Freestone · Mixed · South Bohemia

Blanice

Blanice venue image
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Natural small river with a rich abundance of smaller trout and grayling.

Marginal · Brown Trout
Czech Nymph · 10-14
Marginallive now
Slow going — pick your moments
River dropping into shape after a lift. A short window. Take your time.
80% confidence
What moved it
  • Level0.26 mDropping after lift
  • Water temp19.2°C
  • ClarityColouredColouring up
Today’s fly
Czech Nymph
Czech Nymph10-14
Euro-nymph
Conditions on the water
Live gauge
Level
Steady
0.26 m
lowspate
Water temp19.2°C
ClarityColoured
Weather20°C
WindNW 7 km/h
Pressure1017 hPa
Rain · recent40.7 mm
Rain · ahead10.9 mm

Live readings — water temperature is an estimate where the gauge does not record it.

Water temperature for brown trout
Warm — slow
19°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
⚠️ Water at 19.2°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots. Otherwise poor — barometric pressure is in the right range.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 2 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
1
Grayling seasonSeason
1
2
2
2
2
1
GrannomHatch
2
2
Evening SedgeHatch
2
3
3
3
2
Large Dark OliveHatch
1
2
2
1
Iron BlueHatch
1
2
2
1

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.
  • State licence + local permit
  • Brown trout protected Sep 1–Apr 15
  • Grayling protected Dec 1–Jun 15.
What's coming
Plan ahead
5-day outlook
Water here around 19°C. Nothing cooler within range — carry a thermometer.
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

Natural small river with a rich abundance of smaller trout and grayling. Particularly enjoyable for fine dry-fly fishing and nymphing. Less famous than the Otava or Vltava but a genuinely rewarding fishery for anglers who appreciate intimate water, clear runs, and wild fish that reward light tackle and careful approach.

  • Mixed
Water quality (WFD)
  • Ecology: Moderate
  • Chemical: Failing to achieve good

WFD classification · CZHVL_1400

The full read · show the working · for brown trout · confidence 80%
How the 33 is built — score × weight = contribution
Temperature36 × 28%10.1
Flow40 × 22%8.8
Clarity40 × 18%7.2
Feeding Time45 × 13%5.9
Pressure80 × 7%5.6
Insect activity25 × 12%3.0
Conditions total= 41
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
Cooler water — back toward the 10–16 °C ideal band — would lift the score and ease welfare.
The dawn and dusk windows score higher than the midday lull.
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout16 April → 31 August
  • Grayling16 June → 30 November
Related guides
Grayling Playbookgrayling tacticsEuro Nymphingsubsurface methods
Booking & contacts