The San Antonio River Authority maps and models floodplains, oversees flood infrastructure. They are gathering information on the areas and creeks that flooded Thursday so they can assess if changes need to be made.

"Developing in one part of the city can change the flood risk in another part of the city because of these drainage networks. All parts of cities are interconnected," explained Dr. Ali Mostafavi, a professor of Civil Engineering, Texas A&M University. "The drainage capacity is always behind the development."

This week in South Texas is expected to be much drier as a ridge of high atmospheric pressure moves into West Texas for a day or two.

“He survived it by jumping in the back of his truck,” said Pereles. Pereles says he understands driving into water is a dangerous situation, but for some of those he passed waiting to see the water recede, they should not have lost their lives.

SAN ANTONIO - 13 people died in the deadly flood that swept through San Antonio last week. The families of those 13 victims are coming to terms with their sudde

The review will include "independent engineering and expert evaluation," City Manager Erik Walsh said in an email to the mayor and City Council.