A final independent report from a forensic team backed by the Association of State Dam Safety Officials found that rapid, static liquefaction of earthen embankments caused the May 2020 collapse of the Edenville and downstream Sanford Dams in Michigan.
Kiewit would start $445M Klamath River work next year to take down four dams in Oregon and California after FERC and Interior Dept. sign off on key environmental review.
The population of North Texas has surged by 650,00 over the last five years, increasing the demand for essential services from ENR Texas & Louisiana’s 2022 Owner of the Year, the North Texas Municipal Water District.
An effort to bolster flood control in northeast Houston through improvements to the Lake Houston dam have been scaled back due to financial constraints on the project. Houston officials say that the length of proposed floodgates will need to be reduced by half to meet the project’s budget.
Ethiopia has begun generating electricity at its new 5,000-MW roller-compacted concrete gravity-type dam on the Nile River. The first 375 MW went to the national grid on Feb. 20.
Hydropower sector participants usually at odds—industry firms, dam safety groups and environmental advocates—now are finding common ground in project funding and new legislation.
These 80-year-old structures are critical components of a system that ensures consistent navigability and access along the Mississippi River from Minnesota to the Gulf Coast.
The historic Derby Dam diverts water into the Truckee River that would otherwise flow into Pyramid Lake. However, that diversion led to the near extinction of the endangered native Lahontan cutthroat trout in the lake.
To remediate seismic safety issues and enhance flood-handling capacity at the concrete thin-arch dam, the $32-million project called for cutting a notch in the existing structure, placing a new ogee-shaped spillway and installing reinforced armor at the dam’s base.
The $11-million project to raise Hell Hole Dam in Foresthill, Calif., was never going to be easy. Built in 1966, the earth-and-rock embankment dam impounds two rivers to form Hell Hole Reservoir in a rugged, remote location.