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Long-awaited Drainage Project in Slidell Steadily Moves Forward

Long-awaited Drainage Project in Slidell Steadily Moves Forward

The Lower W-15 Area/Lower French Branch Basin Drainage Improvement Project in Slidell, formally announced by St. Tammany Parish Government last January, continues to move forward as the design for the detention pond is complete, and the bid to construct the pond is now open.

“This first step, building the 54-acre pond will, on its own, improve the movement of the water out of the residential areas during heavy rain events or flooding situations, and improve the conveyance capacity of the surrounding canals,” said Pat Brister St. Tammany Parish President. “As a result, it will offer multiple benefits to the entire French Branch area including increased drainage upstream and downstream.”

Construction of the detention Pond is just one component of the overall drainage improvement project that also includes the widening of the W-15 Canal, expected to go out to bid by the end of 2017. The pond, designed by Duplantis Design Group, PC, is a 54-acre gravity storage pond, with an average depth of over six feet, which is equivalent to over 107 million gallons of water when filled to capacity. The Lower W-15 Area/Lower French Branch Basin Drainage Improvement Project is funded in part by a $7.9 million Hazard Mitigation Grant, and $1.8 million in Parish funds. Construction of the pond is expected to be complete in early 2019.

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