Mandeville council agrees to purchase flap valves for flood control

Mandeville council agrees to purchase flap valves for flood control

MANDEVILLE, LA (WVUE) - Mandeville is giving the go-ahead to a long-awaited project to lessen the problem of high water in flood-prone Old Mandeville that will require some digging along the lakefront.

For two years, council members have been pushing for the installation of 32 flapper valves designed to allow drain water out of Old Mandeville, and keep lake flood water out. The valves close automatically when high water pushes in from the lake - something that occurs far too often, especially during tropical storms and hurricanes.

The work won't be cheap. The council approved spending $300,000 for the project.

"We should see installation in early May and they should be in by the start of the storm season," said Mandeville Councilman Rick Danielson.

Though the council voted five to nothing for the flap valves, there are still other concerns when it comes to protecting the area.

There are three small bayous or ravines that cut into town, and studies call for the purchase of closure gates or small dams at an estimated cost of $30 million.

The flapper valve work will require some digging, since the valves will be installed underground, about 15 to 20 feet inland, from storm drain openings at the seawall to prevent silting.

"Once the parts come in, they will plan where we will start so we can get them in as efficiently as we can with minimal disruption," said Danielson.

Though not a complete system, Mandeville officials are confident the 32 new flapper valves will help minimize flooding along the lakefront.

St. Tammany flood control is now under the authority of a newly created levee authority. But Mandeville officials wanted to move forward with this project, because the levee board, doesn't have funding yet.

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