Chesapeake Bay Observing System (CBOS)

The Chesapeake Bay is the largest shallow-water estuary in the Americas, encompassing 64,000 square miles, and including parts of six states –New York, Pennsylvania, West Virginia, Delaware, Maryland and Virginia—and the District of Columbia. The goal of the Chesapeake Bay Observing System (CBOS) is to develop a widespread network of observing and monitoring stations in open and deep water in the Bay tributaries and main stem. Chesapeake Bay CBOSImage of the 'Eyes on the Bay' website

Continuous Monitoring stations at Eastern Bay – Chesapeake Bay Environmental Center (CBEC) and Rhode River – Smithsonian Environmental Research Center (SERC) will remain active due to partnerships with CBEC and SERC, respectively.   In total, MDDNR will have more than 40 continuous monitors deployed in 2009 throughout the Chesapeake Bay and Coastal Bays with approximately a quarter displaying data in real-time on the MDDNR Eyes on the Bay web site: (

Ocean Observation Sites