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Water-Year Summary for Site 08049500

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
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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.,Mean)  
63680 Turbidity, Form Neph(Max.,Mean,Min.)  

Water year 2021: 2020-10-01 to 2021-09-30

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USGS Water-Year Summary 2021
08049500 West Fork Trinity River at Grand Prairie, TX
LOCATION - Lat 32°45'45", long 96°59'40" referenced to North American Datum of 1983, Dallas County, TX, Hydrologic Unit 12030102, on downstream side of Belt Line Road bridge, 1.3 mi northeast of Grand Prairie, 3.7 mi upstream from Mountain Creek, and at mile 514.6.
DRAINAGE AREA - 3,065 mi².
REVISIONS HISTORY - WSP 628: 1925. WSP 1922: Drainage area.
PERIOD OF RECORD - Mar. 1925 to current year. PERIOD OF DAILY RECORD, Atmospheric.-- PRECIPITATION DATA: Oct. 2001 to Sept. 2002.
GAGE - Water-stage recorder. Datum of gage is 405.30 ft above NAVD of 1988. Prior to Dec. 6, 1933, non-recording gage at bridge on old channel 2,500 ft southeast of Belt Line Rd site at datum 7.56 ft higher. Dec. 6, 1933, to May 24, 1956, water-stage recorder at site 440 ft downstream from site of non-recording gage at datum 7.56 ft higher than present datum. May 25, 1956, to Apr. 18, 1957, non-recording gage at site 1.5 mi downstream at different datum. Apr. 19 to Aug. 13, 1957, non-recording gage at datum 5.00 ft higher than present datum. Aug. 14, 1957 to Sept. 30, 1982, water-stage recorder at datum 5.00 ft higher than present datum. Oct. 1, 1982 to Apr. 5, 2003, water-stage recorder at present datum. Apr. 6, 2003 to Sept. 30, 2006, water-stage recorder at site 3.5 mi upstream (Roy Orr Blvd.) at same datum. Satellite telemeter at station.
REMARKS - Some records listed in the "Period of Record" for surface water and water quality may not be available electronically. Since installation of gage, at least 10% of contributing drainage area has been regulated. The City of Fort Worth discharges waste-water effluent into the river upstream from this station. There are many diversions upstream from station for municipal, industrial, and other uses.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage since at least 1900, 30.6 ft in May 1908 (former site and datum), from information by local resident. Flood in Apr. 1922 reached a stage of 29.0 ft (former site and datum), from floodmarks.
PERIOD OF RECORD - CHEMICAL DATA: Jan. 1964 to current year. BIOCHEMICAL DATA: Jan. 1968 to current year.
PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Oct. 1966 to Sept. 1992, Aug. 1993 to Apr. 2003, June 2003 to current year. pH: Oct. 1976 to Sept. 1992, Aug. 1993 to Apr. 2003, June 2003 to current year. WATER TEMPERATURE: Oct. 1966 to Sept. 1992, Aug. 1993 to Apr. 2003, June 2003 to current year. DISSOLVED OXYGEN: Oct. 1976 to Sept. 1992, Aug. 1993 to Apr. 2003, June 2003 to current year.
INSTRUMENTATION - Water-quality monitor since Nov. 1976.
REMARKS - Records for 2014 water year temperature, specific conductance, and pH records excellent. Dissolved oxygen record fair. 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. Mean monthly and annual concentrations and loads for selected chemical constituents have been computed for previous years using the daily records of specific conductance and a regression relation between each chemical constituent and specific conductance. Regression equations developed for this station may be obtained from the U.S. Geological Survey Texas Water Science Center; Austin, Texas upon request.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 35.0°C, Aug. 8, 1982; minimum, 3.0°C, Jan. 9, 1973. SPECIFIC CONDUCTANCE: Maximum, 1,320 microsiemens/cm, Dec. 12, 1978; minimum, 108 microsiemens/cm, May 1, 1986. pH: Maximum, 9.8 standard units, on several days during period of record in WY 2018; minimum, 6.6 standard units, Jan. 6, 1979. DISSOLVED OXYGEN: Maximum, 15.9 mg/L, Feb. 27, 2002; minimum, 0.0 mg/L, on several days during period of record. TURBIDITY: Maximum, 1470 NTU, Feb. 26, 2021, Minimum, 1.5 NTU, Sept. 07, 2015