Hwy 41 runs from Pearl River LA up to Bush LA and depending where it is located east of that Highway would determine the answer to your questions? My email is email@example.com.
1) Flood zone
2) Is it all one parcel?
3) What town, and is it in city limits?
4) One then has to consider what is happening in this specific town, and then
determine the best use of the property.
You can then go to an appraiser to get a better handle on what to do with this property.