2018 NOAA NGS Ortho-rectified 4 band Mosaic of Lexington Park, MD

This orthoimagery data set includes 30-cm 8-bit 4-band (RGBNIR) digital orthomosaics in GeoTIFF format. Geographic Extent: A multipart AOI covering approximately 463 total square miles of Maryland and Virginia along the coastline of the Chesapeake Bay. Dataset Description: The NOAA Chesapeake Bay Topobathy 2018 Orthoimagery Project called for the planning, acquisition, processing, and derivative products of imagery data to be collected at a ground sample distance (GSD) of 30 centimeters. Project specifications are based on the American Society of Photogrammetry and Remote Sensing (ASPRS) standards. The data were developed based on a horizontal projection/datum of NAD83 (2011), UTM Zone 18N, Meters. Imagery data were formatted to 325 individual 3,000-meter x 3,000-meter orthomosaic tiles and 539 uncompressed stereo images. Ground Conditions: Imagery was collected in spring and summer of 2018, while no snow was on the ground and rivers were at or below normal levels.