This polygon shapefile depicts the Midpeninsula Regional Open Space District preserve in the County of San Mateo, California. This data includes areas that are not open to the public and classifies access by Open, Closed and Permit Only. The Midpeninsula Regional Open Space District is a regional greenbelt system comprised of over 60,000 acres of land in 26 open space protected preserves. This layer is part of a collection of GIS data for San Mateo County, California. This coverage can be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analyses of geospatial data. County of San Mateo Information Services Department. (2015). Open Space Preserve Boundaries: San Mateo County, California, 2015. San Mateo County. Available at: http://purl.stanford.edu/mv038cy9462 The County of San Mateo cannot vouch for the data or analyses derived from these data. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.