San Marcos River
Fishable
Flow114 CFS
Trendstable
Clarityclear
Temp72°F
Topwater Poppers white/chartreuse #6-8Clouser Minnows chartreuse/white #4-6Grasshopper Patterns #8-10Crayfish Patterns #6
Best Rivers in Texas for Fly Fishing
Quick Reference
| What | When | Key Numbers |
|---|---|---|
| Guadalupe River trout | Nov - May (stocking Dec - Mar) | 60-150 CFS ideal wading; artificial lures only in trophy zones |
| Hill Country bass | Year-round (best Mar - Jun, Oct - Nov) | S. Llano: 40-150 CFS; San Marcos: 100-200 CFS; Llano: 150-500 CFS |
| Devils River expedition | Spring - early fall | 4-day trips; book 5+ months ahead; $1,500-$2,750/person |
| Guided trips | Book by October for winter trout | $350-$600/day (1-2 anglers) |
| Fly shop | Lone Star Fly Fishing | (281) 382-2871, 14121 River Rd, New Braunfels |
FISHABLE
Updated yesterday
The San Marcos continues to be the most reliable and comfortable fishery in the Hill Country through peak summer. Spring-fed flows at 114 CFS (August 19), up from the 90 CFS readings in mid-June — the July flood recharge pushed Edwards Aquifer levels higher and the San Marcos is benefiting. Running solidly in the ideal 100-200 CFS range. Edwards Aquifer J-17 reading at approximately 648-650 feet (August 5-6), 10-day average around 650 feet — aquifer levels rose significantly from the July storms that filled Canyon Lake to 100%. EAA remains at Stage 2 restrictions. The spring-fed consistency is the defining advantage in mid-August: while the Guadalupe tailwater is running elevated at 252 CFS due to Canyon Lake releases and the Llano at 267 CFS, the San Marcos holds steady in its sweet spot. Guadalupe bass concentrated on cypress root systems, riffle heads, and current seams behind limestone. Topwater poppers white/chartreuse #6-8 along shaded banks at dawn remain the top producer — the 114 CFS flow gives riffles more energy than the June conditions, pushing bass into predictable feeding lanes. Rio Grande cichlids aggressive along banks on Pat's Hot Tail Mini-Craw and deer hair ants #14-16. Peak terrestrial season in full swing: grasshopper patterns #8-10 the primary surface fly along grassy banks, foam beetles #12-14 reliable in riffles. Spring-fed water temp holding at 72°F — a full 8-10 degrees cooler than freestone Hill Country streams pushing 80-82°F, making the San Marcos the most comfortable summer option by a wide margin. Dawn-to-9am window most productive, but the cooler spring-fed water extends the bite window later than on any other Hill Country river. Weekend recreational traffic at peak summer levels — weekday mornings essential through September.
Llano River
Fishable
Flow267 CFS
Trendstable
Clarityclear
Temp82°F
Clouser Minnows chartreuse/white #4-6Woolly Buggers olive/black #6-8Crayfish Patterns #4-6Topwater Poppers white/chartreuse #6-8
Guadalupe (Freestone)
Fishable
Flow240 CFS
Trendstable
Clarityclear
Temp82°F
Topwater Poppers white/chartreuse #6-8Grasshopper Patterns #8-10Clouser Minnows chartreuse/white #4-6Woolly Buggers olive/black #8-10
Guadalupe River (Tailwater)
Fishable
Flow252 CFS at Sattler
Trendstable
Clarityclear
Temp~63°F near dam, warming to 80°F+ below Mile 3
Clouser Minnows chartreuse/white #4-6BH Woolly Buggers black/olive #10-12Topwater Poppers white #6-8Grasshopper Patterns #8-10
🎣 TACTICS RIGHT NOWMid-August in the Hill Country: all four rivers are fishable with healthy flows from the July storm recharge that filled Canyon Lake to 100%. This week's top pick: the San Marcos at 114 CFS with 72°F spring-fed water — the most comfortable and reliable option, running in the ideal 100-200 CFS range with the coolest water in the Hill Country. The spring-fed temperature extends the productive fishing window well past the dawn-to-9am cutoff that limits every other river. Second choice: the Llano at 267 CFS for float trips — clear water, prime flows for the Castell-to-Mason float, and peak terrestrial season means grasshoppers and poppers produce explosive strikes at dawn. Third: the tailwater at 252 CFS — higher than ideal for wading but float trips are productive, and the Orvis report confirms strike indicator nymphing and streamers are producing well. The freestone Guadalupe at 240 CFS rounds out the options — floatable with good clarity, though the 82°F water temp makes dawn-only fishing essential. Weekday mornings are critical on all rivers through September — weekend recreational traffic is at peak summer levels.
