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Water-Year Summary for Site 08181400

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00060 Discharge(Max.,Min.,Mean)  
00065 Gage height(Max.,Min.,Mean)  

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

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USGS Water-Year Summary 2019
08181400 Helotes Creek at Helotes, TX
LOCATION - Lat 29°34'42", long 98°41'29" referenced to North American Datum of 1927, Bexar County, TX, Hydrologic Unit 12100302, 42 ft left of and 44 ft downstream from centerline of bridge on State Highway 16, 0.1 mi northwest of Helotes, and 8.6 mi upstream from mouth.
DRAINAGE AREA - 15 mi².
REVISIONS HISTORY - WDR TX-73-1: 1972(M).
SURFACE-WATER RECORDS
PERIOD OF RECORD - June 1968 to Sept. 2004; Oct. 2005 to current year.
GAGE - Water-stage recorder. Datum of gage is 1,014.82 ft above NGVD of 1929. Satellite telemeter at station.
REMARKS - Records fair. No known regulation. An undetermined amount of flow is diverted for domestic use above station, and some streamflow enters the Edwards and associated limestones through the Balcones Fault Zone in the vicinity of the gage. No flow at times. Some records listed in the "Period of Record" for surface water and water quality may not be available electronically.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage since 1923, 13.7 ft in 1927, from information by local resident.
WATER-QUALITY RECORDS
PERIOD OF RECORD - CHEMICAL DATA: May 1969 to current year. BIOCHEMICAL DATA: May 1969 to current year. PESTICIDE DATA: May 1969 to June 1981, Oct. 1984 to current year. SEDIMENT DATA: Oct. 1968 to Sept. 1973. June 28, 2007.
REMARKS - Water-quality samples and associated discharge data are collected for selected storm events. During WY2011, no water-quality samples were collected because there were no qualifying storm events at the site.