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  1. Title: MassGIS 2003 Massachusetts DEP BWP major facilities (August 2000)

    Contributors:

    Summary: The Massachusetts Department of Environmental Protection (DEP) major facilities datalayer is a statewide point dataset containing the location of a subset of facility types regulated by DEP's Bureau of Waste Prevention (BWP). In a preliminary effort to begin locating facilities regulated by DEP, the BWP chose to locate facility types having the greatest potential environmental significance. At this time, the following facility types have been located: Large Quantity Generators of Hazardous Waste (LQG) Large Quantity Toxic Users (LQTU) Hazardous Waste Recyclers Hazardous Waste Treatment, Storage and/or Disposal Facilities (TSDF) Facilities with Air Operating Permits Facilities with Groundwater Discharge Permits

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  2. Title: MassGIS 2003 Massachusetts Schools (May 2002)

    Contributors:

    Summary: This datalayer shows the location of 1,898 public and 623 private schools, pre-school through high school, in Massachusetts. This data was developed by the Massachusetts Department of Environmental Protection's (DEP) GIS Program based on database information provided by the Massachusetts Department of Education (DOE).

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  3. Title: MassGIS 2003 Massachusetts bicycle trails (January 2003)

    Contributors:

    Summary: This dataset, formerly named 'Rail Trails,' was created by the Massachusetts Department of Environmental Management for the purpose of regional planning and mapping. In 2002 the layer was updated and renamed 'Bicycle Trails'. The linework in this layer represents trails which all permit bicycle travel or corridors with conversion potential; however, bicycles are not the exclusive travel mode permitted on these trails. The manager or owner of the trail should be contacted for detailed information about the permitted uses and rules of conduct that are specific to that trail. Most such corridors use, or connect to, old railway lines. Many of the trails represented in this layer are open to some combination of activities such as walking, jogging, rollerblading, skiing, horse riding, snowmobiling, etc., as well as bicycling.

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  4. Title: Classification of Highways, Merrimack Valley, Massachusetts, 1992 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: Region G (Merrimack Valley and MAPC North) : functional classification of highways / prepared by Massachusetts Department of Public Works, Bureau of Transportation Planning & Development ; adapted from General highway maps, county series ; in cooperation with U.S. Department of Transportation Federal Highway Administration. It was published by the Department of Public Works in 1992, revised from 1977. Scale [ca. 1:63,360]. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Massachusetts State Plane Coordinate System, Mainland Zone (in Feet) (Fipszone 2001). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as roads, railroads, drainage, cities and other human settlements, territorial boundaries, shoreline features, and more. Includes also hand-colored boundaries, legend showing changes in urban area boundaries, and legend showing classification of highways. This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

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  5. Title: Classification of Highways, Plymouth County, Massachusetts, 1992 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: Region J (Old Colony & MAPC South) : functional classification of highways / prepared by Massachusetts Department of Public Works, Bureau of Transportation Planning & Development ; adapted from General highway maps, county series ; in cooperation with U.S. Department of Transportation Federal Highway Administration. It was published by the Department in 1992, revised from 1977. Scale [ca. 1:63,360]. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Massachusetts State Plane Coordinate System, Mainland Zone (in Feet) (Fipszone 2001). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as major roads, railroads, drainage, cities and other human settlements, territorial boundaries, shoreline features, and more. Includes also hand-colored divisions and legend showing highway classification categories.This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

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  6. Title: Hopkinton, Massachusetts, ca. 1970 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: Hopkinton, prepared for the town of Hopkinton by the Massachusetts Department of Community Affairs. It was published by the Deptartment of Community Affairs ca. 1970. Scale ca. 1:19,000. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Massachusetts State Plane Coordinate System, Mainland Zone (in Feet) (Fipszone 2001). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as roads, railroads, drainage, cities and other human settlements, territorial boundaries, shoreline features, and more. Includes also public lands, location map, and magnetic declination diagram. This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

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  7. Title: Index of Aerial Photography, Massachusetts, ca. 1985 (Raster Image)

    Contributors:

