U.S. Geological Survey

Thumbnail image of Geohydrology and Water Resources of Alluvial Basins in South Central Arizona and Parts of Adjacent States cover page

The alluvial basins described in this report include about 82,000 square miles in south-central Arizona and parts of adjacent States. The area is composed of 72 basins that are virtually independent hydrologic systems.

Thumbnail image of Invitation to Become a Participating Agency on the Environmental Review of the Resolution Copper Project letter

Response from the United States Geological Survey (USGS) to take part in the environmental review of the Resolution Copper Project and Land Exchange Environmental Impact Statement (EIS) as a participating agency.

Thumbnail image of Dynamics of Mojave Desert shrub assemblages in the Panamint Mountains first page

We studied shrub communities in the Panamint Mountains of the Mojave Desert to determine whether vegetational changes after disturbance can be characterized as "succession" according to modern successional theory. We found, on a variety of disturbed and undisturbed sites, that the rate of change was a function of the type and age of disturbance.

Thumbnail image of The Response of Vegetation to Disturbance in Death Valley bulletin cover

The response of desert plant assemblages to disturbance was studied in Death Valley National Monument, California. Plant assemblages on debris flows, alluvial terraces, five abandoned townsites, and a pipeline corridor were measured to quantify recovery rates and to develop a model of change in desert vegetation.

Thumbnail image of Perennial Vegetation Data from Permanent Plots on the Nevada Test Site report cover

Perennial vegetation data from 68 permanent plots on the Nevada Test Site, Nye County, Nevada, are given for the period of 1963 through 2002.

Thumbnail image of StreamStats Arizona webpage

Screenshot of StreamStats webpage

Thumbnail image of Routine United States Mining Seismicity webpage

The current on-line catalog also lists, for some regions of the U.S., mining events that were located by regional networks prior to August 2013 and that were not originally listed in catalogs produced by the USGS/NEIC.

Thumbnail image of Quaternary Fault and Fold Database of the United States webpage

This database contains information on faults and associated folds in the United States that demonstrate geological evidence of coseismic surface deformation in large earthquakes during the Quaternary (the past 1.6 million years).

Pages

Media Point of Contact

Amanda Oliver
amanda.oliver@usda.gov

Apache Leap Special Management Area
Apache Leap SMA website