As previously mentioned, let the pros deal with the immediate work. The best thing would be to coordinate with relief orgs like
Cajun Navy or
Samaritan's Purse. Usually, they come in after the dust has settled a bit. There will be plenty of work to do and overlanding rigs can still be utilized. The biggest needs will be supplies and labor for demo-ing, mold-remediation, and cleaning up.
Years ago, I was part of a team from my church that went to Houston for hurricane Harvey relief, and this was a few weeks after the fact, but plenty of work to do. I remember neighborhoods with mountains of debris from water damage mitigation. Cajun Navy was there as were several other relief orgs. Neighborhood streets were crowded with vehicles on both sides with piles of debris.
We nicked the bin with the box truck...
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Actually, Cajun Navy may have been there before the water receded, but there's plenty of need and work to be done well after the water recedes.