and Massachusetts Bay
Water Resources Authority
Environmental Monitoring Data
from Boston Harbor & Tributary Rivers
Boston Harbor is an estuary--a marine ecosytem where fresh water from the rivers enters the ocean. Since 1989, the Massachusetts Water Resources Authority (MWRA) has measured bacteria, algae, water clarity, dissolved oxygen, nutrients, and suspended solids at more than 70 locations in the Harbor and the Charles, Neponset, and Mystic rivers.
Boston Harbor and River Monitoring Data
Beach Fact Sheets and Monitoring Data
Water quality at Wollaston, Carson, Constitution,
Tenean and Pleasure Bay beaches is tested by the Department of Conservation
and Recreation (DCR) with assistance from the Massachusetts Water Resources Authority. For more information and other beach water quality links, visit MWRA's Boston Harbor Beaches page.
Technical Report List
including Boston Harbor water quality update (2017)
Harbor and Bay Literature List
Historical Beach Data
Wastewater input reductions reverse historic hypereutrophication of Boston Harbor, USA. (NIH)
Non-linear responses of a coastal aquatic ecosystem to large decreases in nutrient and organic loadings. (Estuaries and Coasts)