Water Resources

Filter Total Items: 164
Date published: January 1, 2017
Status: Completed

Lower Granite Reservoir Bathymetric and Underwater Video Surveys

Sedimentation of Lower Granite Reservoir, operated by the U.S. Army Corps of Engineers, affects commercial navigation and reservoir storage capacity. Some groups are concerned that dredging the reservoir to remove excess sediment may negatively affect endangered species such as steelhead and salmon.

Contacts: Ryan L Fosness
Date published: January 1, 2017
Status: Completed

Lower Granite Reservoir Bed Sediment Coring and Analysis

Some groups are concerned that dredging the reservoir and the confluence of the Snake and Clearwater Rivers to remove excess sediment may mobilize contaminants in sediment that could negatively affect endangered species such as steelhead and salmon.

Contacts: Ryan L Fosness
Date published: January 1, 2017
Status: Completed

Sediment Sampling in the Snake and Clearwater River Basins

Are there ways to manage sediment before it accumulates in Lower Granite Reservoir? If so, resource managers must know exactly how much sediment is being transported in the lower Snake and Clearwater River basins, the grain-size distribution of the sediment that is being transported, which subbasins are contributing the most sediment, and how the sediment is being deposited once it is...

Date published: December 3, 2016

Erosion and Invasive Saltcedar

Formation of arroyos in the late 1800s greatly increased erosion across the southwestern United States. Since the 1930s, however, this erosion has decreased, partly because of bank stabilization by introduced saltcedar. With Isleta Pueblo Indian Nation, the Aquatic Systems Branch developed a new sediment dating method using saltcedar tree rings. We applied the method in a landmark study of...

Date published: October 26, 2016
Status: Active

Economics and Ecosystem Services

Federal policymakers and land managers are accountable to the public for how they use public resources and for the outcomes of policy and management decisions. Through a variety of economic analyses and custom modeling, SEA economists evaluate how investments and management decisions affect individuals, local communities, and society as a whole.

Date published: September 29, 2016

Structure maps of the Carrizo-Wilcox aquifer in northwestern Louisiana

Groundwater resources in northwestern Louisiana may be needed for development of natural gas production from the Haynesville Shale. Use of groundwater for hydro-fracturing of the shale may lower water levels and alter groundwater flow directions in the Carrizo-Wilcox aquifer and other local aquifers. Regional maps of aquifers in northwestern Louisiana are unavailable. The LaWSC, in cooperation...

Date published: September 28, 2016

Water Use Trends in Alabama

Since 1950 when the U.S. Geological Survey (USGS) first conducted water-use compilations, important changes in water use have occurred in Alabama. The early part of the history (1950 to 1980) showed a steady increase in water use. During this time, the expectation was that, as the population increased, so would water use. Contrary to this expectation, reported water withdrawals declined in...

Date published: September 26, 2016

Lower Tennessee River (LTEN) Basin Study

Welcome....the Lower Tennessee River Basin in Tennessee, Alabama, Georgia, Kentucky, and Mississippi is one of the 59 study units that are part of the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program.The long-term goals of this program are to describe the status and trends in the quality of a large, representative part of the Nation's surface- and ground-water...

Date published: September 24, 2016

Bacterial Pathogens

The U.S. Geological Survey (USGS) Michigan Bacteriological Research Laboratory (MI-BaRL) studies the source, occurrence, and distribution of the bacterial pathogens Shiga-toxin producing E. coli (STEC), Salmonella, Shigella, Campylobacter, Enterococcus, and Staphylococcus and the relation of occurrence of pathogens with fecal indicator bacteria, land-use, season, hydrology, geology, weather...

Contacts: Natasha Isaacs
Date published: September 24, 2016

Avian Botulism in Distressed Great Lakes Environments

Botulism outbreaks occur within the Great Lakes and often result in significant bird die offs. It is believed that Clostridium botulinum is the reason for these die offs and the trophic pathways that this organism travels are of interest to understanding its place within the food web. The GLRI Avian Botulism Project is investigating six different matrices: sediment, Cladophora, invertebrates,...

Contacts: Natasha Isaacs
Date published: September 24, 2016

Michigan Bacteriological Research Laboratory (MI-BaRL)

The U.S. Geological Survey (USGS) Michigan Bacteriological Research Laboratory (MI-BaRL) is a newly renovated laboratory space operated by the USGS Michigan Water Science Center in Lansing, MI. The laboratory is staffed by two Ph.D. level microbiologists and five M.S. level microbiologists with a combined 70 years of experience in microbiology and water resources research. The USGS MI-BaRL...

Contacts: Natasha Isaacs
Date published: September 24, 2016

Determine Baseline and Sources of Contaminant Loadings to the Great Lakes

To better understand the quality of water flowing into the Great Lakes, the USGS is conducting water-quality analyses for nutrients, sediment, and toxic substances and estimating the amount (load) of these substances for tributaries to the Great Lakes. Information on the occurrence and distribution of contaminants is needed to provide baseline information, measure progress towards restoration...

Contacts: Daniel Obenauer