The MVC Protected and Recreational OpenSpace data comprise a set of related data layers that represent parklands, forests, golf courses, playgrounds, wildlife sanctuaries, conservation lands, water supply areas, cemeteries, school ball fields, and other open land that may be classified as protected and/or recreational in use. Not all lands in this layer are protected in perpetuity, though nearly all have at least some level of protection. The layer includes lands owned by the state, cities and towns, federal agencies, and private and non-profit entities. The following types of land are included in this polygon datalayer: - conservation land - habitat protection with minimal recreation, such as walking trails - recreation land - outdoor facilities such as town parks, commons, playing fields, school fields, golf courses, bike paths, scout camps, and fish and game clubs. These may be privately or publicly owned facilities. - town forests - parkways - green buffers along roads, if they are a recognized conservation resource - agricultural land - land protected under an Agricultural Preservation Restriction (APR) and administered by the state Department of Agricultural Resources (DAR, formerly the Dept. of Food and Agriculture (DFA)) - aquifer protection land - not zoning overlay districts - watershed protection land - not zoning overlay districts - cemeteries - if a recognized conservation or recreation resource - forest land -- if designated as a Forest Legacy Area
Planning and analysis
publication date
These data are very useful for most statewide and regional planning purposes. However, they are not a legal record of ownership, and the user should understand that parcel representations are generally not based on property surveys. MVC is not responsible for how these data are used or interpreted by the end user.
33 New York Ave
PO Box 1447
Martha's Vineyard Commission with the assistance the Martha's Vineyard Island Conservation Consortium and Island Town's Conservation Commissions.
OpenSpace attribute information comes from a variety of sources. The MVC diligently strives to have this data current and accurate and the data are always under review and information is updated as errors & omissions are identified.
OpenSpace delineation is parcel based. The source of the parcel data for each open space property is identified in the attribute table. Some open space areas or sub-sections of parcels and those areas have been approximated from hard copy plans and then transfered to digital via on-screen digitizing. See attribute data for respective info.
Data are collected and compiled in many ways, including on-screen digitzing by comparing a site plan to the digital parcel boundaries or, where applicable, extracting an entire parcel boundary from the digital parcel file.
Dataset copied.
Dataset copied.
Primary key comprising TOWN_ID and POLY_ID
Internal feature number.
ESRI
Official municipality ID designated by Secretary of State (1-351).
Unique ID within each municipality; combined with TOWN_ID for OS_ID
Main site name.
Owner of the land represetned by the polygon
The link to the OSNAMES table. A simple and unique abbreviation for some of the lengthier names in the field.
Category for the fee owner’s status
Entity with day-to-day care of the site (only if different from FEE_OWNER)
Abbreviation of enitity with day to day management responsibilities for the site
Category of enitity with day to day management responsibilities for the site
Primary purpose - Code for why the land was protected/improved
Public access - Legal (not physical) level of public access to the land
Level of protection
Enterprise(s) holding a legal interest in this land
Abbreviation for OLI_1_ORG
Category for the interest holder’s status
The type of interest held by OLI_1_ORG
Enterprise(s) holding a second legal interest in this land
Abbreviation for OLI_2_ORG
Category for the second interest holder’s status
The type of interest held by OLI_2_ORG
Enterprise(s) holding a third legal interest in this land
Abbreviation for OLI_3_ORG
Category for the third interest holder’s status
The type of interest held by OLI_3_ORG
Grant program (1) used to acquire/improve land
Category for the grant 1 status
Grant program (2) used to acquire/improve land
Category for the grant 2 status
Project (1) identifier for the parcel; may include many parcels under a single project (EOEEA legal interests only)
Project (2) identifier for the parcel; may include many parcels under a single project (EOEEA legal interests only)
Project (3) identifier for the parcel; may include many parcels under a single project (EOEEA legal interests only)
Indicates the category of funding the parcel received from EOEA sources
Yes/No. Is the parcel protected under article 97 of the Massachusetts Constitution?
Fiscal year project was completed (EOEEA use only)
Funding of parcel acquisition/protection (EOEEA use only)
GIS-calculated acreage of parcel
Calendar date deed was recorded. If only year is known, it is set to January 1st of that year.
Acreage according to the recorded deed
The number of the book the deed for this parcel and/or interest was recorded in at the local registry of deeds
The starting page of the above recorded deed
Acreage according to the local assessor maps or database
Tax map identifier text as determined by the Assessor
Tax map block identifier as determined by the Assessor
Tax map lot identifier as determined by the Assessor
Tax map sublot identifier as determined by the Assessor
A second name associated with the parcel, if any (e.g. No Town State Forest)
Date of last attribute edit
MassGIS base map number (Legacy field from initial data collection effort (1993-1997))
Code linking to the Source Map Worksheet delineating the specifications of the map that the polygon information was taken from. (Legacy field from initial data collection effort (1993-1997))
Text code indicating what the source data was to give a better estimation of the quality of the polygon attributes. This will be used for the entire polygon. For more specific source information on the arcs bounding the polygon, see the OPENSPACE_ARC feature class.
Comments field
Link to MassGIS standard parcel data (MA SPC NAD83 Meters coordinates of the centroid of the parcel)
7-digit integer for linking to the DCAM data tables via the ARC_ID field
Used for symbolization of ownership
Feature geometry.
ESRI
Feature geometry.
ESRI
area in square meters
MVC
perimeter in meters
MVC
Used for symbolization of owner category / state agency
ESRI
Length of feature in internal units.
ESRI
Area of feature in internal units squared.
ESRI
parcel ID number from source parcel file
MVC
unique property ID number per conservation group
ESRI
33 New York Ave
PO Box 1447
MVC is not responsible for how these data are used or interpreted by the end user.
To order, contact Chris Seidel at seidel@mvcommission.org
Please contact MVC to obtain a copy of this data.
33 New York Ave
Suite 500
PO Box 1447