GIS Maps and Other Data Files

To use the data in Google Earth format, it is recommended that you have Google Earth Pro installed.  For help using Google Earth go to the Google Earth Help Center.

 Download Key: Google Earth: The Google Earth Globe logo   ArcGIS Online Experience Builder or Instant App: The ESRI Experience Builder logo   Text File: The text file logo   Shapefile or Layer Package: The ESRI shapefile logo   PDF File: The Adobe PDF logo   Web Page: A light blue globe logo representing a link to web page  

 GIS Open Data: Access to Shapefile, CSV text file, and KML downloads (including rest service links): A GIS logo representing a link to GIS Open Data web site Related GIS Table download: An image representing a table which links to GIS Open Data web site

The Bureau of Remediation and Waste Management

  • Technical Services Spill Projects (Data Refreshed Daily)   The ESRI Experience Builder logo linking to the Technical Services Spill Projects Web Map
  • Hazardous Oil Spill System (HOSS) Sites (Data Refreshed Every Saturday Night)   The ESRI Experience Builder logo linking to the Hazardous Oil Spill System (HOSS) Sites Web Map

    DISCLAIMER: The HOSS sites dataset does not contain the locations of all spills recorded by the Maine DEP.

  • Oil Spill Geographic Response Strategies - Marine (11/17/2020)   The Google Earth Globe logo linking to the marine oil spill response strategies map data.
  • Registered Petroleum Tanks Database (Map Data Refreshed Daily)   The ESRI Experience Builder logo linking to the Registered Petroleum Tanks Web Map   (Text File Updated Monthly): Text File Logo

Registered Tank Spatial Data (Data Updated Nightly)   The ESRI shapefile logo linking to the ESRI Open Data Hub for registered tanks spatial point data.

Registered Tanks Chamber Data (Data Updated Nightly)  An image representing a table which links to the ESRI Open Data Hub for registered tanks chamber data

NOTE: The Registered Petroleum Tanks Google Earth version is now available for download from the ESRI Open Data Hub. The Hub site can be accessed via the links above for the tank spatial and chamber data.

  • Remediation Sites (Institutional Controls) Database (Data Refreshed Every Saturday Night)   The ESRI Experience Builder logo linking to the Remediation Sites Web Map   The ESRI shapefile logo linking to the ESRI Open Data Hub for remediation spatial point data

NOTE: The Remediation Sites Google Earth version is now available for download from the ESRI Open Data Hub. The Hub site can be accessed via the Remediation Sites GIS link above.

Bureau of Remediation and Waste Management program contacts..

The Bureaus of Land Resources and Water Quality

  • Aquatic Invasive Plant Locations (Updated Annually)   The ESRI Experience Builder logo linking to the Aquatic Invasive Plant Location Web Map 
  • Aquifer Quantitative Use Assessment (AQUA) Index (11/17/2009)   The Google Earth Globe Logo
  • Bacteria Monitoring Survey (Including Stream TMDL, Volunteer River Monitoring and links to the Maine Healthy Beaches data)(Under Construction-Back Soon!)  
  • Biomonitoring Stream and Wetland Sampling Data (2/5/2026)   The ESRI Experience Builder logo linking to the Biomonitoring Stream and Wetland Sampling Web Map
  • Head of Tide Locations (7/16/2019)   The ESRI Experience Builder logo linking to the Head of Tide Web Map   The ESRI shapefile logo linking to the ESRI Open Data Hub for head of tide spatial point data
  • Integrated Report Segments - 2024 (Draft) and 2018/2020/2022 (Final):   The ESRI Experience Builder logo linking to the Intergrated Report Segments Instant App Web Map

2024 Draft IR KMZ (This KMZ might take a minute or more to initially download due to its large size.):   The Google Earth Globe Logo

2024 Draft Integrated Report ArcGIS Map Package (NOTE: Must have a licensed copy of ArcGIS Pro software installed to use this link.)   The ESRI shapefile logo

2018/2020/2022 IR ArcGIS Map Package (NOTE: Must have a licensed copy of ArcGIS Pro software installed to use this link.)   The ESRI shapefile logo

