Illinois dam fails after heavy rains and tornadoes sweep across state; hundreds told to evacuate homes NBC ChicagoDam Fails in Nashville, Illinois, Endangering Roughly 200 Homes, Officials Say WSIL TVWater surges into southern Illinois town after dam fails Yahoo! VoicesImminent dam failure, flash flooding prompt evacuations in southern Illinois Fox Weather Residents ordered to evacuate after Nashville, Ill. dam failure KTVI Fox 2 St. Louis