Reservoir · Mixed · Central Bohemia

Slapy Reservoir

Slapy Reservoir venue image
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Large Vltava reservoir south of Prague and a well-known recreational and mixed-species fishery.

Good · Trout
Pheasant tail nymph · 14–16
Goodlive now
Good summer conditions for Slapy Reservoir
Good wave on — drift country. Drift fishing weather — three flies on a long leader.
65% confidence
What moved it
  • WindNW 8 km/hLight breeze
Today’s fly
Pheasant tail nymph
Pheasant tail nymph14–16
Search the runs and pockets, dead-drift near the bottom.
Conditions on the water
Live gauge
Wind
Light breeze
NW 8 km/h
N
NW
from the north-west
WaveRipple
Water temp
Air temp19°C
CloudClear
Pressure
Rain · recent0.0 mm

Some readings unavailable — check directly before fishing.

How to fish it · for trout
When
Current conditions suit Slapy Reservoir well for summer tactics. The ripple should help fish move and feed more confidently. Early morning is often the most productive window in summer — make the most of it.
Where
Start with Pheasant tail nymph (12-14) on a As per local method. If that does not produce, switch depth or speed before changing the pattern entirely.
The plan
Plan A

Start with Pheasant tail nymph (12-14) on a As per local method. If that does not produce, switch depth or speed before changing the pattern entirely.

Plan B

Fish early and late, try deeper during the heat of the day with a fast-sinking line.

Watch for

Evening tends to be the best period in summer — stay late if you can for a sedge or spinner fall.

Boat — drift

A gentle ripple is ideal for drifting — broadside drift covering the wind lanes should be productive.

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
Black MidgeHatch
2
3
3
3
3
3
3
3
3
3
3
2
Reservoir BuzzerHatch
2
3
3
3
3
3
2
Lake OliveHatch
2
3
3
3
3
3
2
Silverhorns & LonghornsHatch
1
2
2
2
1

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

Ranked for today
Trout fly box
BS
Brown streamer
8–10 · Streamer
Strip it for fish chasing fry or in coloured water.
PS
Pike streamer
8–10 · Streamer
Strip it for fish chasing fry or in coloured water.
Permits & access
Permit required — see local rules.
  • State licence plus local reservoir permit required
  • Trout presence is variable, so confirm current stocking and target species with the local authority before planning a dedicated salmonid trip.
What's coming
Plan ahead
5-day outlook
Condition match
91%
Cloud70%
Wind100%
Temp100%

Conditions are ideal for Slapy Reservoir — wind, cloud and temperature all line up.

Other water nearby · 3
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

Large Vltava reservoir south of Prague and a well-known recreational and mixed-species fishery. Fly fishing and boat fishing are permitted and the official fishery card allows retention of rainbow trout and brook char, but the evidence does not support presenting Slapy as a serious Czech trout destination; its identity is primarily that of a broad non-salmonid reservoir.

  • Lake
  • Mixed
Why this score
  • Wind conditions (ripple) closely match what this water fishes best in.
  • Temperature (moderate) is in the sweet spot for summer fishing.
Directions
Seasons & zones
  • Trout16 April → 31 August
  • Grayling16 June → 30 November
Related guides
Booking & contacts