This forecast shows landfall just below Galveston Island.
There is a nuclear plant near Freeport, TX.
Also to be taken into consideration. Houston is inland and above sea-level. Any flooding in Houston would drain nicely after the storm passes and with low tide.
Galveston Island has seen a jump in development lately, presuming the legalization of gambling. Lots of casino-looking buildings have been built on the Seawall.
The damage from a hurricane, of course, would hurt Galveston Island and Bolivar the worst.
And if it is a large hurricane, the Mainland would get flooded. Consider all of the residential building which has spring up in the Kemah, Clear Lake City area, which has never been tested before by a hurricane.
Further down the Texas Gulf Coast from Galveston Island is Port Lavaca, which took a direct hit by Hurrican Carla in 1959.
Ever hear of Alicia? Wiped out my sister in Clear Lake City back in the 80's.