Images

Grass Carp Eggs being examined under a microscope to determine developmental stage.

A Grass Carp larva captured during a survey in the Maumee River, a Lake Erie tributary. Grass Carp are an invasive species that consume vegetation destroying habitat used by other species.

Front cover for the publication titled "Geochemistry and microbiology of groundwater and solids from extraction and monitoring wells and their relation to well efficiency at a Federally operated confined disposal facility, East Chicago, Indiana"

Dr. Patrick Kocovsky and Maddy Tomczak, University of Toledo student, look for Grass Carp lavae and eggs in the Sandusky River using a set of bongo nets, so named because they resemble bongo drums.  The nets are deployed one above the other so that one samples the surface water while the other samples deeper water.

Eagle Creek at Zionsville, IN - downstream of gage

Phragmites australis on the Shore of Lake St. Clair, 2015

This is a graphic from the USGS National Oil and Gas Assessment Explorer application, which allows user to drill into 70 oil and gas assessment provinces throughout the United States.

The USGS Ohio Water Science Center located in Colubumbus, Ohio. The OH WSC is part of the Ohio-Kentucky-Indiana WSC.

Grand River near Painesville, OH - construction at gage

Grand River near Painesville, OH - downstream

Grand River near Painesville, OH - construction

Grand River near Painesville, OH - railway bridge

Grand River near Painesville, OH - railway bridge at site

Grand River near Painesville, OH - railway bridge at site

Grand River near Painesville, OH - downstream view

Grand River near Painesville, OH - low flow

Grand River near Painesville, OH - view from bridge

Grand River near Painesville, OH - construction at site

The Maumee River Watershed with Areas of Concern

Field of Phragmites near Cedar Point, Ohio.

The untreated non-native Phragmites plant (left) appears healthy; the organically treated plants (right) appear dead.