Watershed Summary + more
Current Conditions + more
J-17 Well 660.7 msl (-0.2)
Guadalupe @ Spring Branch 86 cfs (-2)
Canyon Reservoir 909.03 msl (+0.03)
Guadalupe @ Sattler 150 cfs (+0)
Comal Springs 303 cfs (+4)
San Marcos Springs 344 cfs (-3)
Guadalupe @ Gonzales 1650 cfs (-250)
Guadalupe @ Victoria 2160 cfs (-20)
Coleto Reservoir 96.80 msl (+0.00)
Guadalupe @ Tivoli 1150 cfs (-560)
(+/-0.00) - indicates change in 24 hours.
Sources of Flow at Victoria
Canyon Release 6.94%
Comal Springs 14.03%
San Marcos Springs 15.93%
Natural Base Flow 63.10%
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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