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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
08188570 San Antonio River near McFaddin, TX
LOCATION - Lat 28°31'52.5", long 97°02'33.7" referenced to North American Datum of 1983, Refugio County, TX, Hydrologic Unit 12100303, on right bank at downstream side of bridge on U.S. Hwy 77, 3.2 mi southwest of McFaddin, and at mile 13.9.
DRAINAGE AREA - 4,134 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - Nov. 2005 to current year.
PERIOD OF RECORD, Water-Quality.--
CHEMICAL DATA: Dec. 2006 to Oct. 2007.
RADIOCHEMICAL DATA: Dec. 2006 to Oct. 2007.
GAGE - Water-stage recorder. Datum of gage is 6.52 ft above NGVD of 1929. Satellite telemeter at station.
REMARKS - No known regulation. There are many diversions above station, but amounts are unknown. 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, 20,600 ft³/s Aug. 25, 2007 (gage height, 33.58 ft), minimum discharge, 92 ft³/s Oct. 5, 2011.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - PRECIPITATION DATA: Oct. 2011 to Current.
INSTRUMENTATION - Rainfall is registered by a standard, unshielded, 8-in. diameter tipping-bucket raingage, mounted 3 ft above the gage shelter, with satellite telemetry. Datum of gage is 6.52 ft. above NGVD of 1929.
WATER-QUALITY RECORDS
PERIOD OF RECORD - CHEMICAL DATA: Dec. 2006 to Oct. 2007.
RADIOCHEMICAL DATA: Dec. 2006 to Oct. 2007.
REMARKS - Water-quality data collected at this location are associated with Investigations Project: Surface Water - Ground Water Interaction in the Lower San Antonio River Watershed. Water-quality data collection began in Water Year 2007 and was discontinued in Water Year 2008, as noted above in the Period of Record.
