USGS Water-Year Summary 2024
14306500 ALSEA RIVER NEAR TIDEWATER, OR
LOCATION - Lat 44°23'10", long 123°49'50" referenced to North American Datum of 1927, in NW 1/4 NW 1/4 sec.06, T.14 S., R.9 W., Lincoln County, OR, Hydrologic Unit 17100205, on right bank, 0.9 mi downstream from Grass Creek, 2.5 mi upstream from Scott Creek, 3.8 mi southeast of Tidewater and at mile 21.0.
DRAINAGE AREA - 334 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1939 to current year.
GAGE - Water-stage recorder. Datum of gage is 48.16 ft above NGVD of 1929. Prior to Nov. 16, 1939, nonrecording gage at present site and datum.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood on or about Feb. 3, 1890, reached a stage of 29.5 ft, from floodmark (discharge not determined).
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 41,800 ft³/s Dec. 22, 1964, gage height, 27.44 ft; minimum discharge, 45 ft³/s Sept. 26, 27, 1965.