Merry Dam, located in Beverly, Washington, is a state-regulated structure owned and managed by the Washington Department of Ecology. Built in 1976, this dam serves primarily for recreational purposes, offering a serene spot for water enthusiasts to enjoy activities such as boating and fishing. With a hydraulic height of 10 feet and a structural height of 7 feet, Merry Dam has a storage capacity of 105 acre-feet and covers a surface area of 140 acres.

Situated on Tr-Lower Crab Creek, Merry Dam plays a crucial role in managing water resources in Grant County, Washington. Despite its low hazard potential, the dam has not been assessed for its condition in recent years. The last inspection took place in June 1998, emphasizing the need for regular monitoring and maintenance to ensure the safety and efficiency of this earth and rockfill structure. With a drainage area of 29.9 square miles, Merry Dam has a maximum discharge capacity of 219 cubic feet per second.

Enthusiasts of water resources and climate in the region can appreciate the significance of Merry Dam in providing recreational opportunities and regulating water flow in the area. As a state-managed structure with historical roots dating back to the mid-20th century, Merry Dam stands as a testament to the importance of sustainable water management practices in balancing human recreational needs with environmental preservation. With ongoing inspection and potential risk assessment measures, Merry Dam continues to play a vital role in the local ecosystem and water infrastructure of Washington State.