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Important for you to know:

  • New to WDFN: see current water conditions throughout the state using the new State Pages. Filter by continuous data type and age of data, view latest values, and link to graphing options to explore the data further. To learn more, read our announcement on the Water Data for the Nation blog.

Hydrological Unit: Boston Harbor-Massachusetts Bay

HUC Name
010900011001 Cape Ann-Atlantic Ocean
010900011002 Annisquam River-Gloucester Harbor
010900011003 North River-Massachusetts Bay
010900011004 Normans Woe-Massachusetts Bay
010900011005 Boston Harbor
010900011006 Broad Sound-Massachusetts Bay
010900011007 Nahant Bay-Massachusetts Bay
010900011009 Quincy Bay
010900011010 Strawberry Ledge-Massachusetts Bay
010900011011 Aaron River-Cohasset Harbor
010900011012 Little Harbor-Massachusetts Bay