Images

Physical Scientist Owen Stefaniak collects a surface water grab sample for chloride analysis while a multiparameter sonde takes a water quality measurement near the upstream Infall site near the Air Guard 128^th Air Refueling Wing base in Milwaukee, Wisconsin.

One of four streamgaging stations with autosamplers used in study to detect phosphorus in receiving waters from airport deicer runuff.

Owen Stefaniak collects a water sample of a tributary of Oak Creek, in Milwaukee, Wisconsin. The tributary is locoated at the southeast corner of General Mitchell International Airport property, just outside the perimeter fence. The airport runway is visible beyond the fence.

Owen Stefaniak and Kathryn Johncock collect water samples of a tributary of Oak Creek, in Milwaukee, Wisconsin. The tributary is locoated at the southeast corner of General Mitchell International Airport property, just outside the perimeter fence.

Two technicians deicing a plane at Milwaukee General Mitchell International Airport in winter. They are applying Type I aircraft deicer (which is orange) to the plane. Type I deicer is typically applied hot (hence the steam) and it is used to remove existing ice and snow. This will then usually be followed with Type IV (which is green) to prevent new ice.

Owen Stefaniak inspects equipment at streamgage 040871473, Wilson Park Creek @ GMIA Infall at Milwaukee, Wisconsin. Wilson Park Creek at Gmia Infall at Milwaukee, WI - USGS Water Data for the Nation.

Hydrologic Technician Jarvis Kaderlik makes a stream discharge measurement using a remote-controlled M9 ADCP (acoustic Doppler current profiler) on the Wisconsin River, near streamgage 05391000 Rainbow Lake near Lake Tomahawk, Wisconsin.

View of downtown Milwaukee, Wisconsin from Pier Wisconsin Cruise dock in winter.

View of downtown Milwaukee, Wisconsin from Pier Wisconsin Cruise Dock in winter.

Bojan performing an electrical resistivity tomography survey for his MS thesis. 

National Park Service Biological Technician Eileen Kramer harvests her first white-tailed deer in New York.

A snow-covered Streamgage 04085074 with a green USGS sign in front of a red barn on an overcast snowy day at Dutchman Creek at Cyrus Street near Ashwaubenon, Wisconsin.

Hydrologic Technician Scott Adolphson takes a discharge measurement of the ice-covered Chippewa River at streamgage 05305000 near Watson, Minnesota surrounded by snow-covered trees.

USGS streamgage 04072150 at Duck Creek near Howard, Wisconsin covered in layer of snow overcast December day.

A snowy entrance to the USGS Mounds View (Twin Cities), Minnesota office in December.

A technician has just finished applying Type IV aircraft anti-icing fluid (which is green) to an airplane parked at a hangar. Anti-icing fluid is applied after the plane has already been deiced and it is used to prevent new ice from forming. Type IV fluid typically shears off the fuselage during takeoff and can be deposited along runways.

Upstream Infall gaging station near the Air Guard 128th Air Refueling Wing base in Milwaukee, Wisconsin.

Streamgage 05291000, Whetstone River near Big Stone City, South Dakota. A green gage house on an elevated platform with a walkway over a shallow bank surrounded by snow-covered foliage during early morning in December.

Streamgage 05049700 Lake Traverse at Reservation Dam near Wheaton, Minnesota in winter, surrounded by windswept snow, with a pink-hued snow-covered lake and open water in the background.

An orange acoustic Doppler current profiler (ADCP) floats in the middle of the Flambeau River near Bruce, Wisconsin near USGS streamgage 05360500 on an overcast winter day. 

A wintery landscape of snow-covered grass and trees on a late morning in November in Kewaunee County in northeast Wisconsin.