Site Investigation of Tributary Drainages to the San Pedro River

In late 2013 the Arizona Geological Survey (AZGS) partnered with the Arizona Department of Water Resources (ADWR) to investigate sedimentary relationships at numerous sites along the San Pedro River in southeastern Arizona. Previously, AZGS conducted surficial geologic mapping along the San Pedro River, Aravaipa Creek, and the Babocomari River in 2007. These maps and a report are available in AZGS DM-RM-1.2. The goal of this project was to conduct site investigations along the San Pedro River to determine whether sedimentary relationships between San Pedro River and tributary alluvium are accurately represented by their mapped location on the surface. This document includes a brief summary and description of sites along the San Pedro River visited by AZGS geologists in late 2013 and early 2014.OFR-15-02 was drafted in 2015 and underwent modest revision in July 2017. It was first published in August 2017.Documents in the AZGS Documents Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact azgs-info@email.arizona.edu)