Dry Fly
Peak terrestrial season across the Hill Country. The San Marcos at 114 CFS with 72°F spring-fed water is the standout surface fishery: Grasshopper Patterns #8-10 along grassy banks are the top producerTopwater Poppers white/chartreuse #6-8 at dawn along shaded cypress structure for explosive Guadalupe bass strikesFoam Beetles #12-14 and Deer Hair Ants #14-16 through riffles for cichlids and panfish. The spring-fed 72°F water extends the productive surface window well past 9am — a critical advantage when freestone rivers are pushing 82°F and bass shut down by mid-morning. The Llano at 267 CFS with clear water is prime topwater territory — poppers white/chartreuse #6-8 and grasshopper patterns #8-10 tight to shaded banks at dawnthe float-fishing window for topwater is excellent at these flows. The freestone Guadalupe at 240 CFS supports topwater along shaded cypress banks at dawn — higher flows concentrate bass in predictable structure. The tailwater at 252 CFS offers topwater in slower side channels and eddiesthough the stronger current limits surface presentations to protected water. Dawn to 9am is the non-negotiable fishing window in mid-August heat across all rivers.
Nymph
Subsurface fishing productive across all Hill Country rivers in mid-August. Trout nymphing done for the season — leave holdover rainbows alone until November stocking. On the tailwater at 252 CFSthe higher flows actually improve nymph presentations — the Orvis August 10 report recommends strike indicator nymph fishing in deeper sections as the most productive techniquewith Hare's Ear nymphsRojo Midgesand Micro Eggs (orange) performing well. Crayfish Patterns #6-8 for Guadalupe bass and largemouth bounced through deeper eddies and pool heads where bass stack out of the main current. Pat's Hot Tail Mini-Craw for Rio Grande cichlids on the San Marcos at 114 CFS — target along banks and near structure. The Llano at 267 CFS with clear water is productive for nymphing — crayfish patterns #4-6 bounced along the bottom in deeper poolsbass holding on limestone structure. The freestone Guadalupe at 240 CFS supports crayfish patterns #6-8 through deeper runs and eddies. In mid-August heatsubsurface fishing often outproduces topwater after the first hour of daylight as bass move deeper.
Streamer
Streamer fishing productive across the Hill Countryespecially on the higher-volume rivers. The tailwater at 252 CFS is fishing well for streamers — the increased current gives swing-and-strip presentations more action. BH Woolly Buggers black/olive #10-12 through deeper runs and pool headsClouser Minnows chartreuse/white #4-6 stripped along shaded banks targeting bass stacked on structure. The Llano at 267 CFS offers excellent streamer fishing on float trips — Clouser Minnows chartreuse/white #4-6 with aggressive strips through deeper bank runs and Woolly Buggers olive/black #6-8 swung through pool tails are the top producers in the clear water. The freestone Guadalupe at 240 CFS is prime for Clouser Minnows and Woolly Buggers worked through shaded cypress root systems and limestone structure. The San Marcos at 114 CFS offers Drunk n Disorderly and Ball Peen Craw patterns for larger bass along submerged timberSmall Frog Patterns #6 for largemouth in slower pools at dawn. The elevated flows across the Hill Country mean more water to cover — streamers are the most efficient way to search for bass on float trips.
