California dam water level drops after massive evacuation
Water levels have dropped at California's Lake Oroville, stopping water from spilling over a massive dam's potentially hazardous emergency spillway after authorities ordered the evacuation of nearly 200,000 people from towns lying below the lake.
California department of water resources officials are waiting for the light of dawn to inspect an erosion scar on the spillway at the Oroville Dam, the US's largest.
