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New Hampshire Department of Environmental Services

New Hampshire Lake Ice-In and Ice-Out Records

Ice out at Highland Lake, Andover, NHThe NH DES VLAP began tracking Lake ice-in and ice-out dates in 2011 as there was no central repository for this information in New Hampshire. Many New Hampshire lakes have historical ice out records dating back to the early 1900's, Lakes Sunapee and Winnipesaukee to the 1880's, but not as much data exists for ice-in records. Tracking both ice-in and ice-out allows the determination of total ice cover days which is another important part of tracking physical, chemical and biological changes to lakes over time. With the erratic weather conditions experienced in recent years, the information can also help track climatological shifts and trends.

"Ice-out" is the term typically used to describe when the ice leaves a lake in the spring. Some consider this to be when the ice has melted and broken up enough to navigate a boat from one end of a lake or pond to the other, or when the lake is completely free of ice. Although ice-out definitions may vary slightly from lake to lake, the important thing is consistency and utilizing the same method to determine ice-out for your lake each year. "Ice-in" is the term used to describe when ice covers a lake in the fall. Ice-in can be more difficult to determine but typically is when the lake is completely or nearly completely covered with ice, however a thin skim of ice is not considered ice-in.

VLAP currently has records for approximately 50 New Hampshire lakes and hopes to add additional lakes to the database. To enter your lake's ice-in and ice-out data utilize the on-line form at Once the data for you lake have been entered, historical records are stored electronically and area available upon request for use in lake association publications, scientific research and articles. For additional information, please contact Sara Steiner, VLAP Coordinator, at

NH Lakes Tracking Ice-in and/or Ice-Out (updated 12/26/2013)

Lake Name Town
Angle Pond Sandown
Armington Lake Piermont
Blaisdell Lake Sutton
Bradley Lake Andover
Canobie Lake Salem
Cobbetts Pond Windham
Crescent Lake Acworth
Crystal Lake Gilmanton
Dublin Lake Dublin
Halfmoon Pond Washington
Harantis Lake Chester
Highland Lake Andover
Highland Lake Stoddard
Island Pond Washington
Jenness Pond Northwood
Kezar Lake North Sutton
Kilton Pond Grafton
Kolelemook Lake Springfield
Lees Pond Moultonboro
Lower Danforth Pond Freedom
Massasecum Lake Bradford
Messer Pond New London
Millen Pond Washington
Monomonac Lake Rindge
Norway Pond Hancock
Ossipee Lake Ossipee
Otter Pond Sunapee
Pearly Pond Rindge
Pine River Pond Wakefield
Pleasant Lake Deerfield
Pleasant Lake New London
Pool Pond Rindge
Robinson Pond Hudson
Silver Lake Harrisville
Skatutakee Lake Harrisville
Stinson Lake Rumney
Spofford Lake Chesterfield
Squam Lks Holderness
Sunapee Lake Sunapee
Lake Tarleton Piermont
Todd Lake Newbury
Waukeena Lake Danbury
Waukewan Lake Meredith
Wicwas Lake Meredith
Winnepocket Lake Webster
Winona Lake New Hampton


NH Department of Environmental Services | 29 Hazen Drive | PO Box 95 | Concord, NH 03302-0095
(603) 271-3503 | TDD Access: Relay NH 1-800-735-2964 | Hours: M-F, 8am-4pm

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