FORECASTThe Hill Country is in a strong mid-August pattern with all four rivers fishable — a far better picture than typical late-summer conditions thanks to the July storms that recharged aquifers and filled Canyon Lake to 100%. The Guadalupe at Spring Branch at 240 CFS and Sattler at 252 CFS are running higher than the ideal wading range due to increased Canyon Lake releases, but float trips are productive. The Llano at 267 CFS is in prime float range with clear water. The San Marcos at 114 CFS with 72°F spring-fed water is the most comfortable and reliable option. Canyon Lake at 100% full (August 17, 909.60 feet — 0.60 feet into the flood pool) — expect continued elevated releases on the tailwater until the lake drops below conservation level. Edwards Aquifer J-17 at approximately 648-650 feet (August 5-6, 10-day average ~650 feet) — aquifer levels healthy from summer recharge. EAA at Stage 2 restrictions. This is exclusively warmwater fishing through October — Guadalupe bass, largemouth, Rio Grande cichlids, and panfish. Trout season resumes with November stocking. Devils River expeditions in their late-summer window — spring-fed water keeps temps comfortable despite the heat. Monitor gauges through August — scattered Hill Country thunderstorms can spike flows rapidly on the freestone rivers.Peak summer in the Hill Country: daily highs in the mid-to-upper 90s°F with typical scattered afternoon thunderstorms. The major weather story of the summer was the July storm cycle that filled Canyon Lake from 61% to 100%, dramatically increasing tailwater releases and recharging Hill Country springs and aquifers. Edwards Aquifer J-17 at approximately 648-650 feet (August 5-6, 10-day average ~650 feet) — well above the June readings of 644 feet. EAA at Stage 2 restrictions. Canyon Lake at 100% full (August 17, 909.60 feet) — releases will remain elevated until the lake drops below conservation elevation of 909.00 feet. Water temps: ~63°F in the upper tailwater cold zone near Canyon Dam (per Orvis August 10 report), 80-82°F on freestone rivers (Guadalupe, Llano), 72°F on the spring-fed San Marcos. Dawn-to-9am is the non-negotiable fishing window — mid-August heat shuts down surface feeding by mid-morning on all freestone rivers. The San Marcos is the one exception where the 72°F water extends productive fishing later. Flash flood risk remains through August and September — Hill Country thunderstorms can develop rapidly and spike flows on freestone rivers within hours. Always check forecasts and monitor USGS gauges before and during trips. Best fishing this week: the San Marcos for comfort and reliability, the Llano for float-trip topwater fishing at dawn, and the tailwater for deeper nymph and streamer presentations.
Overview
Texas is not the first state most fly anglers think of, and that's exactly what makes it worth fishing. The Hill Country holds clear, spring-fed rivers lined with bald cypress, the Guadalupe River below Canyon Lake ranks among the nation's top 100 trout streams, and the Devils River offers one of the most pristine wilderness float-fishing experiences in the lower 48. Add in the Guadalupe bass — the state fish, found nowhere else on earth — and Texas quietly delivers some of the most diverse fly fishing in the South.
The state's fly fishing splits into three distinct categories: winter trout fishing on the Guadalupe River tailwater, year-round warmwater fishing for bass and panfish on Hill Country streams, and remote multi-day expeditions on the Devils River. Each appeals to a different kind of angler, but all share one thing: low fishing pressure compared to Western destination rivers.
The Rivers
Guadalupe River (Below Canyon Lake)
The Guadalupe below Canyon Dam is one of the southernmost year-round trout fisheries in the United States. Cold water releases from the bottom of Canyon Lake keep temperatures in the 50s°F through the trophy trout zone, supporting rainbow trout year-round in the upper miles.
Trout Unlimited and Texas Parks and Wildlife stock the river with rainbow trout from late November through March — roughly 18,000 fish at the Canyon Tailrace alone across 10 stocking dates during the 2025-2026 season. Fish average 12-14 inches, with 20-inch trout not uncommon and specimens reaching 5-8 pounds.
What makes it special: This is legitimate tailwater trout fishing an hour from Austin or San Antonio. The bald cypress-lined banks and limestone cliffs make it visually stunning, and the hatch diversity — midges year-round, BWOs and caddis April-October, Hexagenia in summer — rivals many Western rivers.
