Images

An ichthyoplankton net sample within a collection bucket from the Sandusky River in May of 2022. Grass carp (Ctenopharyngodon idella) eggs are pictured in the foreground (semi-transparent spheres). Photo Credit: James Roberts, USGS

The Lake Erie Biological Station, a field station of the Great Lakes Science Center, moved from Sandusky Ohio to a new building in Huron Ohio in March 2022.

Sediments swirl in Lake Erie and Lake St. Clair in this Landsat 9 image of both Detroit, Michigan, and Windsor, Ontario, from Oct. 31, 2021. The Great Lakes serve as sources of freshwater, recreational activity, transport, and habitat for the upper-midwestern US, and water quality remains a high priority. 

A Phragmites australis stand at Crane Creek in the Ottawa National Wildlife Refuge, Ohio. P. australis is an invasive species in North America.

Phragmites invades coastal wetland in a changing climate. Ottawa National Wildlife Refuge, Oak Harbor, OH. Photo Credit: Kurt Kowalski, USGS-GLSC.

A USGS field team member retrieving the sample bottle from a time-based sampler onsite at a wastewater treatment facility.

Landscape view of two researchers walking through the emergent vegetation zone of a Great Lakes coastal wetland. Photo Credit: Alexandra (Sasha) Bozimowski, USGS.

Vessels like this use various sampling methods to collect fish at all life stages, adult, larvae, and eggs.

Nicole King (University of Toledo graduate student) holding a Grass Carp. The Ohio Department of Natural Resources and Michigan State University responded to a report from a commercial fisherman that grass carp were being captured in the Sandusky River. Researchers captured, tagged, and released grass carp to track their movements.

Vermillion River near Vermillion OH - frozen waterfall

Sheldon Marsh State Nature Preserve, near Sandusky Ohio taken on 30 July 2020 for the GLSC Photo Challenge

A curious young raccoon peers in on GLSC researchers as they walk through a wetland in Ohio on the way to a study site.

Map of the super gage site locations in Ohio, Kentucky, and Indiana

These images show grass carp larvae from the Maumee River. Characteristics of larval grass carp include overall length (left), skeletal muscle development (center) and presence of an eye spot that lacks pigmentation (right; pigment starting to develop on lower eye).

Cross section of a fish vertebra. Useful for determining the age of a fish.

A pectoral spine cross section from invasive grass carp captured in the Great Lakes. These cross sections are used to determine the age of the fish.

GSLC research fish biologist, Dr. Ed Roseman, delivers a plenary address at the Great Lakes Areas of Concern (AOC) conference on September 11-12, 2019.

USGS scientists never stop learning!

USGS scientists never stop learning! In this photo USGS Hydrologic Technician Charles Hart (USGS Ohio-Kentucky-Indiana Water Science Center) teaches USGS groundwater field personnel about measuring groundwater levels following USGS groundwater field procedures.

A U.S. Geological System van, outfitted on the inside with supplies for extensive water quality sampling, parked next to a groundwater well in Ohio. This sampling was conducted as part of a larger effort to assess the occurrence and distribution of per- and polyfluoroalkyl substances (PFAS) in the source waters of public water systems across West Virginia.

Ohio River at Ironton, OH - tower walkway