Small limestone tributary, marble trout conservation zone. The sort of intimate water where restraint and respect matter more than technique.
- River
- Limestone
Water temperature for brown trout
Warm — slow17.5°Cideal 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 working for you, but time of day is the limiting factor today.
Hatch timeline · todayQuiet day
Hatch predictions
Today's headline hatch shown — see all 10 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Evidence
ModelledModerate confidence
Modelled from regional ecology — no survey or occurrence data for this water yet.
Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Alpine RhithrogenaHatch
1
2
2
1
Large Dark OliveHatch
1
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.
- Fishing licence + permit.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 4
Sopota waterfall, Trebuščica valley 
Trebuščica in spate at Krtovščah 
Srna gorge stream, Trebuščica valley Terrain map
About this water
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
The full read · show the working · for brown trout · confidence 75%
How the 71 is built — score × weight = contribution
Temperature66 × 28%18.5
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity60 × 12%7.2
Conditions total= 71
Can you trust it?
Water temperaturelive gauge readinggauge
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Trout1 March → 30 September
- Marble trout1 April → 31 October
Related guides
Booking & contacts
River Trebuščica
Contributor photo
Sopota waterfall, Trebuščica valley
Milan Rejec - CC BY 3.0
Small limestone tributary, marble trout conservation zone.
Water temperature for brown trout
Warm — slow17.5°Cideal 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 working for you, but time of day is the limiting factor today.
Hatch timeline · todayQuiet day
Hatch predictions
Today's headline hatch shown — see all 10 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
Evidence
ModelledModerate confidence
Modelled from regional ecology — no survey or occurrence data for this water yet.
Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
1
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Alpine RhithrogenaHatch
1
2
2
1
Large Dark OliveHatch
1
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.
- Fishing licence + permit.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 4
Sopota waterfall, Trebuščica valley Trebuščica in spate at Krtovščah Srna gorge stream, Trebuščica valley Terrain map
About this water
Small limestone tributary, marble trout conservation zone. The sort of intimate water where restraint and respect matter more than technique.
- River
- Limestone
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
The full read · show the working · for brown trout · confidence 75%
How the 71 is built — score × weight = contribution
Temperature66 × 28%18.5
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity60 × 12%7.2
Conditions total= 71
Can you trust it?
Water temperaturelive gauge readinggauge
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Trout1 March → 30 September
- Marble trout1 April → 31 October
Related guides
Booking & contacts