Rules at a glance
- Public water
- Licence required
Water temperature for Brown Trout
Ideal15°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.
Why this works
Good — water temperature is working for you, but river flow is the limiting factor today.
Likely species
Gammarids
Hatch timeline · todayPeak at 11 Uhr
Hatch predictions
Today's headline hatch shown — see all 11 active hatches hour by hour as a supporter.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 2 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Evidence
Survey-backed · regionalHigh confidence
Backed by regional invertebrate surveys; no sampling on this exact reach yet.
Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
March BrownHatch
2
3
2
Late March BrownHatch
2
3
2
Large Brook DunHatch
2
3
2
Large StoneflyHatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Brown Trout
Top
22-24 · Pattern
Upstream dry, on top
Beats · 1
Cornellana · 1.7 kmC&R trout
C&R trout stretch — Curva del Corro del Charco to Río Narcea.
Beat detail
Daily permit required, all fish returned
Upstream: Curva del Corro del Charco
Downstream: Río Narcea
Permits & access
Free state water
State rod licence required for trout / salmon as applicable.
- Asturian fishing licence required
- Proximity to Narcea salmon cotos — check beat boundaries.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
Río Nonaya, Salas, Asturias Terrain map
The full read · show the working · for Brown Trout · confidence 75%
How the 73 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow40 × 22%8.8
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity45 × 12%5.4
Conditions total= 73
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Related guides
Booking & contacts
Río Nonaya
Water temperature for Brown Trout
Ideal15°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.
Why this works
Good — water temperature is working for you, but river flow is the limiting factor today.
Likely species
Hatch timeline · todayPeak at 11 Uhr
Hatch predictions
Today's headline hatch shown — see all 11 active hatches hour by hour as a supporter.
Start free trial14-day free trial. Cancel anytime.
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 2 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Evidence
Survey-backed · regionalHigh confidence
Backed by regional invertebrate surveys; no sampling on this exact reach yet.
Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
March BrownHatch
2
3
2
Late March BrownHatch
2
3
2
Large Brook DunHatch
2
3
2
Large StoneflyHatch
2
3
2
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Brown Trout
Top
22-24 · Pattern
Upstream dry, on top
Beats · 1
Cornellana · 1.7 kmC&R trout
C&R trout stretch — Curva del Corro del Charco to Río Narcea.
Beat detail
Daily permit required, all fish returned
Upstream: Curva del Corro del Charco
Downstream: Río Narcea
Permits & access
Free state water
State rod licence required for trout / salmon as applicable.
- Asturian fishing licence required
- Proximity to Narcea salmon cotos — check beat boundaries.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
Río Nonaya, Salas, Asturias Terrain map
The full read · show the working · for Brown Trout · confidence 75%
How the 73 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow40 × 22%8.8
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity45 × 12%5.4
Conditions total= 73
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Related guides
Booking & contacts