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Geography of the McMullen Valley Basin

The McMullen Valley Basin, located in the northeastern part of the planning area, is 649 square miles in area.  Geographic features and principal communities are shown on Figure 7.5-1.  The basin is characterized by two valleys bordered by mountain ranges. Vegetation types include Lower Colorado River Valley and Arizona uplands Sonoran desertscrub with small amounts of southwestern interior chaparral and semi-desert grassland.  (See Figure 7.0-9)

Principal geographic features shown on Figure 7.5-1 are:

  • Centennial Wash running east to west through the center of the basin
  • McMullen Valley in the western portion of the basin and Aguila Valley in the eastern portion of the basin
  • Harquahala Mountains along the southern basin boundary and the Harcuvar Mountains on the northern basin boundary with the highest point in the basin at 5,242 feet.
  • The lowest point in the basin at approximately 1,680 feet where Centennial Wash exits the basin southeast of Salome.

Click here for Figure 7.5-1

Figure 7.5-1 McMullen Valley Basin Geographic Features


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References and Supplemental Reading for the McMullen Valley Basin

Colorado River
Lower Colorado River Planning Area
Click to download Volume 7
Eagle Eye Peak
Centennial Wash