What We Do Publications, Data & Maps Maps Science & Studies

Maps

Browse through maps depicting Bay health and restoration, including pollution trends, public access sites and more.

Category: Science & Studies

  • Date created: Jul 02, 2015

    Benthic Habitat (Index of Biological Integrity) (2014) Annual Average Score by Sampling Station

    This map shows the 2014 indicator status of the Benthic Index of Biological Integrity by station.

    Download

  • Date created: Jul 02, 2015

    Benthic Habitat (Index of Biological Integrity) (2013) Annual Average Score by Sampling Station

    This map shows the 2013 indicator status of the Benthic Index of Biological Integrity by station.

    Download

  • Date created: Jul 02, 2015

    Benthic Habitat (Index of Biological Integrity) (2014) Percent of Goal Achieved

    This map shows the percent of the Index of Biological Integrity indicator goal achieved by segment.

    Download

  • Date created: Jul 02, 2015

    Benthic Habitat (Index of Biological Integrity) (2013) Percent of Goal Achieved

    This map shows the percent of the Index of Biological Integrity indicator goal achieved by segment.

    Download

  • Date created: Jan 02, 2014

    Sediment Yields Measured in Watershed Streams and Rivers, Mean 2008-2012

    Watershed Yield: Sediment yields ranged from 9.3 to 648 tons per square mile. Each of the 17 sites in the high yield category carries more than 200 tons of sediment per square mile of watershed. High yielding sites are spatially dispersed across the Susquehanna, Potomac and Rappahannock watersheds. The lowest sediment yielding sits are located on the Eastern Shore and the York River Basin.

    Download

  • Date created: Jan 02, 2014

    Total Phosphorus Yields Measured in Watershed Streams and Rivers, Mean 2008-2012

    Watershed Yield: Total Phosphorus yields ranged from 0.036 to 0.57 tons per square mile. Each of the 17 sites in the high yield category carries more than 0.19 tons of phosphorus per square mile of watershed. High yielding sites were found in the Eastern Shore, Susquehanna, Potomac, and Rappahannock Watersheds. The lowest yields are generally in the western areas of the Bay watershed and the York River Basin.

    Download

  • Date created: Jan 02, 2014

    Total Nitrogen Yields Measured in Watershed Streams and Rivers, Mean 2008-2012

    Watershed Yield: Total Nitrogen yields ranged from 0.33 to 9.87 tons per square mile. Each of the 17 sites in the high yield category carries more than 3.4 tons of nitrogen per square mile of watershed. These sites are generally located on the Eastern Shore, Lower Susquehanna and Northern Potomac Watersheds. The lowest yields, which are less than 1.2 tons per square mile, are generally in the Upper Potomac and Southern Virginia Rivers.

    Download

  • Date created: Jan 02, 2014

    Short Term Flow-Adjusted Trends in Sediment, 2003-2012

    Short Term Trend: Over the past 10 years, 49 percent of sites show little change while 41 percent show degrading flow-adjusted sediment concentrations. Between 2003 and 2012: - 4 out of 39 sites show improving flow-adjusted trends for sediment concentrations, - 16 site shows degrading trends, and - 19 sites show small changes that are not statistically significant.

    Download

  • Date created: Jan 02, 2014

    Short-Term Trend in Flow-Adjusted Total Phosphorus Concentration, 2003-2012

    Short Term Trend: Over the past 10 years, 63 percent of the monitoring stations show little or no change in flow-adjusted phosphorus concentrations. Between 2003 and 2012: - 9 out of 43 sites show improving flow-adjusted trends for phosphorus concentrations, - 7 site shows degrading trends, and - 27 sites show small changes that are not statistically significant.

    Download

  • Date created: Jan 02, 2014

    Short-Term Trend in Flow-Adjusted Total Nitrogen Concentration, 2003-2012

    Short Term Trend: Over the past 10 years, 54 percent of the monitoring stations show improving flow-adjusted nitrogen concentrations. Only one site showed degrading nitrogen conditions. Between 2003 and 2012: - 25 out of 46 sites show improving flow-adjusted trends for nitrogen concentrations, - 1 site shows degrading trends, and - 20 sites show small changes that are not statistically significant.

    Download

    • 1
    • 2
    • 3
    • Next Page >>
    • Last Page >|

Search

Find a map using the form below.

Categories

  • All Maps
  • Pressures
  • Restoration & Protection
  • Health
  • Science & Studies
  • Reference
  • Places & People

Stay informed on our work.
Connect with us.

Follow us on these social networks

Sign up for one of our daily, weekly or monthly newsletters

Subscribe
Chesapeake Bay Program logo

The Chesapeake Bay Program is a unique regional partnership that has led and directed the restoration of the Chesapeake Bay since 1983.

1750 Forest Drive Suite 130
Annapolis, MD 21401

Tel: (800) YOUR-BAY (968-7229)
Fax: (410) 267-5777

© 2022 Chesapeake Bay Program All Rights Reserved

  • Job Openings
  • |
  • Contact Us
  • |
  • Terms of Use
  • |
  • Privacy Policy
  • Job Openings
  • Contact Us
  • Terms of Use
  • Privacy Policy