Cook Lake in Wyoming is a federally owned reservoir located in Crook County near the town of Alva. Managed by the Forest Service, this Earth dam was completed in 1963 for the primary purpose of recreation, including fishing and wildlife viewing. With a height of 37 feet and a storage capacity of 805 acre-feet, this picturesque lake on Beaver Creek offers a serene escape for outdoor enthusiasts.

Despite its tranquil facade, Cook Lake poses a high hazard potential due to its uncontrolled spillway and the surrounding drainage area of 20 square miles. The dam, standing at 40 feet tall, has a hydraulic height of 30 feet and a structural height of 40 feet. While the condition assessment is marked as "Not Rated," regular inspections are conducted by the Forest Service to ensure the safety and integrity of the structure.

Climate and water resource enthusiasts can appreciate Cook Lake not only for its recreational opportunities but also for its role in managing water flow and storage in the region. With a moderate risk assessment score of 3, this reservoir serves as a vital resource for wildlife and a popular destination for visitors seeking a peaceful retreat in the heart of Wyoming's natural beauty.