All I know is that the peak on the butte is 1600’ while the surrounding farmland is 100’ MSL. The level of the lake behind the dam is 1000’.
Make that 2100’ where there is a big communications tower. Road to the top looks paved but I’m guessing it is closed to the public. Lots of high enough terrain around Oroville, though; you only have to get up a couple hundred feet to be completely safe from flooding.