Description: The Massachusetts Department of Transportation Highway Division Road Inventory contains the spatial linework for all the public and a good portion of the private roadways in Massachusetts, along with roadway attributes covering the roadway classification, ownership, physical conditions, traffic volumes, pavement conditions, highway performance monitoring information, and more. This version has been processed by CTPS to eliminate overlaps among features in the original distributed by MassDOT and to add pavement data, which is no longer attached by MassDOT.
Copyright Text: MassDOT Office of Transportation Planning, Central Transportation Planning Staff
Description: 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 the last 25 years in the database of the Natural Heritage & Endangered Species Program (NHESP). Priority Habitat polygons are the filing trigger for project proponents, municipalities, and all others for determining whether or not a proposed project or activity must be reviewed by the NHESP for compliance with the (MESA) and its implementing regulations. Areas delineated as Priority Habitats can include wetlands, uplands, and marine habitats. The Priority Habitats presented here are part of the 15th Edition of the Massachusetts Natural Heritage Atlas, and are effective beginning August 1, 2021.If your project or activity falls within Priority Habitat and does not meet a MESA filing exemption (321 CMR 10.14), then you must file directly with the NHESP pursuant to MESA. For more information, please see www.mass.gov/dfw/nhesp/regulatory-review.The Priority Habitats of Rare Species datalayer is stored in ArcSDE as PRIHAB_POLY.Priority Habitats were digitized by NHESP scientists from documented observations of state-listed rare species and are based on such factors as reported species movements and known habitat requirements. The polygons were heads-up digitized in ArcGIS 10x and referenced to the MassGIS 2019 Aerial Imagery.Occurrence records are continually being added, updated, deleted or otherwise modified in the NHESP database. These changes are incorporated into revisions to the Priority Habitats of Rare Species datalayer every four years.Questions about the creation of this datalayer and its use should be directed to NHESP at 508-389-6360 or natural.heritage@state.ma.us.
Copyright Text: Natural Heritage & Endangered Species Program, MassGIS
Description: This dataset consists of 2-dimensional roof outlines ("roofprints") for all buildings larger than 150 square feet, as initially interpreted by a contractor (Rolta) for the whole area of the Commonwealth using DigitalGlobe ortho images obtained in 2011 and 2012, supplemented with LiDAR (Light Detection And Ranging) data collected from 2002 to 2011 for the eastern half of the state.The roofprints as delivered by Rolta were enhanced by MassGIS using Normalized Digital Surface Models (NDSMs) derived from the same LiDAR data. Other layers were used, including the Standardized Parcels, to aid in review, especially where LiDAR data were not available.In 2019, MassGIS refreshed the data to a baseline of 2016 and continues to update features using newer aerial imagery that allows MassGIS staff to remove, modify and add structures to keep up with more current ground conditions. Structures from the original compilation that are removed are stored in an "archive" feature class for edit tracking and historical purposes. Also in 2019, MassGIS replaced the polygons in Boston with data from the city. In March 2021, the layer was updated with 2017 and 2018 structure review edits along with the first data edits compiled atop spring 2019 imagery. Updates based on 2019 imagery were completed in July 2021.Last updated on 7/1/2021.In ArcSDE the layer is named STRUCTURES_POLY.
Description: The political boundary datalayer is a 1:25,000 scale datalayer containing the boundaries of the 351 communities (cities and towns) in Massachusetts. The seaward boundary of coastal communities has been defined at mean high water in this datalayer. The datalayer is named TOWNS_POLY. Note that the 351 communities are the official municipal names, not including "villages" or other sections of towns. This layer includes single-part features, where offshore islands are separate features from the mainland, although the attributes are the same for all features in one municipality.This datalayer, except the coastline, was digitized by MassGIS from a set of stable based film prints of the 1:25,000 7.5' quadrangles purchased from the USGS by the Massachusetts Dept. of Public Works. The coastline was taken from the USGS 1:100,000 hydrography DLG database. It was selected visually and appended to the digitized town boundaries.
