Click
to
hide
Water-Year
Summary
instructions
and
information
- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
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.
