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This report does not describe this as a primary mode. Verify legal access, depth, launches, and retreat options before planning around it.
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Fly fishing report · Southwest
San Juan River
A below-Navajo-Dam San Juan report for Quality Water trout, technical midge fishing, release checks, access, regulations, and trip planning.
Check flow & weatherToday's fishing decisionMost live data available
82
Go now
San Juan River looks fishable right now.
Current USGS flow is 843 cfs and has been stable for about 6 hours. Today's flow is near the high side of the normal seasonal range, which tops out near 848 cfs. This is near the high side of normal, so be careful about wading, clarity, and pushy current before calling it good.
Best supported approachBank / edge
Watch nextFlow: Current USGS flow is 843 cfs and has been stable for about 6 hours. Today's flow is near the high side of the normal seasonal range, which tops out near 848 cfs.
Updated Aug 3, 12:51 AM UTCUsually refreshes about every 45 minutes
Best supported approachBank / edge
Compare wading, bank fishing, and floating before choosing how you will fish.
Bank / edge · Best fit82/100
Bank and edge fishing remains a practical low-commitment option if access is legal and footing is safe.
Float82/100
A float is in play where this report supports boat access and wind, releases, and shuttle logistics are manageable.
Check before you drive
Current flow and weather.
Look at whether the river is rising or falling, then check wind, rain, and storms. These can change both safety and fishing.
Loading current flow and weather.
Before you rely on this report
How current is this report?
Conditions can change quickly. Check these dates before you decide to fish, and open the official source when safety or rules matter.
- River conditions
- Checked Aug 2, 2026, 8:51 PM
- Fishing guidance
- Reviewed May 31, 2026
- Public access
- No reviewed map pin available
- Rules and closures
- Official rule links checked
High confidence in the current score inputs.
8 sources are listed below for you to open.
3 public access records are listed. Private spots are never shown.
Source checked Jul 30, 2026
Plan your access
Know where you can enter.
These are public parking, launch, trail, or recreation areas—not secret fishing spots. We never show an angler's private pins, notes, or photos here.
- 0
- Shown on map
- 3
- No map pin
Location checkedDescription only
01No map pin
Area description
Navajo Dam and Quality Water
Primary special-regulation tailwater focus for this report.
Restrictions and seasonal notes
Navajo Lake State Park manages key river access, day-use areas, camping, and visitor logistics.
Do not assume every bank or trail is open in the same way; check current state park notices.
02No map pin
Area description
Texas Hole and Flats context
Well-known tailwater areas where crowds, drift quality, and etiquette matter.
Restrictions and seasonal notes
Navajo Lake State Park manages key river access, day-use areas, camping, and visitor logistics.
Do not assume every bank or trail is open in the same way; check current state park notices.
03No map pin
Public land
Crusher Hole and lower access
Use current state park and NMDGF information before choosing a lower reach.
Restrictions and seasonal notes
Navajo Lake State Park manages key river access, day-use areas, camping, and visitor logistics.
Do not assume every bank or trail is open in the same way; check current state park notices.
How to fish it
Expect technical tailwater fishing, not easy trout.
The San Juan below Navajo Dam is one of New Mexico's best-known trout tailwaters. It rewards flow checks, small flies, long drifts, and careful handling more than blind casting.
- Use the Archuleta gauge and release context before choosing a wade or boat plan.
- Quality Water rules and tackle limits matter, so check the current New Mexico rule book.
- Start with midges and BWOs, then adjust to fish behavior and water clarity.
- Crowds are part of the fishery; have a section, timing, and etiquette plan before arriving.
Why the score looks this way
FlowUse caution
USGS shows 843 cfs with a stable over about 6 hours trend. Today's flow is near the high side of the normal seasonal range, which tops out near 848 cfs. This is near the high side of normal, so be careful about wading, clarity, and pushy current before calling it good.
SeasonHelps score
Summer: Cold releases keep trout options open, but crowds and weeds can matter.
Water temperatureHelps score
USGS water temperature is about 55F, with no heat stop triggered.
Public alertsHelps score
No active NWS alert was returned for this forecast point.
Fishing usefulnessHelps score
Skip exposed wading when releases rise, weeds make footing and drifts poor, winter weather adds ice risk, or the Quality Water rule and access boundary are not clear.
Read the water
What changes the plan.
The San Juan can fish year-round because Navajo Dam releases cold water, but flows, pressure, weeds, and weather decide the best tactic. Slow down, fish lighter, and change depth before changing every fly in the box.
Stable release
Fish long midge or BWO drifts, adjust depth, and work feeding lanes patiently.
Higher release
Use heavier rigs, protected edges, and avoid unsafe crossings.
Low clear water
Use smaller flies, lighter tippet, and longer leaders with clean presentations.
Weedy water
Clean flies often and fish lanes where rigs can drift without fouling.
Your trip plan
Know when to go—and when to skip it.
Best flows
Use RiverReports Archuleta and USGS 09355500 as the primary release trend, then compare current Navajo Dam and state-park context before choosing a wade depth or boat day.
When to skip
Skip exposed wading when releases rise, weeds make footing and drifts poor, winter weather adds ice risk, or the Quality Water rule and access boundary are not clear.
Local plan
Start with the Archuleta gauge, NMDGF rules, and Navajo Lake State Park notices. Pick one access area, rig small midge/BWO options, and carry a backup plan for crowds.
Backup water
If the San Juan is crowded, weedy, or release-complicated, compare the Chama, Pecos, or Cimarron reports before forcing a technical tailwater day.
Hatches & flies
Bring a flexible box.
