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| Chesapeake Bay - Reporting Region Summary:
Scores & Conceptual Diagram
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| Index/Indicator | Score | Index/Indicator | Score | |||
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Chlorophyll a | 6% |
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Aquatic grasses | 24% |
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Dissolved oxygen | 77% |
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Benthic Index of Biotic Integrity | 44% |
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Water clarity | 1% |
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Phytoplankton Index of Biotic Integrity | 3% |
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Water Quality Index | 28% |
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Biotic Index | 24% |
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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: a) show and hide items by clicking them in the legend, b) select year range (click and drag), and c) 
export as an image.
Excel SpreadsheetRegion Info
The Choptank River watershed drains approximately 795 square miles. Counties included in the watershed include portions of Caroline, Dorchester, Queen Anne's, and Talbot. The Choptank River starts in Delaware and becomes tidal near Greensboro, Maryland. Some of the larger bodies of water include the Choptank, Little Choptank, and Tred Avon Rivers. Almost half of the land in the Choptank watershed is agricultural land, with a third being covered in forest. Cambridge is the largest city in the Choptank River watershed, with a population of 11,000. Other major cities and towns include Easton and Denton. The 2000 census population for the Maryland part of the watershed was 71,000. There are four major wastewater treatment plants in the watershed. Three of the four utilize Best Management Practices. (Based on MD DNR Tributary Strategy Report by Aadland et al., 2007 and updated 2000 land use classifications).
Editable Vector Version (SVG)