Johnson County officials have issued a mandatory evacuation of several rural neighborhoods due to high water levels from the nearby Coralville Lake Reservoir.
Johnson County supervisor Terrence Neuzil says new projections Wednesday indicate the reservoir's water levels may exceed 712 feet and top the spillway as early as July 9. The reservoir's level was at 701.8 on Wednesday morning but could eventually rise as high as 713 or 714 feet.
The evacuation means electricity and natural gas will be turned off in the affected areas.
Neuzil says the reservoir is filling up because of the rain-swollen Iowa River. He warned the reservoir also spilled over in 2008, leading to significant flooding in the area.
Officials around eastern Iowa are monitoring river levels following recent severe weather.