Maine Watershed Boundary Dataset Coastal DelineationsCoastal Delineations International Border HarmonizationInternational Border Harmonization

New Hampshire Quebec, CA New Brunswick, CA Atlantic Ocean

– Coastal Washington & Hancock Counties, Maine 1 st Iteration (early to mid-90s) of WBD stopped at land’s edge, Islands > 10,000 acres coded Marine waters and small islands ignored

Ragged Coastline = Edge Habitat Diversity Terrestrial Fresh Aquatic Ocean Aquatic Intertidal

Habitat Diversity Shellfish beds

Habitat Diversity Shellfish beds ESA-listed animals

Habitat Diversity Shellfish beds ESA-listed animals Bald Eagle nests

Habitat Diversity Shellfish beds ESA-listed animals Bald Eagle nests Deer Wintering Areas

Habitat Diversity Shellfish beds ESA-listed animals Bald Eagle nests Deer Wintering Areas Tidal Waterfowl

Habitat Diversity Shellfish beds ESA-listed animals Bald Eagle nests Deer Wintering Areas Tidal Waterfowl Shorebirds, SNI

Habitat Diversity Shellfish beds ESA-listed animals Bald Eagle nests Deer Wintering Areas Tidal Waterfowl Shorebirds, SNI Shellfish, Eelgrass Beds

Blue Hill-Mt. Desert Frontal Drainages Frenchman’s Bay

ESA-listed Atlantic Salmon Rivers US Fish & Wildlife Service Atlantic Salmon Commission Shortnosed Sturgeon NOAA Coastal Fisheries

Conservation Partners that the WBD Brings to the Table Maine Dept. of Environmental Protection –Water Quality regulation –305b/303d reporting Maine Dept. of Marine Resources –Shellfish Bed monitoring and closures Maine Inland Fisheries & Wildlife Maine Natural Areas Programs Maine State Planning Office NOAA Coastal Fisheries US Fish & Wildlife Service

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Maine Watershed Boundary Dataset International Border Harmonization

WBD 5 St. John River Sub-basins form the roof of Maine Eastern edge incomplete, doesn’t meet standard NHD Incomplete, stops at Canadian border Quebec New Brunswick

Similar problem on the Canadian side

International Joint CommissionInternational Joint Commission The IJC prevents and resolves disputes between the USA and Canada under the 1909 Boundary Waters Treaty and pursues the common good of both countries as an independent and objective advisor to the two governments. Transboundary Hydrographic Dataset Harmonization Task Force (THDHTF)Transboundary Hydrographic Dataset Harmonization Task Force (THDHTF) –Mike Laitta, of USGS fame, facilitating communication between US and Canada WBD/NHD counterparts. –WebEx –Face-to-face meeting 4/9/2009 between New Brunswick and Maine re: HUC8-CAN4 polygons.

Passamaquoddy Bay- Bay of Fundy St. Croix River

The Devil’s in the details. The Prestile/Meduxnekeag Sub-basin has 2 pourpoints. Two small, previously undefined drainage areas we know drain to the St. John.

US:CA = HUC8:CAN4

The St. John Basin will have 15 sub-basins. New polygons will be the templates for completing the NHD/NHN harmonization. Upper St. John will be split into 4 sub-basins along HUC10 boundaries.