Mystic Lakes (Boston) facts for kids
Quick facts for kidsMystic Lakes
Aerial photograph of Upper Mystic Lake
|Location||Arlington, Medford, and Winchester, Massachusetts|
|Primary inflows||Aberjona River|
|Primary outflows||Mystic River|
|Basin countries||United States|
The lakes lie at an elevation of 1 meter above sea level, within the towns of Winchester, Arlington, and Medford, Massachusetts. Upper Mystic Lake is fed by the Aberjona River, and drains south, over the Mystic Dam, into Lower Mystic Lake, which in turn empties into the Mystic River and then Boston Harbor.
Lower Mystic Lake is a meromictic lake, which means that the lake has a deep layer of water that rarely, if ever, mixes with its top waters. As a consequence, the sediments at the bottom of Lower Mystic Lake accumulate in annual layers (or varves) that have been nearly undisturbed for a thousand years. Such varves in meromictic lakes preserve an historical record somewhat like tree rings do. In the case of Lower Mystic Lake, the varves have been used by Mark Besonen and his collaborators to study the historical incidence of hurricanes.
The eastern shore of the lakes is part of the Mystic River Reservation managed by the Massachusetts Department of Conservation and Recreation.
The lakes were previously part of the drinking water supply for Charlestown and later Boston (see Massachusetts Water Resources Authority).
In the 1600s, the Squaw Sachem of Mistick, who deeded much of the land in Greater Boston to settlers, resided near the Mystics Lakes.
Mystic Lakes (Boston) Facts for Kids. Kiddle Encyclopedia.