Cranes and trucks near a large concrete structure. Men in fluorescent jackets and helmets work. One guides a large tube from overhead down through a metal grid structure. The tube fills the structure with wet concrete. Men feed tubes down. Aerial view of the structure, crane raising the tube from the concrete truck to the workers on the platform. (concrete pumping) Worker guides the concrete tube as it continues filling. They are on top of the concrete while they are constructing which is several stories high. A worker smoothes the wet concrete with flat hand paddle. Aerial view of the crane and trucks. High aerial view of a wide concrete spillway canal, which starts at the top of a hill with a body of water and ends emptying into a river. Trees and low mountains fill the landscape around the structure. The spillway canal is as wide as a highway. Moving up the hill in the concrete spillway, passing construction equipment. Tall cranes line the sides of the canal as we near the top. The spillway begins as a kind of multi-level dam with roads running across it on two levels. Beyond it, a large lake. Moving down the spillway at sunset, area is still under construction. At the mouth of the spillway, for large concrete blocks. Text, For more information and updates visit water dot C.A. dot G.O.V. slash Oroville dash Spillways. And follow D.W.R. on Social Media. Facebook, Twitter, Instagram, YouTube symbols.