The flooding situation in eastern Iowa will get worse next week.
The U.S. Army Corps of Engineers fully opened the Coralville reservoir gates Saturday releasing 18-thousand cubic feet of water per second down the Iowa River.
Officials expect the water to top the emergency spillway on Thursday.
Water levels at the lake are forecasted to continue rising through next weekend.
Once the water tops the spillway, Johnson County officials estimate 50 to 60 structures will take on water.
Their preliminary damage estimates stand at about $4-5 million.
As people in Iowa City and Coralville continue to watch levels on the Iowa River, Congressman Dave Loebsack stopped in Iowa City Saturday to see how the flood preparation efforts are going.
“I think since ’08 we have learned a lot about how to manage a real potential disaster and the University of Iowa, all the governmental entities here, the core, others are all doing a really, really fantastic job,” Rep. Loebsack said.
Emergency management officials have issued a mandatory evacuation for some residents living in rural portions of southern Johnson County.
Officials warned residents that if they do not evacuate they will not receive any emergency services.