Mossyrock Park

Mossyrock Park offers boat launch access to Riffe Lake on the Cowlitz River in Lewis County. The facility features multiple concrete ramps designed to accommodate various water levels. Be aware that lake levels fluctuate seasonally—the launch may experience significant changes in accessibility depending on water elevation, and recent improvements have extended ramp reach to accommodate lower water conditions. Contact the local utility or check current conditions before visiting, as access and ramp availability can vary substantially throughout the year.

This is a developed facility with parking available at Mossyrock Park. Paddlers and boaters should note that when water levels are low, the launch may require a longer carry to reach the water. The site serves as a primary access point for recreational use of Riffe Lake and the lower Cowlitz River system. Given the reservoir's size and managed water levels, conditions can change rapidly, so confirming current launch status is recommended before planning your trip.