USGS Water-Year Summary for Site 07344500

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

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

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USGS Water-Year Summary 2023

07344500 Big Cypress Creek near Pittsburg, TX

LOCATION - Lat 33°01'15", long 94°52'55" referenced to North American Datum of 1927, Titus County, TX, Hydrologic Unit 11140305, at downstream side of bridge on State Highway 11, 0.5 mi upstream from Louisiana & Arkansas Railway Co. bridge, 1.4 mi upstream from Williamson Creek, 5.2 mi east of Pittsburg, 9.0 mi downstream from Lake Bob Sandlin, and 110.0 mi upstream from mouth.

DRAINAGE AREA - 370 mi².

REVISIONS HISTORY - WSP 1211: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - Apr. 1943 to Dec. 1962, published as "Cypress Creek near Pittsburg" (daily mean discharge), Oct. 1967 to Sept. 1989 (daily mean discharge), Oct. 1989 to Sept. 2010 (peak discharges greater than base discharge), Oct. 2010 to current year (daily mean discharge). Gage-height records collected at this site from Sept. 1963 to Dec. 1967, are published in reports by the U.S. Army Corps of Engineers. PERIOD OF RECORD, Water-Quality.-- CHEMICAL DATA: Mar. 1965 to Aug. 1989, Feb. 1999 to Aug. 2006. BIOCHEMICAL DATA: Nov. 1982 to Aug. 1985, Feb. 1999 to Aug. 2004. RADIOCHEMICAL DATA: Apr. 1973, Mar. to June 1981, Feb. 1999 to Aug. 2004. SEDIMENT DATA: Aug. 2006. PERIOD OF DAILY RECORD, Water-Quality.-- SPECIFIC CONDUCTANCE: Oct. 1968 to Sept. 1989. WATER TEMPERATURE: Oct. 1968 to Sept. 1989.

GAGE - Water-stage recorder. Datum of gage is 247.49 ft above NGVD of 1929; 247.44 ft above NAVD of 1988. Prior to Nov. 12, 1954, water-stage recorder at site 1,900 ft downstream at present 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 July 1970, at least 10% of contributing drainage area has been regulated. Waste-water effluent was returned to a tributary above this station by the City of Mount Pleasant, and waste-water effluent was returned to a tributary below this station by the City of Pittsburg. No known diversions.

EXTREMES OUTSIDE PERIOD OF RECORD - Flood in Jan. 1938 reached a stage of about 25 ft from information by local resident. Maximum stage since at least 1895, that of Mar. 30, 1945.

EXTREMES FOR PERIOD PRIOR TO REGULATION - WATER YEARS 1944-1962, 1968-1970: Maximum discharge, 58,500 ft³/s Mar. 30, 1945, gage height, 28.3 ft, from floodmark, and adjusted to present site on basis of record for flood of Apr. 27, 1958, from rating curve extended above 20,000 ft³/s; no flow Aug. 20 to Oct. 3, 1954, July 19 to Nov. 4, 1956.

AVERAGE DISCHARGE FOR PERIOD PRIOR TO REGULATION - 22 years (water years 1944-1962, 1968-1970), prior to regulation by Lake Cypress Springs, 349 ft³/s, 253,000 acre-ft/ yr.

WATER-QUALITY RECORDS

PERIOD OF RECORD - CHEMICAL DATA: Mar. 1965 to Aug. 1989, Oct. 1998 to Sept. 2004. BIOCHEMICAL DATA: Jan. 1983 to Sept. 1985, Oct. 1998 to Sept. 2004.