Based on the latest information available, the Oak Bottom River Access boat ramp is located in the Whiskeytown-Shasta-Trinity National Recreation Area in California. It is a concrete boat ramp that provides access to the Sacramento River. The ramp is approximately 20 feet wide and can accommodate small to medium-sized watercraft, including fishing boats, kayaks, canoes, and jet skis.

According to the National Park Service, the Sacramento River is designated as a recreational river, and boaters are allowed to operate motorized and non-motorized watercraft on the river. However, there are speed limits in place, and boaters are expected to follow all safety regulations and guidelines.

Overall, the Oak Bottom River Access boat ramp appears to be a well-maintained and accessible launch point for boaters looking to explore the scenic Sacramento River.