Office of Natural Lands ManagementThrough its Natural Heritage Database, the Office of Natural Lands Management (ONLM) documents rare plant species and rare ecological community habitat to inform decision-makers who need to address the conservation of natural resources. The Natural Heritage Grid Map is a geographic information system (GIS) file that provides a general portrayal of the geographic locations of rare plant species and rare ecological communities for the entire state without providing sensitive detailed information. It does not contain data for animal species. The Natural Heritage Grid Map was produced using computer-generated vector-based polygons that divide the boundary lines of each USGS 1:24,000 scale topographic map into 100 grid cells, each cell being between 358 and 372 acres in size. If a rare plant species or ecological community has been documented from anywhere within a cell, the entire cell will be coded as containing an occurrence of a rare plant species/ecological community. An associated data table can be linked or related to the NHPGRID table in order to display information about the individual rare plant species/ecological community occurrences within any cell.ArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/b00b22666a44445c90e73af6fd39f152_1engNew Jersey Department of Environmental Protection's (NJDEP) Bureau of GISPublicNatural Heritage Grid Map for New Jersey [New Jersey]Web servicesNew JerseyLast Modified: 2023-12-27