Description: The political boundary datalayer is a 1:25,000 scale datalayer containing the boundaries of the 351 communities (cities and towns) in Massachusetts. The seaward boundary of coastal communities has been defined at mean high water in this datalayer. The datalayer is named TOWNS_POLY. Note that the 351 communities are the official municipal names, not including "villages" or other sections of towns. This layer includes single-part features, where offshore islands are separate features from the mainland, although the attributes are the same for all features in one municipality.This datalayer, except the coastline, was digitized by MassGIS from a set of stable based film prints of the 1:25,000 7.5' quadrangles purchased from the USGS by the Massachusetts Dept. of Public Works. The coastline was taken from the USGS 1:100,000 hydrography DLG database. It was selected visually and appended to the digitized town boundaries.
Description: MassGIS' Level 3 Assessors’ Parcel Mapping data set was developed through a competitive procurement funded by MassGIS. Each community in the Commonwealth was bid on by one or more vendors and the unit of work awarded was a city or town. The specification for this work was Level 3 of the MassGIS Digital Parcel Standard. Standardization of assessor parcel mapping is complete for 350 of Massachusetts' 351 cities and towns. (Boston, which is not part of this project, is being processed separately). MassGIS is now incorporating updates from municipalities into the database.
Copyright Text: Commonwealth of Massachusetts Office of Geographic Information (MassGIS)
Description: The Massachusetts Department of Transportation Highway Division Road Inventory contains the spatial linework for all the public and a good portion of the private roadways in Massachusetts, along with roadway attributes covering the roadway classification, ownership, physical conditions, traffic volumes, pavement conditions, highway performance monitoring information, and more. This version has been processed by CTPS to eliminate overlaps among features in the original distributed by MassDOT and to add pavement data, which is no longer attached by MassDOT.
Copyright Text: MassDOT Office of Transportation Planning, Central Transportation Planning Staff
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Urban_Type (type: esriFieldTypeSmallInteger, alias: Urban Type, SQL Type: sqlTypeOther, nullable: true, editable: true, Coded Values: [5: Rural], [1: Large Urbanized Area], [2: Small Urbanized Area], ... 2 more ...)
F_F_Class (type: esriFieldTypeSmallInteger, alias: Federal Functional Class, SQL Type: sqlTypeOther, nullable: true, editable: true, Coded Values: [1: Interstate], [2: Principal Arterial - Other Freeways or Expressways], [3: Principal Arterial - Other], ... 4 more ...)
Jurisdictn (type: esriFieldTypeString, alias: Jurisdictn, SQL Type: sqlTypeOther, length: 1, nullable: true, editable: true, Coded Values: [2: City or Town accepted road], [6: State Park or Forest], [7: State Institutional], ... 15 more ...)
NHS (type: esriFieldTypeSmallInteger, alias: NHS, SQL Type: sqlTypeOther, nullable: true, editable: true, Coded Values: [0: Not on NHS], [2: NHS - Strategic Defense Highway System (STRAHNET)], [3: NHS - STRAHNET Connector], ... 13 more ...)
Fd_Aid_Rd (type: esriFieldTypeSmallInteger, alias: Federal Aid Eligible Road, SQL Type: sqlTypeOther, nullable: true, editable: true, Coded Values: [0: Not Eligible], [1: Interstate - NHS], [2: Other Road - NHS], ... 2 more ...)
Control (type: esriFieldTypeSmallInteger, alias: Access Control, SQL Type: sqlTypeOther, nullable: true, editable: true, Coded Values: [1: Full Access Control], [2: Partial Access Control], [0: No Access Control])
Num_Lanes (type: esriFieldTypeInteger, alias: Number of Travel Lanes, SQL Type: sqlTypeOther, nullable: true, editable: true, Range: [0 - 6])
Opp_Lanes (type: esriFieldTypeInteger, alias: Opposite Number of Travel Lanes, SQL Type: sqlTypeOther, nullable: true, editable: true, Range: [0 - 6])
Surface_Tp (type: esriFieldTypeSmallInteger, alias: Surface Type, SQL Type: sqlTypeOther, nullable: true, editable: true, Coded Values: [1: Unimproved, graded earth, or soil surface road], [2: Gravel or stone road], [3: Brick road], ... 8 more ...)
T_Exc_Type (type: esriFieldTypeSmallInteger, alias: Truck Exclusion Type, SQL Type: sqlTypeOther, nullable: true, editable: true, Coded Values: [1: Open to all vehicles], [2: All vehicles over 2.5 tons excluded], [3: All vehicles over 3 tons excluded], ... 10 more ...)
