Tailwater · Mixed · New Hampshire, US

Connecticut Lakes / Upper Connecticut River

Wide view across Lake Francis, a reservoir on the upper Connecticut River, with forested hills and mountains in the background, Pittsburg, New Hampshire

Up in the far north of New Hampshire, where the Connecticut River is born out of a chain of cold lakes against the Quebec line, Pittsburg holds the state's best landlocked salmon and brook trout fishing — moose country, big woods, and a river that fishes as a series of connected lake-outlet reaches.

Today · Not the day for it
Pheasant Tail 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
Pheasant Tail Nymph
Pheasant Tail Nymph
Conditions on the water · Today
Live gauge
Level
Rising
0.84 m
Lifting fast
Water temp16.0°C
ClarityUnfishable
Weather15°C
WindN 15 km/h
Pressure1022 hPa
Rain · recent1.1 mm
Rain · ahead31.8 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
Ideal
16°C est.ideal 1016°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.
Why this works
Excellent — water temperature is right today, though time of day could be better.
Likely species
Hatch timeline · todayPeak at 7am

12pm(now) Trico (Eastern)

Stage: On emergersApproach: Emerger or dryActivity: 36%
Also:Reed Smut28%
3 food groups active

Peak activity at 7am — Trico (Eastern) (Trico (Eastern))

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
Brown Trout fly box
Permits & access
Permit required — see local rules.
  • NH salmon season opens 1 April on managed waters; the Upper Connecticut reaches carry water-specific rules — verify exact Connecticut Lakes / Upper Connecticut rules against NH Fish & Game
  • Northern access and weather are factors.
What's coming
Plan ahead
5-day outlook
Other water nearby · 3
Gallery · 2
  1. Wide view across Lake Francis, a reservoir on the upper Connecticut River, with forested hills and mountains in the background, Pittsburg, New Hampshire
    Lake Francis on the Connecticut River, Pittsburg, New Hampshire
  2. Terrain map of the venue
    Terrain map
About this water

Up in the far north of New Hampshire, where the Connecticut River is born out of a chain of cold lakes against the Quebec line, Pittsburg holds the state's best landlocked salmon and brook trout fishing — moose country, big woods, and a river that fishes as a series of connected lake-outlet reaches. The open-water salmon season starts on the first of April on the managed lakes, and the river reaches below First and Second Connecticut hold salmon, brook trout, and stocked rainbows and browns. It's a lake-and-river rhythm: salmon move with the smelt and the outlet flows, brookies hold in the cold tributaries and pockets. Northern, quiet, and weather-exposed — this is New Hampshire at its most salmon-and-river-focused, not the big managed lakes.

  • Mixed
Water quality · US Clean Water Act
  • Aquatic lifeNot assessed
  • Fish consumptionImpaired
What this classification means

Fish consumption: Consumption advisory (Mercury) — fish for sport, not the table.

EPA ATTAINS assessment unit 'FIRST CONNECTICUT LAKE' (NHLAK801010102-02), 2024 Integrated Report. Aquatic Life use: Insufficient Information. Listed impairment causes: Mercury. This is a Clean Water Act assessment-unit classification (the US analogue of WFD), not a live reading.

Status is for the Clean Water Act assessment unit covering this reach.

EPA ATTAINS (Clean Water Act) · NHLAK801010102-02

The full read · show the working · for Brown Trout · confidence 90%
How the 83 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity95 × 18%17.1
Feeding Time55 × 13%7.2
Pressure80 × 7%5.6
Insect activity59 × 12%7.1
Conditions total= 83
Can you trust it?
Water temperaturelive gauge readinggauge
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