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1. Protected & Recreational OpenSpace (Arcs) [MassGIS_GISDATA.OPENSPACE_ARC]
The MassGIS Protected and Recreational OpenSpace data comprise a set of related data layers that represent parklands, forests, golf courses, playgrounds, wildlife sanctuaries, conservation lands, ...


2. DEP 2002 Integrated List of Waters (305(b)/303(d)) (Arcs) [MassGIS_GISDATA.WBS2002_ARC]
Under Massachusetts General Law (MGL) chapter 21 DEP is responsible for monitoring the waters of the Commonwealth, identifying those waters that are impaired, and developing a plan to bring them back ...


3. DEP 2002 Integrated List of Waters (305(b)/303(d)) (Polygons) [MassGIS_GISDATA.WBS2002_POLY]
Under Massachusetts General Law (MGL) chapter 21 DEP is responsible for monitoring the waters of the Commonwealth, identifying those waters that are impaired, and developing a plan to bring them back ...


4. DEP Public Water Supplies [MassGIS_GISDATA.PWSDEP_PT]
The Public Water Supply (PWS) datalayer contains the locations of public community surface and groundwater supply sources and public non-community supply sources as defined in 310 CMR 22.00. The public ...


5. Major Basins (Polygons) [MassGIS_GISDATA.MAJBAS_POLY]
MassGIS has produced a statewide digital datalayer of the 28 major drainage basins of Massachusetts as defined by the USGS Water Resources Division and the MA Water Resources Commission. The polygon ...


6. NHESP Natural Communities [MassGIS_GISDATA.NATCOMM_POLY]
The NHESP Natural Communities datalayer consists of polygons that represent the extent of various natural communities of biodiversity conservation interest in Massachusetts. These polygons are based ...


7. Non-Potential Drinking Water Source Areas [MassGIS_GISDATA.NPDWSA_POLY]
Non-Potential Drinking Water Source Areas (NPDWSA) are regulatory in nature, representing one of many considerations used in determining the standards to which ground water must be cleaned in the ...


8. NHESP Priority Habitats of Rare Species [MassGIS_GISDATA.PRIHAB_POLY]
The Priority Habitats of Rare Species datalayer contains polygons representing the geographic extent of Habitat of state-listed rare species in Massachusetts based on observations documented within ...


9. 1:5,000 Black and White Digital Orthophoto Images [MassGIS_GISDATA.IMG_BWORTHOS]
These medium resolution images provide a high-quality "basemap" for the Commonwealth by MassGIS and the Executive Office of Environmental Affairs (EOEA). As of March 31, 2000, the entire state is ...


10. 1:5,000 Color Ortho Imagery [MassGIS_GISDATA.IMG_COQ2001]
These medium resolution true color images are considered the new "basemap" for the Commonwealth by MassGIS and the Executive Office of Environmental Affairs (EOEA). MassGIS/EOEA and the Massachusetts ...


11. 1:5,000 Color Ortho Imagery (2005) [MassGIS_GISDATA.IMG_COQ2005]
These medium resolution true color images are considered the new "basemap" for the Commonwealth by MassGIS and the Executive Office of Environmental Affairs (EOEA). The photography for the entire ...


12. 2001 MrSID Mosaics CD-ROM Index [MassGIS_GISDATA.COQHMOSAICSCDS_POLY]
CD-ROM index scheme for the 2001 color ortho image MrSID mosaics.


13. 2001 MrSID Mosaics DVD Index [MassGIS_GISDATA.COQHMOSAICSDVDS_POLY.xm]
DVD index scheme for the 2001 color ortho image MrSID mosaics.


14. 2001 MrSID Mosaics Index [MassGIS_GISDATA.COQHMOSAICS_POLY]
This data layer is used to index the half-meter MrSID mosaics for the 2001/03 1:5,000 Color Ortho Imagery.


15. 2005 MrSID Mosaics CD-ROM Index [MassGIS_GISDATA.COQMOSAICSCDS2005_POLY.]
CD-ROM index scheme for the 2005 color ortho image MrSID mosaics.


16. 2005 MrSID Mosaics DVD Index [MassGIS_GISDATA.COQMOSAICSDVDS2005_POLY]
DVD index scheme for the 2005 color ortho image MrSID mosaics.


17. 2005 MrSID Mosaics Index [MassGIS_GISDATA.COQMOSAICS2005_POLY]
Index scheme for the 2005 color ortho image MrSID mosaics.


18. Annotation - Civic Place Names [MassGIS_GISDATA.GEONAMES_ANNO_PLACES.xm]
This datalayer represents place name annotation for civic features, which may be used for map labels.


