Why aren't the spillway gates letting out at least some water during a serious flooding situation?????!!!!
|Derek Dack commented on a post|
It has four Tainter gates. The other five gates are wood slats. Are they a poor man's sluice gate?
|One of five photos taken by Scott Angel and Bart Becker from HoltIndependent|
A dam breaking upstream explains why we see video of the bridge near Niobrara being washed out and video of buildings in Niobrara being washed away by the river.
I just checked The Weather Channel on TV and they are running their normal prime time shows rather than talking about the flood emergency in Nebraska, Iowa, and Wisconsin. I'll bet if a dam broke in Georgia instead of Nebraska, The Weather Channel would be talking about the weather instead of their scheduled programming.
(new window) At least a couple of the Tainter gates still worked in 2010.
A A nice demonstration of a hydraulic jump:
The current owners of the Spencer Dam were trying to get rid of it and its liability, but they didn't get rid of it soon enough.