USGS Water-Year Summary for Site 08171000

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

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Water year 2024: 2024-10-01 to 2025-09-30

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USGS Water-Year Summary 2024

08171000 Blanco River at Wimberley, TX

LOCATION - Lat 29°59'39", long 98°05'19" referenced to North American Datum of 1927, Hays County, TX, Hydrologic Unit 12100203, on left bank at downstream side of highway, near left end of bridge on Ranch Road 12, 0.3 mi southeast of Wimberley, 2,200 ft downstream from Cypress Creek, and at mile 29.0.

DRAINAGE AREA - 355 mi².

REVISIONS HISTORY - WSP 1562: 1929, 1930-31(M), 1935-36(M), 1938(M), 1941-42(M), 1947(M), 1949(M). WSP 2123: Drainage area, WDR TX-2005: 1972(M).

SURFACE-WATER RECORDS

PERIOD OF RECORD - Aug. 1924 to Sept. 1926 (mean discharge and total run-off estimated from Oct. 1, 1925 to Feb. 28, 1926 and July 1, 1926 to Sept. 30, 1926), June 1928 to current year. PERIOD OF RECORD, Water-Quality.-- CHEMICAL DATA: Apr. 1962 to Nov. 1966, Mar. 1970, Mar. 1973 to Aug. 1979, Feb. 1988 to Aug. 1993, Oct. 1995 to June 1998. BIOCHEMICAL DATA: Apr. 1962 to Nov. 1966, Mar. 1970, Mar. 1973 to Aug. 1979, Feb. 1988 to Aug. 1993, Oct. 1995 to June 1998. BIOLOGICAL DATA: Mar. 1970 to Mar. 1973, Aug. 1979, Feb. 1988 to Aug. 1993, Aug. 1995 to June 1998. PESTICIDE DATA: Mar. 1970 to Mar. 1973, Aug. 1979, Feb. 1988 to Aug. 1993, Aug. 1995 to June 1998. SEDIMENT CHEMISTRY DATA: Aug. 1995. SEDIMENT DATA: Apr. 1996 to June 1998. RADIOCHEMICAL DATA: Feb. 1998. PERIOD OF DAILY RECORD, Water-Quality.-- SPECIFIC CONDUCTANCE: Jan. 1997 to Sept. 1998. pH: Jan. 1997 to Sept. 1998. WATER TEMPERATURE: Jan. 1997 to Sept. 1998. DISSOLVED OXYGEN: Jan. 1997 to Sept. 1998.

GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 797.23 ft above NGVD of 1929. Aug. 6, 1924 to Sept. 30, 1926, nonrecording gage at site 1,030 ft upstream at datum 5.00 ft higher. Recording gage from June 6, 1928 to June 12, 1975, at site 1,000 ft upstream at datum 5.00 ft higher. Satellite telemeter at station.

REMARKS - Records fair for Water Year. No known regulation. There are many small diversions 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 - Flood in July 1869 reached a stage of 25 ft, from information by local residents. Maximum stage since at least 1869, that of May 28, 1929.

WATER-QUALITY RECORDS

PERIOD OF RECORD - CHEMICAL DATA: Apr. 1962 to Nov. 1966; Mar. 1970; Mar. 1973 to Aug. 1979; Feb. 1988 to Aug. 1993; Oct. 1995 to June 1998. BIOCHEMICAL DATA: Apr. 1962 to Nov. 1966; Mar. 1970; Mar. 1973 to Aug. 1979; Feb. 1988 to Aug. 1993; Oct. 1995 to June 1998. BIOLOGICAL DATA: Mar. 1970 to Mar. 1973; Aug. 1979; Feb. 1988 to Aug. 1993; Aug. 1995 to June 1998. PESTICIDE DATA: Mar. 1970 to Mar. 1973; Aug. 1979; Feb. 1988 to Aug. 1993; Aug. 1995 to June 1998. SEDIMENT CHEMISTRY DATA: Aug. 1995. SEDIMENT DATA: Apr. 1996 to June 1998. RADIOCHEMICAL DATA: Feb. 1998.

PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Jan. 1997 to Sept. 1998. WATER TEMPERATURE: Jan. 1997 to Sept. 1998. pH: Jan. 1997 to Sept. 1998. DISSOLVED OXYGEN: Jan. 1997 to Sept. 1998.