Low Tide Orthoimagery

Casco Bay 2013 The Camera Icon link to the download site for the Casco Bay 2013 ortho imagery

Casco Bay 2018 The Camera Icon link to the download site for the Casco Bay 2018 ortho imagery

South Coast 2021 (Elliot to Cape Elizabeth) The Camera Icon link to the download site for the South Coast 2021 ortho imagery

Casco Bay 2022 The Camera Icon link to the download site for the Casco Bay 2022 ortho imagery

Mid-Coast 2023 The Camera Icon link to the download site for the Mid Coast 2023 ortho imagery

Penobscot Bay 2024 The Camera Icon link to the download site for the Penobscot Bay 2024 ortho imagery

Acadia 2025 The Camera Icon link to the download site for the Acadia 2025 ortho imagery

  • Maine Dams, Levees, Impoundments & Barriers   The ESRI Experience Builder logo linking to the Maine Dams, Levees, Impoundments and Barriers Web Map
  • Maine Beach Status can be viewed on the   Maine Healthy Beaches Portal page.
  • Maine Lake Information (Moving to ESRI Web Services - Returning Soon)
  • Maine Boat Pumpout Stations and No Discharge Areas (8/30/2021)   The ESRI Experience Builder logo linking to the Maine Boat Pumpout Stations and No Discharge Areas Web Map
  • Mining Sites (2/09/2024)   The ESRI Experience Builder logo linking to the DEP regulated Mining Sites Web Map   The ESRI Shapefile Logo linking to the ESRI Open Data Hub for the mining spatial data   The Google Earth Globe Icon
  • Municipal Separate Stormwater Sewer Systems Regulated Areas (5/27/2014)   The Google Earth Globe Icon   The ESRI Shapefile Logo
  • NLCD Impervious Surface Change Tool for Stormwater Management   The ESRI Experience Builder logo linking to the NLCD Impervious Surface Change Tool for Stormwater Management Web Map

NRPA Habitat Data (NRPA datasets are produced and maintained by Maine IF&W)

NRPA datasets can be viewed on the Beginning with Habitat Map Viewers page.

You can learn more about the beginning with habitat program on the It all Begins with Habitat page.

Please contact Maine IF&W with any questions regarding NRPA Habitat layers and map viewers.

  • Overboard Discharges (12/16/2024)   The Google Earth Globe Icon   The Text File Icon
  • Permit by Rule and Land Licensing Sites can now be viewed on the   Maine DEP MELS Map Explorer page.
  • Renewable Energy Compensation Large Undeveloped Habitat Blocks   The ESRI Experience Builder logo linking to the Renewable Energy Compensation Large Undeveloped Habitat Blocks
  • Seagrass Data Viewer   The ESRI Experience Builder logo linking to the Seagrass Web Map Viewer

Seagrass (Polygons Only)

Casco Bay 2013 The ESRI Shapefile Logo linking to the ESRI Open Data Hub for the Casco Bay 2013 polygons data

Casco Bay 2018 The ESRI Shapefile Logo linking to the ESRI Open Data Hub for the Casco Bay 2018 polygons data

South Coast 2021 - Elliot to Cape Elizabeth The ESRI Shapefile Logo linking to the ESRI Open Data Hub for the South Coast 2021 polygons data

Casco Bay 2022 The ESRI Shapefile Logo linking to the ESRI Open Data Hub for the Casco Bay 2022 polygons data

Mid-Coast 2023 The ESRI Shapefile Logo linking to the ESRI Open Data Hub for the Mid-Coast 2023 polygons data

Penobscot Bay 2024 The ESRI Shapefile Logo linking to the ESRI Open Data Hub for the Penobscot Bay 2024 polygons data

Acadia 2025 The ESRI Shapefile Logo linking to the ESRI Open Data Hub for the CAcadia 2025 polygons data

Seagrass Change Anaylsis The ESRI Shapefile Logo linking to the Seagrass change anaylsis web mapper

