Stoneflies
Gammarids
Granite geology throughout creates typical freestone character. The southernmost Catalan salmonid zone, with marginal trout habitat reflecting lower elevation and Mediterranean influence.
- Granite
Rules at a glance
- Public water
- Licence required
Water temperature for Brown Trout
Cool — slow7°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.
Likely species
Hatch timeline · todayQuiet day
Hatch predictions
Today's headline hatch shown — see all 5 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 3 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Supporters see what else is on the menu.
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 · November highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
1
Large Dark OliveHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Autumn OliveHatch
1
2
1
Brown SedgeHatch
1
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
Gallery · 2
Montseny - Rio Tordera Terrain map
About this water
Water quality (WFD)
- Ecology: Moderate
- Chemical: Unknown
WFD classification · ES100MSPF1400060
The full read · show the working · for Brown Trout · confidence 75%
How the 0 is built — score × weight = contribution
Temperature48 × 28%13.4
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity23 × 12%2.8
Conditions total= 62
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Warmer water — toward the 10–16 °C ideal band — would lift the temperature score.
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Trout 21 March → 30 August
Related guides
Booking & contacts
Tordera
The Tordera drains the Montseny massif and flows to the coast.
Water temperature for Brown Trout
Cool — slow7°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.
Likely species
Hatch timeline · todayQuiet day
Hatch predictions
Today's headline hatch shown — see all 5 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 3 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Supporters see what else is on the menu.
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 · November highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
1
Large Dark OliveHatch
1
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1
Autumn OliveHatch
1
2
1
Brown SedgeHatch
1
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
Gallery · 2
Montseny - Rio Tordera Terrain map
About this water
Granite geology throughout creates typical freestone character. The southernmost Catalan salmonid zone, with marginal trout habitat reflecting lower elevation and Mediterranean influence.
- Granite
Water quality (WFD)
- Ecology: Moderate
- Chemical: Unknown
WFD classification · ES100MSPF1400060
The full read · show the working · for Brown Trout · confidence 75%
How the 0 is built — score × weight = contribution
Temperature48 × 28%13.4
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity23 × 12%2.8
Conditions total= 62
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Warmer water — toward the 10–16 °C ideal band — would lift the temperature score.
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Trout 21 March → 30 August
Related guides
Booking & contacts
At a glance
Tordera is a freestone river in Catalonia, Spain. The catchment geology is recorded as granite, and the water sits at about 383 m above sea level. The river is described as roughly 60 km long. The species listed for this water is brown trout. The trout season is recorded as running from 21 March to 30 August. Core methods listed: dry fly; small nymph; czech nymphing. Level and flow data for this water is linked from the gauge “Montseny (upper, CALC001554) + Sant Celoni (mid trout fishery, CALC001210) + Fogars de la Selva (lower, CALC001209)”. Its Water Framework Directive ecological status is recorded as moderate. Nearby waters in our listings include Fluvià at 44 km, Ter at 54 km and Llobregat at 68 km.