Cities and counties can strengthen their defenses — even on tight budgets — with smarter maps, stronger codes and regional coordination, a flood expert says.

Former Kerr County Commissioner Tom Moser said in 2016 their flood warning system was "marginal at best." Still, the county couldn't get grants for sirens.

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

More than an hour passed between Camp Mystic receiving a severe flood warning and a decision to evacuate young campers asleep in cabins by the Guadalupe River.

Additional rounds of heavy rains lasting into Tuesday could produce more dangerous flooding, especially in places already saturated.

Federal forecasters issued their first flood warning at 1:14 a.m. on July 4. Local officials haven’t shed light on when they saw the warnings.

The search for missing bodies is ongoing along Texas’ Guadalupe River after catastrophic and deadly flooding killed more than 100 people following a torrential downpour early Friday morning.

But meteorologists say the official National Weather Service forecast gave ample notice for people to get themselves – and others – out of harm’s way. State and local officials say nothing could have prepared them for the Guadalupe River to rise as quickly as it did.