Lake Jacksonville is a reservoir located in Cherokee County, Texas. The lake was created in 1957 by constructing a dam on Gum Creek, which is a tributary of the Neches River. The purpose of the lake was to provide water supply for the city of Jacksonville.

The hydrology of Lake Jacksonville is dependent on rainfall and runoff from the surrounding watershed. The lake has a surface area of 1,320 acres and a maximum depth of 62 feet. The lake is fed by numerous small tributaries and has a specific surface flow of 3 feet per day.

There is no snowpack in the area surrounding Lake Jacksonville, as the climate is relatively warm and mild throughout the year. However, the lake is an important source of water for agricultural purposes and is also used for recreational activities such as fishing, boating, and swimming. The lake is stocked with various species of fish, including largemouth bass, catfish, and crappie. There are also several campgrounds and picnic areas located around the lake, making it a popular destination for outdoor enthusiasts.