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Shapefile for Chesapeake Bay - Maryland reserve boundary
data(cbm_spatial)
A SpatialPolygons object
SpatialPolygons
NOAA National Estuarine Research Reserve System (NERRS). System-wide Monitoring Program. Data accessed from the NOAA NERRS Centralized Data Management Office website: http://www.nerrsdata.org/; accessed 08 October 2016