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scientist sampling habitat in a shallow river surrounded by greenery and wildflowers
Habitat sampling at Underwood Creek at Wauwatosa, Wisconsin
Habitat sampling at Underwood Creek at Wauwatosa, Wisconsin
Group of ten men standing and smiling in a garage with a sign in the background stating "safety is job #1"
USGS meeting with National Weather Service in Gladstone, Michigan
USGS meeting with National Weather Service in Gladstone, Michigan
USGS meeting with National Weather Service in Gladstone, Michigan

USGS meeting with National Weather Service at Gladstone, Michigan office garage, July 14, 2022. (From left to right: Matt Chilson, Doug Bonno, Dean Burdett, Evan Kutta, Jim Salzwedel, Jordan Wendt, Greg Sova, Chris Hoard, Matt Holmio, Ralph Haefner).

USGS meeting with National Weather Service at Gladstone, Michigan office garage, July 14, 2022. (From left to right: Matt Chilson, Doug Bonno, Dean Burdett, Evan Kutta, Jim Salzwedel, Jordan Wendt, Greg Sova, Chris Hoard, Matt Holmio, Ralph Haefner).

Two men load cargo into docked float plane
Dean Burdett prepares to board floatplane at Isle Royale National Park
Dean Burdett prepares to board floatplane at Isle Royale National Park
Dean Burdett prepares to board floatplane at Isle Royale National Park

Hydrologic Technician Dean Burdett prepares to board a floatplane with water samples taken from streamgage 04040000 Washington Creek near Windigo, MI, Isle Royale National Park, May 24, 2022. https://waterdata.usgs.gov/monitoring-location/04001000/

Hydrologic Technician Dean Burdett prepares to board a floatplane with water samples taken from streamgage 04040000 Washington Creek near Windigo, MI, Isle Royale National Park, May 24, 2022. https://waterdata.usgs.gov/monitoring-location/04001000/

Top view of water quality sonde showing individual sensors
water quality sonde.jpg
water quality sonde.jpg
water quality sonde.jpg

Water-quality sonde to be deployed from May through October in Grand Rapids, Michigan, to collect 15-minute measurements of dissolved oxygen, conductance, water temperature, turbidity, fluorescent dissolved organic matter (fDOM), and tryptophan-like fluorescence. This end-on view of the water-quality sonde shows each of the individual sensors.

Water-quality sonde to be deployed from May through October in Grand Rapids, Michigan, to collect 15-minute measurements of dissolved oxygen, conductance, water temperature, turbidity, fluorescent dissolved organic matter (fDOM), and tryptophan-like fluorescence. This end-on view of the water-quality sonde shows each of the individual sensors.

Scientist sampling water in stream in early spring.
Sampling for organic contaminants/Stream Health Synthesis in Root River near Franklin, Wisconsin
Sampling for organic contaminants/Stream Health Synthesis in Root River near Franklin, Wisconsin
Sampling for organic contaminants/Stream Health Synthesis in Root River near Franklin, Wisconsin

USGS scientist collecting a baseflow sample to test for organic contaminants (pharmaceuticals, pesticides, and organic waste compounds), with crest stage gage in the foreground at Root River near Franklin, Wisconsin. https://waterdata.usgs.gov/monitoring-location/04087220/

USGS scientist collecting a baseflow sample to test for organic contaminants (pharmaceuticals, pesticides, and organic waste compounds), with crest stage gage in the foreground at Root River near Franklin, Wisconsin. https://waterdata.usgs.gov/monitoring-location/04087220/

Close up view of a Turner C3 sensor fluorometer
Multi-parameter meter with FDOM, Tryptophan, Turbidity, and Temperature sensors and central wiper
Multi-parameter meter with FDOM, Tryptophan, Turbidity, and Temperature sensors and central wiper
Multi-parameter meter with FDOM, Tryptophan, Turbidity, and Temperature sensors and central wiper

Close up view of a Turner C3 submersible fluorometer sensors. Multi-parameter meter with FDOM, Tryptophan, Turbidity, and Temperature sensors and central wiper.

Close up view of a Turner C3 submersible fluorometer sensors. Multi-parameter meter with FDOM, Tryptophan, Turbidity, and Temperature sensors and central wiper.

Map showing locations of test and control watersheds for the determination of watershed response to green infrastructure
Map showing locations of test and control watersheds for the determination of watershed response to green infrastructure in Milwaukee, Wisconsin
Map showing locations of test and control watersheds for the determination of watershed response to green infrastructure in Milwaukee, Wisconsin
Map showing locations of test and control watersheds for the determination of watershed response to green infrastructure in Milwaukee, Wisconsin

Map showing locations of test and control watersheds for the determination of watershed response to green infrastructure in Milwaukee, Wisconsin.

