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The Winlock Waterski Pond Dam in Lewis County, Washington, is a privately owned earth dam completed in 1990 primarily for recreational purposes.
Situated offstream from Tr-Coon Creek, the dam has a hydraulic height of 11 feet and a structural height of 11 feet, with a total length of 2000 feet. The dam has a normal storage capacity of 50 acre-feet, with a maximum storage of 80 acre-feet and a surface area of 13 acres.
Despite being classified as having low hazard potential, the Winlock Waterski Pond Dam is regulated and inspected by the Washington Department of Ecology. The dam is located in Congressional District 03 and is overseen by Representative Jaime Herrera Beutler. While it has not been rated for condition assessment, the dam lacks an emergency action plan and inundation maps, highlighting potential areas for improvement in risk management and emergency preparedness. Water resource and climate enthusiasts interested in recreational dams and their regulatory oversight will find the Winlock Waterski Pond Dam an intriguing case study.
Year Completed |
1990 |
Dam Length |
2000 |
River Or Stream |
Tr-Coon Creek-Offstream |
Primary Dam Type |
Earth |
Surface Area |
13 |
Hydraulic Height |
11 |
Drainage Area |
2 |
Nid Storage |
80 |
Structural Height |
11 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
11 |
| Location | Reservations | Toilets |
|---|---|---|
Yurt Village
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Seaquest State Park Campground
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Seaquest State Park
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Stan Hedwall Park
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Kid Valley Campground
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Mayfield Lake - Tacoma Power
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Headwaters In Sw1/4 Sec 28, T9N, R5E To Mount St. Helens National Volcanic Monument Boundary
Mount St. Helens National Volcanic Monument Boundary To Mount St. Helens National Volcanic Boundary In Sw 1/4 Of Sec 32, T11N, R5E
Mount St. Helens National Volcanic Monument Boundary To To Point River Reenters Mshnvm In Se 1/4 Of Sec 11, T10N, R5E
Goat Rocks Wilderness Bounday To Cowlitz Falls Ferc Project Boundary In Ne1/4 Of Nw1/4 Of Sec 4, T11N, R6E
Headwaters In Se1/4 Of Sec 31, T10N, R6E To Mount St. Helens National Volcanic Monument Boundary
(Upper Muddy Segment) Headwaters In Se1/4 Of Sec 10, T8N, R5E To Conflence With Smith Creek