USGS Water-Year Summary 2020
08180586 San Geronimo Creek near Helotes, TX
LOCATION - Lat 29°37'11.02", long 98°47'42.55" referenced to North American Datum of 1983, Bexar County, TX, Hydrologic Unit 12100302, From the intersection of 1604 and HWY 16 travel north on HWY. 16 through Helotes, TX, toward Pipe Creek for 9.90 miles to San Geronimo Creek. ATurn left 50 ft. before San Geronimo Creek into driveway. at 19179 HWY 16. Gage is located on top left bank immediately upon entering driveway at first gate.
DRAINAGE AREA - 31.1 mi².
PERIOD OF RECORD - --Oct. 2012 to current year.
GAGE - --Water-stage recorder. Datum of gage 1230 feet abv NADV88.