Guadalupe River near Spring Branch, TX
River level and flood forecast · Comal County
Normal2.4 ftas of Mon 2 PM
The river is 27.6 ft below flood stage (30 ft).
Forecast to hold near 2.4 ft through Sat, Oct 17, 7 AM.
Flow: 98 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 8:11 AM. Forecasts change as rain falls and as upstream water arrives.
Flood stages
| Major flood stage | 39 ft |
| Moderate flood stage | 36 ft |
| Flood stage | 30 ft |
| Action stage | 25 ft |
| Record crest (August 3, 1869) | 53 ft |
What floods at each level
From the National Weather Service, highest first.
- 45 ftMajor flooding rises to the USGS gauge house at FM 311. Several homes are cut off above Spring Branch and two homes flood. Approaches to the Highway 281 bridge flood closing the highway. Picnic facilities at Guadalupe River State Park are flooded. Parks and facilities downstream at Canyon Lake are inundated.
- 43 ftMajor flooding reaches several lowest homes below Comfort to Canyon Lake. Numerous roads and bridges are flooded and dangerous. Lowest facilities in Guadalupe State Park are severely damaged. Parks, docks and roads around Canyon Lake are flooded and damaged.
- 39 ftMajor flooding reaches secondary roads and low bridges near the river making them extremely dangerous to motorists. The lowest residences flood from Kendall County to Canyon Lake. Picnic and camping facilities in Guadalupe River State Park upstream are severely flooded. Roads, marinas, and many parks and facilities at Canyon Lake flood.
- 36 ftModerate lowland flooding reaches secondary roads and low bridges in the flood plain. Recreationists should evacuate the river banks because of dangerous turbulent flow. Low sections of Guadalupe River State Park have tables, trash cans, and equipment damaged. Lowest homes in Kendall County to Canyon Lake flood.
- 30 ftMinor lowland flooding rises into the flood plain at Guadalupe River State Park damaging tables, trash cans and camping equipment. Swimming and any recreation in the river is extremely dangerous with turbulence, trees and trash in the water.
- 28 ftMinor lowland flooding extends into lowest areas of Guadalupe River State Park. Swimming, tubing, and canoeing above Guadalupe River State Park to Canyon Lake is dangerous except with commercial outfitters.
- 25 ftFlow extends over lowest sections of banks. Turbulent flow is very dangerous to tubers and swimmers above Guadalupe River State Park except with commercial outfitters.
- 23 ftTurbulent flow makes swimming and tubing dangerous above Guadalupe River State Park to Canyon Lake. Lowest areas of Guadalupe River State Park are flooded.
- 19 ftTurbulent flow makes swimming and tubing dangerous above Guadalupe River State Park to Canyon Lake.
- 15 ftThe Guadalupe river is dangerous to swimmers, tubers and canoeists above Guadalupe River State Park to Canyon Lake, except with commercial outfitters.
Highest crests on record
- 53 ft — August 3, 1869
- 49 ft — July 1, 1900
- 45.25 ft — August 3, 1978
- 45.12 ft — June 22, 1997
- 43.75 ft — July 3, 2002
Recent crests: 36.75 ft (July 17, 2026) · 30.03 ft (July 5, 2025) · 25.56 ft (May 30, 2016) · 29.98 ft (October 30, 2015) · 34.5 ft (May 24, 2015)
Up and down the river, and nearby
- UpstreamGuadalupe River at FM474 near Bergheim, TX
- Cibolo Creek at Smithson Valley Rd nr Bulverde, TX
- Bear Creek at FM 2722 nr Sattler, TX
- Cibolo Creek at Specht Road near Bulverde, TX
- Little Blanco River at FM32 near Fischer, TX
- Guadalupe River at Sattler, TX
- Guadalupe River at 3rd Crossing nr Sattler, TX
- Blanco River at Fischer Store Rd near Fischer, TX
- West Elm Creek at Encino Rio at San Antonio, TX
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (SRGT2); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.