The area around the Oroville Dam is still flooded and more rain is predicted per the latest weather forecast. The reservoir is lower than in previous days. However, the dam still remains a threat. The interactive model in the link below shows what the height difference looks like between the dam and the town below. The velocity of the water released would most likely create an upper plane bed and perhaps standing waves and antidunes along the bed of the Feather River. What is happening at this dam is similar to events that occurred at the Glen Canyon Dam.
Link for interactive 3D model: http://www.sacbee.com/news/local/article133545764.html