I was stuck under Hurricane Harvey for four days and then Wharton flooded as the rainwater came down the Colorado River. It just so happened that I found the last loaf of bread in town at the convenience store a few blocks away. The store shelves were half-empty for the next week since the truck routes from San Antonio through Houston were under high water. No bread, tortillas, pastries, milk, eggs or fresh produce for about a seven day period before things began to improve.
There was also problems with cell phone coverage and I was trying to wire money to my brother in San Antonio, but Western Union was also down. I had a barrage of about a dozen hate voice mails from my brother in about a 3 hour period, but I was able to send out an email to my sister in Atlanta who got in contact with him and let him know it wasn't my fault. He did have a credit card, so he wasn't left helpless and if he thought about going to a bank to see a teller he could have gotten cash.
I hope that you don't have to face any problems with the drainage from the storm.