Guadalupe River above Comal River at New Braunfels

1. 33.00 ftDisastrous, life threatening flooding reaches many homes in New Braunfels. All roads, streets and bridges in the flood plain below Canyon Dam to below Seguin are severely flooded and dangerous. RV and mobile home parks below New Braunfels are inundated. Camping areas along River Road below Canyon Dam will be under more than 25 feet of water.
2. 29.00 ftDisastrous life threatening flooding has the potential to drown people in the flood plain below Canyon Dam to below Seguin. Recreational camps along River Road below Canyon Dam flood severely. River Road is impassable. Visitors should evacuate on foot away from the river. Hundreds of homes in New Braunfels, Treasure Island and Seguin flood severely with some homes washing downstream.
3. 25.00 ftDisastrous life threatening flooding occurs below Canyon Dam to below Seguin. Roads near the river flood severely and are extremely dangerous to motorists. Campgrounds along River Road flood. Much of River Road is impassable and extremely dangerous for auto traffic. Visitors should not evacuate in cars on River Road. Evacuate on foot directly away from the river up canyon walls. Lowest homes in New Braunfels flood severely.
4. 21.00 ftMajor flooding puts 4 feet of water over the Common Street bridge. River Road upstream and adjoining campgrounds are severely flooded and extremely dangerous. Lowest homes in New Braunfels are threatened. The bridge at Gruene is under more than 15 feet of water.
5. 17.00 ftThe Common Street bridge floor over the Guadalupe River floods. Lowest homes are threatened. Much of River Road floods. Sleeping campers, autos and gear on the Guadalupe River banks can wash downstream.
6. 14.00 ftMajor lowland flooding threatens lowest homes. Numerous roads, streets and low bridges are flooded. River Road and camping areas upstream are severely flooded and extremely dangerous.
7. 12.50 ftSeveral sections of River Road flood. Autos, gear and sleeping campers can wash downstream from low banks adjacent to the river. Flow is well into the flood plain through New Braunfels.
8. 10.00 ftModerate lowland floodng closes several sections of River Road. Campers autos and equipment along the river can be washed downstream.
9. 7.00 ftMinor lowland flooding reaches the lowest sections of River Road above New Braunfels threatening sleeping campers, autos and gear on low areas near and above Gruene. The bridge on Gruene Road becomes flooded and impassable.
10. 6.00 ftMinor lowland flooding reaches the lower portions of campsites along River Road. Water reaches the bridge floor at Gruene Road.
11. 5.00 ftFlow exceeds lowest banks.

Chance of flooding, September to November

The three-month chances are the River Forecast Centers’ long-range flood outlook, issued August 28, 2026.

Most recent crests

• October 14, 2021: 12.69 ft
• October 30, 2015: 22.52 ft
• June 9, 2010: 27.26 ft
• November 22, 2004: 16.57 ft
• July 6, 2002: 28.95 ft
• October 17, 1998: 35.57 ft
• May 30, 1995: 7.34 ft
• May 5, 1993: 11.82 ft
• March 4, 1992: 9.77 ft
• June 25, 1987: 7.35 ft

• UpstreamGuadalupe River at 3rd Crossing nr Sattler
• DownstreamGuadalupe River at Comal
• Comal River at New Braunfels
• Dry Comal at Loop 337
• Bear Creek at FM 2722 nr Sattler
• Guadalupe River at Sattler
• Guadalupe River at Canyon Lake
• Geronimo Creek at Seguin 2NE

Forecasts by the West Gulf River Forecast Center. Forecasts are issued routinely year-round. River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service. Streamflow and the daily record from the U.S. Geological Survey.