The dam and reservoir system on Stony Creek is one of the oldest in California built for agriculture and flood control.
East Park Dam, impounding the Little Stony Creek tributary, is a concrete thick arch dam with a capacity of 52,000 acre feet (64,000,000 m³) of water.
The dam is listed on the National Register of Historic Places.
The Rainbow Diversion Dam on Stony Creek diverts water into the East Park Feed Canal, which augments the water supply to East Park Reservoir.
Stony Gorge Dam, impounding the main stem of Stony Creek about 18 miles (29 km) downstream of East Park, has a capacity of 50,000 acre feet (62,000,000 m³).
Stony Gorge is one of only a few slab and buttress Ambursen-type dams constructed by the Bureau of Reclamation.
Both East Park and Stony Gorge are used primarily for irrigation storage, with flood control as an incidental benefit.

The earth-filled Black Butte Dam was constructed in 1963 by the U.S. Army Corps of Engineers and is the main flood control facility for lower Stony Creek.
Black Butte is not part of the Orland project, but can be used to store extra irrigation water in wet years.
Its original capacity was 160,000 acre feet (200,000,000 m³), but heavy sediment build-up had reduced this to 135,000 acre feet (167,000,000 m³) by 1997, and the reservoir continues to lose about 700 acre feet (860,000 m³) per year to sedimentation.
Downstream of Black Butte is the Orland project's Northside diversion dam, which diverts water into 17 miles (27 km) of main canals and 139 miles (224 km) of laterals, serving about 20,000 acres (8,100 ha) of fertile farmland.
The dam and reservoir system on Stony Creek is one of the oldest in California built for agriculture and flood control. East Park Dam, impounding the Little Stony Creek tributary, is a concrete thick arch dam with a capacity of 52,000 acre feet (64,000,000 m³) of water. The dam is listed on the National Register of Historic Places. The Rainbow Diversion Dam on Stony Creek diverts water into the East Park Feed Canal, which augments the water supply to East Park Reservoir. Stony Gorge Dam, impounding the main stem of Stony Creek about 18 miles (29 km) downstream of East Park, has a capacity of 50,000 acre feet (62,000,000 m³). Stony Gorge is one of only a few slab and buttress Ambursen-type dams constructed by the Bureau of Reclamation. Both East Park and Stony Gorge are used primarily for irrigation storage, with flood control as an incidental benefit.
The earth-filled Black Butte Dam was constructed in 1963 by the U.S. Army Corps of Engineers and is the main flood control facility for lower Stony Creek. Black Butte is not part of the Orland project, but can be used to store extra irrigation water in wet years. Its original capacity was 160,000 acre feet (200,000,000 m³), but heavy sediment build-up had reduced this to 135,000 acre feet (167,000,000 m³) by 1997, and the reservoir continues to lose about 700 acre feet (860,000 m³) per year to sedimentation. Downstream of Black Butte is the Orland project's Northside diversion dam, which diverts water into 17 miles (27 km) of main canals and 139 miles (224 km) of laterals, serving about 20,000 acres (8,100 ha) of fertile farmland.
Stony Creek (Sacramento River tributary)