Cimarron River
Cimarron Canyon · Palisades · Philmont Ranch
NE New Mexico, USA
Open live forecast →Target species: Brown.
Stream gauge: 07208500. Flow and water temperature update on every refresh.
Weekly AI Outlook as of 06/05/26
At 2 cfs, the Cimarron is critically low — barely fishable and stressed. This early June timing normally offers prime PMD/caddis action as runoff recedes, but flows are running 80% below seasonal norms. Water temps will spike into the danger zone (70°F+) during afternoon heat waves forecasted through the weekend. Focus efforts on dawn and dusk in deeper canyon pools where fish seek thermal refuge. If you fish midday, keep sessions brief and avoid handling fish.
- Flow: 2 cfs — critically low for early June. Canyon pools still hold fish but approach with extreme care during heat stress.
- Hatches: PMDs and caddis should emerge midday if water temps stay under 68°F. Golden stones active in shade pockets.
- Water Temp: Likely spiking 70°F+ in afternoons with 87°F air temps. Dawn/dusk fishing essential for fish welfare.
- Best Window: First light to 8am, then again after 7pm. Avoid midday fishing during the heat wave — fish are stressed.
Generated weekly from live USGS gauge readings, weather forecasts, and recent fly shop reports. Updates Friday mornings.
About this Water
- Freestone
- Best months: Apr–Oct, peak June–Aug
The Cimarron River in northern New Mexico runs through Cimarron Canyon State Park — a steep, narrow gorge cut through the southern Rockies. The river is small, intimate, and intensely productive: tight casting through pocket water and plunge pools for wild brown trout and stocked rainbows. The canyon's red rock walls and dense cottonwoods give it a feel distinct from the larger New Mexico tailwaters. Hatch activity centers on caddis, BWO, and terrestrial fishing through summer afternoons.
The Cimarron flows through the Philmont Scout Ranch country and remains one of the most photographed small trout streams in the Southwest.
January Outlook
January on the Cimarron River in the Cimarron Canyon State Park, New Mexico is cold mountain winter. The canyon stream holds wild brown trout in clear, cold water below the Palisades.
Productive Patterns
- Zebra Midge
- RS2
- Hare's Ear
- Soft Hackle Midge
Tips
The Cimarron Canyon State Park protects a beautiful freestone stream in the Sangre de Cristo foothills. January fishing requires winter conditions preparation. The wild brown trout are present year-round in the canyon sections.
Water Notes
Water 36–44°F. Cold NE New Mexico mountain winter. US-64 through the canyon is maintained but ice is possible.
February Outlook
February on the Cimarron River is still cold but days lengthen and the fishing can be excellent. Midges and small nymphs through the deeper runs.
Productive Patterns
- Zebra Midge
- Baetis Nymph
- RS2
- Soft Hackle
Tips
February is quiet on the Cimarron. The wild brown trout population is healthy and the canyon is beautiful under winter conditions. Fish the deeper pools between the Palisades rock formations.
Water Notes
Water 38–46°F. Late winter. Cimarron Canyon State Park — state fishing license required. Canyon road accessible.
March Outlook
March on the Cimarron River brings early spring and the first Baetis hatches. The canyon views of the Palisades are spectacular in early spring light.
Productive Patterns
- Baetis Nymph
- RS2
- Hare's Ear
- Soft Hackle
Tips
March is an excellent early-season window on the Cimarron. Pre-runoff conditions offer good clarity. The wild browns are active after winter. Fish the canyon section inside Cimarron Canyon State Park.
Water Notes
Water 44–54°F. Pre-runoff conditions. Spring beginning. Palisades views are excellent.
April Outlook
April on the Cimarron River is a prime pre-runoff month. Baetis and early Caddis hatches begin. Wild brown trout are actively feeding in the canyon.
Productive Patterns
- Baetis Dry
- Elk Hair Caddis
- PMD Nymph
- Soft Hackle
Tips
April is prime time on the Cimarron — pre-runoff clarity, returning hatches, and active wild browns. The canyon is beautiful in early spring. Fish the sections within the state park boundary along US-64.
Water Notes
Water 48–58°F. Pre-runoff. Spring conditions. Baetis and caddis beginning. One of the Cimarron's best months.
May Outlook
May on the Cimarron River can mean high spring runoff as Sangre de Cristo snowmelt peaks. Early May can be excellent but flows often rise significantly by mid-month.
Productive Patterns
- Golden Stonefly Nymph
- Sculpin
- Elk Hair Caddis
- PMD Dry
Tips
Fish early May before runoff peaks. The Cimarron can run high in May — check USGS 07208500 for current conditions. In normal years, some sections remain fishable. The canyon stonefly hatches begin.
Water Notes
Runoff peak in May. Flows variable. Water 52–62°F. Monitor USGS 07208500 before visiting.
June Outlook
June on the Cimarron River as runoff recedes. Late June typically offers improving conditions. PMD, Caddis, and Golden Stonefly are the primary patterns.
