Good evening. I'm John Yang. Tonight, the desperate search for the missing after deadly flash floods in Texas has become a race against time.

The official death toll has climbed to at least 70 and 11 girls from a Christian camp are still unaccounted for.

With each passing hour, the chances of finding survivors dwindles. Allie Rogan has our report.

In parts of central Texas, the floodwaters have receded, but grief hangs in the air as the search

for the missing girls from Camp Mystic widens. Inside their deserted cabins, muddied cots,

and overturned tables lie scattered.

Saturday evening, Texas Governor Greg Abbott visited the campsite, vowing to work around the clock to find the girls and bring them home safely.

In nearby curvil, downed trees and destroyed homes littered neighborhoods along the Guadalupe River.

On Friday, the river surged past 29 feet before the gauge failed, the second highest level ever recorded.

Ground crews gathered to sift through debris and search for survivors today, while rescue

teams in helicopters airlifted as many people as they could.

For many, their only escape route was to climb onto their rooftops.

Meanwhile, locals like Arnaldo Payne are pitching in to help where they can.

My dog, he's like a German shepherd, so like I want to see if he can find someone, you know, help out some families.

The National Weather Service first detected floods in the region late Thursday night.

The RV park right at the end of my granny's road that were completely flooded.

But some people in the area said the alerts didn't reach them in time. No warnings at all. They came hours later, which was the most devastating card.

We got the warnings on our phones hours later, hours later.

Curval city officials were pressed today on why early warnings from the Texas

Division of Emergency Management didn't reach the area camps and force evacuations.

That is a great question, but again, we want to make sure that we continue to focus.

We still have 11 missing children that we want to get reunited with our families.

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