Description: These are points along the center of the 1999-2001 channel of the Yellowstone River that show the number of miles from the confluence of the Yellowstone and Missouri rivers.The point locations were generated by generating a point every mile from the measure-enabled river centerline digitized by hand from orthorectified aerial photos taken in 2001 along the river below Park County and orthophotos taken in 1999 along the river in Park County. The river centerline is available in the "Historic River Channels" layer available from the Yellowstone Clearinghouse at http://geoinfo.msl.mt.gov/data/yellowstone_river.
Description: Yellowstone River 2004 Geomorphic Reconnaissance Study Reaches. These regions are used to define changes in river channel characteristics based on geomorphic parameters. The reach breaks reflect changes in the channel form captured by color infrared imagery of 2001, but re-assesed as banklines and flowlines of the river were digitized from aerial photos of 1950, 1976, and 1995.
The break lines at the river channel were extended to split a 5-mile buffer around the river.
Please see http://geoinfo.msl.mt.gov/Home/data/yellowstone_river for more information about this layer.
Description: This is an inventory of structures and bank features of the Yellowstone River in Montana and North Dakota 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 data were updated in 2013 by examination of high-resolution aerial photos taken in 2011. New features were added to the data and features that no longer exist were flagged. The source data are based on a combination of an inventory done in Park County in 1999 and an inventory that was done for the remaining downstream extent of the river in 2001. The source data were modified in 2013 to remove records of items that were outside the scope of the study. The downstream 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 Park County inventory was part of an Historic Channel Modification Inventory for the years 1954, 1973 and 1999 to support the cumulative effects investigation sponsored by the Governor's Upper Yellowstone River Task Force. 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. 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.
Description: This is an inventory of structures and bank features of the Yellowstone River in Montana and North Dakota 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 data were updated in 2013 by examination of high-resolution aerial photos taken in 2011. New features were added to the data and features that no longer exist were flagged.The source data are based on a combination of an inventory done in Park County in 1999 and an inventory that was done for the remaining downstream extent of the river in 2001. The source data were modified in 2013 to remove records of items that were outside the scope of the study.The downstream 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 mappingThe Park County inventory was part of an Historic Channel Modification Inventory for the years 1954, 1973 and 1999 to support the cumulative effects investigation sponsored by the Governor's Upper Yellowstone River Task Force. 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. 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.
Description: These are polygons representing the bankfull channels of the Yellowstone River digitized from aerial photos of 1999/2001.
Please see http://geoinfo.msl.mt.gov/Home/data/yellowstone_river for more information about this layer.
Description: These are polygons representing the bankfull channels of the Yellowstone River digitized from aerial photos of 1995.
Please see http://geoinfo.msl.mt.gov/Home/data/yellowstone_river for more information about this layer.
Description: These are polygons representing the bankfull channels of the Yellowstone River digitized from aerial photos of 1976/77.
Please see http://geoinfo.msl.mt.gov/Home/data/yellowstone_river for more information about this layer.
Description: These are polygons representing the bankfull channels of the Yellowstone River digitized from aerial photos of 1948/50.
Please see http://geoinfo.msl.mt.gov/Home/data/yellowstone_river for more information about this layer.
Description: These are counties that the Yellowstone River flows through or borders in Montana and North Dakota. Selected from 2009 TIGER files downloaded from the U.S. Census Bureau (http://www.census.gov/geo/www/tiger/tgrshp2009/tgrshp2009.html).
Description: These are aerial photos of the Yellowstone River that were made between 1948 and 1955. The photos of Park County were made in 1954 and 1955, while the photos of the remainder of the river were made between 1948 and 1951.
The photos were georeferenced and rectified in an attempt to make them locationally correct along the river. The photos are not orthorectified and areas away from the river are likely not locationally accurate.
Please see the Yellowstone River Clearinghouse at the Montana State Library for more information about the photos.