Maps

The map shows the average Index of Biological Integrity Score for phytoplankton by monitoring station for 2007.

The Phytoplankton (Index of Biological Integrity) (2007) map show the Percent of the goal achieved by CBP Monitoring Segment.

The 2007 Chlorophyll a Goal, Percent Achievement by Segment

This map shows the Percent of the Index of Biological Integrity Indicator Goal achieved by segment.

This map shows the 2007 Indicator Status of the Benthic Index of Biological Integrity by station.

This map shows the percent passing of the Water Clarity goals for each Chesapeake Bay Segment in 2007.

Each state in the watershed conducts benthic macroinvertebrate assessments as part of its biennial water quality assessment report mandated by the Clean Water Act. Where assessed benthic macroinvertebrate communities are deemed the most degraded, states must designate those stream segments as impaired and add them to the list of impaired waters in need of cleanup. The Bay Program state partners - Delaware, Maryland, New York, Pennsylvania, Virginia and West Virginia - used the data and results from their 2006 water quality assessments to prepare summaries of stream conditions in each state. The methodologies for benthic macroinvertebrate assessment vary by state, therefore a synthesis of results across the entire watershed was not attempted at this time The map presents a summary of each state's assessment results within the boundaries of the Chesapeake Bay watershed.

Tidal waters that are impaired for part or all of indicated Bay segment by toxic chemicals based on each state's implementation of the Clean Water Act.

Fish passage is a key component to the restoration of anadromous fish (shad and river herring) in the Chesapeake Bay watershed. These fish are blocked from much of their historic spawning areas, which included waters over 200 miles from the Bay. Maryland, Virginia, Pennsylvania and the District of Columbia have set goals to provide fish passage to make much of those historic spawning areas once again accessible to migratory fish. Other species that benefit from the unblocking of streams include eels, native species such as brook trout and other resident species.

This map shows the locations of riparian forest buffer restoration projects throughout the Chesapeake Bay Watershed. Project locations were provided by Forestry Workgroup representatives from the Maryland Department of Natural Resources, Virginia Department of Forestry, and Pennsylvania Department of Conservation and Natural Resources.