USGS Water-Year Summary for Site 08158810

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	Available Parameters
	00060 Discharge(Max.,Min.,Mean)
	00065 Gage height(Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

08158810 Bear Creek below Farm to Market Road 1826 near Driftwood, TX

LOCATION - Lat 30°09'19", long 97°56'23" referenced to North American Datum of 1927, Hays County, TX, Hydrologic Unit 12090205, on left bank, 0.8 mi southeast of Farm Road 1826 and 5.9 mi northeast of Driftwood.

DRAINAGE AREA - 12.2 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD - Mar. 1978 to Sept. 1978 (periodic discharge measurements only), Oct. 1978 to June 1979 (peak discharges greater than base discharge), July 1979 to current year.

GAGE -

Water-stage recorder. Satellite telemetry at station.

Datum of the gage is 859.91 ft. NAVD88 based on a Level 2 Static GNSS survey processed through OPUS with Ref Frame NAD83 (2011)(EPOCH:2010.0000) ITRF2014 (EPOCH:2020.6112) and Geoid 18. The survey was completed 08/11/2020 over a TRM that was tied to local datum via differential levels.

The prior datum of the gage was 860 ft NGVD29 (from topographic map).

REMARKS - Records fair. No known regulation or diversions. 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 - Flood of June 9, 1939, reached a stage of 16.2 ft, discharge, 14,200 ft³/s, and is the highest since at least 1924, from information by local resident. A flood in 1915 was reported to be 2.0 ft higher than the 1939 flood, from information by local resident.

WATER-QUALITY RECORDS

PERIOD OF RECORD - CHEMICAL DATA: Mar. 1978 to June 1997, Mar. 2000 to Oct. 2002, May 2004 to Oct. 2004, Mar. 2006 to current year. BIOCHEMICAL DATA: Mar. 1978 to June 1997, June 2002 to Oct. 2002, May 2004 to Oct. 2004, Mar. 2006 to current year. BIOLOGICAL DATA: Mar. 1978 to June 1997, Feb. 2009 to Mar. 2010. RADIOCHEMICAL DATA: Jan. 1980 to June 1981. STABLE ISOTOPES DATA: Mar. 2009 to Feb. 2010. PESTICIDE DATA: June 1978 to Feb. 1983, Jan. 1993, July 2007 to Feb. 2010. ORGANICS, OTHER DATA: Mar. 2009 to Feb. 2010. SEDIMENT DATA: June 2002 to Oct. 2002, May 2004, Mar. 2006 to June 2010.