ROCK ISLAND, Ill. – Beginning Nov. 14, four employees from the U.S. Army Corps of Engineers, Rock Island District, will conduct a structure inventory along the Keith Creek main stem as part of the Keith Creek and Alpine Dam Feasibility Study. The Corps will survey elevations and take notes and photographs of structures. This study is being conducted in partnership with the City of Rockford. Weather permitting, the work is scheduled for completion in several weeks.