The San Pedro River is Arizona's last undammed river. Joe Cook and his colleagues at the Arizona Geological Survey recently mapped the extent of Holocene channel and floodplain alluvium there. This 122-mile map story from the US-Mexico Frontier to Winkelman, Arizona, shows you the San Pedro River Valley as seen through the eyes of a geologist.
Resource Links
Go to the Arizona San Pedro River Storymap
Click the link(s) above to download or go to the resources
