Documents

This report presents the results of probabilistic seismic hazard analyses for use in screening/scoping-level dam safety and/or risk assessments of Granite Reef Diversion and Theodore Roosevelt Dams in southern Arizona. The purpose of these evaluations is to estimate the levels of ground motions, which will be exceeded at specified annual frequencies (or return periods), at the damsites.

The moment magnitude (M_w) 7.9 Fort Tejon earthquake of 1857, with a ~350-kilometer-long surface rupture, was the most recent major earthquake along the south-central San Andreas Fault, California. Based on previous measurements of its surface slip distribution, rupture along the ~60-kilometer-long Carrizo segment was thought to control the recurrence of 1857-like earthquakes.

The principal objective of this report is to present and review groundwater level and hydraulic head data for the RC hydrologic monitoring network.

Arizona - Reserving lands within national forests for use of the Forest Service as campgrounds, recreation areas, or for other public purposes

This report provides the results of a noise monitoring study conducted at the West Plant of the Resolution Copper Mining LLC (RCM) in Superior, Arizona. The study documented the noise levels for a continuous monitoring period from May 7, 2015 through May 15, 2015. The purpose of this study was to document the existing noise levels at three locations along the RCM West Plant’s southern property boundary line which lies adjacent to a residential community.

Map and game species overview of Unit 37B.

A literature review was completed to summarize current information regarding the characteristics and potential performance of Gila Conglomerate as a capping material and plant growth medium.

An ecologically based classification system, when accompanied by digitized biotic community maps, has been shown to be useful for plotting and assessing plant and animal affinities in the American Southwest and northwestern Mexico.

This document provides guidance for the management of about 930,200 acres of Federal surface and mineral estate administered by the Bureau of Land Management (BLM) in Maricopa, Gila, Pima, Pinal, and Yuma Counties in central and southern Arizona. It also provides guidance for administration of an additional 210,000 acres of mineral estate within these four Counties.

COVER ONLY

Materials that meet the criteria of Freedom of Information Act exemptions are not posted on this website. Culturally sensitive materials not posted here fall under this criteria.