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Aerial view of Lavon Dam and Lake
|Location||Collin County, Texas|
|Lake type||man made lake|
|Primary inflows||East Fork of the Trinity River|
|Basin countries||United States|
|Surface area||21,400 acres (87 km2)|
|Max. depth||38 ft (12 m)|
|Shore length1||83 mi (134 km)|
|1 Shore length is not a well-defined measure.|
Lavon Lake is a fresh water reservoir located in southeast Collin County, Texas on the East Fork of the Trinity River near Wylie off of State Highway 78. It is commonly called Lake Lavon for commercial and recreational purposes but Lavon Lake is its official name according to the U.S. Army Corps of Engineers. It was originally called Lavon Reservoir.
- Length: 9,540 feet (2,908 m)
- Maximum Depth: 38 ft
- Surface Area: 21,400 acres (87 km2)
- Conversion storage capacity: 275,000 acre feet (339,000,000 m3)
- Conservation Pool Elevation: 492 feet (150.0 m) msl
- Spillway level is 503.5 feet (153.5 m)
- Shoreline Length: 121 miles (195 km)
- Wildlife Management Area: 6,400 acres
- Date Impounded: September 14, 1953
- Owned by: United States Government (The North Texas Municipal Water District, the local cooperative agency, has rights to 100,000 acre feet (120,000,000 m3) of water in the conservation pool of the lake)
- Operated by: U.S. Army Corps of Engineers
- Flood control
- Water supply
- Recreation 
Started in 1948 and completed in 1953 the Lavon Dam was created to impound the upstream East Fork of the Trinity River, many of its tributaries and the areas immediately surrounding them. The reservoir was primarily designed for preventing seasonal flooding of rich bottomland in southeastern Collin County and water storage. Its construction also stimulated land development along the shores of the lake and recreational use of the water and adjacent land areas. In 1962, Congressional approval was given to modify the project to increase storage for water supply because of the growing water supply need of the area. Also part of the modification was to add recreation as a purposes for the lake. This focused management and development toward of public use, recreational activities, and stewardship of the water and land areas.
- "Lavon Lake" (PDF). United States Army Corps of Engineers. 19 Oct 2006. Retrieved 30 Mar 2013.
- "Lake Information". United States Army Corps of Engineers. 12 Feb 2008. Retrieved 29 Mar 2013.
- "North Texas Municipal Water District - Regional Service Through Unity". North Texas Municipal Water District. Retrieved 2017-11-29.
- "Lavon Lake". Texas State Historical Association. Retrieved 28 Mar 2013.
- "Lavon Lake (Trinity River Basin) Texas Water Development Board". www.twdb.texas.gov. Retrieved 4 April 2017.
- "Lake Lavon Fishing". Texas Parks and Wildlife Department. 4 Dec 2012. Retrieved 30 Mar 2013.