Reporting Region Summary:

Scores & Conceptual Diagram

	Bay Health Index	26% D
Bottom-ranked grade: D Slight improvement compared to 2006 score (13), mostly due to a better benthic community score. Water quality in this region has been consistently poor over the past two decades of monitoring.

	Index/Indicator	Score			Index/Indicator	Score
	Chlorophyll a	0%			Aquatic grasses	2%
	Dissolved oxygen	57%			Benthic Index of Biotic Integrity	83%
	Water clarity	0%			Phytoplankton Index of Biotic Integrity	10%
	Water Quality Index	19%			Biotic Index	32%

Excel Spreadsheet

Editable Vector Diagram (SVG)

Maps

This indicator map is already zoomed to the area of this region. You can pan and zoom and also change to another indicator map.

Trends Graph

This graph is dynamic, you can check and uncheck indicators ( checkboxes in legend), select year range ( click and drag), and export as an image (right click).

Editable Vector Version (SVG)

Excel Spreadsheet

Region Info

The Patapsco and Back Rivers watershed drains 630 square miles. This area includes Baltimore, and portions of Anne Arundel, Baltimore, Carroll, and Howard Counties. The area is very populated and urbanized. The census population in 2000 for the watershed was 1,480,000. Baltimore is the largest city in the watershed, with suburbs of the city extending out from it in every direction. Other large cities include Westminster, Ellicott City, Towson, and Glen Burnie. There are seven major wastewater treatment plants in the watershed. (Based on MD DNR Tributary Strategy Report by Aadland et al., 2007 and updated 2000 land use classifications).

Editable Vector Version (SVG)

Additional Info

Relevant Websites

Parks and People Foundation
Maryland DNR - Tributary Strategies
Chesapeake Bay Program - Tributary Strategies