A hydrologist explains why Texas Hill Country is known as Flash Flood Alley and how its geography and geology can lead to ...

Texas Hill Country is known for its landscapes, where shallow rivers wind among hills and through rugged valleys. That geography also makes it one of the deadliest places in the U.S. for flash ...

Maps show how heavy rainfall and rocky terrain helped create the devastating Texas floods that have killed more than 120 ...

When floodwaters tore through the Texas Hill Country on July Fourth weekend, killing more than 100 people — including campers ...

A hydrologist and civil engineer explain why portions of southern Texas — known as Flash Flood Alley — is so prone to such ...

A perfect storm of a slow-moving pocket of moist air, parched terrain and a hilly area prone to flash flooding unleashed ...