19. Annotation - Hypsographic Features [MassGIS_GISDATA.GEONAMES_ANNO_HYPSO]
This datalayer represents annotation for hypsographic features, which may be used for map labels.


20. Bedrock Lithology [MassGIS_GISDATA.BEDROCKLITHOLOGY_POLY]
Lithology is the science of the mineral composition and classification of rocks, and their mode of occurrence in nature. This polygon data layer shows the dominant lithology and geochemical, termed ...


21. Coastal 10k Color Orthophoto Index [MassGIS_GISDATA.COQMAIN_POLY]
This datalayer represents the indexing scheme for the 1:10,000 Coastal Color Orthophotos. The polygons in this index coverage were extracted from the statewide orthophoto index layer (OQMAIN_POLY) ...


22. DEP Eelgrass [MassGIS_GISDATA.EELGRASS_POLY]
Seagrass beds are critical wetlands components of shallow coastal ecosystems throughout the state. Seagrass beds provide food and cover for a great variety of commercially and recreationally important ...


23. Designated Shellfish Growing Areas (Polygons) [MassGIS_GISDATA.DSGA_POLY]
The Designated Shellfish Growing Area (DSGA) datalayer was compiled by the Department of Fisheries, Wildlife and Environmental Law Enforcement's (DFWELE) Division of Marine Fisheries (DMF). Three ...


24. Digital Elevation Model (1:5,000) [MassGIS_GISDATA.IMG_ELEV5K]
This raster layer represents surface elevation for Massachusetts. It was created from the digital terrain models that were produced as part of the 1:5,000 Black and White Digital Orthophoto imagery ...


25. Digital Elevation Model (1:5,000) - Integer version [MassGIS_GISDATA.IMG_ELEV5K_I]
This raster layer represents surface elevation for Massachusetts. It was created from the digital terrain models that were produced as part of the 1:5,000 Black and White Digital Orthophoto imagery ...


26. Division of Fisheries and Wildlife Districts (Arcs) [MassGIS_GISDATA.DFWDISTRICTS_ARC]
This layer represents the district boundaries of the Massachusetts Division of Fisheries and Wildlife. These districts are used by DFW and its parent agency, the Department of Fish and Game, for administrative ...


27. Division of Fisheries and Wildlife Districts (Polygons) [MassGIS_GISDATA.DFWDISTRICTS_POLY]
This layer represents the district boundaries of the Massachusetts Division of Fisheries and Wildlife. These districts are used by DFW and its parent agency, the Department of Fish and Game, for administrative ...


28. Ferry Routes [MassGIS_GISDATA.FERRYROUTES_ARC]
This arc datalayer contains ferry routes within Massachusetts. This layer denotes if a ferry route transports freight and/or passengers as well as whether or not it is part of the National Highway ...


29. Fish Traps (Weirs) [MassGIS_GISDATA.FISHTRAPS_PT]
The Fish Traps (weirs) datalayer contains the point locations of fish trap permit holders' traps. These permit holders are licensed by the town in which the traps reside as well as by the MA Division ...


30. Groundwater Discharge Permits [MassGIS_GISDATA.GWP_PT]
The Department of Environmental Protection (DEP) Division of Watershed Management (DWM) Water Permitting Program (WPP) is responsible for regulating the discharge of pollutants to the ground waters ...


31. Hydrography (1:100,000) (Polygons) [MassGIS_GISDATA.HYDRO100K_POLY]
MassGIS has adapted and modified the U.S. Geological Survey 1:100,000 Hydrography Digital Line Graph (DLG) quadrangle files to produce two layers: * HYDRO100K_POLY - ponds and lakes * HYDRO100K_ARC ...


32. Hydrography (1:25,000) (Arcs) [MassGIS_GISDATA.HYDRO25K_ARC]
The MassGIS 1:25,000 Hydrography datalayer represents hydrographic (water-related) features, including surface water (lakes, ponds, reservoirs), wetlands, bogs, flats, rivers, streams, and others ...


33. Hydrography (1:25,000) (Polygons) [MassGIS_GISDATA.HYDRO25K_POLY]
The MassGIS 1:25,000 Hydrography datalayer represents hydrographic (water-related) features, including surface water (lakes, ponds, reservoirs), wetlands, bogs, flats, rivers, streams, and others ...


34. Impervious Surface [MassGIS_GISDATA.IMG_IMPERVIOUSSURFACE]
The Impervious Surface raster layer represents impervious surfaces covering the Commonwealth of Massachusetts. The surfaces were extracted using semi-automated techniques by Sanborn Map Company from ...


