Putting plates into a waterflow of that volume will pretty much be
certain to rip out of the concrete or create erosion of the concrete
around the attachment points. Cavitation is a bitch... Right now
they can't stop the flow. Also pretty much most of the spillway below
the hole is gone, so there isn't a lot to attach it to. The turbines
are shut down right now because the erosion has created a dam in the
stream that has raised the water levels upstream to the point they
cannot operate the turbines. The turbines were maxed out at 15K cfs up
to that point. Yeah, I have been pretty much obsessing over this...
My inlaws were stuck going nowhere in Yuba city last night for 4 hours
in gridlock ( at one point not moving for 2 hours. ) before deciding it
was safer at the house on the second floor...
On 02/13/2017 10:36 AM, Chuck McCown wrote:
Easy to armchair quarterback but I would think they could bolt 1 inch
plates over the hole in the main spillway, put some I beam piles under
the plates and open it back up. At least until they take some inches
off the reservoir. I wonder if there is a way they can set the angle on
the turbines to waste more water there too.
-----Original Message----- From: Robert Andrews
Sent: Monday, February 13, 2017 11:28 AM
To: af@afmug.com
Subject: Re: [AFMUG] OT - Oroville dam
As of this morning they are saying the regular spillway is supporting
the 100K cfs without further damage. If that it true, then there is
the ability to deal with what's happening over the next couple of weeks,
which looks like 4-5 sequential storms. We got a 4-5 day break in
weather this week but if it goes back to last months pattern we are in
serious trouble throughout the west. That spillway needs to do 100K cfs
for weeks to keep pressure off the hillside below the emergency
spillway. Californa and the Feds were sued over in 2005 to put
concrete down on that hillside by the Sierra Club. The worse case
situation is that the lake goes over the emergency spillway, it erodes
below, the spillway fails and the hill below what was the spillway just
keeps going away. Moving water, and it would be a lot, would grand
canyon the hill... It would be enough water to destroy most of the
feather river and Sacramento levee system below the dam.. That would
be really really bad... ( Inlaws in Yuba city )...
On 02/13/2017 08:47 AM, Jason Wilson wrote:
100,000cfs is correct. That spillway will support 250,000cfs, but the
Feather River channel will only support about 216,000cfs. It has been
10 years since the Channel has been stressed to this point, last time
there were levee breaches. Their hope is to drawdown the reservoir 50
feet below the rim to do a couple things, one is to take pressure off of
the presumed damaged emergency spillway. The other is to make room for
precip that is coming into california towards the end of the week. Of
course they cannot do any repairs to the facility until after the rainy
season is over, and the snowmelt had finished.
Jason Wilson
Remotely Located
Providing High Speed Internet to out of the way places.
530-651-1736
530-748-9608 Cell
www.remotelylocated.com <http://www.remotelylocated.com>
On Mon, Feb 13, 2017 at 8:31 AM, Bill Prince <part15...@gmail.com
<mailto:part15...@gmail.com>> wrote:
I heard a reporter saying that the water going over that spillway
was doing 100,000 cubic feet per second. I have a really hard time
visualizing that amount of water. Could also have been a mis-quote
by the reporter...
bp
<part15sbs{at}gmail{dot}com>
On 2/13/2017 8:11 AM, Ken Hohhof wrote:
So the �good news� is they�re going to drop bags of rocks
from helicopters?____
__�__
I hope my good news never involves helicopters dropping rocks.____
