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Started By
Message
re: Morganza Spillway may or may not open for a 3rd time -- lack of clear info from ACoE
Posted on 5/28/19 at 9:05 am to Duke
Posted on 5/28/19 at 9:05 am to Duke
LINK
Just posting this Twitter vid of the ARCOE blurb about the Arkansas at Dardanelle. It shows over 400,000 cfs. Am I correct that the Morganza could be 3 times that at around 1.1 mm cfs?
Just posting this Twitter vid of the ARCOE blurb about the Arkansas at Dardanelle. It shows over 400,000 cfs. Am I correct that the Morganza could be 3 times that at around 1.1 mm cfs?
This post was edited on 5/28/19 at 9:11 am
0
Posted on 5/28/19 at 9:07 am to Sao
(no message)
This post was edited on 11/22/20 at 4:24 pm
Posted on 5/28/19 at 9:11 am to TDsngumbo
quote:
sediment at the bottom of the river. It has increased enough to raise the riverbed so high that it takes less water to threaten overtopping the Morganza structure than it did ever before.
To add some further detail to this information, the issue here is not just "mud" sediment, but also giant sandbars that are constantly shifting and moving slowly down the river. These sandbars are made of more dense particulate than what we think of what sediment is in the traditional dredging sense. They also are not necessarily increasing the height of the riverbed only, but instead constricting the flow of the river. For example, near Angola, the river has decreased in width by over 800 meters in the past couple of decades, due to a large sandbar that has formed and is growing at that bend.
This is one way the river can get relatively higher in some areas and not in all areas, when flows start to increase. The riverbed getting higher as well as width restrictions all serve to reduce the cross sectional area available to the river flow, thus it backs up and builds higher.
This post was edited on 5/28/19 at 9:14 am
Posted on 5/28/19 at 9:12 am to ExtraGravy
quote:
This could become our new normal. While droughts are a problem in much of the country, as our climate changes Louisiana may be looking to get overrun with water, more and more.
quote:
ExtraGravy
Go home, Gary.
Posted on 5/28/19 at 9:12 am to ExtraGravy
Basically, nowhere in the country is in drought conditions right now. Changing/ever-fluctuating conditions are what is "normal." See, e.g., 1929.
Posted on 5/28/19 at 9:14 am to TDsngumbo
He's not wrong, though the Mississippi River situation has other issues in terms of the river bed being built up higher. A warmer climate will lead to more high precipitation events.
Posted on 5/28/19 at 9:15 am to Y.A. Tittle
And the "Dust Bowl" drought conditions of the 1930s. Earth gonna earth.
Posted on 5/28/19 at 9:16 am to ExtraGravy
quote:
Look at all these threads about new flooding threats. And water levels got very high early in the year, too.
It’s been raining/snowing in the middle of the country since July
quote:
While droughts are a problem in much of the country, as our climate changes Louisiana may be looking to get overrun with water, more and more.
We live on the coast, baw. You think this is the first time we’ve had an issue with water?
Posted on 5/28/19 at 9:17 am to ExtraGravy
quote:
, as our climate changes
This has nothing to do with climate change pseudo science. The amount of water coming down the river right now is lower than other major flooding events over the past century or more.
Posted on 5/28/19 at 9:18 am to ExtraGravy
Flooding has as much to do with the river characteristics as it does the rain events. We aren’t letting rivers go where they want. Thus, problems.
Posted on 5/28/19 at 9:33 am to TDsngumbo
quote:
ExtraGravy
Go home, Gary.
Posted on 5/28/19 at 9:51 am to Thib-a-doe Tiger
This is what is making its way through the locks and dams of Arkansas headed to your River. The river is expected to rise another 4-5 feet as well.
LINK
LINK
This post was edited on 5/28/19 at 9:59 am
Posted on 5/28/19 at 9:56 am to ExtraGravy
quote:
This could become our new normal. While droughts are a problem in much of the country, as our climate changes Louisiana may be looking to get overrun with water, more and more.
The reason the farmland is so fertile a hundred miles in both directions of the river is because, in geologic time, the river floods catastrophically every five seconds.
Posted on 5/28/19 at 9:57 am to Sao
So I was just looking at Google Earth of the Spillway....do all of those camps in Butte Larose flood?
Posted on 5/28/19 at 9:59 am to tgrbaitn08
They do every time the water gets in them.
Posted on 5/28/19 at 10:00 am to tgrbaitn08
quote:
do all of those camps in Butte Larose flood?
Not sure but I don't think so. The spillway is on the east side of Whiskey Bay Pilot Channel isn't it?
ETA: Maybe they do. The protection levee doesn't go as far south as I thought it did.
This post was edited on 5/28/19 at 10:03 am
Posted on 5/28/19 at 10:01 am to Bullfrog
quote:
They do every time the water gets in them.
Posted on 5/28/19 at 10:03 am to tgrbaitn08
quote:
do all of those camps in Butte Larose flood?
Probably....I know KATC and KLFY has done several reports in BL, and most of the camp owners are expecting to be flooded.
Posted on 5/28/19 at 10:06 am to MountainTiger
Those Bayou Bridge Pipeline baws better get their truck nuts out of there
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