San Juan River: Pagosa Springs

San Juan River: Pagosa Springs — Fishing Report for April 24, 2026

Quick Stats

Flow: 359 CFS | Trend: Stable | Fishability: Fair | Weather: Mostly Sunny, High 63°F

The Bite

Here's the honest picture for today: the San Juan at Pagosa is running at 359 CFS — more than double the upper end of the typical late-April range and a clear sign that snowmelt is already moving through the system. With snowpack sitting at just 10% of normal basin-wide, this pulse likely came from the warm stretch rather than a deep mountain snowpack, which means the runoff window may be shorter and earlier than usual. The river is still fishable, but wading is going to feel pushy, and the classic pre-runoff dry fly window that makes April legendary here has largely closed for now.

Today's bluebird skies and 63°F high work against the BWO hatch — Baetis need overcast, drizzly conditions to come off in numbers, and a bright sunny afternoon won't deliver that. Don't expect the blanket hatches the guide tip describes. Midges may provide some surface activity in the slower, warmer stretches near the hot spring influence early in the morning, but the bulk of today's action will be subsurface. Fish are likely holding in deeper slots and the slower inside bends where they don't have to fight the current — that's where your nymphs need to be.

The more interesting opportunity is Sunday. Showers and thunderstorms are forecast through Sunday and into Sunday night, and that cloud cover could flip the switch on BWO activity. If you have flexibility in your schedule, Sunday afternoon may offer the best dry fly conditions of the weekend despite the weather — or perhaps because of it.

What to Fish

• Pheasant Tail Nymph #18 — Point fly in a double-nymph rig; dead-drift through deeper runs and seams. The workhorse today.
• Barr's Emerger (BWO) #20 — Trailing 14–16" above the Pheasant Tail as a dropper; fish it in the slower water near the surface film.
• RS2 #20-22 — Effective in the tailouts and softer water; try it as a single fly in shallower, slower sections.
• Griffith's Gnat #18-20 — Worth a shot in the morning near thermal-influenced stretches where midge activity may linger.
• Sparkle Dun BWO #18-20 — Hold this one for Sunday if the cloud cover arrives as forecast and fish start looking up.
• Parachute BWO #18-20 — Backup dry for Sunday's potential hatch window; easier to track in choppy water than the Sparkle Dun.

Tactics & Rigging

With flows elevated and wading demanding, position matters more than usual today. Look for inside bends, current breaks behind mid-stream boulders, and the slower water along cutbanks — fish won't be holding in the main current at these flows. Rig a weighted Pheasant Tail #18 on point with a Barr's Emerger #20 trailed 14–16" above it on a 10–12" tag off the main tippet. Run 5X fluorocarbon to the anchor and 6X to the emerger. Use enough split shot to get the rig to the bottom quickly — in higher, faster water, depth is everything.

If you find a slower, warmer stretch near the hot spring influence and see any surface dimpling, switch to a Griffith's Gnat on 6X and work it with a natural drift through the film. If Sunday's weather cooperates and BWOs start coming off, drop to 6X fluorocarbon with a Sparkle Dun and focus on individual rising fish — get into position downstream, present upstream, and let it ride the seam untouched. Refusals are common when fish are keyed on emergers; swap to an RS2 in the film before changing your position.

Access & Logistics

The town park stretch remains the most accessible entry point and is worth starting there — parking is easy and the water is well-suited to the current flows. Wading staff is strongly recommended today given the elevated CFS. Stick to shallower edges and avoid crossing in the main channel. Always verify current regulations with CPW before fishing — bag limit is 4 trout on this section, but rules can change.

Stop by Duranglers or a local Pagosa-area fly shop for current flies, on-the-water intel, and to support the shops that keep these fisheries healthy.

Looking Ahead

Sunday's storm system is the most interesting development this week — cloud cover and precipitation could trigger the BWO activity that today's sunshine is suppressing, so keep that window on your radar. With snowpack well below normal, expect flows to drop back into a more comfortable range sooner than a typical year, potentially reopening the classic pre-runoff dry fly fishing before May is out.