Community Boundaries (Towns) from Survey Points (Multi-part Polygons)

MassGIS 20170322 Community Boundaries (Towns) from Survey Points (Multi-part Polygons) vector digital data TOWNSSURVEY_POLY The political boundary datalayer is a polygon representation of 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 datalayer was created for the purposes of providing an up-to-date polygon version of the town boundaries for the 351 communites of the Commonwealth of Massachusetts. The legislative intent for some boundaries could not be mapped. Boundaries where that is true are identified in the attribute information. This layer contains multi-part polygons, one for each municipality. en 20170322 publication date In work As needed -73.533318 -69.898590 42.888312 41.231170 33863.732500 330836.972500 777606.374600 959743.044600 None Commonwealth of Massachusetts, Massachusetts City Boundaries Town Boundaries Survey Points Harbor and Lands Commission Municipal Not applicable. This data set is a public record. This data set, like all other cartographic products may contain inherent aberrations in geography or thematical errors. The boundaries included in this data set were developed using accepted GIS methodology. Cartographic products can never truly represent real-world conditions due to several factors. These factors can include, but are not limited to: human error upon digitizing, computational tolerance of the computer, or the distortion of map symbology. Because of these factors MassGIS cannot be held legally responsible for personal or property damages resulting from any type of use of the data set. These boundaries are suitable for map display and planning purposes. They cannot be used as a substitute for the work of a professional land surveyor. Michael Trust MassGIS Sr. GIS Database Administrator mailing and physical address

One Ashburton Place, Room 819

Boston MA 02108 USA 617-619-5615 michael.trust@state.ma.us 9AM-5PM ESRI ArcCatalog 9.3.1.3000 Feature Class There have been no deliberate or intentional omissions or inclusions of polygon attributes within this data set. Curt Crowe (the National Geodetic Survey's liason to Massachusetts) has stated that "these are not survey quality coordinates. The atlas coordinates were only published to the nearest foot on an early datum and the survey work was done over a thirty year span. The 'Lefti" conversion updated the coordinates but it did not improve their accuracy. I would expect these values to be good to within 3 feet (1 meter) in most cases. Some areas will be slightly better and some could be much worse. " Boundary point locations were determined under The Massachusetts Town Corner Project; Updating the Harbor and Land Commission Town Boundary Atlases to the National Spatial Reference System. The Harbor and Land Commission Town Boundary Atlases contain valuable coordinate data on almost every town bound in Massachusetts. The survey fieldwork (conventional optical triangulation) was done between 1878 and 1912. The geographic coordinates of over 3500 corners and 800 control points were computed and published in a series of 68 atlases between 1880 and 1915. These coordinates were published to the hundredth of a second of arc (+ 1 foot) on the U.S. Standard Datum, a predecessor of the North American Datum and the North American Datum of 1927. In 1999 MassHighway and MassGIS joined forces in an effort to create a digital database of the Town Boundary monuments and to update the coordinate values to the geodetic datums in current use; the North American Datum of 1927 (NAD27) and the North American Datum of 1983 (NAD83). The following method was used: -Automate coordinate data for the 3500 corners and 800 control points -Review, compute, and integrate over 150 pieces of Legislation which alter town lines -Identify control points which are in the NGS Data Base -300 common stations found, these points have US Standard Datum, NAD27 and NAD83 coordinate values -Develop a grid of datum shifts from the 300 common points to be applied to the town corner points -Used the National Geodetic Survey?s LEFTI software -Update the data set to NAD27 geographic coordinates with LEFTI software -Compute NAD27 State Plane Coordinates with GPPCGP software -Update the data set to NAD83 geographic coordinates with NADCON software -Compute NAD83 State Plane Coordinates with SPCS83 software -Graphically review the updated coordinate values The updated coordinates for the boundary points cannot be more accurate than the initial coordinates without additional survey. Given the combination of original survey methods, 100 years of exposure to natural forces and the least squares transformation process, the updated coordinates of the town line bounds should be considered to be accurate in the 1-meter (3 foot) range. Once the updated coordinates had been calculated and entered into an Access database it was passed on to MassGIS. MassGIS then queried out the useful boundary coordinates and created a point shapefile from this information (named TOWNSSURVEY_POINT). The coastline was developed through coordination with Massachusetts Water Resources Authority. The source for the coastline was the 1:12000 scale wetlands data layer, with the coastline boundary being the upland-side boundaries of tidal flats and rocky inter-tidal zones. These upland boundaries were photo-interprested from 1:12000 scale color IR photography. The arc layer was created by adjusting the existing 1:25,000 scale town boundaries to the the survey point data (TOWNSSURVEY_POINT). All GIS work for the arc creation was done using the ARCGIS 8.x suite of products. In many areas, the boundary creation was simply a matter of "connecting the dots" from one boundary point to the next. Where boundaries follow a stream/river or road right of way the boundary was approximately delineated using the 2001 Half Meter Color Orthophotography as a base. All boundaries that follow a water body or a ROW are coded in the attribute table in the BND_QUAL field. A complex boundary situation occurs when a survey point is a "witness mark", denoted by the letters WM in the coordinate name. A witness mark point is an "on-land" representation of the next point along the boundary when that next point is in a river, wetland, or pond. A line drawn between the point before a witness mark and a witness mark point gives you the direction of the town boundary as it proceeds to the next point in the river, wetland, or pond. Witness marks are often but not always on the town boundary. The Harbor and Land Commission Town Boundary Atlases included large scale maps of individual boundary point locations. Digital images of these maps taken by MassGIS were also used as a guide in creating the town boundaries layer. Once the boundary arcs had been updated the updated coastline derived from the wetlands data was appending to the new boundary arcs. The layer was updated on May 24, 2006, when TOWNSSURVEY_PT points ID1 = 1629 (Needham-Wellesley) and 1933 (Winchendon-NH border) were slightly moved to correct coordinate data entry errors. Files were replaced on October 12, 2006, with BND_QUAL values changed along Brookline-Boston border. Files were replaced on December 4, 2007, with five adjusted boundaries based on surveyed right-of-way plans. In September 2009 TYPE was changed to 'TC' for Braintree, Palmer, Randolph and Winthrop. In May 2011 the Boston/Brookline boundary was modified (topological edit based on ARC feature class line moved from point ID1 1071 to 798), affecting the two polygon and one arc layers. In June 2011 some pseudo nodes were removed along the Haverhill boundary, affecting the two polygon and one arc layers. In October 2011 edits were made along the boundaries of: Palmer-Monson (based on parcels); West Springfield-Agawam (Acts and Resolves redefinition); Douglas-Uxbridge and Grafton-Westborough (legislative changes). Jennifer Inzana MassGIS GIS Database Specialist mailing and physical address

