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Groundwater flow
Movement of subsurface water in the saturated zone from areas of recharge to areas of discharge.
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Results 1 - 48 of 48 listed alphabetically [list by similarity]
Amargosa Desert research site [More info]
Online reports, site description and photographs of the Amargosa Desert research site monitoring low level radioactive waste.
PDF Assessing the Vulnerability of Public-Supply Wells to Contamination: Central Valley Aquifer System near Modesto, California [More info]
Using ground-water geochemical analyses, and mathematical models, the factors affecting the quality of public water supply were identified as pumping schedule, screened interval, past land use within the recharge area, and natural geochemical conditions.
PDF Assessing the Vulnerability of Public-Supply Wells to Contamination: Floridan Aquifer System Near Tampa, Florida [More info]
Using ground-water geochemical analyses and mathematical models, the factors affecting the quality of public water supply were identified as mixing of very recent recharge with older water, karst features, natural geochemical processes, and pumping.
PDF Assessing the vulnerability of public-supply wells to contamination: Rio Grande aquifer system in Albuquerque, New Mexico [More info]
Explains the natural and human-affected factors that determine the concentration of contaminants in groundwater, especially where the concentration is different at the surface than at depth, and where pumping varies with time.
BRASS: Bedrock Regional Aquifer Systematics Study [More info]
Description of the project to publish new bedrock geologic maps in the United States to advance the understanding of the region's bedrock aquifers. Includes list of projects.
Borehole geophysics as applied to geohydrology [More info]
Project summary, photos of logging truck, and bibliographies on log interpretation techniques and instrumentation to record geophysical data in wells and test holes for studying ground water hydraulics and evaluate waste disposal sites.
PDF Characterization of Fish Creek, Teton County, Wyoming, 2004-08 [More info]
Preliminary results of hydrologic and biological sampling confirm anecdotal reports that this stream shows unusually high algal growth due to elevated nutrients, probably from groundwater.
Contamination in Fractured Rock Aquifers [More info]
Overview of fractured rock research aimed at understanding the movement of water through fracture networks, and characterize field conditions influencing contaminant migration. Includes programs and publications.
PDF Decadal-scale changes in dissolved-solids concentrations in groundwater used for public supply [More info]
Recent increases in dissolved-solids concentrations in this aquifer have been documented in some areas used for public supply, raising concerns as to the sources and causes of the higher concentrations and the long-term effects on groundwater quality.
PDF Demonstrating usefulness of real-time monitoring at streambank wells coupled with active streamgages - Pilot studies in Wyoming, Montana, and Mississippi [More info]
To better understand the exchange of groundwater and surface water, we coupled groundwater monitoring at the stream bank with nearby gages in the stream. Describes the procedure and results from several areas.
Edwards Aquifer online resources [More info]
Recharge and discharge summaries and other data, aeromagnetic survey map, and publications on Edwards Aquifer, Texas.
PDF Enhancement of USGS scientific investigations in Texas by using geophysical techniques, 2005-10 [More info]
Annotated bibliography describing the use of electromagnetic surveying to understand the characteristics of aquifers and how they work.
PDF Evolution of 3-D geologic framework modeling and its application to groundwater flow studies [More info]
Methods to depict the connectedness of rock units across fault and fracture zones, allowing us to determine the distribution of geologic units, structural features, and other controlling factors, such as porosity and permeability.
PDF Field techniques for estimating water fluxes between surface water and ground water [More info]
A guide to measuring the flow of water across the ground water surface water interface, with an overview of available methods and details of specific methods to use.
PDF Geochemistry of the Arbuckle-Simpson Aquifer [More info]
Describes the geographic extent, quality, origin, and dynamic character of this aquifer located in south central Oklahoma.
Great Lakes issues [More info]
Water resources problems of the Great Lakes including water use, bacterial contamination on beaches, status of water resources, and ground water flow.
Ground water information pages [More info]
Lead page to connect to ground water information on the Nation's ground water resources and ground water activities of the USGS. Includes links to ground-water data, news reports, publications, field techniques, models, programs, and issues.
Ground-water data for the Nation [More info]
National Water Information System (NWIS) real-time data on selected ground water sites, ground water level data, site inventory of wells, test holes, drains, springs and excavations and ground water-quality data for the United States.
Ground-water flow and other computer simulations for Utah [More info]
Identifies computer models in USGS publications developed to study ground water for many areas of Utah.
Ground-water monitoring for pesticides in Wyoming [More info]
Sampling program to determine if pesticides are present in ground water, in accordance with Wyoming's Generic State Management Plan for Pesticides in Ground Water (SMP).
PDF Groundwater recharge in Wisconsin--Annual estimates for 1970-99 using streamflow data [More info]
The groundwater component of streamflow is important because it is indicative of the sustained flow of a stream during dry periods, is often of better quality, and has a smaller range of temperatures, than surface contributions to streamflow.
High Plains aquifer resources and information [More info]
Links to reports, bibliographies, and other information on the High Plains aquifer.
Hydrogeologic framework of Antelope Valley and Bedell Flat, Washoe County, west-central Nevada [More info]
Description of the hydrogeologic framework of Antelope Valley and Bedell Flat in west-central Nevada north of Reno-Sparks area. Gravimetric and seismic-refraction methods were used in the study. Report available in PDF format or HTML format.
Methow River Basin [More info]
Description of studies conducted to evaluate the surface water, ground water, water interactions, and water quality of Methow River Basin in Washington. With links to related science topics, datasets, maps, project summaries, and news.
