Chesapeake Bay

The Chesapeake Bay is the largest estuary* in the United States. Its watershed** stretches across more than 64,000 square miles, encompassing parts of six states – Delaware, Maryland, New York, Pennsylvania, Virginia and West Virginia – and the District of Columbia. Its waters provide homes, food, and protection for 2,700 species of animals and plants. It also serves as a highway for commerce, a playground, a storehouse of food, and a home for the 13 million people who live in its vast watershed. It is the source of a fish and shellfish industry worth more than $850 million per year.

But in recent years, the Chesapeake has become less able to support the fish and wildlife it once did. Increasing amounts of excess nutrients, sediment, and toxic substances are causing serious problems in the Bay. Studies show alarming declines in fish and wildlife and in the habitat available to them. In spite of cleanup efforts, the health of the Chesapeake Bay remains very poor.

What You Can Do

  • Wade in: We'll show you how to test the water in your neighborhood streams – they all flow into the Bay! All you need is a net, some boots, and a sharp eye for small bugs. 
  • Join the Clean Water Challenge: Healthy streams are vital to healthy communities. It's where our kids play and dogs splash. And some of these streams provide the water we drink. But is the water in these streams clean and safe? The truth is, for most local streams, no one knows.That’s a problem – one the Izaak Walton League can help you solve with the Clean Water Challenge.
  • Lighten the load: You can take steps at home and around the block to lighten the load of pollution that runs into the Chesapeake Bay.
  • Speak out: Sign up for League Action Alerts to speak up for the health of the Bay. 

* An estuary is a body of water formed where freshwater from rivers and streams flows into the ocean, mixing with the seawater.
** A watershed is an area of land that drains water, sediment, and dissolved materials to a common outlet.

Watershed Priority Areas_CMC Report_300x300

Prioritization Report

A new report about how volunteer monitoring can help fill data gaps in the Chesapeake Bay Watershed was released in April 2017. The League is working to apply the report findings and take action by engaging new partners and training volunteers.
Read the full report >>