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Geography of the Gila Bend Basin

The Gila Bend Basin, located in the east central part of the planning area, is 1,284 square miles in area.  Geographic features and principal communities are shown on Figure 7.2-1.  The basin is characterized by washes and a series of small mountain ranges. Vegetation types include Lower Colorado River Valley and Arizona uplands Sonoran desertscrub.  (See Figure 7.0-9)

Principal geographic features shown on Figure 7.2-1 are:

  • The Gila River running east to west in the northern portion of the basin and Painted Rock Reservoir, which during flood events impounds the river
  • Quilotosa and Sauceda Washes south of Gila Bend
  • Maricopa and Sand Tank Mountains in the eastern portion of the basin, the Sauceda Mountains in the south and the Gila Bend Mountains in the north
  • The highest point in the basin at 3,183 feet in the Maricopa Mountains
  • The lowest point in the basin about 660 feet at Painted Rock Dam where the Gila River exits the basin



Click here for Figure 7.2-1

Figure 7.2-1 Gila Bend Basin Geographic Features


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References and Supplemental Reading for the Gila Bend Basin

Colorado River
Lower Colorado River Planning Area
Click to download Volume 7
Gillespie Dam
Agriculture near Town of Gila Bend