San Juan River Fly Fishing Report
San Juan River at Pagosa Springs. This is the Colorado headwaters stretch near Pagosa Springs, not the well-known New Mexico tailwater below Navajo Dam. Guides and local shops report an ideal wade-fishing window of roughly 150–800 cfs (Upper San Juan WEP angling study (2021), Table 11). Live gauge data below updates automatically.
What's swimming in the San Juan River
- This entry covers the Colorado stretch of the San Juan near Pagosa Springs, not the well-known New Mexico tailwater below Navajo Dam.
- Pagosa Troutfitters rates Rainbow Trout as "high" probability given a long stocking history, Brown Trout as "good" probability, Brook Trout possible in tributaries, and San Juan-lineage Cutthroat Trout as native but conservation-sensitive and not a typical catch (Pagosa Troutfitters).
- Secondary guides disagree on Brown-versus-Rainbow dominance and on how broadly Cutthroat and Kokanee reports apply. TroutTips supports the established Brown/Rainbow town fishery without claiming measured catch odds; upstream or reservoir-linked species require their own reach evidence (AvidMax; Pagosa Troutfitters).
- CPW issued a voluntary noon-to-midnight fishing closure on this exact reach, from the Highway 160/84 bridge to Yamaguchi Park, during a 2026 heat event (CPW news, Jul 13, 2026).
- From the Highway 160/84 bridge to Apache Street (including the River Center Ponds), regulations set a 2-trout limit; the reach is not Gold Medal water (CPW 2024 fishing brochure).
Rivers and creeks that flow into the San Juan River
5 hold fish on Colorado Parks and Wildlife's records, listed from the headwaters down. Open one for where to fish and its rules.
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East Fork San Juan River Brown, rainbow, cutthroat and brook trout
Where to fish
San Juan National Forest
CPW access point · Medium access · Stocked with catchable and young trout
About it
It joins the San Juan River about 9 miles NE of Pagosa Springs. It flows year-round.
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West Fork San Juan River Brown and rainbow trout
Where to fish
Weminuche Wilderness Area
CPW access point · Difficult access
About it
It joins the San Juan River about 9 miles NE of Pagosa Springs. It flows year-round.
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Rio Blanco Brown and rainbow trout
Where to fish
National forest stretch
About 10 miles up the creek · Forest Road 656, open May 15 to Dec 14
CPW special rules
From the headwaters downstream to the San Juan Wilderness boundary
- Artificial flies and lures only.
- Cutthroat must be returned to water immediately.
About it
It joins the San Juan River about 10 miles S of Pagosa Springs. It flows year-round.
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Navajo River Brown, cutthroat and brook trout
Where to fish
We found no CPW access point or public-land stretch on it. Check land ownership before you fish.
CPW special rules
From the headwaters downstream to Bridal Veil Falls
- Artificial flies and lures only.
- Cutthroat must be returned to water immediately.
From the Oso Diversion Dam downstream to the state line
- No bag or possession limit for channel catfish, largemouth bass, smallmouth bass, northern pike, walleye, green sunfish, bluegill, bullhead, yellow perch or crappie.
About it
It joins the San Juan River about 15 miles E of Arboles. It flows year-round.
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Piedra River Brown and rainbow trout
Where to fish
National forest stretch
About 41 miles up the river · Forest Road 631
CPW special rules
From the Piedra River bridge on USFS 631 (Piedra Road) downstream to the lower boundary of the Tres Piedra Ranch (1.5 miles above US 160)
- Artificial flies and lures only.
- All trout must be returned to water immediately.
From the US 160 bridge downstream to Navajo Reservoir
- No bag or possession limit for channel catfish, largemouth bass, smallmouth bass, northern pike, walleye, green sunfish, bluegill, bullhead, yellow perch or crappie.
About it
It joins the San Juan River at Arboles. It flows year-round.
Show 12 more named tributaries (no CPW fish data)
These also flow straight into the San Juan River. Colorado Parks and Wildlife has no fish data for them; some may still hold fish.
- Johnny Creek
- Turkey Creek
- Coal Creek
- Fourmile Creek
- McCabe Creek
- Mill Creek
- Montezuma Creek
- Cat Creek
- Arroyo Escondido
- Tohache Wash
- Toh Dahstini Wash
- Cowboy Wash
Species and special rules are Colorado Parks and Wildlife's. Statewide rules apply everywhere. Before you fish, check land ownership, CPW's current regulations and its temporary closures for drought and low water.
