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Water-Year Summary for Site 08178565

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Available Parameters
00045 Precipitation(Sum)  
00060 Discharge(Mean,Max.,Min.)  
00065 Gage height(Mean)  

Water year 2020: 2019-10-01 to 2020-09-30
 

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USGS Water-Year Summary 2020
08178565 San Antonio River at Loop 410, San Antonio, TX
LOCATION - Lat 29°19'19", long 98°27'00" referenced to North American Datum of 1927, Bexar County, TX, Hydrologic Unit 12100301, on right bank between westbound bridges on Interstate Highway 410 in San Antonio, 4.5 mi upstream from Salado Creek, and 222.3 mi upstream from mouth.
DRAINAGE AREA - 125 mi². at low-flow, flow of river comes from intermittent springflow and artesian wells.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Oct. 1986 to current year. PERIOD OF RECORD, Water-Quality.-- CHEMICAL DATA: Dec. 1986 to Aug. 2009. BIOCHEMICAL DATA: Mar. 1987 to Aug. 2009. BIOLOGICAL DATA: Dec. 1992 to Feb. 1995 PESTICIDE DATA: Dec. 1992 to Aug. 2009. RADIOCHEMICAL DATA: Dec. 2007 to Aug. 2009. PERIOD OF DAILY RECORD, Water-Quality.-- SPECIFIC CONDUCTANCE: Dec. 1986 to Aug. 1988, Mar. 1993 to Sept. 2000. pH: Dec. 1986 to Aug. 1988, Mar. 1993 to Sept. 2000. WATER TEMPERATURE: Dec. 1986 to Aug. 1988, Mar. 1993 to Sept. 2000. DISSOLVED OXYGEN: Dec. 1986 to Aug. 1988, Mar. 1993 to Sept. 2000.
GAGE - Water-stage recorder. Datum of gage is 488.11 ft above NGVD of 1929. Dec. 20, 1986 to Aug. 15, 1989, at site 0.2 mi downstream at Camino Coahuilteca crossing at same datum. Satellite telemeter at station.
REMARKS - Since installation of gage in water year 1987, at least 10% of contributing drainage area has been regulated. Some records listed in the "Period of Record" for surface water and water quality may not be available electronically.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - Nov. 2009 to current year.
INSTRUMENTATION - Unshielded, standard 8-in. diameter tipping-bucket raingage, mounted 3 ft above the gage shelter, with satellite telemetry. Datum of gage is 488.1 ft. above NGVD of 1929.
EXTREMES FOR PERIOD OF RECORD - Maximum daily rainfall was 5.25 inches on September 26, 2016.
REMARKS - Rainfall record is complete for the 2017 Water Year.