 46°45'58.29", long 111°53'19.66" referenced to North American Datum of 1983, in SE 1/4 NW 1/4 SW 1/4 sec.29, T.12 N., R.2 W., Lewis and Clark County, MT, Hydrologic Unit 10030101, 0.2 mi downstream from Hauser Dam, 1.3 mi upstream from Beaver Creek, 15 miles northeast of Helena, and at river mile 2,237.2.
DRAINAGE AREA - 16,669 mi².
REVISIONS HISTORY - 2009 MT-2012-1 (Gage height).
PERIOD OF RECORD - January 1923 to September 1942, October 1994 to current year. Monthly means for October, November, and December 1922 were from Congressional documents: 73rd Congress, 2nd session, H. Doc. 238, Missouri River. Published figures are in acre feet.
GAGE - Water-stage recorder. Elevation of gage is 3,580 ft, referenced to the North American Vertical Datum of 1988. Prior to Feb. 1, 1940, water-stage recorder 0.2 mi upstream at different datum. U.S. Geological Survey satellite telemeter is located at the station.
REMARKS - Flow is regulated by eight small irrigation reservoirs and two power plants, Clark Canyon Reservoir (station number 06015300) and Canyon Ferry Lake (station number 06058500). Numerous diversions for irrigation occur upstream from station.