Watch the labor intensive work going on at Oroville Dam spillway

As work continues on the Lake Oroville Dam spillways (Aug. 8, 2017), concrete is poured into 30- to 80-foot holes to create the underground cut-off wall downslope of the emergency spillway. Crews continue to assemble and erect electrical towers to reroute power lines away from the spillway. Rebar is installed for the upper spillway walls and structural concrete, concrete is poured and graded, and more stay-forms are installed.
Department of Water Resources