Maps

This map demonstrates the attainment status of those Chesapeake Bay Program monitoring segments that have dissolved oxygen standards for the Open Water, Deep Water, and Deep Channel designated use during the 2010-2012 assessment period.

This map demonstrates the attainment status of those Chesapeake Bay Program monitoring segments that have dissolved oxygen standards for the Migratory, Spawning and Nursery Habitat designated use during the 2010-2012 assessment period.

This map demonstrates the attainment status of those Chesapeake Bay Program monitoring segments that have dissolved oxygen standards for the Migratory, Spawning and Nursery Habitat designated use during the 2009-2011 assessment period.

This map demonstrates the attainment status of those Chesapeake Bay Program monitoring segments that have dissolved oxygen standards for the Open Water, Deep Water, and Deep Channel designated use during the 2009-2011 assessment period.

The 2012 Dissolved Oxygen Indicator showing Percent of Goal Achieved using the three year analysis method.

The 2011 Dissolved Oxygen Indicator showing Percent of Goal Achieved using the three year analysis method.

The 2010 Dissolved Oxygen Indicator showing Percent of Goal Achieved using the three year analysis method.

The 2009 Dissolved Oxygen Indicator showing Percent of Goal Achieved using the three year analysis method.

The 2008 Dissolved Oxygen Indicator showing Percent of Goal Achieved using the three year analysis method.

The 92-segment scheme for the Chesapeake Bay and its tidal tributaries used for dissolved oxygen and water clarity assessments in the most recent 303d/305b listing efforts of the four Bay tidal jurisdictions is documented here. The 92-segment scheme was derived from 1) the 2003 published 78-segment scheme with the addition of jurisdictional boundary lines imposed to create 89-segments, then 2) additionally includes only split segments agreed upon for the tidal James and Potomac rivers.