21E Priority Resource Maps

Displays environmental data suitable for a Massachusetts Contingency Plan site assessment.

Datalayers include Potentially Productive Aquifers, Non-potential Drinking Water Source Areas (shown by high and medium yield), Sole Source Aquifers, Zone IIs, Interim Wellhead Protection Areas, Wetlands, Protected Open Space, Areas of Critical Environmental Concern, DEP Permitted Solid Waste Facilities, NHESP Habitats and Certified Vernal Pools.

MassGIS Web site

Eelgrass Maps

MassDEP Eelgrass is a sensitive indicator of nitrogen loadings and an ideal habitat to monitor overall ecosystem health. The eelgrass layer, produced from data collected in 2001, is the second statewide mapping of the eelgrass resources along the coast.

Web page

Estuaries Project Map

Massachusetts Estuaries Project Map & List of Targeted Estuaries
Web page

Massachusetts Ecological Integrity Maps and MassDEP Important Habitat Maps

These maps are provided to assist both conservation commissions and applicants for activities subject to the Wetlands Protection Act in identifying areas with important wildlife habitat.

Web page

My Community Maps

Maps of selected natural resources by community.

Web page

Title 5 Setback Area Maps

Title 5 regulations prohibit the placement of septic systems immediately adjacent to certain resources. These maps display general setback areas from mapped resources; the exact extent of these areas need to be determined on the ground. Zoom into your area of interest to display all the data.

MassGIS Web site

USGS Topographic Quadrangle Index Map

This map displays regional and town information to be used in conjunction with the Hydrogeological Matrix for the Drinking Water program.

Web page

Wetlands Change Maps

The MassDEP Wetlands Change Data Layer is a change analysis of the 1:12,000 data layer using more recent 2001 and 2005 imagery from the MassGIS Orthophotoquad mapping program. Each item in the data layer has a three element unique identifying code which indicates year of detection (WC1=2001, WC2=2005), the unique number town code, and the number of the change item during that detection year. Web site | For a complete description of the methods of this data layer - Web site

The following database describes Wetlands Change polygons for communities that have been shown to have altered wetlands polygons. Towns are listed alphabetically with the polygon number, type of wetland, what the wetland alteration was, acreage and square footage of the alteration. MS Excel 717 KB

Wetlands Mouth of Coastal River Maps

These maps identify the Mouth Of The River (MOR) for coastal rivers in order to provide a clear, consistent, and predictable means of locating all river mouths in the Commonwealth.

Web page

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KML files (KMZ is the compressed form) are used by a variety of open-source GIS and mapping applications, such as Google Earth and the NASA World Wind viewer. Users must have such an application installed on their computer to use these files.

Activity and Use Limitations ("AULs") Sites in MA

This map provides approximate location information of oil and hazardous waste disposal sites closed with AULs in Massachusetts and only includes those sites for which MassDEP has sufficient location information to map, as of the date specified. The file does not include those sites without sufficient location data or those sites added to the database after the date specified. (The searchable sites database includes these sites and is updated weekly.) An overview of the datalayer, including data limitations, is available from MassGIS.

Questions or corrections of the data in this file may be directed to BWSC.Information@state.ma.us. Please be sure to include the site RTN, coordinates and details about the nature of the correction needed.

August 2008
KMZ file 135 KB

Brownfield Success Stories

This map provides approximate locations for featured sites that have been successfully redevloped through the MassDEP Brownfields Program. Each location includes a brief synopsis of the cleanup/development and many have links to video clips describing the site's redevelopment.

Questions or corrections of the data in this file may be directed to the MassDEP Brownfields Coordinator at Catherine.Finneran@state.ma.us.

January 26, 2007
KMZ file 87 KB

Coastal Wetlands Resources Maps

These maps are provided as an aid to conservation commissions, building inspectors, and others in implementing revisions to the Massachusetts Basic Building Code 780 CMR 120.G, Appendix G, effective January 1, 2008. These maps identify the approximate location of coastal wetlands resources for coastal communities with properties that must meet Building Code requirements for construction in a flood hazard zone, high hazard zone, or coastal dune. Please note that the delineation of coastal wetland resource areas is still determined by the issuing authority (conservation commission or MassDEP) pursuant to 310 CMR 10.00, the Wetlands Protection Act regulations.

June 2008
KMZ file 5 MB

MassDEP Office Locations

This map provides location information for MassDEP Offices with links to office web pages.

Questions about this file may be directed to dep.www@state.ma.us.

KMZ file 36 KB

Municipal Waste Combustors in Massachussetts

This map provides approximate location information for the seven municipal waste combustors in the state and also onward links to more information on how these facilitiesfit into the state's waste management system, how they operate and are regulated, and the progress they are making toward reducing their emissions of targeted air pollutants.

Questions about this file may be directed to dep.www@state.ma.us.

KMZ file 69 KB

NPL (Superfund) Sites in MA

This map provides approximate location infomation of the 35 National Priorities List ("NPL") sites in Massachusetts. MassDEP works closely with the U.S. Environmental Protection Agency's Superfund Program to assess and remediate NPL (or "Superfund") sites. A description of the Federal Superfund Program is available on the USEPA website.

Questions or corrections of the data in this file may be directed to BWSC.Information@state.ma.us. Please be sure to include the site RTN, coordinates and details about the nature of the correction needed.

January 12, 2007
KMZ file 72 KB

Oil Spill Emergency Response Trailer Locations

This map provides location information for Oil Spill Emergency Response Equipment Trailers. It includes links to lists of generic equipment inventories.

Questions or corrections of the data in this file may be directed to BWSC.Information@state.ma.us.

KMZ file 15 KB

RCRA Corrective Action Sites

In proposed regulations available for public comment through March 23, 2007, MassDEP seeks corrective action authority for twenty-seven (27) known Massachusetts facilities subject to RCRA Corrective Action under 40 CFR 264.101. In Massachusetts the RCRA universe consists of fourteen (14) active hazardous waste Treatment and Storage Facilities (TSFs) and thirteen (13) inactive Storage/Land Disposal Facilities (LDFs) that received Interim Status in 1980, but ceased hazardous waste operations before being issued a final license.

This map identifies the facilities and approximate loactions of the 27 locations subject to the proposed rules. Questions or corrections of the data in this file may be directed to Jeffrey Chormann (Jeffrey.Chormann@state.ma.us) in the MassDEP Bureau of Waste Prevention. Please be sure to include the site name, coordinates and details about the nature of the correction needed.

March 2, 2007
KMZ file 81 KB

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Massachusetts Geographic Information System (MassGIS)

Additional mapping/GIS resources may be found at the MassGIS Web site.

MassGIS Web site

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