San Gabriel Dam

San Gabriel Dam is a rock-fill embankment that spans across the San Gabriel River and impounds water to supply the surrounding region. Two power plants operate here to generate electricity from the flowing water.

Construction started in the 1930s and reached completion within a few years as a revised design replaced the original plan. The project became important for water control in the Los Angeles region.

The dam stands within Angeles National Forest, marking a transformation point where the San Gabriel River shifts from mountain wilderness to urban water management.

The dam is accessible from Angeles National Forest and offers views of the water storage area. Visitors should be prepared for varying conditions and stay on designated paths.

Regular sediment removal operations occur at the reservoir to maintain water storage capacity following environmental events such as wildfires.

Location: Los Angeles County

GPS coordinates: 34.20560,-117.85900

Latest update: December 10, 2025 16:23