US Army Corps of Engineers
Rock Island District

  • Lake Update: June 14, 2019

    The tainter gates were closed June 14 and the Red Rock Dam's outflow was switched to the sluice gates (gates located below the water level of the dam) due to decreasing lake level and inflows. As a result, the restricted zone on the lake 1/2 mile from the dam has been removed. Please note that there is still a restricted zone by the dam's forebay (approx. 600 feet from the dam gates). Howell Station Campground, Ivans Campground, South Tailwater Recreation Area and Howell Station Landing are open at this time. Boat ramps that are currently usable for lake access include those at the Whitebreast Recreation Area, Marina Cove and Elk Rock State Park (just off of Highway 14). Please note that parking areas at the Marina Cove ramp are very limited during times of high water. All other boat ramps on the lake are closed due to high water levels. The North Tailwater Recreation Area continues to be closed due to construction on the hydropower project. Get daily lake level and dam outflow and forecast information on or This information may change frequently depending upon additional precipitation and other factors; visit the website more frequently during these time periods to keep aware of the latest data available.
  • Public Input Sought on Cedar Rapids Flood Risk Management Project Draft Environmental Assessment

    ROCK ISLAND, Illinois - The U.S Army Corps of Engineers, Rock Island District is seeking public review and comment regarding a draft Environmental Assessment (EA) for the Cedar Rapids, Iowa, Flood Risk Management Project.
  • Visitor Observation Area to Temporarily Close at Marseilles Lock

    Due to major rehabilitation work at Marseilles Lock on the Illinois Waterway, the U.S. Army Corps of Engineers is temporarily closing the visitor observation area from June 1 to Aug. 31.
  • Corps of Engineers to Increase Coralville Lake Outflows

    IOWA CITY, Iowa – The U.S. Army Corps of Engineers Rock Island District is temporarily increasing outflows at Coralville Lake from 6,000 cubic feet per second (cfs) to 10,000 cfs to expedite evacuation of flood waters from the reservoir. Seasonal constraints, typically used to reduce flood crests downstream, have also been raised from 14 to 19 feet at Lone Tree, Iowa, and from 21 to 25 feet at Wapello, Iowa, to assist in maintaining flood storage capacity within the reservoir.
  • Chief of Engineers approves plan for preventing Asian carp transfer into Great Lakes

    ROCK ISLAND, Illinois – A plan to prevent the spread of Asian carp into the Great lakes has been approved by the U.S. Army Corps of Engineers top general. Commanding general of the U.S. Army Corps of Engineers, Lt. Gen. Todd Semonite, approved the recommended plan today by signing the Chief’s Report for The Great Lakes Mississippi River Interbasin Study – Brandon Road Final Integrated Feasibility Study and Environmental Impact Statement. The Chief’s Report will be sent to Congress for authorization consideration.
  • Opening Delayed at Auxiliary Lock 14

    PLEASANT VALLEY, Iowa – The U.S. Army Corps of Engineers, Mississippi River Project announces the auxiliary lock at Locks and Dam 14 in Pleasant Valley, Iowa, will not be opening Memorial Day weekend as scheduled due to Spring flooding.
  • Partial Closures to Begin June 1 at Starved Rock and Marseilles Locks

    ROCK ISLAND, Illinois. – Starting June 1, Starved Rock and Marseilles locks on the Illinois Waterway will be closed to commercial and recreational traffic from 6 6 p.m. to prepare for upcoming major maintenance. The 12-hour closures will take place daily from June 1 to July 3 and from July 8 to Aug. 16. Both locks will be open for normal, 24-hour operation July 3-7 to clear any backlog of traffic and accommodate for increased recreational boating during the Independence Day holiday.
  • Final Free Boating Safety Class

    Rock Island, IL - The U.S. Army Corps of Engineers Mississippi River Project announces that the final boating safety education class they will be offering before the summer season will be held on May 18th. The class will be held at the Mississippi River Project Office at Locks and Dam 14 in Pleasant Valley, Iowa from 8:00 a.m. - 4:30 p.m.
  • Illinois Waterway Visitor Center Closes Due to High Water

    OTTAWA, Illinois. - The U.S. Army Corps of Engineers, Rock Island District, has temporarily closed the Illinois Waterway Visitor Center located at Starved Rock Lock and Dam in Ottawa, Illinois, due to rising river levels.
  • Saylorville Lake and Lake Red Rock Operating Under Newly Updated Water Control Plans

    ROCK ISLAND, Illinois – The U.S. Army Corps of Engineers, Rock Island District has updated the Des Moines River Basin Master Regulation Manual and, as a result, now operates Saylorville Lake and Lake Red Rock under newly updated Water Control Plans.