USGS Water-Year Summary for Site 07345900

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	Available Parameters
	62614 Elevation, lake/res, NGVD29(Max.,Min.,Mean)

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

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USGS Water-Year Summary 2024

07345900 Lake O' The Pines near Jefferson, TX

LOCATION - Lat 32°45'18", long 94°29'57" referenced to North American Datum of 1927, Marion County, TX, Hydrologic Unit 11140305, on left bank 1,500 ft upstream from left end of Ferrell's Bridge Dam on Big Cypress Creek, on Farm Road 726, 9.0 mi west of Jefferson, and 81.5 mi upstream from mouth.

DRAINAGE AREA - 850 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD - Sept. 1957 to Sept. 2000 (U.S. Army Corps of Engineers furnished contents), Oct. 2000 to Sept. 2002 (contents), Oct. 2002 to current year. PERIOD OF RECORD, Water-Quality.-- CHEMICAL DATA: Aug. 1965 to Sept. 1977. BIOCHEMICAL DATA: Aug. 1965 to Sept. 1977.

GAGE - Water-stage recorder. Datum of gage is 0.00 ft above NGVD of 1929 and 0.08 ft below NAVD of 1988. To obtain elevations in NAVD 1988, add 0.08 ft. Prior to Nov. 12, 1957, non-recording gage at same site and 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. The lake is formed by a rolled earthfill dam 10,600 ft long, including a 200-foot-wide concrete spillway. Impoundment of water began Aug. 21, 1957, and the dam was completed June 25, 1958. Official operation began Dec. 11, 1959. The flood-control outlet works consist of two 10.0 foot- diameter conduits that are controlled by two 8.0- by 12.5-foot electrically driven broome-type gates. The low-flow outlet works consist of a controlled 14 inch pipe. Flow over the spillway is discharged into a 2,000-foot-long rectified channel and then into Cypress Creek. The lake was built for conservation, flood control, and water supply. The dam is owned by the U.S. Army Corps of Engineers. During the current year, an unknown amount of water was diverted from the lake for municipal and industrial uses. Data regarding the dam are given in the following table:

                                                                                    Elevation (feet)
Top of dam............................................................          277.0
Crest of spillway.....................................................          249.5
Top of conservation pool..............................................          228.5
Crest of intake to wet well (14 in)...................................          202.5
Lowest gated outlet (invert)..........................................          199.0

Water-quality records available from Feb. 1975 to July 2006 were published separately as:

Site ID                Site name
324518094300801  Lk O' the Pines Site AC nr Jefferson, TX
324509094303901  Lk O' the Pines Site AR nr Jefferson, TX
324613094323001  Lk O' the Pines Site BC nr Jefferson, TX
324738094325101  Lk O' the Pines Site CC nr Jefferson, TX
324806094350001  Lk O' the Pines Site DC nr Jefferson, TX
324726094363801  Lk O' the Pines Site EC nr Jefferson, TX
325100094420301  Lk O' the Pines Site FC nr Jefferson, TX

EXTREMES FOR PERIOD OF RECORD - Maximum contents, 694,360 acre-ft, May 5, 1966, elevation, 245.41 ft; minimum since Dec. 1959, 210,100 acre-ft, Oct. 6, 1984, elevation, 225.98 ft; minimum elevation, 223.11 ft*, Nov. 27, 2006. *Minimum elevation may have been lower during period of missing record.

WATER-QUALITY RECORDS

PERIOD OF RECORD - CHEMICAL DATA: Oct. 1969 to Sept. 1984, Oct. 1998 to Sept. 2004. BIOCHEMICAL DATA: Oct. 1969 to Sept. 1984, Oct. 1998 to Sept. 2004. PESTICIDE DATA: Aug. 1999 to Sept. 2004.