ROCK ISLAND, Illinois - The U.S. Army Corps of Engineers, Rock Island District is in the process of updating the Des Moines River Regulation Manual and is inviting public comment through March 31 from anyone wishing to provide input. A copy of the current manual and a link to a video presentation, used by the Rock Island District during public scoping meetings, can be found at https://go.usa.gov/xXqmx. The video and website provide detailed information about proposed updates to the Des Moines River Water Control Plan that includes the Water Control Manuals for Saylorville Lake and Lake Red Rock.