• Home
  • Discover the Chesapeake
Text Size: A  A  A

Discover the Chesapeake

The Chesapeake Bay - the largest estuary in the United States - is an incredibly complex ecosystem that includes important habitats and food webs. The Bay and its rivers, wetlands and forests provide homes, food and protection for diverse groups of animals and plants. Fish of all types and sizes either live in the Bay and its tributaries year-round or visit its waters as they migrate along the East Coast.

Bay 101

Select a category below to view videos from our Bay Program video library. Prior to using any of these videos, please view our terms of use to learn about usage rights.


Bay 101: Fish Food

Find out what larger fish like striped bass and bluefish eat to survive in the Chesapeake Bay

The Chesapeake Bay Watershed

A watershed is an area of land that drains to a particular river, lake, bay or other body of water. Watersheds are sometimes called “basins” or "drainage basins."

We all live in a watershed. Some watersheds, like that of your local stream or creek, are small. Others, like the Chesapeake Bay watershed, are very large. Learn more about the Chesapeake Bay watershed.

The Bay Ecosystem

An ecosystem is a complex set of relationships among living and non-living things. Air, water, soil, sunlight, plants and animals – including humans – make up an ecosystem. Ecosystems can be as tiny as a patch of dirt in your backyard, or as large as the entire Chesapeake Bay watershed.

The Bay Ecosystem

The Chesapeake Bay, the largest estuary in the United States, is an extremely productive and complex ecosystem. The Bay ecosystem consists of the Bay itself, its local rivers and streams, and all the plants and animals it supports. Learn more about the Chesapeake Bay ecosystem.

Critter Of The Month

Rusty Crayfish
Orconectes rusticus

The rusty crayfish is an invasive species that can be found in some rivers and streams throughout the Chesapeake Bay region. It has a spot on either side of its back that is rusty in color.

Chesapeake History

2014

2014
  • The Chesapeake Executive Council signs the Chesapeake Bay Watershed Agreement, which contains goals and outcomes that will guide conservation and restoration across the watershed. For the first time, the Bay’s headwater states commit to those goals that reach beyond water quality.

2013

2013
  • A federal judge rules that the U.S. Environmental Protection Agency can set pollution limits for the Chesapeake Bay, thus upholding the Total Maximum Daily Load (TMDL) that was challenged in court in 2011.

2012

2012
  • Harris Creek becomes the first target of the oyster restoration goals set forth in the Chesapeake Bay Executive Order: to restore oyster populations in 20 Bay tributaries by 2025. In this Choptank River tributary, existing reefs will be studied, new bars will be built and spat-on-shell will be planted.

2011

2011
  • The U.S. Environmental Protection Agency issues a new Municipal Separate Storm Sewer Permit to the District of Columbia. It is the first of its kind to incorporate green infrastructure into its requirements, setting a national model for stormwater management.

2010

2010
  • Maryland, Virginia and New York ban phosphates in dishwasher detergent to lower phosphorous pollution in local waterways.
  • The U.S. Environmental Protection Agency establishes the Total Maximum Daily Load to limit the amount of pollutants that can enter the Chesapeake Bay.
  • The Bay Program launches ChesapeakeStat to improve communication about restoration goals, progress and funding.

Bay FAQ


What is groundwater?


How do fish passageways work?


Do blue crabs put on weight before winter hibernation?


How does groundwater become polluted?


What causes poor water clarity?


How does chicken waste affect the Chesapeake Bay?


How big is the Chesapeake Bay watershed?


What makes an area a wetland?


What is the Chesapeake Bay's salinity range?


What is a tributary?

See more FAQs.

Bay Glossary

Biological diversity

The variety of life in all forms, levels and combinations, including ecosystem diversity, species diversity and genetic diversity.

Estuary

A partially enclosed body of water where fresh water from rivers and streams mixes with salt water from the ocean. It is an area of transition from land to sea.

Algae

Tiny, single-celled planktonic plants. Algae, or phytoplankton, are the primary producers of food and oxygen in the Bay food web.

Radial

Body parts on an invertebrate that are arranged in a circle around a single center.

Clean Water Act

Common name for the Federal Water Pollution Control Act. Its purpose is to “restore and maintain the chemical, physical and biological integrity of the nation’s waters,” whether on public or private land. It authorizes the U.S. Environmental Protection Agency (EPA) to set water quality criteria for states to use to establish water quality standards.

Mollusk

A phylum of invertebrates that includes bivalves (clams, oysters and mussels), gastropods (snails) and cephalopods (squids).

Hydric soil

Soil that is saturated or flooded with water for long enough during the growing season that its upper portion develops anaerobic or low-oxygen conditions.

Pollution

The introduction of harmful substances or products into the environment.

See more bay terms.

410 Severn Avenue / Suite 112
Annapolis, Maryland 21403
Tel: (800) YOUR-BAY / Fax: (410) 267-5777
Directions to the Bay Program Office
Terms of Use | Privacy Policy
©2012 Chesapeake Bay Program | All Rights Reserved