current water level at Oroville dam 854.23 feet as of 3:00 pm this afternoon. Capacity 900 feet. If I understood correctly when I read a few days ago, the main spillway can drain about one inch of waterfall every 24 hrs. According to Maggie’s chart upthread, 4-5 inches will put water over the top of the auxiliary spillway.
Grass Valley south of Oroville is on track for 7.5 to 10 inches starting Sunday night. To the north rainfall estimated around 4 inches.
At 100k CFS, it can lower the level much faster than that... the question is how high they want to bring the rate with the damage that has already occurred... IIRC, I think the main spillway (I damaged) was rated for 150k... they ran it at 100k for much of the last week to drop it 45ft while inflow was still ~30k CFS most of the week. Don’t think the water will top the espillway again, but there are lots of other concerns as well.