USDA-Farm Services Agency Aerial Photography Field Office 2006 remote-sensing image Helena, MT Montana State Library https://ftpgeoinfo.msl.mt.gov/Data/Spatial/MSDI/Imagery/2005_NAIP/UTM_County_Mosaics http://mslapps.mt.gov/Geographic_Information/Data/DataList/datalist_Details.aspx?did={1d1e52f1-0cfa-47bb-9674-570cf5cfaa19} These data are compressed county or half-county mosaics of digital, natural-color aerial photographs of Montana taken during the year 2005. The imagery has a 1 meter ground sample distance and are orthorectified to National Mapping Standards at the 1:24,000 scale. The imagery is formatted to the UTM coordinate system using NAD83. The files were generated by compressing quarter quadrangle tiles that cover a county or half of a county to one fifteenth of their storage size with MrSID software. An Esri shapefile showing the dates of the aerial photos is available at https://ftpgeoinfo.msl.mt.gov/Data/Spatial/MSDI/Imagery/2005_NAIP/naip_2005_color_dates.zip Each county mosaic is several gigabytes in size and contains large no-data areas for regions inside each county's bounding rectangle but outside the county boundary. The data are also available as non-overlapping 12-kilometer tiles and as a web service. A false color infrared version of the data is available. Please see http://geoinfo.msl.mt.gov/data/Aerial_Photos/NAIP_2005 for access to these alternate forms of the data. These data sets contains digital ortho-imagery developed to support planning and delivery of USDA programs. The USDA field service centers use digital ortho imagery as a basic reference for conservation plans and soil survey. 20050701 20050920 ground condition -116.125 -104.000 49.000 44.250 ISO 19115 Topic Category imageryBaseMapsEarthCover Digital Georectified Image Georectified imagery Georectification MrSID NAIP DOQQ Digital orthophoto quarter quadrangle Aerial Photography Air Photo Orthophotography MT Montana None The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time. USDA-Farm Services Agency Aerial Photography Field Office mailing and physical address

2222 West 2300 South

Salt Lake City Utah 84119-2020 800-973-3500 801-975-3529 http://docs.msl.mt.gov/geoinfo/Images/Metadata/naip_2005.jpg Small sample showing image quality and resolution https://ftpgeoinfo.msl.mt.gov/Documents/Maps/Individual/20050101_138_2005_Color_Dates.gif Map of Montana showing photography dates http://docs.msl.mt.gov/geoinfo/Images/Metadata/naip_ccm_1.jpg Sample showing overlap of no-data areas with adjacent county mosaics http://docs.msl.mt.gov/geoinfo/Images/Metadata/naip_ccm_2.jpg Sample showing seamlines between adjacent county mosaics after black pixels have been rendered transparent MrSID Generation 3 There is an 18,000 acre area in Gallatin County east of Bozeman for which there is no data. There is a 16,000 acre area in T18N R7W in northern Lewis and Clark County that is covered by the wrong imagery. There are many areas along the International Boundary where the data stops approximately 100 meters south of the boundary. Farm Services Agency Digital Orthophoto Specs. The specified accuracy for 1-meter imagery such as this is 5 meters. Aerial Photography Field Office 20060201 40000 2005 Majority Aerial Photography Date MrSID compressed image Mosaicked County Image Imagery was flown with Leica ADS40 digital sensors to capture 0.9m raw data. Raw data is then downloaded using Leica GPro software into 12 bit TIFF format. The raw TIFF imagery is then georeferenced and reprojected using GPS/INS 200Hz exterior orientation information (x/y/z/o/p/k) to allow stereo viewable imagery. This stereo viewable imagery is processed with the GPro/LPS automatic point matching algorithm to determine common match points every 2000 pixels across the imagery strip and 333 pixels along strip. This pattern includes dual rows of line ties to the adjacent line of imagery. The resulting point data is imported in Leica ORIMA and used to perform a full bundle adjustment of the imagery point data. Any blunders are removed, and weak areas are manually supplemented to ensure good coverage of points. Once the point data is cleaned and point coverage is acceptable vertical control points from the prior generation MDOQQ's are introduced in the corners and center of the block being adjusted. This control is used to perform any datum shift (x/y/z and rotation) to ensure the new adjusted imagery fits the existing MDOQQ reference imagery. The output from this bundle adjustment process is revised exterior orientation data for the sensor with any GPS/INS, datum, and sensor calibration errors modeled and compensated for. Using this revised EO data orthorectified image strips are created using the USGS DEM. The 10m DEM is used where available and 30m DEM is used elsewhere. The orthorectified strips are overlaid over the existing MDOQQ compressed files to ensure accuracy is met by a visual inspection and manually measuring features. Once the accuracy of the orthorectified image strips are validated the strips are processed with a NWG proprietary dodging package that compensates for the bi-directional reflectance function that is caused by the sun's position relative to the image area. This compensated imagery is then imported into Inpho's OrthoVista 4.0 package which is used for the final radiometric balance, mosaic, and DOQQ sheet creation. These final DOQQ sheets contain a 300m minimum buffer. These final DOQQ tiles are edge inspected to the existing MDOQQ sheets for accuracy validation. The final DOQQ tiles are then organized into directories based on the USDA provided county lists. A visual inspection is performed of the entire county to ensure all tiles are present and the radiometric quality of the county looks good. If the radiometric quality is acceptable the county is compressed to MG3 format using Lizard Tech's GeoExpress v5.0 with a compression factor of 15 and 9 overview levels. Once this compression is complete manual reviewing is performed to ensure satisfactory results. The associated CCM shapefile is created using ESRI ArcView 9.0 with the latest service packs. 20060201 Universal Transverse Mercator 11, 12, or 13 row and column 1 1 meters North American Datum of 1983 Geodetic Reference System 80 6378137 298.257 Montana State Library mailing address

PO Box 201800

Helena Montana 59620-1800 406-444-5354 Montana Relay 711 406-444-0266 geoinfo@mt.gov Downloadable Data The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time. MrSID https://ftpgeoinfo.msl.mt.gov/Data/Spatial/MSDI/Imagery/2005_NAIP/UTM_County_Mosaics 20160308 USDA-Farm Services Agency Aerial Photography Field Office mailing and physical address

2222 West 2300 South

Salt Lake City Utah 84119-2020 801-975-3500 Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 {B67CA69C-1962-4A21-A9F4-67E5F135CD42}