ROARING FORK VALLEY
COMPLETE FLY FISHING REPORT
April 28 – May 11, 2026
2026 WATERSHED OVERVIEW: A HISTORIC FISHING WINDOW
The Roaring Fork Valley has settled into low, clear, and astoundingly fishable conditions that would normally not arrive until mid-summer.
That means you’re getting the best of both worlds: spring hatches firing on schedule while the rivers remain perfectly wadeable, clear as gin, and uncrowded. The Roaring Fork at Glenwood Springs ran at approximately 358 CFS on April 23 according to USGS gauge 09085000. Well below the typical late April average, which translates to wide open wading, visible fish, and technical presentations that reward preparation. The Fryingpan saw Bureau of Reclamation bump flows to 205 CFS as of April 25, clearing nicely after that bump and fishing at a strong 7 out of 10.
The key strategic context for the next two weeks: do not expect a traditional spring blowout. The Colorado Basin River Forecast Center projected the Roaring Fork’s peak runoff near 2,000 CFS, a fraction of the 6,000/7,000 CFS seen in a normal year. What runoff there is may have already largely passed. Rivers could tick up modestly with warm temperatures, but blowing out is unlikely. Fish through May with confidence.
CURRENT CONDITIONS AT A GLANCE.
| RIVER / SECTION | FLOW (CFS) | CLARITY | WATER TEMP | OVERALL RATING |
| Roaring Fork – Glenwood Springs | ~358 CFS | Clear | 46°F | ★★★★ 8/10 |
| Roaring Fork – Basalt (Middle) | ~175 CFS | Clear | 44–46°F | ★★★★ 7/10 |
| Fryingpan – Upper | ~205 CFS | Clearing | 44°F | ★★★★ 7/10 |
| Fryingpan – Middle & Lower | ~205 CFS | Clear | 44–46°F | ★★★★ 7/10 |
| Lower Colorado (Glenwood–Rifle) | ~1,130 CFS | Clear | 44–46°F | ★★★★ 7/10 |
| Crystal River – Redstone area | ~80–120 CFS | Clear–Clearing | 42–44°F | ★★★ 6/10 |
USGS Gauges: Roaring Fork at Glenwood – 09085000 • Fryingpan below Ruedi – 09080400 • Crystal near Redstone – 09081600 • Colorado below Glenwood – 09085150
ROARING FORK RIVER
The Roaring Fork is one of Colorado’s finest and most diverse freestone fisheries, running 70 miles from Independence Pass above Aspen all the way to its confluence with the Colorado River in Glenwood Springs. It is home to wild browns, rainbows, and cutthroat trout, and is Gold Medal designated from the Fryingpan confluence at Basalt downstream to Glenwood. Right now, all three sections are fishing at or above expectations for late April.
UPPER ROARING FORK — Aspen to Basalt
| USGS FLOW~18 CFS (near Aspen) | CLARITYCrystal Clear | WATER TEMP38–42°F | RATING5/10 — Technical |
The upper Fork above Basalt is running at a thin trickle with flows around 18 CFS near Aspen (USGS gauge 09073400). Do not let that number discourage you. The deeper holding pools and pocket water along this stretch are stacked with fish that have concentrated into every available piece of soft, slow water, and there is almost nobody out here fishing them.
Approach is everything in these conditions. Stay low, wade gingerly, keep your shadow off the water, and present flies with the shortest amount of leader and line possible. Midges are the dominant food source, with occasional Blue Winged Olives on warmer, overcast afternoons. Strikes will be subtle — watch your indicator or leader butt like a hawk.
| RECOMMENDED FLY PATTERNS | |
| Nymphs | Stott’s Raisinette #20, Tungsten Rainbow Warrior #20–22, BTS Baetis #20–22, Sparklewing RS2 #20–22, Pulsating Midge Emerger #20, Jigged Hot Orange Bead CDC PT #18–20, Flashtail Mini Egg Orange #18, Beadwing Midge Emerger Grey #20–22 |
| Dries | Dorsey’s Midge Emerger #22, Antonio’s Hi-Vis Quill Midge #20, Solitude Hatching Midge Black #22, Bill Fitzsimmons Trailing Shuck Midge #22–26 |
| Streamers | Craven’s Swim Coach, Barr’s Slumpbuster (small, natural), Carlton Banks, Craven’s Baby Gonga, Tim Heng’s Autumn Splendor |
| Tippet | 5X–6X fluorocarbon — err toward finer in this clarity |
MIDDLE ROARING FORK — Basalt to Carbondale
| USGS FLOW~175 CFS (at Basalt) | CLARITY:Clear | WATER TEMP: 44–46°F | RATING: 7/10 Excellent |
The middle river is fishing superbly right now. The Fryingpan confluence at Basalt injects cold, nutrient-rich tailwater that keeps the middle Fork in prime condition well into summer — and with the low-snowpack year keeping flows down, clarity is exceptional and wading is wide open. Access the river along Highway 82 and via the Rio Grande Trail for miles of walk-wade opportunity.
