Wow, what a mess. Yet if it's not as bad as the others, I guess that's one consoling thing right? Did your SIL's house have a lot of water damage or any structural damage?
Btw is that area an area in which you're advised to buy flood insurance? Like in CA you are not forced to BUT encouraged to buy earthquake insurance (only it cost's an arm and a leg with a huge deductible.)
TIS
"Mankind must put an end to war before war puts an end to mankind. War will exist until that distant day when the conscientious objector enjoys the same reputation and prestige that the warrior does today." JFK