Lake Roslyn

About Lake Roslyn

The primary purpose of Lake Roslyn is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Dunlap, David J. (private). It impounds the Howdy Creek near Walden.

The dam stands 42 feet tall and stretches 880 feet across, creates a reservoir covering 27 acres, has a maximum storage capacity of 425 acre-feet, and collects water from a drainage area of 25 square miles. Completed in 1938, the structure is well-established, with more than 75 years of service.

This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 10/17/2022.

At 42 feet, this dam is taller than 89% of dams nationwide.

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