Lake Champlain Fish and Wildlife Resources Office
Northeast Region

Annual Lamprey Assessment Reports

The United States Fish and Wildlife Service is responsible for assessing the sea lamprey population of Lake Champlain.

This includes:

  • Assessing the presence or absence of sea lamprey larvae in the over 200 tributaries to Lake Champlain
  • Assessing the larval desities and distribution in rivers and streams
  • Assessing larval densities and distribution on river deltas in Lake Champlain
  • Assessing trends in adult sea lamprey spawning populations during their spring migration

At the end of each field season, these data are compiled into reports. Because of the life cycle of lamprey (live 4 years as larvae before becoming parasitic), each site gets reassessed every four years.





Last updated: December 28, 2010
Lake Champlain Fish and Wildlife Resources Office
Western New England Complex
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