Blue Winged Olives are firing on overcast afternoons with increasing regularity. Water temperatures reaching 44–46°F are the ignition point for BWO emergences, and fish are actively rising in the slower seams and tailouts when the hatch comes off. Mornings call for a deep nymph rig with stonefly and midge patterns; after 11 AM be ready to switch to a dry or dry-dropper if you see any cloud cover. The streamer bite on big browns is also highly productive in low light. Watch the Crystal River confluence at Carbondale for any color dumped into the lower middle river after warm days or rain.
| RECOMMENDED FLY PATTERNS | |
| Nymphs | Jigged Tungsten Red-Tie PT #18–20, Tungsten 2-Bead Nymph Olive #18, Jigged Iron Lotus #18, Jigged Hare’s Ear #16–18, Stott’s Juggernaut #20, Stott’s Raisinette #20, Barr’s Emerger #18–22, Neon Nightmare #22–24, Bling Midge Charcoal/Tan #20–24, Flash Egg #18 |
| Dries | TC Sparkledun BWO #18–22, Harrop’s CDC Biot Dun BWO #20–22, Parachute Adams #18–20, Sprout Midge #20–22, Antonio’s Hi-Vis Midge #22–24, McCannel’s Massacre Midge #22–24, Dorsey’s Midge Emerger #22–24 |
| Streamers | Tungsten Double Mint, Tungsten Thin Mint, Craven’s Baby Gonga, Carlton Banks, Circus Peanut, Tim Heng’s Autumn Splendor |
| Dry-Dropper | Coachman Trude #14–16 or Chubby Chernobyl #14 with Jigged Hare’s Ear or RS2 #18–20 trailing 14″ back |
| Tippet | 5X fluorocarbon for nymphing; 5X–6X copolymer for dry fly work |
LOWER ROARING FORK — Carbondale to Glenwood Springs
| USGS FLOW~358 CFS (Glenwood) | CLARITY: Clear | WATER TEMP: 46°F | RATING: 8/10 — Prime |
The lower Fork from Carbondale to Glenwood Springs is the star of the valley right now. Flows sitting around 358 CFS at the Glenwood USGS gauge make this stretch extremely accessible to wade anglers — normally this section requires a drift boat except at low summer flows. The Rio Grande Trail provides walk-in access to miles of prime water, and Two Rivers Park in Glenwood gives good public wading at the Colorado confluence.
Blue Winged Olives and Caddis are the hatch to watch. Afternoon emergences are now a daily event on overcast days, with trout rising in the slow seams and glassy tailouts in a way that brings out even the most confirmed nymphers. The BWO window typically runs 11 AM to 3 PM. On sunny days, Caddis dominate and the nymph bite in deeper runs is excellent all day. Big browns are increasingly aggressive toward streamers — pound the banks in low light with a sink-tip for the best shot at a fish over 20 inches.
⚠️ SPAWNING CLOSURES: Rainbow trout spawn in spring. Seasonal closures are periodically in effect at tributary mouths — watch for posted signs and always respect active redds (light-colored, cleaned gravel patches in tailouts).
| RECOMMENDED FLY PATTERNS | |
| Nymphs | Pat’s Rubber Legs #12–14, 20-Incher Stone #12–14, RS2 (Gray/Olive) #18–22, Juju Baetis #20–22, Jigged Iron Lotus #16–18, Barr’s Emerger #18–22, Egg Pattern #16–18, Freestone Emerger #20, Prince Nymph #14-16 |
| Dries—BWO | TC Sparkledun BWO #18–22, Collette’s BWO #18–22, Parachute Adams #18–24, Hatching BWO #20 |
| Dries—Caddis | Elk Hair Caddis #14-16, Missing Link #14-16 |
| Streamers | Dungeon #2–4, Goldie #4, Circus Peanut #4, Barr’s Slumpbuster #6, Autumn Splendor #4–6, Craven’s Swim Coach — sink-tip line recommended on 6wt |
| Tippet | 4X–5X for nymphing; 5X–6X fluorocarbon for BWO/midge dries |
FRYINGPAN RIVER
The Fryingpan River is arguably Colorado’s most celebrated tailwater fishery. Running 14 Gold Medal miles from below Ruedi Reservoir Dam to the Roaring Fork at Basalt, the Pan is dam controlled and therefore largely immune to the snowpack drama affecting other valley rivers. Mysis shrimp pumped through the reservoir turbines year-round produce quality rainbows and browns. Bureau of Reclamation recently bumped flows to 205 CFS (up from the 41 CFS held through winter), which has stirred up the fish and improved the hatch activity considerably.
