Sam Rayburn Res nr Jasper

Reservoir Levels Weather Hydrology

Sam Rayburn Reservoir is a man-made lake on the Angelina River in Texas. It was constructed in the mid-20th century for flood control, hydroelectric power generation, and water supply. The reservoir is named after Sam Rayburn, a former Speaker of the House of Representatives.

The reservoir has a storage capacity of 3,997,600 acre-feet, making it the largest lake entirely within the state of Texas. It is fed by several creeks and streams, including the Angelina River, which provides 90% of the inflow. The lake is also supplied by surface runoff and snowmelt during the winter months.

The primary agricultural use of the reservoir is for irrigation, with many farmers in the surrounding area relying on it for their crops. Additionally, the lake is a popular recreational destination, with activities such as fishing, boating, and swimming drawing visitors from across the state.

June 21, 2024







Lake Or Reservoir Water Surface Elevation Above Ngvd 1929, Ft 24hr Change 0%
Percent of Normal 104%
Minimum 146.28 ft
Maximum 175.15 ft
Average 165 ft
Dam_Height 120
Hydraulic_Height 113
Drainage_Area 3449
Year_Completed 1965
Nid_Storage 6520000
Structural_Height 130
Primary_Dam_Type Earth
Foundations Rock, Soil
Surface_Area 114500
Outlet_Gates Uncontrolled - 0
Dam_Length 12400
Hazard_Potential High
Nid_Height 130

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