    Summary: This layer is a georeferenced raster image of the historic paper map entitled: Index of aerial photography : color infrared photography of the Massachusetts land base / James W. Sewall Company [for] Department of Environmental Management. It was published by Department of Environmental Management ca. 1985. Scale 1:250,000. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Massachusetts State Plane Coordinate System, Mainland Zone (in Feet) (Fipszone 2001). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as roads, state parks, military bases, drainage, cities and other human settlements, territorial boundaries, shoreline features, and more. Relief shown by contours and spot heights. This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

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  8. Title: MassGIS 2003 Massachusetts Interim Wellhead Protection Areas for Community Water Supply (March 2003)

    Contributors:

    Summary: This datalayer contains polygons representing Interim Wellhead Protection Areas (IWPA) for community water supply (IWPACOM) sources as defined by the Massachusetts Department of Environmental Protection. Wellhead protection areas are important for protecting the recharge area around public water supply (PWS) wells. A Zone II is a wellhead protection area that has been determined by hydrogeologic modeling and approved by the Department of Environmental Protection's (DEP) Drinking Water Program (DWP). In cases where hydro-geologic modeling studies have not been performed and there is no approved Zone II, an Interim Wellhead Protection Area (IWPA) is established based on DEP DWP well pumping rates or default values. Certain land uses may be either prohibited or restricted in both approved (Zone II) and interim (IWPA) wellhead protection areas. In the absence of an approved Zone II, DEP has adopted the Interim Wellhead Protection Area (IWPA) as the primary, protected recharge area for PWS groundwater sources. For PWS sources that pump less than 100,000 gallons per day (GPD), the IWPA radius is proportional to the pumping rate in gallons per minute (GPM). Pumping rate is determined by DEP DWP based on one of the following methods, DWP approved pumping rate, metered data or Title 5 flow rate. The formula used for calculating the PWS well point buffer radius in feet is: Radius = ( 32 x pumping rate in GPM ) + 400 The minimum IWPA radius is 400 feet, the maximum (default) radius reached at 100,000 GPD (70 GPM) is 2,640 feet (1/2 mile). In instances where DWP pumping rate information is unavailable DWP approved default radius values are assigned based on PWS well classification. The default radius for community class PWS groundwater sources (GW) is 2,640 feet (804.6 meters). The default radius for non-community sources is 750 feet (228.6 meters) for Non Transient (NTNC) wells and 500 feet (152.4 meters) for Transient (TNC) wells. The DEP GIS Program currently [2003] maintains two statewide IWPA coverages (IWPA and IWPACOM) shared through MassGIS. Both are generated by buffering groundwater sources in the DEP Public Water Supply datalayer (PWS_DEP). The IWPA coverage contains variable width IWPA buffers for BOTH approved community and non community groundwater sources in the DEP PWS datalayer which do not have an approved Zone II. The IWPACOM coverage contains IWPAs ONLY for community PWS sources which do not have an approved Zone II.

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  9. Title: MassGIS 2003 Massachusetts Designated Shellfish Growing Areas (Arcs) (October 2000)

    Contributors:

    Summary: The Designated Shellfish Growing Area (DSGA) datalayer was compiled by the Department of Fisheries, Wildlife and Environmental Law Enforcement's (DFWELE) Division of Marine Fisheries (DMF). Three hundred and three growing areas in Massachusetts have been designated by DMF's Shellfish Project. The data are stored in two feature layers: Designated Shellfish Growing Areas (Arcs) and Designated Shellfish Growing Areas (Polygons). A designated shellfish growing area is an area of potential shellfish habitat, and all three hundred and three DSGA's make up the territorial waters (tidal zone out to the territorial line) of the Commonwealth. Growing areas are managed with respect to shellfish harvest for direct human consumption, and comprise at least one or more classification areas. The classification areas are the management units, and range from being approved to prohibited (six different classification types in all) with respect to shellfish harvest. For example, one growing area may be composed of four classification areas, all of which are managed separately (have a classification type the same or different from the rest in the growing area). This coverage reflects classification areas as of July 1, 2000. The dataset was originally issued in October 2000.

