Couple of points here.
The area in question is in Northern CA, and is as conservative a place as there is. Logging and lumber country, till the greenies decimated that industry, and this region. They don't need any more problems.
The "emergency spillway" that is failing is the "rim of the bathtub" The bathtub is overflowing.
The concrete spillway that failed earlier in the week is not the one that we are concerned about today. The only reason that the concrete spillway is relevant, is that flows were throttled back to prevent erosion adjacent to the failed spillway.
Difficult to test the emergency spillway, as it would take 900+ feet of water to get to it.
As to repairing the concrete spillway, the lake is dumping 65,000 CFS of water, or very close to 30,000,000 gallons per minute. That makes for a tough band aid.


Democracy is not freedom. Democracy is two wolves and a lamb voting on what to eat for lunch. Freedom comes from the recognition of certain rights which may not be taken, not even by a 99% vote.
*Marvin Simkin* L.A. Times (1992)