USGS Water-Year Summary for Site 08057410

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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.)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

08057410 Trinity River below Dallas, TX

LOCATION - Lat 32°42'27", long 96°44'08" referenced to North American Datum of 1927, Dallas County, TX, Hydrologic Unit 12030105, at downstream side of bridge on South Loop Highway 12, 1.0 mi downstream from White Rock Creek, 1.5 mi upstream from Fivemile Creek, 6.4 mi southeast of Dallas County Courthouse in Dallas, and at mile 491.8.

DRAINAGE AREA - 6,278 mi².

REVISIONS HISTORY - WDR TX-94-1: 1989.

SURFACE-WATER RECORDS

PERIOD OF RECORD - Nov. 1956 to Sept. 1999, Oct. 2002 to current year.

GAGE - Water-stage recorder. Datum of gage is 365.89 ft above NGVD of 1929; 365.92 ft above NAVD of 1988. 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. Several cities within the Dallas-Fort Worth metroplex divert water for municipal use and return it to the river as wastewater effluents above this station. Low flows are sustained by wastewater effluents.

EXTREMES OUTSIDE PERIOD OF RECORD - Flood on May 25, 1908, reached a stage of 41.1 ft, from information by U.S. Army Corps of Engineers, and is the highest since that date. Floods in 1866 and 1908 reached about the same stage at Dallas.

WATER-QUALITY RECORDS

PERIOD OF RECORD - CHEMICAL DATA: Oct. 1967 to Sept. 1999, Oct. 2001 to current year. BIOCHEMICAL DATA: Oct. 1967 to Sept. 1999, Oct. 2001 to current year. BIOLOGICAL DATA: Nov. 1992 to Sept. 1997, July 2002 to July 2006. PESTICIDE DATA: Oct. 1970 to July 1981, Nov. 1992 to Sept. 1999, Oct. 2001 to current year. RADIOCHEMICAL DATA: Mar. to July 1981, Nov. 1992, Sept. 1996, Sept. 1997. SEDIMENT DATA: Apr. 1972 to Apr. 1975, Nov. 1992 to Aug. 1995, Sept. 1998 to Sept. 1999, Oct. 2001 to current year.

PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Oct. 1967 to Sept. 1992, Apr. 1993 to Sept. 1999, Feb. 2015 to Mar. 2020, Dec. 2021 to current year. pH: Jan. 1977 to Sept. 1992, Apr. 1993 to Sept. 1999, Feb. 2015 to Mar. 2020, Dec. 2021 to current year. WATER TEMPERATURE: Oct. 1967 to Sept. 1992, Apr. 1993 to Sept. 1999, Feb. 2015 to Mar. 2020, Dec. 2021 to current year. DISSOLVED OXYGEN: Jan. 1977 to Sept. 1992, Apr. 1993 to Sept. 1999, Feb. 2015 to Mar. 2020, Dec. 2021 to current year. TURBIDITY: Feb. 2015 to Mar. 2020, Dec. 2021 to current year.

REMARKS - Interruptions or periods of missing record may be due to instrument failure or data corrections exceeding allowable criteria, which were deleted. 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.

EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 35.0°C, Aug. 20, 25, 28, 31, 1972; minimum, 1.0°C, Jan. 29, 1968. SPECIFIC CONDUCTANCE: Maximum, 1,130 microsiemens/cm, Dec. 17, 1977; minimum, 112 microsiemens/cm, Oct. 20, 1984. pH: Maximum, 9.7 pH units, Aug. 22, 2022; minimum, 6.5 standard units, Jan. 1,2 4, and 5, 1997. DISSOLVED OXYGEN: Maximum, 15.3 mg/L, Apr. 19, 2022; minimum, 0.0 mg/L, on many days during spring and summer of 1977-1981. TURBIDITY: Maximum, 1190 FTU Aug. 22, 2022; minimum 1.0 FNU Sept. 12 and other days in WY19.