35. MWRA Water/Sewer Service Areas [MassGIS_GISDATA.MWRASERVICE_POLY]
This polygon datalayer shows the areas across the commonwealth with water and sewer service as provided by the Massachusetts Water Resources Authority. Most of the service areas are based on city ...


36. Marine Beaches (Arcs) [MassGIS_GISDATA.MARINEBEACHES_ARC]
Beaches Extent Data for Massachusetts


37. MassDEP Tier Classified Chapter 21E Oil and Hazardous Materials Release Sites [MassGIS_GISDATA.C21E_PT]
The MassDEP Tier Classified Oil and/or Hazardous Material Sites datalayer is a statewide point dataset containing the approximate location of oil and/or hazardous material disposal sites that have ...


38. NHESP BioMap Core Habitat [MassGIS_GISDATA.BIOCORE_POLY]
Core Habitat is one of two datalayers resulting from the BioMap biodiversity mapping project.The Core Habitat layer depicts the most viable habitat for rare species and natural communities in Massachusetts. ...


39. NHESP BioMap Supporting Natural Landscape [MassGIS_GISDATA.BIOSNL_POLY]
Supporting Natural Landscape is one of two datalayers resulting from the BioMap biodiversity mapping project (also see the NHESP BioMap Core Habitat datalayer description). The Supporting Natural ...


40. NHESP Estimated Habitats of Rare Wildlife [MassGIS_GISDATA.ESTHAB_POLY]
Estimated Habitats are for use with the Wetlands Protection Act regulations (310 CMR 10.00). The Estimated Habitats of Rare Wildlife datalayer contains polygons that are a subset of the Priority Habitats ...


41. NRCS HUC Basins (8, 10, 12) Annotation [MassGIS_GISDATA.NRCSHUC_ANNO]
This dataset is a digital hydrologic unit boundary layer that is at the Subwatershed (12-digit) level. The layer also includes delineations at the Watershed (10-digit) and Subbasin (8-digit) levels. ...


42. NRCS HUC Basins (8, 10, 12) Outlines [MassGIS_GISDATA.NRCSHUC_ARC]
This dataset is a digital hydrologic unit boundary layer that is at the Subwatershed (12-digit) level. The layer also includes delineations at the Watershed (10-digit) and Subbasin (8-digit) levels. ...


43. NRCS HUC Basins (8,10,12) [MassGIS_GISDATA.NRCSHUC_POLY]
This dataset is a digital hydrologic unit boundary layer that is at the Subwatershed (12-digit) level. The layer also includes delineations at the Watershed (10-digit) and Subbasin (8-digit) levels. ...


44. Ocean Mask [MassGIS_GISDATA.OCEANMASK_POLY]
Ocean mask polygon layer for Massachusetts and bordering states, including Long Island, NY. For cartographic display purposes.


45. State of the Environment Regions [MassGIS_GISDATA.STENVREGIONS_POLY]
As part of the Executive Office of Environmental Affairs' Community Preservation Initiative, the 351 Massachusetts cities and towns were grouped into 10 "State of the Environment" regions. This layer ...


46. USGS Historical Coastal Topographic Map [MassGIS_GISDATA.IMG_USGS_HIST_COASTAL]
This layer is a digital raster graphic of the historical 15-minute USGS topographic quadrangle maps of coastal towns in Massachusetts. These quadrangles were mosaicked together to create a single ...


47. Acidic Peatland Community Systems [MassGIS_GISDATA.VCPEATLAND_POLY]
Acidic Peatland Community Systems include evergreen forest and shrub bogs, Atlantic White Cedar (AWC) swamps and bogs, and shrub and graminoid fens. This data was created by starting with the DEP ...


48. Aquifers (Polygons) [MassGIS_GISDATA.AQUIFERS_POLY]
MassGIS produced an aquifer datalayer composed of 20 individual panels, generally based on the boundaries of the major drainage basins. Areas of high and medium yield were mapped. These panels, which ...


49. Assessor Parcels (Level II-compliant) [MassGIS_GISDATA.ASSESSPAR_POLY]
The digital parcel data in this data layer were provided to MassGIS by communities, or their regional planning agency partners, that received parcel grants from MassGIS in 2002 and 2006. Each municipality's ...


50. Boston Harbor Water Taxi Stops [MassGIS_GISDATA.WATERTAXISTOPS_PT]
This point datalayer contains the name and location of water taxi stops in the Boston Harbor. The water taxi station names and general locations were obtained from the City Water Taxi website (http://www.citywatertaxi.com/index.htm). ...


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