The New England water resource region is one of 21 major geographic areas, or regions, in the first level of classification used by the United States Geological Survey to divide and sub-divide the United States into successively smaller hydrologic units. These geographic areas contain either the drainage area of a major river, or the combined drainage areas of a series of rivers. The New England region, which is listed with a 2-digit hydrologic unit code (HUC) of 01, has an approximate size of , and consists of 11 sub-regions, which are listed with the 4-digit HUCs 0101 through 0111.
This region includes the drainage within the United States that ultimately discharges into: (a) the Bay of Fundy; (b) the Atlantic Ocean within and between the states of Maine and Connecticut; (c) Long Island Sound north of the New York-Connecticut state line; and (d) the Riviere St. François, a tributary of the Saint Lawrence River. The region includes all of Maine, New Hampshire and Rhode Island, and parts of Connecticut, Massachusetts, New York, and Vermont.
List of water resource subregions Subregion HUC Subregion Name Subregion Description Subregion Location Subregion Size Subregion Map 0101 St. John subregion The St. John River Basin within the United States. Located in Maine. 0102 Penobscot subregion The Penobscot River Basin. Located in Maine. 0103 Kennebec subregion The Kennebec River Basin, including part of Merrymeeting Bay. Located in Maine. 0104 Androscoggin subregion The Androscoggin River Basin, including part of Merrymeeting Bay. Located in Maine and New Hampshire. 0105 Maine Coastal subregion The coastal drainage and associated waters from the Maine-New Brunswick international boundary to Cape Small, Maine, including the St. Croix River Basin within the United States. Located in Maine. 0106 Saco subregion The coastal drainage and associated waters from Cape Small, Maine to the Merrimack River Basin boundary. Located in Maine, New Hampshire, and Massachusetts. 0107 Merrimack subregion The Merrimack River Basin. Located in Massachusetts and New Hampshire. 0108 Connecticut subregion The Connecticut River Basin. Located in Connecticut, Massachusetts, New Hampshire, and Vermont. 0109 Massachusetts-Rhode Island Coastal subregion The coastal drainage and associated waters from the Merrimack River Basin boundary to and including the Pawcatuck River Basin. Located in Connecticut, Massachusetts, and Rhode Island. 0110 Connecticut Coastal subregion The coastal drainage into Long Island Sound from the Pawcatuck River Basin boundary to and including the Byram River Basin, excluding the Connecticut River Basin, and including Long Island Sound north of the New York-Connecticut state line. Located in Connecticut, Massachusetts, New York, and Rhode Island. 0111 St. Francois subregion The Riviere St. Francois Basin within the United States. Located in Vermont.
See also List of rivers of the United States Water resource region
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