Water Resources

Filter Total Items: 161
Date published: January 2, 2017
Status: Completed

Wood River Valley Hydrologic Trends and Comparisons

Wood River Valley residents rely on groundwater for domestic supply, either from domestic or municipal-supply wells. The rapid population growth since the 1970s has caused concern about the long-term sustainability of the groundwater resource.

Date published: January 1, 2017
Status: Completed

Effects of Nutrient Enrichment on Stream Ecosystems (Upper Snake River Basin NAWQA)

Nutrient enrichment can affect the ecological health of a stream. For example, excessive aquatic plant growth caused by increased nutrients can reduce dissolved oxygen necessary for other aquatic life. Topics of particular interest in this study area include:

seasonal patterns among nutrients, flows, algae and plants in streams

rooted aquatic plant vs. algae growth

stream...

Date published: January 1, 2017
Status: Completed

Debris-Flow Hazard Assessment of the Area Burned by the 2013 Beaver Creek Fire

In August 2013, the Beaver Creek wildfire burned more than 100,000 acres of public and private land northwest of Hailey, Idaho. According to the U.S. Forest Service, about 57 percent of the area is considered moderately burned, and the risk of post-fire soil erosion is high on more than 8,400 acres.

Date published: January 1, 2017
Status: Completed

Surrogate Technologies for Estimating Suspended Sediment in the Snake and Clearwater Rivers

Because fluvial sediment poses both economic and ecological problems, resource managers need a safe, cost-effective way to measure sediment in streams, particularly in remote areas.

Contacts: Ryan L Fosness
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

Economics and Ecosystem Services

Federal policymakers and land managers are accountable to the public for how they invest public funds and for the outcomes of the policy and management decisions they make. 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...