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Thermalito Afterbay (Monument Hill Boat Ramp)
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USGS2 data sourcesUpdated Mar 2026
Nearby Ramps
Thermalito Afterbay Boat Ramp
Thermalito Afterbay
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Thermalito South Forebay
Thermalito Forebay-South
Lake Oroville State Recreation Area - Thermalito Forebay
Lake Oroville
Boat Ramp on Thermalito Forebay
Thermalito Forebay
Thermalito Afterbay (Monument Hill Boat Ramp) is a public boat ramp on Thermalito Afterbay in Oroville, Butte County, California (95965). GPS coordinates: 39.4920°N, 121.6696°W.