Freestone · Volcanic · Vesturland, IS

Grímsa

Tröllafossar rapids on the Grímsá, turbulent white water in a rocky channel.
Tomorrow · Closed season
Forecast · Tomorrow
Closed season
Out of season. File this water for the right month.
50% projected
Conditions on the water · Tomorrow
Live gauge
Level
Falling
1.41 m
Dropping after lift
Water temp0.9°C
ClarityClearing
Weather-4°C
WindN 12 km/h
Pressure987 hPa
Rain · recent2.7 mm
Rain · ahead1.3 mm

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

Water temperature for Atlantic Salmon
Too cold
1°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.
Hatch timeline · tomorrowQuiet day

Low insect activity predicted today

Evidence
Records-basedModerate confidence

Based on species-occurrence records, not local invertebrate surveys.

Salmon run timing
2024 season

Through the year
0–3 scale · October highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Salmon runRun
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 · Atlantic Salmon
Permits & access
Permit required — see local rules.
  • Very limited rods and advance booking are standard, but Grímsa is more about scarce intimate water than sheer river scale
  • Catch-and-release and current river-specific rules should be checked before fishing.
What's coming
Plan ahead
5-day outlook
Other water nearby · 5
Gallery · 2
  1. Tröllafossar rapids on the Grímsá, turbulent white water in a rocky channel.
    Tröllafossar rapids, Grímsá
  2. Terrain map of the venue
    Terrain map
Why this score · for Atlantic Salmon
  • Temperature030% weight
  • Flow6025% weight
  • Clarity9520% weight
  • Feeding Time8515% weight
  • Pressure8510% weight
Directions
Seasons & zones
  • Salmon 24 June → 30 September
Related guides
Booking & contacts