Located in Mason, Washington, Timberlakes Dam stands as a private recreational structure along Tr-Campbell Creek. Built in 1968, this earth dam serves as a popular spot for outdoor enthusiasts seeking activities like fishing, boating, and hiking in the surrounding area. With a maximum storage capacity of 904 acre-feet and a normal storage level of 828 acre-feet, the dam covers a surface area of 15.2 acres and has a drainage area of 2.15 square miles.

Standing at a hydraulic height of 29 feet and a structural height of 27 feet, Timberlakes Dam has a length of 205 feet and a maximum discharge capacity of 404 cfs. Despite its high hazard potential, the dam is currently deemed to be in satisfactory condition as of the last assessment in May 2018. The dam is regulated by the Washington Department of Ecology, with inspections conducted every 5 years to ensure its safety and compliance with state regulations. In case of emergencies, an Emergency Action Plan (EAP) is in place, although details on its preparation and guidelines adherence are not specified in the data provided.

Representing a vital water resource and climate asset in the region, Timberlakes Dam serves as a key recreational hub with its serene surroundings and abundant water-based activities. Managed by private owners, the dam contributes to the local ecosystem while offering a safe and enjoyable environment for residents and visitors alike. With its crucial role in providing water storage and outdoor recreation opportunities, Timberlakes Dam embodies the harmonious blend of human infrastructure and natural beauty in the Pacific Northwest.