The death toll from flooding in central Texas over the weekend has risen to 108, including 27 girls at a riverside camp, authorities have said.
Confirmed deaths in Kerr County rose to 87, with 10 Camp Mystic campers and one counsellor still missing, the sheriff's office reported.
At least 17 deaths have been recorded in several other nearby counties.
Emergency responders are still searching for dozens of missing people and face the prospect of more heavy rains and thunderstorms.
Officials expect the death toll to rise as search teams waded through mud-laden riverbanks and flew over the flood-stricken landscape amid a hope to find more survivors.
"This will be a rough week," Mayor Joe Herring Jr said at a briefing.
The vast majority of the victims died in Kerr County, where the Guadalupe River was transformed by pre-dawn torrential downpours into a raging torrent in less than an hour on Friday.
The waters tore through Camp Mystic, a nearly century-old Christian girls' retreat on the banks of the river.
"Our hearts are broken alongside our families that are enduring this unimaginable tragedy," the camp said in a statement.
Ten girls and a camp counsellor are still missing, officials said.
US Senator Ted Cruz told reporters that the death toll was continuing to rise.
"Texas is grieving right now - the pain, the shock of what has transpired these last few days has broken the heart of our state," Mr Cruz said.
"The children, little girls, who were lost at Camp Mystic, that's every parent's nightmare," he added.
Watch: Ted Cruz says death toll 'continuing to go up'
Richard "Dick" Eastland, 70, the co-owner and director of Camp Mystic, died trying to save the children at his camp during the flood, multiple media, including the Austin American-Statesman reported.
Mr Eastland and his wife Tweety Eastland have owned the camp since 1974, according to the camp's website.
"If he wasn't going to die of natural causes, this was the only other way, saving the girls that he so loved and cared for," Eastland's grandson, George Eastland, wrote on Instagram.
In Hill Country, where the worst flooding occurred, 50 to 100mm of more rain is expected to fall, with isolated areas getting up to 254mm of rain, said Allison Santorelli, a meteorologist with the National Weather Service's Weather Prediction Center in College Park, Maryland.
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Ms Santorelli said the potential new floods could be particularly dangerous because of the water-saturated soil and all the debris already in and around the river.
State emergency management officials had warned on Thursday, ahead of the July Fourth holiday, that parts of central Texas faced the possibility of flash floods based on National Weather Service forecasts.
Watch: Trump says he will 'probably' visit Texas on Friday
Mr Trump said yesterday that he would visit the disaster scene, probably on Friday.
He has previously outlined plans to scale back the federal government's role in responding to natural disasters, leaving states to shoulder more of the burden.
Some experts questioned whether cuts to the federal workforce by the Trump administration made it harder for officials to accurately predict the severity of the floods and issue appropriate warnings ahead of the storm.
Mr Trump's administration has overseen thousands of job cuts at the National Weather Service's parent agency, the National Oceanic and Atmospheric Administration, leaving many weather offices understaffed, former NOAA director Rick Spinrad said.
Mr Trump pushed back when asked yesterday if federal government cuts impeded the disaster response or left key job vacancies at the service.
"That water situation, that all is, and that was really the Biden setup," he said, referencing his Democratic predecessor, Joe Biden.
"But I wouldn't blame Biden for it, either. I would just say this is a 100-year catastrophe," he added.
Senate Democratic Leader Chuck Schumer asked a US government watchdog to investigate whether budget cuts contributed to any delays or inaccuracy in forecasting the floods.
Time lapse shows water levels in Llano River, Texas rapidly rise
