Publications

The Chesapeake Bay's 92 subwatersheds, also known as segmentsheds.

View document [PDF, 1.3 MB] Chesapeake Bay Segmentsheds

The average long-term salinity of the Chesapeake Bay and its tidal tributaries.

View document [PDF, 1.7 MB] Chesapeake Bay Mean Surface Salinity (1985-2018)

Counties and municipalities within the Chesapeake Bay watershed.

View document [PDF, 1.7 MB] Chesapeake Bay Counties

Map of the Shallow Water-Submerged Aquatic Vegetation Designated Uses of the Chesapeake Bay. 

View document [PDF, 2.4 MB] Shallow Water-Submerged Aquatic Vegetation Designated Use

A map of the Dissolved Oxygen Designated Uses of the Chesapeake Bay. 

View document [PDF, 1.8 MB] Dissolved Oxygen Designated Uses

A map of the Migratory Fish Spawning & Nursery Designated Uses of the Chesapeake Bay. 

View document [PDF, 2.2 MB] Migratory Fish Spawning & Nursery Designated Use

Different species of underwater grasses are generally found in waters of a specific salinity range.

View document [PDF, 1.5 MB] Submerged Aquatic Vegetation (SAV) Salinity Zones in the Chesapeake Bay

The co-occurrence of habitats for multiple water column and bottom-dwelling fish and shellfish species,

View document [PDF, 2.3 MB] Priority Living Resource Areas in the Chesapeake Bay

Areas within which ecosystems and the type, quality and quantity of environmental resources are generally similar.

View document [PDF, 1.5 MB] Omernik Ecoregions in the Chesapeake Bay Watershed

Eleven distinct regions with their own rock types and groundwater discharge values.

View document [JPG, 171.4 KB] Hydrogeomorphic Regions in the Chesapeake Bay Watershed