251 Causeway Street, Suite 500

Boston MA 02114 USA 617-626-1196 617-626-1249 jennifer.inzana@state.ma.us 0800 - 1630 EST Michael Trust MassGIS Sr. GIS DBA mailing and physical address

251 Causeway St., Suite 500

Boston MA 02114 617-626-1195 Boundaries were modified in November and December, 2007, in five locations in Norfolk County, adjusted to match surveyed right-of-way (ROW) plans provided by the Norfolk County Engineering department. Edits included: - Bay Road (Sharon-Stoughton); - Clapboardtree Street (Norwood-Westwood); - Old Post Road (Walpole-Sharon); - Canton Street (Norwood-Westwood and Canton-N-W); - County Street (Dover-Walpole between Medfield and Westwood) ArcGIS 9.2 December 2007 The TYPE field was changed from 'T' to 'TC' for BRAINTREE, PALMER, WINTHROP and RANDOLPH in September 2009. Michael Trust MassGIS Sr. GIS Database Administrator mailing and physical address

One Ashburton Place

Boston MA 02108 617-619-5615 Boston/Brookline boundary modified on May 9, 2011. Topological edit based on ARC feature class line moved from point ID1 1071 to 798. ArcGIS 10 20110509 Michael Trust MassGIS Sr. GIS Database Administrator mailing and physical address

One Ashburton Place

Boston MA 02108 617-619-5615 michael.trust@state.ma.us Pseudo nodes removed along Haverill boundary. ArcGIS 10.0 20110608 Michael Trust MassGIS Sr. GIS Database Administrator mailing and physical address

