Version 4.9.2

Welcome to the DataHub

ALERT: We’ve re-launched the DataHub to improve your access to Chesapeake Bay Program (CBP) data resources. The new features include a streamlined user interface, access to larger data downloads, more download formats (tab delimited, XML, CSV, and JSON), and an improved application programming interface (API) for developers.

What is the DataHub?

     The DataHub is the Chesapeake Bay Program’s primary tool for searching and downloading environmental data for the Chesapeake Bay watershed.

     This interface provides access to several types of data related to the Chesapeake Bay. Bay Program databases 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. Comments regarding the interface are encouraged. Questions in reference to the data should be addressed to the contact provided on subsequent pages.

     To insure data accuracy, the Bay Program maintains a Quality Assurance Program that monitors and tracks several environmental data sets that look at pollutants, water quality, land use, algae, fish, crabs and submerged aquatic vegetation. Contact the listed data program contact for questions about the data. (see comment #1 above) Quality assurance, metadata and other documentation about the specific data programs are available on each of the data program pages.

Developers: The Data Hub is designed on a service-based architecture, utilizing APIs (Application Programming Interface) to facilitate the reuse of our data resources. More information and API documentation is available here.

What type of data is available?

CBP Water Quality Data (1984-present): measured and calculated physical and nutrient parameters

CBI Water Quality Data (1949-1982): measured physical and nutrient parameters

Tidal Plankton Data (1984-2012): phytoplankton, picoplankton, microzooplankton, mesozooplankton, gelatinous zooplankton, primary production

Tidal Benthic Data (1971-2013): taxonomic abundance and composition, biomass, sediment, water quality and Indicator of Benthic Integrity (IBI)

Nontidal Benthic Data (1986-2019): macroinvertebrate taxonomic counts, habitat assessment, water quality, and Benthic Index of Biological Integrity (BIBI)

Fluorescence Data (1984-2012): fluorescence, chlorophyll a, phytoplankton, vertical and horizontal profiles

Nutrient Point Source Data: monthly data of flow and concentrations of TN, NH3, NO23, TON, TKN, TP, PO4 and TOP

Toxics Data: chemical contaminant and threshold data