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USGS Water-Year Summary 2024
08061000 East Fork Trinity River near Lavon, TX
LOCATION - Lat 33°01'25", long 96°28'31" referenced to North American Datum of 1927, Collin County, TX, Hydrologic Unit 12030106, on downstream side of State Highway 78 bridge, 0.70 mi downstream from Lavon Dam, 2.5 mi west of Lavon and 54.9 mi upstream from mouth.
DRAINAGE AREA - 773 mi².
REVISIONS HISTORY - WSP 1922: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Oct. 1953 to Sept. 1989, Sept. 2017 to Sept. 2018 (daily mean discharge), Oct. 2018 to present (discharge above base of 250 ft³s).
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 429.58 ft above NGVD of 1929; 429.67 ft above NAVD of 1988. From Oct. 1953 to Sept. 1969, at site 200 ft upstream above concrete control at same datum.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum stage since at least 1894, 22.3 ft in 1913 and in April 1942, from information by St. Louis Southwestern Railway Lines and local residents.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 39,000 ft³s May 26,27, 1957 from records of released flow from Lavon Lake furnished by U.S. Army Corps of Engineers; maximum gage-height, 19.55 ft June 14, 1989; no flow at times most years.
