Images

Installing a rebar stake into river bottom by pounding in from above to be used as an anchor for the passive samplers at Menomonee River at Menomonee Falls, Wisconsin. https://waterdata.usgs.gov/monitoring-location/04087030/

Measuring the stream velocity at the location of passive sampler deployment at Cedar Creek near Cedarburg, Wisconsin. https://waterdata.usgs.gov/monitoring-location/04086500/

View of submerged passive sampler from above water deployed at Lincoln Creek at 47th Street at Milwaukee, Wisconsin. https://waterdata.usgs.gov/monitoring-location/040869415/

Scientist attaching underwater passive sampler to a rebar stake using zip ties at Jewel Creek at Muskego, Wisconsin. https://waterdata.usgs.gov/monitoring-location/05544371/

Measuring the infiltration rate of a biofilter using a double-ring infiltrometer. This was one of many quantitative and qualitative values assigned to each green infrastructure practice. The monitoring equipment are shown next to greenery planted in a sidewalk in an urban environment in Oakland County, Michigan.

Field assistant Kathryn Johncock wades in a wetland while filtering for infectious avian influenza virus at the Roseau River Wildlife Management Area, Roseau, Minnesota.

Benthic algae growing at Oak Creek at East Drexel Avenue in Oak Creek, Wisconsin. https://waterdata.usgs.gov/monitoring-location/04087202/

Biologist Pat Perner (USGS Upper Midwest Environmental Science Center, left) and Physical Scientist James Romano (UMid WSC, right) collect a sediment core from the Mukwonago River at Mukwonago, Wisconsin. https://waterdata.usgs.gov/monitoring-location/05544200/

Collection of aquatic invertebrates in the field. Photo taken by Laura Hubbard, USGS.

Nighttime collection of adult aquatic insects using a vacuum aspirator on a white sheet illuminated by blacklight. Photo Taken by Laura Hubbard, USGS

Physical Scientist James Romano (UMid WSC, left) and Field Assistant Justin Peschman (UMid WSC, right) collect a sediment core from the Scuppernong River near Palmyra, Wisconsin. https://waterdata.usgs.gov/monitoring-location/05426400

Biologist Pat Perner (USGS Upper Midwest Environmental Science Center, left) and Field Assistant Justin Peschman (UMid WSC, right) collect a sediment core from the Root River at Grange Avenue in Greenfield, Wisconsin. https://waterdata.usgs.gov/monitoring-location/04087214/

Field Assistant Justin Peschman (UMid WSC) filters a water sample for nutrient analysis at Mukwonago River at Mukwonago, Wisconsin. https://waterdata.usgs.gov/monitoring-location/05544200/

Collecting fish using a seine at Lincoln Creek near 47th Street in Milwaukee, Wisconsin in summer. LINCOLN CREEK AT 47TH STREET AT MILWAUKEE, WI - USGS Water Data for the Nation

Fish sampling using a seine. USGS scientists use a seine to sample fish communities in the Little Menomonee River at Milwaukee, Wisconsin. LITTLE MENOMONEE RIVER AT MILWAUKEE, WI - USGS Water Data for the Nation.

Fish sampling using a backpack shocker. USGS scientists use a backpack-mounted electrofishing device to sample fish communities in the Menomonee River at Wauwatosa, WI (MENOMONEE RIVER AT WAUWATOSA, WI - USGS Water Data for the Nation), near 70th Street.

North Branch Oak Creek at South Wildwood Drive at Oak Creek, Wisconsin looking upstream during summer.

Looking upstream Oak Creek at South 31st Street in Franklin, Wisconsin, in summer. https://waterdata.usgs.gov/monitoring-location/04087188

Looking upstream Underwood Creek Tributary near Oak Leaf Trail at West Allis, Wisconsin, during summer. https://waterdata.usgs.gov/monitoring-location/0408708573/

Fish are weighed and measured for length.

Stream gage at Little Menomonee River, upstream of the confluence with the Menomonee River, Wisconsin. https://waterdata.usgs.gov/monitoring-location/04087070/