U.S. Army Corps of Engineers 20130226 remote-sensing image Helena, MT Montana State Library https://ftpgeoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Collections/Yellowstone_River_Clearinghouse/Imagery/2011/ http://mslapps.mt.gov/Geographic_Information/Data/DataList/datalist_Details.aspx?did={4691733a-ab8a-11e3-9be7-425861b86ab6} Imagery and LiDAR data acquisition by a contract with Woolpert, is in response to the flood of 2011. This task consists of color digital aerial imagery acquisition and color digital orthophoto production at 1.0 foot ground sample distance (GSD) over approximately twelve hundred twenty (1220) square-miles along the Yellowstone River and Lidar acquisition over approximately four hundred forty-two square miles along the Yellowstone River. The general purpose of the imagery collection and processing is twofold: to provide data for others to visually denote and quantify inundation damage areas from no damage areas and to provide data for others to visually denote and quantify degree of damage as heavy, moderate and light and for future H and H analysis. The 10,000 foot x 10,000 foot digital orthophoto tiles and the 5,000 x 5,000 foot LiDAR tiles were based on the U.S. National Grid. The final product consists of color digital orthophoto tiles at a 1.0 foot pixel in TIFF format with ASCII TFW file with LiDAR data set. The orthophotos and surface data will be used to support Yellowstone corridor studies CONTRACT NO: W912P9-10-D-0533 TASK ORDER NO: 0006 CONTRACTOR: Woolpert Inc. 20111030 20111104 ground condition Complete As needed -109.7 -103.53 48.20 45.4 ISO 19115 Topic Category imageryBaseMapsEarthCover Raster 0.03 meter orthoimage rectified photography orthophoto natural color orthophoto orthoimage aerial photo air photo Montana North Dakota McKenzie County Williams County Carbon County Custer County Dawson County Prairie County Richland County Rosebud County Stillwater County Treasure County Wibaux County Yellowstone County no restrictions apply to this 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. U.S. Army Corps of Engineers, St. Louis District Chief, Geospatial Branch mailing and physical address

1222 Spruce St.

St. Louis MO 63103-2833 314-331-8368 314-331-8071 Unclassified Unclassified Unclassified Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.4.1420 USCOE Unpublished Material raster digital data Resolution and Accuracy: Color, stereo, vertical aerial photography will be acquired at twelve- inch (12") pixel resolution with a 1"= 200' accuracy (4.39 ft RMSE) and shall meet or exceed American Society of Photogrammetry and Remote Sensing (ASPRS) Class I Standards for well defined points. 4.39 foot RMSE Points measured will produce an error less than 4.39 foot RMSE. Resolution and Accuracy: Color, stereo, vertical aerial photography will be acquired at twelve- inch (12") pixel resolution with a 1"= 200' accuracy (4.39 ft RMSE) and shall meet or exceed American Society of Photogrammetry and Remote Sensing (ASPRS) Class I Standards for well defined points. 4.39 foot RMSE Number of Points: Twenty (20) ground control points. Point Type: Semi-permanent Control Type: Photo ID Horizontal Unit: foot Vertical Unit: foot Horizontal Datum: NAD 83, Montana State Plane Vertical Datum: NAVD 88 The horizontal coordinate system and projection used for this project will be North America Datum 1983, Montana State Plane. Vertical elevations will meet or exceed 18.5 cm RMSE (Accuracyz = 0.36m at the 95% confidence level). USCOE 20120209 raster digital data disc 20111030 20111104 ground condition Orthophoto Digital aerial imagery was acquired at 32-bit 4-band stack red, green, blue, and CIR bands. This imagery was orthorectified to the terrain data and the ground control survey. To produce the color digital orthophotos with a 1.0 foot pixel GSD, Woolpert obtained aerial photography according to the following specifications: Camera: Leica ADS80-SH81/82 Airborne Digital Sensor Flying Height: 9,494' AGL for a nominal 1.0 foot pixel GSD Imagery Type: RGB+NIR Side Lap: 25% The imagery was acquired using the Leica ADS80-SH81/82 multispectral scanner. The fundamental resolution of the imagery was 1.0 foot. The ADS80-SH81/82 utilizes the Applanix POSAV direct positioning and orientation system that is based on airborne GPS and inertial measurement unit (IMU) technology. POSAV data were reduced using the Applanix POSPAC software package (V4.3). All of the source imagery was processed using the Leica GPRO (V3.2) software package. This package provides the capability to perform digital mage processing, aerial triangulation, and image rectification. The strips of imagery were ortho rectified to existing digtial elevation model (DEM) data. The individual rectified strips of ortho rectified imagery were then mosaicked together to form a seamless imagery database over the entire task order area using the OrthoVista software (V4.3) by Inpho GmbH. The final digital orthophoto imagery tiles were extracted using OrthoVista. 1200 Woolpert, Inc. Geospatial Services mailing and physical address

4454 Idea Center Blvd.

Dayton OH 45430 937-461-5660 937-461-0743 State Plane Coordinate System 1983 2500 45.000000 49.000000 -109.500000 44.250000 1968500.000000 0.000000 row and column 1.00000 1.00000 feet North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 North American Vertical Datum of 1988 1.0 feet Explicit elevation coordinate included with horizontal coordinates Montana State Library mailing address

PO Box 201800

Helena MT 59620-1800 406-444-5354 406-444-5354 Montana Relay 711 406-444-0266 geoinfo@mt.gov 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/NonMSDI/Collections/Yellowstone_River_Clearinghouse/Imagery/2011/ 20140106 20131029 20130417 20120910 U.S. Army Corps of Engineers, St. Louis District Chief, Geospatial Branch mailing and physical address

1222 Spruce St.

St. Louis MO 63103-2833 314-331-8368 314-331-8071 FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 {32bc2062-c9e1-4129-8311-ccc1084a9196}