The 36 million-acre Grand Canyon Ecoregion (GCE) is bounded on the west by the Grand Wash drainage, on the east by the Little Colorado River watershed, and extends from the Mogollon Rim in central Arizona north to southern Utah’s High Plateaus. Scientists have conducted feasibility studies* determining where within the GCE the best suitable habitat for wolves exists.

*Feasibility Studies
Carlos Carroll study 2004
Carlos Carroll study 2006
Paul Sneed feasibility study 2004
Kurt Menke feasibility study 2006