USDA-FSA-APFO Aerial Photography Field Office 20040312 remote-sensing image Salt Lake City, Utah USDA-FSA-APFO Aerial Photography Field Office This data set contains imagery from the National Agriculture Imagery Program (NAIP). NAIP acquires digital ortho imagery during the agricultural growing seasons in the continental U.S.. A primary goal of the NAIP program is to enable availability of of ortho imagery within one year of acquisition. NAIP provides four main products: 1 meter ground sample distance (GSD) ortho imagery rectified to a horizontal accuracy of within +/- 5 meters of reference digital ortho quarter quads (DOQQ's) from the National Digital Ortho Program (NDOP); 2 meter GSD ortho imagery rectified to within +/- 10 meters of reference DOQQs; 1 meter GSD ortho imagery rectified to within +/- 6 meters to true ground; and, 2 meter GSD ortho imagery rectified to within +/- 10 meters to true ground. The tiling format of NAIP imagery is based on a 3.75' x 3.75' quarter quadrangle with a 300 meter buffer on all four sides. NAIP quarter quads are formatted to the UTM coordinate system using NAD83. NAIP imagery may contain as much as 10% cloud cover per tile. NAIP imagery is available for distribution within 60 days of the end of a flying season and is intended to provide current information of agricultural conditions in support of USDA farm programs. For USDA Farm Service Agency, the 1 meter GSD product provides an ortho image base for Common Land Unit boundaries and other data sets. The 1 meter NAIP imagery is generally acquired in projects covering full states in cooperation with state government and other federal agencies who use the imagery for a variety of purposes including land use planning and natural resource assessment. With an annual cycle, NAIP is also used for disaster response often providing the most current pre-event imagery. While suitable for a variety of uses the 2 meter GSD NAIP imagery is primarily intended to assess crop condition and compliance to USDA farm program conditions. The 2 meter imagery is generally acquired only for agricultural areas within state projects. 20030604 Ground Condition Complete Irregular -111.6250 -111.5625 43.0000 42.9375 None farming Digital Ortho rectified Image Ortho Rectification Quarter Quadrangle Centered NAIP Aerial Compliance Compliance Geographic Names Information System ID Caribou 16029 ID029 CARIBOU CO ID FSA 4211104 HENRY, NW HENRY There are no limitations for access. Imagery may be replaced to address defects found in a small number of products through quality assurance processes. Imagery containing defects that require the acquisition of new imagery, such as excessive cloud cover, specular reflectance, etc., will not be replaced within a NAIP project year. Aerial Photography Field Office (APFO) mailing and physical address

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Salt Lake City Utah 84119-2020 USA 801-844-2922 801-956-3653 apfo.sales@slc.usda.gov None None None Dell CPU ImageStation ISAT IRASC & BaseRectifier NAIP 3.75 minute tile file names are based on the USGS quadrangle naming convention. None FSA Digital Orthophoto Specs. USDA-FSA-APFO Aerial Photography Field Office 20040312 remote-sensing image Digital Linear Tape (DLT) 20030604 Aerial Photography Date for Roll No. 06011 Exp. No. 211 Georectifed Image Digital Georectifed Image. Color positive film (Kodak 2427) is scanned using Z/I PhotoScan photogrammetric quality scanning machines at a resolution of 21 microns. The scanned digital imagery is used in the Aerial Triangulation (AT) process in preparation for ortho-rectification. The horizontal accuracy of the orthorectified imagery is primarily determined by the quality of the AT solution and the surface model (digital elevation model or DEM). The AT process is initiated with the population of Z/I project files with ABGPS and horizontal control picked from USDA furnished mosaicked DOQQs (mDOQQs) and vertical control picked from the USGS DTED 2 DEM data. Images are tied together using Z/I ISAT automatic image correlation software with supplemental manually read points using Z/I ISDM software. Upon completion of mensuration, a preliminary adjustment is run to check for image blunders and poor image ties using PATB-NT software. Tie points are corrected or added, ground control is measured and the adjustment is run with ABGPS data and ground control. Withholding select ground control points performs quality control of the adjustment. AT is finalized by densifying the control and generating relative and absolute orientations (RO and AO) for each frame of photography. Orthorectifications are performed on the core portion of each image to minimize the radial horizontal displacement away from the photocenter. Each DOQQ is inspected for relative horizontal accuracy with adjacent DOQQ tiles. A sample of DOQQs is inspected for relative horizontal accuracy with the USDA furnished mDOQQs. Completed and approved DOQQs are assembled into a countywide MrSID file, using a compression factor of 1:50. 20040312 Caribou County, ID Raster Pixel 7696 5865 Universal Transverse Mercator 12 0.9996 -111.0 0.0 500000 0.0 row and column 1 1 meters North American Datum of 1983 Geodetic Reference System 80 (GRS 80) 6378137 298.257 24-bit pixels, 3 band color(RGB) values 0 - 255 None Supervisor Customer Services Section USDA-FSA-APFO Aerial Photography Field Office mailing and physical address

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Salt Lake City Utah 84119-2020 USA 801-844-2922 801-956-3653 apfo.sales@slc.usda.gov n_4211104_nw_12_1_20030604_20040225.tif In no event shall the creators, custodians, or distributors of this information be liable for any damages arising out of its use (or the inability to use it). GeoTIFF - Georeferenced Tagged Image File Format Natural Color CD-ROM ISO 9660 Mode 1 Level 2 Extensions Contact the Aerial Photography Field Office for more information 20040312 USDA-FSA-APFO Aerial Photography Field Office mailing and physical address

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Salt Lake City Utah 84119-2020 USA 801-844-2922 Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998