Review the Sattler flow, water temperatures, and weather to help protect trout and plan your trip.
This reading reflects the Canyon Lake dam release and is the main flow to watch for fishing below the dam.
Gage height 5.04 ft • Source USGS
Wind S 8 mph • Rain 20% • Humidity 61%
FRI 94° / 75°
Partly cloudy
SAT 91° / 73°
PM storms
SUN 93° / 74°
Mostly sunny
Water temperature directly affects a trout’s ability to breathe, recover, and survive after being caught. Checking the closest downstream sensor—and changing your plans when the water is too warm—helps protect the Guadalupe’s trout population so more anglers can enjoy trout fishing for years to come.
GRTU recommends catch-and-release fishing. Handle trout gently, keep them wet, and release them promptly so they can recover and more anglers have the opportunity to catch them.
Fish with care. Land trout quickly, keep them wet, and watch for signs of stress.
Fish early and limit your time. Play fish quickly and stop if the temperature keeps rising.
Give trout a break. Choose cooler water or target a warm-water species instead.
Check the downstream sensors before fishing. Conditions can change significantly across the river.
Use Sattler for the release below Canyon Lake. The upstream gauges help explain what is flowing into the lake.
PAY ATTENTION TO SATTLER. Comfort and Spring Branch are above Canyon Lake. They show inflow conditions—not the Canyon Lake release anglers experience below the dam.
This reading is from well above Canyon Lake. It helps explain the water entering the reservoir, not the flow below the dam.
This gauge is closer to Canyon Lake but still upstream. Use it to understand inflow—not fishing flow below the dam.
Lake level and rainfall help explain reservoir conditions. The Sattler gauge remains the reading to use for fishing below Canyon Lake.