Spate · Mixed · Trøndelag

Surna

Surna venue image
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A well-regarded western Trondelag salmon river with strong summer runs and accessible beat structure.

Prime · Atlantic Salmon
Sunray Shadow · tube medium to long
Primelive now
Prime conditions — go now
River high but settled. Heavy water — fish big and slow.
75% confidence
What moved it
  • Level1.05 mDropping in the last 6h
  • Water temp12.5°C
  • ClarityClearClearing
Today’s fly
Sunray Shadow
Sunray Shadowtube medium to long
Almost indispensable on Trøndelag rivers.
Conditions on the water
Live gauge
Level
Falling
1.05 m
Dropping in the last 6h
Water temp12.5°C
ClarityClear
Weather11°C
WindSE 5 km/h
Pressure1022 hPa
Rain · recent16.0 mm
Rain · ahead0.1 mm

Live readings — water temperature is an estimate where the gauge does not record it.

Water temperature for atlantic salmon
Ideal
13°C est.ideal 1014°C
0°14°28°
How to fish it · for atlantic salmon
When
All day is fishable. Peaks around mid-morning (10-12) and late afternoon (4-6pm). A change in light — cloud passing over the sun, or the first shadow reaching the water — can trigger a take.
Where
Fish the full pool systematically — start at the head, two steps between each cast, work through to the tail. Pay special attention to the classic taking lies: pool heads where current enters, tails where it shallows, and seams alongside faster water.
Method
Medium-paced swing, fly fishing just below the surface. Fish are willing to move — a steady broadside presentation across the current is ideal. Vary speed through the swing.. Floating line, possibly slow intermediate in deeper pools. Small-medium: size 8-12 doubles, small tubes. Fish are willing to move — let them come to the fly.
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
The river is in textbook shape. River dropping nicely into shape after a lift — textbook conditions. Clearing nicely — classic taking conditions. 12.5°C — in the ideal taking range for summer salmon. This is the window experienced salmon anglers wait for — if you can get to the river, go now.
Hatch timeline · todayQuiet day

Hatch predictions

Today's headline hatch shown — see all 8 active hatches hour by hour with Pro.

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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
Salmon runRun
1
2
1
March BrownHatch
2
3
2
GrannomHatch
2
2
Large StoneflyHatch
2
3
2
Yellow SallyHatch
2
3
2

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Atlantic Salmon fly box
Permits & access
Permit required — see local rules.
  • Fiskeravgift plus local Surna beat permit required
  • Equipment disinfection and catch reporting are mandatory
  • Good availability of day and weekly beats.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 1
  1. Terrain map of the venue
    Terrain map
About this water

A well-regarded western Trondelag salmon river with strong summer runs and accessible beat structure. Wading-focused fly fishing is consistent in normal conditions, with tubes early and lighter summer patterns when levels drop. Atlantic salmon are managed under national and river-specific regulations — daily and seasonal quotas, size limits and mid-season evaluations apply, and catch-and-release is widely practised; check current rules before fishing.

Under the surface

The Surna gathers at Øvre Rindal where the Tiåa and the Lomunda meet, and runs some forty-five kilometres broad and steady down the Surnadal to the Surnadalsfjorden at Surnadalsøra, on the border of Trøndelag and Møre og Romsdal. Several smaller rivers feed it from the Trollheimen mountains to the south, and the regulated Folda adds its water through the upper valley. It is a generous, open river — a broad flow over gravel and rock through a wide farmed dale beneath steep fells — long among Norway's renowned salmon and trout rivers, giving up well over a thousand salmon in a good season. The character is classic west-Norwegian holding water: deep pools and even runs on a moderate gradient. Wading is steady on firm gravel and rock, the broad pools rewarding distance and a controlled swing more than any fight with heavy water.

Wading: Broad deep pools

  • Mixed
  • Partly confined
  • Pool riffle
Water quality (WFD)
  • EcologyUnknown
  • ChemicalUnknown
The full read · show the working · for atlantic salmon · confidence 75%
How the river scores — hydrology factors
Water heightMedium Ideal+3.8
Recent riseNone0.0
Falling after liftDropping Nicely Into Shape+4.5
Water temperatureCool To Moderate+2.5
Time in seasonSummer Peak Window+2.3
ClarityClearing+2.4
Hydrology base15.5
Rules that fired
Clearing After Spate Bonus+1
Will they take?Willingcaps the band

Fish should be willing to take — clearing, stained water.

Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
What would change the calculation
No prolonged stable spell before the current rise.
Directions
Seasons & zones
  • Salmon1 June → 31 August
  • TroutOpens June–September
Related guides
Booking & contacts