If initial lessons included in an interim status report on the cause of February’s failure of the main spillway at California’s Oroville Dam are heeded, hundreds of U.S. dams more than 50 years old may have to be re-examined and upgraded.

Utah State engineers test concepts in the lab on a small scale before on-site crews in California repair damaged spillway

Dam engineers and safety experts say the drama that unfolded in February at California’s Oroville dam could be a good thing for dam safety in the U.S.

Design, maintenance and natural causes among possible problems with huge California dam.

In a race to fix the damaged Oroville Dam’s main spillway by November, California Dept. of Water Resources, the operator of the country’s tallest dam, is going to bid with a 65%-complete design that breaks recovery efforts into three parts, with an ultimate goal of doubling the main spillway’s release

On Sunday, Feb. 12, California officials ordered the immediate, mandatory evacuation of 188,000 residents from towns below Oroville Dam.

A call for total replacement of the main spillway at a new location.