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  10. Title: MassGIS 2003 Massachusetts Interim Wellhead Protection Areas (March 2003)

    Contributors:

    Summary: This datalayer contains polygons representing Interim Wellhead Protection Areas (IWPA) for community and non-community water supply sources as defined by the Massachusetts Department of Environmental Protection. Wellhead protection areas are important for protecting the recharge area around public water supply (PWS) wells. A Zone II is a wellhead protection area that has been determined by hydrogeologic modeling and approved by the Department of Environmental Protection's (DEP) Drinking Water Program (DWP). In cases where hydro-geologic modeling studies have not been performed and there is no approved Zone II, an Interim Wellhead Protection Area (IWPA) is established based on DEP DWP well pumping rates or default values. Certain land uses may be either prohibited or restricted in both approved (Zone II) and interim (IWPA) wellhead protection areas. In the absence of an approved Zone II, DEP has adopted the Interim Wellhead Protection Area (IWPA) as the primary, protected recharge area for PWS groundwater sources. For PWS sources that pump less than 100,000 gallons per day (GPD), the IWPA radius is proportional to the pumping rate in gallons per minute (GPM). Pumping rate is determined by DEP DWP based on one of the following methods, DWP approved pumping rate, metered data or Title 5 flow rate. The formula used for calculating the PWS well point buffer radius in feet is: Radius = ( 32 x pumping rate in GPM ) + 400 The minimum IWPA radius is 400 feet, the maximum (default) radius reached at 100,000 GPD (70 GPM) is 2,640 feet (1/2 mile). In instances where DWP pumping rate information is unavailable DWP approved default radius values are assigned based on PWS well classification. The default radius for community class PWS groundwater sources (GW) is 2,640 feet (804.6 meters). The default radius for non-community sources is 750 feet (228.6 meters) for Non Transient (NTNC) wells and 500 feet (152.4 meters) for Transient (TNC) wells. The DEP GIS Program currently [2003] maintains two statewide IWPA coverages (IWPA and IWPACOM) shared through MassGIS. Both are generated by buffering groundwater sources in the DEP Public Water Supply datalayer (PWS_DEP). The IWPA coverage contains variable width IWPA buffers for BOTH approved community and non-community groundwater sources in the DEP PWS datalayer which do not have an approved Zone II. The IWPACOM coverage contains IWPAs ONLY for community PWS sources which do not have an approved Zone II.

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  11. Title: MassGIS 2003 Massachusetts Drainage Sub-basins (Polygons) (March 2003)

    Contributors:

    Summary: This datalayers contains polygons representing Massachusetts drainage sub-basins (see also the Drainage Sub-basins (Arc) datalayer). MassGIS has produced a statewide digital datalayer of the approximately 2300 sub-basins as defined and used by the USGS Water Resources Division and the Mass Water Resources Commission and as modified by Executive Office of Environmental Affairs (EOEA) agencies. These sub-basins were aggregated together to make the 28 basins of the Major Basins Datalayer. Cape Cod and the Islands do not have much lateral 'surface' drainage because the soils are so porous. The sub-basin line shown for Cape Cod is the approximate groundwater divide between Cape Cod Bay, Vineyard Sound, and the Atlantic Ocean, taken from sub-surface groundwater contours.

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  12. Title: MassGIS 2003 Massachusetts Surface Water Supply Protection Areas (Zone C) (Arcs) (March 2003)

    Contributors:

    Summary: This datalayer consists of arcs representing boundaries of Massachusetts Surface Water Supply Protection Zones (Zone C). (See also the Surface Water Supply Protection Zones (Zone C) (Polygons) and the Surface Water Supply Protection Zones (Zone C) (Region Polygons) datalayers.) Three datalayers (ZONE A, ZONE B, ZONE C) delineate those areas included in 310 CMR 22.00, the Massachusetts Drinking Water Regulations, as Surface Water Supply Protection Zones: ZONE A: represents a) the land area between the surface water source and the upper boundary of the bank; b) the land area within a 400 foot lateral distance from the upper boundary of the bank of a Class A surface water source, as defined in 314 CMR 4.05(3)(a); and c) the land area within a 200 foot lateral distance from the upper boundary of the bank of a tributary or associated surface water body. ZONE B: represents the land area within one-half mile of the upper boundary of the bank of a Class A surface water source, as defined in 314 CMR 4.05(3)(a), or edge of watershed, whichever is less. Zone B always includes the land area within a 400 ft lateral distance from the upper boundary of the bank of the Class A surface water source. ZONE C: represents the land area not designated as Zone A or B within the watershed of a Class A surface water source, as defined in 314 CMR 4.05(3)(a). All known surface water supplies have zones delineated, but some may be covered by other legislation. Areas with a status value of M are included for reference but are not covered by 310 CMR 22.00. Each area is delineated in a separate datalayer, Zone A, Zone B, and Zone C.

