Lake Merrimack

Lake Merrimack was a glacial lake that formed during the late Pleistocene epoch. After the Laurentide Ice Sheet retreated, glacial ice melt accumulated at the terminal moraine and blocked up the Merrimack River, creating the narrow lake. The lake extended from Manchester to Plymouth, New Hampshire. It is unknown when the lake was drained.

Lake Hitchcock is an important part of the geology of New Hampshire. It experienced annual layering of sediments, or varves: silt and sand in the summertime (due to glacial meltwater) and clay in the wintertime (as the lake froze).

References

External links

Information on the Pemigewasset River Archived 2012-07-30 at the Wayback Machine

43°20′N 71°37′W / 43.333°N 71.617°W / 43.333; -71.617

Pleistocene proglacial lakes and related seas

Africa

Lake Makgadikgadi
Lake Ptolemy

Antarctica

Lake Washburn

Asia

Europe

Baltic Sea	Ancylus Lake Baltic Ice Lake Littorina Sea Mastogloia Sea Yoldia Sea
Russia	Lake Komi
Great Britain	Lake Harrison Lake Lapworth Lake Pickering

North America

Nelson River drainage	Proglacial lakes of Minnesota Lake Agassiz Lake Bassano Lake Souris
James Bay drainage	Lake Ojibway Tyrrell Sea
Great Lakes	Lake Admiralty Lake Algonquin (Multiple basins) Lake Arkona Lake Chicago Lake Chippewa Lake Duluth Early Lake Erie Lake Frontenac Lake Houghton (glacial) Glacial Lake Iroquois Lake Lundy Lake Dana Lake Maumee Lake Minong Nipissing Great Lakes (Multiple basins) Early Lake Ontario Lake Saginaw Lake Stanley Lake Tonawanda Lake Warren Lake Wayne Lake Whittlesey Champlain Sea
Columbia River system	Lake Allison Glacial Lake Columbia Lake Lewis Glacial Lake Missoula
Great Basin system	Lake Bonneville Lake Lahontan
Puget Sound system	Glacial Lake Russell Glacial Lake Hood Lake Nisqually Lake Puyallup Glacial Lake Sammamish Lake Skokomish
Upper Missouri River	Lake Cut Bank Lake Chouteau Lake Great Falls Lake Circle Lake Jordan (Montana) Lake Musselshell Lake Glendive Lake McKenzie
Upper Mississippi drainage	Lake Kankakee Kankakee Outwash Plain Lake Wisconsin
Ohio drainage	Lake Monongahela Lake Tight Teays River
Hudson valley	Lake Albany Lake Passaic
New England	Lake Cape Cod Lake Connecticut Lake Hitchcock Lake Merrimack Lake Nantucket Sound Lake Stowe
California	Lake Cahuilla Lake Corcoran Lake Harper Lake Manix Lake Manly Lake Modoc Lake Mojave Lake Panamint Lake Russell Lake Tecopa Lake Thompson
Rio Grande Rift	Lake Alamosa Lake Estancia Lake Palomas Lake San Agustín
Alaska	Lake Atna