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Flooding in New Orleans


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So there are 6 of using flying into New Orelans on Mar. 21, and leaving from New Orleans on Mar 25 for our cruise. One of the people we are traveling with posted that there is a flood warning for New Orleans I have added what I could find. How concerned with this should we be?

https://www.theweathernetwork.com/us/alerts/high-alert/louisiana/new-orleans

 

Flood Warning

 

Issued at 12:30 Friday 02 March 2018

Mississippi River At Reserve affecting St. Charles...St. James and

St. John The Baptist Parishes

Mississippi River At New Orleans affecting Jefferson...Orleans...

Plaquemines and St. Bernard Parishes

The National Weather Service in New Orleans/Baton Rouge has issued a

 

* Flood Warning for

The Mississippi River At New Orleans.

* from Tuesday March 13 to Friday March 23.

* At 11:00 AM Friday the stage was 12.9 feet.

* Minor flooding is forecast.

* Flood stage is 17.0 feet.

* Forecast...The river is expected to rise to near flood stage

Tuesday March 13th. It will remain at that level for several days.

* Impact...At 17.0 feet...The river level will continue making

navigation and docking difficult. The city is protected to a

project height of 20 feet.

* Impact...At 13.0 feet...Strong eddies will develop below the gage at

Carrollton, with increased negative impacts on navigation.

 

 

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The Mississippi rises every year in the spring with the spring rains and melting Northern snow. Nothing to be concerned about.

 

Thank you. That is what I was hoping to hear we are from Canada so don't know a lot of what is normal for that area.

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There are flood gates at two points in the Mississippi River above New Orleans. The one most likely to open is the one just a few miles upriver The Bonnet Carre' Spillway. IF needed this will drain the excess water from the Mississippi River into Lake Pontchartrain. It's a good system that has been used since 1931. There is another spillway closer to Baton Rouge that is used much less frequently.

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From the forecast, it appears that the river is forecast to rise to 17 feet, but the levees in the city are at 20 feet.

 

However, high river levels will mean higher currents and difficulty for most ships to dock, as most ships do not have the power or maneuverability of cruise ships. They may have some tugs standing by just in case. It will also likely mean the transit up and down the river will be slower, to reduce the wake and the possibility of overtopping the levee.

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Actually the Corps announced earlier this week that they will begin opening gates on the Bonnet Carre spillway to divert some of the flow of the Mississippi into Lake Pontchartrain. Again this is a normal, almost annual, occurrence.

 

 

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