A Twain Harte Community Services District sewer pipe is attached to the rock dome that abuts Twain Harte Dam and cracked on Aug. 3. Guy McCarthy / Union Democrat
Workers and engineers this week were hustling to prepare the damaged Twain Harte dam for coming winter rains and snowfall.
The work entailed drilling a hole in the base of a dam buttress to ensure the now-empty reservoir behind it has a safety outlet in the event of a 10-year storm this winter.
The drilling was in addition to continuing core samples of a granite footing portion of the structure known as “The Rock” which cracked Aug. 3, which spurred panic and a flash flood warning downstream.
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