Hydropower
PG&E’s hydroelectric system is one of the largest in the country. The system provides clean, renewable energy and many of the reservoirs, dams, rivers and streams are available for swimming, fishing, and boating. Before you visit our recreational area, take a moment to learn about hydropower and water safety.
Understand the risk
How hydropower works
The movement of water rushing from a higher elevation to a lower one produces hydropower. This movement turns a turbine and creates electricity. Dams hold the water, creating reservoirs. Water moves from the reservoirs to powerhouses through waterways, such as rivers and streams. After reaching a powerhouse, the water generates electricity that is transported to the power grid.
Warning signs of danger
A hydroelectric system can have large amounts of rushing water present at any time. It is important to be cautious around facilities and recognize the warning signs of an emergency event, such as:
- Intensified sound of rushing water
- Increased water speed or depth
- Unusual amounts of debris in the water
- Change in water from clear to muddy
- Unusually cold water temperatures
During an emergency event
If you’re in the water
As soon as you become aware that a hydropower emergency has occurred, drop any items that could weigh you down, lie on your back with feet pointed up, and head downstream, moving diagonally across the current until you reach the shore.If you’re on the shore
If you’re near the water but on shore, head for higher ground as quickly as possible, whether on foot or in a vehicle. Once you’re away, tune into radio alerts for more information about the event.