California Home    Site Map San Francisco Bay Monitoring Program Boat Tow Locations CVBDB Home Real Time Monitoring 20mm Delta Smelt Survey North Bay Aqueduct Larval Survey Spring Kodiak Trawl Survey Fall Midwater Trawl Survey Summer Townet Survey Bay-Delta Monitoring Fish Salvage Monitoring IEP Boat Schedules E mail Us Bay-Delta Region Resources Agency Dept of Fish and Game    My CA    CVBDB San Francisco Bay Monitoring Program Boat Tow Locations One tow each was made with an otter trawl, midwater trawl, and plankton net at each of the open water stations. Stations were sampled monthly with the following exceptions: sampling did not occur from September 1989 to January 1990, November to January 1990-1991, 1991-1992, 1992-1993. Plankton sampling at open water sites was discontinued after July of 1989. Back to Top of Page 2008 State of California. Arnold Schwarzenegger, Governor. Conditions of Use Privacy Policy