Lower Río Limay regulated reach below Arroyito towards the Río Neuquén confluence. Created in Pass 3 because rules, flow drivers and angling character differ from the upper Nahuel Huapi/Traful reach.
- Volcanic
Rules at a glance
- Free fishing
- Fly only
Water temperature for Brown Trout
Ideal10°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brown Trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Hatch timeline · todayPeak at 10am
12pm(now) — Black Midge
Stage: On emergersApproach: Emerger or dryActivity: 43%
Peak emergence window
Peak activity at 10am — Black Midge (Black Midge, Peak emergence window)
Evidence
Records-basedModerate confidence
Based on species-occurrence records, not local invertebrate surveys.
Through the year
0–3 scale · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
2
2
2
2
2
1
1
2
Andesiops (Patagonian Olive)Hatch
3
3
3
2
2
3
3
Patagonian Mayfly (Large)Hatch
3
3
2
2
3
Smicridea (Patagonian Caddis)Hatch
3
3
3
2
2
3
Patagonian Stonefly (Large)Hatch
2
2
3
3
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Brown Trout fly box
Permits & access
Permit required — see local rules.
- Argentine Patagonian continental permit (or Chilean Sernapesca licence) required
- Rules vary by province, National Park and reach — confirm annexes before fishing.
What's coming
Plan ahead
5-day outlook
Gallery · 2
Río Limay Neuquen Terrain map
About this water
The full read · show the working · for Brown Trout · confidence 75%
How the 0 is built — score × weight = contribution
Temperature77 × 28%21.6
Flow60 × 22%13.2
Clarity95 × 18%17.1
Feeding Time65 × 13%8.5
Pressure80 × 7%5.6
Insect activity30 × 12%3.6
Conditions total= 70
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Trout 1 November → 30 June
Related guides
Booking & contacts
Río Limay — Lower / Arroyito to Neuquén confluence
Lower Río Limay regulated reach below Arroyito towards the Río Neuquén confluence.
Water temperature for Brown Trout
Ideal10°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brown Trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Hatch timeline · todayPeak at 10am
12pm(now) — Black Midge
Stage: On emergersApproach: Emerger or dryActivity: 43%
Peak emergence window
Peak activity at 10am — Black Midge (Black Midge, Peak emergence window)
Evidence
Records-basedModerate confidence
Based on species-occurrence records, not local invertebrate surveys.
Through the year
0–3 scale · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
2
2
2
2
2
1
1
2
Andesiops (Patagonian Olive)Hatch
3
3
3
2
2
3
3
Patagonian Mayfly (Large)Hatch
3
3
2
2
3
Smicridea (Patagonian Caddis)Hatch
3
3
3
2
2
3
Patagonian Stonefly (Large)Hatch
2
2
3
3
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Brown Trout fly box
Permits & access
Permit required — see local rules.
- Argentine Patagonian continental permit (or Chilean Sernapesca licence) required
- Rules vary by province, National Park and reach — confirm annexes before fishing.
What's coming
Plan ahead
5-day outlook
Gallery · 2
Río Limay Neuquen Terrain map
About this water
Lower Río Limay regulated reach below Arroyito towards the Río Neuquén confluence. Created in Pass 3 because rules, flow drivers and angling character differ from the upper Nahuel Huapi/Traful reach.
- Volcanic
The full read · show the working · for Brown Trout · confidence 75%
How the 0 is built — score × weight = contribution
Temperature77 × 28%21.6
Flow60 × 22%13.2
Clarity95 × 18%17.1
Feeding Time65 × 13%8.5
Pressure80 × 7%5.6
Insect activity30 × 12%3.6
Conditions total= 70
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Trout 1 November → 30 June
Related guides
Booking & contacts