University of Maryland Extension

BayWise Landscape Management

University of Maryland Extension Master Gardeners are available to certify your yard, or garden as BayWise friendly.


  • LENGTH: 200 miles.
  •  WIDTH: varies: 4 miles at the Bay Bridge to 30 miles at the mouth of the Potomac River.
  •  DEPTH: average depth is 21 feet, maximum depth is 175 feet near Bloody Point, Md.
  •  MILES OF SHORELINE: 11,000 miles. (The distance from New York to Los Angeles and back to New York.)  
  •  SURFACE AREA OF SHORELINE: 4,400 square miles.
  •  WATERSHED: 64,000 square miles in 6 states and Washington, D.C.
  •  Chesapeake is a Native American word meaning "Great Shellfish Bay". 
  •  The Chesapeake Bay is the largest estuary in the United States and the third largest in the world.
  •  The entire Bay watershed includes over 110,000 miles of streams – 2/3 of Virginia, 1/2 of Pennsylvania, 1/3 of Delaware, 1/5 of West Virginia, 1/6 of New York, and, of course, all of DC.


To have your yard BayWise Certified

Contact:  Franchella Kendall at   or   

Esther Mitchell at



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