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Securing Arizona's Water Future

Geography of the Grand Wash Basin

The Grand Wash Basin, located in the western part of the planning area is 959 square miles in area.  Geographic features and principal communities are shown on Figure 6.2-1.  The basin is characterized by cliffs and washes. Vegetation is primarily Mohave desertscrub and Great Basin conifer woodland with small areas of Great Basin desertscrub, interior chaparral and Plains and Great Basin grassland. (See Figure 6.0-11)

Principal geographic features shown on Figure 6.2-1 are:

  • Lake Mead forming the southwestern basin boundary and the lowest point in the basin at 1,100 feet

  • Grand Wash in the western portion of the basin

  • Grand Wash and Upper Grand Wash Cliffs running north-south through the basin

  • Mud Mountain in the northern portion of the basin

  • The highest point in the basin, Last Chance Knoll in the east central part of the basin at 6,758 feet

 

 

Click to view Figure 6.2-1

Click to view Figure 6.2-1 Grand Wash Basin

Geographic Features

 

 

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