Water column chlorophyll concentrations associated with clam flat surveys during year 2010 in the Plum Island Sound estuary, Newbury, Rowley and Ipswich, MA.

Six to eight sites in the Plum Island Sound estuary , the mainstem of the Parker River and Rowley River, in areas close to where other clam samples were being taken for other studies, were selected for monthly chlorophyll sampling to determine the concentration of phytoplankton at these sites.