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Important for you to know:

  • New to WDFN: customize and keep track of your list of favorite monitoring locations and data types using the new My Favorites page. To learn more, read our announcement on our Water Data for the Nation blog.

Hydrological Unit: Southern Long Island

HUC Name
0203020202 South Oyster Bay-Jones Inlet
0203020203 Carmans River-Great South Bay
0203020204 Great South Bay-Fire Island Inlet
0203020205 Peconic River
0203020206 Shinnecock Bay-Atlantic Ocean
0203020207 Shelter Island Sound-Gardiners Bay
0203020208 Napeague Bay-Block Island Sound
0203020209 Long Island-Atlantic Ocean
Monitoring Locations