Access: The streambed below Canyon Lake is publicly owned, but both banks are private property. Float trips are the primary access method, though a few public access points exist:
- Guadalupe Park (Army Corps of Engineers) — year-round access
- Camp Huaco Springs — free TPWD access, December through early March during stocking season
- Action Angler on Guadalupe River Road — $10/person walk-in wade access, one of the most practical options for visiting anglers without a guide
- Stocking locations: Guadalupe Park, Whitewater Camp, 4th Crossing, 3rd Crossing, and Camp Huaco Springs
Flow windows:
- 60-150 CFS: Ideal wading and float fishing
- 150-300 CFS: Floatable, wading limited to edges
- 300+ CFS: Difficult wading, strong current
Summer tubing warning: From Memorial Day through Labor Day, hundreds of tubers float through the trout zone daily, especially on weekends. The noise and traffic push trout into deeper holding water and make midday fishing nearly impossible. If you're planning summer trout fishing, get on the water at dawn and be off by 11am, or fish weekdays only.
Check Guadalupe River flows on RiverReports before heading out.
Bald cypress roots along a central Texas riverbank — a signature feature of Hill Country streams
Upper Guadalupe River (Above Canyon Lake)
Don't overlook the Upper Guadalupe above the lake. This freestone section flows through western Kerr County near Boerne, Comfort, and Spring Branch — bald cypress-lined banks, limestone cliffs, and far less development than the trout tailwater below. The Upper Guad is a dedicated warmwater fishery: Guadalupe bass, largemouth bass, carp, sunfish, Rio Grande cichlids, and gar.
Best approach: Topwater poppers thrown tight to shaded banks produce explosive strikes from bass. Baitfish and crawfish streamers work subsurface. The tree-lined canopy keeps summer days surprisingly comfortable.
Access: Guadalupe River State Park offers direct river access with no fishing license required from shore. Float trips with Lone Star Fly Fishing access the Upper Guad — half day $400, full day $600.
Flow note: As a freestone stream, water levels fluctuate with rainfall. Low-water periods can limit float trip options. Check RiverReports before planning.
South Llano River
The South Llano near Junction holds what biologists consider the best pure-strain Guadalupe bass fishery in the world. Between 2011 and 2017, Texas Parks and Wildlife stocked over 700,000 genetically pure Guadalupe bass here, and the population has thrived in these clear, spring-fed waters.
Target species: Guadalupe bass (primary), largemouth bass, Rio Grande cichlids, longear sunfish, catfish, gar, and carp.
What makes it special: The Guadalupe bass — nicknamed the "Texas Trout" for its willingness to take flies — is endemic to Central Texas. These fish hit topwater poppers, streamers, and crayfish imitators aggressively, especially in riffles and around limestone structure. The South Llano also sees remarkably little fishing pressure.
Access: South Llano River State Park provides 2,600 acres with 58 campsites and direct river access. No fishing license required when fishing from shore within the state park. The TPWD River Access lease at County Road 150 in Junction offers free bank fishing and boat launching.
Best seasons: March through June and October through November. Summer fishing is productive but hot — the cypress canopy provides welcome shade.
Flow windows:
- 40-80 CFS: Low but fishable on foot; excellent wading
- 80-150 CFS: Ideal for both wading and kayak floats
- 150-300 CFS: Good floating; wading limited to shallower riffles
- Below 30 CFS: Kayaks scrape; wade only
Float fishing: Kayak floats range from one hour to full-day excursions. Low water may require portaging through shallow sections. A pontoon or kayak with a shallow draft works best — pedal drives can hit rocks at lower levels.
Devils River
The Devils River is a bucket-list destination — one of the cleanest, most remote rivers in Texas, fed by springs that keep the water gin-clear year-round. Access is extremely limited, most of the river flows through private ranches, and multi-day expeditions require advance planning and physical fitness.
Target species: Largemouth bass, smallmouth bass (both catch-and-release only), carp (10-20 pound fish are common), catfish, and tilapia.
What makes it special: Sight fishing in turquoise water for bass and world-class carp, with zero cell service, dark-sky stargazing, and Native American rock art accessible only by river. This is wilderness fly fishing in a state better known for flat coastal waters.
