Water Resources

Measuring and Monitoring Water

Hydrologic Instrumentation Facility (HIF)

Hydrologic Instrumentation Facility (HIF)

The HIF provides quality hydrologic equipment and instrumentation

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Streamgaging Basics

Streamgaging Basics

The USGS has a nationwide network of over 8,500 sites that measure streamflow and water levels.

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Filter Total Items: 160
Date published: February 28, 2019
Status: Active

Historical Flooding

The USGS provides practical, unbiased information about the Nation's rivers and streams that is crucial in mitigating hazards associated with floods. This site provides information about the USGS activities, data, and services provided during regional high-flow events, such as hurricanes or multi-state flooding events. The USGS response to these events is typically managed by the National...

Date published: February 28, 2019
Status: Active

National Field Manual for the Collection of Water-Quality Data (NFM)

The National Field Manual for the Collection of Water-Quality Data (NFM) provides documented methods and protocols for USGS field personnel who collect water-quality data. The NFM provides detailed, comprehensive, and citable procedures for sampling water resources, processing samples for analysis of water quality, measuring field parameters, and specialized procedures.

Attribution: Water Resources
Date published: February 28, 2019
Status: Completed

Trace Metals in San Francisco Bay Clams

The clams Potamocorbula amurensis and Corbicula fluminea were collected at a variety of sites in the San Francisco Bay/ Delta beginning July 1990 and ending February 2010. These invasive species were used as biosentinels of the fate, transport, and effects of trace metals in the San Francisco Bay ecosystem.

Contacts: Jessica Dyke
Attribution: Water Resources
Date published: February 28, 2019
Status: Completed

Groundwater Quality in Principal Aquifers of the Nation, 1991–2010

What’s in your groundwater? Learn about groundwater quality in the Principal Aquifers of nine regions across the United States in informative circulars filled with figures, photos, and water-quality information.

Attribution: Water Resources
Date published: February 28, 2019
Status: Active

Health-Based Screening Levels (HBSLs)

This searchable online database provides Health-Based Screening Levels (HBSLs) for hundreds of chemicals, including  pesticides and degradates. HBSLs are non-enforceable benchmark concentrations of contaminants in water. These screening levels supplement federal drinking-water standards and guidelines.

Attribution: Water Resources
Date published: February 28, 2019
Status: Active

Coastal Carolinas Focus Area Study

The USGS is undertaking a 3-year study of water availability and use to investigate competing societal and ecological needs in Southeastern Atlantic Coastal Basins of the Carolinas. This study will compile existing information, add new scientific data and interpretation, and develop tools to help resource managers and stakeholders address current and future water-use challenges.

Attribution: Water Resources
Date published: February 28, 2019
Status: Active

Red River Focus Area Study

The USGS is undertaking a 3-year study of water use, availability, and change in the Red River basin, which covers more than 93,000 square miles in New Mexico, Texas, Oklahoma, Arkansas, and Louisiana. Water resources are being stressed by increasing water demands and increasingly severe droughts, and a comprehensive water-resource assessment of the basin is needed to enable sustainable water...

Attribution: Water Resources
Date published: February 28, 2019
Status: Completed

Apalachicola-Chattahoochee-Flint River Basin Focus Area Study

As one of several National Focus Area Studies within the USGS National Water Census (NWC) the USGS completed a 3-year study of water availability and use in the Apalachicola-Chattahoochee-Flint (ACF) River Basin.

Attribution: Water Resources
Date published: February 28, 2019
Status: Active

Upper Rio Grande Basin Focus Area Study

USGS is undertaking a 3-year study of water use, availability, and change in the Upper Rio Grande Basin. This study area runs 670 miles from its headwaters in Colorado through New Mexico and northern Mexico to Texas, and will compile existing information and add new scientific data and interpretation to help stakeholders face current and future water issues.

Attribution: Water Resources
Date published: February 28, 2019
Status: Completed

Delaware River Basin Focus Area Study

As one of several National Focus Area Studies within the USGS National Water Census (NWC), the USGS completed a 3-year study of water availability and use in the Delaware River Basin.

Attribution: Water Resources
Date published: February 28, 2019
Status: Active

Groundwater Quality—Current Conditions and Changes Through Time

Is groundwater the source of your drinking water? The USGS is assessing the quality of groundwater used for public supply using newly collected data along with existing water-quality data. Learn more about this invisible, vital resource so many of us depend on.

Contacts: Bruce Lindsey
Date published: February 28, 2019
Status: Active

Rapid Fluctuations in Groundwater Quality

We think of groundwater as moving slowly, and groundwater quality as changing slowly—over decades or even centuries. But in some parts of some aquifers, groundwater quality can fluctuate rapidly, sometimes over just a few hours. Are such changes part of a long-term trend, or just part of a short-term cycle? And what does that mean for suitability for drinking?