Caddisflies
Pyrenean Navarran river flowing through the Salazar valley before joining the Aragón system. Classic clear-water trout basin with a fast mountain response and a strong post-snowmelt early-summer window.
- Mixed
Rules at a glance
- Public water
- Licence required
Water temperature for Brown Trout
Warm — slow18°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
Water at 18.6°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
Likely species
Hatch timeline · tomorrowPeak at 12pm
12pm(now) — Heather Fly
Stage: Terrestrials on topApproach: Dry flyActivity: 70%
Also:Reed Smut37%
Peak emergence windowWeather boost7 food groups active
Peak activity at 12pm — Heather Fly (Heather Fly, Peak emergence window)
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 2 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 · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
1
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
Brown Trout fly box
Permits & access
Permit required — see local rules.
- Gobierno de Navarra fishing licence required
- Many stretches are sin muerte (no-kill), but the exact tramo and permit structure should be checked in the current official Navarra calendar and coto system.
What's coming
Plan ahead
5-day outlook
Water here around 19°C. Nothing cooler within range — carry a thermometer.
Gallery · 2
Terrain map
About this water
The full read · show the working · for Brown Trout · confidence 80%
How the 0 is built — score × weight = contribution
Temperature31 × 28%8.7
Flow60 × 22%13.2
Clarity75 × 18%13.5
Feeding Time80 × 13%10.4
Pressure80 × 7%5.6
Insect activity50 × 12%6.0
Conditions total= 57
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
Directions
Seasons & zones
- Trout 1 May → 30 June
CAUTION: Eska–Salazar basin appears on Navarra's standing list of seven RSS basins but is NOT listed in the 2026 permit allocation breakdown. Do not assume open ordinary RSS access without checking tramo-specific rules first. If accessible, all catch-and-release.
Related guides
Booking & contacts
Río Salazar
Pyrenean Navarran river flowing through the Salazar valley before joining the Aragón system.
Water temperature for Brown Trout
Warm — slow18°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
Water at 18.6°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
Likely species
Hatch timeline · tomorrowPeak at 12pm
12pm(now) — Heather Fly
Stage: Terrestrials on topApproach: Dry flyActivity: 70%
Also:Reed Smut37%
Peak emergence windowWeather boost7 food groups active
Peak activity at 12pm — Heather Fly (Heather Fly, Peak emergence window)
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 2 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 · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
1
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
Brown Trout fly box
Permits & access
Permit required — see local rules.
- Gobierno de Navarra fishing licence required
- Many stretches are sin muerte (no-kill), but the exact tramo and permit structure should be checked in the current official Navarra calendar and coto system.
What's coming
Plan ahead
5-day outlook
Water here around 19°C. Nothing cooler within range — carry a thermometer.
Gallery · 2
Terrain map
About this water
Pyrenean Navarran river flowing through the Salazar valley before joining the Aragón system. Classic clear-water trout basin with a fast mountain response and a strong post-snowmelt early-summer window.
- Mixed
The full read · show the working · for Brown Trout · confidence 80%
How the 0 is built — score × weight = contribution
Temperature31 × 28%8.7
Flow60 × 22%13.2
Clarity75 × 18%13.5
Feeding Time80 × 13%10.4
Pressure80 × 7%5.6
Insect activity50 × 12%6.0
Conditions total= 57
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
Directions
Seasons & zones
- Trout 1 May → 30 June
CAUTION: Eska–Salazar basin appears on Navarra's standing list of seven RSS basins but is NOT listed in the 2026 permit allocation breakdown. Do not assume open ordinary RSS access without checking tramo-specific rules first. If accessible, all catch-and-release.
Related guides
Booking & contacts