Logistics: The standard trip is 4 days covering roughly 15 miles. Day 1 is the toughest — 6 miles of paddling plus portaging over the 15-foot cliffs at Dolan Falls. The Devils River State Natural Area requires a $10 access permit (DRAP). Book guided trips 5+ months in advance.
Outfitters:
- Imagine That Outfitters (Orvis Endorsed): 2-4 day expeditions, $1,500-$2,750/person, luxury camping with gourmet meals
- Far West Texas Outfitters: 2-4 day canoe camping trips, $1,400-$1,800/person; day trips $500/person
- Angell Expeditions: 4-day kayak expeditions from Marfa
Gear warning: Bring protective rod cases. Narrow, brushy channels routinely break rod tips.
San Marcos River
Spring-fed from the Edwards Aquifer, the San Marcos maintains remarkably consistent flows and water temperatures year-round. The crystal-clear water holds Guadalupe bass, largemouth bass, smallmouth bass, Rio Grande cichlids, and various sunfish species.
Access: Several TPWD River Access sites including San Marcos River Retreat, Scull Road Bridge Access, and River Grove provide free public fishing.
Best approach: Wade fishing with a 3-4 weight rod. Target riffles for Guadalupe bass and submerged timber for cichlids. The clear water demands stealth — soft casts and careful wading are essential.
Flow windows: The San Marcos typically runs 100-200 CFS year-round thanks to consistent spring flow from the Edwards Aquifer. It rarely blows out or drops to unfishable levels, making it one of the most reliable options for a last-minute trip.
Track San Marcos River flows on RiverReports for current conditions.
Llano River
The Llano and its forks offer miles of wadeable Hill Country water for Guadalupe bass, largemouth bass, and panfish. Multiple TPWD River Access sites — Pete's Pecan Patch, Castell Crossing, Maso-Llan Road — provide free bank fishing and boat launching along the river.
Flow windows:
- 150-300 CFS: Good wading in most sections
- 300-500 CFS: Ideal for kayak floats; wading possible in riffles
- 500-1,000 CFS: Float only; too deep and fast for safe wading
- Below 100 CFS: Very low; some sections too shallow for kayaks
Best seasons: Spring (March-June) and fall (October-November) produce the best fishing. Summer can be productive early and late in the day but water temperatures climb.
Blanco River
The Blanco flows through Hays County and holds Guadalupe bass, largemouth bass, Rio Grande cichlids, sunfish, and carp. John Knox Ranch River Access provides free public fishing. The Blanco is part of the active Guadalupe bass restoration program, with TPWD stocking genetically pure fish to rebuild populations.
A peaceful Hill Country river scene — the kind of setting you'll find on the Llano, Blanco, and South Llano
Species Guide
Rainbow Trout (Guadalupe River)
Stocked November through March; holdover fish available year-round in the tailwater zone below Canyon Dam. The Guadalupe River hatch chart from Big Y Fly Co shows year-round insect activity:
Year-round patterns: Zebra Midges (#18-24, black/red/olive), San Juan Worms (#10-14, red), scuds (#12-18), Woolly Buggers (#4-12)
Spring through fall (Apr-Oct): Blue-winged Olives (#18-20), caddis (#12-16), Light Cahills (#14-16), Grey Drakes (#10-12), Tricos (#22-24), terrestrials (#6-16)
Summer peak (Jun-Aug): Hexagenia (#4-8) — the largest mayfly on the river
Primary technique: Nymphing produces most consistently. A two-nymph rig with a midge dropper below a San Juan Worm or Pat's Rubber Legs covers most situations. Dry fly fishing during active hatches is excellent, particularly during BWO and caddis emergences.
Guadalupe Bass
The official state fish, found only in Central Texas streams. Guadalupe bass feed on crayfish, baitfish, and insects in clear, rocky riffles and runs.
Key flies: Topwater poppers (white, chartreuse), Clouser Minnows, crayfish patterns, wooly buggers in olive and black. Brighter colors tend to outperform on Hill Country streams.
Gear: A 4-5 weight rod with floating line handles most situations. For tight quarters under overhanging trees, a 7.5-8 foot rod improves accuracy.
