The Spirit Lake Highway boat ramp is located in Cowlitz County, Washington, at latitude 46.29231644 and longitude -122.26592255. This boat ramp provides access to Silver Lake, which is located in the south-central part of the county. The ramp is owned by the Washington Department of Fish and Wildlife and is managed by the Cowlitz County Parks and Recreation Department.

The Spirit Lake Highway boat ramp is a concrete ramp that is suitable for powerboats, sailboats, and other watercraft. It is approximately 20 feet wide and has a gentle slope that makes it easy to launch and retrieve boats of various sizes. The ramp has a floating dock system that provides additional support to boaters as they enter and exit the water.

The Silver Lake is a popular destination for recreational boating, fishing, and swimming. It covers an area of approximately 3,000 acres and has a maximum depth of 50 feet. The lake is stocked with rainbow trout, kokanee salmon, and other fish species, making it an excellent place for anglers to try their luck. The lake also has several picnic areas, a playground, and a swimming beach for visitors to enjoy.

According to the latest information available, the Spirit Lake Highway boat ramp allows motorized boats, canoes, kayaks, and other non-motorized watercraft. However, due to changing conditions, it’s always best to check with local authorities or the Washington Department of Fish and Wildlife before launching any craft. Additionally, there may be restrictions on the use of certain types of watercraft based on the time of year or other factors.