The Department of Marine Resources utilizes ArcGIS Online to provide spatial and tabular data to the public. A number of web applications are also available for interacting with department datasets.
A guide for using the maps is available here (PDF file, 5 pages, 905 kb).
For help with map functionality, please contact GIS Coordinator, Bill DeVoe.
For information on the Lobster Management Area Map, contact Lorraine Morris.
For information on the Scallop Management Area Map, contact Melissa Smith.
For information on the Aquaculture Map, contact Amanda Ellis.
Maine DMR Open Data site
Use the Maine DMR Open Data site to search for, review and, download digital datasets or use the list below to access the web maps or datasets directly. Layer files linking directly to DMR datasets for use by ESRI ArcGIS clients can be downloaded from the Maine DMR GIS Layer Files group.
Interactive Maps
- Maine DMR Historical Eelgrass Coverage Viewer - Past eelgrass surveys and change analysis.
- Maine Coastal Program Funded Shore and Harbor Planning Grant Locations - Locations of awarded Shore and Harbor Planning Grants from FY2011 to FY2023. Additional information is also shared about the year, project title, and project outcomes. The Shore and Harbor Planning Grants are administered by the Maine Coastal Program at the Maine Department of Marine Resources.
- Passive Acoustic Monitoring (PAM) Site Locations - Locations of passive acoustic monitors used to survey North Atlantic right whales
- 10 Arc-Minute Reporting Areas - 10-arc Minute Areas for Maine lobster fishermen.
- BBH Pier Portal
- Cobscook Bay Rockweed Management Areas - Rockweed sectors and conserved lands within the Cobscook Bay Rockweed Management Area.
- Lobster Management Areas - Lobster zone lines and trawl regulations.
- Scallop Closures Map - Current scallop closures in Maine.
- Seafood Dealer Map - Opt-in map displaying seafood dealers in Maine.
- Seaweed Harvester Reporting Sector Map - Seaweed harvester reporting sectors in Maine.
- Spring 2025 Maine/New Hampshire Inshore Trawl Survey Tow Locations - Tow locations for spring 2025 trawl survey
- DMR Aquaculture Map - Permitted aquaculture leases or license sites
Dashboards and Data Viewers
- Landings Portal - An interactive application for displaying and downloading Maine landings data.
- Maine-New Hampshire Inshore Trawl Survey Portal - Viewer displaying trawl survey data and analyses, including option to download data.
Spatial Datasets
Aquaculture
- Aquaculture - AQ Leases - Locations of aquaculture leases in Maine.
- Aquaculture - Lease Applications Under Review - New aquaculture leases that have been deemed complete by MaineDMR.
- Aquaculture - Limited Purpose Aquaculture Sites - Locations of limited purpose aquaculture licenses in Maine.
- Aquaculture - LPA Health Zones - Aquaculture LPA Health Zones.
Lobster
- Lobster Conservation Areas - Lobster Conservation Areas
- Lobster Management - ALWTRP Trawl Minimums - Maine ALWTRP Trawl Minimums Effective May 1, 2022
- Lobster Trawl Maximums - Lobster Trawl Maximums
- Lobster Management - LMA1 Restricted Area - Closed to lobster/Jonah crab trap/pot persistent (traditional) buoy lines from October 1 to January 31.
- Lobster Management - Lobster Zone Lines - Maine DMR Lobster Zones represented as lines.
- Lobster Management - Maine Exemption Line - Exemption line from Chapter 75 of DMR rulemaking
- Lobster Management - Maine Exemption Line Points - Points representing the Maine Exemption Line from Chapter 75 of DMR rulemaking
- Lobster Management - Maine Six Mile Line - Maine Six Mile line from Chapter 75 of DMR rulemaking.
- Lobster Management - Maine Six Mile Line Points - Points representing the Maine Six Mile Line from Chapter 75 of DMR rulemaking.
Eel Grass
- Eelgrass 2010 - Coast-wide eelgrass surveys completed by DMR.
- Eelgrass 1997 - Coast-wide eelgrass surveys completed by DMR.
- Eelgrass Distribution Change 1997/2010 - This layer represents changes in coastwide eelgrass distribution for the State of Maine from surveys conducted 1992-1997 and 2001-2010. Changes in both eelgrass distribution and density are shown.
Maine Coastal Zone
Public Health
- Public Health - 2013 P90 Scores - 90th percentile of bacterial score distribution for active water quality stations based on last 30 samples inclusive to December 31, 2013.
- Public Health - 2014 P90 Scores - 90th percentile of bacterial score distribution for active water quality stations based on last 30 samples inclusive to December 31, 2014.
- Public Health - 2015 NSSP Classifications - Display of the National Shellfish Sanitation Program (NSSP) Classification of shellfish growing areas within the State of Maine for 2015.
- Public Health - 2015 P90 Scores - 90th percentile of bacterial score distribution for active water quality stations based on last 30 samples inclusive to December 31, 2015.
