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Water-Year Summary for Site 12342500

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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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
12342500 WEST FORK BITTERROOT RIVER NEAR CONNER, MT
LOCATION - Lat 45°43'29.38", long 114°16'56.26" referenced to North American Datum of 1983, in SE 1/4 NE 1/4 NW 1/4 sec.26, T.1 S., R.22 W., Ravalli County, MT, Hydrologic Unit 17010205, on right bank 0.6 mi downstream from Painted Rocks Lake, 6.4 mi upstream from Nez Perce Creek, 16.1 mi southwest of Conner, and at river mile 19.2.
DRAINAGE AREA - 317 mi².
REVISIONS HISTORY - Water Supply Paper 1246: Drainage area.  Date for maximum discharge and maximum gage height for water year 2017 were revised on April 2, 2020, based on findings from a routine record audit.
SURFACE-WATER RECORDS
PERIOD OF RECORD - April 1941 to current year.
GAGE - Water-stage recorder. Elevation of gage is 4,581.36 ft, referenced to the National Geodetic Vertical Datum of 1929 (U.S. Forest Service bench mark).
REMARKS - Flow completely regulated by Painted Rocks Lake (completed in 1939) for supplementary irrigation in Bitterroot valley. Instream flow also regulated by Montana Department of Fish, Wildlife, and Parks to support aquatic, riparian, and terrestrial resources downstream from the dam.