Cedar Lake Dam, also known as Marney Lake Dam, is a privately owned structure located in Usk, Washington. Built in 1967 by the USDA NRCS, this earth dam stands at a height of 19 feet with a structural height of 23 feet, serving primarily for irrigation purposes. With a storage capacity of 50 acre-feet and a normal storage of 21 acre-feet, Cedar Lake Dam is situated on TR-Deer Creek in Pend Oreille County. The dam has a hazard potential classified as high, but its condition assessment is rated as fair as of the last inspection in September 2015.

Managed by the Washington Department of Ecology, Cedar Lake Dam is subject to state regulation, inspection, and enforcement. While its primary purpose is irrigation, the dam also provides opportunities for recreational activities. With a drainage area of 0.32 square miles and a maximum discharge capacity of 355 cubic feet per second, Cedar Lake Dam plays a crucial role in water resource management in the region. Despite its age, the dam continues to be a vital infrastructure for the local community and surrounding areas, contributing to the sustainable use of water resources and climate resilience efforts.

In the event of emergencies, the dam's emergency action plan status and risk management measures remain unspecified in the available data. However, the structure's compliance with state guidelines and preparedness for potential inundation events are crucial aspects that need to be regularly reviewed and updated. As water resource and climate enthusiasts, understanding the significance of Cedar Lake Dam in sustaining irrigation and recreation activities, as well as the need for ongoing maintenance and risk mitigation strategies, is essential for ensuring the long-term safety and functionality of this vital infrastructure.