This part of Texas Hill Country is known for flash floods. Why were so many people caught off guard when the river turned violent?

Young campers and a dad saving his family were among the dozens killed in the historic flash floods that tore through central Texas over the holiday weekend.

Torrential rain flooded creeks, streams and the Guadalupe River, where the water swelled more than 26 feet in 45 minutes.

Bubble Inn saw generations of 8-year-olds enter as strangers and emerge as confident young ladies equipped with new skills from the great outdoors and lifelong friends – bonds that would one day prove vital in the face of unfathomable tragedy.

The Houston Texans were the first to announce their donations on Saturday, July 5, with more coming throughout the week. The Dallas Cowboys and the NFL Foundation joined the Texans on Sunday, July 6, with each contributing $500,000 in a $1.5 million total donation.

Records released Tuesday show Camp Mystic met state regulations for disaster procedures, but details of the plan remain unclear.

Follow for live updates in the Texas flooding as the death toll rises to 120, as rescue operations start to shift to recovery phase

Experts suggested that more data and education are needed as Texas and the rest of the country build in known flood plains.