****, that sucks. Getting flooded is the worst, and most aren't insured for it either. I was in an ElCamino with mother and brother during a flood in Enid OK as a kid. We floated for two blocks before the ass end sank deep enough to get traction to drive out and onto the median. Living near the water is nice 95% of the time but I'll never do it.
Hope your family and friends up there got out okay, this country has cut so many emergency response personnel it's no wonder there aren't enough to cover the area.