HOUSTON
(AP) — As more than a foot of rain deluged the nation's fourth-largest
city, inundating homes, shutting down major highways and leaving at
least five people dead, Houston's mayor said there was no immediate
solution.Heavy flooding has become nearly an annual rite of passage
in the practically sea-level city, where experts have long warned of the
potential for catastrophe.
"I regret anyone whose home is flooded
again," said Sylvester Turner, the city's mayor, on Monday. "There's
nothing I can say that's going to ease your frustration. We certainly
can't control the weather."
"A lot of rain coming in a very short period of time, there's nothing you can do," he added.
Flash
flooding and a 50 percent chance of more were possible Tuesday, a day
after some areas saw water levels approaching 20 inches. The National
Weather Service had the area under a flash flood watch through Wednesday
morning.
Scores of subdivisions were flooded and most schools
remained closed although the city itself was returning to normal.
Municipal offices reopened Tuesday and by midmorning, less than 10,000
CenterPoint Energy customers were without power, an improvement from 24
hours earlier when electricity outages topped 100,000. Houston's
Metropolitan Transit Authority resumed service and most highways within
the city were open.
Outside the city and into the suburbs of
northwest Harris County, runoff from Monday's rains forced creeks over
their banks and forced more people to evacuate their homes overnight.
"It's
going to have to trickle its way through the city of Houston and to
Galveston Bay," Francisco Sanchez, a county spokesman said.
In
addition to its location, Houston's "gumbo" soft soil, fast-growing
population and building boom that has turned empty pastures into housing
developments all over the city's suburbs and exurbs make it vulnerable
to high waters.
Harris County has seen a 30 percent jump in
population since 2000. Its surrounding counties have almost grown more
than 10 percent since 2000, according to the Greater Houston
Partnership, a business group.
Some of the resulting developments
include adequate greenspace for water runoff, but not all of them do,
said Philip Bedient, an engineering professor at Rice University.
"Could we have engineered our way out of this?" Bedient said. "Only if we started talking about alterations 35 or 40 years ago."
Samuel
Brody, director of the Environmental Planning & Sustainability
Research Unit at Texas A&M University, last year called Houston "the
No. 1 city in America to be injured and die in a flood."
Rainstorms
last year over Memorial Day weekend caused major flooding that required
authorities to rescue 20 people, most of them drivers, from high water.
Drivers abandoned at least 2,500 vehicles, and more than 1,000 homes
were damaged in the rain.
The year before, flash flooding in Houston and suburban counties left cars trapped on major highways.
Those
storms still pale in comparison to the devastation wreaked by Hurricane
Ike in 2008 and Tropical Storm Allison in 2001. Allison left behind $5
billion in damages and flooded parts of downtown and the Texas Medical
Center, which sits near the Brays Bayou, a key watershed.
Bedient
has worked with the Texas Medical Center on better preparing its
facilities for massive rainfall, including the use of a sophisticated
weather alert system that gives the medical center extra time to
activate gates and doors that block excess rainwater.
Improving
the monitoring of specific watersheds and flood-prone areas might give
affected residents the extra bit of time they need to save lives and
take protective measures.
"We can't solve this flood problem in Houston," Bedient said. "All we can do is a better job warning.
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