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Bay Resource Library

The Chesapeake Bay Program collects and provides many resources for public use, including photos, maps, data sets, publications and more. Whether you're looking for the definition of a technical term, a map of underwater bay grass distribution or the perfect photo of a blue crab, you can find it here in the Bay Program's resource library.


Select a category below to view videos from our Bay Program video library. Prior to using any of these videos, please view our terms of use to learn about usage rights.

Bay 101: Wetlands

Wetlands are important wildlife habitat that also help improve water quality downstream


Search or browse the Bay Program photo collection for photos of wildlife, habitats, pollution, recreation and more. We provide low and high-resolution downloads. Prior to using any of these images, please view our terms of use to learn about usage rights.


Visit the Chesapeake Bay Program's map gallery for a maps on a wide range of topics. Prior to using any of these maps, please view our terms of use to learn about usage rights.

<strong>Chesapeake Bay Watershed Model: Phase 5 Modeling Segments</strong> (<a href='http://www.chesapeakebay.net/maps/map/chesapeake_bay_watershed_model_phase_5_modeling_segments'>view map</a>) <strong>Chesapeake Bay Counties</strong> (<a href='http://www.chesapeakebay.net/maps/map/chesapeake_bay_counties1'>view map</a>) <strong>Priority Living Resource Areas</strong> (<a href='http://www.chesapeakebay.net/maps/map/priority_living_resource_areas'>view map</a>) <strong>Land Cover: Chesapeake Bay Watershed</strong> (<a href='http://www.chesapeakebay.net/maps/map/land_cover_chesapeake_bay_watershed'>view map</a>) <strong>Chesapeake Bay Watershed</strong> (<a href='http://www.chesapeakebay.net/maps/map/chesapeake_bay_watershed1'>view map</a>) <strong>Population (2010)</strong> (<a href='http://www.chesapeakebay.net/maps/map/population_2010'>view map</a>) <strong>Chesapeake Bay Mean Surface Salinity - Fall (1985-2006)</strong> (<a href='http://www.chesapeakebay.net/maps/map/chesapeake_bay_mean_surface_salinity_fall_1985_2006'>view map</a>) <strong>Chesapeake Bay Segmentation Scheme (For 303d listing - 92 segments)</strong> (<a href='http://www.chesapeakebay.net/maps/map/chesapeake_bay_segmentation_scheme_for_303d_listing_92_segments'>view map</a>) <strong>Chesapeake Bay Mean Surface Salinity - Spring (1985-2006)</strong> (<a href='http://www.chesapeakebay.net/maps/map/chesapeake_bay_mean_surface_salinity_spring_1985_2006'>view map</a>) <strong>Point Sources and Priority Agricultural Watersheds - Maryland</strong> (<a href='http://www.chesapeakebay.net/maps/map/point_sources_and_priority_agricultural_watersheds_maryland'>view map</a>)

Data Hub

The data hub is an interface that provides access to several types of data related to the Chesapeake Bay. Bay Program databases and can be queried based upon user-defined inputs such as geographic region and date range. Each query results in a downloadable, tab- or comma-delimited text file that can be imported to any program (e.g., SAS, Excel, Access) for further analysis.


There are currently over 800 Chesapeake Bay Program publications from 1957 through the present. Many of our publications (those labeled with a pdf icon) require Adobe Acrobat Reader for online viewing.

Bay Barometer: Health and Restoration in the Chesapeake Bay Watershed (2013-2014)

Download: Electronic Version

The data in Bay Barometer reflect the Chesapeake Bay’s health over the course of many years and, in some cases, decades. The publication offers a snapshot of the best available information from 2013 and 2014 on ecological health and our…

Bay Barometer: Health and Restoration in the Chesapeake Watershed 2012-2013

Download: Electronic Version

The Chesapeake Bay is a dynamic system. Across the watershed, rainfall, temperature and other conditions can fluctuate from month to month and year to year, impacting the surrounding environment. But tracking changes in ecological health…

Chesapeake Bay Underwater Grasses

Download: Electronic Version

Bay scientists believe that underwater bay grasses, also called submerged aquatic vegetation (SAV), once blanketed nearly 200,000 acres in the shallow waters along the shoreline of the Chesapeake Bay. The Chesapeake Bay Program partners…

Chesapeake Bay Watershed Public Access Plan

Download: Electronic Version

The Chesapeake Bay and the major rivers are the region’s ecological and cultural lifeblood. They are the primary features that have shaped human habitation for millennia.

The very resource that means Chesapeake or Susquehanna or Potomac…

Introduction to an Ecosystem 2000

A comprehensive overview of the geology and waters of the Chesapeake Bay and its habitats, biological communities and living resources. The Living Natural Bay/Ecosystems, Watersheds, Environmental Stewardship and Sustainability of the…

See more publications.

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