An irrigation system waters crops in southern Wisconsin. A new USGS report shows that drought periods followed by rainfall caused nitrate levels to increase to the highest ever measured in some Midwest streams during a 2013 study.
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An irrigation system waters crops in southern Wisconsin. A new USGS report shows that drought periods followed by rainfall caused nitrate levels to increase to the highest ever measured in some Midwest streams during a 2013 study.
In this photo, a USGS intern is deploying fiber-optic cable along the bed of a trout stream to measure temperature in June 2016. This fiber-optic distributed temperature sensing system is used by USGS scientists to identify areas where groundwater is discharging into the stream.
In this photo, a USGS intern is deploying fiber-optic cable along the bed of a trout stream to measure temperature in June 2016. This fiber-optic distributed temperature sensing system is used by USGS scientists to identify areas where groundwater is discharging into the stream.
USGS scientist Jody Avant installs a temporary streamgage on the Brazos River near West Columbia, Texas. Rapidly deployable streamgages can be installed temporarily to provide emergency managers with additional information needed to help protect public safety.
USGS scientist Jody Avant installs a temporary streamgage on the Brazos River near West Columbia, Texas. Rapidly deployable streamgages can be installed temporarily to provide emergency managers with additional information needed to help protect public safety.
Temporary streamgage installed by the USGS on the Brazos River near Brazoria, Texas. Rapidly deployable streamgages can be installed temporarily to provide emergency managers with additional information needed to help protect public safety.
Temporary streamgage installed by the USGS on the Brazos River near Brazoria, Texas. Rapidly deployable streamgages can be installed temporarily to provide emergency managers with additional information needed to help protect public safety.
The Great Basin area in the northern Snake Range near the Utah/Nevada boarder.
The Great Basin area in the northern Snake Range near the Utah/Nevada boarder.
The Great Basin area in the northern Snake Range near the Utah/Nevada boarder.
The Great Basin area in the northern Snake Range near the Utah/Nevada boarder.
The Great Basin area in the northern Snake Range near the Utah/Nevada boarder.
The Great Basin area in the northern Snake Range near the Utah/Nevada boarder.
The Great Basin area in the northern Snake Range near the Utah/Nevada boarder.
The Great Basin area in the northern Snake Range near the Utah/Nevada boarder.
The Great Basin area in the northern Snake Range near the Utah/Nevada boarder.
The Great Basin area in the northern Snake Range near the Utah/Nevada boarder.
This public-supply well taps groundwater in the High Plains aquifer in Texas. The strontium concentration in the sample from this well was 4,630 micrograms per liter, exceeding the health-based screening level of 4,000 micrograms per liter.
This public-supply well taps groundwater in the High Plains aquifer in Texas. The strontium concentration in the sample from this well was 4,630 micrograms per liter, exceeding the health-based screening level of 4,000 micrograms per liter.
USGS ecologist Jaimie Gillespie measuring a Sediment Elevation Table (SET) on the Pamunkey River, VA. This SET is part of a larger project which consists of two SETs at each of five research sites, on both the Mattaponi and Pamunkey Rivers spanning Oligahaline to non-tidal conditions.
USGS ecologist Jaimie Gillespie measuring a Sediment Elevation Table (SET) on the Pamunkey River, VA. This SET is part of a larger project which consists of two SETs at each of five research sites, on both the Mattaponi and Pamunkey Rivers spanning Oligahaline to non-tidal conditions.
Sampling for Impacts of UOG Wastes
USGS scientist collecting water-quality samples on a wastewater disposal facility in West Virginia to assess potential environmental impacts due to activities at the site.
Sampling for Impacts of UOG Wastes
USGS scientist collecting water-quality samples on a wastewater disposal facility in West Virginia to assess potential environmental impacts due to activities at the site.
Water flowing on the Colorado River near Moab, Utah.
The entire Colorado River Basin currently supports 50 million people, and that amount is expected to increase by 23 million between 2000 and 2030. A new USGS study shows more than half of the streamflow in the Upper Colorado River Basin originates as groundwater.
Water flowing on the Colorado River near Moab, Utah.
The entire Colorado River Basin currently supports 50 million people, and that amount is expected to increase by 23 million between 2000 and 2030. A new USGS study shows more than half of the streamflow in the Upper Colorado River Basin originates as groundwater.
Sim Rivera demonstrating a groundwater model to children at the Shinnecock Nation Earth Day outreach event.
Sim Rivera demonstrating a groundwater model to children at the Shinnecock Nation Earth Day outreach event.
USGS responsds to recent flooding near Houston, Texas on April 20, 2016.
USGS responsds to recent flooding near Houston, Texas on April 20, 2016.
![Instrumentation at a groundwater well](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/20150922_133340_0.jpg?itok=h-plnvn1)
Instrumentation for measuring real-time groundwater properties at the SGW-93 bedrock-aquifer public-supply well pump house in Seabrook, NH. Read the journal article.
Instrumentation for measuring real-time groundwater properties at the SGW-93 bedrock-aquifer public-supply well pump house in Seabrook, NH. Read the journal article.
Modern-day USGS streamgage at Elm Fork Trinity River near Carrollton, Texas.
Modern-day USGS streamgage at Elm Fork Trinity River near Carrollton, Texas.
Currently, most of the streamflow equipment is located on a streambank or bridge. Large structures are no longer needed at most streamgage locations. Today, streamgage equipment can be contained in small metal shelters that are located on streambanks or bridges.
Currently, most of the streamflow equipment is located on a streambank or bridge. Large structures are no longer needed at most streamgage locations. Today, streamgage equipment can be contained in small metal shelters that are located on streambanks or bridges.
A modern 21st century version of a streamgage structure.
A modern 21st century version of a streamgage structure.