UPPER FRYINGPAN — Mile Marker 8 to Ruedi Dam (Holy Water)
| USGS FLOW~205 CFS (bumped) | CLARITYClearing | WATER TEMP44°F | RATING7/10 (9/10 cloudy) |
The Eupperr stretch just below the dam holds some of the largest trout most fly anglers will ever encounter. The recent flow bump from 41 to 205 CFS has the fish fired up, and the water is rapidly clearing. This is the most technical section of river in the valley, fish have seen every presentation imaginable and require precision, stealth, and the finest tippets you can manage. Fryingpan fish will not tolerate hero casting or laying line and indicator over them. They’ll shut down immediately.
Midges remain the dominant food source in this section, with BWO nymphs increasingly active as water temperatures climb. Mysis shrimp are always a factor and should stay in your nymph rotation, especially within the first mile below the dam. Keep nymph patterns slim and dark; the fish can pick out anything that doesn’t look right in this clarity.
| RECOMMENDED FLY PATTERNS | |
| Nymphs | Barr’s Emerger BWO #20–22, Barr’s Black Back Emerger #20–22, Stott’s Good Carl #20, Dorsey’s Mercury RS2 Gray #20–22, Skinny-tied Pheasant Tail #20–24, TC Candy Cane Midge #18–22, Tim’s Mysis #16–18, Will’s Epoxy Mysis #18–20, Craven’s Mysis #16–18, Killer Mayfly Olive/Brown #22 |
| Dries | HOH Hanging Midge Grey/Black #20–22, Mole Midge #20–24, Roy Palm’s Special Frying Pan Emerger #20–22, Bill’s Midge Emerger #20–22, Dorsey’s Midge Emerger #22–24, McCannel’s Massacre Midge #22–24, Parachute Adams #20–22 |
| Streamers | Barr’s Slumpbuster (natural, small), Borski’s Bonefish Slider, Tim Heng’s Autumn Splendor, Tungsten Thin Mint, Craven’s Swim Coach — keep them small and slow |
| Tippet | 6X minimum; 7X for ultra-selective fish — never skip fluorocarbon here |
MIDDLE FRYINGPAN — Mile Marker 4 to Mile Marker 8
The middle river fishes with the same hatches as the upper, but with significantly less pressure and a plethora of public access. Hatches can be slightly less consistent here, but on a warm, overcast day the middle Pan can be stunning. It also has some of the best streamer water on the entire river. Keep moving if you’re not finding fish — there are quiet zones and red-hot zones, and discovery is part of the fun. Dry-dropper rigs with a Parachute Adams or Elk Hair Caddis over a small nymph work well through this section.
LOWER FRYINGPAN — Basalt to Mile Marker 4
The lower Pan is where the river’s character transitions from tailwater precision to freestone fun. Fish here see considerably fewer flies and are often more willing. BWOs and midges are active, early caddis are starting to appear, and the dry-dropper game is excellent. The fish from the Fork push up into this section in big numbers. Good public and private water is mixed throughout — a detailed access map or local guide is helpful. Watch for spawning beds in this stretch; please avoid fishing over them.
LOWER COLORADO RIVER — Glenwood Springs to Rifle
| USGS FLOW~1,130 CFS (below GWS) | CLARITYClear | WATER TEMP44–46°F | RATING7/10 — Float It |
The Lower Colorado River from Glenwood Springs downstream through the Glenwood Canyon and out to the Silt/Rifle area is a big-water fishery that rewards anglers willing to float it in a drift boat. Water is running at approximately 1,130 CFS at the below-Glenwood Springs gauge (USGS 09085150), which is clear and very fishable.
