Freestone · Limestone · Primorska / Breginj, SI

Bela (Breginj)

Bela (Breginj) — Hudourniška pregrada na Beli

A Nadiža tributary at Breginj, worth qualifying carefully — there's at least one other Bela elsewhere in Slovenia, and this is the one that runs into the border river near the Italian frontier, not the other one.

Prime · Marble Trout
Light Sculpin · 4–8
Primelive now
About as good as it gets
River steady at a fishable height. On the feed top to bottom — start on the rises with a dry, drop a nymph if they stay down.
75% confidence
What moved it
  • LevelProxyvia Nadiža
  • Water temp8.3°C
  • ClarityClear
Today's fly
Light Sculpin
Light Sculpin4–8
Swing, sub-surface
Conditions on the water
Proxy gauge
Level
Steady
Proxy
via Nadiža
Water temp8.3°C
ClarityClear
Weather3°C
WindN 8 km/h
Pressure1026 hPa
Rain · recent0.0 mm
Rain · ahead0.1 mm

No gauge on this water — conditions are inferred from Nadiža. The trend transfers, the absolute level does not.

Water temperature for Marble Trout
Ideal
8°C est.ideal 8–13°C
0°14°28°
How to fish it · for Marble 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
Excellent — water temperature is right today, though insect activity could be better.
Likely species
Mayflies
Stoneflies
Caddisflies
Gammarids
Molluscs
  • Pond snailsMost likelyLower confidence
    #10–12–14 · Adult
    Dead-drift or twitch a snail pattern near weed beds.
Oligochaetes
  • Aquatic wormsMost likelyLower confidence
    #12–14–16 · Adult
    Dead-drift a worm pattern deep - a year-round staple.
Hatch timeline · todayPeak at 10am

Hatch predictions

Today's headline hatch shown — see all 8 active hatches hour by hour as a supporter.

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Sub-surface · on the nymphunder the surface

Hatch predictions

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

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Supporters see what else is on the menu.

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Evidence
Records-basedModerate confidence

Based on species-occurrence records, not local invertebrate surveys.

Through the year
0–3 scale · October 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
Marble 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.

Permits & access
Permit required — see local rules.
  • RD Tolmin
  • Fly-only, barbless
  • Upper 1km closed (breeding water).
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Nadiža
4.0 km
76
Marble trout · Marble brown hybrid trout · Grayling
Učja
6.0 km
81
Marble trout · Brown trout · Rainbow trout
Natisone
12 km
0
Brown trout · Marble trout · Grayling
Soča
15 km
79
Brown trout · Marble trout
Upper Soča (Trenta)
21 km
0
Marble trout · Grayling · Rainbow trout
Gallery · 2
  1. Bela (Breginj) — Hudourniška pregrada na Beli
    Hudourniška pregrada na Beli
  2. Terrain map of the venue
    Terrain map
About this water

The upper kilometre is breeding water and closed outright; below that it's a small, cold, marble-and-brown-trout stream that fishes best when the Nadiža itself is running low and warm and you want somewhere with a bit more shade and a bit less pressure.

  • River
  • Limestone
The full read · show the working · for Marble Trout · confidence 75%
How the 80 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow60 × 22%13.2
Clarity95 × 18%17.1
Feeding Time80 × 13%10.4
Pressure80 × 7%5.6
Insect activity49 × 12%5.9
Conditions total= 80
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Nadižaproxy
Prey activitymodelled from regional profilemodelled
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 March → 30 September
  • Marble trout 1 April → 31 October
Related guides
Alpine Streamsmountain entomologyMarble TroutSoča systemEuro Nymphingsubsurface methods
Booking & contacts
At a glance

Bela (Breginj) is a freestone river in Primorska / Breginj, Slovenia. Its recorded elevation is about 648 m above sea level and the catchment geology is limestone. The river is described as roughly 9 km long. Our data lists marble trout and brown trout here. The trout season is recorded as running from 1 March to 30 September. The marble trout season is recorded as running from 1 April to 31 October. Best window recorded for anglers: May–September. Core methods listed: Dry fly; Upstream nymph. Nearby waters in our listings include Nadiža at 4.0 km, Učja at 6.0 km and Natisone at 12 km.