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Water-Year Summary for Site 08106350

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00060 Discharge(Mean,Max.,Min.)  
00065 Gage height(Mean,Max.,Min.)  

Water year 2022: 2021-10-01 to 2022-09-30

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USGS Water-Year Summary 2022
08106350 Little River near Rockdale, TX
LOCATION - Lat 30°45'38", long 97°00'49" referenced to North American Datum of 1927, Milam County, TX, Hydrologic Unit 12070204, on right bank downstream from Alcoa pumping station, 200 ft downstream from mouth of San Gabriel River, and 6.8 mi north of Rockdale.
DRAINAGE AREA - 6,959 mi².
PERIOD OF RECORD - Feb. 1981 to current year (daily mean discharges less than 1,000 ft³/s).

Water-stage recorder.  Satellite telemetry at station.

Datum of the Gage: 298.776 ft NAVD88 based on a Level 2 Static GNSS survey processed through OPUS, REF Frame NAD83 (2011)(EPOCH:2010.0000) ITRF2014 (EPOCH:2022.1993) and Geoid18.  The survey was completed 3/14/2022 while occupying station reference mark RM7. 

Prior to 3/14/2022 the Datum of the gage was 299.12 ft NGVD29  via a levels circuit by USGS crew in 1982 from NGS bench mark:  M 325 (BM0298). 

REMARKS - Records fair. Since installation of gage at least 10% of contributing drainage area has been regulated. There are numerous diversions for irrigation and municipal supply above station. The Aluminum Company of America diverts water from Little River to their plant reservoir. Some records listed in the "Period of Record" for surface water and water quality may not be available electronically.
EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 38.34 ft, Dec. 21, 1991 (maximum discharge not determined); minimum daily discharge 13.0 ft³/s May 9, 1984.