One Ashburton Place, Room 1601

Boston MA 02108 USA 617-619-5615 michael.trust@state.ma.us Coastal polygons added to offshore areas of Boston and Medford. ArcGIS 10.0 20121105 Michael Trust MassGIS Blackstone-Millville boundary edited based on Level 3 Assessors Parcels data. ArcGIS 10 2013-06-24 Michael Trust MassGIS Edits made to the boundaries of Boxford-Topsfield and Berlin-Hudson. Edits made as part of correcting miscoded coordinates of points in the TOWNSSURVEY_PT layer. ArcGIS 10 2013-12-13 Michael Trust MassGIS Edits made to the boundaries of Eastham-Orleans and Groton-Shirley based on data from L3 Assessor Parcels. ArcGIS 10 2013-12-13 Michael Trust MassGIS Tinker's Island reassigned to Salem from Marblehead. Bumkin Island reassigned from Hingham to Hull. Edits based on data from Level 3 Assessors Parcels. ArcGIS 10 2014-02-04 Michael Trust MassGIS Recoded TYPE = 'TC' for BRIDGEWATER, based on latest data from the Secretary of State's office. 20140206 Michael Trust MassGIS Sr. GIS Database Administrator mailing and physical address

One Ashburton Place, Room 819

Boston MA 02108 The boundary at the Boxford-Topsfield point B-T2 was adjusted again, using coordinates for that point supplied by MassDOT Survey section; a section of the Cambridge-Somerville boundary near Route 28 was modified based on data from Cambridge. ArcMap 10.3.1 20151109 Not Applicable Vector Simple FALSE 0 TRUE FALSE coordinate pair 0.000100 0.000100 meters North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 GCS_North_American_1983 NAD_1983_StatePlane_Massachusetts_Mainland_FIPS_2001 1.000000 Explicit elevation coordinate included with horizontal coordinates Arlington_Boundary Attribute table defining characteristics of towns within the Commonwealth of Massachusetts Feature Class 0 OBJECTID OBJECTID OID 4 0 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. SHAPE Feature geometry. ESRI Coordinates defining the features. Shape Geometry 0 0 0 TOWN City or Town Name TOWN String 21 0 0 TOWN_ID MassGIS Town-ID Code (alphabetical, 1-351) TOWN_ID Integer 4 0 0 POP1980 US Census Town Population: 1980 POP1980 Integer 4 0 0 POP1990 US Census Town Population: 1990 POP1990 Integer 4 0 0 POP2000 US Census Town Population: 2000 POP2000 Integer 4 0 0 POPCH80_90 Population change, 1980-1990 POPCH80_90 Integer 4 0 0 POPCH90_00 Population change, 1990-2000 POPCH90_00 Integer 4 0 0 TYPE Type of Town C City T Town TC Town with City form of government TYPE String 2 0 0 FOURCOLOR Codes (1,2,3,4) allowing shading of all towns using 4 symbols (based on four-color theorem where no adjacent polygons have same symbol) FOURCOLOR Integer 4 0 0 SUM_ACRES SUM_ACRES Double 8 0 0 SUM_SQUARE SUM_SQUARE Double 8 0 0 FIPS_STCO Federal Information Processing Standard (FIPS) State/County Code FIPS_STCO Integer 4 0 0 POP2010 POP2010 Integer 4 0 0 US Census Town Population: 2010 US Census Bureau POPCH00_10 POPCH00_10 Integer 4 0 0 Population change, 2000-2010 US Census Bureau Shape_Length Shape_Length Double 8 0 0 Length of feature in internal units. Esri Positive real numbers that are automatically generated. SHAPE_AREA Shape_Area Double 8 0 0 Area of feature in internal units squared. Esri Positive real numbers that are automatically generated. MassGIS mailing and physical address

One Ashburton Place, Room 819

Boston MA 02108 USA Downloadable Data June 2004 unknown Shapefiles and Personal Geodatabase Download from http://www.mass.gov/itd/townsurvey 20170322 Michael Trust MassGIS mailing and physical address

