Frantic search for survivors in Texas flash flood continues after officials confirm death toll has now risen to 82

Officials have provided an update on those still missing following the unexpected flash floods in Texas.

Authorities have continued rescue and search efforts in Texas since Friday (July 4) as many were expecting a day of celebration for Independence Day.

While many communities were impacted, Kerr County was one of the areas most severely affected by the devastating natural disaster.

Authorities have said one month’s worth of heavy rain fell in a matter of hours, leading to the Guadalupe River rising to the dangerous level of 26 feet. This led to a state of emergency being declared in several counties.

Late on Sunday (July 6), officials confirmed that the death toll had risen to 82 and many people, including children from a summer camp based just outside of Kerrville, are still missing.

What caused the Texas flash floods?

While Kerr County Judge Rob Kelly has said that the tragedy of this magnitude was unforeseen, due to the heavy rainfall, experts have explained why the Guadalupe River rose so quickly.

The heavy rain caused the Guadalupe River to overflow (RONALDO SCHEMIDT/AFP via Getty Images)

On Friday, Kerrville City Manager Dalton Rice said: "When you look at the headwaters of the Guadalupe... there's a north and a south fork.

"Since 1987, under normal conditions, if you can call it that, you'll hit water in one of those areas, and those two forks will converge into the Guadalupe, which comes through the city of Kerrville."

He continued: "This rain event sat on top of that and dumped more rain than what was forecasted on both of those forks.

"When we got the report, it was about 7 feet or so on the south fork, and within a matter of minutes it was up to 29 feet, and all of that converged at Guadalupe."

What areas have been affected?

While the entirety of the devastation is still not known, a report from CNN confirmed the location of those deceased in an update on Sunday night.

Of the 82 confirmed deceased, 68 were in Kerr County, six in Travis County, three in Burnet County, two in Kendall County, two in Williamson County and one in Tom Green County.

Among those deceased in Kerr County are 40 adults and 28 children, according to Sheriff Larry Leitha.

Rescue efforts have been continuous since the floods began on July 4 (Eric Vryn/Getty Images)

Camp Mystic missing children

One of the worst situations to come from the unexpected floods is the impact on summer Christian camp Camp Mystic.

The camp, set up in 1926, is for girls above the second grade to build their confidence and independence.

It has been left without WiFi, power and water following the floods.

An estimated 25 children have been feared missing from the camp, with some of them confirmed among the deceased.

Jane Ragsdale, the camp director of Heart O'Hills in Kerr County, is one of those to have tragically lost her life from the floods.

"We are mourning the loss of a woman who influenced countless lives and was the definition of strong and powerful," a statement from the camp said.

The mother of the missing Camp Mystic member Janie Hunt, nine, has also confirmed to CNN that her daughter had died because of the floods.

Search and rescue operations are ongoing.