Trinity Dam is an earth and rock-filled dam composed mainly of river gravel and local rock, rising 538 ft (164 m) from its foundations and 440 ft (130 m) above the riverbed.
The dam's crest is 2,450 ft (750 m) long and 2,395 ft (730 m) above sea level.
High water releases are controlled by three different sets of gates.
The outlet works have a capacity of 24,000 cu ft/s (680 m³/s), and the service spillway, a morning-glory (bell-mouth) design, can take 22,400 cu ft/s (630 m³/s) of water.
The dam's auxiliary spillway has a capacity of 2,250 cu ft/s (64 m³/s).

Trinity Lake can hold up to 2,447,650 acre feet (3,019,130 dam³) at full pool, and encompasses up to 17,722 acres (7,172 ha) of water.
Trinity Powerplant, located at the base of the dam, has two Francis turbines with a capacity of 140 megawatts (MW) combined, uprated from an original capacity of 100 MW.
The plant generates an average of 358.97 million kilowatt hours (kWh) and has a low capacity factor, which means it operates mainly on a peaking basis.
Trinity Dam is an earth and rock-filled dam composed mainly of river gravel and local rock, rising 538 ft (164 m) from its foundations and 440 ft (130 m) above the riverbed. The dam's crest is 2,450 ft (750 m) long and 2,395 ft (730 m) above sea level. High water releases are controlled by three different sets of gates. The outlet works have a capacity of 24,000 cu ft/s (680 m³/s), and the service spillway, a morning-glory (bell-mouth) design, can take 22,400 cu ft/s (630 m³/s) of water. The dam's auxiliary spillway has a capacity of 2,250 cu ft/s (64 m³/s).
Trinity Lake can hold up to 2,447,650 acre feet (3,019,130 dam³) at full pool, and encompasses up to 17,722 acres (7,172 ha) of water. Trinity Powerplant, located at the base of the dam, has two Francis turbines with a capacity of 140 megawatts (MW) combined, uprated from an original capacity of 100 MW. The plant generates an average of 358.97 million kilowatt hours (kWh) and has a low capacity factor, which means it operates mainly on a peaking basis.
Trinity Dam