Description: 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.
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Description: This datalayer contains points for all vernal pools that have been certified by the Natural Heritage and Endangered Species Program (NHESP) according to the Guidelines for Certification of Vernal Pool Habitat (MA Division of Fisheries and Wildlife, 2000). Vernal pools are small, shallow ponds characterized by lack of fish and by periods of dryness. Vernal pool habitat is extremely important to a variety of wildlife species including some amphibians that breed exclusively in vernal pools, and other organisms such as fairy shrimp, which spend their entire life cycles confined to vernal pool habitat. Many additional wildlife species utilize vernal pools for breeding, feeding and other important functions. Certified vernal pools are protected if they fall under the jurisdiction of the Massachusetts Wetlands Protection Act Regulations (310 CMR 10.00). However, the certification of a pool only establishes that it functions biologically as a vernal pool. Certification does not determine that the pool is within a resource area protected by the Wetlands Protection Act. Certified vernal pools are also afforded protection under the state Water Quality Certification regulations (401 Program), the state Title 5 regulations, and the Forest Cutting Practices Act regulations. The Certified Vernal Pools layer is stored in ArcSDE as CVP_PT. Occurrence records of Certified Vernal Pools from the NHESP database are continuously being added and modified. Those changes will be incorporated into the Certified Vernal Pools datalayer twice annually, in the months of January and July. Questions about the creation of this datalayer should be directed to NHESP at 508-389-6375. For questions relating to the certification of Vernal Pools, please call 508-389-6365.
Copyright Text: Natural Heritage and Endangered Species Program (NHESP), MA Division of Fisheries and Wildlife
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: MxxxOthLeg contains polygons representing other “invisible” legal boundaries such as easements or private rights-of-way that overlap tax parcels.There may be few or even no features in this layer and it is required only if such boundaries are shown on the original assessors map. Only Entity Attributes are listed in this metadata. Please see the TaxPar feature class (or MxxxTaxPar.shp) for all other information.
Copyright Text: Please see the TaxPar feature class (or MxxxTaxPar.shp) for all other information.
Name: 2016 Integrated List Data - 305(b)/314/303(d)
Display Field:
Type: Group Layer
Geometry Type: null
Description: <DIV STYLE="text-align:Left;"><DIV><P><SPAN>The 2016 Integrated List of Waters data layer is the spatial representation of the river, lake, and estuary segments assessed and summarized in the Massachusetts Year 2016 Integrated List of Waters report to the EPA developed pursuant to sections 305(b), 314, and 303(d) of the Federal Clean Water Act. The Massachusetts Year 2016 Integrated List of Waters report can be found on the MassDEP website at https://www.mass.gov/lists/integrated-lists-of-waters-related-reports, or by contacting Arthur Johnson (508-767-2873) or Richard Chase (508-767-2859) in the MassDEP, Watershed Planning Program.</SPAN></P></DIV></DIV>
Copyright Text: The MassDEP Division of Watershed Management (DWM), Watershed Planning Program (WPP). For questions regarding the programmatic content of these data contact Arthur Johnson (508-767-2873) or Richard Chase (508-767-2859) in the MassDEP, Watershed Planning Program. For questions relating to GIS and these data, contact Kashif Rashid (617-292-5851) in the MassDEP, GIS Program.
