The Detroit Lake Marina boat ramp in Oregon is a concrete boat ramp that is approximately 20 feet wide. It services Detroit Lake, which is a reservoir on the North Santiam River in the Willamette National Forest. The lake is open to a variety of watercraft, including power boats, sailboats, kayaks, and canoes. The latest information available confirms that the Detroit Lake Marina boat ramp is open to the public and is maintained by the Oregon State Parks and Recreation Department. Boaters are advised to check local regulations and safety guidelines before launching their craft. Get driving directions.