- Public Health - 2016 NSSP Classifications - Display of the National Shellfish Sanitation Program (NSSP) Classification of shellfish growing areas within the State of Maine for 2016.
- Public Health - 2016 P90 Scores - 90th percentile of bacterial score distribution for active water quality stations based on last 30 samples inclusive to December 31, 2016.
- Public Health - 2017 NSSP Classifications - National Shellfish Sanitation Program (NSSP) Classification of shellfish growing areas within the State of Maine as of December 31, 2017.
- Public Health - 2017 P90 Scores - 90th percentile of bacterial score distribution for active water quality stations based on last 30 samples inclusive to December 31, 2017.
- Public Health - 2018 NSSP Classifications - National Shellfish Sanitation Program (NSSP) Classification of shellfish growing areas within the State of Maine as of December 31, 2018.
- Public Health - 2018 P90 Scores - 90th percentile of bacterial score distribution for active water quality stations based on last 30 samples inclusive to December 31, 2018.
- Public Health - 2019 NSSP Classifications - National Shellfish Sanitation Program (NSSP) Classification of shellfish growing areas within the State of Maine as of December 31, 2019.
- Public Health - 2019 P90 Scores - 90th percentile of bacterial score distribution for active water quality stations based on last 30 samples inclusive to December 31, 2019.
- Public Health - 2020 NSSP Classifications - National Shellfish Sanitation Program (NSSP) Classification of shellfish growing areas in the State of Maine as of December 31, 2020.
- Public Health - 2020 P90 Scores - Geometric 90th percentile of fecal coliform bacterial score distribution for active DMR Public Health water quality stations based on last 30 samples inclusive to December 31, 2020.
- Public Health - 2021 NSSP Classifications - National Shellfish Sanitation Program (NSSP) classification of shellfish growing areas in the State of Maine as of December 31, 2021.
- Public Health - 2021 P90 Scores - Geometric mean and 90th percentile of fecal coliform bacterial score distribution for active water quality stations based on last 30 samples inclusive to December 31, 2021.
- Public Health - 2022 NSSP Classifications - National Shellfish Sanitation Program classification of shellfish growing areas in the State of Maine as of December 31, 2022.
- Public Health - 2023 NSSP Classifications - National Shellfish Sanitation Program classification of Maine shellfish growing areas as of December 31, 2023.
- Public Health - 2023 P90 Scores - Geometric mean and 90th percentile of fecal coliform bacterial monitoring data for active and investigative water quality stations based on last 30 samples inclusive to December 31, 2023.
- Public Health - 2024 NSSP Classifications - National Shellfish Sanitation Program classification of Maine shellfish growing areas as of December 31, 2024.
- Public Health - P90 Scores 2024 - Geometric mean and 90th percentile of fecal coliform bacterial monitoring data for active and investigative water quality stations based on last 30 samples inclusive to December 31, 2024.
- Public Health - Seed Mussel Conservation Areas - Locations where collection of mussel seed is regulated in accordance with Section 12.06.
- Public Health - Shellfish Growing Area Boundaries - State of Maine Shellfish Growing Area boundaries.
- Public Health - Wet Storage Sites - Locations of permitted wet storage sites for shellstock in Maine.
Other Data Sets
- Maine 3NM Line - Maine 3NM line
- Inshore Trawl Survey Grid - Grid used by the Maine-New Hampshire Inshore Trawl Survey.
- Passive Acoustic Monitoring (PAM) Site Locations - These polygons represent the approximation locations of DMR Passive Acoustic Monitoring stations, within 500m diameter area.
- 10 Arc-Minute N-Code Grid - This grid represents 10 minute squares used for reporting landings within the Gulf of Maine.
- Cobscook Rockweed Sectors - MaineDMR Cobscook Bay Rockweed Management area sectors.
- Elver Harvest Locations 2011 - Location of streams and rivers where elver harvest activities have been observed. These locations are passage ways for the catadromous species, Anguilla rostrata
- Herring Weirs 2010 - Weir2010 provides point locations for herring weirs based on near low water ortho imagery.
- Marine Worms 2005 - Data on the locations of marine worm populations.
- Molluscan Shellfish 2010 - Distributions of molluscan shellfish species in Maine as determined by Maine DMR in 2010.
- Sea Run Fisheries - Current and Potential Alewife Spawning Habitat - Current and potential alewife spawning habitat in Maine
- Sea Run Fisheries - Diadromous Fish Runs 1990 - Locations of streams and rivers in Maine with runs and passages of anadromous and catadromous fish.
- Seaweed Harvester Reporting Sectors - Feature service representing seaweed harvester reporting sectors for the State of Maine.
Tabular Datasets
- Boothbay Harbor Sea Surface Temperatures - Data from DMR's Boothbay Harbor Environmental Data station, 1905-present.
- Public Health - Shellfish Water Quality Data - Fecal coliform bacterial monitoring data for active and investigative Maine DMR water quality monitoring stations from the current year and previous five years.