Two people discussing design of bioswale at Green Tech Station on Milwaukee's North Side
Discussing the design of a bioswale at the Green Tech Station on the north side of Milwaukee, Wisconsin
Discussing the design of a bioswale at the Green Tech Station on the north side of Milwaukee, Wisconsin
Discussing the design of a bioswale at the Green Tech Station on the north side of Milwaukee, Wisconsin

Justin Hegarty (Reflo Sustainable Water Solutions) and Dr. Tony Parolari (Marquette University) discussing the design of a bioswale at the Green Tech Station on Milwaukee’s north side.

Justin Hegarty (Reflo Sustainable Water Solutions) and Dr. Tony Parolari (Marquette University) discussing the design of a bioswale at the Green Tech Station on Milwaukee’s north side.

Rat snake museum specimen
Rat snake museum specimen
Rat snake museum specimen
Rat snake museum specimen

This rat snake is a preserved museum specimen with snake fungal disease that was collected in Tennessee in 1973. The photo was taken at the USGS National Wildlife Health Center in 2017 as part of a study.

This rat snake is a preserved museum specimen with snake fungal disease that was collected in Tennessee in 1973. The photo was taken at the USGS National Wildlife Health Center in 2017 as part of a study.

Brick building with green accents near window and water tower with M in corner
St. Paul, Minnesota office
St. Paul, Minnesota office
St. Paul, Minnesota office

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

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 of USDA Forest Products Lab building in Madison, Wisconsin
Upper Midwest Water Science Center Forest Products Lab Wisconsin
Upper Midwest Water Science Center Forest Products Lab Wisconsin
Upper Midwest Water Science Center Forest Products Lab Wisconsin

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.

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.

Three scientists walking down a shallow river with backpack fish shocker to temporarily stun and sample fish
Fish shocking with backpack shocker at Underwood Creek at Wauwatosa, Wisconsin
Fish shocking with backpack shocker at Underwood Creek at Wauwatosa, Wisconsin
Close up view of a White Sucker fish being held in a person's left hand
Scientist holding a white sucker fish caught in Underwood Creek at Wauwatosa, Wisconsin
Scientist holding a white sucker fish caught in Underwood Creek at Wauwatosa, Wisconsin
A milting rainbow trout held up by scientist after being caught through electrofishing
A milting rainbow trout caught in Underwood Creek at Wauwatosa, Wisconsin
A milting rainbow trout caught in Underwood Creek at Wauwatosa, Wisconsin
A milting rainbow trout caught in Underwood Creek at Wauwatosa, Wisconsin

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/

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 in net
Rainbow trout in net
Rainbow trout in net
Breeding male central stoneroller fish with bumps on its head held in hands of scientist
Breeding male central stoneroller fish
Breeding male central stoneroller fish
Breeding male central stoneroller fish

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 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.

Hydrotech in orange snowsuit carrying large ice auger while walking across frozen river near bridge
Carrying an ice auger on the St. Croix River at Stillwater, Minnesota
Carrying an ice auger on the St. Croix River at Stillwater, Minnesota
Carrying an ice auger on the St. Croix River at Stillwater, Minnesota

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

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

Hydrotech holds rod with cylinder attached to end and lowers into hole drilled in ice-covered river with bridge in background
Measuring stream velocity through an augered hole in the frozen St. Croix River, Minnesota
Measuring stream velocity through an augered hole in the frozen St. Croix River, Minnesota
Measuring stream velocity through an augered hole in the frozen St. Croix River, Minnesota

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 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.

PEST++ data visualization
Visualization of an ensemble of solutions for PEST++
Visualization of an ensemble of solutions for PEST++
Visualization of an ensemble of solutions for PEST++

The left axis is a visualization of an ensemble of solutions (crosses and dashed lines) iteratively moving down gradient on an objective function surface (color flood) in 2-D parameters space, with the associated prior (gray) and posterior (blue) parameter marginal distributions shown on the two right stacked axes.

The left axis is a visualization of an ensemble of solutions (crosses and dashed lines) iteratively moving down gradient on an objective function surface (color flood) in 2-D parameters space, with the associated prior (gray) and posterior (blue) parameter marginal distributions shown on the two right stacked axes.

Arched bridge over lake channel in rural Wisconsin surrounded by green vegetation
Bridge over channel between Fence Lake and Big Crawling Stone Lake in Lac du Flambeau Chain of Lakes, Wisconsin
Bridge over channel between Fence Lake and Big Crawling Stone Lake in Lac du Flambeau Chain of Lakes, Wisconsin
Bridge over channel between Fence Lake and Big Crawling Stone Lake in Lac du Flambeau Chain of Lakes, Wisconsin

Bridge over channel between Fence Lake and Big Crawling Stone Lake in Lac du Flambeau Chain of Lakes, Wisconsin