Colorado Parks & Wildlife - Species Data - River Otter Winter Range
Colorado Parks and Wildlife Biologists, District Wildlife Managers, and Researchers
RiverOtterWinterRange is an ESRI SDE Feature Class showing the location of winter range for Northern River Otter (Lutra canadensis) in Colorado. Winter Range is defined as areas used by otters when ice cover is present. This will normally, but not necessarily, be smaller than the overall range. 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).