Map of Dublin Lake
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IntermediateShore Dive

Dublin Lake

New Hampshire, United States
Depth0–100 ft (0–30.5 m)
AccessShore
Cert LevelOpen Water; Advanced for deep silt slope
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Best Time

Summer and early fall

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A clear 240-acre glacial lake at about 1,480 feet elevation beneath Mount Monadnock, popular with regional divers and training classes. Shore access points along the northeastern shore off Route 101 lead to a bottom that slopes steeply to about 60 feet past glacial boulder fields before flattening into silt that reaches 90-110 feet. Visibility averages over 30 feet, unusually good for a New England lake; altitude diving procedures apply.

Quick Facts

Depth Range0m – 30.5m
CertificationOpen Water; Advanced for deep silt slope
GearDrysuit or 7mm, dive light, altitude-adjusted dive planning
HazardsAltitude (use altitude dive tables/computer setting), cold thermoclines, deep silt bottom, roadside traffic while gearing up
shore

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