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  13. Title: MassGIS 2003 Massachusetts Hydrography (1:25,000) (Arcs) (March 2003)

    Contributors:

    Summary: The MassGIS 1:25,000 Hydrography datalayer represents hydrographic (water-related) features, including surface water (lakes, ponds, reservoirs), wetlands, bogs, flats, rivers, streams, and others (see attributes section below). MassGIS has edited and modified the USGS 1:25,000 Hydrography Digital Line Graph (DLG) quadrangle files and the USGS 1:100,000 Hydrography DLG files and digitized hydrographic features from the USGS 1:25,000 Topographic Quadrangles to produce a hybrid 1:25,000 Massachusetts Hydrography Datalayer. The 1:100,000 DLG features were enhanced by digitizing those streams and ponds from the USGS quadrangles that were not part of the 1:100,000 data. MassGIS has also scanned USGS mylar separates to begin replacing the 1:100,000 enhanced data with 1:25,000 features.

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  14. Title: MassGIS 2003 Massachusetts Approved Wellhead Protection Areas (Zone II) (Arcs) (March 2003)

    Contributors:

    Summary: This datalayer contains polylines representing internal and external boundaries of approved Wellhead Protection (Zone II) Areas for the state of Massachusetts as defined by the Massachusetts Department of Environmental Protection (DEP). Wellhead protection areas are important for protecting the recharge area around public water supply (PWS) wells. A Zone II is a wellhead protection area that has been determined by hydrogeologic modeling and approved by the Department of Environmental Protection's (DEP) Drinking Water Program (DWP). In cases where hydro-geologic modeling studies have not been performed and there is no approved Zone II, an Interim Wellhead Protection Area (IWPA) is established based on DEP DWP well pumping rates or default values. Certain land uses may be either prohibited or restricted in both approved (Zone II) and interim (IWPA) wellhead protection areas. As stated in 310 CMR 22.02, a Zone II is: 'That area of an aquifer which contributes water to a well under the most severe pumping and recharge conditions that can be realistically anticipated (180 days of pumping at safe yield, with no recharge from precipitation). It is bounded by the groundwater divides which result from pumping the well and by the contact of the aquifer with less permeable materials such as till or bedrock. In some cases, streams or lakes may act as recharge boundaries. In all cases, Zone IIs shall extend up gradient to its point of intersection with prevailing hydrogeologic boundaries (a groundwater flow divide, a contact with till or bedrock, or a recharge boundary).' DEP Zone II and Public Water Supply (PWS) data are closely linked, and DEP Zone II data should be used in association with the DEP Public Water Supply datalayer (PWS_DEP). During the approval process each Zone II is assigned a unique ID (ZII-NUM) by DEP DWP. The DEP Public Water Supply and Zone II datalayers use the ZII-NUM to link protected PWS sources to their approved Zone II. Since some PWS sources within a Zone II may not have been used to delineate that Zone II, the ZII-NUM item can be used to identify the specific wells for which a Zone II was delineated. If the DEP Public Water Supply datalayer item ZII-NUM is equal to 0 than that PWS source has no Zone II and should therefore have an Interim Wellhead Protection Area (IWPA).

