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Important for you to know:

  • New to WDFN: daily data are now available in WDFN! Visit a Monitoring Location Page and scroll to the "Available data" section to graph daily data types. To learn more, read our announcement on the Water Data for the Nation blog.

Hydrological Unit: Penobscot Bay-Frontal Atlantic Ocean

HUC Name
010500021901 Mill Brook
010500021902 Belfast Reservoir Number One-Little River
010500021903 Ducktrap River
010500021904 Megunticook River
010500021905 Hosmer Pond-Goose River
010500021906 Weskeag River-Frontal Muscle Ridge Channel
010500021907 Goose Pond-Frontal Penobscot Bay
010500021908 Islands of Penobscot Bay
010500021909 Penobscot Bay-Atlantic Ocean