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USGS Water-Year Summary 2024
08076700 Greens Bayou at Ley Road, Houston, TX
LOCATION - Lat 29°50'13", long 95°13'59" referenced to North American Datum of 1927, Harris County, TX, Hydrologic Unit 12040104, on right bank at downstream side of bridge on Ley Road in northeast Houston and 300 ft downstream from mouth of Halls Bayou.
DRAINAGE AREA - 182 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - Nov. 1962 to Dec. 1964, May 1971 to Sept. 1971 (discharge measurements only), Oct. 1971 to Sept. 1991, Aug. 1992 to current year (daily mean discharge, see remarks paragraph).
PERIOD OF RECORD, Water-Quality.--
CHEMICAL DATA: Dec. 1967 to May 1981.
BIOCHEMICAL DATA: Dec. 1967 to May 1981.
BIOLOGICAL DATA: Dec. 1970 to May 1981.
PESTICIDE DATA: May. 1971 to Jan. 1980.
GAGE - Water-stage recorder. Datum of gage is NAVD 1988, 2001 adjustment. Prior to Oct. 1, 2016, datum of gage 2.13 ft below NGVD of 1929, 1973 adjustment; records unadjusted for land-surface subsidence (3.54 ft below current datum). Radio telemeter at station. Satellite telemeter at station.
REMARKS - Daily mean discharge is computed for all storms that produce peak discharges above 2,000 ft³/s. Gage was discontinued on Sept. 12, 1991, for bridge construction and temporarily relocated about 1.0 mi downstream at U.S. Highway 90 to obtain stage data for the Harris County Flood Control District. Gage was moved back to Ley Road on Aug. 12, 1992, at current datum. No known regulation or diversions. Some records listed in the "Period of Record" for surface water and water quality may not be available electronically.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 69,700 ft³/s, from indirect measurement of peak flow, June 9, 2001, gage height, 44.02 ft (datum then in use), from floodmark; minimum not determined (affected by tide).
