Images

New technology is helping the USGS monitor harmful algal blooms

Harmful algal blooms turn lake water emerald green

Harmful algal blooms turn water in Milford Lake emerald green

USGS scientists monitor the water quality off a bridge near Sedgwick, Kansas. A new USGS study shows that water quality on the Little Arkansas River and in the Equus Beds aquifer has not substantially changed since 2007 recharge activities began in the Equus Beds aquifer.

The City of Wichita's Equus Beds Aquifer Storage and Recovery Phase II river intake structure near Sedgwick, Kansas. A new USGS study shows that water quality on the Little Arkansas River and in the Equus Beds aquifer has not substantially changed since 2007 recharge activities began in the Equus Beds aquifer.

USGS employees take samples in Bronx River for a Northeast stream Quality Assessment 

Screen capture of ModelMuse with the caption "This video briefly describes the Riparian Evapotranspiration package (RIP) package and how ModelMuse supports it."

Harmful algal blooms turn water in Milford Lake emerald green

USGS hydrologists Irene Fisher and Michael Como sample water quality on Long Island.

The USGS monitors water quality at the Sleeping Bear Dunes National Lakeshore in Empire, Michigan. 

The USGS monitors water quality at the Sleeping Bear Dunes National Lakeshore in Empire, Michigan. 

Did you know that most streams in the United States have groundwater flowing into them at least part of the time? Contribution of groundwater to total streamflow varies widely among streams but can have a significant affect on water quality and (or) volume.

A corn farm in northeast Iowa. 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. 

Cows feed on a farm 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. 

A small stream flows through corn fields in northern Indiana. 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. 

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.

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.

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.