Rumored Dam Failures

McCoy Flat Reservoir dam, 1915. Courtesy of Alphozene Terrill, granddaughter of Ben H. Leavitt

Note: This originally appeared on December 19, 2019. With all the flooding issues around California, I thought it would be worth while to visit the topic locally.

The winter of 1937-38 was one for the record books. There was a lot of wide spread flooding in the spring, including the breach of the Said Valley Reservoir. By mid-April 1938, Susanville attorney and a Director of the Lassen Irrigation District Hardin Barry released a statement that regarding the rumors circulating that McCoy Flat and Hogs Flat reservoirs were on the brink of collapse. As to Hogs Flat, Barry stated that it was so constructed that when full, surplus waters will flow through a natural depression in the direction of Worley Ranch. As to McCoy Flat it was pointed out that only nine feet of the thirteen feet of flash boards were installed and there was no imminent danger to the dam. Yet, to ease everyone’s fears the district hired a watchman at McCoy. It should be noted that Lassen Irrigation District owned the two reservoirs. Barry concluded that in 1932 that the State Water Resources Board had inspected the dams and deemed they were safe to use.

Hog Flat Reservoir, April 1940. Courtesy of Lola L. Tanner

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