The Spirit Lake Outlet Tunnel, located in Kid Valley, Washington, is a crucial federal infrastructure project designed and constructed by the USDA Forest Service and the US Army Corps of Engineers. Completed in 1985, this tunnel plays a vital role in flood risk reduction along the South Coldwater Creek. With a dam height of 184 feet and a length of 1000 feet, the tunnel has a maximum storage capacity of 57,000 acre-feet, making it a key component in managing water resources in the region.
The primary purpose of the Spirit Lake Outlet Tunnel is flood risk reduction, and it features a controlled spillway with vertical lift outlet gates. Despite its high hazard potential, the tunnel's condition is currently rated as "Not Rated," and it is considered to have a very high risk level. While it lacks certain emergency preparedness measures like an Emergency Action Plan, the tunnel remains a critical piece of infrastructure in safeguarding communities and properties from potential flooding events. For water resource and climate enthusiasts, the Spirit Lake Outlet Tunnel presents a fascinating example of innovative engineering and collaboration in managing water resources and mitigating flood risks in the Pacific Northwest.
COLUMBIA RIVER GORGE NATIONAL SCENIC AREA
The Columbia River Gorge National Scenic Area is a must-visit point of interest in Oregon. Spanning over 292,500 acres, it is home to an array of natural wonders and landmarks, ...
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