Stoneflies
Gammarids
- Ecology: Good
- Chemical: Unknown
WFD classification · SE485DFE01-685F-41FB-B54A-E55BEB82EAE6
Water temperature for Grayling
Ideal6°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.
Likely species
Hatch timeline · todayPeak at 10:00
12:00(now) — Black Midge
Stage: On emergersApproach: Emerger or dryActivity: 57%
Also:Autumn Needle Fly40%Iron Blue23%
Peak emergence window3 food groups active
Peak activity at 10:00 — Black Midge (Black Midge, Peak emergence window)
Sub-surface · on the nymphunder the surface
Hatch predictions
Supporters see the full sub-surface read.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Supporters see what else is on the menu.
Start free trial14-day free trial. Cancel anytime.
Evidence
Survey-backed · regionalHigh confidence
Backed by regional invertebrate surveys; no sampling on this exact reach yet.
Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
1
Nordic SpringflyHatch
2
3
3
2
Ladoga CaddisHatch
2
3
2
Evening SedgeHatch
2
3
3
3
2
Arctic Cased CaddisHatch
1
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Grayling
Hook 14–18 · Fly
in season · matches water height
Permits & access
Permit required — see local rules.
- Fiskekort required for the Ammarnäs area, with local rules varying between streams, rivers and lakes
- Check exactly which waters and zones are covered before assuming one permit fits everything.
What's coming
Plan ahead
5-day outlook
Gallery · 2
Vindelåforsen rapids on the Vindelälven at Ammarnäs, Swedish Lapland Terrain map
Water quality (WFD)
The full read · show the working · for Grayling · confidence 75%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time50 × 13%6.5
Pressure80 × 7%5.6
Insect activity51 × 12%6.1
Conditions total= 79
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Trout 15 June → 31 August
- Char varies_by_permit → varies_by_permit
Arctic char abundant in Ammarnäs's lakes and deeper pools. Lake seasons and char fishing may differ from stream trout dates. Ammarnäs FVOF permits specify which waters and which seasons for char — always consult the permit holder before targeting char.
Related guides
Booking & contacts
Ammarnäs waters
Water temperature for Grayling
Ideal6°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.
Likely species
Hatch timeline · todayPeak at 10:00
12:00(now) — Black Midge
Stage: On emergersApproach: Emerger or dryActivity: 57%
Also:Autumn Needle Fly40%Iron Blue23%
Peak emergence window3 food groups active
Peak activity at 10:00 — Black Midge (Black Midge, Peak emergence window)
Sub-surface · on the nymphunder the surface
Hatch predictions
Supporters see the full sub-surface read.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Supporters see what else is on the menu.
Start free trial14-day free trial. Cancel anytime.
Evidence
Survey-backed · regionalHigh confidence
Backed by regional invertebrate surveys; no sampling on this exact reach yet.
Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
1
Nordic SpringflyHatch
2
3
3
2
Ladoga CaddisHatch
2
3
2
Evening SedgeHatch
2
3
3
3
2
Arctic Cased CaddisHatch
1
2
2
2
1
Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.
Ranked for today
Fly box · Grayling
Hook 14–18 · Fly
in season · matches water height
Permits & access
Permit required — see local rules.
- Fiskekort required for the Ammarnäs area, with local rules varying between streams, rivers and lakes
- Check exactly which waters and zones are covered before assuming one permit fits everything.
What's coming
Plan ahead
5-day outlook
Gallery · 2
Vindelåforsen rapids on the Vindelälven at Ammarnäs, Swedish Lapland Terrain map
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
WFD classification · SE485DFE01-685F-41FB-B54A-E55BEB82EAE6
The full read · show the working · for Grayling · confidence 75%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time50 × 13%6.5
Pressure80 × 7%5.6
Insect activity51 × 12%6.1
Conditions total= 79
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
- Trout 15 June → 31 August
- Char varies_by_permit → varies_by_permit
Arctic char abundant in Ammarnäs's lakes and deeper pools. Lake seasons and char fishing may differ from stream trout dates. Ammarnäs FVOF permits specify which waters and which seasons for char — always consult the permit holder before targeting char.
Related guides
Booking & contacts