Great Lakes Monitoring
Great Lakes Trophic State 2001
Goal: Oligotrophic state in Lakes Superior, Michigan, Huron and Eastern Basin of Lake Erie; oligomesotrophic in Lake Ontario and in Central Basin of Lake Erie; mesotrophic in Western Basin of Lake Erie.
Status: Goals are met.
Issues: Increasing phosphorus loads and disruptions of food web by aquatic nuisance species may cause future problems in Lake Erie's Central Basin.