Maps
Browse through maps depicting Bay health and restoration, including pollution trends, public access sites and more.
Dissolved Oxygen, Percent Goal Achieved for 2007, 3 YR Analysis
Date created: May 27, 2008The 2007 Dissolved Oxygen Indicator showing Percent of Goal Achieved by the three year analysis method.
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Dissolved Oxygen Designated Uses of the Chesapeake Bay and its Tidal Tributaries
Date created: April 18, 2008Sufficient dissolved oxygen (DO) is crucial for the fauna of the Chesapeake Bay to exist. Different aquatic organisms have different DO requirements. Many finfish need at least 5 mg/l while some bottom dwelling worms and clams need as little as 1 or 2 mg/l to survive. The different designated use zones (Open Water, Deep Water and Deep Channel) reflect the different needs of the species that inhabit different parts of the water column. Note: Some areas of the DO Designated Use were changed in 2007 from the original published map of 2003.
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