State Water Project

The San Gabriel Valley Municipal Water District’s imported water source is the State Water Project canal, also known as the California aqueduct. Water is delivered by the State Water Project to the San Gabriel Valley. Pumps and gravity help move the water from Northern California, over the mountains, and to our basin.

Devil Canyon-Azusa Pipeline

Water coming from the State Water Project/California Aqueduct powers turbines in the Devil Canyon Power Plant near Lake Silverwood, and then enters the pipeline through the slide-gate in the foreground.

Turnouts Release Replacement Water

As replacement water flows from the State Water Project to local spreading grounds, the pressure and flow is managed or controlled at several pressure-reducing stations and "turnouts", along our pipeline.

Spreading Grounds

Spreading grounds are operated and maintained by the Los Angeles County Los Angeles County Flood Control District. Here, water percolates (or seeps slowly) from the surface of the spreading grounds downward to replenish and re-charge underground aquifers.

“Green” Energy

The District’s hydro-electric power plant in San Dimas is also located along the pipeline. Through this forward-looking initiative, “green energy,” or electricity, is generated. Built in 1985, a turbine engine is powered by water flowing in the pipeline. This 1.05 mega-watt generator produces enough electricity for over 500 homes each year. The revenue the Water District receives through energy sales helps to offset operating costs.

Water Treatment Facilities

The Water District helps its member cities by providing financial grants and loans for infrastructure projects that clean and purify their water supplies, and help them meet state and federal standards.