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Welcome to the Bay Delta and Tributaries (BDAT) Project site.  BDAT contains environmental data concerning the San Francisco Bay-Delta and provides public access to that data.  Over fifty organizations contribute data voluntarily to this project.  The database includes biological, water quality, and meteorological data.  These can be used to gauge the health of the estuary and to manage water and environmental resources.

BDAT is a part of the California Environmental Data Exchange Network (CEDEN), which includes projects and organizations from all parts of the state.  Find out how you can contribute and benefit from participation in CEDEN.

• Data Retrieval shows the actual data in the BDAT database in detailed reports.  Here, the user can choose their own selection criteria in a step-by-step manner, then download the data in a variety of formats.
  
  
• Data Summaries show the data in the BDAT database summarized in various ways, which may be helpful in deciding what to select in the data retrieval section.  This section also provides project metadata.
  
  
• BDAT Links are links to specialized web applications outside of this site that access subsets of the BDAT database. 
  
  
• Provider Login is an area specifically for our data providers.  A login and password are required for access.
  
  
• Special Reports are customized reports that are available for public access.  Examples include reports related to Chinook and Steelhead salmon monitoring.  New reports are added upon request.
  
  
• Sponsors is a list of our sponsoring agencies and links to their web sites.  These agencies provide funding and data for this project.
  
  
• Contact gives information on how to contact us for any comments, questions or suggestions.  All input is appreciated and carefully considered.
  
  
• FAQ is a list of frequently asked questions about the site and how to use it.  Please contact us with any questions that are not on the list and we will be happy to assist you.