United States of America

Filter Total Items: 3,179
Date published: January 2, 2011
Status: Completed

Chehalis River Basin

The Chehalis River flows approximately 125 miles in southwestern Washington north-northwesterly to Grays Harbor and the Pacific Ocean, draining an area of approximately 2,700 square miles. The Chehalis River Basin is the second largest basin in Washington State. It is bounded on the west by the Pacific Ocean, on the east by the Deschutes River Basin, on the north by the Olympic Mountains, and...

Date published: January 1, 2011
Status: Completed

Lake Roosevelt-Upper Columbia River

Lake Roosevelt was formed on the Columbia River by the construction of the Grand Coulee Dam, and extends a total of 217 km to within 24 km of Canada The lake is heavily contaminated with trace elements that were discharged as slag material from a smelter in Canada; approximately 360 metric tons were discharged per day from 1900 to 1998. A study by the USGS reported that Lake Roosevelt bed...

Date published: December 21, 2010

Bedford County Water Monitoring Network

Bedford County consists of 764 square miles in the west-central portion of Virginia's central plateau. Its boundaries include the Blue Ridge Mountains on the west, the James River on the northeast and Smith Mountain Lake on the south, and Campbell County on the east. The area has a rolling to hilly terrain with elevations from 800 feet to 4,200 feet above sea level. The County contains the...

Contacts: Kurt McCoy
Date published: December 19, 2010
Status: Completed

RCMAP - Gunnison River at Spann Diversion at Gunnison, Colorado

The U.S. Geological Survey was engaged in a program to monitor and assess the long-term geomorphic behavior of selected river and stream reaches that previously had undergone some physical modification.  These modifications included natural channel adjustments to floods as well as intentional channel reconfigurations to alter the function or appearance of a river reach.


Date published: October 25, 2010

Virginia Chloride Monitoring Network

Objectives of the program are to (1) evaluate the spatial and temporal distribution of chloride concentrations in the aquifers, (2) evaluate the factors that affect the spatial and temporal distributions of chloride, and (3) assess the potential for upconing or lateral intrusion of saline water in the aquifers.

Date published: October 1, 2010
Status: Active

Flood Database for Colorado

The U.S. Geological Survey, in cooperation with the Colorado Department of Transportation, created a Web-based geodatabase for information on floods from 1867 through water year 2015 and information on paleofloods occurring in the past 5,000 to 10,000 years.  The geodatabase was created using Environmental Systems Research Institute ArcGIS JavaScript Application Programing Interface. Engineers...

Date published: September 28, 2010
Status: Completed

COOK NAWQA Data Clearinghouse

This page will serve as the repository for data collected by the Cook Inlet Basin NAWQA team using NAWQA sampling protocols. Data sets collected using NAWQA protocols but not collected as part of the Cook Inlet Basin NAWQA program are identified with an asterisk (*). A list of ...

Contacts: Jeff Conaway
Date published: September 26, 2010
Status: Active

Coastal Plain Culvert Study

Various environmental groups in Alabama are concerned that the use of culverts at highway crossings to convey stream flows has detrimental effects on the natural conditions of streams. Specifically, some groups are concerned that changes in stream geomorphology, sediment concentrations, and associated turbidity adversely impact the benthic macroinvertebrate community when culverts are...

Date published: August 24, 2010
Status: Active

Virginia Coastal Plain Aquifer Analysis

Groundwater is a heavily used source of water in the Virginia Coastal Plain. Long term and widespread groundwater withdrawals have resulted in regional water-level declines, and created the potential for saltwater intrusion. Sound management of this vital resource relies on continual improvement of the scientific understanding of the aquifer system.

Date published: June 3, 2010
Status: Active

Assessing the Influence of the Davis Pond Freshwater Diversion on Water-Quality in Waterways and Marshes of Barataria Preserve

In 2002, the Davis Pond Freshwater Diversion began diverting up to 10,000 cfs of Mississippi River water into the waters surrounding the Barataria Preserve of the Jean Lafitte National Historical Park and Preserve. Previously, precipitation, local surface-water runoff, and occasional marine intrusion largely determined quality of surface and marsh porewaters at the Preserve. The new influx of...

Date published: May 25, 2010

South River Mercury TMDL

The objective of the South River Mercury TMDL study is to develop a better understanding of methyl mercury cycling in the South River and calculate mercury loading reductions that would protect fish from high mercury concentrations.

Date published: March 31, 2010

Continuous Water-Quality Monitoring for the Roanoke River Flood Reduction Project

This project:

- Initiates a continuous water-quality monitoring study for the Roanoke River in the area upstream and downstream of the RRFRP project area. 
- Provides a mechanism for detecting short- and long-term changes in Roanoke River suspended sediment water quality during and after the RRFRP implementation.
- Assesses trends in suspended sediment water quality in this...