BighornSevereWinter is an ESRI SDE Feature Class showing that part of
the winter range where 90% of the individual animals are located when
the annual snowpack is at its maximum and/or temperatures are at a
minimum in the two worst winters out of ten. Not all populations exhibit
migratory behavior during severe winters, many will stay within the
defined winter range regardless of conditions. Thus, some populations
may not have a mapped severe winter range distribution.
This information was derived from field personnel. A variety of data
capture techniques were used including drawing on mylar overlays at
1:50,000 scale USGS county mapsheets and implementation of the
SmartBoard Interactive Whiteboard using stand-up, real-time digitizing
at various scales (Cowardin, M., M. Flenner. March 2003. Maximizing
Mapping Resources. GeoWorld 16(3):32-35).
Dataset was acquired from a third party distributor who obtained it from CDOW in January 2011. The authoritative data source is available on ArcGIS.com (http://www.arcgis.com/home/item.html?id=d1359dc6cf6e44979cacbfdbc34691e4) and will be updated from that location.