Upper Midwest Environmental Sciences Center
![folder.gif](../../../../images/icons/folder.gif)
![](../../../../images/icons/tree_f.gif)
![](../../../../images/icons/spacer.gif)
![](../../../../images/icons/tree_f.gif)
Figure 13. | Percent frequency of occurrence of submersed aquatic vegetation in upper Pool 4, 19912001, Upper Mississippi River System. |
![]() |
Page Last Modified: April 17, 2018
Figure 13. | Percent frequency of occurrence of submersed aquatic vegetation in upper Pool 4, 19912001, Upper Mississippi River System. |
![]() |