Wirtz Dam

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Wirtz Dam sits on the Colorado River near Horseshoe Bay in Burnet County, Texas. It was built from 1949 to 1951 by the Lower Colorado River Authority (LCRA) to generate hydroelectric power and to create Lake Lyndon B. Johnson (Lake LBJ).

Key facts
- Operator: Lower Colorado River Authority
- Height: 118.3 feet (36.1 m)
- Length: 5,491 feet (1,674 m)
- Base width: 80 feet (24 m)
- Spillway: 10 controlled bulkhead gates, capacity 317,400 cubic feet per second
- Reservoir: Lake LBJ, surface area 6,534 acres (26.44 km2)
- Power: two turbines, total installed capacity 60 MW

Origin of names
- The dam was originally Granite Shoals Dam and was renamed Wirtz Dam in 1951 to honor Alvin J. Wirtz for his work with the LCRA.
- Lake LBJ was originally Lake Granite Shoals and was renamed in 1965 for President Lyndon B. Johnson.

Location note: It lies just west of Marble Falls, Texas.