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SURVEILLANCE
FOR RUFFE IN
THE GREAT LAKES, 2006




  

    

      

        
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            1.  Thunder Bay Harbour *
            


            7.  Munising Bay
            


            13.  Port Dolomite
            


            19.  Saginaw River
          

          

            


            2.  Keweenaw Waterway *
            


            8.  West Bay (Grand Marais) **
            


            14.  Cheboygan River
            


            20.  Harbor Beach	


            
          

          

            


            3.  Pequaming Bay
            


            9.  Whitefish Bay (Abandoned Harbor)
            


            15.  Thunder Bay River
            


            21.  St. Marys River (De Tour Passage)
          

          

            


            4.  Huron Bay
            


            10.  Tahquamenon River
            


            16.  Thunder Bay (River Ship. Chan.)


            
            


            22.  St. Marys River  (Munuscong Channel)
          

          

            


            5.  Upper Marquette Harbor
            


            11.  St. Marys River (Algoma Steel)
            


            17.  National Gypsum


            
            


            23.  St. Marys River  (South Sugar Island Ferry)
          

          

            


            6.  Lower Marquette Harbor


            
            


            12.  St. Marys River (Purvis Marine)


            
            


            18.   Au Gres River   


            
            


            24.  St. Marys River  (SSM Municipal Harbor)    


            
          

          

             
             
             
             
          

          

             
            
            



            * Locations where ruffe were captured.

            ** New ruffe discovery.

             
          

        

        

          
Figure 1.  Locations surveyed for ruffe in the Upper Great Lakes, 2006.