One Ashburton Place, Room 819

Boston MA 02108 USA 617-619-5615 Sr. GIS Database Administrator FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time http://www.mass.gov/itd/townsurvey MassGIS Web Documentation en 20240416 17414000 FALSE 20230309 13065000 20240404 10032800 Arlington_Boundary 002 33863.732500 330836.972500 777606.374600 959743.044600 1 8.742 Projected GCS_North_American_1983 NAD_1983_StatePlane_Massachusetts_Mainland_FIPS_2001_Feet <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.0.0'><WKT>PROJCS["NAD_1983_StatePlane_Massachusetts_Mainland_FIPS_2001_Feet",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",656166.6666666665],PARAMETER["False_Northing",2460625.0],PARAMETER["Central_Meridian",-71.5],PARAMETER["Standard_Parallel_1",41.71666666666667],PARAMETER["Standard_Parallel_2",42.68333333333333],PARAMETER["Latitude_Of_Origin",41.0],UNIT["Foot_US",0.3048006096012192],AUTHORITY["EPSG",2249]],VERTCS["NAVD_1988",VDATUM["North_American_Vertical_Datum_1988"],PARAMETER["Vertical_Shift",0.0],PARAMETER["Direction",1.0],UNIT["Meter",1.0],AUTHORITY["EPSG",5703]]</WKT><XOrigin>-119851500</XOrigin><YOrigin>-94498200</YOrigin><XYScale>3048.0060960121928</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.0032808333333333331</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>102686</WKID><LatestWKID>2249</LatestWKID><VCSWKID>5703</VCSWKID><LatestVCSWKID>5703</LatestVCSWKID></ProjectedCoordinateSystem> Linear Unit: Foot_US (0.304801) FGDC 1.0 625000 5000 FGDC CSDGM Metadata Michael Trust MassGIS Sr. GIS Database Administrator 617-619-5615 One Ashburton Place, Room 819 Boston MA 02108 US 20220426 ArcGIS Metadata 1.0 MassGIS One Ashburton Place, Room 819 Boston MA 02108 US 617-619-5611 Download from http://www.mass.gov/itd/townsurvey 2014-02-06T00:00:00 Shapefiles and Personal Geodatabase ArcGIS 10 File Geodatabase Feature Class ArcGIS 10 8.742 Arlington Boundary from Survey Points (polygon) 2022-04-26T00:00:00 MassGIS <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The Arlington, Massachusetts town boundary was extracted from the statewide layer TOWNSSURVEY_POLYM.</SPAN></P><P><SPAN>The political boundary datalayer, TOWNSSURVEY_POLYM, is a polygon representation of 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.</SPAN></P></DIV></DIV></DIV> Arlington polygon boundary extracted from the MassGIS layer: Arlington_poly. Data source last updated: April 2023 This datalayer was created for the purposes of providing an up-to-date polygon version of the Arlington, Massachusetts town boundary. It is extracted from the statewide layer TOWNSSURVEY_POLYM. Michael Trust MassGIS Sr. GIS Database Administrator 617-619-5615 One Ashburton Place, Room 819 Boston MA 02108 US michael.trust@state.ma.us 9AM-5PM Commonwealth of Massachusetts Massachusetts City Boundaries Town Boundaries Survey Points Harbor and Lands Commission Municipal Commonwealth of Massachusetts Massachusetts City Boundaries Town Boundaries Survey Points Harbor and Lands Commission Municipal <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Use constraints: This data set, like all other cartographic products may contain inherent aberrations in geography or thematical errors. The boundaries included in this data set were developed using accepted GIS methodology. Cartographic products can never truly represent real-world conditions due to several factors. These factors can include, but are not limited to: human error upon digitizing, computational tolerance of the computer, or the distortion of map symbology. Because of these factors MassGIS cannot be held legally responsible for personal or property damages resulting from any type of use of the data set. These boundaries are suitable for map display and planning purposes. They cannot be used as a substitute for the work of a professional land surveyor.