Description: Water Body AUs - Rivers (arcs) River AUs: Individual river AUs are represented as one or more lines in the arc feature class. Linework was derived from the MassGIS 1:25,000 hydrography based on USGS topographic maps. Additional on-screen editing was performed as needed using USGS topographic quadrangles and/or MassGIS color orthophotos as a base map for all river AUs. Lake AUs: Lake AUs are represented as one or more polygons in the polygon feature class. Lake AU polygons were selected from the MassGIS 1:25,000 hydrography layer, where available, and placed in a separate file where additional editing (typically closure lines) may have been performed. In some cases AUs were drawn and/or edited to reflect current conditions using USGS topographic quadrangles, and/or MassGIS color orthophotos as the base map. Estuary AUs: Estuary AUs are represented as polygons. Where available, polygons are derived from the MassGIS 1:25,000 hydrography based on the name and description of each estuarine AU. Additional on-screen digitizing to close polygons to reflect waters actually assessed, but that may not have been represented in the hydrography layer, was completed using the USGS topographic quadrangles as the base map. All AUs (Rivers, Lakes, Estuaries): River, lake, and estuary features, regardless of their derivation, were combined into two single statewide feature classes, one for lines (IL_2016_ARC alias: Water Body AUs - Rivers (arcs)) and one for polygons (IL_2016_POLY alias: Water Body AUs - Lakes, Estuaries (polygons)). There is no AU overlap in any two adjacent river, lake or estuary features. Attributes: Except for standard GIS items (e.g., Shape_Length (meters), Shape_Area (square meters), Shape, OBJECTID, FID), all attributes were obtained from the DWM/WPP and are presented in the table IL_ATTAINS_2016. This table has a many-to-one relationship with individual features in the IL_2016_ARC and IL_2016_POLY features classes. Only attributes that are the same for every record concerning a feature were added to the attribute table of the feature set. A water body AU has only one unique identifier (AU_ID) and description, however, in the ATTAINS table the individual AU information repeats as necessary to accommodate the number of uses assessed, each cause of impairment, and each source for the cause of impairment. The IL_ATTAINS_2016 table can be related to geographic features using the AU_ID. The additional table (IL_SEGDEF_2016) can be used for summarizing data and can be related to geographic features using the AU_ID. Fields in the IL_2016_POLY and IL_2016_ARC attribute tables are as follows:Cycle: Reporting cycle year.WBID_2016: Assessment Unit ID (AU_ID) with the reporting cycle year.Watershed: The MassDEP DWM/WPP watershed delineations are based on the MassGIS Major Basins layer; modified to reflect surface drainage areas for use with the MassDEP Integrated List of Waters report by the WPP. For example, a portion of the Cape Cod Watershed Area was changed to reflect its drainage into Buzzards Bay, resulting in shape changes for both the Cape Cod and Buzzards Bay watershed delineations. In general, the watershed name is based on the Massachusetts Stream and River Inventory System (SARIS) that includes all Massachusetts river basins and coastal drainage areas (Halliwell et al., 1982). The WPP watershed name Boston Harbor (Proper) does not appear in the MassGIS Major Basins layer or the SARIS list of watersheds; it refers to the harbor itself. Three drainage area types are further described in SARIS as follows: River Basin: Major inland river basin. River Basin and Coastal Drainage Area: Major inland river basin coupled with smaller areas draining directly to coastal waters within the general geographic area of the associated river basin. Coastal Drainage Area: Subdivisions of the coastal drainage system that have been partitioned into specific geographic areas. These areas all drain to coastal waters but may have multiple small-scale drainages.Waterbody: Water body names are based on three inventory systems: Stream and River Inventory System (SARIS), Pond and Lake Inventory System (PALIS), or Coastal and Marine Inventory System (CAMIS).AU_ID: Water body Assessment Unit identification code (AU_ID) for the 2016 cycle of the Massachusetts Integrated List of Waters report.Location1: Description of the water body AU.Location2: Continuation of the location description if LOCATION1 exceeds 255 characters.WaterCode: Unique water body code based on SARIS, PALIS, or CAMIS inventory coding systems.WaterType: Water body AU type: River (including streams, brooks, etc.), Lake (including ponds, reservoirs, etc.), or EstuaryAU_Size: Size of the water body AU. (Some historic values in this field may have been based on measurements made with map wheels and other techniques including, but not limited to, planimetry using USGS Quad sheets at a scale of 1:25,000. New values are generated using GIS.) AU_Size is the size reported