Mike Cox, WSWG Chair
Nevada Department of Wildlife
6980 Sierra Center Pkwy,
Suite 120
Reno, NV 89511
(775) 688-1556 Office
(775)240-1335 Cell 
Email: mcox@ndow.org

Maps Associated with Wild Sheep Management

North American Bighorn Sheep Historic Distribution pdf Map

This link above is a broad depiction of historic Wild Sheep Distribution in 1850, 1960, and current time.  The United States portion of the 1850 and 1960 maps was developed by Helmut K. Beuchner, author of the 1960 Wildlife Monograph, “The Bighorn Sheep in the United States, Its Past, Present, and Future.  Beuchner considers these maps to be “probable distribution . . .”.  similarly to those that depict bird species ranges in field guides at a very broad scale.  The WSWG recognizes the intent was to depict mountain ranges or complexes of rugged terrain where bighorn would exist but not the adjacent flat valleys.  The WSWG also recognizes there were geographic errors made in these maps.  The 1850 and 1960 distribution in Canada and Mexico was developed by the Wild Sheep Foundation (not affiliated with the Wild Sheep Working Group) with a “broad brush”.  The majority of the 2012 map is based on GIS mapping of occupied bighorn sheep habitat provided by each WAFWA jurisdiction.

 

Bighorn Sheep Translocation pdf Maps by Jurisdiction

Translocations have played an integral role in bighorn sheep restoration and management.  Use of translocations for restoring wild sheep began in 1922 with the capture of 20 bighorns in Alberta, Canada and subsequent release of 12 animals in Montana and 8 animals at Custer State Park, South Dakota. Since then, at least 1,460 separate projects have resulted in the translocation of more than 21,500 bighorn sheep in the United States and Canada combined. The roots of today’s bighorn populations in Nebraska, North Dakota, South Dakota and Texas can be traced entirely to translocations. The translocations reflected in these maps resulted in successful establishment of self-sustaining populations on many historic ranges, increased numbers and genetic diversity of individual populations, and expanded ranges of existing populations.  The intent of this project, produced by the WSWG, is to record and archive all known captures and translocations within the 19 United States and Canadian jurisdictions inhabited by bighorn sheep.  There are separate maps for each jurisdiction showing in-state, import and export translocations.

First Nations - Map of federally recognized First Nation tribal lands with the United States

Name OwnerCategoryLast UpdatedSize Download
First Nation Tribal Lands in US.pdf Carolyn BoydFirst Nations7/26/2017 5.18 MB Download

West-wide Bighorn Sheep Habitat and Domestic Sheep Grazing Allotments