Boosted by this week's storms, Lake Casitas in the Ojai Valley reached its full capacity and started to spill on Feb. 18, officials said.

OROVILLE, Calif. -- A gaping hole in the spillway for the tallest dam in the United States has grown and authorities said they expect it will continue eroding as water washes over it but the Oroville ...

A combination of heavy rainstorms and snowmelt caused the water held back by the coffer dam to overtop an emergency spillway, ...

When complete, the improved spillway will not only protect the lake and its visitors but also provide a scenic new landmark within Honor Heights Park — a place designed to be admired from across the ...

OROVILLE, Calif. (KGO) -- A team of experts is warning of a "very significant risk" if the main spillway of a California dam is not operational again by the next rainy season. The warning is contained ...

OROVILLE, Calif. (KGO) -- Residents were returning home after officials lifted evacuation orders near the Oroville Dam Tuesday afternoon. Water officials say they've drained enough of the lake behind ...

OLDTOWN, Idaho – A damaged spillway gate will make it a little harder for a federal dam to control the water level in Lake Pend Oreille for the foreseeable future. The U.S. Army Corps of Engineers is ...

HYRUM, Cache County — An aging spillway that brought some concerns for failure during a record water year in 2023 is now being replaced. The project will take about four years, but managers with the ...

It’s a sight that usually means California is having a good winter and water supplies are healthy. This week, operators at Oroville Dam, the tallest dam in the United States, which holds back ...

Why does the upper reservoir at the Taum Sauk power plant no have an overflow spillway? Nobody seems to have noticed that an overflow spillway on the upper reservoir would be an effective safety ...