to the EPA for the AU (portion within the state not necessarily the entire waterbody).Size_Unit: Water body size units: Miles (Rivers), Acres (Lakes), Square Miles (Estuaries)Class: Class assigned to the water body as defined in the Massachusetts Surface Water Quality Standards (314 CMR 4.00) that can be found at https://www.mass.gov/regulations/314-CMR-4-the-massachusetts-surface-water-quality-standards. (Clarification Note: Classification is reflective of version of Standards available at time when assessment decisions were made.)Qualifier: Class qualifiers (e.g., WWF [warm water fishery], CWF [cold water fishery], etc.) assigned to water body as defined in the Massachusetts Surface Water Quality Standards (314 CMR 4.00). (Clarification Note: Classification is reflective of version of Standards available at time when assessment decisions were made.)Category: The category of the water body AU in the Massachusetts Year 2016 Integrated List of Waters report; category descriptions are as follows:Category 1) Unimpaired and not threatened for all designated uses; Category 2) Unimpaired for some uses and not assessed for others; Category 3) Insufficient information to make assessments for any uses; Category 4) Impaired for one or more uses, but not requiring the calculation of a Total Maximum Daily Load (TMDL) Category 4A) Impaired for one or more designated uses but does not require the development of a TMDL: TMDL has been completed. Category 4B) Impaired for one or more designated uses but does not require the development of a TMDL: Other pollution control requirements are reasonably expected to result in the attainment of designated uses. Category 4C) Impaired for one or more designated uses but does not require the development of a TMDL: Impairment is not caused by a pollutant. Category 5) Impaired for one or more uses and requiring a TMDL (impairment due to pollutant(s) such as nutrients, metals, pesticides, solids and pathogens).TMDL_count: The number of unique MassDEP DWM/WPP TMDL reports associated with the AU for the 2016 reporting cycle.
Copyright Text: The MassDEP Division of Watershed Management (DWM), Watershed Planning Program (WPP). For questions regarding the programmatic content of these data contact Arthur Johnson (508-767-2873) or Richard Chase (508-767-2859) in the MassDEP, Watershed Planning Program.
For questions relating to GIS and these data, contact Kashif Rashid (617-292-5851) in the MassDEP, GIS Program.
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Name: Water Body AUs - Lakes, Estuaries (polygons)
Display Field: AU_ID
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: Water Body AUs - Lakes, Estuaries (polygons) ----- River AUs: Individual river AUs are represented as one or more lines in the arc feature class. Linework was derived from the MassGIS 1:25,000 hydrographybased on USGS topographic maps. Additional on-screen editing was performed as needed using USGS topographic quadranglesand/or MassGIS color orthophotosas a base map for all river AUs. Lake AUs: Lake AUs are represented as one or more polygons in the polygon feature class. Lake AU polygons were selected from the MassGIS 1:25,000 hydrographylayer, where available, and placed in a separate file where additional editing (typically closure lines) may have been performed. In some cases AUs were drawn and/or edited to reflect current conditions using USGS topographic quadrangles, and/or MassGIS color orthophotosas the base map. Estuary AUs: Estuary AUs are represented as polygons. Where available, polygons are derived from the MassGIS 1:25,000 hydrographybased on the name and description of each estuarine AU. Additional on-screen digitizing to close polygons to reflect waters actually assessed, but that may not have been represented in the hydrography layer, was completed using the USGS topographic quadranglesas the base map. All AUs (Rivers, Lakes, Estuaries): River, lake, and estuary features, regardless of their derivation, were combined into two single statewide feature classes, one for lines (IL_2016_ARC alias: Water Body AUs - Rivers (arcs)) and one for polygons (IL_2016_POLY alias: Water Body AUs - Lakes, Estuaries (polygons)). There is no AU overlap in any two adjacent river, lake or estuary features.Attributes: Except for standard GIS items (e.g., Shape_Length (meters), Shape_Area (square meters), Shape, OBJECTID, FID), all attributes were obtained from the DWM/WPP and are presented in the table IL_ATTAINS_2016. This table has a many-to-one relationship with individual features in the IL_2016_ARC and IL_2016_POLY features classes. Only attributes that are the same for every record concerning a feature were added to the attribute table of the feature set. A water body AU has only one unique identifier (AU_ID) and description, however, in the ATTAINS table the individual AU information repeats as necessary to accommodate the number of uses assessed, each cause of impairment, and each source for the cause of impairment. The