DTM Consulting, Inc. 20060316 remote-sensing image Helena, Montana Montana State Library ftp://ftp.geoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Collections/Yellowstone_River_Clearinghouse/Imagery/1976/ Aerial photo mosaics of the Yellowstone River corridor. Images are from 1976, in MrSID format. These images range in size from 12 to 55 megabytes. These images were georeferenced to 1995 U.S. Geological Survey Digital Orthophoto Quadrangles. Positional accuracy was targeted on the river corridor. Little effort was made to reference the upland areas in regions of high relief. In general, there is one image for each county, from Sweet Grass to Dawson. Yellowstone County is divided into 5 images. Yellowstone1 covers the Laurel/Yegen area. Yellowstone2 covers the area around Billings. Yellowstone3 covers the area around Huntley. Yellowstone4 covers the area around Ballantine and Pompey's Pillar. Yellowstone5 covers the area around Custer. Some older GIS applications may need .sdw files to accompany these files for georeferencing information. ESRI's ArcMap needs .aux files to read the coordinate system of the images from. These files may be accessed at ftp://ftp.geoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Collections/Yellowstone_River_Clearinghouse/Imagery/1976/aux_and_sdw.zip. Developed as part of the Yellowstone River Cummulative Effects Study. Imagery is intended for reach level analysis of changes in the Yellowstone River Corridor. 1976 ground condition Complete None planned -110.25 -104.42 47.33 45.54 ISO 19115 Topic Category imageryBaseMapsEarthCover Historic Imagery Yellowstone River Montana 1976 Yellowstone River 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. Jim Robinson Montana DNRC mailing address

P.O. Box 201601

Helena Montana 59620-1601 USA (406) 444-4247 jrobinson@mt.gov Prepared by DTM Consulting, Inc., Bozeman, MT. Individual images were georeferenced to 1995 DOQs at a scale of approximately 1:6,000. Number of registration points varied depending on the ammount of distortion in the original photograph. Positional accuracy targeted the river corridor. Little effort was made to reference the upland areas in regions of high relief. U.S. Army Corps of Engineers 1976 ground condition Original scans were recieved by DTM Consulting from the U.S. Army Corps of Engineers on two different external hard drives. ENVI was used to georeference individual images to match 1995 DOQs. Control points focused on the river corridor. When the georeferencing closely matched unchaged areas in the DOQs, the image was rectified and saved as a new TIF image with referencing information. Edge matching between overlapping images was performed so that the 'top' image represented the best georeferencing. The images for each county were mosiaced using ENVI. 2005 DTM Consulting, Inc. Tony Thatcher 406-585-5322 tony@dtmgis.com The mosaic images provided by DTM Consulting to the State Library were converted to MrSID format. 20060315 State Plane Coordinate System 2500 45.000000 49.000000 -109.500000 44.250000 600000.000000 0.000000 row and column 1 1 meters North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 Montana State Library mailing address

PO Box 201800

Helena MT 59620-1800 406-444-5354 406-444-4799 406-444-0266 geoinfo@mt.gov 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. Downloadable Data MrSID ftp://ftp.geoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Collections/Yellowstone_River_Clearinghouse/Imagery/1976/ 20131029 20130723 20130417 20060417 Montana State Library mailing address

PO Box 201800

Helena Montana 59620-1800 USA 406-444-5354 406-444-4799 406-444-0266 geoinfo@mt.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 {B5C2C78B-8C9C-4B94-97C8-DDB29552585A}