National Hydrography Dataset (NHD) updates since March, 2020
30 Deleted
HUC8 ID Subbasin Name
04090005 Huron
04150101 Black
04150102 Chaumont-Perch
04150200 Lake Ontario
04150302 Oswegatchie
04150303 Indian
04150304 Grass
04150305 Raquette
04150306 St. Regis
04150307 Salmon
04150308 Chateaugay-English
04150309 Headwaters St. Lawrence River
04150310 Raisin River-St. Lawrence River
04150401 Mettawee River
04150402 Otter Creek
04150403 Winooski River
04150404 Ausable River
04150405 Lamoille River
04150406 Saranac River
04150407 Missiquoi River
04150408 Lake Champlain
04150409 Richelieu River
04150500 St. Francois River
04150600 Chaudiere River
04250006 Upper Grand River
04250007 Lower Grand River
10150001 Ponca
21010006 Puerto Rican Islands
22020000 Saipan
22030000 American Samoa
46 Added
HUC8 ID Subbasin Name
04090006 Upper Thames River
04090007 Lower Thames River
04100013 Huron
04140301 Black
04140302 Chaumont-Perch
04270102 Jordan Harbour-Frontal Lake Ontario
04270103 Sixteen Mile Creek-Frontal Lake Ontario
04270104 Humber River-Frontal Lake Ontario
04270105 Ganaraska River-Frontal Lake Ontario
04270106 Moira River-Frontal Lake Ontario
04270107 Napanee River-Frontal Lake Ontario
04270201 Scugog River
04270202 Gull River
04270203 Kawartha Lakes
04270204 Otonabee River
04270205 Trent River
04280001 Prince Edward County-Frontal Lake Ontar
04280002 Lake Ontario
04290001 Headwaters St. Lawrence River
04290002 Indian
04290003 Oswegatchie
04290004 Grass
04290005 Raquette
04290006 St. Regis
04290007 Salmon
04290008 Raisin River-St. Lawrence River
04300101 Mettawee River
04300102 Otter Creek
04300103 Winooski River
04300104 Ausable River
04300105 Lamoille River
04300106 Saranac River
04300107 Missiquoi River
04300108 Lake Champlain
04300109 Richelieu River
04300201 Chateaugay-English
04300202 St. Francois River
04310001 Chaudiere River
10170104 Ponca
13100000 Rio Conchos
21010007 Puerto Rican Western Islands
21010008 Puerto Rican Eastern Islands
22020101 Saipan Island
22030001 Tutuila Island
22030002 Ofu Island-Olosega Island
22030003 Ta'u Island