Massachusetts Bay Information
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Bays of Massachusetts
MASSACHUSETTS BAY Latitude and Longitude:
|Ocean/sea sources||Atlantic Ocean|
|Basin countries||United States|
The bay extends from Cape Ann on the north to Plymouth Harbor on the south, a distance of about 42 miles (68 km). Its northern and southern shores incline toward each other through the entrance to Boston Harbor, where they are about five miles apart. The depth from the base of the triangle to Boston Harbor is about 21 miles (34 km). The westmost point of the bay is at the city of Boston.
The northern shore of Massachusetts Bay is rocky and irregular, but the southern shore low, marshy, and sandy. Along the shores are a number of capes and headlands, and off the coast a number of small islands, especially in the entrance to Boston Harbor. The principal inlets are: on the north coast, Gloucester Harbor, Nahant Bay, Salem Harbor, Marblehead Harbor, and Lynn Harbor, and on the west, Boston Harbor, Dorchester Bay, and Quincy Bay (the two latter being part of the Outer Boston Harbor), and on the south coast, Hingham Bay. Massachusetts Bay is itself part of the Gulf of Maine, which extends from Nova Scotia south to Cape Cod Bay. Cape Cod Bay is sometimes considered to be part of Massachusetts Bay. Under this interpretation, the name "Massachusetts Bay" denotes the entire rectangular area of ocean between Cape Ann and Cape Cod.
The Massachusetts Bay Disposal Site in deep water off the coast has been used for ocean dumping, to dispose of munitions, dredged material, rock and construction debris and sunken vessels.  Between 1919 and 1970 chemical warfare munitions were dumped, and after World War II hundreds of thousands of tons of surplus artillery and munitions, which are the majority of munitions washed up on shore. Most of them are inert UXO but occasionally they are live. Fishermen have brought a torpedo into Provincetown, Massachusetts, a depth charge into Gloucester, Massachusetts and mustard munitions into New Bedford, Massachusetts. 
Massachusetts Bay gave its name to the Massachusetts Bay Colony, which is one of the two predecessor colonies of the current state of Massachusetts.
- "Massachusetts Bay Disposal Site Maps, Open-File Report 98-344". U.S. Geological Survey. 1998. Retrieved 31 July 2015.
- Edgar B. Herwick III (29 July 2015). "Explosive Beach Objects-- Just Another Example Of Massachusetts' Charm". WGBH news. PBS. Retrieved 31 July 2015.
- This article incorporates text from a publication now in the public domain: Rines, George Edwin, ed. (1920). . Encyclopedia Americana.
- Gilman, D. C.; Peck, H. T.; Colby, F. M., eds. (1905). . New International Encyclopedia (1st ed.). New York: Dodd, Mead.
Media related to Massachusetts Bay at Wikimedia Commons
- . Collier's New Encyclopedia. 1921.