Stoneflies
Gammarids
- Ecology: Good
- Chemical: Unknown
WFD classification · NO002-1666-R
Rules at a glance
- Permit required
Water temperature for Grayling
Ideal6°C est.ideal 4–14°C
0°14°28°
How to fish it · for Grayling
When
August through September is prime — Norwegian grayling fishing is at its best in late summer when olives and sedges bring fish up. Mid-day rises in cooler weather; long daylight stretches the fishable window.
Where
Glomma's grayling water at Kvennan is wide and demanding. Gravel runs, the heads of riffles, and deeper glide tails. Find the shoals; wade carefully.
Method
Dry to risers with sedges, olives, and the late-summer spinner falls. Euro-nymphing through the deeper pockets when fish aren't up. Long fine tippet — Glomma grayling are wary in clear water.
Kit
9 to 10 ft #4 for dries; 10 ft #3 nymphing rod for the deep pockets. Floating line, 12 ft leader to 4 to 5 lb fluoro tippet.
Likely species
Hatch timeline · todayPeak at 10:00
12:00(now) — Black Midge
Stage: On emergersApproach: Emerger or dryActivity: 59%
Also:Autumn Needle Fly40%Iron Blue24%
Peak emergence window4 food groups active
Peak activity at 10:00 — Black Midge (Black Midge, Peak emergence window)
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 2 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 2 as a supporter.
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
2
1
Grayling seasonSeason
1
2
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
Permits & access
Permit required — see local rules.
- Local fiskekort required for the Kvennan beat or controlling association
- Inland trout-and-grayling rules apply here; this is not an anadromous salmon river requiring the national salmon fee.
What's coming
Plan ahead
5-day outlook
Other water nearby · 2
Gallery · 2
River at Dusk Terrain map
Water quality (WFD)
The full read · show the working · for Grayling · confidence 55%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time10 × 13%1.3
Pressure80 × 7%5.6
Insect activity39 × 12%4.7
Conditions total= 73
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 1 June → 15 September
- Grayling 1 June → 15 September
Related guides
Booking & contacts
Permits & access
- Inatur — Kvennan Fly FishingDirect permit page for Kvennan Fly Fishing on the Glomma. Stronger and more accurate than a generic salmon-platform link because this is primarily a grayling and trout destination.
- Fishspot — Glomma Kvennan Fly FishingSecondary English-language route with fishery details and permit context for Kvennan.
Glomma (Kvennan)
Water temperature for Grayling
Ideal6°C est.ideal 4–14°C
0°14°28°
How to fish it · for Grayling
When
August through September is prime — Norwegian grayling fishing is at its best in late summer when olives and sedges bring fish up. Mid-day rises in cooler weather; long daylight stretches the fishable window.
Where
Glomma's grayling water at Kvennan is wide and demanding. Gravel runs, the heads of riffles, and deeper glide tails. Find the shoals; wade carefully.
Method
Dry to risers with sedges, olives, and the late-summer spinner falls. Euro-nymphing through the deeper pockets when fish aren't up. Long fine tippet — Glomma grayling are wary in clear water.
Kit
9 to 10 ft #4 for dries; 10 ft #3 nymphing rod for the deep pockets. Floating line, 12 ft leader to 4 to 5 lb fluoro tippet.
Likely species
Hatch timeline · todayPeak at 10:00
12:00(now) — Black Midge
Stage: On emergersApproach: Emerger or dryActivity: 59%
Also:Autumn Needle Fly40%Iron Blue24%
Peak emergence window4 food groups active
Peak activity at 10:00 — Black Midge (Black Midge, Peak emergence window)
Sub-surface · on the nymphunder the surface
Hatch predictions
Top nymph shown — see all 2 guilds as a supporter.
Start free trial14-day free trial. Cancel anytime.
Beyond the hatch · worth watchingambient prey(1)
Hatch predictions
Top prey shown — see all 2 as a supporter.
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
2
1
Grayling seasonSeason
1
2
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
Permits & access
Permit required — see local rules.
- Local fiskekort required for the Kvennan beat or controlling association
- Inland trout-and-grayling rules apply here; this is not an anadromous salmon river requiring the national salmon fee.
What's coming
Plan ahead
5-day outlook
Other water nearby · 2
Gallery · 2
River at Dusk Terrain map
Water quality (WFD)
- Ecology: Good
- Chemical: Unknown
WFD classification · NO002-1666-R
The full read · show the working · for Grayling · confidence 55%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time10 × 13%1.3
Pressure80 × 7%5.6
Insect activity39 × 12%4.7
Conditions total= 73
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 1 June → 15 September
- Grayling 1 June → 15 September
Related guides
Booking & contacts
Permits & access
- Inatur — Kvennan Fly FishingDirect permit page for Kvennan Fly Fishing on the Glomma. Stronger and more accurate than a generic salmon-platform link because this is primarily a grayling and trout destination.
- Fishspot — Glomma Kvennan Fly FishingSecondary English-language route with fishery details and permit context for Kvennan.