</SPAN></P></DIV></DIV></DIV> publication date 1880 present -73.533318 -69.898590 42.888312 41.231170 1 Esri ArcGIS 13.0.3.36057 002 Massachusetts Highway Survey Section, MassGIS None There have been no deliberate or intentional omissions or inclusions of polygon attributes within this data set. Curt Crowe (the National Geodetic Survey's liason to Massachusetts) has stated that "these are not survey quality coordinates. The atlas coordinates were only published to the nearest foot on an early datum and the survey work was done over a thirty year span. The 'Lefti" conversion updated the coordinates but it did not improve their accuracy. I would expect these values to be good to within 3 feet (1 meter) in most cases. Some areas will be slightly better and some could be much worse. " Boundary point locations were determined under The Massachusetts Town Corner Project; Updating the Harbor and Land Commission Town Boundary Atlases to the National Spatial Reference System. The Harbor and Land Commission Town Boundary Atlases contain valuable coordinate data on almost every town bound in Massachusetts. The survey fieldwork (conventional optical triangulation) was done between 1878 and 1912. The geographic coordinates of over 3500 corners and 800 control points were computed and published in a series of 68 atlases between 1880 and 1915. These coordinates were published to the hundredth of a second of arc (+ 1 foot) on the U.S. Standard Datum, a predecessor of the North American Datum and the North American Datum of 1927. In 1999 MassHighway and MassGIS joined forces in an effort to create a digital database of the Town Boundary monuments and to update the coordinate values to the geodetic datums in current use; the North American Datum of 1927 (NAD27) and the North American Datum of 1983 (NAD83). The following method was used: -Automate coordinate data for the 3500 corners and 800 control points -Review, compute, and integrate over 150 pieces of Legislation which alter town lines -Identify control points which are in the NGS Data Base -300 common stations found, these points have US Standard Datum, NAD27 and NAD83 coordinate values -Develop a grid of datum shifts from the 300 common points to be applied to the town corner points -Used the National Geodetic Survey?s LEFTI software -Update the data set to NAD27 geographic coordinates with LEFTI software -Compute NAD27 State Plane Coordinates with GPPCGP software -Update the data set to NAD83 geographic coordinates with NADCON software -Compute NAD83 State Plane Coordinates with SPCS83 software -Graphically review the updated coordinate values The updated coordinates for the boundary points cannot be more accurate than the initial coordinates without additional survey. Given the combination of original survey methods, 100 years of exposure to natural forces and the least squares transformation process, the updated coordinates of the town line bounds should be considered to be accurate in the 1-meter (3 foot) range. Once the updated coordinates had been calculated and entered into an Access database it was passed on to MassGIS. MassGIS then queried out the useful boundary coordinates and created a point shapefile from this information (named TOWNSSURVEY_POINT). The coastline was developed through coordination with Massachusetts Water Resources Authority. The source for the coastline was the 1:12000 scale wetlands data layer, with the coastline boundary being the upland-side boundaries of tidal flats and rocky inter-tidal zones. These upland boundaries were photo-interprested from 1:12000 scale color IR photography. The arc layer was created by adjusting the existing 1:25,000 scale town boundaries to the the survey point data (TOWNSSURVEY_POINT). All GIS work for the arc creation was done using the ARCGIS 8.x suite of products. In many areas, the boundary creation was simply a matter of "connecting the dots" from one boundary point to the next. Where boundaries follow a stream/river or road right of way the boundary was approximately delineated using the 2001 Half Meter Color Orthophotography as a base. All boundaries that follow a water body or a ROW are coded in the attribute table in the BND_QUAL field. A complex boundary situation occurs when a survey point is a "witness mark", denoted by the letters WM in the coordinate name. A witness mark point is an "on-land" representation of the next point along the boundary when that next point is in a river, wetland, or