IL_ATTAINS_2016 table can be related to geographic features using the AU_ID. The additional table (IL_SEGDEF_2016) can be used for summarizing data and can be related to geographic features using the AU_ID. Fields in the IL_2016_POLY and IL_2016_ARC attribute tables are as follows:Cycle:Reporting cycle year.WBID_2016: Assessment Unit ID (AU_ID) with the reporting cycle year.Watershed: The MassDEP DWM/WPP watershed delineations are based on the MassGIS Major Basins layer; modified to reflect surface drainage areas for use with the MassDEP Integrated List of Waters report by the WPP. For example, a portion of the Cape Cod Watershed Area was changed to reflect its drainage into Buzzards Bay, resulting in shape changes for both the Cape Cod and Buzzards Bay watershed delineations. In general, the watershed name is based on the Massachusetts Stream and River Inventory System (SARIS) that includes all Massachusetts river basins and coastal drainage areas (Halliwell et al., 1982). The WPP watershed name Boston Harbor (Proper) does not appear in the MassGIS Major Basins layer or the SARIS list of watersheds; it refers to the harbor itself. Three drainage area types are further described in SARIS as follows: River Basin: Major inland river basin. River Basin and Coastal Drainage Area: Major inland river basin coupled with smaller areas draining directly to coastal waters within the general geographic area of the associated river basin. Coastal Drainage Area: Subdivisions of the coastal drainage system that have been partitioned into specific geographic areas. These areas all drain to coastal waters but may have multiple small-scale drainages.Waterbody: Water body names are based on three inventory systems: Stream and River Inventory System (SARIS), Pond and Lake Inventory System (PALIS), or Coastal and Marine Inventory System (CAMIS).AU_ID: Water body Assessment Unit identification code (AU_ID) for the 2016 cycle of the Massachusetts Integrated List of Waters report.Location1: Description of the water body AU.Location2: Continuation of the location description if LOCATION1 exceeds 255 characters.WaterCode: Unique water body code based on SARIS, PALIS, or CAMIS inventory coding systems.WaterType: Water body AU type: River (including streams, brooks, etc.), Lake (including ponds, reservoirs, etc.), or EstuaryAU_Size: Size of the water body AU. (Some historic values in this field may have been based on measurements made with map wheels and other techniques including, but not limited to, planimetry using USGS Quad sheets at a scale of 1:25,000. New values are generated using GIS.) AU_Size is the size reported to the EPA for the AU (portion within the state not necessarily the entire waterbody).Size_Unit: Water body size units: Miles (Rivers), Acres (Lakes), Square Miles (Estuaries)Class: Class assigned to the water body as defined in the Massachusetts Surface Water Quality Standards (314 CMR 4.00) that can be found at https://www.mass.gov/regulations/314-CMR-4-the-massachusetts-surface-water-quality-standards. (Clarification Note: Classification is reflective of version of Standards available at time when assessment decisions were made.)Qualifier: Class qualifiers (e.g., WWF [warm water fishery], CWF [cold water fishery], etc.) assigned to water body as defined in the Massachusetts Surface Water Quality Standards (314 CMR 4.00). (Clarification Note: Classification is reflective of version of Standards available at time when assessment decisions were made.)Category: The category of the water body AU in the Massachusetts Year 2016 Integrated List of Waters report; category descriptions are as follows:Category 1) Unimpaired and not threatened for all designated uses; Category 2) Unimpaired for some uses and not assessed for others; Category 3) Insufficient information to make assessments for any uses; Category 4) Impaired for one or more uses, but not requiring the calculation of a Total Maximum Daily Load (TMDL) Category 4A) Impaired for one or more designated uses but does not require the development of a TMDL: TMDL has been completed. Category 4B) Impaired for one or more designated uses but does not require the development of a TMDL: Other pollution control requirements are reasonably expected to result in the attainment of designated uses. Category 4C) Impaired for one or more designated uses but does not require the development of a TMDL: Impairment is not caused by a pollutant. Category 5) Impaired for one or more uses and requiring a TMDL (impairment due to pollutant(s) such as nutrients, metals, pesticides, solids and pathogens).TMDL_count: The number of unique MassDEP DWM/WPP TMDL reports associated with the AU for the 2016 reporting cycle.
Copyright Text: The MassDEP Division of Watershed Management (DWM), Watershed Planning Program (WPP). For questions regarding the programmatic content of these data contact Arthur Johnson (508-767-2873) or Richard Chase (508-767-2859) in the MassDEP, Watershed Planning Program.
