Lake Arrowhead

About Lake Arrowhead

The primary purpose of Lake Arrowhead is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Arrowhead Lake Association (private). It impounds the Little Bear Cr.

The dam stands 190 feet tall and stretches 720 feet across, creates a reservoir covering 780 acres, has a maximum storage capacity of 48,000 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1922, the structure is over a century old.

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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 05/22/2025.

At 190 feet, this dam is taller than 99% of all dams in the United States.

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