Chesapeake Bay Activities

Fish, Wildlife, and Habitat

Restoring and protecting populations of fish and wildlife provides important ecological and economic benefits for the Chesapeake, U.S. Department of Interior (DOI), and the Nation. The related USGS science topics include freshwater fish and streams, fish health and toxic ontaminants, and waterfowl and habitat. The findings are used to inform Chesapeake goals for fisheries, habitat, contaminants, and climate resiliency.


Filter Total Items: 34
Date published: October 15, 2020
Status: Completed

New Review of Sediment Science Informs Choices of Management Actions in the Chesapeake

Issue: The Chesapeake Bay Program (CBP) is pursuing restoration efforts to improve habitats and associated water quality for fisheries, both in the watershed and estuary. Excess sediment decreases light in tidal waters for submerged aquatic vegetation, harms oysters, carries contaminants, and impairs stream health throughout the watershed. The CBP is implementing management...

Contacts: Gregory Noe
Date published: October 15, 2020
Status: Completed

Effects of introduced species on native brook trout: a guide to the scientific literature

Issue: Native brook trout (Salvelinus fontinalis) are of great ecological, cultural, and economic importance in eastern North America, and their restoration is a focus of the Chesapeake Bay Program. Introduced, non-native species can jeopardize native brook trout, and more information on these effects are needed.

Date published: August 10, 2020
Status: Completed

Bioaccumulation of Mercury in Fish Varied by Species and Location in the Chesapeake Bay Watershed—Summary of Existing Data and a Roadmap for Integrated Monitoring

Fish mercury data from State monitoring programs and research studies within the Chesapeake Bay were compiled and summarized to provide a comprehensive overview of the variation in fish mercury concentrations among species and habitats within the watershed. These data are put into context with existing health benchmarks for humans, birds, and fish. Scientists also provide a roadmap for an...

Date published: April 28, 2020
Status: Completed

New Findings on Toxic Contaminants in the Chesapeake Watershed


The Chesapeake Bay Program has a goal to reduce the impacts of toxic contaminants on living resources in the Bay and its watershed. USGS leads the toxic contaminant outcome on research to increase our understanding of the impacts and mitigation options for toxic contaminants.

Date published: April 2, 2020
Status: Active

Changing Freshwater Flows Affect Fish Populations in the Potomac River

Issue: Millions of people rely on the Potomac River for drinking water and recreational opportunities. The Potomac is Maryland’s most popular freshwater fishing destination, and the second largest river that enters the Chesapeake Bay. Restoring fisheries is also an important goal for the Chesapeake Bay Partnership restoration efforts.

Contacts: Nathaniel (Than) Hitt, PhD, Josh Henesy, John Mullican
Date published: March 10, 2020
Status: Completed

USGS Chesapeake Bay Highlights for 2019


Date published: January 9, 2020
Status: Active

Type of Wetlands Affect How Much Nitrogen is Removed from the Bay’s Tidal Rivers

Issue: Wetlands are important for removing nitrogen from rivers entering the Chesapeake Bay. More information is needed on how much nitrogen wetlands can remove.

Contacts: Gregory Noe
Date published: November 20, 2019
Status: Completed

Refined Model Provides a Screening Tool to Understand Exposure to Contaminants from Incidental Wastewater Reuse

Refinement of the existing national-scale “de facto reuse incidence in our nation’s consumable supply” (DRINCS) model, complemented by field measurements, provides a screening tool to understand human and wildlife exposure to toxicants and pathogens associated with the incidental reuse of treated wastewater in the Shenandoah River watershed. The model results can be accessed in a companion...

Date published: September 17, 2019
Status: Active

Information to Help Design Better Fishways and Overcome Fish Migration Barriers

By Vivian Nolan

Date published: July 10, 2019
Status: Active

Intersex Fish