GEOGRAPHIC INFORMATION

1950s and 2001 Fisheries Habitat of the Yellowstone River

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Data Provider DTM Consulting
Date 1948 - 2001
Content Type Downloadable Data
Abstract These data are four layers that show fishery habitat types of the Yellowstone River at low-flow and bankfull stage, derived from aerial photographs frome two periods, 1948-1951 and 2001. It is part of a series of datasets that show fishery habitat types for 2001 and the 1950s, showing low-flow conditions at the time of the photography and interpreted bankfull conditions. The mapping extent starts approximately 10 miles upstream from Park City and extends to the confluence with the Missouri River.The 2001 mapping was performed by DTM Consulting in 2009 and the same mapping criteria were applied to the 1950s imagery in 2011. The changes in the 2001 mapping were mainly focused in the Secondary Seasonal habitats and involved removing Point, Side and Mid Channel Bars from these essentially dry channels.There is one key difference between the 2001 and 1950s mapping. The 2001 mapping utilized the detailed color-infrared imagery. This imagery does a very good job of highlighting vegetation on the bars. This allowed for fairly consistent identification of the general vegetation characteristics on the bars (emergent, established, mature, no veg). The 1950s black and white imagery allows for this vegetation attribution in some areas, but it is very inconsistent. Herbaceous vegetation and wet sand/gravel look very similar. Because we could not consistently populate this attribute, it has been omitted from the 1950s data set.
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Supplemental Information
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.
Data Access https://ftpgeoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Collections/Yellowstone_River_Clearinghouse/Shapefiles/YellowstoneFishHabitat1950_2001.zip
Distributor Montana State Library
PO Box 201800
 Helena, MT 59620-1800
Telephone: 406-444-5354
TDD/TTY: Montana Relay 711
Fax: 406-444-0266
Email: geoinfo@mt.gov
Distribution liability 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.
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Metadata date 01/28/2015

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