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USGS Water-Year Summary 2024
12058790 NORTH FORK SKOKOMISH RIVER NEAR LOWER CUSHMAN DAM NEAR POTLATCH, WA
LOCATION - Lat 47°23'48", long 123°12'08" referenced to North American Datum of 1927, in SW 1/4 NW 1/4 sec.16, T.22 N., R.4 W., Mason County, WA, Hydrologic Unit 17110017, on right bank 1000 ft downstream from Lower Cushman Dam (Cushman Dam No.2), 2.8 mi northwest of Potlatch, and at mile 17.2. Drainage area is 97.9 sq. miles. Elevation of gage is 328 ft. above NGVD of 1929.
DRAINAGE AREA - 97.9 mi². includes drainage area upstream from Cushman Dam No. 2 which is noncontributing except during spillage.
SURFACE-WATER RECORDS
PERIOD OF RECORD - June 1988 to current year. June 1988 to September 2008, published as "12058800", "below Lower Cushman Dam".
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is 275 ft above NGVD of 1929, from topographic map. Prior to Oct. 1 2008, water-stage recorder at sites 0.7 mi downstream at different datums.
REMARKS - Upper portion of McTaggart Creek is diverted through Deer Meadow Creek into Cushman Reservoir No. 2. Flow regulated at Lake Cushman and at Cushman Reservoir No. 2 to supply powerplant, which discharges into Hood Canal. Entire flow of river normally diverted at Cushman Dam No. 2 except instream flow requirement and infrequent larger releases. U.S. Geological Survey satellite telemeter at station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 3,680 ft³/s, Dec. 19, 1995, gage height, 10.97 ft, datum then in use, from rating curve extended above 370 ft³/s; minimum discharge, 4.7 ft³/s, June 13-15, 1988.
