San Pedro Valley (Arizona)

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For the valley in the San Francisco Bay area, see San Pedro Valley (California).
San Pedro Valley
Charleston year 1885.jpg
Charleston, Arizona, (ghost town), west bank of San Pedro River, (central-south)-San Pedro Valley, 1885
Country United States
States Arizona, Sonora
Region (northeast)-Sonoran Desert
Districts Cochise (county), USA, Sonora (state), Mexico
Borders on Rincon, Whetstone & Huachuca Mtns-W
Little Dragoon, Dragoon & Mule Mtns-E
Communities Benson, AZ, Tombstone, AZ, Sierra Vista Southeast, AZ, Naco, SON
Landmark Kartchner Caverns State Park
River San Pedro River
Coordinates 31°38′9″N 110°10′21″W / 31.63583°N 110.17250°W / 31.63583; -110.17250Coordinates: 31°38′9″N 110°10′21″W / 31.63583°N 110.17250°W / 31.63583; -110.17250
Length 50 mi (80 km)
(far south river site)-San Pedro Valley
of Arizona, USA & Sonora, Mexico

The San Pedro Valley of western Cochise County Arizona is a 50 mile long, mostly north-south valley, trending northwesterly. It drains from Sierra Vista Southeast north towards I-10, Benson, and the southeast of the Rincon Mountains.

The coordinates for Charleston, Arizona, south center of the valley are 31,38,9-N, 110,10,21-W.[1]


  1. ^ various web links (based on Wikipedia article Charleston) 31,38,9-N, 110,10,21-W)