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

Tucson AMA Geographic Features

The Tucson AMA is 3,869 square miles in area.  Geographic features and principal communities are shown on Figure 8.5-1.  The AMA is characterized by mid to high elevation mountains and broad alluvial basins. Vegetation types include Lower Colorado River and Sonoran upland desertscrub, southwestern grassland, interior chaparral, madrean evergreen woodland and small areas of petran montane conifer forest. Riparian vegetation is found along some watercourses, notably Sabino and Romero Creeks and at Arivaca Cienega (See Figure 8.0-10)

Principal geographic features shown on Figure 8.5-1 are:

  • The Santa Cruz River running south to north in the center.
  • Pantano Wash, Rillito Creek and Sabino Creek in the central eastern portion of the AMA and Altar and Brawley Wash in the west.
  • The Picacho Mountains and Black Mountain on the northern AMA boundary, the Santa Catalina, Rincon, and Santa Rita Mountains on the eastern boundary, the Sierrita and Santa Rita Mountains along the southern boundary, and the Baboquivari, Roskruge, Waterman and Silver Bell Mountains on the western boundary.
  • Altar Valley and Avra Valley in the western portion of the AMA and, though not specifically indicated, the Santa Cruz River Valley along the Santa Cruz River drainage in the center of the AMA.
  • The lowest point in the AMA at 1,770 feet, just north of Picacho Peak where Interstate 10 exits the AMA.
  • The highest point in the AMA at 9,453 feet at Mt. Wrightson in the Santa Rita Mountains.

Click to view Figure 8.5-1

Figure 8.5-1 Tucson AMA Geographic Features


Arizona Water Atlas Home

Active Management Area Water Atlas Home

Download pdf of the Tucson AMA

Colorado River

Click to download Volume 8

Downtown Tucson
Sabino Canyon