Folsom Dam

Folsom Dam is a concrete gravity structure with integrated power generation on the American River, rising over 100 meters and creating a large lake across Sacramento County. The facility consists of several sections with sluice gates and spillway channels that can release water rapidly during heavy rains.

Construction began in the early 1950s and was completed after five years of intensive work, with the first electricity from the turbines entering the grid shortly after completion. The facility was later expanded with additional overflow structures enabling rapid release of large volumes during extreme weather events.

The facility supplies drinking water to several communities and delivers power to surrounding districts while securing irrigation for farmland throughout the central region. Residents use the created lake for sailing and fishing, making the site an important recreation point for the wider area.

Access to the top of the structure is often available, allowing visitors to view the reservoir and valley below from the edge. Those planning to visit should note that the site covers a wide area and may involve longer walks.

The powerhouse uses Francis turbines that operate reliably even with changing water levels, enabling continuous electricity production. This technology allows the facility to adapt flexibly to rainfall variations and seasonal changes in the river.

Location: Sacramento County

Location: Folsom

Inception: 1948

Elevation above the sea: 142 m

GPS coordinates: 38.70770,-121.15700

Latest update: December 5, 2025 22:30