ROCK ISLAND, ILL. -- Recent heavy rainfall in the Upper Mississippi River basin continues to raise river levels along the Mississippi River. In an effort to reduce river stages and minimize impacts to Mississippi River communities downstream from the confluence of the Des Moines and Mississippi rivers, Lake Red Rock outflows are being reduced. By tomorrow, Wednesday, April 20, Lake Red Rock outflows will be reduced from approximately 19,600 to 5,000 cubic feet per second1 and the Lake will be begin to store water.