Water Resources

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The Water Cycle

Water is constantly moving through the hydrologic cycle

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Filter Total Items: 152
Date published: February 22, 2019
Status: Completed

A Bioreactor for the Oxidation of the Fumigant Methyl Bromide, US Patent 6,916,446

Methyl halide contaminants are oxidized in a reaction chamber containing a methylotrophic bacterium through direct oxidation of the methyl halide contaminant. (Full details provided by the U.S. Patent and Trademark Office website.)

Attribution: Water Resources
Date published: February 22, 2019
Status: Completed

Sorbant Sequestration and Removal of Toxic Metal Ions, US Patent 6,896,813

A matrix for water decontamination has an amended sorbant cellulose substrate with an iron (ferric) oxyhydroxide component and a component to sorb dissolved organic compounds retained by the cellulose substrate. (Full details provided by the U.S. Patent and Trademark Office website.)

Attribution: Water Resources
Date published: February 22, 2019
Status: Completed

Small-Scale, Hydrogen-Oxidizing Denitrifying Bioreactor, US Patent 6,863,815

A method for treating nitrate-contaminated water comprising treating said water with hydrogen-oxidizing denitrifying bacteria in the presence of hydrogen. (Full details provided by the U.S. Patent and Trademark Office website.)

Attribution: Water Resources
Date published: February 22, 2019
Status: Completed

Deep Aquifer Remediation System, US Patent 6,458,271

A groundwater decontamination system includes a decontamination unit adapted to be lowered down through a non-pumping well into an aquifer containing contaminated water. (Full details provided by the U.S. Patent and Trademark Office website.)

Attribution: Water Resources
Date published: February 22, 2019
Status: Completed

Aquifer Remediation Barrier for Removal of Inorganic Contaminants, US Patent 6,428,695

A permeable barrier for decontaminating groundwater having two distinct components for increasing contaminant removal. Preferably, the barrier material is a mixture or distinct layers of bone-char phosphate material and iron oxide pellets. (Full details provided by the U.S. Patent and Trademark Office website.)

Attribution: Water Resources
Date published: February 22, 2019
Status: Completed

Crystallization of Powders Having Uniform Particle Sizes by Ostwald Ripening at Large Levels of Supersaturation, US Patent 6,379,459

A method is provided for the manufacture of mineral power crystals having a uniform mean size. The method includes forming a solution which is highly supersaturated with respect to the crystals. (Full details provided by the U.S. Patent and Trademark Office website.)

Attribution: Water Resources
Date published: February 22, 2019
Status: Completed

Method for Enhancing Oxidation of Methyl Bromide With Strain IMB-1 (ATCC 202197) During Agricultural Fumigations, US Patent 6,013,254

A method is provided for enhancing oxidation of methyl bromide during agricultural fumigations of fields using a fumigant containing methyl bromide. The method comprises adding a methylotrophic bacterium to the soil in an amount effective to provide bacterial oxidation of the methyl bromide. (Full details provided by the U.S. Patent and Trademark Office website.)

Attribution: Water Resources
Date published: February 22, 2019
Status: Completed

Selenate Removal from Waste Water, US Patents 5,271,831 and 5,009,786

A method and apparatus for removing selenate from waste water through the use of selenate respiring microorganisms under substantially anoxic conditions is described. The method includes a first zone for removing nitrate by assimilation into biomass.  (Full details available at the U.S. Patent and Trademark Office website for patents ...

Attribution: Water Resources
Date published: October 26, 2018
Status: Completed

Karst Aquifers

This website presents information on USGS research on karst aquifers, a vital groundwater resource in the United States.

Attribution: Water Resources
Date published: October 25, 2018
Status: Archived

USGS Mine Drainage Activities

The USGS Mine Drainage Activities website (now archived) promoted communication, cooperation, and collaboration among interdisciplinary USGS scientists working on problems related to mining and the environment. It contains catalogs of past mining-related projects, activities, and publications.

Attribution: Water Resources
Date published: October 16, 2018
Status: Completed

Colorado River Basin Focus Area Study

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

Attribution: Water Resources
Date published: September 17, 2018
Status: Active

Water-Quality Trends

Is water quality getting better or worse?  Answering this deceptively simple question has been a fundamental objective of the USGS National Water-Quality Assessment Project’s research. Learn about trends in contaminants in the nation’s streams and rivers, trends in contaminants that collect in the bed sediment of streams and lakes, and changes in the quality of the nation’s groundwater.

Contacts: Barbara Mahler