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

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

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

Texas Hill Country is known for its landscapes, where shallow rivers wind among hills and through rugged valleys. That ...

This is a semi-arid area with soils that don’t soak up much water, so the water sheets off quickly and the shallow creeks can rise fast.

A rare Triassic fossil site reveals North America's oldest known pterosaur, Eotephradactylus mcintireae, in what was once a ...

At least 119 people are dead and 173 people are still missing after devastating flash floods in Central Texas.

The latest death count exceeded 100 people in an area where flooding happens frequently. Of that death toll, more than two ...

US President Donald Trump describes the catastrophic Texas floods as a one-in-100-year event — a disaster "nobody expected".