Freestone · Karst · Una-Sana Canton / Ključ–Sanski Most

Sana

Sana venue image
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Major Una tributary flowing through karst landscape between Ključ and Sanski Most.

Good · Brown Trout
CDC Emerger · 16-20
Goodlive now
A proper day on the water
Low and clear — careful approach country. Stay small, stay accurate.
75% confidence
What moved it
  • LevelLight rain recentlyNo gauge reading
  • Water temp16.9°C
  • ClarityClear
Today’s fly
CDC Emerger
CDC Emerger16-20
Proven pattern for this period
Conditions on the water
Estimate
Level
Light rain recently
No gauge reading
Water temp16.9°C
ClarityClear
Weather22°C
WindW 3 km/h
Pressure1016 hPa
Rain · recent7.9 mm
Rain · ahead21.8 mm

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

Water temperature for brown trout
Warm — slow
17°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 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 9 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.
  • Ribolovačka dozvola (fishing permit)
  • Permits from local fishing associations
  • Enquire locally.
What's coming
Plan ahead
5-day outlook
Other water nearby · 4
Ribnik
24 km
Brown trout · Grayling
Sana (Bosanska Sana)
26 km
Brown trout · Grayling · Hucho
Unac
35 km
Brown trout · Grayling
Una
60 km
17
Brown trout · Grayling · Hucho
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

Major Una tributary flowing through karst landscape between Ključ and Sanski Most. Brown trout and grayling in clear limestone water. Larger than many Bosnian tributaries, offering varied fly water with pools, runs, and riffles. Part of the western Bosnian karst river network that produces some of the best grayling water in the Balkans.

  • Karst
The full read · show the working · for brown trout · confidence 75%
How the 75 is built — score × weight = contribution
Temperature79 × 28%22.1
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity64 × 12%7.7
Conditions total= 75
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
Euro Nymphingsubsurface methods
Booking & contacts