Culmback is a significant dam located in Snohomish, Washington, with a primary purpose of hydroelectric power generation. Built in 1983, this rockfill dam stands at a height of 262 feet and has a storage capacity of 193,440 acre-feet, making it a crucial infrastructure for managing water resources in the region. The dam serves multiple purposes including flood risk reduction, recreation, and water supply, highlighting its importance in supporting the local ecosystem and community.

Managed by the Federal Energy Regulatory Commission, Culmback has a high hazard potential and a moderate risk assessment rating. Despite its age, the dam's condition assessment is not available, emphasizing the need for regular inspections and maintenance to ensure public safety and operational efficiency. With a drainage area of 68 square miles and a maximum discharge capacity of 57,132 cubic feet per second, Culmback plays a vital role in water management for the Sultan River and Skykomish River, showcasing its significance in regulating water flow and supporting various environmental activities.

As a key structure in the Seattle District, Culmback's design by R.W. Beck & Associates reflects state-of-the-art engineering for sustainable water resource management. With its strategic location and critical role in hydroelectric power generation, Culmback stands as a testament to the intersection of water resource management and climate resilience, embodying the importance of sustainable infrastructure in safeguarding our natural resources for future generations.