CURRENT CONTEXT : A powerful flash flood triggered by ~20 in (508 mm) of rain caused the Guadalupe River to rise by up to 29 ft in under 45 minutes.

 ABOUT THE GUADALUPE RIVER:

• Source: Springs forming North & South Forks in Kerr County, Texas.
• Course: Flows to San Antonio Bay → Gulf of Mexico.
• Basin Features: Canyon Reservoir, Edwards Aquifer in Balcones Fault zone.
• Flash Flood Alley: Steep terrain, shallow limestone soils — rapidly converts rain into flash flood.
• Historical Floods: 1978 (Storm Amelia), 1987 (Comfort camp disaster), with the region being flash-flood prone.