Northern California Sailing Information
Sailing Sites and Maps           Weather Forecasts           Current Valley Winds           Sailing Clubs           Dinghies           Sailing Safety

Thermalito Afterbay
Lake Oroville State Recreational Area

From Highway 70: Proceed on Highway 70 to Oroville. Take Highway 162 west. Turn south (left)to enter the Monument Hill day use area.

From Highyway 99: Proceed on Highway 99, turning east at its intersection with Highway 162. Cross the viaduct one mile, turning south (right) into the Monument Hill day use area.

This facility has a single boat ramp, sandy beach, bathrooms, a fish-cleaning station, and can be quite pleasant. In season, many motorboats and personal watercraft use this part of the lake. There is no user fee for this facility.

Thermalito Afterbay lake elevation
1 January to present

Maximum height is 136.5 feet and the water level is steady and reliable.

Monument Hill launch ramp

View Larger Map

View Larger Map