Spring BWO and midge hatches are the story right now, firing reliably on overcast afternoons along the softer seams and banks. As we move toward May, stonefly nymph patterns and caddis setups become increasingly important. Annual spawning closures are in effect at Grizzly, Canyon, Castle, and Elk Creeks on the Colorado until June 1 — watch for posted signs. For walk-wade access, the Glenwood Canyon bike path provides 13 miles of river-adjacent access, and Two Rivers Park in Glenwood Springs is the most accessible wade spot at the Roaring Fork confluence.
| RECOMMENDED FLY PATTERNS | |
| Nymphs | Pat’s Rubber Legs #10–14, 20-Incher Stone #10–12, Copper John #14–16, Pheasant Tail #16–18, Prince Nymph #14–16, RS2 #18–20, Perdigon #16–18, Egg Patterns #16–18, Caddis Larva #16–18 |
| Dries | Parachute Adams #16–20, TC Sparkledun BWO #18–22, Elk Hair Caddis #14–18 (emerging hatch), Griffith’s Gnat #18–20, Missing Link Caddis #16–18 |
| Streamers | Dungeon #2–4, Goldie #4, Circus Peanut #4, Sculpzilla #4, Rusty Trombone #4 — 6–7wt with sink-tip; slow strips near structure |
| Tippet | 2X–3X for streamers; 3X–4X for nymphing; 4X for dry fly presentations |
⚠️ ANNUAL SPAWNING CLOSURES in effect at Grizzly, Canyon, Castle, and Elk Creeks on the Lower Colorado through June 1. Watch for posted signs. Fishing is NOT affected on the main river stem.
CRYSTAL RIVER — Marble to Carbondale
| USGS FLOW~80–120 CFS | CLARITYClear–Clearing | WATER TEMP42–44°F | RATING6/10 — Underrated |
The Crystal River is the Roaring Fork Valley’s best-kept secret. Running nearly 35 miles through spectacular canyon and mountain scenery from the Elk Mountains above Marble (where the Lincoln Memorial and Tomb of the Unknown Soldier marble was quarried) down to its confluence with the Roaring Fork at Carbondale, the Crystal receives a fraction of the pressure of its famous neighbors while still holding excellent populations of browns, rainbows, cutthroat, and brookies in the 8–16 inch range.
The Crystal is not dam-controlled, making it sensitive to temperature swings and precipitation. In a normal year, serious runoff from the upper drainage arrives in May–June, but with the 2026 low-snowpack conditions, flows are well below average and the river is fishing in a clean, approachable state right now. Focus your efforts from Redstone upstream to access the best water with most reliable clarity. The lowest reaches near Carbondale are vulnerable to temporary coloring after warm afternoons as remaining snowmelt accelerates — this is also why the lower Roaring Fork can occasionally show a tinge of color from Crystal runoff. Fish the upper Crystal early in the day and be ready to move if afternoon flows cloud up.
| RECOMMENDED FLY PATTERNS | |
| Nymphs | Barr’s BWO Emerger #18–20, Tungsten RS2 #20–22, Rainbow Warrior #18–20, Pheasant Tail #16–18, Hare’s Ear #14–16, Stonefly Nymph #12–14 (Little Brown), Perdigon #16–18, Egg Pattern #16 |
| Dries | Elk Hair Caddis #14–18, Parachute Adams #16–20, TC Sparkledun BWO #18–22, Stimulator #12–16, X-Caddis #16–18 |
| Streamers | Barr’s Slumpbuster (olive/natural), Craven’s Swim Coach, Woolly Bugger (black/olive) #8–10 |
| Dry-Dropper | Stimulator or Parachute Adams #14–16 + Hare’s Ear or Barr’s Emerger #16–18 behind — highly effective on this freestone water |
| Tippet | 4X–5X for nymphing; 5X for dry fly and dry-dropper |
VALLEY-WIDE HATCH CHART — April 28 to May 11, 2026
| INSECT / HATCH | SIZE | PEAK TIME | RIVERS & NOTES |
| Midges | #18–26 | All day; peak 10AM–2PM | All rivers. Primary food source year-round. Fryingpan & Fork most prolific. Size up toward 18–20 (“Midgezillas”) in warmer weather. |
| Blue Winged Olives (Baetis) | #18–22 | 11AM–3PM; best overcast | All rivers — lower Fork and Colorado best right now. Gray/olive body. Trigger: overcast skies, 44°F+ water. Hatches intensifying daily. |
| Stoneflies | #8–12 | Sub-surface all day | Fork (middle/lower), Crystal, Colorado River. Nymph only; adults rare. Lead fly in double-nymph rigs. |
| Early Caddis (Brown Sedge) | #14–18 | Late afternoon–evening | Colorado River, lower Fork, lower Pan. Emerging hatch; getting more consistent as May approaches. Adult patterns starting to produce. |
| Red Quill / March Brown | #14–16 | Midday; sporadic | Lower Roaring Fork and Colorado. Watch for pods of rising fish in softer water when this hatch fires. |
| Mysis Shrimp | #16–20 | Sub-surface all day | Fryingpan (Holy Water) year-round. Always carry imitations. Boosted by dam releases. Lead or dropper fly. |
| PMD (Pale Morning Dun) | #16–20 | Midday toward late May | Beginning to stir on Fryingpan and lower Fork. Will become increasingly important through May. Nymph now, watch for emergers soon. |
PRO TACTICS FOR LATE APRIL – EARLY MAY 2026
The Dry-Dropper Rig: Your Most Versatile Setup Right Now
With hatches increasing daily and clear water allowing fish to feed both sub-surface and on top, the dry-dropper rig is the single most effective setup on the Fork, Crystal, and lower Fryingpan right now. Rig a large, buoyant attractor dry (Coachman Trude #14–16, Chubby Chernobyl #14, or Stimulator #14) with 12–18 inches of 5X fluorocarbon dropping to a Hare’s Ear, Jigged PT, or RS2 #18–20. You cover both feeding levels and the dry doubles as a strike indicator.
