Tailwater · Mixed · Maine, US

Grand Lake Stream

A wide stretch of Grand Lake Stream with an angler fly fishing near the bank and a dam spillway in the distance

Grand Lake Stream is a small, storied piece of water in Maine's eastern lake country — a short river between West Grand Lake and Big Lake that has been a landlocked salmon shrine for over a century, with a guiding tradition and a village named for it.

Today · Not the day for it
Czech Nymph
Forecast · Today
Not the day for it
Not much stacked in your favour today. Worth an hour if you are nearby, not worth the special trip.
45% projected
Today's fly
Czech Nymph
Czech Nymph
Conditions on the water · Today
Live gauge
Level
Rising
0.55 m
Lifting fast
Water temp11.5°C
ClarityUnfishable
Weather17°C
WindN 8 km/h
Pressure1023 hPa
Rain · recent4.2 mm
Rain · ahead11.7 mm

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

Water temperature for Brook Trout
Ideal
12°C est.ideal 1016°C
0°14°28°
How to fish it · for Brook 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.
Why this works
Excellent — water temperature is right today, though time of day could be better.
Likely species
Hatch timeline · todayPeak at 12pm

12pm(now) Eastern Blue-Winged Olive

Stage: On emergersApproach: Emerger or dryActivity: 55%
Also:Black Midge25%
Peak emergence window4 food groups active

Peak activity at 12pm — Eastern Blue-Winged Olive (Eastern Blue-Winged Olive, Peak emergence window)

Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds with Pro.

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Beyond the hatch · worth watchingambient prey(1)

Hatch predictions

Top prey shown — see all 3 with Pro.

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Evidence
Records-basedModerate confidence

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

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
2
2
1
SulphurHatch
2
3
2
Trico (Eastern)Hatch
2
3
3
2
Eastern Blue-Winged OliveHatch
2
3
3
3
3
3
3
3
2
Eastern Summer BWO (Drunella)Hatch
2
3
3
2

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

Ranked for today
Brook Trout fly box
Local fly shops: New England Fly Co.
Permits & access
Permit required — see local rules.
  • Fly-fishing-only with special-law bag/size limits — verify the current Maine DIFW Grand Lake Stream listing before relying on it
  • A small, pressured, low-clear water — finesse and care matter.
What's coming
Plan ahead
5-day outlook
Gallery · 2
  1. A wide stretch of Grand Lake Stream with an angler fly fishing near the bank and a dam spillway in the distance
    Grand Lake Stream, a famous landlocked salmon stream in Washington County, Maine
  2. Terrain map of the venue
    Terrain map
About this water

Grand Lake Stream is a small, storied piece of water in Maine's eastern lake country — a short river between West Grand Lake and Big Lake that has been a landlocked salmon shrine for over a century, with a guiding tradition and a village named for it. It's fly-fishing-only and intimate: a couple of miles of pools and pocket water where spring salmon run up out of the lake on the smelt and rising fish reward a careful, technical approach with smaller flies. It's pressured for its size, low and clear much of the time, and the salmon are educated, so this is finesse fishing — light tippet, soft presentations, and respect for autumn spawners. A compact classic — delicate, rule-sensitive water that rewards a careful approach.

Under the surface

Grand Lake Stream is a short, famous river in the deep woods of eastern Maine — barely three miles connecting West Grand Lake to Big Lake — and it is, by long tradition, one of the great landlocked salmon waters in the country. The landlocked salmon, a freshwater Atlantic salmon that never goes to sea, runs into the stream to chase smelt and is fished for here with the reverence the fish deserves. It's a clear, cold, freestone-and-ledge river over rounded cobble and granite, its flow governed by the dam at the lake outlet, threading classic North Woods spruce-and-pine forest where the canoe and the guide are still part of the fabric. The bed is freestone cobble and bedrock, the famous pools named and known. Wading is honest, rocky work. It is small, remote, historic water for a beautiful and particular fish, in country that still feels genuinely wild.

Wading: Slick rock, release governed flow

  • Mixed
  • Partly confined
  • Pool riffle
  • Step pool
The full read · show the working · for Brook Trout · confidence 75%
How the 81 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time45 × 13%5.9
Pressure75 × 7%5.3
Insect activity60 × 12%7.2
Conditions total= 81
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
  • Trout 1 April30 September
Related guides
Booking & contacts