Montana Office, U.S. Natural Resources Conservation Service 20040312 Helena, MT Montana State Library https://ftpgeoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Collections/Yellowstone_River_Clearinghouse/Shapefiles/YelRivPhysFeat2001.zip https://mslservices.mt.gov/Geographic_Information/Data/DataList/datalist_Details.aspx?did={17daa910-aba0-11e3-a5e2-0800200c9a66} These data were removed from the State Library web site in June 2016 because a revised version without data that were outside of the project scope became available. See the State Library's Yellowstone Clearinghouse for the more recent data. The archive includes two inventories. One is for the Yellowstone River in Park County that reflects conditions of 1999 and the other is for the river downstream from Park County that reflects conditions of 2001. The 1999 Park County Historic Channel Modification inventory was prepared along with inventories for the years 1954 and 1973 for the upper Yellowstone River from Gardiner, Montana to Springdale, Montana in 2001 and 2002 to support the cumulative effects investigation sponsored by the Governor's Upper Yellowstone River Task Force. The 1954 and 1973 inventories are available from the Montana State Library Yellowstone Clearinghouse. Starting with a physical features inventory conducted in April, 1998 by the USDA NRCS and Montana DEQ, 1999 aerial photos of the channel in Park County were viewed in stereo and a variety of adjustments were made to features identifiable as barbs or jetties, riprap, and dikes: some features were reclassified; spatial extent of features were reduced or extended as appropriate, and new features were added. Other features identified in the original inventory (photo points, irrigation diversions, etc.) were deleted. Additional information used to supplement interpretation of the 1999 photos included field notes and mapping done in August and September 2000 and 2001, and topographic mapping done in support of the project. The downstream 2001 inventory of structures and bank features of the Yellowstone River that may affect the flow or course of the river. The inventory was sponsored by the Yellowstone River Conservation Districts Council and partner agencies. The inventory was conducted in October 2001 using a Rapid Aerial Assessment (RAA) technique. Features were mapped using a helicopter and crew equipped with GPS devices. Subsequent ground-truthing (via jet boat) was conducted for purposes of locating additional structures not visible from the air and structure condition assessment. Features identified and mapped during the RAA include: - Existing stream stabilization structures (riprap, jetties, dikes, flow deflectors, etc.) - In-channel structures (irrigation diversions, head gates, pump sites) - Stream crossings (bridges, power lines) - Irrigation return flow points - Accelerated bank erosion - Significant natural sediment sources (valley wall sloughing) - Municipal Structures (water intake structures, lagoon discharge points) - Floodplain Features (dikes, elevated ditches, elevated roads) - limited mapping The data provides a reconnaissance-level baseline dataset of physical features within the Yellowstone River corridor. The data were used to prioritize future Yellowstone River cumulative effects studies and identify resource improve projects within the corridor. 2001 ground condition -110.93 -103.95 47.99 45.02 ISO 19115 Topic Category inlandWaters environment structure Yellowstone River Montana North Dakota Park County Sweet Grass County Stillwater County Yellowstone County Treasure County Rosebud County Custer County Prairie County Dawson County Richland County McKenzie County This is public information and may be used by organizations, agencies, units of government, or others based on needs; however they are responsible for the appropriate application. 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. Montana State Library mailing address

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Helena MT 59620-1800 406-444-5354 Montana Relay 711 406-444-0266 geoinfo@mt.gov Montana Department of Transportation Unpublished Material 6000 19980330 Physical river features were plotted on these airphotos as they were collected in the field in Park County. USDA Forest Service Northern Region Unpublished Material 12000 19990411 Channel (riprap and barbs) and floodplain modifications (dikes) were identified on these photos. Montana Office, U.S. Natural Resources Conservation Service Unpublished Material 200110 ground condition Data from this source, collected with Helicopter at approximately 500 feet above ground level, using PCGPS 5.5 software by CMT Incorporated, comprises the bulk of the data set. U.S. Natural Resources Conservation Service 20020509 Helena, MT Montana State Library https://ftpgeoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Collections/Yellowstone_River_Clearinghouse/Imagery/2001_IR/ 200108 ground condition The final positions of features in the data set correspond to their images in these photos, where they are visible. Park County Inventory: Starting with a physical features inventory conducted in April, 1998 by the USDA NRCS and Montana DEQ, 1999 aerial photos of the channel from Gardiner to Springdale were viewed in stereo and a variety of adjustments were made to features identifiable as barbs or jetties, riprap, and dikes: some features were reclassified; spatial extent of features were reduced or extended as appropriate, and new features were added by MT DNRC. Other features identified in the original inventory (photo points, irrigation diversions, etc.) were deleted. Additional information used to supplement interpretation of the 1999 photos included field notes and mapping done in August and September 2000 and 2001, and topographic mapping done in support of the project. 2002 Park County Inventory: Continuing with the layers from the previous Process Description, some point features were moved to better match the photos available for the area. Some point features were changed to line features so that this data could be used with the rest of the Yellowstone River data. Note that a point Displaced Car Body is different than a line Car Body. 200405 Park County Inventory: Several line files were joined together along with some features that had been points and converted to lines. These features were riprap (now Rock RipRap), dikes (now Floodplain Dike/Levee), barb (converted from points to lines and now Flow Deflectors), failed bank riprap (converted from points to lines and now Rock RipRap), and bedrock sill (converted from points to lines and now Bedrock Outcrop). These changes were made so that this data could be used with the rest of the Yellowstone River data. 2005 Lower River Inventory: Correct GPS coordinates to correspond with features visible on color infrared aerial photography. 2005 Warren Kellogg USDA-NRCS Watershed Specialist (406) 444-4490 (406) 444-6721 wkellogg@mt.gov State Plane Coordinate System 2500 45.000000 49.000000 -109.500000 44.250000 600000.000000 0.000000 coordinate pair meters North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 Montana State Library mailing address

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Helena MT 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. 20160622 Montana State Library mailing address

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Helena Montana 59620-1800 406-444-5354 geoinfo@mt.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 {dbccd653-5ad5-490e-a565-32d5532b1734}