|Date(s):||Coverage Availability/Geographic Extent:||Footprint:||Source(s):|
|2002||Corpus Christi Bay||1/4 USGS Quadrangle||USGS|
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Orthoimagery - Regional
|Available Formats:||GeoTiff, JPEG 2000|
The National Aerial Photography Program (NAPP) was coordinated by the USGS as an interagency project to acquire cloud-free aerial photographs at an altitude of 20,000 feet above mean terrain elevation. The photographs were taken with a 6-inch focal length lens and are at a scale of 1:40,000. Coverage over the conterminous United States includes both black-and-white (BW) and color infrared (CIR) aerial photographs.
Film type and extent of coverage were determined by available funds and operational requirements. The NAPP program, which was operational from 1987 to 2007, consists of more than 1.3 million images. Photographs were acquired on 9-inch film and were centered over quarters of USGS 7.5-minute quadrangles.