USGS Water-Year Summary 2021
08178700 Salado Creek at Loop 410, San Antonio, TX
LOCATION - Lat 29°30'57", long 98°25'51" referenced to North American Datum of 1927, Bexar County, TX, Hydrologic Unit 12100301, on right bank at downstream side of eastbound bridge on Interstate Highway 410 in San Antonio, 1.0 mi west of Northeast School, 1.1 mi upstream from Perrin-Beitel Creek, and 2.7 mi east of San Antonio International Airport.
DRAINAGE AREA - 137 mi².
PERIOD OF RECORD - Sept. 1960 to Dec. 2006; Feb. 2011 to current water year. Prior to Oct. 2000, published as "(Upper Station) at San Antonio".
PERIOD OF RECORD, Water-quality.--
Chemical data: Nov. 1968 to May 1999.
Biochemical data: Nov. 1968 to May 1999.
Pesticide data: Nov. 1971 to Sept. 1973.
GAGE - Water-stage recorder and Rain gage. Datum of gage is 684.60 ft above NGVD of 1929. Satellite telemeter at station.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage since at least 1853, 23 to 24 ft in Oct. 1913. Flood in Sept. 1921 reached a stage of 18 ft, and flood of Sept. 27, 1946, reached a stage of 18.2 ft.
PERIOD OF RECORD - PRECIPITATION DATA: Feb 2011 to current water year.
INSTRUMENTATION - Rainfall is registered by an unshielded, 8-in. diameter tipping bucket raingage, mounted 10 ft above the ground.