Reading the BWO Window
BWO hatches are the premium event on the Fork and Colorado through this period. The trigger is reliably overcast skies combined with water temperatures in the 44–48°F range. When clouds thicken, stop nymphing and get a dry fly rigged. Rising fish appear in the soft seams, flat tailouts, and behind boulders, often in water so shallow you’d never expect them. The hatch typically runs 11 AM to 2–3 PM. Match the size carefully (usually #18–20).
Stealth in Low Clear Water
2026 is a low-water year, and that means fish are spooky. This applies everywhere from the upper Fork to the Fryingpan to the Crystal. Wade slowly, stay low, approach from downstream, cast from further away than you think you need to, and minimize line-slap on the water. On the Fryingpan especially, laying your leader or indicator line over the fish before your fly arrives will shut them down immediately.
Timing Your Day
The best fishing window on all four rivers right now is 10 AM to 3 PM. Before 10, fish are in deepest holding water and sub-surface nymphing is your best bet. Between 10 and 3, water temps climb to the hatching threshold and BWOs, midges, and caddis (on the Colorado and lower Fork) become increasingly active. After 3 PM on warm days.
Streamers for Big Browns
Low, clear water doesn’t shut down the streamer bite, it just requires smaller patterns and more natural colors. Fish are territorial and competitive. A 5–6wt rod with a sink-tip line, 1–3X tippet, and a natural-colored Slumpbuster, Swim Coach, or Autumn Splendor fished on a slow strip along undercut banks, behind boulders, and in deep edge troughs will bring out the biggest fish in the system. Early morning and late afternoon are the best windows; low light is your friend.
USGS FLOW GAUGES — REAL-TIME DATA LINKS
Always check flows before heading out. Conditions can change rapidly, particularly on the Crystal River and lower Roaring Fork after warm afternoons or rain events. All flows are provisional data updated in real time.
Licenses & Gold Medal Waters
A valid Colorado fishing license is required for all anglers 16 and older. Purchase at cpw.state.co.us or any licensed retailer. The Fryingpan River from Ruedi Dam to Basalt and the Roaring Fork from the Fryingpan confluence to the Colorado River are both Gold Medal designated waters with special regulations. On the Fryingpan Gold Medal section: fly and lure only; catch-and-release for all trout except brown trout (2-fish bag limit, minimum 16 inches). Always consult the current CPW regulations booklet for complete rules.
Aquatic Invasive Species: Clean, Drain, Dry
Colorado’s rivers face serious threats from invasive species including New Zealand Mudsnails and Whirling Disease. ALWAYS clean, drain, and completely dry all wading equipment, boats, and gear before moving between watersheds. This is Colorado law and a critical conservation responsibility. More information at cpw.state.co.us/learn/Pages/AquaticNuisanceSpecies.aspx
Spawning Fish
Rainbow trout are currently spawning throughout the valley. Please avoid wading over, casting to, or wading through active spawning redds (bright, visibly cleaned gravel patches in shallow tailouts and riffles). If you see paired fish finning in shallow water, simply move on. The future of the fishery depends on it.
TIGHT LINES FROM GONEFISHINGCOLORADO.COM
The Roaring Fork Valley delivers some of the finest dry fly fishing in the American West. This spring’s low-water conditions are a gift — fishable, clear, and full of rising trout. Get out there.
