Colorado Parks & Wildlife - Species Data - River Otter Overall Range
Colorado Parks and Wildlife Biologists, District Wildlife Managers, and Researchers
RiverOtterOverallRange is an ESRI SDE Feature Class showing the Overall Range for Northern River Otter (Lutra canadensis) in Colorado. Overall Range is defined as those areas encompassing all mapped seasonal activity areas within the observed range of a population of river otters. 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).