Description: The data model starts with Esri's Local Government Informational Model (LGIM). Fields are added to enable a network dataset to be built for Fire truck routing in Network Analyst. The fields "Official" and "Admin" enable users to select or draw centerlines for various purposes. For example, DPW&P maintains the Official Street Map and will use the "Official = yes" to model this.
Definition Expression: N/A
Copyright Text: Research on the Local Government Information Model and development of process to migrate current centerline feature class to LGIM completed by Clark University intern Noam Raffel August 2013. Editing and maintenance responsiblity currently handled by Claire Brill, GIS Manager.
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Description: This layer was created in March 2021 by DPRS to be used with OpenGov help automate determinations of whether a building permit requires Conservation Commission review, based on proximity to catch basins.The process for creating this layer involved creating a layer of 110' buffers around existing layer "gismapping.GISDATA.DPW_SurfaceCatchBasin", dissolving those, and then erasing those features that fall within the CARD (Commercial Area Revitalization District).
Description: Drain/Surface Valves Layer for City of Worcester, MA. Created from original "Catch_Basins" layer of previously existing Worcester "Sewer_System" data.
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N/A Vertical Alignment: bottom Horizontal Alignment: center Right to Left: false Angle: 0 XOffset: 0 YOffset: 0 Size: 9 Font Family: Arial Font Style: normal Font Weight: normal Font Decoration: none
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Name: MassGIS Merged Wetlands or Wetland Buffer Zones
Display Field: Shape.STArea()
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This layer was created in March 2021 by DPRS to be used with OpenGov to help automate determinations of whether a building permit requires Conservation Commission review, based on proximity to wet (wetlands, streams, ponds, etc.) features or floodplains. The process for creating this layer involved downloading the most recently available data from MassGIS (as last revised in 2020) for the following layers indicating possible mapped wet features:NHESP Potential Vernal PoolsNHESP Certified Vernal PoolsUSGS Major Ponds and Major StreamsMassDEP Hydrography 25KMassDEP Hydrography 100KMassDEP WetlandsNational Wetland InventoryThese layers were then clipped to the City of Worcester’s boundaries, with a 500' buffer. These clipped layers, along with existing GIS Data basemap layers "gismapping.GISDATA.Basemap_Brooks_Streams" and "gismapping.GISDATA.Basemap_Lakes_Ponds_Rivers", (DATE?) were all buffered 125' feet. FEMA’s Floodplain layers, which also came from MassGIS, showing all areas with a 1% annual chance of flood (i.e. the 100 year or regulatory floodplain), were given a 25' buffer.The wet features (+ the 125' buffer) and the floodplain layers (+ the 25' buffer) were then merged to create the multipart polygon feature here.
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 Dataum of 1983 (NSRS-2007).The data in this layer, named FEMA_NFHL_POLY, include data published by FEMA as of July 14, 2017(Latest Study Effective Date = 11/04/2016; Latest LOMR Effective Date = 07/14/2017).
Definition Expression: N/A
Copyright Text: Federal Emergency Management Agency
Description: This public layer consists of points and polygons representing information from the MACRIS database and related records on file at the MHC, including the Inventory of Historic Assets of the Commonwealth, National Register of Historic Places nomination forms, local historic district study reports, local landmark reports, and other materials. The MACRIS database and the layers within the MACRIS Maps web application are updated regularly as new information is submitted and added, and as the accuracy of earlier versions of the datalayer is improved.Three datalayers are being made available to the public:The Inventory Pointslayer contains the locations of buildings, burial grounds, structures, and objects (e.g. statues, monuments, walls).The points layer is symbolized to indicate the most common historic designation types: 1) National Register of Historic Places, 2) local historic district, 3) both National Register and local historic district, 4) Preservation Restriction, and 5) inventoried but not designated with one of the previous designations. Less common designations are not symbolized in MACRIS, but are included in the Designationsattribute field (see below). MassGIS stores a copy of the point feature class as MHCINV_PT.The Inventory Areaspolygon layer includes areasand districtssymbolized in MACRIS in a similar manner to Inventory Points. MassGIS stores a copy of this polygon feature class as MHCINV_POLY.Another polygon layer, Towns, possesses a binary “y” or blank field to indicate whether MHC staff has completed digitizing the entire inventory for a specific town. Please note that new and updated information is added to MHC files daily, and that there may be considerable lag time before this information is reflected in MACRIS or in MACRIS Maps. Map information for “completed” towns may not reflect the most current information on file with MHC. MassGIS stores a copy of this polygon feature class as MHCTOWNS_POLY.For additional information, users may consult the source records, forms and maps that make up the official Inventory of Historic and Archaeological Assets of the Commonwealth, on file at the MHC, Massachusetts Archives Building, 220 Morrissey Boulevard, Boston, during weekday business hours. No appointment is needed. For directions, see http://www.sec.state.ma.us/mhc/.
Definition Expression: N/A
Copyright Text: Massachusetts Cultural Resource Information System (MACRIS) (http://mhc-macris.net/) maintained by the Massachusetts Historical Commission (MHC).
MassGIS https://docs.digital.mass.gov/dataset/massgis-data-mhc-historic-inventory
Processed by City of Worcester, GIS Manager
Description: This public layer consists of points and polygons representing information from the MACRIS database and related records on file at the MHC, including the Inventory of Historic Assets of the Commonwealth, National Register of Historic Places nomination forms, local historic district study reports, local landmark reports, and other materials. The MACRIS database and the layers within the MACRIS Maps web application are updated regularly as new information is submitted and added, and as the accuracy of earlier versions of the datalayer is improved.Three datalayers are being made available to the public:The Inventory Points layer contains the locations of buildings, burial grounds, structures, and objects (e.g. statues, monuments, walls).The points layer is symbolized to indicate the most common historic designation types: 1) National Register of Historic Places, 2) local historic district, 3) both National Register and local historic district, 4) Preservation Restriction, and 5) inventoried but not designated with one of the previous designations. Less common designations are not symbolized in MACRIS, but are included in the Designationsattribute field (see below). MassGIS stores a copy of the point feature class as MHCINV_PT.The Inventory Areas polygon layer includes areas and districts symbolized in MACRIS in a similar manner to Inventory Points. MassGIS stores a copy of this polygon feature class as MHCINV_POLY.Another polygon layer, Towns, possesses a binary “y” or blank field to indicate whether MHC staff has completed digitizing the entire inventory for a specific town. Please note that new and updated information is added to MHC files daily, and that there may be considerable lag time before this information is reflected in MACRIS or in MACRIS Maps. Map information for “completed” towns may not reflect the most current information on file with MHC. MassGIS stores a copy of this polygon feature class as MHCTOWNS_POLY.For additional information, users may consult the source records, forms and maps that make up the official Inventory of Historic and Archaeological Assets of the Commonwealth, on file at the MHC, Massachusetts Archives Building, 220 Morrissey Boulevard, Boston, during weekday business hours. No appointment is needed. For directions, see http://www.sec.state.ma.us/mhc/.
Definition Expression: N/A
Copyright Text: Massachusetts Cultural Resource Information System (MACRIS) (http://mhc-macris.net/) maintained by the Massachusetts Historical Commission (MHC).
MassGIS https://docs.digital.mass.gov/dataset/massgis-data-mhc-historic-inventory
Processed by City of Worcester, GIS Manager
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[52, 52, 52, 255] Background Color:
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