Freestone · Limestone · Catalonia, ES

Fluvià

The Fluvia river flowing past the historic town of Besalu, Catalonia

The Fluvià drains volcanic and limestone Garrotxa country.

Today · About as good as it gets
Reed Smut
Forecast · Today
About as good as it gets
On the feed top to bottom — start on the rises with a dry, drop a nymph if they stay down.
90% projected
Today's fly
Reed Smut
Reed Smut
Conditions on the water · Today
Live gauge
Flow
Steady
0.4 m³/s
Water temp16.3°C
ClarityClear
Weather19°C
WindN 15 km/h
Pressure1019 hPa
Rain · recent8.8 mm
Rain · ahead2.0 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Brown Trout
Warm — slow
16°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 clarity is right today, though time of day could be better.
Likely species
Caddisflies
Gammarids
Hatch timeline · todayPeak at 11am

12pm(now) — Reed Smut

Stage: On emergersApproach: Emerger or dryActivity: 87%
Also:Cinnamon Sedge51%Flying Ants44%Pale Watery41%
Peak emergence window10 food groups active

Peak activity at 11am — Reed Smut (Reed Smut, Peak emergence window)

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds as a supporter.

Start free trial

14-day free trial. Cancel anytime.

Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 3 as a supporter.

Start free trial

14-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
2
2
2
2
2
2
1
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
2
2
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1

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.
  • Catalan fishing licence required
  • Controlled trout waters may require a ZPC permit, and legal dates differ between low-mountain, high-mountain, with-kill, and no-kill sectors, so check the current Generalitat rules for the exact zone.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Tech
27 km
0
Brown trout · Grayling
Muga
32 km
0
Brown trout
Ter
41 km
Brown trout
Freser
45 km
Brown trout
Tordera
49 km
0
Brown trout
Gallery · 2
  1. The Fluvia river flowing past the historic town of Besalu, Catalonia
    The Fluvia river at Besalu
  2. Terrain map of the venue
    Terrain map
About this water

The Fluvià drains volcanic and limestone Garrotxa country. The Gurn tributary at Sant Privat holds the main trout water — clear, alkaline freestone with alpine character from karst geology. Two protected salmonid zones reward careful presentation in technical runs.

  • Limestone
Water quality (WFD)
  • Ecology: Moderate
  • Chemical: Unknown

WFD classification · ES100MSPF2100060

The full read · show the working · for Brown Trout · confidence 90%
How the 75 is built — score × weight = contribution
Temperature70 × 28%19.6
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity68 × 12%8.2
Conditions total= 75
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
Apple MapsGoogle Maps
Seasons & zones
  • Trout 21 March → 12 October
Related guides
Pyrenees PlaybookSpanish riversEuro Nymphingsubsurface methods
Booking & contacts