DTM Consulting, Inc., DTM Consulting, Inc. 20120425 vector digital data Helena, MT Montana State Library https://ftpgeoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Collections/Yellowstone_River_Clearinghouse/Geodatabases/YellowstoneRiparian.zip https://mslservices.mt.gov/Geographic_Information/Data/DataList/datalist_Details.aspx?did={17daa910-aba0-11e3-a5e2-0800200c9a66} The vegetation mapping effort consisted of digitizing vegetation polygons using 1950's, 1976-1977, and 2001 aerial imagery in a GIS environment. The polygons are digitized at a scale of approximately 1:7,500, with a minimum mapping unit of approximately 10 acres. The goal of the delineation was to capture areas of similar vegetation structure as they appeared on the aerial imagery, while maintaining a consistent scale. This was notably challenging with the 1950 images due to locally poor resolution of the riparian areas. The 1977 and 2001 imagery has significantly better resolution. Six vegetation classes were developed for the mapping effort. These classes were determined to be the highest level of detail permitted by all suites of imagery. For the purposes of this study, only the three woody vegetation classes are summarized as "riparian". The Herbaceous, Channel and Outside of Floodplain classes were not summarized or analyzed by this study. It should be noted that, due to the remote nature of the mapping, the vegetation delineation is subject to interpretation errors. While polygon boundaries may be of good accuracy, the vegetation class assigned to them is in many places limited by the resolution of the photography. Efforts were made to verify the spatial and attribute accuracy of vegetation polygons, including checking them against field data collected by the avian study that was recently completed by MSU as part of the overall Yellowstone River Cumulative Effects Study. Vegetation Class Codes: Herbaceous = H Shrub = S Open Timber = TO Closed Timber = TC Channel = Ch Outside of inundation boundary or imagery extents = OUT Riparian vegetation boundaries mapped from 2001 color infrared imagery. Approximate mapping scale is 1:7.500. Minimum Mapping Unit is approximately 10 acres. Some areas smaller than 10 acres were mapped if they were distinct and identifiable in the imagery. See the accompanying report for complete details on the mapping process. 1950 2001 Ground Condition -110.252769 -103.925126 48.117210 45.452978 ISO 19115 Topic Category environment biota riparian vegetation Yellowstone River Montana North Dakota 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. DTM Consulting, Inc. Tony Thatcher mailing and physical

211 N Grand Ave #J

Bozeman MT 59715 406-585-5322 tony@dtmgis.com DTM Consulting, Inc., Yellowstone River Conservation Districts Council Vector G-polygon 4400 State Plane Coordinate System 2500 45.000000 49.000000 -109.500000 44.250000 600000.000000 0.000000 Meter D North American 1983 GRS 1980 6378137.0 298.257222101 Attributes for each feature class Shape_Length Length of feature in meters. Shape_Area Area of feature in square meters. BANK Is the polygon on the left or right side of the primary channel centerline. YR Year(s) of base photography. Some photo series use photography from more than one year in order to build a complete imagery series. Reach_ID Reach identifier for the Yellowstone Cumulative Effects Study. OBJECTID Internal feature number. Shape Feature geometry. Veg_Code Short vegetation code for the mapped polygons. Veg_Class Full vegetation description for the mapped polygons. Montana State Library mailing address

PO Box 201800

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. ESRI Personal GeoDatabase https://ftpgeoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Collections/Yellowstone_River_Clearinghouse/Geodatabases/YellowstoneRiparian.zip 20131115 20130417 20120425 DTM Consulting, Inc. Tony Thatcher mailing and physical

211 N Grand Ave #J

Bozeman MT 59715 406-585-5322 tony@dtmgis.com FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 {DA72CC7F-CF34-48EE-82C6-8AFC0D2E6535}