Betty Matteson’s four children, nine grandchildren and numerous great-grandchildren have squeezed into her Texas Hill Country home countless times since 1968.

Here's what to know about the deadly flooding, the colossal weather system that drove it and ongoing efforts to identify victims.

At least 129 people are dead from the devastating flooding in the Texas Hill Country.Kerr County was hit the hardest, with at least 103 deaths, including 36 children. President Donald Trump signed a disaster declaration for the county and the Federal Emergency Management Agency is on the ground there.

On the night the deadly floodwaters raged down the Guadalupe River in Texas, the National Weather Service forecast office in Austin/San Antonio was missing a key member of its team: the warning coordination meteorologist,

As the National Weather Service (NWS) issued fresh flash flood warnings for Texas on Sunday, emergency crews were forced to suspend their operations

The Texas Hill Country has been notorious for flash floods caused by the Guadalupe River. Here's why the area is called "Flash Flood Alley."

The organizations working together to help the flood victims said that 'no additional in-kind donations (clothing, food, supplies) are needed in Kerrville.' They said the best way to help is with monetary donations.

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