Mike Davis, a river ecologist for the Minnesota
DNR, compared differences in river character and ecological function
between the wild and scenic study stretch of the Mississippi River and
the "Big River" as the Mississippi appears below St. Paul. He
noted that the Mississippi River character and function in our study area
was not disturbed by numerous locks and dams necessary for commercial navigation
as it is on the Big River. The faster water flows, shallower water depths
and rocky, gravelly and sometimes sandy river bottom provides unique habitat
for numerous aquatic species such as smallmouth bass and numerous species
of freshwater mussels. The quantities, health, and diversity of mussels
are good indicators of whether an aquatic environment has been degraded,
is improving or is in good condition.
