This data set consists of digital orthophoto images obtained from 1:20,000 scale black-and-white aerial photography aquired in the spring of 2000. The orthophoto files are prepared at two different scales: 1""=400' and 1""=200'. Each 400-scale image nominally covers four U.S. Public Land Survey System sections, for a total of 148 digital image files in the 400-scale data set. The pixel resolution of the 400-scale imagery is two feet on the ground, and the files contain overlap between images. Each 200-scale image covers a USPLSS Survey Township, for a total of 16 images in the 200-scale data set. The pixel resolution of the 200-scale imagery is one foot on the ground, again with overlap between images. The 1"=400 scale orthophoto files are in GeoTIFF format with accompanying ""world"" (tfw) files, and the 1"=200' scale orthophoto files are in MrSID compressed format with the accompanying sid "world" (sdw) files.
This dataset was automatically cataloged from the author's Open Data Portal. In some cases, publication year and bounding coordinates shown here may be incorrect. Please check the 'More details at' link for additional information including download options.