T_Exc_Time (type: esriFieldTypeSmallInteger, alias: Truck Exclusion Time, SQL Type: sqlTypeOther, nullable: true, editable: true, Coded Values: [4: 6AM to 6PM, 7 Days], [5: 6AM to 7PM, 7 Days], [6: 6AM to 10PM, 7 Days], ... 17 more ...)
Trk_Netwrk (type: esriFieldTypeSmallInteger, alias: Truck Network, SQL Type: sqlTypeOther, nullable: true, editable: true, Coded Values: [1: Section is on the National Network (NN)], [2: Other State-designated truck route (optional)])
Truck_Rte (type: esriFieldTypeSmallInteger, alias: Truck Route, SQL Type: sqlTypeOther, nullable: true, editable: true, Coded Values: [0: Not a parkway - not on a designated truck route], [1: Designated truck route under Federal Authority in 23 CFR 658 Available to STAA vehicles (Twin 28' Semitrailer-trailer and 48' Semitrailer combinations)], [2: Designated truck route ONLY under State Authority. Fully available to both types of STAA vehicles described above], ... 1 more ...)
ROW_Width (type: esriFieldTypeDouble, alias: Right Of Way Width, SQL Type: sqlTypeOther, nullable: true, editable: true)
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Description: The MassDEP Hydrography layer is an enhanced version of the 1:25,000 Hydrography datalayer. It represents hydrographic (water-related) features, including surface water (lakes, ponds, and reservoirs), wetlands, bogs, flats, rivers, streams, and others (see below).The layer is a hybrid of data based on USGS Digital Line Graphs (DLGs), scanned mylar separates obtained from the USGS, digitized hydrographic features from paper USGS 1:25,000 Topographic Quadrangle maps and data extracted from the MassDEP Wetlands datalayer. Areas within many surface water supply watersheds have been enhanced by using higher resolution streams and lakes from the MassDEP Wetlands datalayer, many areas have also been field verified. This layer is intended as an interim product that will be incorporated into the USGS's National Hydrography Dataset (NHD) when funding and resources become available. If you are interested in providing data, funding, field work, or becoming part of an NHD working group, please contact Tara Manno Richer of the MassDEP GIS Program by email at tara.manno@mass.gov.Full metadata available at https://docs.digital.mass.gov/dataset/massgis-data-massdep-hydrography-125000
Description: The DLG quadrangles were converted into Arc/INFO coverages and projected into the Massachusetts State Plane Coordinate System. The long list of items (MAJOR1, MINOR1, MAJOR2, MINOR2...) was then concatenated to a more simplified coding system. For each feature MINORn was truncated to three characters and linked to the other minor codes to create MINOR_TOT. For example, a submerged (612) wetland (111) is now coded MINOR_TOT = 612111. The original MAJORn, MINORn pairs are no longer part of the attribute tables.Quadrangles covering Nantucket and Martha's Vineyard were completely digitized from the 1:25,000 USGS quadrangles. Though not as thoroughly coded as the 1:25,000 DLGs, the linework is all at 1:25,000.The scanned quadrangles were automated in-house by scanning USGS mylar separates at 500 dots per inch. The resulting images were vectorized in GRID and then edited in ARCEDIT. Features missing from the blue line separate (i.e. dams or man-made shore) were digitized from the paper quadrangles. Four quads along the Massachusetts-Connecticut border were obtained from the Connecticut DEP and projected to the Massachusetts State Plane Coordinate System. An ongoing project by the MassDEP GIS Program to redelineate surface water supply watersheds using digital terrain models is adding additional streams within the newly delineated watersheds. These streams are from the MassDEP Wetlands datalayer with some additional on screen digitizing from the 2005 Color OrthoPhotos. Streams added from this process are generally coded as intermittent unless field verification proves otherwise. In 2007 the outlines of all reservoirs were replaced with those from the MassDEP Wetlands datalayer so either dataset can be used with the SWP Zones datalayer. In 2008 field verified streams for the Wachusett Reservoir watershed were provided by DCR West Boylston GIS staff and added.All of the digitized quadrangles were checkplotted at 1:25,000. The 1:25,000 DLG quadrangles were randomly checkplotted. Each of the quadrangles was edgematched to its neighboring quads. The scanned hydrography was compared both to the source mylar and to the paper quadrangles to ensure completeness.
