I lived in Katy right off of the Fry Road turn off on the Katy Freeway, through several floods and the problem is that the water does not drain well and blocks access to the Katy Freeway (10). It's easy to get isolated. Same with the wildlife. In 1980 Hurricane Allen hit Corpus Christy Beach. The rain in Katy isolated us for just a few days and we were stuck, no way out without a boat. Hurricane Harvey was much worse in the west of Huston where Katy is located because it was almost a direct hit.
One of my neighbors from Katy is coming with his family to live with us until they can sort out what they're going to do. What the flooding didn't take the looters got. They backed up a pickup into his garage door and took everything, appliances, tool box, dirt bikes, the lot. Inside his home looked like a bomb went off, everything was thrown all over except for the stuff they took. The news is not covering the realities of the looting. There are shots being fired and 3 people in and around Katy have been shot and there's been a lot of dog bites. Anticipating looters is why a lot of people did not evacuate.