USGS Water-Year Summary for Site 08152000

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

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

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USGS Water-Year Summary 2023

08152000 Sandy Creek near Kingsland, TX

LOCATION - Lat 30°33'27", long 98°28'19" referenced to North American Datum of 1927, Llano County, TX, Hydrologic Unit 12090201, at right downstream end of bridge on State Highway 71, 6.6 mi upstream from mouth.

DRAINAGE AREA - 346 mi².

REVISIONS HISTORY - WDR TX-81-3: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - Oct. 1966 to Mar. 1993, Oct. 1997 to current year. PERIOD OF RECORD, Water-Quality.-- CHEMICAL DATA: Jan. 1968 to Sept. 1975, Nov. 1999 to Aug. 2001. SEDIMENT DATA: Jan. 1968 to July 1975.

GAGE -

Water-stage recorder. Satellite telemetry at station.

Datum of the gage: 861.421 ft NAVD88 based on a Level 2 Static GNSS survey processed through OPUS, Ref Frame: NAD83 (2011)(EPOCH:2010.0000) ITRF2014 (EPOCH:2024.1827) and Geoid 18. The survey was completed on March 7th, 2024 while occupying a TRM that was referenced to local gage datum via differential levels.

Prior to 3/7/2024, the Datum of the gage was 862.31 ft NGVD29.

COOPERATION - Lower Colorado River Authority provides operation and maintenance of the gage and verification of stage-discharge relation at low stages. U.S. Geological Survey maintains stage-discharge relation at medium to high stages, computes and publishes streamflow record.

REMARKS - No known regulation. There are several small diversions above station for irrigation. 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 - The flood of Sept. 11, 1952, the highest since at least 1881, reached a stage of 34.2 ft; discharge, 163,000 ft³/s, from slope-area measurement at gage site. The flood of May 29, 1995, reached a stage of 31.22 ft; discharge 107,000 ft³/s, from slope-area measurement at gage site.