If anyone is interested, Comite River Diversion Task Force meeting in progress

Thanks for sharing. IMO this is one of many infrastructure projects that Louisiana really needs.

Here is my perception of the Comite diversion project: it will cost approximately $200 million more to complete (after $117 million has already been spent) and it will lower a flood crest on the Amite River at Denham Springs by 6 inches.

Is my perception wrong?

ETA: For your troubles....

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Wednesday, January 25, 2017: Astrophotographer Marc Juneau took this picture of the Orion nebula from his backyard in San Pedro de Alcántara on the southern coast of Spain last spring. The Orion nebula lies more than 1,300 light-years away in the constellation Orion, just south of Orion's belt. It's bright enough to see with the naked eye, and looks like a star in the middle of Orion's sword.

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Here is my perception of the Comite diversion project: it will cost approximately $200 million more to complete (after $117 million has already been spent) and it will lower a flood crest on the Amite River at Denham Springs by 6 inches.

Is my perception wrong?

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Here are the estimates I've seen:
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Comite River at White Bayou

10 year flood 6.2 feet lower

25 year flood 6.1 feet lower

50 year flood 6.3 feet lower

100 year flood 6.2 feet lower



• Comite River at Hooper Road

10 year flood 6.0 feet lower

25 year flood 5.7 feet lower

50 year flood 5.1 feet lower

100 year flood 4.4 feet lower

• Comite River at Comite. LA. (Joor Rd)

10 year flood 4.8 feet lower

25 year flood 4.8 feet lower

50 year flood 4.3 feet lower

100 year flood 3.8 feet lower



• Comite River at Hurricane Creek



10 year flood 4.2 feet lower

25 year flood 4.4 feet lower

50 year flood 4.1 feet lower

100 year flood 4.1 feet lower



• Amite River at Denham Springs

10 year flood 1.5 feet lower

25 year flood 1.5 feet lower

50 year flood 1.4 feet lower

100 year flood 1.2 feet lower



• Amite River at Port Vincent

10 year flood 0.8 feet lower

25 year flood 0.7 feet lower

50 year flood 0.6 feet lower

100 year flood 0.6 feet lower

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With respect to the 2016 flood: It would have helped a lot of people Central, Baton Rouge, Zachary, and parts of Livingston had it been in place in the past flood....but the scale of what we saw in 2016 is so large that a lot of houses would have still flooded in southern Livingston and down stream at Port Vincent and parts of EBR and AP. It's designed to mitigate another flood on the scale of what the region saw in 1983.

I've seen estimates that it would have saved enough money in flood damage that it would have paid for itself several times over had it been completed in 2012.

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Obviously the main benefit will be to property owners along the Comite River with less benefit to property downriver along the Amite River.

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That seems to be the case. The Comite basin (Baton Rouge, Central, Zachary, Baker, Hurricane Creek) and the parts of the Amite that can back flow easily into the Comite (Denham Springs, Monticello, Centurion, etc.) would benefit the most.

I don't think the Bayou Manchac, Henderson Bayou, Port Vincent, or French Settlement flooding would have been significantly lowered had the canal existed in 2016. Like you said...maybe 6 or 8 inches.

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Do you have a link for the data you posted? Thanks, again.

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Sorry I forgot to provide a link. I was on the Amite Basin Commission website (which sucks BTW) when I found it. I'll try to find it again.