Appendix D 



Density distributions based on shell height 



Reach 15 of the Upper Mississippi Rrver 



Description 



Page 



Parti. Density distributions for commercial mussel species from 

 Sylvan Slough (RM 485.8), Case-IH (RM 488.6), and 

 Illiniwek (RM 492.4), 1994-95. 



Figure D-1 

 Figure D-2 

 Figure D-3 

 Figure D-4 



Amblema pUcata - Threeridge 

 Megalonaias nen'osa - Washboard 

 Quadnda quadnda - Mapleleaf 

 Ouadnda piistidosa - Pimpleback 



D-2 



D-3 

 D-4 

 D-5 

 D-6 



Part II. Density distributions for commercial mussel species at Sylvan 

 Slough (RM 485.8) from 1983, 1985, 1987, and 1994-95. 



Figure D-5 

 Figure D-6 

 Figure D-7 

 Figure D-8 

 Figure D-9 



Amblema pUcata - Threeridge 

 Megalonaias nen'osa - Washboard 

 Quadnda quadnda - Mapleleaf 

 Ouadnda pustulosa - Pimpleback 

 Ouadnila metanevra - Monkeyface 



D-7 



D-8 



D-9 



D-10 



D-11 



D-12 



Part III. Density distributions for commercial mussel species at 

 Case-IH (RM 488.5) from 1985, 1987, and 1994. 



Figure D-10 

 Figure D-11 

 Figure D-12 

 Figure D-1 3 



Amblema plicata - Threeridge 

 Megalonaias nen'osa - Washboard 

 Ouadnda quadnda - Mapleleaf 

 Ouadnda pustulosa - Pimpleback 



D-13 



D-14 

 D-15 

 D-16 

 D-17 



Page D-1 



Whitney et al , Unionid Sun-ev - Reach 1 5 UMR 



