The catastrophic Central Texas floods have claimed at least 121 lives and left 173 missing, as a report reveals that Kerr County officials were repeatedly denied state funding for an emergency flood warning system.

Over 12,000 volunteers have already assisted in Kerr County, according to the Texas Division of Emergency Management.

Recordings provided to CBS News showed first responders asking for an emergency alert to be sent, but dispatchers delayed because they needed special authorization.

In the days after the devastating flood that killed dozens in Central Texas, local officials have deflected direct questions about preparations and warnings in advance of the storm that struck July Fourth.

As the search for victims continues, county officials say "additional resources" are being deployed as the "mission efforts become more technical."

President Donald Trump travels to Texas on Friday amid growing questions about how local officials responded to the devastating floods, as well as questions about the federal response -- including FEMA's fate -- that he has so far avoided.

A stretch of chain-link fence along the Guadalupe River in the Texas town of Kerrville has become a focal point for the community's grief.

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.