"The Guadalupe River and Canyon Lake are in the best shape we have seen in about 10 years."
That line opens the summer 2026 fisheries update from Guadalupe River Trout Unlimited, written by the chapter's vice president of fisheries, Jimbo Roberts, on August 10. The refill reaches the river below the dam. Releases are steadier, last winter's trout had a better summer, and the coming season will look different from anything the drought years allowed.
From a Half-Empty Lake to a Steady River
On April 18, 2026, the Texas Water Development Board's Canyon Lake data showed the reservoir at 58.3% full. By July 18 it was at 96.8%. As of October 18 it sat at 97.1%, about 1.35 feet below its 909-foot conservation pool.
Below the dam, that water decides what the river does. In the same GRTU update, Roberts wrote that the lake was 1.05 feet above pool on August 10 and that releases were running between 150 and 300 cubic feet per second depending on the day. Those flows were "cleaning out the mud and leaving a much clearer river." He also noted that the flow agreement between GRTU and the Guadalupe-Blanco River Authority had kicked in, with weekend flows running above what the agreement requires, and added: "It has been a long time since we have seen flows in excess of 100cfs."
The river has calmed since August. GBRA's conditions page reported 103 cfs at the Sattler gauge at 8:20 p.m. on October 18, with a forecast Canyon release of 100 cfs. GRTU calls Sattler the gauge that reflects the dam release and "the main flow to watch for fishing below the dam," as opposed to the inflow gauges above the lake.
What the Trout Inherited From Last Winter
More fish are expected to carry over from last season. Roberts expects "the holdover population will be higher this fall." He says those fish will mostly run 13 to 16 inches, smaller than last year's holdovers because the chapter was supplied smaller fish to stock, but "fatter" thanks to summer supplemental feeding, "but there will still be some monsters swimming around to be caught."
The river may also hold a new fish this year. GRTU first described its Whitlock-Vibert box program in a spring 2022 conservation update. The plan was a brown trout egg project concentrated in the upper tailrace, with support from Texas Parks and Wildlife's Inland Fisheries division. As of August, the chapter had not yet assessed those eggs, but Roberts wrote that he expects "to see some small Browns start being caught in the upper river this fall."
New fish are coming too. GRTU plans four stockings this season, totaling 16,000 pounds of rainbow trout. TPWD stocks the tailrace separately. Last season its schedule listed 18,471 trout for the Canyon Tailrace, stocked on dates from December 5, 2025, through February 26, 2026. As of October 18, TPWD's page still shows that 2025-26 schedule, so this winter's state dates have not been posted yet.
Higher Water Changes the Wading
The same flows that cleared the river also make it harder to cross. Roberts was blunt about it. Above 300 cfs, "wading the river becomes increasingly difficult," and above 500 cfs, crossing is possible "in only certain areas." His advice: fish with friends, carry a wading staff when crossing, and wear a wading belt at all times so waders don't balloon with water after a fall.
He also pointed to El Niño, which he expects to bring cooler, wetter weather to Central Texas from October through late winter. If that rain arrives, the 103 cfs reading from mid-October may not last. Checking the Sattler number before you go is now part of the trip.
Water temperature is the other number to check. GRTU's river flow page posts live readings from its downstream sensors along with a three-tier guide:
- 65°F or below: fish with care, land trout quickly and keep them wet.
- 65 to 68°F: fish early, limit your time and stop if the temperature keeps rising.
- Above 68°F: stop trout fishing and target a warm-water species instead.
On the evening of October 18, the sensors read 63.4°F at mile 1.3 and 64.8°F at mile 2.9. That leaves very little room under the caution line, which is why the first cold fronts matter so much at the start of the season.
