Sorry for the size y'all, but this is worth some scrolling:
Posted on 02/12/2017 4:26:47 PM PST by janetjanet998
Edited on 02/12/2017 9:33:58 PM PST by Admin Moderator. [history]
The Oroville Dam is the highest in the nation.
I read earlier that the top of the dam is 20’ higher than the main spillway. The auxiliary spillway elevation must be in between.
Right...I was imprecise, what I meant to say is that it was a spillway for water level control that is at the maximum level they would allow it to rise to.
If it was above, it would spill over the top of the dam...:)
Not likely - in fact, that's what they've been trying (too slow in reacting, obviously) to do, which has led to the current crisis. There's just too much water to move and the spillways can't handle it.
I believe that the main spillway can drop the lake elevation approximately 4’ a day given normal inflows to the reservoir. That’s only a tiny fraction of lake volume.
just saw a shot of the emergency spillway...
The erosion is really bad and very deep
it was even eating south back towards the main spillway
Vulnerable, yes! When an audit is demanded, then the public will discover their millions are in the pockets of FOJ—friends of Jerry.
just a still shot of a small portion...
this is live but you can rewind....about 40 mins from this posting....you can also noticed the hillside is now a cliff about a third of the way down the good portion of the main spillway
https://www.youtube.com/watch?v=dTWyJ1LmDsk
Holy cr@p. Is that the auxiliary spillway?
For the next 4 days, output from Oroville should be between 100k cfps and 140k. Predicted inflow at the height of the storm should be 220k cfps.
So for every hour between now and the large inflows, that’s an hour extra the dam can handle the inflow.
There were a number of considerations at Oroville; they wanted to see how the emergency spillway handled. They found out that it just wasn’t set up to handle much of anything, and returned to using the damaged spillway. They are repairing the emergency spillway just in case it has to be used again.
They also wanted to reduce the outflow to protect river fish from silt (?!?!?!?!?!??) but the people wearing big boy pants now appear to be in charge of Oroville and are managing the water and letting other agencies manage their things as they can.
Just below it, if my orienteering is correct.
Jeez louise. Continued prayers for all in harm’s way.
The road that’s washed out is the one that runs across the top or the main spillway and goes over to that parking lot/boat ramp that was flooded yesterday.
That’s the road that leads up the hill to the large parking lot next to the auxiliary (emergency) spillway. It was washed out when water rose high enough to spill over the auxiliary spillway wall.
The water is lower now, a couple of feet below the top of that wall, and they’re starting to work on shoring up the “dry” side of that spillway as a temporary fix to hopefully hold them through the next big rain and the coming spring melt.
I was wondering about that a couple of days ago when I saw the cars parked on the top of the dam. I thought that it looked like they could get trapped up there. Helicoptered out I guess.
+1 to you - thanks.
Exactly. Evacuating is sometimes necessary but always a burden. This isn’t the Hollywood set here, these are real people.
I heard they’ll likely be coming back to their homes this afternoon, but all bets are off when the rain starts again.
Well.. I guess it’s good they got practice for when they have to do it again.. :(
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