Río Chimehuín is included in the Phase 1 Patagonia visitor pack for junin san martin. This record is engine-shaped but still requires reach-level access, gauge and regulation verification before precise condition scoring.
- Volcanic glacial
Closed season
Season reopens 1 November. Plenty of other water available now.
Closed — confidence not applicable today.
Live now
Conditions on the water
Trends shown where the gauge supports them
○Regional est.
Level
Dry recently
No gauge reading
Water temp
9.1°C
Estimated
Clarity
Clear
Air temp
6°C
Wind
E 4 km/h
Calm
Pressure
1020 hPa
Rain · 48h
0.0 mm
No meaningful rain
Rain · ahead
3.5 mm
Light rain · next 48h
No gauge on this water — readings are regional estimates from weather, not a live gauge.
How to fish · for brown trout
The brief
When · where · method · kit
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.
Hatches & runs
What's on, when
Twelve months at a glance
Through the year
0–3 scale · June highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
2
2
2
2
1
1
2
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Western Green DrakeHatch
2
2
Flav (Small Western Green Drake)Hatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Today's fly · curated pack
Top pattern + the box
6 patterns from this venue's curated pack
Detail · next 12h
Water temperature & rain
The two readings most likely to move the verdict
Water temperature for brown trout
Cool — slow9°C est.ideal 10–16°C
0°14°28°
The full read
Show the working
How the score is built · what we trust
How the 0 is built — score × weight = contribution
Temperature84 × 28%23.5
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity50 × 12%6.0
Conditions total= 79
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
About this water
Río Chimehuín, end to end
Field guide · contributor-editedRío Chimehuín · about
What this water is
Background · character · contributors
About this water
Río Chimehuín · directions
How to get to the water
Directions
Río Chimehuín · zones
Where the rules change
Seasons · zones · per-species rules
Seasons & zones
- Trout1 November → 31 MayC&R
Río Chimehuín · permits
Good to know
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.
Río Chimehuín · learn
Related guides
Learn-zone playbooks for this water
Related guides
Río Chimehuín
Río Chimehuín is included in the Phase 1 Patagonia visitor pack for junin san martin.
Species
Closed season
Season reopens 1 November. Plenty of other water available now.
Closed — confidence not applicable today.
Water temperature for brown trout
Cool — slow9°C est.ideal 10–16°C
0°14°28°
The full read · show the working · for brown trout · confidence 75%
How the 0 is built — score × weight = contribution
Temperature84 × 28%23.5
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time70 × 13%9.1
Pressure80 × 7%5.6
Insect activity50 × 12%6.0
Conditions total= 79
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
Conditions
○Regional est.Level
Dry recently
No gauge reading
Water temp
9.1°C
Estimated
Clarity
Clear
Air temp
6°C
Wind
E 4 km/h
Calm
Pressure
1020 hPa
Rain · 48h
0.0 mm
No meaningful rain
Rain · ahead
3.5 mm
Light rain · next 48h
No gauge on this water — readings are regional estimates from weather, not a live gauge.
Evidence
ModelledModerate confidence
Modelled from regional ecology — no survey or occurrence data for this water yet.
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.
Through the year
0–3 scale · June highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
2
2
2
2
1
1
2
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Western Green DrakeHatch
2
2
Flav (Small Western Green Drake)Hatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
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.
Directions
About this water
Río Chimehuín is included in the Phase 1 Patagonia visitor pack for junin san martin. This record is engine-shaped but still requires reach-level access, gauge and regulation verification before precise condition scoring.
- Volcanic glacial
Seasons & zones
- Trout1 November → 31 MayC&R
Fishing better nearby · 5
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