pond. A line drawn between the point before a witness mark and a witness mark point gives you the direction of the town boundary as it proceeds to the next point in the river, wetland, or pond. Witness marks are often but not always on the town boundary. The Harbor and Land Commission Town Boundary Atlases included large scale maps of individual boundary point locations. Digital images of these maps taken by MassGIS were also used as a guide in creating the town boundaries layer. Once the boundary arcs had been updated the updated coastline derived from the wetlands data was appending to the new boundary arcs. The layer was updated on May 24, 2006, when TOWNSSURVEY_PT points ID1 = 1629 (Needham-Wellesley) and 1933 (Winchendon-NH border) were slightly moved to correct coordinate data entry errors. Files were replaced on October 12, 2006, with BND_QUAL values changed along Brookline-Boston border. Files were replaced on December 4, 2007, with five adjusted boundaries based on surveyed right-of-way plans. In September 2009 TYPE was changed to 'TC' for Braintree, Palmer, Randolph and Winthrop. In May 2011 the Boston/Brookline boundary was modified (topological edit based on ARC feature class line moved from point ID1 1071 to 798), affecting the two polygon and one arc layers. In June 2011 some pseudo nodes were removed along the Haverhill boundary, affecting the two polygon and one arc layers. In October 2011 edits were made along the boundaries of: Palmer-Monson (based on parcels); West Springfield-Agawam (Acts and Resolves redefinition); Charlemont-Hawley, Douglas-Uxbridge and Grafton-Westborough (legislative changes). Jennifer Inzana MassGIS GIS Database Specialist 617-626-1196 617-626-1249 251 Causeway Street, Suite 500 Boston MA 02114 US jennifer.inzana@state.ma.us 0800 - 1630 EST 2006-10-12T00:00:00 Boundaries were modified in November and December, 2007, in five locations in Norfolk County, adjusted to match surveyed right-of-way (ROW) plans provided by the Norfolk County Engineering department. Edits included: - Bay Road (Sharon-Stoughton); - Clapboardtree Street (Norwood-Westwood); - Old Post Road (Walpole-Sharon); - Canton Street (Norwood-Westwood and Canton-N-W); - County Street (Dover-Walpole between Medfield and Westwood) Michael Trust MassGIS Sr. GIS DBA 617-626-1195 251 Causeway St., Suite 500 Boston MA 02114 2007-12-12T00:00:00 The TYPE field was changed from 'T' to 'TC' for BRAINTREE, PALMER, WINTHROP and RANDOLPH in September 2009. 2009-09-16T00:00:00 Michael Trust MassGIS Sr. GIS DBA 617-626-1195 251 Causeway St., Suite 500 Boston MA 02114 Michael Trust Boston/Brookline boundary modified on May 9, 2011. Topological edit based on ARC feature class line moved from point ID1 1071 to 798. 2011-05-09T00:00:00 Michael Trust MassGIS Sr. GIS Database Administrator 617-619-5615 One Ashburton Place Boston MA 02108 Pseudo nodes removed along Haverill boundary. 2011-06-08T00:00:00 Michael Trust MassGIS Sr. GIS Database Administrator 617-619-5615 One Ashburton Place Boston MA 02108 michael.trust@state.ma.us Coastal polygons added to offshore areas of Boston and Medford. 2012-11-05T00:00:00 Michael Trust MassGIS Sr. GIS Database Administrator 617-619-5615 One Ashburton Place, Room 1601 Boston MA 02108 US Michael Trust Michael Trust Blackstone-Millville boundary edited based on Level 3 Assessors Parcels data. 2013-06-24T00:00:00 Michael Trust MassGIS Sr. GIS Database Administrator 617-619-5615 One Ashburton Place, Room 1601 Boston MA 02108 US Michael Trust Edits made to the boundaries of Boxford-Topsfield and Berlin-Hudson. Edits made as part of correcting miscoded coordinates of points in the TOWNSSURVEY_PT layer. 2013-12-13T00:00:00 Michael Trust MassGIS Sr. GIS Database Administrator 617-619-5615 One Ashburton Place, Room 1601 Boston MA 02108 US Michael Trust Edits made to the boundaries of Eastham-Orleans and Groton-Shirley based on data from L3 Assessor Parcels. 2013-12-13T00:00:00 Michael Trust MassGIS Sr. GIS Database Administrator 617-619-5615 One Ashburton Place, Room 1601 Boston MA 02108 US Michael Trust Tinker's Island reassigned to Salem from Marblehead. Bumkin Island reassigned from Hingham to Hull. Edits based on data from Level 3 Assessors Parcels. 