Table E-3. Density distributions based on estimated age for selected unionid species from Case-IH 

 (RM 488.5) in Reach 15 of the Upper Mississippi River, 1994. Unionids were collected 

 from 72 quantitative samples covering a surface area of 1 8 ml 



Mean 14.00 3.61 



2.61 



0.83 21.00 13.78 9.17 



Page E-9 



Whitney et al., Unionid Survey - Reach 15 UMR 



