Nathan Morgan has been hanging over the side of side of Shasta Dam recently — sometimes upside down — making marks on the side of the dam. Morgan is part of a U.S. Bureau of Reclamation crew drilling holes in the side and on the top of the dam to test the strength of the concrete.
Geologists are beginning take core samples to collect data for a proposal to raise Shasta Dam by 18 1/2 feet. The Bureau of Reclamation says the samples will be taken over the next few months from on, around and deep within the dam, in order to characterize concrete and geology conditions. The federal government has been studying the idea of raising the dam and enlarging Shasta Reservoir on and off since the 1980s. But the state of California, environmental groups and the Winnemem Wintu Tribe have been and remain opposed.
Two dams critical to U.S. national security are at high risk for “insider threats” that could impair operations because of poor computer security practices such as too many employees having access to administrator accounts and failures to routinely change passwords, according to a new inspector general report.