Description: The MassDEP Wetlands dataset comprises two ArcGIS geodatabase feature classes:The WETLANDSDEP_POLY layer contains polygon features delineating mapped wetland resource areas and attribute codes indicating wetland type.The WETLANDSDEP_ARC layer was generated from the polygon features and contains arc attribute coding based on the adjacent polygons as well as arcs defined as hydrologic connections.Together these statewide layers enhance and replace the original MassDEP wetlands layers, formerly known as DEP Wetlands (1:12,000). It should be noted that these layers provide a medium-scale representation of the wetland areas of the state and are for planning purposes only. Wetlands boundary determination for other purposes, such as the Wetlands Protection Act MA Act M.G.L. c. 131 or local bylaws must use the relevant procedures and criteria.The original MassDEP wetlands mapping project was based on the photo-interpretation of 1:12,000, stereo color-infrared (CIR) photography, captured between 1990 and 2000, and included field verification by the MassDEP Wetlands Conservancy Program (WCP). In 2007 the MassDEP WCP began a statewide effort to assess and where necessary update the original wetlands data. The MassDEP WCP used ESRI ArcGIS Desktop software, assisted by the PurVIEW Stereo Viewing extension, to evaluate and update the original wetlands features based on photo-interpretation of 0.5m, (1:5,000) digital stereo CIR imagery statewide, captured in April 2005. No field verification was conducted on this updated 2005 wetlands data.The 2005 WETLANDSDEP_POLY layer includes polygon features that distinguish it from its predecessor by overall changes in size and shape. In addition, new polygons have been created and original ones deleted. Many of the polygons, however, remain the same as in the original layer. All changes have been made according to the techniques described below. For the purpose of cartographic continuity, a small number of coastal polygons outside the state boundary where added based on data provided by the United States Geological Survey (USGS) and the National Oceanic and Atmospheric Administration (NOAA).The 2005 WETLANDSDEP_ARC layer was generated to support map display and was designed to cartographically enhance the rendering of wetland features on a base map. Arc features in this layer were generated from the wetland polygons and coding (ARC_CODE) was assigned based on the adjacent polygon types. Hydrologic connection features (ARC_CODE = 7) were then added. Where delineated, these arc features indicate an observed hydrologic connection to or between wetland polygons. Although efforts were made to be comprehensive and thorough in mapping hydrologic connections, due to the limitations of aerial photo-interpretation some areas may have been missed.The types of updates made to the original wetland features include alteration, movement/realignment and reclassification. In some cases original wetland areas have been deleted and new areas have been added. Updates to original wetland features resulted from the following factors: changes in the natural environment due to human activity or natural causes; advances in the field of remote sensing, allowing for more refined mapping.Edit changes to the original wetland data include:Addition of new wetland and hydrologic connection featuresAppending (expansion or realignment) of existing (original) wetland and hydrologic connection featuresReclassification of wetlands features, due to change in wetlands environment from the original classificationMovement (or shifting) of original wetland features to better match the source imageryDeletion of original wetland or hydrologic connection features due to changes in wetlands environment or inconsistency with mapping criteria.Please note that although efforts were made to be comprehensive and thorough in the evaluation and mapping of statewide wetland resources some areas of the state may have been missed. Many of the wetland and hydrologic connection features remain the same as in the original data. The polygon attribute SOURCE_SCALE may be used to identify areas that have been altered from the original wetlands. The SOURCE_SCALE code 5000 indicates an updated wetland area. The SOURCE_SCALE code 12000 indicates an unaltered, original wetland polygon.
Copyright Text: Massachusetts Deptartment of Environmental Protection (MassDEP) Wetlands Conservancy Program (WCP)
Description: Using digital soils data from the Natural Resources Conservation Service (downloaded from MassGIS), a series of selections and calculations were done to classify soil associations into 9 different categories of prime forest based ultimately on forest productivity in white pine and red oak. Other data sets were used to refine this classification, including aspect, 1999 land use - land cover, riparian, slope position, wetlands, hydrologic soil association and unique areas. The hydrologic soil associations were based on NRCS information that came as Access files with the soils data. All other data was available from MassGIS.
Copyright Text: This dataset was created by David Goodwin while he worked at two different organizations - the University of Massachusetts at Amherst, Department of Natural Resources Conservation and at the Massachusetts Department of Conservation and Recreation, Bureau of Forestry. He can be contacted at (413) 545-5748 or at david.goodwin@state.ma.us with any questions.