Mayflies
Stoneflies
Gammarids
The upper reaches above the cave system hold brown trout in water that's fishable on its own merits, geological theatrics aside, though it's fair to say the caves are the reason most people learn this river's name in the first place.
- River
- Limestone
Rules at a glance
- Permit 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 · tomorrowQuiet day
12pm(now) — Autumn Needle Fly
Stage: Creeping nymphsApproach: Heavy nymphActivity: 17%
Low insect activity predicted today
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 4 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Evidence
Records-basedModerate confidence
Based on species-occurrence records, not local invertebrate surveys.
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
2
1
Evening SedgeHatch
2
3
3
3
2
Alpine RhithrogenaHatch
1
2
2
1
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
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
Ultra-clear spring-fed rivers with large educated trout. Sight fishing, technical presentation, fine tippets. Euro-nymphing dominant subsurface method. Exceptional dry-fly windows during hatch periods. Gacka is the flagship water.
Top
6–10 · Pattern
High-confidence seasonal pick
Permits & access
Permit required — see local rules.
- Fishing licence + permit.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
Reka river at Škoflje (Slovenia) Terrain map
About this water
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
WFD classification · SI52VT19
The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature67 × 28%18.8
Flow71 × 22%15.6
Clarity75 × 18%13.5
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity58 × 12%7.0
Conditions total= 68
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
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 1 March → 30 September
Related guides
Booking & contacts
River Reka
The Reka does the same underground disappearing act as the Unica, if rather more famously — it flows into Škocjan Caves and vanishes, which is one of the more dramatic ways a river can end a day's fishing.
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 · tomorrowQuiet day
12pm(now) — Autumn Needle Fly
Stage: Creeping nymphsApproach: Heavy nymphActivity: 17%
Low insect activity predicted today
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 4 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Evidence
Records-basedModerate confidence
Based on species-occurrence records, not local invertebrate surveys.
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
2
1
Evening SedgeHatch
2
3
3
3
2
Alpine RhithrogenaHatch
1
2
2
1
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
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
Ultra-clear spring-fed rivers with large educated trout. Sight fishing, technical presentation, fine tippets. Euro-nymphing dominant subsurface method. Exceptional dry-fly windows during hatch periods. Gacka is the flagship water.
Top
6–10 · Pattern
High-confidence seasonal pick
Permits & access
Permit required — see local rules.
- Fishing licence + permit.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
Reka river at Škoflje (Slovenia) Terrain map
About this water
The upper reaches above the cave system hold brown trout in water that's fishable on its own merits, geological theatrics aside, though it's fair to say the caves are the reason most people learn this river's name in the first place.
- River
- Limestone
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
WFD classification · SI52VT19
The full read · show the working · for Brown Trout · confidence 90%
How the 0 is built — score × weight = contribution
Temperature67 × 28%18.8
Flow71 × 22%15.6
Clarity75 × 18%13.5
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity58 × 12%7.0
Conditions total= 68
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
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 1 March → 30 September
Related guides
Booking & contacts
At a glance
River Reka is a freestone river in Inner Carniola / Karst, Slovenia. The catchment geology is recorded as limestone, and the water sits at about 542 m above sea level. The river is described as roughly 51 km long. The species listed for this water is brown trout. The trout season is recorded as running from 1 March to 30 September. Best window recorded for anglers: May–August. Core methods listed: Upstream nymph; Dry fly. Level and flow data for this water is linked from 1 gauge. Its Water Framework Directive ecological status is recorded as good. Nearby waters in our listings include Rižana at 20 km, Vipava at 22 km and Unica at 23 km.