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: Charles

HUC	Name
0109000101	Plum Island Sound
0109000102	Ipswich River
0109000103	Essex River-Frontal Ipswich Bay
0109000104	Saugus River
0109000105	Mystic River
0109000106	Upper Charles River
0109000107	Lower Charles River
0109000108	Neponset River
0109000109	Hingham Bay
0109000110	Boston Harbor-Massachusetts Bay

Monitoring Locations