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Wednesday, May 18, 2011

Rumney Marsh Academy, Revere: May 20

42º 24' 47" N
71º 00' 12" W

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The Rumney Marsh Academy is located in Revere, a city of just under 6 square miles and just over 42,000 residents located on Cape Cod Bay just a few miles to the north of Boston's Logan Airport. The historic city of Revere is the birthplace of noted American author Horatio Alger

The Rumney Marsh Academy is located on American Legion Parkway, less than a mile from the important wetland for which it is named. The Rumney Marsh is the largest wetland area on the north side of Boston. Coastal environments can change quite rapidly, especially where human settlements are close to the coastal environment. In the case of the Rumney Marsh, however, its general shape is roughly the same as it was over a century ago, according to the 1891 map shown below.

According to the Rumney Marsh Information Page hosted by the U.S. Environmental Protection Agency, glaciers were involved in the formation of Rumney Marsh in three ways. First, a glacier deposited the sand that forms Revere Beach, separating the Marsh from the Atlantic Ocean and diverting the lower stretch of the Saugus River a bit northward. Second, outwash from melting glaciers carried much of the silt that forms the marsh. Finally, when glaciers retreated throughout the Northern Hemisphere about 10,000 years ago, sea levels rose throughout the world, in this case raising the ocean to just the right level for sediments in the Saugus River to be trapped in Rumney Marsh.

Learn more about the Rumney Marsh and its ecological importance from the Rumney Marsh Reservation page and from the page that identifies the marsh as an Area of Critical Environmental Concern (ACEC). The Rumney Marsh is a good place to see the influence (no pun intended) of tides.

Source: 1891 Sanborn Map

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