|Mississippi River Lock and Dam System|
(click to enlarge)
Large numbers of several species of non-native, Asian carp have been progressively making their way upstream in the Mississippi River Basin for decades, since their release in the 1970s into the Lower Mississippi River from fish farming operations. Since then, Bighead, Silver and Grass carp (and less extensively Black carp) have been captured throughout much of the Mississippi River watershed from Louisiana to South Dakota, Minnesota and Ohio. Populations of both species are well-established in the Mississippi River and its tributaries downstream of Pool 16, formed by Lock and Dam 16, near Muscatine, Iowa (around river mile 457.2).
The MN DNR plans to continue its Asian carp sampling effort this week in an attempt to determine if additional and smaller carp are in the upper reaches of Pool 2.