Pool 16 of the Upper Mississippi River extends 25.7 miles from Lock and Dam 16 in Muscatine to Lock and Dam 15 in Rock Island, IL. Pool 16 contains 11,630 acres of aquatic habitat. Pool 16 has islands, side channels, and backwaters throughout its length. Unlike many pools, the lower reach of Pool 16 is not an open expanse of water. The Rock River enters the Mississippi River in upper Pool 16 at Rock Island, Illinois.
Navigation maps are available from this US Army Corps of Engineers website (link takes you offsite).