Muddy water

[ccm]

Hey guys,
I live in north Louisiana but fish the Dulac marsh several times a year and have been trying to set up a trip down but it appears the waters are very muddy from Isaac. It has been almost 3 weeks since Isaac came through and I expected the water to clear up much sooner than this. Is this normal? How long does it normally take for the water to clear up?

Thanks for the information.

ccm