For questions relating to GIS and these data, contact Kashif Rashid (617-292-5851) in the MassDEP, GIS Program.
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Name: DWM WPP Integrated List Watershed Delineations
Display Field:
Type: Group Layer
Geometry Type: null
Description: The MassDEP DWM/WPP watershed delineations are based on the MassGIS Major Basins layer; modified to reflect surface drainage areas for use with the MassDEP Integrated List of Waters report by the WPP. For example, a portion of the Cape Cod Watershed Area was changed to reflect its drainage into Buzzards Bay, resulting in shape changes for both the Cape Cod and Buzzards Bay watershed delineations. In general, the watershed name is based on the Massachusetts Stream and River Inventory System (SARIS) that includes all Massachusetts river basins and coastal drainage areas (Halliwell et al., 1982). The WPP watershed name Boston Harbor (Proper) does not appear in the MassGIS Major Basins layer or the SARIS list of watersheds; it refers to the harbor itself. Three drainage area types are further described in SARIS as follows: River Basin: Major inland river basin. River Basin and Coastal Drainage Area: Major inland river basin coupled with smaller areas draining directly to coastal waters within the general geographic area of the associated river basin. Coastal Drainage Area: Subdivisions of the coastal drainage system that have been partitioned into specific geographic areas. These areas all drain to coastal waters but may have multiple small-scale drainages. Reference: Halliwell, D.B., W.A. Kimball and A.J. Screpetis. 1982. Massachusetts Stream Classification Program Part I: Inventory of Rivers and Streams. Massachusetts Division of Fisheries and Wildlife, Department of Fisheries, Wildlife, and Recreational Vehicles and Massachusetts Division of Water Pollution Control, Department of Environmental Quality Engineering. Westborough, MA.
Copyright Text: The MassDEP Division of Watershed Management (DWM), Watershed Planning Program (WPP). For questions regarding the programmatic content of these data contact Arthur Johnson (508-767-2873) or Richard Chase (508-767-2859) in the MassDEP, Watershed Planning Program. For questions relating to GIS and these data, contact Kashif Rashid (617-292-5851) in the MassDEP, GIS Program.
Description: The MassDEP DWM/WPP watershed delineations are based on the MassGIS Major Basins layer; modified to reflect surface drainage areas for use with the MassDEP Integrated List of Waters report by the WPP. For example, a portion of the Cape Cod Watershed Area was changed to reflect its drainage into Buzzards Bay, resulting in shape changes for both the Cape Cod and Buzzards Bay watershed delineations. In general, the watershed name is based on the Massachusetts Stream and River Inventory System (SARIS) that includes all Massachusetts river basins and coastal drainage areas (Halliwell et al., 1982). The WPP watershed name Boston Harbor (Proper) does not appear in the MassGIS Major Basins layer or the SARIS list of watersheds; it refers to the harbor itself. Three drainage area types are further described in SARIS as follows: River Basin: Major inland river basin. River Basin and Coastal Drainage Area: Major inland river basin coupled with smaller areas draining directly to coastal waters within the general geographic area of the associated river basin. Coastal Drainage Area: Subdivisions of the coastal drainage system that have been partitioned into specific geographic areas. These areas all drain to coastal waters but may have multiple small-scale drainages. Reference: Halliwell, D.B., W.A. Kimball and A.J. Screpetis. 1982. Massachusetts Stream Classification Program Part I: Inventory of Rivers and Streams. Massachusetts Division of Fisheries and Wildlife, Department of Fisheries, Wildlife, and Recreational Vehicles and Massachusetts Division of Water Pollution Control, Department of Environmental Quality Engineering. Westborough, MA.
Copyright Text: The MassDEP Division of Watershed Management (DWM), Watershed Planning Program (WPP). For questions regarding the programmatic content of these data contact Arthur Johnson (508-767-2873) or Richard Chase (508-767-2859) in the MassDEP, Watershed Planning Program.
For questions relating to GIS and these data, contact Kashif Rashid (617-292-5851) in the MassDEP, GIS Program.
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