Lowland forest river in northwestern Poland with grayling and brown trout in the upper reaches. Lake-fed sections provide stable flow. Included by the Grayling Society among northern Polish grayling waters—a signal of quality.
- Mixed
Water temperature for brown trout
Warm — slow20°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 19.6°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots. Otherwise poor — water clarity is in the right range.
Hatch timeline · todayQuiet day
Hatch predictions
Today's headline hatch shown — see all 8 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
Brown Trout fly box
Permits & access
Permit required — see local rules.
- Polish fishing card plus local permit required
- Stable lake-fed sections and local management rules matter more here than mountain-river assumptions, so check the exact beat before travelling.
What's coming
Plan ahead
5-day outlook
Water here around 20°C. Nothing cooler within range — carry a thermometer.
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 PLRW6000181886583 (was a stale earlier-cycle value). Source: EEA WISE SWB_SurfaceWaterBody (discodata.eea.europa.eu), verified 2026-06-18.
WFD classification · PLRW6000181886583
The full read · show the working · for brown trout · confidence 80%
How the 30 is built — score × weight = contribution
Temperature30 × 28%8.4
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity62 × 12%7.4
Conditions total= 64
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
Seasons & zones
- Trout1 April → 30 September
- Grayling1 June → 28 February
Related guides
Booking & contacts
Gwda
Google Places
Lowland forest river in northwestern Poland with grayling and brown trout in the upper reaches.
Water temperature for brown trout
Warm — slow20°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 19.6°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots. Otherwise poor — water clarity is in the right range.
Hatch timeline · todayQuiet day
Hatch predictions
Today's headline hatch shown — see all 8 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
Brown Trout fly box
Permits & access
Permit required — see local rules.
- Polish fishing card plus local permit required
- Stable lake-fed sections and local management rules matter more here than mountain-river assumptions, so check the exact beat before travelling.
What's coming
Plan ahead
5-day outlook
Water here around 20°C. Nothing cooler within range — carry a thermometer.
Gallery · 1
Terrain map
About this water
Lowland forest river in northwestern Poland with grayling and brown trout in the upper reaches. Lake-fed sections provide stable flow. Included by the Grayling Society among northern Polish grayling waters—a signal of quality.
- 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 PLRW6000181886583 (was a stale earlier-cycle value). Source: EEA WISE SWB_SurfaceWaterBody (discodata.eea.europa.eu), verified 2026-06-18.
WFD classification · PLRW6000181886583
The full read · show the working · for brown trout · confidence 80%
How the 30 is built — score × weight = contribution
Temperature30 × 28%8.4
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time60 × 13%7.8
Pressure80 × 7%5.6
Insect activity62 × 12%7.4
Conditions total= 64
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
Seasons & zones
- Trout1 April → 30 September
- Grayling1 June → 28 February
Related guides
Booking & contacts