HOUSTON (AP) — Rescuers answered hundreds of desperate calls for help Sunday as floodwaters from the remnants of Hurricane Harvey rose high enough to begin filling second-story homes, and authorities urged stranded families to seek refuge on their rooftops.
A fleet of helicopters, airboats and high-water vehicles confronted flooding so widespread that authorities had trouble pinpointing the worst areas. Rescuers got too many calls to respond to each one and had to prioritize life-and-death situations.
"It's heartbreaking," said Harris County sheriff's spokesman Jason Spencer.
Houston Mayor Sylvester Turner says emergency personnel have responded to more than 2,000 calls to 911 for rescues in the wake of Hurricane Harvey. He said priority was being given to life-threatening calls.
Turner also said at a news conference Sunday that he has ordered the downtown George R. Brown Convention Center opened as a shelter as floodwaters inundated much of the city.
Turner also urged people not to drive, as numerous streets and roadways in Houston, the nation's fourth largest city, were flooded Sunday.
The George R. Brown Convention Center has 1.8 million square feet of space.
Harris County Sheriff Ed Gonzalez used Twitter to field calls for assistance for those trapped inside homes, attics and vehicles. Among those seeking help was a woman who posted: "I have 2 children with me and the water is swallowing us up."
Officials urged people not to crawl into attics but to get on top of them. The Coast Guard advised people to wave sheets or towels to draw attention to themselves.
Police evacuated two apartment complexes overnight in the Greenspoint neighborhood, rescuing more than 50 children from rising water.
Houston Police Chief Art Acevedo stood in waist-high water during a livestream post on Twitter. "But it's Texas," he said. "We'll get through it."
Rainfall of more than 4 inches per hour resulted in water levels higher than in any recent floods and higher than during Tropical Storm Allison in June 2001, said Jeff Linder of flood control district in Harris County, which includes Houston.
Rescuers came by land, water and air.
In Friendswood near Houston, authorities asked people with flat-bottomed airboats or fuel for them to help rescue people, KPRC-TV in Houston reported Sunday morning.
In Houston, dump trucks and city buses were used to ferry residents to higher ground.
The Coast Guard, which received more than 300 requests for help, deployed five helicopters and asked for additional aircraft from New Orleans.
The director of the Federal Emergency Management Agency, Brock Long, said the government expected to conduct a "mass care mission" and predicted that the aftermath of the storm would require FEMA's involvement for years.
"This disaster's going to be a landmark event."
The rescues unfolded a day after the hurricane settled over the Texas coastline. It was blamed for killing at least two people and injuring up to 14.
Anxiety ran high throughout the region between Corpus Christi and Houston because some of the areas with the greatest hurricane damage were inaccessible to rescuers. And the forecast for days of steady rain threatened to inundate the region's flat landscape with as much as 40 inches (100 centimeters).
President Donald Trump tweeted Sunday morning that he would visit Texas.
"I will be going to Texas as soon as that trip can be made without causing disruption," the president posted on Twitter. "The focus must be life and safety."
In the island community of Port Aransas, population 3,800, officials were unable to fully survey the town because of "massive" damage. Police and heavy equipment had only made it into the northernmost street.
"I can tell you I have a very bad feeling and that's about it," said Mayor Charles Bujan, who had called for a mandatory evacuation but did not know how many heeded the order.
Some of the worst damage appeared to be in Rockport, a coastal city of about 10,000 that was directly in the storm's path. The mayor said his community took a blow "right on the nose" that left "widespread devastation," including homes, businesses and schools that were heavily damaged. Some structures were destroyed.
Rockport's roads were a mess of toppled power poles. A trailer blocked much of one major intersection. Wood framing from ripped-apart houses was strewn along Route 35 on the town's southern end.
Harvey's relentless wind tore the metal sides off the high school gym and twisted the steel door frame of its auditorium.
"We're still in the very infancy stage of getting this recovery started," said Aransas County spokesman Larry Sinclair.
One person was killed in Aransas County when in a fire at home during the storm, county Judge C.H. "Burt" Mills Jr. said.
Another person — a woman who tried to get out of her vehicle in high water — died in flooding in Harris County, where Houston is located, , though authorities had not confirmed a cause of death, said Gary Norman, a spokesman for the Houston emergency operations center.
As many as 14 people suffered minor injuries, including slips and falls, scrapes and a broken leg, Mills said.
About 300,000 customers were without power statewide. Gov. Greg Abbott said it would probably be several days before electricity is restored.
Meanwhile, the storm was barely moving. Rainfall totals varied across the region, with Galveston receiving around 8 inches (20 centimeters), Houston 11 (28 centimeters) and Aransas 10 (25 centimeters). Tiny Austwell got 15 inches (38 centimeters).
In Houston, authorities pleaded with people not to leave their homes as a flood emergency was declared.
"The streets are treacherous," Houston Mayor Sylvester Turner said.
Elsewhere in the storm's immediate aftermath, the Coast Guard had rescued 20 people from boats and barges in distress, said Capt. Tony Hahn, commander of the Corpus Christi sector.
The Corpus Christi port was closed with extensive damage. Because the city is the third-largest petrochemical port in the nation, the agency will be on the lookout for spills, Hahn said.
The fiercest hurricane to hit the U.S. in more than a decade came ashore late Friday about 30 miles (48 kilometers) northeast of Corpus Christi as a mammoth Category 4 storm with 130 mph (209 kph) winds.
Harvey weakened to a tropical storm by midday Saturday.
By 7 a.m. Sunday, Harvey was centered about 65 miles southeast of San Antonio, with maximum sustained winds of about 45 mph (72.42 kph), according to the National Hurricane Center, which described the flooding as "catastrophic."
Harvey came ashore as the fiercest hurricane to hit the U.S. in 13 years and the strongest to strike Texas since 1961's Hurricane Carla, the most powerful Texas hurricane on record.
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