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USGS Water-Year Summary 2024
14307620 SIUSLAW RIVER NEAR MAPLETON, OR
LOCATION - Lat 44°03'45", long 123°52'55" referenced to North American Datum of 1927, in SW 1/4 NW 1/4 sec.27, T.17 S., R.10 W., Lane County, OR, Hydrologic Unit 17100206, on right bank, 250 ft upstream from Shoemaker Creek, 2.5 mi northwest of Mapleton and at mile 23.7.
DRAINAGE AREA - 588 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1967 to September 1994, February 1998 to September 2001 (gage heights only), October 2001 to current year.
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is 41 ft above NGVD of 1929, from topographic map.
REMARKS - No regulation or diversion upstream from station. Continuous water-quality records, chemical analyses, and suspended sediment data for some prior periods have been collected at this location.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of December 1964 reached a stage of about 28 ft, from information by local residents, discharge not determined. Flood of Feb. 7, 1996, reached a stage of 30.21 ft, from floodmark, discharge, 54,800 ft³/s, from rating curve extended above 40,000 ft³/s.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 49,400 ft³/s Jan. 21, 1972, gage height, 28.45 ft; minimum discharge, 44 ft³/s Aug. 27, 28, 2015.
