Pontoosuc Lake
Why dive here
With 35+ marine species recorded in the area - including nurse sharks - Pontoosuc Lake offers some of New England's richest diving. Water ranges 4-19°C, warmest July, August, September.
Pontoosuc Lake in New England is a straightforward freshwater dive, perfect for beginners or those refreshing skills. Maximum depth sits at about 6 meters, so bottom time is generous. We've found the visibility can be variable, but you'll usually spot sunfish and perch amongst the weeds. It’s a good spot for buoyancy practice or testing new gear without strong currents or deep commitments.
Typical Pontoosuc Lake Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Cold water this month (avg 15°C). Drysuit or thick wetsuit (7mm+) recommended.
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Conditions
Ocean conditions, forecast and tides for Pontoosuc Lake
Pontoosuc Lake Ocean Conditions
Monthly averages for Pontoosuc Lake, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (42.6, -70.6) (0km away)
October Averages
Sea Temperature
15°C
59°F · Range: 12.8–18.1°C
Air Temperature
10°C
50°F
Wind Speed
3.78 m/s
7.3 knots
Atmospheric Pressure
1017 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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