The U.S. Army Corps of Engineers, Rock Island District, is hosting two public open house events this week aboard the Motor Vessel Mississippi. The first will be held Tuesday, Aug. 10 from 1-5 p.m. at River Heritage Park in Davenport, Iowa. The second will be held Wednesday, Aug. 11 from 9 a.m. to 1:30 p.m. along the Mississippi Riverwalk at the Port of Dubuque, in Dubuque, Iowa, next the National Mississippi River Museum and Aquarium.