Rio Grande Cichlids
The only cichlid species native to the United States. Found throughout Hill Country rivers — the Colorado, San Marcos, Guadalupe, Llano, and Blanco all hold good populations.
Key flies: Texas Freshwater Fly Fishing recommends five patterns: Pat's Hot Tail Mini-Craw, Modified Rio Getter, Jigged Foxy Clouser, Rio Poquito, and Deer Hair Ants. Fish small — cichlids have small mouths.
Technique: Cast tight to banks, logs, and rocks with soft presentations. Use slow, start-and-stop retrieves near the bottom. Repeat casts to the same cover — persistence triggers strikes more than perfect first presentations.
Gear: A 2-4 weight rod with a floating line and 6-7 foot leader with 3x-5x fluorocarbon tippet.
Where to Start
New to fly fishing or new to Texas? Start with the San Marcos or South Llano rivers for bass and panfish. Easy wading, forgiving fish, consistent flows, and free public access through state parks and TPWD leased sites. A 4-weight rod and a box of poppers and small Woolly Buggers will keep you busy all day. These rivers reward basic casting skills and don't require technical nymphing rigs.
Experienced fly anglers: The Guadalupe River trout zone is the main draw. If you're comfortable with two-nymph euro-style rigs, 6X tippet, and #20-24 midges, you'll find genuinely technical tailwater fishing. The key challenge is access — book a float trip or know which walk-in spots to hit (Action Angler, Guadalupe Park, Camp Huaco Springs). Winter weekdays offer the best combination of fresh stockings and light pressure.
Looking for an adventure? The Devils River is a legitimate wilderness expedition — physically demanding, logistically complex, and deeply rewarding. It's not a day trip. Plan for 4 days, bring your fitness, and book 5+ months ahead.
Regulations
Texas Parks and Wildlife manages all freshwater fishing regulations. Key rules for fly anglers:
License: Required for anglers 17 and older. Freshwater Package: $30 resident, $58 non-resident. One-Day All-Water: $11 resident, $16 non-resident. No fishing license required when fishing from shore within state parks.
Guadalupe River Trout Zones:
- Zone 1 (800 yards below Canyon Dam to FM 306): 12-18 inch slot limit, 5 trout daily (max one over 18"), artificial lures only
- Zone 2 (FM 306 to River Road second crossing): 18-inch minimum, 1 trout daily, artificial lures only
- Outside zones: No minimum length, 5 trout daily, no gear restrictions
Bass: Combined daily limit of 5 black bass (largemouth, smallmouth, Guadalupe, spotted). Largemouth and smallmouth require 14-inch minimum. No minimum for Guadalupe bass.
Sunfish, cichlids, carp: No bag or length limits.
Devils River: Smallmouth and largemouth bass are catch-and-release only. $10 Devils River Access Permit required for the State Natural Area.
Guided Trips
Half-day guided trips typically run $350-$525 for 1-2 anglers. Full-day trips run $500-$750. Most outfitters provide all gear — rods, reels, waders, flies, and lunch on full-day trips. A Texas fishing license is your responsibility.
Guadalupe River trout and Hill Country bass:
- Lone Star Fly Fishing — Head guide John Shank operates from River Road in New Braunfels. Float trips in Aire whitewater rafts. Half day $400, full day $600.
- Go Outside Expedition Co. — Guides 12 rivers across the Hill Country. Raft and kayak trips. Half day $400, full day $550.
- Alvin Dedeaux / All Water Guides — 25+ years guiding Central Texas rivers. Half day $450, full day $600.
- Expedition Outfitters — San Antonio-based, covering the Guadalupe, San Marcos, and Devils River. Half day $350.
Premium lodge experience:
- Joshua Creek Ranch — 5-Star Orvis-rated sporting ranch near Boerne. Private stocked creek plus guided Guadalupe River float trips. Guided half day $425-$525, full day $625-$750. Orvis Fly Fishing School sessions from $339.
Devils River expeditions:
- Imagine That Outfitters — Orvis Endorsed. Private ranch or SNA trips, 2-4 days, $1,500-$2,750/person with gourmet meals and luxury camping.
- Far West Texas Outfitters — Canoe camping trips, 2-4 days, $1,400-$1,800/person.
