USGS Water-Year Summary 2019
08077600 Clear Creek near Friendswood, TX
LOCATION - Lat 29°31'02", long 95°10'42" referenced to North American Datum of 1927, Galveston County, TX, Hydrologic Unit 12040204, on right bank at right downstream side of bridge on Farm Road 528 near Friendswood.
DRAINAGE AREA - 122 mi².
PERIOD OF RECORD - Oct. 1965 to July 1994 (annual maximum), Oct. 1997 to current year (peak discharges greater than base discharge).
PERIOD OF RECORD, Water-Quality.--
CHEMICAL DATA: Nov. 1967 to Aug. 1968.
BIOCHEMICAL DATA: Nov. 1967 to Aug. 1968.
GAGE - Water-stage recorder. Datum of gage is NAVD of 1988, 2001 adjustment. Prior to Oct. 2006, datum of gage NGVD 1929 (0.09 ft above current datum). Radio telemeter at station. Satellite telemeter at station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 16,900 ft³/s, June 9, 2001, gage height, 20.43 ft (datum then in use); maximum gage height, 20.85 ft (datum then in use), Aug. 1, 1989.