Productive Patterns
- PMD Dry
- Elk Hair Caddis
- Golden Stonefly Dry
- Stimulator
Tips
Late June is prime time on the Cimarron as runoff subsides. The canyon is spectacular in early summer. Wild brown trout rising to PMDs and caddis in the canyon pools is a highlight of New Mexico fly fishing.
Water Notes
Flows dropping in June. Water 56–64°F. Clearing by late June. Cimarron Canyon is stunning in summer.
July Outlook
July on the Cimarron River is summer with terrestrials and morning hatches. The New Mexico monsoon season begins, bringing afternoon thunderstorms to the Sangre de Cristo.
Productive Patterns
- Hopper
- Ant
- PMD
- Stimulator
Tips
July on the Cimarron is terrestrial season. Fish morning and evening — afternoon monsoon storms can bring lightning and rapidly rising water. The canyon provides some shelter but watch the weather. Hopper-dropper rigs are productive.
Water Notes
Water 60–68°F. Monsoon season July–September. Afternoon thunderstorms possible. Fish morning.
August Outlook
August on the Cimarron River is peak monsoon season with afternoon thunderstorms common. Morning fishing is productive with terrestrials. Wild brown trout are in excellent condition.
Productive Patterns
- Hopper
- Beetle
- Ant
- Morning PMD
Tips
August morning fishing on the Cimarron before the afternoon monsoons can be exceptional. The canyon scenery is lush from monsoon rains. Be lightning-aware — the narrow canyon concentrates weather. Check forecasts each morning.
Water Notes
Water 62–70°F. Peak monsoon. Afternoon lightning and flooding risk. Fish mornings only. Leave canyon by noon.
September Outlook
September on the Cimarron River sees the monsoon season ending and excellent fall fishing beginning. Baetis and Caddis hatches return. Wild brown trout are active.
Productive Patterns
- Baetis Dry
- Elk Hair Caddis
- Hopper
- Soft Hackle
Tips
September is one of the Cimarron's finest months — the monsoons begin to subside, temperatures cool, and the wild browns become more active. The canyon aspen and cottonwood begin turning gold. A beautiful time on this New Mexico gem.
Water Notes
Water 56–64°F. Monsoons subsiding. Cooling temps. Clarity improving. Excellent fall conditions.
October Outlook
October on the Cimarron River is prime fall fishing. Baetis hatches are excellent, wild brown trout are pre-spawn, and the canyon aspen are at peak color. One of New Mexico's finest fall fishing experiences.
Productive Patterns
- BWO Parachute
- Streamer
- Hare's Ear
- Egg Pattern
Tips
October on the Cimarron Canyon is extraordinary — peak fall color, excellent Baetis hatches, and wild brown trout in peak pre-spawn condition. Less pressure than August. The canyon in October is often described as New Mexico's finest trout fishing.
Water Notes
Water 48–56°F. Excellent clarity. Fall conditions. Brown trout pre-spawn. Canyon aspen spectacular.
November Outlook
November on the Cimarron River is late fall. Midge and Baetis hatches continue on warmer afternoons. The canyon is quiet and wild brown trout are active post-spawn.
Productive Patterns
- Zebra Midge
- BWO Nymph
- RS2
- Soft Hackle
Tips
November is a peaceful and productive month on the Cimarron. The wild brown trout post-spawn are recovering and feeding actively. Minimal pressure on this often-overlooked New Mexico trout stream.
Water Notes
Water 42–52°F. Late fall. Post-spawn browns. Cimarron Canyon State Park year-round access.
December Outlook
December on the Cimarron River is winter in the canyon. Cold conditions but the wild brown trout are present year-round. Midge fishing in the deep pools.
Productive Patterns
- Zebra Midge
- RS2
- Soft Hackle Midge
- Hare's Ear
Tips
December fishing in Cimarron Canyon is cold but rewarding. The wild brown trout population in this NE New Mexico canyon is underappreciated. Bundle up and fish the deep pools and runs.
Water Notes
Water 36–44°F. Winter mountain conditions. US-64 through canyon maintained. State park year-round.
Hatch Calendar
| Insect | Peak | Active | Size | Productive Patterns |
|---|---|---|---|---|
| Pale Morning Dun Ephemerella inermis |
May, Jun | Apr, May, Jun, Jul | #16–18 |
|
| Caddis / Golden Stonefly Hydropsyche / Calineuria spp. |
Jun | May, Jun, Jul, Aug | #8–16 |
|
| Blue Winged Olive (Fall) Baetis tricaudatus |
Oct | Sep, Oct, Nov | #18–20 |
|
Access & Approach
Cimarron Canyon State Park (NM State Parks day-use fee) provides the primary access along US-64. Wading only — the river is too small to float. New Mexico fishing license required. Special trout regulations apply in parts of the park.
Regulations & License
Fishing in New Mexico requires a current license. Always verify season dates, bag limits, and any special-regulation waters before you fish.
New Mexico fishing regulations & license →
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About Current
Cimarron River conditions on Current combine real-time flow data (USGS, WSC, CDEC, CEHQ), weather, tide predictions, hatch probabilities calibrated to this specific water, and recent fly shop reports from the area.
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