Medium River · Mixed · Innlandet (Hedmark), NO

Trysilelva

Trysilelva — Trysilelva-2007
Tomorrow · Closed season
Perdigón
Forecast · Tomorrow
Closed season
Out of season. Try elsewhere.
65% projected
Today's fly
Perdigón
Perdigón
Conditions on the water · Tomorrow
Live gauge
Level
Rising
0.02 m
Lifting fast
Water temp7.6°C
ClarityVery coloured
Weather11°C
WindN 9 km/h
Pressure1030 hPa
Rain · recent5.6 mm
Rain · ahead3.1 mm

The nearest gauge doesn't record temperatures, so we've estimated it — defer to the river keeper's advice.

Water temperature for Grayling
Ideal
8°C est.ideal 4–14°C
0°14°28°
How to fish it · for Grayling
When
August through September is prime. Trysil's grayling fish well to the late-summer hatches; mid-day rises in cooler weather.
Where
Gravel runs and the heads of riffles through the Trysil valley. Smaller-scale than Glomma — read each pocket carefully.
Method
Dry to risers with sedges and olives. Euro-nymphing through deeper pockets when fish aren't up. Long fine tippet for the clear Trysil 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
Gammarids
Hatch timeline · tomorrowPeak at 13h

12h(now) — Iron Blue

Stage: On emergersApproach: Emerger or dryActivity: 23%
Also:Black Midge21%

Peak activity at 13h — Iron Blue (Iron Blue, Weather boost)

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 4 guilds as a supporter.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 2 as a supporter.

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Evidence
Survey-backed · regionalHigh confidence

Backed by regional invertebrate surveys; no sampling on this exact reach yet.

Through the year
0–3 scale · September 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
Small Perdigón
Small Perdigón
Hook 14–18 · Fly
in season · matches water height
Permits & access
Permit required — see local rules.
  • Local fiskekort required from riparian association
  • Standard inland trout/grayling rules apply.
What's coming
Plan ahead
5-day outlook
Other water nearby · 2
Renaelva
46 km
0
Brown trout · Grayling
Glomma (Kvennan)
147 km
Brown trout · Grayling
Gallery · 2
  1. Trysilelva — Trysilelva-2007
    Trysilelva-2007
  2. Terrain map of the venue
    Terrain map
Water quality (WFD)
  • Ecology: Poor
  • Chemical: Unknown
What this classification means

WFD re-coded 2026-06-18: prior id NO311-1-R returned no row in EEA WISE. Re-mapped to NO311-249-R 'Trysilelva Innbygda - Sagnfossen', the reach at Innbygda/Trysil (venue coord 61.35,12.25). Status: EEA WISE 2022 (3rd RBMP) — Poor reflects hydromorphology/regulation. Confidence: medium — VERIFY reach. Source: discodata.eea.europa.eu.

WFD classification · NO311-249-R

The full read · show the working · for Grayling · confidence 90%
How the 0 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time90 × 13%11.7
Pressure80 × 7%5.6
Insect activity55 × 12%6.6
Conditions total= 85
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
Directions
Apple MapsGoogle Maps
Seasons & zones
  • Trout 1 June → 15 September
  • Grayling 1 June → 15 September
Related guides
Grayling Playbookgrayling tacticsEuro Nymphingsubsurface methods
Booking & contacts