Final Update: The California Department of Safety of Dams responded to the Twain Harte Lake dam to conduct an inspection. The inspection determined the dam is structurally sound and clear for continued use.

Subsequently, all evacuation advisories have been lifted. Twain Harte Lake Association will continue with draining water from the lake and monitoring the dam.

December 23, 2021 - Reports of a loud “explosion” noise at the Twain Harte Lake Dam sent first responders to investigate. The result was the discovery of some cracks to the granite at the dam.

As the incident is being handled, we are issuing evacuation advisories for the areas of Good Shepherd Drive and Lucky Strike Trail in Upper Crystal Falls.

Updates: Water will begin to get released from the Twain Harte Lake which will create a rise in water levels downstream.

Please remain calm.

Additional evacuation advisories will include all areas east of the Sullivan Creek Bridge along the creek.

After investigation, it was determined the “explosion” noise heard was likely the rock at the dam cracking. There were no signs of any explosive devices or explosions in the area.