Description: This dataset contains representations of Massachusetts Bay Transportation Authority (MBTA) bus stops for the Spring 2017 schedule. The layer was developed by the Central Transportation Planning Staff (CTPS) of the Boston Region Metropolitan Planning Organization (MPO). The primary input sources were the General Transit Feed Specification (GTFS) shapes, stops and stop-times files produced by the MBTA for each quarterly schedule. The shapes file provides a sequence of point coordinates for each route. The stops file provides the coordinates for each transit stop and station. A sequential list of stops for each for each route was extracted from the stop-times file, which provides scheduled departure times by stop for each trip. The stop lists by route were edited to match those obtained from the MBTA's schedule database. Point feature classes were generated from the shape and stop coordinate files, and their features snapped to Massachusetts Department of Transportation 2011 roadway inventory features. Stop points underwent further edits to improve locational accuracy.
Copyright Text: Massachusetts Bay Transportation Authority (MBTA), Central Transportation Planning Staff (CTPS), Boston Region Metropolitan Planning Organization (MPO)
Description: The MBTA Rapid Transit Station layers represents the station stops on the five subway, streetcar/trolley and Silver Line bus lines in the Massachusetts Bay Transportation Authority’s rapid transit rail network. Stations are contained in a point feature class named MBTA_NODE. The five ‘T’ lines - Blue, Green, Orange, Red and Silver - are represented with linework in the layer MBTA_ARC. The layers were developed by the Central Transportation Planning Staff (CTPS), with additional editing by MassGIS based on current information from mbta.com. The MBTA Commuter Rail lines are included in the TRAINS_ARC layer. It should be noted that the Silver Line actually consists of buses, not trains, but the line is included in this layer because the MBTA includes it as part of its Subway system map (see https://www.mbta.com/schedules/subway).
Copyright Text: Central Transportation Planning Staff, mbta.com, MassGIS
Description: The MBTA Rapid Transit Station layers represents the station stops on the five subway, streetcar/trolley and Silver Line bus lines in the Massachusetts Bay Transportation Authority’s rapid transit rail network. Stations are contained in a point feature class named MBTA_NODE. The five ‘T’ lines - Blue, Green, Orange, Red and Silver - are represented with linework in the layer MBTA_ARC. The layers were developed by the Central Transportation Planning Staff (CTPS), with additional editing by MassGIS based on current information from mbta.com. The MBTA Commuter Rail lines are included in the TRAINS_ARC layer. It should be noted that the Silver Line actually consists of buses, not trains, but the line is included in this layer because the MBTA includes it as part of its Subway system map (see https://www.mbta.com/schedules/subway).
Copyright Text: Central Transportation Planning Staff, mbta.com, MassGIS
Description: This layer represents named passenger, commuter and freight train stations, as developed by the Central Transportation Planning Staff (CTPS). The data include the MBTA Commuter Rail stations. Stored in ArcSDE and distributed as a shapefile, the statewide layer is named TRAINS_NODE. Other related datasets include TRAINS_ARC (railroad lines) and TRAINS_RTE_TRAIN (MBTA Commuter Rail Routes).Data are current as of October 30, 2025.
Copyright Text: Central Transportation Planning Staff, MassGIS
Description: The National Flood Hazard Layer (NFHL) data incorporates all Flood Insurance Rate Map (FIRM) databases published by the Federal Emergency Management Agency (FEMA), and any Letters of Map Revision (LOMRs) that have been issued against those databases since their publication date. It is updated on a monthly basis. The FIRM Database is the digital, geospatial version of the flood hazard information shown on the published paper FIRMs.The FIRM Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The FIRM Database is derived from Flood Insurance Studies (FISs), previously published FIRMs, flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by FEMA.The NFHL is available as State or US Territory data sets. Each State or Territory data set consists of all FIRM Databases and corresponding LOMRs available on the publication date of the data set.The specification for the horizontal control of FIRM Databases is consistent with those required for mapping at a scale of 1:12,000. This file is georeferenced to the Earth's surface using the Geographic Coordinate System (GCS) and North American Datum of 1983.This layer, named FEMA_NFHL_POLY, includes data published by FEMA as of July 18, 2025 (Latest Study Effective Date = 07/08/2025; Latest LOMR Effective Date = 07/09/2025). MassGIS downloaded all available data for Massachusetts from the FEMA Flood Map Service Center in a file geodatabase and projected the S_FLD_HAZ_AR feature class to Mass. State Plane Mainland Meters (FIPSZONE 2001) and added the LABEL field.
Copyright Text: Federal Emergency Management Agency
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Description: The political boundary datalayer is a polygon representation of city and town boundaries created from arcs developed from survey coordinates extracted from the 68-volume Harbor and Lands Commission Town Boundary Atlas for the 351 communities (cities and towns) in Massachusetts. The Atlas was published in the early 1900's and is maintained by the Survey Section of Massachusetts Highway Department. For communities with a coastal boundary, MassGIS has collaborated with Massachusetts Water Resources Authority and the Department of Environmental Protection to complete a 1:12000 scale coastline. The boundary for the coastline was defined as being the upland side of tidal flats and rocky inter-tidal zones. Note that the 351 communities are the official municipal names, not including "villages" or other sections of towns. This layer contains multi-part polygons, in which islands or sections of municipalities separated by water have all been merged to create one feature per city or town.