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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
08103900 South Fork Rocky Creek near Briggs, TX
LOCATION - Lat 30°54'41", long 98°02'12" referenced to North American Datum of 1927, Burnet County, TX, Hydrologic Unit 12070203, on right bank at upstream side of bridge on Ranch Road 963, 6.0 mi above confluence with North Fork Rocky Creek, 7.0 mi west of Briggs, and 12.9 mi above mouth of Rocky Creek.
DRAINAGE AREA - 33.3 mi².
REVISIONS HISTORY - WRD TX-74-1: 1972-73(P). WDR TX-76-2: Drainage area. WRD TX-2007: Maximum peak discharges, 1965 and 1968.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Apr. 1963 to current year.
PERIOD OF RECORD, Water-Quality.--
CHEMICAL DATA: Oct. 1961 to Jan. 1964, Jan. 1968 to Aug. 1996.
BIOCHEMICAL DATA: May 1964 to Jan. 1964, Jan. 1968 to Aug. 1996.
BIOLOGICAL DATA: Jan. 1968 to Aug. 1996.
PESTICIDE DATA: July 1971 to July 1982.
RADIOCHEMICAL DATA: Jan. 1968 to Aug. 1996.
SEDIMENT DATA: May 1963 to June 1963, Oct. 1965 to Aug. 1996.
GAGE -
Water-stage recorder. Satellite telemetry at station.
Datum of the gage is 956.91 ft NAVD88 based on a Level 2 Static GNSS survey processed through OPUS with Ref Frame NAD83 (2011)(EPOCH:2010.0000) ITRF2014 (EPOCH:2020.4253) and Geoid 18. The survey was completed on 06/04/2020 over a TRM tied into local datum via levels.
The prior datum of the gage was 955.8 ft NGVD29 obtained through differential levels.
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.