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  15. Title: MassGIS 2003 Massachusetts Surface Water Supply Protection Areas (Zone B) (Region Polygons) (March 2003)

    Contributors:

    Summary: This datalayer consists of polygons representing Massachusetts Surface Water Supply Protection Zone regions (Zone B). (See also the Surface Water Supply Protection Zones (Zone B) (Polygons) datalayer.) Three datalayers (ZONE A, ZONE B, ZONE C) delineate those areas included in 310 CMR 22.00, the Massachusetts Drinking Water Regulations, as Surface Water Supply Protection Zones: ZONE A: represents a) the land area between the surface water source and the upper boundary of the bank; b) the land area within a 400 foot lateral distance from the upper boundary of the bank of a Class A surface water source, as defined in 314 CMR 4.05(3)(a); and c) the land area within a 200 foot lateral distance from the upper boundary of the bank of a tributary or associated surface water body. ZONE B: represents the land area within one-half mile of the upper boundary of the bank of a Class A surface water source, as defined in 314 CMR 4.05(3)(a), or edge of watershed, whichever is less. Zone B always includes the land area within a 400 ft lateral distance from the upper boundary of the bank of the Class A surface water source. ZONE C: represents the land area not designated as Zone A or B within the watershed of a Class A surface water source, as defined in 314 CMR 4.05(3)(a). All known surface water supplies have zones delineated, but some may be covered by other legislation. Areas with a status value of M are included for reference but are not covered by 310 CMR 22.00. Each area is delineated in a separate datalayer, Zone A, Zone B, and Zone C.

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  16. Title: MassGIS 2003 Massachusetts Geographic Place Names : Hypsographic Features (March 2003)

    Contributors:

    Summary: This point datalayer represents place names for hypsographic features in the state of Massachusetts (March 2003), which may be used for map labels. The Massachusetts Department of Environmental Protection (DEP) GIS Group and MassGIS maintain the data. Geographic Place Names for the state are grouped into 3 separate datalayers: Hydrographic Features - lakes, ponds, streams, rivers, bays, harbors, channels Civic Features - city and town names, sections, villages Hypsographic Features - hills, mountains, points, beaches, islands

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  17. Title: MassGIS 2003 Massachusetts Approved Wellhead Protection Areas (Zone II) (Region Polygons) (March 2003)

    Contributors:

    Summary: This datalayer contains polygons representing approved Wellhead Protection (Zone II) Area regions for the state of Massachusetts as defined by the Massachusetts Department of Environmental Protection (DEP). Because wells tend to be clustered by the nature of the resource they tap, the Zone IIs protecting those wells will frequently overlap. As a result of this overlap, intersecting Zone IIs are composed of multiple polygons and more than one Zone II can share an individual polygon. The regions data model represents complex area features and supports overlapping or non-contiguous areas. The Zone II data layer uses the regions feature class and topological structure to manage polygonal overlap, by combining all the polygons a Zone II comprises into a single region feature subclass (see the Approved Wellhead Protection Areas (Zone II) (Polygons) layer for component polygons) . Wellhead protection areas are important for protecting the recharge area around public water supply (PWS) wells. A Zone II is a wellhead protection area that has been determined by hydrogeologic modeling and approved by the Department of Environmental Protection's (DEP) Drinking Water Program (DWP). In cases where hydro-geologic modeling studies have not been performed and there is no approved Zone II, an Interim Wellhead Protection Area (IWPA) is established based on DEP DWP well pumping rates or default values. Certain land uses may be either prohibited or restricted in both approved (Zone II) and interim (IWPA) wellhead protection areas. As stated in 310 CMR 22.02, a Zone II is: 'That area of an aquifer which contributes water to a well under the most severe pumping and recharge conditions that can be realistically anticipated (180 days of pumping at safe yield, with no recharge from precipitation). It is bounded by the groundwater divides which result from pumping the well and by the contact of the aquifer with less permeable materials such as till or bedrock. In some cases, streams or lakes may act as recharge boundaries. In all cases, Zone IIs shall extend up gradient to its point of intersection with prevailing hydrogeologic boundaries (a groundwater flow divide, a contact with till or bedrock , or a recharge boundary).' DEP Zone II and Public Water Supply (PWS) data are closely linked, and DEP Zone II data should be used in association with the DEP Public Water Supply datalayer (PWS_DEP). During the approval process each Zone II is assigned a unique ID (ZII-NUM) by DEP DWP. The DEP Public Water Supply and Zone II datalayers use the ZII-NUM to link protected PWS sources to their approved Zone II. Since some PWS sources within a Zone II may not have been used to delineate that Zone II, the ZII-NUM item can be used to identify the specific wells for which a Zone II was delineated. If the DEP Public Water Supply datalayer item ZII-NUM is equal to 0 than that PWS source has no Zone II and should therefore have an Interim Wellhead Protection Area (IWPA).

