Gary, DeeAnn, Jake and Megan all lost their lives. Harley is still among the missing. Both families lived in Canyon Lake but have ties to the Houston and Mont Belvieu areas. Hutch and Beth Bryan, formerly of Houston, died in the Texas Hill Country flooding.

KERR COUNTY, Texas — A devastating scene unfolded in the Hill Country on the Fourth of July as dozens of people, including children, died after major flooding in multiple Texas counties. That number is expected to increase as search-and-rescue operations continue this weekend and beyond.

Several factors, both meteorological and geographical, created a nightmare recipe for flash flooding across the Texas Hill Country.

The Guadalupe River flooded on Friday, July 4, impacting cities across Kerr County including Kerrville, Hunt, Ingram, and more, killing at least 27 people . At least 27 children remain missing from Camp Mystic, an all-girls summer camp in Hunt.

Religion and the river are constant Kerr County touchstones. As residents lean on their faith, they grapple with their relationship to the water.

A hydrologist explains why the region is known as Flash Flood Alley and how its geography and geology can lead to heavy downpours and sudden, destructive floods.

Fatigue and frustration are growing among rescue workers who are ending another long day of searching for those who perished in last week's Hill Country flood disaster. Some volunteers involved in the search are even resorting to on-site IV injections to get through the hottest day yet in the Guadalupe River basin,

A National Weather Service advisory warned of another 2-4 inches of rain falling in the region − and isolated areas could see 9-12 inches.