  • Site Location of Development and Stormwater Law Permits: 2006 to present (12/21/2022)   The Google Earth Globe Logo   The Notepad Logo
  • Stormwater Discharges from Regulated Industrial Activities   The ESRI Experience Builder logo linking to the Stormwater Discharges from Regulated Industrial Activities Web Map  
  • Urban Impaired Streams Watersheds (9/26/2023)   The ESRI Experience Builder logo linking to the Urban Impaired Streams Watershed Web Map
    •  
  • Wastewater Licensed Dischargers and Critical Salmon Habitat (12/9/2011)

Androscoggin Rivershed   The Adobe PDF logo

Kennebec Rivershed   The Adobe PDF logo

Penobscot Rivershed   The Adobe PDF logo

  • Wastewater Facilities and Outfalls (MEPDES) (12/19/2025)   The ESRI Experience Builder logo linking to the Wastewater Facilities and Outfalls, Including CSO's   Facilities: The ESRI Shapefile Logo   Outfalls: The ESRI Shapefile Logo
    Note: Maine DEP plans to update this data twice per year. Updates should occur during January and July. Please refer to this page for the exact date.  
  • Combined Sewer Overflows - CSO's (1/02/2024)   CSO: The ESRI Shapefile Logo
    Note: This data is updated infrequently. Please refer to this page for the exact date.
  • Waterbody Statutory Classification   The ESRI Experience Builder logo linking to the Waterbody Statutory Clasification Web Map   The ESRI Shapefile Logo
  • Waterbody Statutory Classification History 1965 - 2019 (Map Only): The ESRI Experience Builder logo linking to the Waterbody Statutory Classification History for the years 1965 to 2019  

Bureau of Land Resources program contacts..

Bureau of Water Quality program contacts..

The Bureau of Air Quality

Bureau of Air Quality program contacts..

All Bureaus

Environmental and Geographic Analysis Database (EGAD)

  • Site Types (Threats to Groundwater and Environmental Monitoring) (Data Refreshed Daily)   The ESRI Experience Builder logo linking to the EGAD Site Types Web Map   The ESRI shapefile logo

    NOTE: The EGAD Site Types Google Earth version is no longer available or supported. Please use the ArcGIS Online version above.

  • Sample Locations   The ESRI Experience Builder logo linking to the EGAD sample location Web Map
  • To request data, please fill out our Request EGAD Data Form.

Other Data

  • Regulated Sites Flood Risk   The ESRI Experience Builder logo linking to the Regulated Sites Flood Risk Web Map

 

Downloading Data:  When downloadable data is available for GIS Users there are three options:
    Option 1:  Use the raw data file alternate links above to download a shapefile or text file.
    Option 2:  Click on the project or layer links in the Google Earth table of contents (Places window).  In the balloon, there will be a link to a text file with attribute data and spatial coordinates that can be imported into most GIS systems.
    Option 3:  Use the GIS download link The ESRI shapefile logo to take you the ArcGIS Hub or Maine GeoLibrary open data site(s) and look for the download option to the right of the title.

Feedback:  If you would like to comment on the use of Google Earth, ArcGIS Online, provide suggestions for improving the functionality, or report problems please go to our Feedback Form.

Disclaimers: 

-  The Maine DEP is only providing the data to be used in the Google Earth application on the user's computer.  We are not responsible for installing or maintaining this software product.
-  The Google Earth imagery dates provided do not necessarily represent the date the image was captured but show the date the imagery was processed and deployed.
-  ArcGIS Online Web maps open within a separate tab on your web browser.  Maine DEP GIS Unit recommends using the Chrome Web browser to view ArcGIS Online Web Maps.
-  For questions regarding data content or data accuracy please contact the staff in the responsible programs using the contact links in each bureau section above. 
-  This data is for visual representation only and may not contain all data that is available by contacting the DEP directly.
-  The individual DEP Google Earth Map projects and ArcGIS Online Web Maps contain a number of statewide data layers.  These layers can be obtained from the Maine GeoLibrary Data Catalog web page.
-  If you need to make detailed decisions using geospatial data please obtain original copies of the data.


GIS Data Distribution

MEDEP staff generate and utilize a large amount of GIS data.  Non-MEDEP GIS data are typically distributed by the Maine GeoLibrary.

If you can't find the data you are interested in contact the Maine DEP GIS Unit.