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USGS Water-Year Summary 2024
08197500 Frio River below Dry Frio River near Uvalde, TX
LOCATION - Lat 29°14'44", long 99°40'27" referenced to North American Datum of 1927, Uvalde County, TX, Hydrologic Unit 12110106, on right bank 1.1 mi upstream from Farm Road 1023, 5.7 mi downstream from Dry Frio River, 6.3 mi downstream from bridge on U.S. Highway 90, 7.2 mi northeast of Uvalde, and 194.5 mi upstream from mouth.
DRAINAGE AREA - 631 mi².
REVISIONS HISTORY - WDR TX-83-3: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Oct. 1953 to current year. Sum of records published as Frio River at Knippa (discontinued station 08195700) and Dry Frio River at Knippa (discontinued station 08196500) for period Sept. 1952 to Sept. 1953 is equivalent to record for this station.
GAGE - Water-stage recorder. Datum of gage is 883.015 ft above NAVD88 on 09/30/2022 previously 882.47 ft above NGVD of 1929. Satellite telemeter at station.
REMARKS - No known regulation. Part of flow of Frio River enters the Edwards and associated limestones in the Balcones Fault Zone, which crosses the basin between Frio River at Concan (station 08195000) and this station. Most of the low flow enters this formation. Many diversions for irrigation above station. Some records listed in the "Period of Record" for surface water and water quality may not be available electronically.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage since at least 1887, about 35 ft in 1894. Flood of July 1, 1932, reached a stage of about 30 ft. A higher flood than that of 1894 occurred prior to 1887, from information by local residents.
