Tags: alison,arizona,cochise county,cottonwood tree,fall color,san pedro riparian national conservation area,san pedro river,san pedro river valley,tamarisk,tucson field office,united states

Big Cottonwoods along the San Pedro right and center, Tamarisk on the left.
Tags: arizona,cochise county,cottonwood tree,san pedro riparian national conservation area,san pedro river,san pedro river valley,tamarisk,tucson field office,united states

Tamarisk - Saltcedar - an aggressive invasive species adding beautiful color to the river.
Tags: arizona,cochise county,fall color,san pedro riparian national conservation area,san pedro river valley,tamarisk,tucson field office,united states