skip to the content of this page Arizona's Official Website Arizona Department of Water Resources
Arizona Department of Water Resources Arizona's Official Web Site
Securing Arizona's Water Future
Geography of the Donnelly Wash Basin

The Donnelly Wash Basin is a small, 293 square mile basin in the northwestern portion of the planning area.  Geographic features and principal communities are shown on Figure 3.4-1.  The basin is characterized by low elevation hills, washes and canyons.  Vegetation is primarily Arizona Sonoran desertscrub with a smaller area of semi-desert grassland. (see Figure 3.0-9).

Principal geographic features shown on Figure 3.4-1 are:

  • Gila River, which runs east-west through Cochran
  • Box Canyon and Walnut Canyon entering from the north and terminating at the Gila River
  • Donnelly Wash, Cottonwood Wash and Box Wash, which run roughly parallel to each other south of Cochran
  • The Ninety-Six Hills along the southwest boundary, which include the highest point in the basin at 4,420 feet
  • The lowest point at 1,600 feet at Price where the Gila River exits the basin.

Click to view Figure 3.4-1

Click for Figure 3.4-1 Donnelly Wash Basin Geographic Features


Arizona Water Atlas Home

Southeastern Arizona Planning Area Home

Click to download a pdf of the Southeastern Arizona Planning Area Click to download a pdf of the Donnelly Wash Basin References and Supplemental Readings for the Donnelly Wash Basin
Colorado River Southeastern Arizona Planning Area

Download Southeastern Arizona Planning Area Atlas

Gila River in Donnelly Wash Basin Tortilla Mountains