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Upper Guadalupe & Canyon Lake flood tracker

Flood water takes hours to travel the ~95 river miles from the Hunt headwaters to Canyon Lake. This page tracks the wave down the basin, station by station, then pairs the official NWS inflow forecast with live lake and dam-release data, so you can see what’s coming before it arrives.

Map of the Hunt to Canyon Lake flood corridor: the Guadalupe River's true channel from Hunt through Kerrville, Center Point, Comfort, Bergheim, and Spring Branch into Canyon Lake, with river-mile distances between stations and the glowing tributary network that feeds the flood.
Every creek that feeds the flood, mapped from real USGS hydrography. The glowing web is the whole watershed draining to the main stem · tap to open full-size.

Rain on the basin

USGS rain gauges along the upper basin, what fell is what’s coming.

Station6 hr12 hr24 hrStorm
Hunt…………
Ingram (Johnson Ck)…………
Comfort (Cypress Ck)…………
Bergheim (FM 474)…………
Canyon Dam…………

Inches of rain at the gage itself (USGS 15-minute increments) · Storm total = the whole event so far (it only grows) · “—” = no sensor data. Point totals at these five sensors; a storm can dump more between and around stations than on them.

Liveauto-refreshes every 5 min

The Wave

Tracked station by station down the Guadalupe

Live USGS gauges follow the flood crest from the Hunt headwaters to Canyon Lake, so you can see it coming before it arrives.

6stations
~95river miles
Hunt → Canyon Lake
Hunt
Headwaters, the earliest signal
—cfs
→ Steady
prior 3-yr high315,000 cfs· Jul 4, 2025, 5:05 AM
10 river miles
Kerrville
Upper basin
—cfs
→ Steady
prior 3-yr high298,000 cfs· Jul 4, 2025, 6:45 AM
6 river miles
Center Point
Between Kerrville and Comfort
—cfs
→ Steady
prior 3-yr high39.61 ft· Jul 4, 2025, 7:30 AM
17 river miles
Comfort
Upper basin, mid
—cfs
→ Steady
prior 3-yr high177,000 cfs· Jul 4, 2025, 11:00 AM
29 river miles
FM 474 (Bergheim)
Between Comfort and the lake
—cfs
→ Steady
prior 3-yr high111,000 cfs· Jul 4, 2025, 7:15 PM
32 river miles
Spring Branchlake inflow
Canyon Lake INFLOW, what the lake will receive
—cfs
→ Steady

The upstream flood spreads out and flattens as it travels down the canyon, so the inflow here reads lower than the gauges above it.

prior 3-yr high35,000 cfs· Jul 5, 2025, 4:15 AM

Canyon Lake inflow, the official forecast

NWS River Forecast Center hydrograph for the Guadalupe near Spring Branch (SRGT2), observed ■ and forecast ■ stage against the published flood categories.

Loading the NWS forecast hydrograph…

Canyon Lake & the dam

Canyon Lake rise

Loading the current lake level…

Lake level
—ft
conservation pool 909 ft
Flood pool used
—
of the 34 ft flood band
Inflow now
—cfs
Spring Branch gage
Dam release
—cfs
Sattler gage · River Road →
Loading lake data… · %full & storage: TWDB daily · flows: USGSBoat ramps & full tracker →

FloatTX informs, it is not the flood authority. Forecasts are the National Weather Service’s; dam operations are the U.S. Army Corps of Engineers’. In a flash flood, follow official warnings and local emergency guidance, not a dashboard.