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Water-Year Summary for Site 12433200

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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.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00060 Discharge(Mean)  
00065 Gage height(Mean)  

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

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USGS Water-Year Summary 2020
LOCATION - Lat 47°51'48", long 117°51'26" referenced to North American Datum of 1927, in SE 1/4 SW 1/4 sec.02, T.27 N., R.39 E., Stevens County, WA, Hydrologic Unit 17010307, Spokane Indian Reservation, on right bank 800 ft downstream from Chamokane Falls, 1.4 mi upstream from mouth, 1.8 mi north of town of Long Lake, and at mile 1.6.
DRAINAGE AREA - 179 mi².
PERIOD OF RECORD - February 1971 to September 1978, April 1984 to September 1987 (seasonal records), October 1987 to current year. Water temperature records April 1984 to September 1987 (seasonal records); October 1987 to September 1989.
GAGE - Water-stage recorder. Elevation of gage is 1,410.00 ft above NGVD of 1929 from GPS survey. Prior to Oct. 29, 2009 at site 150 ft upstream, elevation 1,420 ft above NGVD of 1929 from topographic map.
REMARKS - No known regulation. Diversions upstream for irrigation, domestic use, and fish hatchery. Pumpage from ground-water wells can cause small fluctuations in discharge. U.S. Geological Survey satellite telemeter at site.
  • Water Years 2014 to 2017: Records good except for estimated daily discharges, which are fair.
  • Water Years 2018, 2019: Records good except for estimated discharges, which are fair.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 2,200 ft³/s, Apr. 25, 1975, gage height, 5.06 ft datum then in use, from rating curve extended above 500 ft³/s, on basis of slope-area measurement of peak flow; maximum gage height, 12.81 ft, Mar. 19, 2017, datum currently in use; minimum discharge, 9.4 ft³/s, Dec. 30, 1988.