A couple of questions.
In Juan’s update 3/17 that shows the re-start of the spillway,
https://www.youtube.com/watch?v=kQe0J5NLLT4 he apparently was told that 40,000 cfs was the max safe flow right now although the spillway was built for a capacity of around 150,000 cfs. That’s a little less than a third capacity it can run right now.
1) Question: What was the actual sustained top flow rate on the main spillway during the February 2017 time-frame when basically all hell broke loose?
2) Question: If they were able to effectively repair and seal off the upper portion of the spillway, could a viable alternative be to simply get rid of the remaining lower spillway and the debris down to the bedrock below the upper spillway and let the water free-fall from the upper spillway onto and through the bedrock to the river below, a bit like it’s doing now but after all the non-bedrock is cleared?
1) if my memory is correct the flow was at 50,000 cfs and in the process of ramping it up to 70,000 when the first pieces started to fly off
2) I’m not sure. But I don’t know what the “bedrock” is and I don’t think they do either. It looks to me the flow cut a channel into the “bedrock” on the right side and was getting deeper each day. So even the “bedrock” can still be eroded away over time