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USGS Water-Year Summary 2024
08212400 Los Olmos Creek near Falfurias, TX
LOCATION - Lat 27°15'51", long 98°08'08" referenced to North American Datum of 1927, Brooks County, TX, Hydrologic Unit 12110205, at downstream side of bridge (left bank) on U.S. Highway 281 and 2.6 mi north of Falfurrias.
DRAINAGE AREA - 480 mi² of which 4 mi² probably is noncontributing.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Jan. 1967 to Sept. 1983, Mar. 1999 to current year.
PERIOD OF RECORD, Water-Quality.--
CHEMICAL DATA: Sept. 1967 to Oct. 1981.
BIOCHEMICAL DATA: Sept. 1967 to July 1981.
BIOLOGICAL DATA: Oct. 1974 to July 1981.
PESTICIDE DATA: Apr. 1979.
RADIOCHEMICAL DATA: June 1981 to July 1981.
SEDIMENT DATA: Oct. 1974 to June 1981.
GAGE - Water-stage recorder. Datum of gage is 116.58 ft above NGVD of 1929. Datum of gage is 114.475 ft. above NAVD88. Satellite telemeter at station.
REMARKS - Records rated fair. No known regulation or diversions. Some records listed in the "Period of Record" for surface water and water quality may not be available electronically. For additional information see RMS Period Analysis notes.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage since at least 1929, 15.0 ft, Sept. 13, 1951, from information by Texas Department of Transportation.
