EcoCheck banner


Browse History: Patuxent River (2007)





Chesapeake Bay - Reporting Region Summary:



  Estuary Selection Map

Scores & Conceptual Diagram


Bay Health Index
Benthic Index of Biotic Integrity Icon
20%
D-
Patuxent River: 2007

Bottom-ranked grade: D-
  • Slight decrease compared to 2006 score (23); health remained in poor condition.
  • Worst chlorophyll a score recorded and aquatic grasses have declined in recent years.

Score Legend
Locator Map
  Index/Indicator Score     Index/Indicator Score
Benthic Index of Biotic Integrity Icon Chlorophyll a
9%
  Benthic Index of Biotic Integrity Icon Aquatic grasses
9%
Benthic Index of Biotic Integrity Icon Dissolved oxygen
66%
  Benthic Index of Biotic Integrity Icon Benthic Index of Biotic Integrity
28%
Benthic Index of Biotic Integrity Icon Water clarity
5%
  Benthic Index of Biotic Integrity Icon Phytoplankton Index of Biotic Integrity
3%
 
Benthic Index of Biotic Integrity Icon Water Quality Index
27%
  Biotic Index Icon Biotic Index
13%
 

Excel Spreadsheet

Dynamic Conceptual Diagram

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.


Region Info

The Patuxent River watershed drains approximately 900 square miles of land. This area includes portions of St. Mary's, Calvert, Charles, Anne Arundel, Prince George's, Howard, and Montgomery Counties. Three main streams drain into the upper Patuxent River: the Little Patuxent, which drains much of the newly urbanized area of Columbia; the Middle Patuxent, which drains agricultural lands in the northern part of its drainage and the outer suburban areas of Columbia in the southern part of its watershed; and the (upper) Patuxent River, which has remained primarily agricultural. Land use in the watershed is mainly forest, with significant urban and agriculture development. Two large metropolitan areas, Baltimore and Washington, D.C., border the Patuxent River, and the watershed has gone through significant suburban development in the past few decades. Columbia and Laurel have developed along the Interstate 95 corridor, which bisects the upper half of the watershed. The 2000 census population for the watershed was 18,000 people. (Based on MD DNR Tributary Strategy Report by Karrh et al., 2007 and updated 2000 land use classifications).

patuxent_riverconceptual diagram.png

Editable Vector Version (SVG)