Limestone · Serbia / Western Serbia (Valjevo), RS

Gradac

Sunlit stretch of the Gradac river running over mossy boulders through bare winter trees near Valjevo, Serbia

One of Serbia's most valued dedicated catch-and-release fly fishing rivers — a clear limestone spring creek near Valjevo with strict barbless hook rules.

Prime · Grayling
Pink Grayling Bug · Hook 16
Primelive now
About as good as it gets
Low and clear — careful approach country. Take your time — read the water before you cast.
90% confidence
What moved it
  • LevelProxyvia Gacka
  • Water temp11.9°C
  • ClarityClear
Today's fly
Pink Grayling Bug
Pink Grayling BugHook 16
in season · matches water height · all-rounder
Conditions on the water
Proxy gauge
Level
Steady
Proxy
via Gacka
Water temp11.9°C
ClarityClear
Weather15°C
WindE 9 km/h
Pressure1027 hPa
Rain · recent0.0 mm
Rain · ahead0.0 mm

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

Water temperature for Grayling
Ideal
12°C est.ideal 4–14°C
0°14°28°
How to fish it · for Grayling
When
Midday window — grayling feed best from late morning into early afternoon.
Where
Work runs and glides — grayling shoal in the bottom third of the water column.
Method
Tight-line nymph the bottom third with weighted patterns.
Kit
10 ft #3 rod, floating line, long leader to 4 lb fluoro for nymphs.
Why this works
Excellent — conditions well-balanced, with water temperature particularly in your favour.
Likely species
Mayflies
Caddisflies
Damselflies & dragonflies
Gammarids
Hatch timeline · todayPeak at 2pm

Hatch predictions

Today's headline hatch shown — see all 12 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

Top prey shown — see all 5 as a supporter.

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Evidence
Records-basedModerate confidence

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

Through the year
0–3 scale · September 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
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
2
2
2
2
1
Blue Winged OliveHatch
1
2
2
2
2
1

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Grayling fly box

Karst salmonid rivers with a strong dry-fly identity, but nymphs and larger seasonal patterns still matter, especially in spring.

Small Perdigón
Small Perdigón
Hook 14–18 · Fly
in season · matches water height
Permits & access
Permit required — see local rules.
  • Fishing licence plus the relevant local association permit
  • The Gradac is a dedicated catch-and-release fly water with strict barbless rules; check the current local beat rules before travel.
What's coming
Plan ahead
5-day outlook
Other water nearby · 3
Drina
38 km
79
Brown trout · Grayling · Hucho
Trešnjica Gorge
40 km
Brown trout · Rainbow trout
Crni Rzav & Zlatibor streams
56 km
Brown trout · Rainbow trout
Gallery · 2
  1. Sunlit stretch of the Gradac river running over mossy boulders through bare winter trees near Valjevo, Serbia
    The Gradac river near Valjevo
  2. Terrain map of the venue
    Terrain map
About this water

One of Serbia's most valued dedicated catch-and-release fly fishing rivers — a clear limestone spring creek near Valjevo with strict barbless hook rules. Brown trout and grayling in gin-clear karst water flowing through a forested gorge. The Gradac is Serbia's closest equivalent to a Western European chalk stream: technical, selective fish in crystal water demanding fine tippets and precise presentation. Mandatory C&R, barbless only, fly-only beats.

  • Limestone
The full read · show the working · for Grayling · confidence 90%
How the 85 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time80 × 13%10.4
Pressure80 × 7%5.6
Insect activity71 × 12%8.5
Conditions total= 85
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via Gackaproxy
Prey activitymodelled from regional profilemodelled
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 March → 30 September
  • Grayling 1 April → 30 November
Related guides
Grayling Playbookgrayling tacticsEuro Nymphingsubsurface methods
Booking & contacts