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  18. Title: MassGIS 2003 Massachusetts Geographic Place Names : Hydrographic Features (March 2003)

    Contributors:

    Summary: This point datalayer represents place names for hydrographic features in the state of Massachusetts (March 2003), which may be used for map labels. The Massachusetts Department of Environmental Protection (DEP) GIS Group and MassGIS maintain the data. Geographic Place Names for the state are grouped into 3 separate datalayers: Hydrographic Features - lakes, ponds, streams, rivers, bays, harbors, channels Civic Features - city and town names, sections, villages Hypsographic Features - hills, mountains, points, beaches, islands

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  19. Title: MassGIS 2003 Massachusetts Surface Water Supply Protection Areas (Zone C) (Region Polygons) (March 2003)

    Contributors:

    Summary: This datalayer consists of polygons representing Massachusetts Surface Water Supply Protection Zone regions (Zone C). (See also the Surface Water Supply Protection Zones (Zone C) (Polygons) and the Surface Water Supply Protection Zones (Zone C) (Arcs) datalayers.) Three datalayers (ZONE A, ZONE B, ZONE C) delineate those areas included in 310 CMR 22.00, the Massachusetts Drinking Water Regulations, as Surface Water Supply Protection Zones: ZONE A: represents a) the land area between the surface water source and the upper boundary of the bank; b) the land area within a 400 foot lateral distance from the upper boundary of the bank of a Class A surface water source, as defined in 314 CMR 4.05(3)(a); and c) the land area within a 200 foot lateral distance from the upper boundary of the bank of a tributary or associated surface water body. ZONE B: represents the land area within one-half mile of the upper boundary of the bank of a Class A surface water source, as defined in 314 CMR 4.05(3)(a), or edge of watershed, whichever is less. Zone B always includes the land area within a 400 ft lateral distance from the upper boundary of the bank of the Class A surface water source. ZONE C: represents the land area not designated as Zone A or B within the watershed of a Class A surface water source, as defined in 314 CMR 4.05(3)(a). All known surface water supplies have zones delineated, but some may be covered by other legislation. Areas with a status value of M are included for reference but are not covered by 310 CMR 22.00. Each area is delineated in a separate datalayer, Zone A, Zone B, and Zone C.

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  20. Title: MassGIS 2003 Massachusetts Surface Water Supply Protection Areas (Zone B) (Polygons) (March 2003)

    Contributors:

    Summary: This datalayer consists of polygons representing Massachusetts Surface Water Supply Protection Zones (Zone B). (See also the Surface Water Supply Protection Zones (Zone B) (Region Polygons) datalayer.) Three datalayers (ZONE A, ZONE B, ZONE C) delineate those areas included in 310 CMR 22.00, the Massachusetts Drinking Water Regulations, as Surface Water Supply Protection Zones: ZONE A: represents a) the land area between the surface water source and the upper boundary of the bank; b) the land area within a 400 foot lateral distance from the upper boundary of the bank of a Class A surface water source, as defined in 314 CMR 4.05(3)(a); and c) the land area within a 200 foot lateral distance from the upper boundary of the bank of a tributary or associated surface water body. ZONE B: represents the land area within one-half mile of the upper boundary of the bank of a Class A surface water source, as defined in 314 CMR 4.05(3)(a), or edge of watershed, whichever is less. Zone B always includes the land area within a 400 ft lateral distance from the upper boundary of the bank of the Class A surface water source. ZONE C: represents the land area not designated as Zone A or B within the watershed of a Class A surface water source, as defined in 314 CMR 4.05(3)(a). All known surface water supplies have zones delineated, but some may be covered by other legislation. Areas with a status value of M are included for reference but are not covered by 310 CMR 22.00. Each area is delineated in a separate datalayer, Zone A, Zone B, and Zone C.

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