Lake Roslyn in Clackamas, Oregon, is a fascinating hydroelectric reservoir managed by a public utility. The dam, completed in 1959, stands at a height of 45 feet and spans a length of 8000 feet, creating a storage capacity of 2011 acre-feet. With a surface area of 152 acres and a drainage area of 4.5 square miles, the reservoir is fed by the Big and Little Sandy Rivers and boasts a maximum discharge of 800 cubic feet per second.

Situated in a picturesque location in Troutdale, Lake Roslyn not only serves as a source of hydroelectric power but also provides recreational opportunities and supports wildlife habitats. The dam, primarily made of earth, features a slide gate for outlet control and is regulated by the Oregon Water Resources Department. Despite its significant hazard potential, the dam's condition is currently not rated, highlighting the importance of regular inspections and risk management measures to ensure its structural integrity and the safety of surrounding communities.

As a key water resource in the region, Lake Roslyn plays a vital role in water management and climate resilience efforts. Its strategic location and design make it a valuable asset for sustainable energy production and flood control. With proper maintenance and monitoring, this reservoir continues to contribute to the state's renewable energy goals while safeguarding against potential risks associated with dam infrastructure.