LAST UPDATE | 6 Jul

THE DEATH TOLL from the devastating flooding in Texas has risen again as rescuers continue to search for 11 missing campers and a camp worker.

Dozens of people have been killed since raging floodwaters slammed into central Texas on Friday.

The death toll rose to nearly 70 today after searchers found more bodies in the hardest-hit Kerr County. The victims include children who were camping along the banks of the Guadalupe River.

Officials have said they will not stop searching until every person is found.

Besides the 59 dead in Kerr County — 38 adults and 21 children — additional deaths were reported in Travis, Burnet and Kendall counties.

Rescuers dealt with broken trees, overturned cars and muck-filled debris in a difficult task to find survivors.

Authorities still have not said how many people are missing beyond the children from Camp Mystic, a Christian summer camp where most of the dead were recovered.

With each passing hour, the outlook became more bleak. Volunteers and some families of the missing who drove to the disaster zone began searching the riverbanks despite being asked not to do so.

Authorities faced growing questions about whether enough warnings were issued in an area vulnerable to flooding and whether enough preparations were made.

The destructive fast-moving waters rose 26 feet (eight metres) in just 45 minutes before daybreak Friday, washing away homes and vehicles.

The danger was not over as torrential rains continued pounding communities outside San Antonio on Saturday and flash flood warnings and watches remained in effect.

People climb over debris on a bridge atop the Guadalupe River. Julio Cortez / AP Julio Cortez / AP / AP

Searchers used helicopters, boats and drones to look for victims and to rescue stranded people in trees and from camps isolated by washed-out roads.

“We will not stop until we find everyone who is missing,” Nim Kidd, chief of Texas Department of Emergency Management, said at a press conference on Saturday afternoon.

In Ingram, Erin Burgess woke to thunder and rain in the middle of the night Friday.

Just 20 minutes later, water was pouring into her home, she said. She described an agonizing hour clinging to a tree with her teenage son.

She outlined what happened:

My son and I floated to a tree where we hung onto it, and my boyfriend and my dog floated away. He was lost for a while, but we found them.

Authorities were coming under growing scrutiny Saturday over whether the camps and residents in places long vulnerable to flooding received proper warning and whether enough preparations were made.

The hills along the Guadalupe River in central Texas are dotted with century-old youth camps and campgrounds where generations of families have come to swim and enjoy the outdoors.

The area is especially popular around the July Fourth holiday, making it more difficult to know how many are missing.

“We don’t even want to begin to estimate at this time,” said City Manager Dalton Rice said on Saturday morning.

Some 27 children were among the missing from Camp Mystic, a Christian summer camp along the river, he said.

“The camp was completely destroyed,” said Elinor Lester, 13, one of hundreds of campers. “A helicopter landed and started taking people away. It was really scary.”

A raging storm fuelled by incredible amounts of moisture woke up her cabin just after midnight Friday, and when rescuers arrived, they tied a rope for the girls to hold as they walked across a bridge with water whipping around their legs, she said.

Frantic parents and families posted photos of missing loved ones and pleas for information.

On Saturday, the camp was mostly deserted.

Helicopters roared above as a few people looked at the damage, including a pickup vehicle tossed onto its side and a building missing its entire front wall.

Weather warnings

The flooding in the middle of the night caught many residents, campers and officials by surprise in the Hill Country, which sits northwest of San Antonio.

AccuWeather said the private forecasting company and the National Weather Service sent warnings about potential flash flooding hours before the devastation.

“These warnings should have provided officials with ample time to evacuate camps such as Camp Mystic and get people to safety,” AccuWeather said in a statement that called the Hill Country one of the most flash-flood-prone areas of the US because of its terrain and many water crossings.

Officials defended their actions while saying they had not expected such an intense downpour that was the equivalent of months’ worth of rain for the area.

One National Weather Service forecast earlier in the week “did not predict the amount of rain that we saw”, said Nim Kidd, chief of the Texas Division of Emergency Management.

One reunification centre at an elementary school was mostly quiet Saturday after taking in hundreds of evacuees the day before.

People reunited at a community centre after flooding in Texas. Alamy Stock Photo Alamy Stock Photo

“We still have people coming here looking for their loved ones. We’ve had a little success, but not much,” said Bobby Templeton, superintendent of Ingram Independent School District.

President Donald Trump said Saturday that Homeland Security Secretary Kristi Noem was travelling to Texas and his administration was working with officials on the ground.

“Melania and I are praying for all of the families impacted by this horrible tragedy,” Mr Trump said in a statement on his social media network.