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This probabilistic forecast is issued by the West Gulf River Forecast Center.
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About this graph
Forecasts for the Guadalupe River below Comal are issued routinely year-round.
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Upstream Gauge - above Comal River at New Braunfels Upstream Gauge Downstream Gauge Downstream Gauge - at Seguin
Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 20
Moderate Flood Stage: 14
Flood Stage: 13
Action Stage: 13
Low Stage (in feet): -9999

Historic Crests
(1) 39.50 ft on 08/08/1869
(2) 39.50 ft on 12/13/1913
(3) 38.54 ft on 10/17/1998
(4) 36.55 ft on 05/11/1972
(5) 35.00 ft on 06/15/1935
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(P): Preliminary values subject to further review.

Recent Crests
(1) 15.40 ft on 10/14/2021
(2) 14.33 ft on 06/01/2016
(3) 24.95 ft on 10/30/2015
(4) 29.65 ft on 06/09/2010
(5) 22.17 ft on 11/22/2004
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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Gauge LocationGauge Map Marker
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
38 Life threatening, extremely dangerous flooding below Canyon Dam to below Gonzales causes widespread residential and commercial flooding with the potential to drown people. Sleeping campers, autos and any gear along river road below Canyon Dam to above New Braunfels can be washed downstream.
35 Widespread disastrous flooding washes homes downstream in New Braunfels and Seguin. Lowest homes along Lakes Dunlap and McQueeney will flood severely. Flooding is life threatening along river road above New Braunfels. Many secondary and primary roads are impassable and people are cut off.
32 The Guadalupe River in New Braunfels is life threatening with widespread residential flooding. There is very dangerous flooding of camps and facilities below Canyon Dam to below Seguin. River Road is under tens of feet of water in most areas, and flows are life threatening to campers along the river.
28 Disastrous flooding reaches many lowest homes in New Braunfels downstream to Seguin. River recreational areas are severely flooded and life threatening below Canyon Dam to Seguin. All roads near the river will become life threatening as the flood wave moves downstream.
24 Major flooding is extremely dangerous upstream along River Road to below New Braunfels. Homes and businesses flood in New Braunfels. RV parks and homes near the river on Lake Dunlap are threatened. Roads near the river below Canyon Dam to Lake Dunlap are very dangerous to motorists.
20 Major flooding reaches lowest homes in New Braunfels and downstream near Lakes Dunlap and McQueeney. River Road above New Braunfels is severely flooded and impassable in most areas. Sleeping campers, autos and gear on the banks can wash downstream. This is a life threatening situation.
17 River road is closed in several places between New Braunfels and Canyon Dam. Fast moving flow washes autos and gear on the banks downstream. Lowest homes in New Braunfels are threatened. The Common Street bridge in New Braunfels floods and many roads, streets, and bridges near the river are very dangerous to motorists. Lowest homes below I-35 near Lakes Dunlap and McQueeney are threatened.
15 Moderate flooding threatens lowest homes in the Guadalupe river flood plain. Secondary roads, streets, and low bridges are flooded and dangerous. River Road above New Braunfels is widely flooded and very dangerous to motorists and campers.
14 Moderate lowland flooding closes several roads, streets and businesses in New Braunfels. Upstream River Road is extremely dangerous.
13 Minor lowland flooding extends into the flood plain closing lowest roads and crossings near the river.

Other Real-time and/or Archive Data Sources:

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The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Austin/San Antonio Weather Forecast Office
2090 Airport Road
New Braunfels, TX 78130
(830) 629-0130
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Page last modified: 2-Nov-2020 7:29 PM
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