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- 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
08185100 Martinez Creek near Saint Hedwig, TX
LOCATION - Lat 29°26'38", long 98°10'08" referenced to North American Datum of 1983, Bexar County, TX, Hydrologic Unit 12100304, 1.6 mi upstream from Woman Hollering Creek, 2.9 mi upstream from Cibolo Creek, and 2.8 mi northeast of St. Hedwig.
DRAINAGE AREA - 81.1 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - Nov. 2005 to current year.
GAGE - Water-stage recorder. Datum of gage is 500.109 ft above NAVD88 on 01/19/2008. Satellite telemeter at station.
REMARKS - Since installation of gage at least 10% of contributing drainage area has been regulated. Some records listed in the "Period of Record" for surface water and water quality may not be available electronically.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - Oct. 2010 to current WY.
INSTRUMENTATION - Unshielded, standard 8-in. diameter, tipping bucket raingage, mounted on top of the gage shelter 10 ft above the ground, with satellite telemeter. Datum of gage is 500.10 ft above NAVD88.
EXTREMES FOR PERIOD OF RECORD - Maximum daily rainfall was 3.21 inches on June 2, 2016.
REMARKS - Rainfall data compares well with nearby site 08185065.
WATER-QUALITY RECORDS
PERIOD OF RECORD -
CHEMICAL DATA: Dec. 2006 to Oct. 10, 2007. (discontinued).
RADIOCHEMICAL DATA: Dec. 2006 to Oct. 10, 2007. (discontinued).
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.
