As a result of recent rains, the Guadalupe and San Marcos Rivers remain in flooding conditions.

Only professional guides and outfitters should access the rivers until further notice.


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Watershed Summary + more
Current Conditions + more
J-17 Well 670.3 msl (-1.0)
Guadalupe @ Spring Branch 912 cfs (-50)
Canyon Reservoir 909.85 msl (-0.58)
Guadalupe @ Sattler 3350 cfs (+0)
Comal Springs 355 cfs (+126)
San Marcos Springs 344 cfs (-3)
Guadalupe @ Gonzales 6150 cfs (+590)
Guadalupe @ Victoria 5840 cfs (-680)
Coleto Reservoir 98.43 msl (+0.01)
Guadalupe @ Tivoli 2340 cfs (-290)
(+/-0.00) - indicates change in 24 hours.
Sources of Flow at Victoria
Canyon Release 57.36%
Comal Springs 6.08%
San Marcos Springs 5.89%
Natural Base Flow 30.67%
Percentages reflect sources. Losses and diversions not included.
Last 28 days at:

Preservation Matters

The Guadalupe-Blanco River Trust was founded in 2001 to conserve land in the Guadalupe River Watershed.

San Antonio Bay Foundation

Founded in 2008 to protect and preserve the Bay and Estuary at the end of the Guadalupe River Basin.

Canyon Lake Gorge

Within days following the Flood of 2002, the floodwaters carved a gorge into the landscape below the Canyon Lake Spillway.

Guadalupe River Foundation

Formed to establish a system for funding construction, operation and maintenance of environmental learning centers and programs.

©1998-2015 Guadalupe-Blanco River Authority

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