Images

Longitudinal profiles of estuary depth (in meters) and water temperature in the Milwaukee River Estuary for the Milwaukee, Menomonee, and Kinnickinnic Rivers, as well as South Menomonee Canal (S. Canal) for August 30, 2019.

Row of lab bubblers sample purging prior to analysis at the Mercury Research Laboratory in Middleton, WI.

West-facing view of the Milwaukee, Wisconsin skyline from the Milwaukee Breakwater.

Methylmercury photodecomposition experiment on the roof of USGS building in Middleton, WI.

Erie pier pond in the Saint Louis River estuary in Duluth, MN.

View of the Milwaukee, Wisconsin skyline from Lake Michigan looking northwest on a late summer afternoon.

View of Lake Michigan from beach.

View of downtown Milwaukee with single crew row boat on river.

Custom-designed, automated, large-volume virus water sample filtration and collection system schematic.

USGS scientist extruding Lake Mendota, WI sediment while carefully removing sediment that was in contact with the polycarbonate tube to eliminate “edge effects” and smearing of upper sediment into lower portions of the core, UW-Madison Science Hall Lab.

Professional Headshot of Brent Heerspink taken at Michigan State University in the summer of 2019.

Collecting a sediment core with the freezing drive shoe technology on a hollow stem auger drill rig at Bemidji oil spill site.

Groundwater sampling along the north well transect at the Bemidji site.

Group photo of USGS Bemidi oil spill research team meeting in June of 2019 at Ruttgers Birchmont Lodge in Bemidji, MN.

South Flume (USGS Station ID: 413611087201301) surrounded by native plant species, including salt-tolerant blue iris, planted in the Gary City Hall rain garden, Indiana.

Scientist in field assessing soil sampling locations at the Badger Army Ammunition Plant site in Sauk County, WI.

WWG Reading on the Wild Rice River in Minnesota during record Midwest flooding in spring 2019.

USGS scientist Joel Stokdyk collects a homeowner water sample in April 2019.

A storm drain that periodically discharges urban runoff, potentially carrying sediment and pollutants, into Oak Creek at 15th Avenue near a USGS gage.

USGS hydrologist Erich Kessler prepares to measure the stream stage (the height of the water surface) of the Middle Fork Crow River near Spice, Minnestota.

Chippewa Dunes Multibeam Survey downstream of Durand bridge.