Baltic-draining Pomeranian river with grayling and sea trout, moderate flow through wooded lowlands. Included by the Grayling Society among northern Polish grayling rivers—a practical designation worth respecting.
- Mixed
Water temperature for pike
Ideal17°C est.ideal 8–18°C
0°14°28°
How to fish it · for pike
When
trout: 1 April – 30 September; grayling: 1 June – 28 February, with the main fly season running from late spring through early autumn on the Wieprza
Where
Baltic-draining Pomeranian river with grayling and sea trout, moderate flow through wooded lowlands.
Why this works
Excellent — 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 12 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
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
1
Grayling seasonSeason
2
1
1
2
2
2
2
2
2
Terrestrial BeetlesHatch
2
3
3
2
Blue Winged OliveHatch
1
2
2
2
2
1
Black MidgeHatch
1
2
2
2
2
2
2
2
2
2
2
1
Summer River MidgeHatch
1
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Pike fly box
8–10 · Streamer
Strip it for fish chasing fry or in coloured water.
Permits & access
Permit required — see local rules.
- Polish fishing card plus local permit required
- As a Baltic-draining river, local migratory-fish rules and beat access matter more than generic inland assumptions.
What's coming
Plan ahead
5-day outlook
Other water nearby · 1
Gallery · 1
Terrain map
About this water
Water quality (WFD)
- Ecology: Moderate
- Chemical: Unknown
What this classification means
WFD ecological status Good → Moderate corrected to EEA WISE 2022 (3rd RBMP) classification for waterbody PLRW60001646895 (was a stale earlier-cycle value). Source: EEA WISE SWB_SurfaceWaterBody (discodata.eea.europa.eu), verified 2026-06-18.
WFD classification · PLRW60001646895
The full read · show the working · for pike · confidence 75%
How the 81 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow90 × 22%19.8
Clarity85 × 18%15.3
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity61 × 12%7.3
Conditions total= 81
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
Seasons & zones
- Trout1 April → 30 September
- Grayling1 June → 28 February
Related guides
Booking & contacts
Wieprza
Google Places
Baltic-draining Pomeranian river with grayling and sea trout, moderate flow through wooded lowlands.
Water temperature for pike
Ideal17°C est.ideal 8–18°C
0°14°28°
How to fish it · for pike
When
trout: 1 April – 30 September; grayling: 1 June – 28 February, with the main fly season running from late spring through early autumn on the Wieprza
Where
Baltic-draining Pomeranian river with grayling and sea trout, moderate flow through wooded lowlands.
Why this works
Excellent — 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 12 active hatches hour by hour with Pro.
Start free trial14-day free trial. Cancel anytime.
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
1
Grayling seasonSeason
2
1
1
2
2
2
2
2
2
Terrestrial BeetlesHatch
2
3
3
2
Blue Winged OliveHatch
1
2
2
2
2
1
Black MidgeHatch
1
2
2
2
2
2
2
2
2
2
2
1
Summer River MidgeHatch
1
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Pike fly box
8–10 · Streamer
Strip it for fish chasing fry or in coloured water.
Permits & access
Permit required — see local rules.
- Polish fishing card plus local permit required
- As a Baltic-draining river, local migratory-fish rules and beat access matter more than generic inland assumptions.
What's coming
Plan ahead
5-day outlook
Other water nearby · 1
Gallery · 1
Terrain map
About this water
Baltic-draining Pomeranian river with grayling and sea trout, moderate flow through wooded lowlands. Included by the Grayling Society among northern Polish grayling rivers—a practical designation worth respecting.
- Mixed
Water quality (WFD)
- Ecology: Moderate
- Chemical: Unknown
What this classification means
WFD ecological status Good → Moderate corrected to EEA WISE 2022 (3rd RBMP) classification for waterbody PLRW60001646895 (was a stale earlier-cycle value). Source: EEA WISE SWB_SurfaceWaterBody (discodata.eea.europa.eu), verified 2026-06-18.
WFD classification · PLRW60001646895
The full read · show the working · for pike · confidence 75%
How the 81 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow90 × 22%19.8
Clarity85 × 18%15.3
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity61 × 12%7.3
Conditions total= 81
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
Seasons & zones
- Trout1 April → 30 September
- Grayling1 June → 28 February
Related guides
Booking & contacts