New Jersey District - ground water information [More info]
Links to New Jersey ground-water data including hydrogeology with a geologic map and description of major aquifers, water levels including real-time data and drought levels, and water-quality information.
Pennsylvania fractured rock hydrology research [More info]
Links to reports for Pennsylvania on borehole geophysical studies, aquifer tests and properties, modeling, and hydrologic effects of an earthquake with links to MOC3D solute transport software package, program mission, and bibliography.
PDF SEAWAT: A Computer Program for Simulation of Variable-Density Groundwater Flow and Multi-Species Solute and Heat Transport [More info]
Software based on the MODFLOW modeling framework, used for studies of saltwater intrusion coastal aquifers, storage and recovery in brackish limestone aquifers, and brine migration in continental aquifers.
Surface-water quality and flow Modeling Interest Group (SMIG) [More info]
The USGS Surface-water quality and flow Modeling Interest Group (SMIG) is interested in surface-water quality and flow modeling activities with links to articles, model archives, data archives, clearinghouse, mailing list, classes, and meetings.
Trichloroethylene (TCE) in fractured bedrock, Naval Air Warfare Center, Trenton, N.J. [More info]
Research on contamination by trichloroethylene (TCE) in fractured rock at the Naval Air Warfare Center in Trenton, N.J. with links to site description, bibliography, online reports, and findings.
USGS develops geophysical methods to improve remediation monitoring and site characterization [More info]
Short news article describing the use of electrical resistivity tomography to improve imaging of tracer flow in ground water.
Unsaturated-Zone Flow Project [More info]
Overview of research to measure, predict, and understand the flow of water through soil and rock between the land surface and the water table with links to field sites, laboratory methods, theoretical developments, publications, and personnel.
Water science for schools: the Earth's water - ground water [More info]
Educational site for elementary schools students on ground water sources, ground water flow, and aquifers.
PDF Water-resources activities of the U.S. Geological Survey in Ohio [More info]
Report on recent USGS programs in Ohio related to water resources studies, with program highlights, flood and drought studies, ground water studies, microbiological water quality research, stream data, and recent publications.
PDF Watershed modeling applications in south Texas [More info]
Explains how mathematical simulations of watershed properties can help us understand the likely behavior of the water systems, putting the choices available to people in better perspective.
PDF Watershed scale response to climate change--Black Earth Creek Basin, Wisconsin [More info]
Mathematical models predict overall streamflow, runoff, subsurface flow, groundwater flow, and soil moisture in this area in response to four different greenhouse gas emission scenarios.
PDF Watershed scale response to climate change--Cathance Stream Basin, Maine [More info]
Mathematical models predict overall streamflow, runoff, subsurface flow, groundwater flow, and soil moisture in this area in response to four different greenhouse gas emission scenarios.
PDF Watershed scale response to climate change--Clear Creek Basin, Iowa [More info]
Mathematical models predict overall streamflow, runoff, subsurface flow, groundwater flow, and soil moisture in this area in response to four different greenhouse gas emission scenarios.
PDF Watershed scale response to climate change--East River Basin, Colorado [More info]
Mathematical models predict overall streamflow, runoff, subsurface flow, groundwater flow, and soil moisture in this area in response to four different greenhouse gas emission scenarios.
PDF Watershed scale response to climate change--Feather River Basin, California [More info]
Mathematical models predict overall streamflow, runoff, subsurface flow, groundwater flow, and soil moisture in this area in response to four different greenhouse gas emission scenarios.
PDF Watershed scale response to climate change--Flint River Basin, Georgia [More info]
Mathematical models predict overall streamflow, runoff, subsurface flow, groundwater flow, and soil moisture in this area in response to four different greenhouse gas emission scenarios.
PDF Watershed scale response to climate change--Naches River Basin, Washington [More info]
Mathematical models predict overall streamflow, runoff, subsurface flow, groundwater flow, and soil moisture in this area in response to four different greenhouse gas emission scenarios.
PDF Watershed scale response to climate change--Pomperaug River Watershed, Connecticut [More info]
Mathematical models predict overall streamflow, runoff, subsurface flow, groundwater flow, and soil moisture in this area in response to four different greenhouse gas emission scenarios.
PDF Watershed scale response to climate change--Sagehen Creek Basin, California [More info]
Mathematical models predict overall streamflow, runoff, subsurface flow, groundwater flow, and soil moisture in this area in response to four different greenhouse gas emission scenarios.
PDF Watershed scale response to climate change--Sprague River Basin, Oregon [More info]
Mathematical models predict overall streamflow, runoff, subsurface flow, groundwater flow, and soil moisture in this area in response to four different greenhouse gas emission scenarios.
PDF Watershed scale response to climate change--Starkweather Coulee Basin, North Dakota [More info]
Mathematical models predict overall streamflow, runoff, subsurface flow, groundwater flow, and soil moisture in this area in response to four different greenhouse gas emission scenarios.
PDF Watershed scale response to climate change--Trout Lake Basin, Wisconsin [More info]
Mathematical models predict overall streamflow, runoff, subsurface flow, groundwater flow, and soil moisture in this area in response to four different greenhouse gas emission scenarios.
PDF Watershed scale response to climate change--Yampa River Basin, Colorado [More info]
Mathematical models predict overall streamflow, runoff, subsurface flow, groundwater flow, and soil moisture in this area in response to four different greenhouse gas emission scenarios.
Yakima River Basin [More info]
Description of the studies of the ground water system in the Yakima River Basin and how it interacts with rivers and streams in the basin. Includes links to project status, datasets, maps, project summaries, news releases and bibliographies.
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