United States of America

Filter Total Items: 3,231
Date published: January 1, 2014
Status: Completed

Coeur d'Alene Lake Water Budget

Development around Coeur d'Alene Lake has accelerated over the past 25 years. Commercial and residential development adjacent to the lake plus demands for irrigation, recreation, and hydropower raise concerns about the potential for declining lake levels.

A comprehensive lake water budget helps resource managers determine the possible effects of growth on lake levels.

Contacts: Molly A Maupin
Date published: January 1, 2014
Status: Completed

Coeur d'Alene Lake Water Quality

The mining district in the South Fork Coeur d’Alene River valley was among the Nation’s largest producers of silver, lead, zinc, and other metals from the 1880s to the 1980s. These activities have produced large quantities of waste material that contain environmentally hazardous contaminants such as cadmium, lead, and zinc. Much of this material has been discharged directly to or washed into...

Date published: December 20, 2013

Ecological limit functions relating fish community response to hydrologic departures of the ecological flow regime in the Tennessee River basin, United States

Ecological limit functions relating streamflow and aquatic ecosystems remain elusive despite decades of research. We investigated functional relationships between species richness and changes in streamflow characteristics at 662 fish sampling sites in the Tennessee River basin. To learn more visit: http://onlinelibrary.wiley.com...

Date published: December 3, 2013
Status: Completed

South Platte Groundwater Analysis

The South Platte River and underlying alluvial aquifer form an important hydrologic resource in northeastern Colorado that provides water to population centers along the Front Range and to agricultural communities across the rural plains. Water is regulated based on seniority of water rights and delivered using a network of administration structures that includes ditches, reservoirs, wells,...

Contacts: Suzanne Paschke
Date published: December 1, 2013

A Bibliography of All Known Publications & Reports on the Gulf Sturgeon Acipenser oxyrinchus desotoi (through 31 December 2013)

This functional bibliography is meant to be a complete and comprehensive bibliography of all discoverable reports containing information on the Gulf Sturgeon (GS). This bibliography contains all known reports presenting, documenting, summarizing, listing, or interpreting information on the GS through 31 December 2013.

Date published: September 30, 2013
Status: Completed

Basement Tectonic Framework of the U.S.: Role of Cratonization of Juvenile Crust and Structural Modification in Forming Metallogenic Provinces

Project objectives were to publish a map of the nation's geologic basement. The map portrayed these pieces (domains) from the most ancient to recent, by the events that influenced their composition, starting with their origin. 

Date published: September 4, 2013
Status: Completed

SAFRR Tsunami Scenario

The third SAFRR scenario is initiated by a magnitude 9.0 megathrust earthquake in the eastern Aleutian Islands, an event presenting a hypothetical but plausible distant-tsunami threat to southern and central California. USGS and other federal and state agencies entities developed the SAFRR Tsunami Scenario. The scenario describes wave heights, current velocities and inundation for the coast of...

Date published: August 27, 2013

Testing for Agricultural Runoff in the Missouri River - Video

Ride along as USGS scientists Richard Coupe and Joe Schatz sample the Missouri River near Hermann, Missouri. To view the video click here.

Date published: August 8, 2013
Status: Completed

ARkStorm

The SAFRR project’s second scenario, called ARkStorm, addresses massive U.S. West Coast storms analogous to those that devastated California in 1861–62. Storms of this magnitude are projected to become more frequent and intense as a result of climate change. The SAFRR project assembled experts from scientific research agencies to design the large, but scientifically plausible, hypothetical...

Date published: May 24, 2013
Status: Active

Iron Mountain: An Extraordinary and Extreme Environment

At its peak production, Iron Mountain ranked as the tenth largest copper production site in the world, sixth in the U.S. and first in California. During its operation, from 1879 - 1963, ten different mines throughout the site's 4,400 acres were the source of not just copper, but also silver, iron, gold, zinc and pyrite (iron sulfide).

A century of active mining at Iron Mountain took an...

Date published: April 25, 2013
Status: Active

Webinar: From Icefield to Ocean: Impacts of Glacier Change in Alaska

Check out this webinar to learn more about glacial loss in the Gulf of Alaska.

Contacts: Shad O'Neel, Ph.D., Eran Hood
Date published: April 21, 2013

Agriculture - A River Runs Through It

Heather Welch, Claire Rose, and Richard Coupe, U.S. Geological Survey scientists involved in the National Water Quality Assessment (NAWQA) Study of Agricultural Chemical Transport (ACT) study, outline agricultural effects on water quality in the Mississippi Delta region. Topics include research results on nutrient modeling using the SPARROW model, environmental effects of biofuel production,...