USGS Water-Year Summary 2019
08074800 Keegans Bayou at Roark Road near Houston, TX
LOCATION - Lat 29°39'23", long 95°33'43" referenced to North American Datum of 1927, Harris County, TX, Hydrologic Unit 12040104, on right bank at upstream side of bridge on Roark Road in southwest Houston.
DRAINAGE AREA - 12.7 mi².
- WRD TX-74-1: Drainage area. WDR TX-77-2: Drainage area.
PERIOD OF RECORD - Aug. 1964 to Sept. 1981 (daily mean discharge), Oct. 1981 to Sept. 1992 (annual maximum discharge). Oct. 1992 to current year (peak discharges greater than base discharge).
PERIOD OF RECORD, Water-Quality.--
CHEMICAL DATA: Oct. 1968 to Mar. 1983.
BIOCHEMICAL DATA: Feb. 1969 to Mar. 1983.
BIOLOGICAL DATA: Dec. 1970 to Mar. 1983.
PESTICIDE DATA: Oct. 1968 to Mar. 1983.
SEDIMENT DATA: Dec. 1969 to Aug. 1971.
GAGE - Water-stage recorder. Datum of gage is NGVD of 1988, 2001 adjustment; unadjusted for land-surface subsidence. Prior to Oct. 1, 2007, datum of gage is NGVD of 1929; unadjusted for land-surface subsidence (3.305 ft above current datum). Radio telemeter at station. Satellite telemeter at station.
AVERAGE DISCHARGE FOR PERIOD OF RECORD - 17 years (water years 1965-81), 12.3 ft³/s, (8,910 acre-ft/yr).