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Water-Year Summary for Site 08446500

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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
00010 Temperature, water(Max.,Min.,Mean)  
00060 Discharge(Max.,Min.,Mean)  
00065 Gage height(Max.,Min.,Mean)  
00095 Specific cond at 25C(Max.,Min.,Mean)  
00300 Dissolved oxygen(Max.,Min.,Mean)  
00400 pH(Max.,Min.,Med.)  

Water year 2019: 2018-10-01 to 2019-09-30
 

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USGS Water-Year Summary 2019
08446500 Pecos River near Girvin, TX
LOCATION - Lat 31°06'47", long 102°25'02" referenced to North American Datum of 1927, Pecos County, TX, Hydrologic Unit 13070001, on right bank 2.1 mi upstream from Comanche Creek, 3.8 mi northwest of Girvin, and 7.2 mi upstream from bridge on U.S. Highway 67.
DRAINAGE AREA - 37,300 mi² of which 7,740 mi² probably is noncontributing. which is contributing area of supplementary gage 7.2 mi downstream.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Aug. 1939 to current year. PERIOD OF RECORD, Water-Quality.-- CHEMICAL DATA: Oct. 1939 to June 1941, Oct. 1946 to Sept. 1947, Oct. 1953 to Aug. 1982. PESTICIDE DATA: May 1968 to July 1974. PERIOD OF DAILY RECORD, Water-Quality.-- SPECIFIC CONDUCTANCE: Oct. 1939 to June 1941, Oct. 1946 to Sept. 1947, Oct. 1953 to Sept. 1982. WATER TEMPERATURE: Oct. 1953 to Jan. 1959, Mar. 1964 to Sept. 1982.
GAGE - Water-stage recorder with concrete control and measuring flume. Elevation of gage is 2,290 ft above NGVD of 1929, from topographic map. Supplementary water-stage recorder, 7.2 mi downstream at datum 2,269.65 ft above NGVD of 1929, used as regular gage prior to July 17, 1951, then used only for peaks exceeding about 750 ft³/s, and was removed in the 2014 Water Year.
COOPERATION - Texas Commission on Environmental Quality (TCEQ) & the USGS Ground and Streamflow Information Program (GWSIP)
REMARKS - Since installation of gage at least 10% of contributing drainage area has been regulated. There are numerous diversions upstream of station for irrigation. 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 of Sept. 1932 reached a stage of 17 feet, discharge not determined; information supplied by local residents.
WATER-QUALITY RECORDS
PERIOD OF RECORD - CHEMICAL DATA: Jan. 1960 to Sept. 1964, Oct. 1967 to Aug. 1982. BIOCHEMICAL DATA: Mar. 1964, Apr. 1969 to Aug. 1981. PESTICIDE DATA: May 1968 to July 1974. PCB DATA: Mar. 1973 to July 1974. RADIOCHEMICAL DATA: Jan. 1981 to Aug. 1981
PERIOD OF DAILY RECORD -

WATER TEMPERATURE: Sept. 2011 to Nov. 2016, Nov. 2017 to current year.

SPECIFIC CONDUCTANCE: Sept. 2011 to Nov. 2016, Nov. 2017 to current year.

pH: Sept. 2011 to Aug 2015; July 2016 to Nov. 2016.

DISSOLVED OXYGEN: Sept. 2011 to Nov. 2016, Nov. 2017 to current year.

COOPERATION - Texas Commission on Environmental Quality.
INSTRUMENTATION -

A four parameter continuous water-quality monitoring sonde since Sept. 2011 -November 2017.

A three parameter continuous water-quality monitoring sonde since November 2017.

REMARKS - Interruptions or periods of missing record may be due to instrument failure, no flow conditions or data corrections exceeding allowable criteria, which were deleted. Other than no flow conditions, minimum and maximum extremes may have occurred during period of missing record. Some records listed in the "Period of Record" may not be available electronically.