Seasonal Calendar
November - March (Trout Season): Peak fly fishing on the Guadalupe River. TPWD stocks rainbow trout from late November through early March. Water temperatures in the low 50s°F. Midges, San Juan Worms, and egg patterns dominate. January and February offer the best fishing with the freshest stockings and fewest crowds. Book guided trout trips by October — winter dates fill fast.
March - June (Spring Warmwater): Hill Country rivers come alive. Guadalupe bass feed aggressively in riffles as water warms. BWO and caddis hatches begin on the Guadalupe. South Llano River fishing peaks. This is the best window for combining trout and bass in a single trip.
June - September (Summer): Trout fishing winds down as water temperatures approach 70°F and ethical guides transition to warmwater species. The Guadalupe below Canyon Dam sees heavy tubing traffic from Memorial Day through Labor Day — hundreds of tubers daily on weekends make midday fishing futile. Fish at dawn or switch to weekdays. Bass fishing on Hill Country rivers remains strong, especially early morning and evening. Terrestrial patterns — hoppers, ants, beetles — produce well. The Hexagenia hatch on the Guadalupe (June-August) offers dramatic dry fly fishing if you beat the tube hatches. Devils River expeditions are comfortable despite heat thanks to spring-fed water temperatures.
October - November (Fall): Bass fishing peaks again on Hill Country rivers. Guadalupe River begins cooling toward trout-friendly temperatures. Excellent time for the South Llano and Llano rivers with low crowds and active fish.
Hazards and Considerations
Flash floods: Texas Hill Country rivers rise fast and dangerously after rain. A river at 100 CFS can spike to 10,000+ CFS within hours during a thunderstorm. Always check weather forecasts and current flows on RiverReports before wading.
Heat: Summer temperatures routinely exceed 100°F. Start early, carry plenty of water, and seek cypress shade during midday. Sun protection is not optional.
Private land: Nearly all Texas riverbank is privately owned. You can legally wade and float on navigable waterways, but you cannot exit onto private banks without permission. The streambed is public; the banks are not.
Cedar fever: Mountain cedar (Ashe juniper) pollinates December through February — prime trout season. If you have allergies, bring medication. Local guides will tell you this is no joke.
Zebra mussels: Draining all water from boats and receptacles is mandatory when leaving or approaching Texas public fresh waters.
Snakes and wildlife: Water moccasins are present on most Hill Country rivers. Watch where you step when wading and entering/exiting the water.
Frequently Asked Questions
Is Texas good for fly fishing?
Yes. Texas offers surprisingly diverse fly fishing — the Guadalupe River is the southernmost trout fishery in America, with stocking from December through March. Hill Country rivers like the South Llano and Llano produce excellent smallmouth bass year-round. And the Devils River is one of the most pristine backcountry fishing experiences in the lower 48. Track Texas river flows to time your trip.
Where can I fly fish in Texas?
Top spots include the Guadalupe River below Canyon Dam for trout, the South Llano and Llano rivers for Guadalupe bass and smallmouth, the San Marcos River for sight-fishing in crystal-clear spring water, and the Devils River for remote multi-day expeditions. Most of these are within 1-2 hours of San Antonio or Austin.
What is the best time to fly fish in Texas?
Trout fishing on the Guadalupe peaks December through March during stocking season, with holdover trout available through May. Bass fishing is best March through June and again October through November. The Devils River fishes well from spring through early fall. Check current Texas flows before heading out.
Using RiverReports
Track real-time flows for all major Texas fly fishing rivers on RiverReports. Key gauges to watch:
- Guadalupe at Spring Branch — Best gauge for the trout zone below Canyon Dam
- Guadalupe at Sattler — Upper trout section flows
- Guadalupe at New Braunfels — Lower river conditions
- Llano at Mason — Hill Country bass fishing
- San Marcos at San Marcos — Spring-fed consistency check
- Pedernales at Johnson City — Rainfall-dependent; shows Hill Country conditions
Compare current flows against seasonal averages to determine whether conditions favor wading, floating, or staying home. For the Guadalupe trout zone, 60-150 CFS means good wading; above 200 CFS, plan on floating.
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