Images

View of the Upper Midwest Water Science Center St. Paul office, co-located with the U.S. Forest Service on the University of Minnesota - St. Paul Campus

Entrance to the USDA Forest Products Laboratory building in Madison, Wisconsin, home of the Upper Midwest Water Science Center Wisconsin office and the Mercury Research Laboratory.

A restored section of Underwood Creek at Wauwatosa, Wisconsin. https://waterdata.usgs.gov/monitoring-location/04087088/

USGS scientists electrofishing with a backpack shocker at Underwood Creek at Wauwatosa, Wisconsin. https://waterdata.usgs.gov/monitoring-location/04087088/.

USGS scientist holding a milting rainbow trout caught as part of an assessment of fish passage in Underwood Creek at Wauwatosa, Wisconsin, just downstream of I-41/US 45. https://waterdata.usgs.gov/monitoring-location/04087088/

Rainbow trout caught in net in Underwood Creek at Wauwatosa, Wisconsin. https://waterdata.usgs.gov/monitoring-location/04087088/

USGS scientist holding a white sucker fish caught in Underwood Creek at Wauwatosa, Wisconsin. https://waterdata.usgs.gov/monitoring-location/04087088/

Close up image of Seametrics T1 Thermister at Miners River near Munising, Michigan during April 2021 inspection.

Miners River NR Munising, MI - USGS Water Data for the Nation

USGS scientist holding a male central stoneroller caught in Underwood Creek at Wauwatosa, Wisconsin. https://waterdata.usgs.gov/monitoring-location/04087088/. This fish is native to Wisconsin; the tubercles (bumps) on its head indicate that it is spawning.

USGS scientist Sarah Janssen preparing the multicollector inductively coupled plasma mass spectrometer for mercury isotope measurements at the M3 Research Laboratory.

Sophie Lafond-Hudson stands on a frozen lake in northern Minnesota on the spring equinox.

USGS scientist Grace Armstrong sampling plankton on Lake Mendota in Madison, Wisconsin.

MC-ICP-MS used for mercury stable isotope analyses.

Nippon mercury analyzer for sediments and fish.

Streamgage 05300000 Lac Qui Parle River Near Lac Qui Parle, Minnesota.

https://waterdata.usgs.gov/monitoring-location/USGS-05300000/

Hydrologic technician Garret Welsh conducts an Ice Rod measurement through an augered hole in the frozen St. Croix river near streamgage 05341550 in Stillwater, Minnesota. An Ice Rod is a heavy-duty, 1-inch (2.5 centimeter) diameter, lightweight aluminum rod used for suspending ice meters in fast velocities.

Hydrologic technician Garret Welsh carries a large ice auger while walking across the frozen St. Croix river near streamgage 05341550 in Stillwater, Minnesota.

Graduate student, Grace Armstrong, performing mercury uptake studies in plankton at Mercury Research Laboratory, Middleton, Wisconsin.

Photo of helicopter with geophysical equipment loop deployed below it via slingload. Technician for scale. In January 2021 a helicopter carried an airborne electromagnetic induction sensor over parts of northeastern Wisconsin as part of a USGS study to map the aquifers in the region.

Photo of helicopter with geophysical equipment loop deployed below it via slingload. In January 2021 a helicopter carried an airborne electromagnetic induction sensor over parts of northeastern Wisconsin as part of a USGS study to map the aquifers in the region.

Geophysical equipment loop with sensor from SKYTEM. In January 2021 a helicopter carried an airborne electromagnetic induction sensor over parts of northeastern Wisconsin as part of a USGS study to map the aquifers in the region.