2014-02-04T00:00:00 Michael Trust MassGIS Sr. GIS Database Administrator 617-619-5615 One Ashburton Place, Room 1601 Boston MA 02108 US Michael Trust Recoded TYPE = 'TC' for BRIDGEWATER, based on latest data from the Secretary of State's office. 2014-02-06T00:00:00 Michael Trust MassGIS Sr. GIS Database Administrator 617-619-5615 One Ashburton Place, Room 1601 Boston MA 02108 US Michael Trust Duxbury-Pembroke border along Pine Brook updated based on scanned survey plan approved by the Duxbury planning board in 1953. Improves upon the previous boundary line, which was heads-up digitized based on stream visible on ortho imagery. 2015-03-13T00:00:00 The boundary at the Boxford-Topsfield point B-T2 was adjusted again, using coordinates for that point supplied by MassDOT Survey section; a section of the Cambridge-Somerville boundary near Route 28 was modified based on data from Cambridge. 2015-11-09T00:00:00 Michael Trust MassGIS Sr. GIS Database Administrator 617-619-5615 One Ashburton Place, Room 819 Boston MA 02108 US Michael Trust Boundaries updated between Canton-Sharon-Norwood; Sharon-Walpole; Barnstable-Mashpee; Holland-Wales. These changes were based on Level 3 parcels data, newer imagery, scanned Harbor and Lands Atlas plans, and input from the affected towns. Most of these boundaries followed streams or rights-of-way that were either traced atop older imagery or not modified from the 1:25,000 mapping of community boundaries. 2016-12-22T00:00:00 MassGIS One Ashburton Place, Room 819 Boston MA 02108 US 617-619-5611 MassGIS MassGIS edited boundaries along the borders of: BERLIN-HUDSON (snap lines to the BERLIN-HUDSON 1 and BERLIN-HUDSON 2 corner points); BOXFORD-TOPSFIELD (snap line to the BOXFORD-TOPSFIELD 3 corner point); DUXBURY-PEMBROKE (snap to Duxbury's Level 3 parcel data); LYNN-LYNNFIELD (based on new delivery of Level 3 parcels from Lynn, near the LYNN-LYNNFIELD 2 town corner point); WALPOLE-WESTWOOD-NORWOOD (snap lines along water boundary to Level 3 parcel data from DOVER-WALPOLE-WESTWOOD corner point to NORWOOD-WALPOLE 1 corner point). 2017-03-22T00:00:00 Michael Trust MassGIS Sr. GIS Database Administrator 617-619-5615 One Ashburton Place, Room 819 Boston MA 02108 US Michael Trust Modified boundaries along the Fitchburg-Leominster and Chilmark-Aquinnah boundaries based on Standardized Parcels and plans submitted by the towns. 2019-08-30T00:00:00 Michael Trust MassGIS Sr. GIS Database Administrator 617-619-5615 One Ashburton Place, Room 819 Boston MA 02108 US Michael Trust Modified the Chelsea-Everett boundary by up to about 125 feet near Beacham Street, based on Standardized Parcels and plans submitted by the cities. 2020-02-28T00:00:00 Michael Trust MassGIS Sr. GIS Database Administrator 617-619-5615 One Ashburton Place, Room 819 Boston MA 02108 US Michael Trust Minor topology edits 2020-03-10T00:00:00 Michael Trust MassGIS Sr. GIS Database Administrator 617-619-5615 One Ashburton Place, Room 819 Boston MA 02108 US Michael Trust Modified the Lynnfield-Wakefield boundary to match a stream channel as seen on a scanned plan submitted by Wakefield. Changed TYPE to 'C' for Greenfield and 'TC' for North Attleborough. 2020-06-12T00:00:00 Michael Trust MassGIS Sr. GIS Database Administrator 617-619-5615 One Ashburton Place, Room 819 Boston MA 02108 US Michael Trust Modified small sections of the Canton-Stoughton and Dartmouth-Westport boundaries based on further review from the affected towns of figures and descriptions found in the Harbor and Land Commission Atlas. 2020-08-25T00:00:00 Michael Trust MassGIS Sr. GIS Database Administrator 617-619-5615 One Ashburton Place, Room 819 Boston MA 02108 US Michael Trust Modified boundaries between: Boston-Brookline 17 and 18 and Boston-Brookline 22 and 23 survey points to match Brookline's parcels. Boston-Everett 4 and 5 survey points (straight line connection) to match survey plan. Boston and Everett, through BE-2 survey points to match survey plan. Hanover-Norwell along Third Herring Brook based on survey plan. 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