Spate · Granite · Highlands / Strathspey, GB-SCT

River Dulnain

The River Dulnain flowing fast and peat-stained under an old stone packhorse bridge at Carrbridge, surrounded by autumn trees.

The Dulnain drains the Monadhliath mountains and joins the Spey at Dulnain Bridge between Aviemore and Grantown-on-Spey.

Today · Closed season
Hare's Ear Nymph
Forecast · Today
Closed season
Out of season. Try elsewhere.
45% projected
Today's fly
Hare's Ear Nymph
Hare's Ear Nymph
Conditions on the water · Today
Live gauge
Level
Rising
0.18 m
Lifting fast
Water temp7.2°C
ClarityUnfishable
Weather5°C
WindN 20 km/h
Pressure1004 hPa
Rain · recent1.4 mm
Rain · ahead4.0 mm

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

Water temperature for Brown Trout
Cool — slow
7°C est.ideal 10–16°C
0°14°28°
How to fish it · for Brown Trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Likely species
Hatch timeline · todayPeak at 11am

12pm(now) — Autumn Needle Fly

Stage: Creeping nymphsApproach: Heavy nymphActivity: 35%
Peak emergence window

Peak activity at 11am — Autumn Needle Fly (Autumn Needle Fly, Peak emergence window)

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 3 guilds 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 · November highlighted
J
F
M
A
M
J
J
A
S
O
N
D
March BrownHatch
2
3
2
CapererHatch
2
3
3
2
Heather FlyHatch
2
2
Autumn DunHatch
2
3
2

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

Ranked for today
Brown Trout fly box

More opportunist and compact-water fishing. Small nymphs, simple dries and quick-reading of pockets and runs matter more than refined hatch matching.

What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
  1. The River Dulnain flowing fast and peat-stained under an old stone packhorse bridge at Carrbridge, surrounded by autumn trees.
    The Packhorse Bridge
  2. Terrain map of the venue
    Terrain map
About this water

It is one of the more productive wild trout tributaries of the whole Spey system — a fast, clean, stony river that runs over granite and mica-schist and holds wild brown trout in decent numbers through most of its length. Some sea trout and the occasional salmon come up from the Spey but this is wild trout water first and foremost, with good hatches of March browns in spring and medium olives through May and June. Day tickets are easy to come by through the Strathspey Angling Improvement Association and local outlets in Aviemore and Grantown. Proper hill stream fishing, a short drive from some of Scotland's best-known salmon water but quieter than any of it.

  • Granite
Water quality (WFD)
  • Ecology: Moderate
  • Chemical: Unknown
What this classification means

SEPA WFD 2022 — Dulnain: Moderate status. Corrected 2026-06-18 (was recorded Good). Source: SEPA WFD 2022 classification (spatialdata.gov.scot / SEPA Aquatic Classification Hub).

SEPA (Scotland) · UKSC023114

The full read · show the working · for Brown Trout · confidence 75%
How the 0 is built — score × weight = contribution
Temperature52 × 28%14.6
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time40 × 13%5.2
Pressure80 × 7%5.6
Insect activity27 × 12%3.2
Conditions total= 63
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitysurvey-backed invertebrate datasurvey
What would change the calculation
Warmer water — toward the 10–16 °C ideal band — would lift the temperature score.
The dawn and dusk windows score higher than the midday lull.
Related guides
Casting instructors near here
Booking & contacts
At a glance

River Dulnain is a spate river in Highlands / Strathspey, Scotland. The catchment geology is recorded as granite, and the water sits at about 225 m above sea level. The river is described as roughly 38 km long. The species listed for this water is brown trout. Best window recorded for anglers: April to June, September. Core methods listed: upstream wet fly; North Country spiders; dry fly. Level and flow data for this water is linked from 1 gauge. Its Water Framework Directive ecological status is recorded as moderate. Nearby waters in our listings include Spey at 6.0 km, Rothiemurchus Fishery at 15 km and Achagour Fishery at 22 km.