Summary
According to the Washington Department of Fish and Wildlife, the ramp is 21 feet wide, with a maximum launch grade of 10%.
The boat ramp services the Mayfield Lake, a 2,200-acre reservoir located in southern Lewis County. The lake is used for boating, fishing, and swimming.
The Washington Department of Fish and Wildlife reports that the Kosmos Road West boat ramp is suitable for launching small to medium-sized watercraft, including powerboats, canoes, kayaks, and sailboats. However, it is important to note that there may be seasonal restrictions or closures due to weather or maintenance, so it is always advisable to check the latest information before attempting to launch a boat.
Kosmos Road West Lewis County
Weather Forecast
Area Streamflow Levels
| COWLITZ RIVER NEAR KOSMOS | 3560cfs |
| COWLITZ RIVER AT RANDLE | 1610cfs |
| TILTON RIVER AB BEAR CANYON CREEK NEAR CINEBAR | 785cfs |
| MINERAL CREEK NEAR MINERAL | 360cfs |
| CISPUS RIVER AB YELLOWJACKET CREEK NEAR RANDLE | 716cfs |
| NISQUALLY RIVER NEAR NATIONAL | 798cfs |
River Runs
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Goat Rocks Wilderness Bounday To Cowlitz Falls Ferc Project Boundary In Ne1/4 Of Nw1/4 Of Sec 4, T11N, R6E
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Mount St. Helens National Volcanic Monument Boundary To Mount St. Helens National Volcanic Boundary In Sw 1/4 Of Sec 32, T11N, R5E
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Mount St. Helens National Volcanic Monument Boundary To To Point River Reenters Mshnvm In Se 1/4 Of Sec 11, T10N, R5E