Where You Can Get In
Most of the tailrace runs past private land along River Road, so how you reach the water shapes the whole season. These are the main options for the 2026-27 winter:
| Access | Cost | Details |
|---|---|---|
| GRTU Lease Access Program | $200 permit; $20 guest and youth passes | Season runs Nov. 1, 2026, to Oct. 31, 2027; capped at 800 permits; 14 private locations |
| Guadalupe Park | Free | TPWD lists it as a year-round public fishing site below Canyon Dam, operated by the U.S. Army Corps of Engineers |
| Rio Guadalupe Resort | $10 day fishing pass for non-guests | Includes parking and river access; at the fourth River Road crossing in Sattler |
| Camp Huaco Springs | TPWD free-access lease in past seasons | 4150 River Road at First Crossing; no 2026-27 dates posted yet |
The GRTU program carried a cap of 800 permits at $200 each, sold first come, first served. Each permit allows up to six guest passes and six youth passes at $20 apiece. Getting a permit took several steps: Trout Unlimited membership by July 31, validation in August, an online orientation in September, then purchase in early October. Anyone who missed that sequence should check GRTU's lease access page directly. The chapter's newsletter describes access to 14 private locations. Its September 2026 rules require catch-and-release on leased properties and bar guides from using a permit to bring clients to the river.
TPWD's Guadalupe River trout page lists five stocking locations: Guadalupe Park, Whitewater Camp, 4th Crossing, 3rd Crossing and Camp Huaco Springs. Last winter, TPWD made Camp Huaco free for trout anglers from December 5 through March 7, open from 30 minutes before sunrise to 30 minutes after sunset, according to its December 2025 release. Watch for a similar announcement this winter. Until one appears, last year's dates are only a pattern.
Rio Guadalupe Resort's FAQ lists the $10 non-guest day pass. Rio Anglers Fly Shop sits nearby at 14130 River Road near 4th Crossing and offers walk-and-wade access on the resort property. Farther upstream, Lazy L&L Campground at 11699 River Road also bills itself as a trout fishing and stocking location. For a guided day, ReelFly is a locally owned fly shop and guide service that has advertised 2026-27 trout season bookings, and Lone Star Fly Fishing runs Hill Country trips from its New Braunfels base on the Guadalupe.
The Rules on the Water
TPWD sets special trout regulations for two stretches of the tailrace, posted on its Guadalupe River regulations page:
- Zone 1, from 800 yards below the dam to the east FM 306 bridge: a 12 to 18-inch slot limit, a five-fish daily bag with no more than one fish over 18 inches, and harvest only with artificial lures.
- Zone 2, from the east FM 306 bridge downstream to the second River Road crossing: an 18-inch minimum, a one-trout daily bag, and harvest only with artificial lures.
- Outside those zones: no minimum length and a five-trout daily bag.
TPWD also requires a fishing license with a freshwater endorsement for public freshwater, unless an angler is exempt. Texas residents under 17 are exempt. This is general information, not legal advice, so confirm the current rules with TPWD before you keep a fish.
The Dates That Shape the Winter
The season runs on a handful of dates, and one of them will decide what future winters look like:
- November 1, 2026. The GRTU lease season opens on its 14 private locations.
- Early December. Last season, TPWD stocked the Canyon Tailrace weekly from early December through late January. Expect a similar window once the 2026-27 schedule is posted.
- December 31, 2026. The current flow agreement between GRTU and GBRA expires. The chapter's flow agreement update describes renewal talks as friendly and says GRTU expects a new agreement "in much the same form as it is currently." Roberts wrote that the agreement kicked in once summer rains brought the lake above pool.
- February 19 to 21, 2027. Troutfest TX returns as a full three-day event in New Braunfels. In 2026 it was instead a single-night "Mend the River" fundraising banquet at Lazy L&L Campgrounds on February 21.
Before you head down River Road this winter, check the Sattler flow and the nearest downstream temperature sensor, then pick an access point from the table above.
Some of the best parts of living near Canyon Lake happen a few miles below the dam. If you're thinking about a home closer to River Road and the tailrace, or just want to talk through which corners of the area keep you closest to the water you fish, Ashley Lomas knows the roads between the lake and the river. Let's Connect.
