Current standards that govern how and where developers and residents can build are mostly sufficient, they say.
Those include retrofitting old drainage, widening bayous and building more ponds to temporarily store floodwater.A month after the Tax Day flood, another mega-storm hit the city, dumping well over a foot of rain on parts of Harris County, home to Houston, in 24 hours.The area's history is punctuated by such major back-to-back storms, but many residents say they are becoming more frequent and severe, and scientists agree. Scientists, other experts and federal officials say Houston's explosive growth is largely to blame."I'm too old to go through this again," Hammond said. For Louise Hansen, the story has been the same every time she's flooded: The water starts to creep into her house in the middle of the night. Three times in less than 10 years — for a home that's not in any floodplain identified by the Federal Emergency Management Agency.In 2009 — the first time her west Houston home flooded after she moved into it about a decade earlier — she figured it was an anomaly. "It's actually paralyzed me," said Hansen, who grew up in the area and is now selling her house just for the lot value.