Rules at a glance
- Licence required
Water temperature for Atlantic Salmon
Ideal13°C est.ideal 10–16°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Morning into early afternoon.
Where
Pool tails, steadier runs, and any water with pace.
Method
Fish a sensible line-and-fly combination for the height and pace of water.
Kit
13 ft #8/9 double-hander in spate, 10 ft #8 single in low water. Floating line plus a fast-sink tip. 12–15 lb fluoro tippet.
Why this works
Excellent — water temperature is right today, though river flow could be better.
Likely species
Mayflies
Caddisflies
Caddisflies- Large sedgesMost likelyNearest relative#8–10 · AdultBig waked sedge in the last light and after dark.
- Green SedgeAlso possibleLower confidenceNearest relative#10–12–14–16 · NymphFree-living green caddis larva; fast stony riffles.
- Net-spinning caddisAlso possibleLower confidenceNearest relative#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
- Rhyacophila nubila (Nordic free-living caddis)Also possibleLower confidenceNearest relative#10–12–14–16 · NymphPrincipal free-living caddis; larva a year-round searcher.
Gammarids
Hatch timeline · tomorrowPeak at 14h
12h(now) — Daddy Long Legs
Stage: On emergersApproach: Emerger or dryActivity: 46%
Also:Cinnamon Sedge43%Pale Watery40%
Weather boost10 food groups active
Peak activity at 14h — Brown Sedge (Brown Sedge, 12 food groups active)
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 · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Salmon runRun
1
2
2
2
2
2
1
Sea trout runRun
1
2
2
2
2
2
2
2
1
Trout seasonSeason
1
2
2
2
2
2
2
2
1
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
Fly box · Atlantic Salmon
Permits & access
Permit required — see local rules.
- Fisketegn + local permit
- Some free public access areas
- Sea trout currently protected in parts of the system upstream of Lilleåen — check current rules carefully.
What's coming
Plan ahead
5-day outlook
Other water nearby · 2
Gallery · 2
The Gudenå near Resenbro Terrain map
Why this score · for Atlantic Salmon
- Temperature10030% weight
- Flow6025% weight
- Clarity9520% weight
- Feeding Time9015% weight
- Pressure8510% weight
Directions
Seasons & zones
- Salmon 1 April → 31 October
- Sea trout 1 March → 30 November
- Trout 1 March → 30 November
Sea trout: Variable seasonal (2026)
Related guides
Booking & contacts
Gudenå
Water temperature for Atlantic Salmon
Ideal13°C est.ideal 10–16°C
0°14°28°
How to fish it · for Atlantic Salmon
When
Morning into early afternoon.
Where
Pool tails, steadier runs, and any water with pace.
Method
Fish a sensible line-and-fly combination for the height and pace of water.
Kit
13 ft #8/9 double-hander in spate, 10 ft #8 single in low water. Floating line plus a fast-sink tip. 12–15 lb fluoro tippet.
Why this works
Excellent — water temperature is right today, though river flow could be better.
Likely species
Caddisflies
- Large sedgesMost likelyNearest relative#8–10 · AdultBig waked sedge in the last light and after dark.
- Green SedgeAlso possibleLower confidenceNearest relative#10–12–14–16 · NymphFree-living green caddis larva; fast stony riffles.
- Net-spinning caddisAlso possibleLower confidenceNearest relative#12–14–16 · PupaWidespread riffle net-spinner; evening emergence.
- Rhyacophila nubila (Nordic free-living caddis)Also possibleLower confidenceNearest relative#10–12–14–16 · NymphPrincipal free-living caddis; larva a year-round searcher.
Hatch timeline · tomorrowPeak at 14h
12h(now) — Daddy Long Legs
Stage: On emergersApproach: Emerger or dryActivity: 46%
Also:Cinnamon Sedge43%Pale Watery40%
Weather boost10 food groups active
Peak activity at 14h — Brown Sedge (Brown Sedge, 12 food groups active)
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 · September highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Salmon runRun
1
2
2
2
2
2
1
Sea trout runRun
1
2
2
2
2
2
2
2
1
Trout seasonSeason
1
2
2
2
2
2
2
2
1
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
Fly box · Atlantic Salmon
Permits & access
Permit required — see local rules.
- Fisketegn + local permit
- Some free public access areas
- Sea trout currently protected in parts of the system upstream of Lilleåen — check current rules carefully.
What's coming
Plan ahead
5-day outlook
Other water nearby · 2
Gallery · 2
The Gudenå near Resenbro Terrain map
Why this score · for Atlantic Salmon
- Temperature10030% weight
- Flow6025% weight
- Clarity9520% weight
- Feeding Time9015% weight
- Pressure8510% weight
Directions
Seasons & zones
- Salmon 1 April → 31 October
- Sea trout 1 March → 30 November
- Trout 1 March → 30 November
Sea trout: Variable seasonal (2026)
Related guides
Booking & contacts