VIDEO: Lake Oroville Emergency Spillway May Fail With Increasing Water Flow Water levels are increasing and there’s rain in the forecast, so water flow is expected to increase in the Lake Oroville Emergency Spillway. A hole in the spillway has increased the risk of flash floods, which has prompted an evacuation of thousands of people below the dam. The entire structural integrity of theย emergency spillwayย is currently at risk and that has […] Chris Wallner | February 13, 2017 3 Comments