Iowa City, Iowa -- Increased inflow into Coralville Lake from its 3,084-square-mile watershed on the Iowa River continues to raise pool levels. In response to rainfall occurring over the Iowa River watershed; subsequent increased inflows into Coralville Lake; requests from the cities of Iowa City and Coralville, and the University of Iowa; and the potential for additional rainfall over the next several weeks, the U.S. Army Corps of Engineers is increasing outflows from Coralville Lake.