How we pick these
Species are CPW's records from its Fishing Atlas. A creek missing from this list may still hold fish; CPW simply has no record for it. The list runs in the order each one joins the San Juan River, from the headwaters down, and "joins" names the nearest town to where it does on the same side of the mountains: a Census place, or a town with its own post office. Flow is how USGS maps each channel, not a live reading.
Special rules are the ones CPW writes for each creek in its Fishing Atlas. Rules CPW writes for the river itself, such as closures around a creek's mouth, are not repeated on the creek, and no directions lead into water CPW closes all year.
A national forest stretch is one that both the Forest Service's and BLM's ownership maps show as national forest for at least half a mile of the creek, with a road on the Forest Service's motor vehicle map within 500 feet; directions go to that road. Maps can be wrong and road seasons change. Away from CPW access points, check land ownership before you fish.
Getting to the San Juan River
The named in-town access points come from the Pagosa Springs tourism office's fishing brochure rather than a municipal parks page.
- Downtown access behind the River Center, Town Park, the Visitor Center, and Yamaguchi Park -- regularly stocked water, good for kids/beginners (Visit Pagosa Springs). Town parks are open dawn to dusk (Visit Pagosa Springs).
- East Fork and West Fork of the San Juan, both a short drive up Hwy 160 -- bank/road access with nearby campgrounds; portions of the West Fork cross private property (Visit Pagosa Springs).
- US 160/84 junction downstream through Pagosa Springs to Apache Street (covers the tracked stretch): trout bag/possession limit of 2 (CPW special regulations). In July 2026, CPW asked anglers not to fish after noon on the downtown San Juan stretch as water temperatures approached 71°F (Pagosa Daily Post).
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What’s hatching on the San Juan River
8 insects, from the published hatch charts of 1 fly shop, guides and fishing sites. Tap an insect to see where its dates come from. Every river, month by month →
MidgesApr 1 – May 8 and Aug 1 – Nov 24 · hook #16–202 sources
CaddisApr 16 – May 8 and Jun 16 – Aug 24 · hook #10–202 sources
Golden StonefliesJun 16 – Jul 24 · hook #6–181 source
Where these dates come from:
- Fly Shack “Golden Stonefly”: Jun 16 – Jul 24 · #6-18
Green DrakesJul 1 – Aug 8 · hook #10–121 source
Where these dates come from:
- Fly Shack “Green Drake”: Jul 1 – Aug 8 · #10-12
Hoppers & terrestrialsJul 1 – Oct 8 · hook #8–201 source
Where these dates come from:
- Fly Shack “Terrestrials (various)”: Jul 1 – Oct 8 · #8-20
Pale Morning Duns (PMD)Jul 1 – Aug 8 · hook #14–181 source
Where these dates come from:
- Fly Shack “Pale Morning Dun”: Jul 1 – Aug 8 · #14-18
Blue-Winged Olives (BWO)Jul 16 – Oct 8 · hook #12–201 source
Where these dates come from:
- Fly Shack “Blue Winged Olive”: Jul 16 – Oct 8 · #12-20
Some sources list only months, not days, so treat the dates as a guide and check conditions before you go.
6 fly pairings from real fishing reports
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Fly shops on the San Juan River
San Juan River fly fishing questions
What is a good flow (cfs) to fish the San Juan River?
Guides and local shops report an ideal wade-fishing window of roughly 150–800 cfs on the San Juan River (Upper San Juan WEP angling study (2021), Table 11). TroutTips shows the live current reading against this range so you can check before you go.
Is the San Juan River designated Gold Medal water?
No, the San Juan River does not currently carry Colorado Parks and Wildlife's Gold Medal water designation.
What flies work on the San Juan River?
TroutTips tracks 6 fly pairings reported specifically on the San Juan River, each tied to a season and a real source. See the Fly Pairings section on this page for the full list.
Are there fly shops near the San Juan River?
Yes, Duranglers Flies & Supplies, Williams Creek Angler, Let It Fly, Pagosa Troutfitters, Piedra River Anglers guide this river. See the Nearby Fly Shops section on this page for details.