It is incredible people are evacuating down stream.
I’m in the foothills - no danger, but I have family in Sac. that could flood if the whole thing goes.
1. The town of Oroville southwest to Gridley--possibly under 25-40 feet of water.
2. Everything down the Feather River south to the Marysville/Yuba City area, where it could be hit with a ten-foot high "wall" of water within 12 hours of the spillway failure.
3. The Sutter and Yolo Bypasses, already under 20 of water as I type this. This could overwhelm the protective levees around the bypasses, and that could put Knights Landing, West Sacramento (and the westernmost parts of Sacramento), Woodland, Davis and even Dixon in danger.
4. That surge of water could put many towns in the Sacramento-San Joaquin River Delta in danger, especially from Rio Vista south, since the outlet of the Yolo Bypass is near Rio Vista.
5. Towns like Antioch, Pittsburg, and Martinez could be threatened from rising water levels.
6. The San Pablo Bay could suddenly have a rise in levels, and that could threaten every town along San Pablo Bay and the oil refineries, too.
7. They may have to consider evacuating the eastern shoreline of San Francisco, since that surge of water could threaten many of San Francisco's piers.
We're talking a dam spillway collapse that could affect several million people. :-(