The two districts received their first license from the Federal Energy Regulatory Commission (FERC) to begin the Tulloch Project.

[5] The Tri-Dam met the irrigation obligations and in the 1980s added small hydro-power plants to the dams to provide electricity.

The Tri-Dam project is composed of dams, tunnels, penstocks, powerhouses, communications systems, and offices, all stationed on the Middle Fork of the Stanislaus River.

[6] The lake provides a variety of recreation uses for visitors and residents, including boating, fishing, swimming, and camping.

[8] Also available at South Lake Tulloch RV Campground and Marina are a restaurant, general store, gas dock, and boat rentals.