Waters · United States
Guadalupe River (Canyon Tailwater) fishing report
Updated Friday, 9 October 2026 · refreshed automatically through the day
The southernmost trout fishery in the United States exists only because cold water comes off the bottom of Canyon Lake. Stocked rainbows hold through winter and mostly die out each summer, so the season is genuinely finite.
Today's report: good (75/100)
Largemouth Bass is the most promising species on Guadalupe River (Canyon Tailwater) today. Water temperature is around 26.7°C and barometric pressure is falling. Gauge Guadalupe Rv nr Spring Branch, TX shows the water level falling (1 cm/24h).
Guadalupe River (Canyon Tailwater) water temperature and flow
- Discharge: 3.2 m³/s (113 cfs) — down 6% over 24 hours
- Level trend: falling (1 cm/24h)
Measured at gauge Guadalupe Rv nr Spring Branch, TX · reading 49 min ago. Published by the national hydrological service, not estimated by us.
Best time to fish today
- 19:00–21:00 local time — score 75/100
- 00:00–02:00 local time — score 75/100
- 08:00–10:00 local time — score 75/100
3-day outlook by species
| Species | Friday 9 Oct | Saturday 10 Oct | Sunday 11 Oct |
|---|---|---|---|
| Rainbow Trout | 61 — good | 61 — good | 62 — good |
| Largemouth Bass | 75 — good | 79 — good | 81 — excellent |
| Channel Catfish | 72 — good | 75 — good | 75 — good |
Why this score
Cast & Scan uses a deterministic, published scoring model — no black box. The strongest influences on today's Guadalupe River (Canyon Tailwater) rating:
- light: helping (+1)
- water temperature: helping (+0.99)
- wind: helping (+0.9)
- precipitation: helping (+0.9)
- season: helping (+0.9)
- river flow: helping (+0.9)
Forecast computed Fri, 09 Oct 2026 18:49:29 GMT · data: Open-Meteo + gauge Guadalupe Rv nr Spring Branch, TX · refreshed automatically through the day · see our published accuracy
Wondering how this stacks up against the apps you already know? Cast & Scan vs Fishbrain vs BassForecast — an honest comparison, including where they beat us.
Read before you go
- The best time to fish for bass
- Trout stream tactics, read through the forecast
- How river flow trend changes the bite
- Barometric pressure and fishing, explained
More rainbow trout waters
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Nearby waters
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- North Fork River (Norfork) — Arkansas, USA (912 km away)
- San Juan River (Quality Waters) — New Mexico, USA (1158 km away)