Seismotectonic Investigation for Horseshoe and Bartlett Dams, Salt River Project, Arizona
Horseshoe and Bartlett Dams are located In the Transition Zone of central Arizona. Within this province, faults with evidence of Quaternary activity are widely scattered, and selsmiclty Is low In comparison to other parts of the western United States. However, most of the known or suspected Quaternary faults and most of the historic selsmlclty In Arizona occur within or adjacent to the Transition Zone. Based on data gathered during this study for Horseshoe and Bartlett Dams and on the results of previous studies for Stewart Mountain and Theodore Roosevelt Dams (Anderson and others, 1986; 1987), two recurrent Quaternary faults have been Identified In the Immediate area of the subject dams (within approximately a 50-km radius). The two faults are the Horseshoe and Sugar1oaf faults.
Piety, L.A. and Anderson, L.W., 1990, Seismotectonic investigation for Horseshoe and Bartlett Dams, Salt River Project, Arizona: Bureau of Reclamation Seismotectonic Report 90-7, 59 p.
Email Address Created for Land Exchange Questions
The Southwestern Region Office of Lands and Minerals Management is overseeing and administering the land exchange and appraisal process which includes the 2,422-acre Oak Flat Federal Parcel. All questions about the land exchange and appraisal process should be emailed to SM.FS.firstname.lastname@example.org
Programmatic Agreement Info
To comply with Section 106 of the National Historic Preservation Act, the Tonto National Forest developed a Programmatic Agreement (PA) and included it in Volume 5, Appendix O of the final EIS. The PA was created in cooperation with the Advisory Council on Historic Preservation, the State Historic Preservation Office, tribes and other consulting parties. The PA contains an agreed upon process for identifying, evaluating and addressing adverse effects to historic properties associated with this undertaking.
To review Volume 5 and the PA, Download Vol 5 PDF, 27 MB.