Alewife Counts
The chart shows the estimated number of adult alewives returning to spawn in the Parker River from 1972 to 1978 using data from a study by the University of Massachusetts.   In 1998 The Parker River Clean Water Association was formed and resumed the annual survey using the same counting methodology as the UMass study, yielding the results from 1998 to 2010.  The size of the reproductive migration has been much smaller in the last eight years.



2003 Report on: Status of River Herring on the North Shore of Massachusetts

2008 Alewife Report
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Updated March 3, 2011