[ProtectOurFreedom]

The sheer scale of the damage to the spillway is gigantic. How are they possibly going to fill in the eroded canyon between the broken end of the spillway and the river? It looks like a multiyear project to fix the spillway — can it possibly be done in 6 or 7 months? What state will it be in for the new rainy season starting Oct or Nov 2017?

[RedWing9]

How are they possibly going to fill in the eroded canyon between the broken end of the spillway and the river?

Why bother? Leave it as it is...

[HiJinx]

There’s a much closer deadline to worry about. The CA DWR plans to start releasing water over that very damaged spillway when the lake level reaches 860 ft. At this link (https://cdec.water.ca.gov/cgi-progs/queryF?ORO) you can see where the lake level is (858.7’ as of 0700 PST). It won’t be long at all before the lake reaches the DWR’s ‘must release more water’ decision point.

[Axenolith]

Put a portable cement plant up there and base-fill the erosion with controlled density fill (2-3 sack slurry), then form the new spillway on it and pour it (concrete).

[Disambiguator]

The sheer scale of the damage to the spillway is gigantic. How are they possibly going to fill in the eroded canyon between the broken end of the spillway and the river? It looks like a multiyear project to fix the spillway — can it possibly be done in 6 or 7 months? What state will it be in for the new rainy season starting Oct or Nov 2017?

They don't have that long. The 20 foot snowpack in the Sierra-Nevada range will start melting very soon. That water has to go somewhere!