Mass Water Testing Somerville Waterways 

By Frank Santangelo 

A MWRA vessel was visibly noticeable early Wednesday morning at the Somerville side of the Amelia Earhart Dam checking out the water conditions at the locks. 
The Amelia Earhart Dam is an earth-fill dam spanning the Mystic River near its mouth between Somerville and Everett. 
It was built in 1966 to regulate tidal effects and the incursion of salt water in the upstream river basin.

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