Decision Memo Completed

Bureau of Reclamation Seismic Hazard Study

Tonto National Forest Gila; Maricopa, Arizona Cave Creek Ranger District

Investigating active and potentially active faults in central Arizona for dams along the Salt and Verde rivers. The investigation involves digging soil pits by hand at 20 locations within the Tonto National Forest.

Location

near Horseshoe Dam near the Horseshoe Dam road, approximately16 air miles Northeast from Cave Creek. The legal location of the project is Township 08N., Range 06E., Section 21, 28, & 33 and Township 6N., 5E., 23 & 34

Project timeline

1
Scoping Start
05/30/2024
2
Decision
03/2025 (Estimated)
3
Implementation
04/2025 (Estimated)

NEPA / regulatory detail

Categorical Exclusion32.2 (8), 36 Cfr 220.6(E)(8)
Special AuthorityNot Applicable / Other
Notice and Comment RegulationNot Subject to Regulations
Project ActivitySpecial Use Authorizations
Bureau of Reclamation Seismic Hazard StudyDecision Signed Date: 03/31/2025
ForestsTonto National Forest
DistrictsCave Creek Ranger District
Legal Land DescriptionTownship 08N., Range 06E., Section 21, 28, & 33 and Township 6N., 5E., 23 & 34
Special use management