Data Disclaimer: Water level data is provided by USGS and NOAA for informational purposes only. Verify conditions on-site before any water activities.
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Thermalito Afterbay's Monument Hill Boat ramp provides access to a large reservoir located in Butte County near the town of Thermalito. This facility serves as a primary launching point for recreational boating on the Afterbay, which is a popular destination for both motorized and non-motorized watercraft. The ramp is situated in a relatively developed area with good road access from State Route 99, making it convenient for day-use visitors from the surrounding region.