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DMR Home > Maps

Coastal Maine Maps, Datasets, and Aerial Photos

Please also visit the Maine Office of GIS Data Catalog for digital datasets and Google Earth applications for Atlantic salmon habitat; Mussel seed conservation areas; Diadromous fish runs; Eelgrass beds; Gulf of Maine habitat analysis; Herring weirs; Seabird nesting islands and Piping Plover, Least Tern, and Roseate Tern essential habitat; Marine worm habitat; Molluscan shellfish areas; Gulf of Maine bathymetry; Coastal bluff hazards, Wetlands and drainage areas; and Lowtide orthophotos.

aerial photo

• Aerial Photography of the Maine Coast

This site has been developed to provide a planning and response tool for Maine and New Hampshire coastal spill responders. The photographs for Maine were from a coast-wide eelgrass mapping project and represent scanned images from 1992 to 1997. Photographs are organized by region.

The 1992 photographs were provided by the Maine Department of Transportation. Photographs for New Hampshire were provided by Public Service of New Hampshire and were acquired by PSNH for use by the response community.

map of aquaculture leases in the Casco Bay area

• Aquaculture Sites - Inventory of all Finfish, Shellfish, Experimental, and Limited Purpose Aquaculture licenses and lease sites on the Maine Coast, updated annually. This page is designed to provide the public, applicants, and leaseholders with useful and accurate information about marine aquaculture in Maine. Maps for sections of the coast can be accessed by selecting the region of interest from a list of areas.

Eelgrass beds in Casco Bay

• Eelgrass Beds - Using aerial photography, Maine's eelgrass beds were mapped between 1992 and 2005.  They form an important marine and estuarine coastal aquatic habitat for the state. Along with other plants, eelgrass forms the base of food production in the sea, provides shelter for juvenile fish and invertebrates, is a site for primary settlement of the larvae of some bivalve mollusks, and in certain locations helps to stabilize unconsolidated sediments and shorelines.


• Fishing Grounds of the Gulf of Maine by Walter H. Rich, 1929 - PDF file, 75 pages, 4 MB
The descriptions and maps of fishing grounds, compiled from earlier works and interviews with fishing boat captains, are still relevant today. PDF files may require Adobe Reader software (download here free).

Lobster management zones


• Lobster Zone Maps - maps of Maine lobster management zones A to G.


• Northeast Fisheries-Specific Charts from NOAA - maps of fisheries management areas and closures


map of lobster zones

• Remote Operated Vehicle (ROV) Groundline Survey - A federal mandate to reduce the number of whale entanglements that involve fishing gear prompted the State of Maine to work closely with its commercial fishing industry to devise gear modifications that reduce the likelihood of entanglement. To determine the State’s response to proposed amendments to the Atlantic Large Whale Take Reduction Plan, the Maine Department of Marine Resources (DMR) investigated the underwater profile properties of groundlines (rope between the traps) used by the Maine inshore lobster industry. Select a survey area for maps showing lobster zones and a list of activities in each zone.

salmon habitat maps


Atlantic Salmon Habitat - metadata, shape files, and a Google Earth application, c/o the Maine Office of GIS

example red tide closures

• Shellfish Closures - visit either the red tide closure inventory or the sanitation closure inventory for detailed maps and descriptions of shellfishing areas currently closed due to red tide or pollution.

Cobscook Bay shellfish resources

Molluscan Shellfish Distribution Datasets, c/o the Maine Office of GIS.  Shapefiles of the distributions of softshell clam (Mya arenaria), blue mussel (Mytilus edulis), European oyster (Ostrea edulis), American oyster (Crassostrea virginica), hard clam - also called quahog (Mercenaria mercenaria), atlantic surf clam (Spisula solidissima), razor clam (Ensis directus) and sea scallop (Placopectin magellanicus) were generated with input from local shellfish harvesters, clam committees, biologists and others in 2009.  For more information, see the Maine Molluscan Shellfish Resource Mapping Project, pdf file, 8 pages, 29 kb.