Freestone · Karst · Una-Sana Canton / Martin Brod

Unac

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Pristine Una tributary flowing through narrow karst canyon near Martin Brod — one of Bosnia's most unspoilt fly fishing rivers.

Good · Brown Trout
CDC Emerger · 16-20
Goodlive now
A proper day on the water
River dropping into shape after a lift. Fishing well — get there before it drops out.
75% confidence
What moved it
  • LevelModerate rain recentlyNo gauge reading
  • Water temp15.9°C
  • ClaritySlightly coloured
Today’s fly
CDC Emerger
CDC Emerger16-20
Proven pattern for this period
Conditions on the water
Estimate
Level
Moderate rain recently
No gauge reading
Water temp15.9°C
ClaritySlightly coloured
Weather19°C
WindSW 2 km/h
Pressure1015 hPa
Rain · recent24.7 mm
Rain · ahead1.9 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

Water temperature for brown trout
Ideal
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 temperature 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 4 active hatches hour by hour with Pro.

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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
Grayling seasonSeason
1
2
2
2
2
2
2
1
March BrownHatch
2
3
2
Large StoneflyHatch
2
3
2
Olive UprightHatch
2
3
3
2
Alpine RhithrogenaHatch
2
3
3
2

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.
  • Bosnian fishing licence + local permit.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Una
35 km
17
Brown trout · Grayling · Hucho
Sana
35 km
75
Brown trout
Zrmanja
47 km
Softmouth trout · Brown trout
Sana (Bosanska Sana)
53 km
Brown trout · Grayling · Hucho
Ribnik
58 km
Brown trout · Grayling
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

Pristine Una tributary flowing through narrow karst canyon near Martin Brod — one of Bosnia's most unspoilt fly fishing rivers. Crystal-clear water with wild brown trout and grayling. The canyon sections offer adventurous fishing in remote surroundings. Part of the Una National Park system.

  • Karst
The full read · show the working · for brown trout · confidence 75%
How the 76 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow71 × 22%15.6
Clarity85 × 18%15.3
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity55 × 12%6.6
Conditions total= 76
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout1 March → 30 September
  • Grayling1 April → 30 November
Related guides
Grayling Playbookgrayling tacticsEuro Nymphingsubsurface methods
Booking & contacts