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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: Oyster Bay-Frontal Long Island Sound

HUC Name
020302010201 Mill Neck Creek-Oyster Bay Harbor
020302010202 Cold Spring Harbor-Frontal Long Island Sound
020302010203 Lloyd Harbor-Frontal Huntington Bay
020302010204 Northport Bay-Frontal Huntington Bay