Images

A Hydrologic Imagery Visualization and Information System (HIVIS) camera in Eau Claire, Wisconsin, at Grand Avenue overlooking the Chippewa River.

James Romano holds a microplastic sampling net at Portage Lake, Minnesota before it is deployed into the lake to collect surface water microplastics.

Illustration (ink) depicting Delavan Lake and its dynamic water quality response to watershed changes, along with the associated monitoring efforts.

Streamgage 04043050 on the bank of the Trap Rock River near Lake Linden, Michigan in the Keweenaw Peninsula.

https://waterdata.usgs.gov/monitoring-location/04043050/

Equipment at streamgage 04043050 on the bank of the Trap Rock River near Lake Linden, Michigan in the Keweenaw Peninsula.

https://waterdata.usgs.gov/monitoring-location/04043050/

Streamgage 04043050 on the bank of the Trap Rock River near Lake Linden, Michigan in the Keweenaw Peninsula.

https://waterdata.usgs.gov/monitoring-location/04043050/

Streamgage 04043050 on the bank of the Trap Rock River near Lake Linden, Michigan in the Keweenaw Peninsula.

https://waterdata.usgs.gov/monitoring-location/04043050/

Angus Vaughan (USGS Upper Midwest Environmental Sciences Center, right) and Heidi Broerman (USGS Upper Midwest Water Science Center, left) pilot a research vessel down the Kalamazoo River, Michigan toward a reference reach where riverbed substrate will be characterized.

A piece of blue plastic fishing twine on Great Sand Bay beach on Lake Superior in the Keweenaw Peninsula, Michigan.

Stones on Lake Superior beach at Great Sand Bay in the Keweenaw Peninsula, Michigan

Amygdaloidal basalt rock on Great Sand Bay beach on Lake Superior in Keweenaw Peninsula, Michigan.

Streamgage 04060993 overlooks the Brule River at highway 2 near Florence, Wisconsin on an overcast day in June.

https://waterdata.usgs.gov/monitoring-location/04060993/

Streamgage 04060993 overlooks the Brule River at highway 2 near Florence, Wisconsin on an overcast day in June.

https://waterdata.usgs.gov/monitoring-location/04060993/

Constructed stormwater wetland upland native vegetation surrounding a USGS self-contained, solar-powered, monitoring station outfitted to collect samples, weather data, water quality data, and flow data at one of three inlets.

First year plantings of native wetland species surround main wetland pond. Elevated outlet and outlet monitoring station on right. The USGS self-contained, solar-powered, monitoring station is outfitted to collect samples, weather data, water quality data, and flow data at one of three inlets.

USGS scientist Tylor Rosera training a student from University of California-Davis on mercury sample processing, while on a field trip in Marquette, Michigan.

USGS scientist demonstrating how samples are prepared and identified in the USGS M3 Research Laboratory​.

Two sample bottles at the Mercury Research Laboratory. Prepped bottle (empty) on right and bottle filled with sample on left from Red Lake, Minnesota.

Mercury Research Laboratory team at the Forest Products Laboratory in Madison, Wisconsin

USGS Upper Midwest Water Science Center and USDA Forest Products Laboratory Northern Research Station sign. Offices are co-located in Madison, Wisconsin.

Five purge bubblers at the Mercury Research Laboratory. Preparing purge bubblers for sample analysis. Purging inorganic mercury on to a gold-coated bead trap. Chemically treat (reduce) the sample, purge it from the sample solution, capture onto gold coated bead trap, desorb the analyte on the instrument which has AFS detection.