Water Resources

Filter Total Items: 294
Date published: March 2, 2019
Status: Active

National Water Census: Water Use

Through the National Water Census, USGS will provide more comprehensive reporting of national information on withdrawal, conveyance, consumptive use, and return flow by water-use category. Water-use data enables water managers to plan more strategically and enables the analysis of trends of over time. It is also vital to water-availability studies such as watershed and groundwater models.

Date published: March 2, 2019
Status: Active

National Water Census: Environmental Flows

Environmental water studies refer to understanding the quantity, timing, and quality of water flows, as well as the water levels and storage required to sustain freshwater and estuarine ecosystems and the human livelihoods that depend on these ecosystems. The concept of ‘environmental flows’ in stream ecology are the basis of these studies, but they go beyond the understanding of surface flows...

Attribution: Water Resources
Date published: March 2, 2019
Status: Active

National Water Census: Evapotranspiration

No water budget would be complete without accounting for evaporation and related processes, such as transpiration and sublimation. Evapotranspiration, or "ET," refers to the combined flux of plant transpiration and evaporation from the adjacent soil. It is especially important for understanding water used by irrigated crops, and is related to crop productivity. Consumptive water use for...

Attribution: Water Resources
Date published: March 2, 2019
Status: Active

National Water Census: Focus Area Studies

Focus Area Studies are stakeholder-driven assessments of water availability in river basins with known or potential conflict. They contribute toward ongoing assessments of water availability in large watersheds, provide opportunities to test and improve approaches to water availability assessment, and inform and ground truth the National Water Census with local information. Common to each of...

Attribution: Water Resources
Date published: March 2, 2019
Status: Active

Agriculture and the Quality of the Nation's Waters

Intensive studies by the USGS National Water-Quality Assessment (NAWQA) Project in agricultural areas provide insight into how agricultural activities have altered the natural flow of water and the way that agricultural chemicals enter streams and aquifers, and in particular how nutrients affect algal and invertebrate communities in agricultural streams.

Attribution: Water Resources
Date published: March 2, 2019
Status: Active

Acid Rain

The USGS has been at the forefront of studying the impacts of acid rain for decades. How does acid rain form? What does it do to the landscape? Can it burn you like battery acid? Keep reading to find out more...

Attribution: Water Resources
Date published: March 2, 2019
Status: Active

Agricultural Contaminants

About 40 percent of the land in the United States is used for agriculture, and agriculture supplies a major part of the our food, feed, and fiber needs. Agricultural chemicals move into and through every component of the hydrologic system, including air, soil, soil water, streams, wetlands, and groundwater.

Attribution: Water Resources
Date published: March 2, 2019
Status: Active

Chloride, Salinity, and Dissolved Solids

All natural waters contain some dissolved solids (salinity) from contact with soils, rocks, and other natural materials. Too much, though, and dissolved solids can impair water use. Unpleasant taste, high water-treatment costs, mineral accumulation in plumbing, staining, corrosion, and restricted use for irrigation are among the problems associated with elevated concentrations of dissolved...

Contacts: Bruce Lindsey
Date published: March 2, 2019
Status: Active

Arsenic and Drinking Water

Arsenic is a naturally occurring element, but long-term exposure can cause cancer in people. There has been a substantial amount of research done to address arsenic in groundwater and drinking-water supplies around the country. The USGS studies local and national sources of arsenic to help health officials better manage our water resources.

Attribution: Water Resources
Date published: March 2, 2019
Status: Active

Large Oil Spills

Oil spills, such as the 2010 Deepwater Horizon Oil Spill, are impactful environmental disasters that have long lasting effects to the landscape, native species, and inhabitants who depend on the area. The USGS explores the adverse effect that large-scale oil spills have on the environment and helps responders prepare for environmental recovery and rehabilitation.

Attribution: Water Resources
Date published: March 1, 2019
Status: Active

Artificial Groundwater Recharge

Groundwater levels are declining across the country as our withdrawals exceed the rate of aquifers to naturally replenish themselves, called recharge. One method of controlling declining water levels is by using artificial groundwater recharge. The USGS monitors wells to evaluate the effect of groundwater depletion and recharge, and provides vital information to those who depend on groundwater...

Attribution: Water Resources
Date published: March 1, 2019
Status: Active

Public Supply Water Use

Public supply refers to water withdrawn by public and private water suppliers that provide water to at least 25 people or have a minimum of 15 connections. Public-supply water is delivered to users for domestic, commercial, and...