TimingWhat to watchUseful flies
March to AprilMidges, BWOs, early caddis, and small stonefliesZebra midge, RS2, BWO emerger, caddis pupa, small black stonefly
Fly pattern · report suggests “Zebra midge”Zebra MidgeLook for a very slim tapered thread body, evenly spaced contrasting wire rib, a small bead, and no tail or wing. The reviewed classic is black with silver wire and a silver bead. Red, olive, brown, glass-bead, jig-hook, resin-coated, or tailed forms must remain labeled variations rather than replacing the classic identity.See photos & how to fish it ↗
Fly pattern · report suggests “RS2”RS2Start with the beadless architecture: two dark-dun Microfibett tails separated behind a slim, tightly twisted and visibly segmented dubbed abdomen; a fuller thorax; and saddle-hackle web clipped into a short angled wing bud. Rim Chung's original-style form uses natural beaver dubbing and hackle web. CDC- or Antron-wing ties, beads, curved hooks, flash, and tailless Avatar-style flies must remain labeled variations.See photos & how to fish it ↗+ 3 more reviewed guides in the Fly Box May to JuneCaddis, PMDs, yellow sallies, golden stones, and runoff-edge bugsElk hair caddis, PMD emerger, yellow sally, Pat's rubber legs, hare's ear
Fly pattern · report suggests “Elk hair caddis”Elk Hair CaddisLook for a tented elk- or deer-hair wing, clipped hair head, dubbed body, rib, and hackle palmered along the body. The body color should be labeled because tiers often match different natural caddis colors.See photos & how to fish it ↗
Fly family · report suggests “PMD emerger”Pale Morning Dun PatternsPMD names an insect group, not one fly. Pale nymphs, trailing-shuck emergers, upright or low-riding duns, cripples, and spent-wing spinners stay visibly separate.See family guide ↗+ 3 more reviewed guides in the Fly Box July to SeptemberTerrestrials, caddis, tricos, midges, and small mayfliesFoam ant, beetle, hopper-dropper, trico spinner, parachute Adams
Fly family · report suggests “Foam ant”Ant PatternsAnt patterns can be foam, fur-bodied, winged, or sunken. The narrow waist and paired body lobes matter more than one material recipe.See family guide ↗
Fly family · report suggests “beetle”Beetle PatternsBeetle flies range from simple foam shells to hair-bodied and sunken forms. A rounded back and compact profile distinguish the family from ants and hoppers.See family guide ↗+ 2 more reviewed guides in the Fly Box October to winterMidges, BWOs, eggs where legal, leeches, and low-light streamer windowsMidge pupa, BWO, egg pattern where legal, leech, small sculpin
Fly family · report suggests “Midge pupa”Midge Patterns by StageMidge wording can mean a threadlike larva, wing-padded pupa, film emerger, tiny adult, or visible cluster. Those profiles fish at different depths.See family guide ↗
Fly family · report suggests “BWO”Blue-Winged Olive PatternsBWO describes a hatch group, not one fly. Nymph, emerger, dry, cripple, and spinner profiles must stay separate because they occupy different parts of the water column.See family guide ↗+ 3 more reviewed guides in the Fly Box 01
Start with a two-fly midge or BWO rig when rules allow, then adjust depth before changing patterns.
02
Use small indicators, long drifts, and careful mends through slow slicks and flats.
03
Fish streamers or leeches in low light, on edges, or when releases add movement.
04
Watch other anglers' spacing and avoid stepping into active feeding lanes.
05
Carry a thermometer and landing net even though the tailwater is cold; quick handling still matters.
Rules & closures
Check the official rules before you go.
Open the agency page to confirm the exact river section, species, season, tackle rules, limits, and emergency closures.
Official links checkedRules for this river or sectionNo special rule found
We did not find a special rule for this river.
We checked the state source but did not find a clearly supported exception for this river. Check the official rules for the exact section you plan to fish.
Rules checkedJul 30, 2026
Report a correction ↗Always follow the official rule
This summary helps with trip planning. The linked agency rule is the one you must follow.
Updates from anglers
What anglers are seeing.
Recent observations from general areas of San Juan River. We review every update before it appears and never publish exact fishing spots, private access details, or photo locations.
Angler updates are not loading right now.
You can still use the river plan above. Check back later for recent observations from other anglers.
Where this report comes from
Open the sources we checked.
Fishing guidance checked: May 31, 2026
Site check: Jul 14, 2026. We regularly test report links, live scores, flow and weather data, and page loading. The content date changes only when the fishing guidance or its sources change.
flowRiverReports San Juan River near ArchuletaflowUSGS San Juan River near Archuleta 09355500regulationNew Mexico 2026-2027 Fishing Rules and InformationregulationNew Mexico general fishing regulationsaccessNavajo Lake State ParkbackgroundNMDGF fisheries management: San Juan RiveraccessNMDGF San Juan Fishing Easement WMA mapsafetyNational Weather Service forecast point
Common questions
Before you leave.
What should I check first before fishing the San Juan River?+
Check the Navajo Dam release, Archuleta gauge, Quality Water rules, state park notices, and the NWS forecast.
Are there special regulations on the San Juan River?+
Yes. The Quality Water and Special Trout Water rules are central to fishing this river legally.
What flies should I bring for the San Juan River?+
Bring the hatch-chart flies, a small nymph box, and a few streamers. Then adjust for water temperature, clarity, pressure, and the insects or baitfish you actually see.
Can I wade the San Juan River?+
Yes in many tailwater areas, but releases, weeds, and cold water make conservative wading important.
When should I skip the San Juan River?+
Skip it when flows are unsafe, water is too warm for trout, emergency closures are active, or legal access for the reach is not clear.