Long Term Management Strategy LogoDredging projects include sediment sampling information that allows the DMMO to determine the suitability of that material for disposal or reuse at one of the managed dredged material placement sites in and around San Francisco Bay.  The information collected for any project may include physical, chemical, and/or biological testing data.  Available testing data for all Bay Area dredging projects has been compiled in a database that is available to search here.  (The database currently includes testing data from approximately 2000 - 2010.)

NOTE: The DMMO database accepts data submitted by testing labs without change or filtering. Macros built into the DMMO Excel Templates check to ensure that the data are in an acceptable format for submission to the DMMO database, but they do not evaluate data quality or accuracy. This means that users are responsible for screening whether any data they view are appropriate for their intended uses.

You may view or download existing data either by building your own Custom Queries here or by using the Automated Data Queries provided below.  (The ability to select data spatially from a map will be coming in a future update.)

Testing laboratories with approved passwords may submit new testing data via the Meeting Area.  (Lab data are uploaded via standardized Excel Templates. The DMMO Excel Templates, an example data file, and a Template User Manual are available here.)

Data Last Updated: August 2022

Automated Data Queries

Clicking on the links below will generate the described information from the database.

Study List: Results are organized by study type and name, showing total number of samples (not including controls), and the date range of the study. 

Geographic Distribution: Geographic distribution of samples. 

Statistical Range of Sediment Chemistry: Values excluding data below detection, organized by chemical group. 

Statistical Range of Tissue Laboratory Bioaccumulation Chemistry: Values excluding data below detection, organized by species and chemical group. 

Statistical Range of Bioassay Data: Values excluding negative control samples, organized by taxonomic group, species, and test end point.