IOWA CITY, Iowa — Officials on Monday said the outflow of water from Coralville Lake will be gradually reduced as the threat of a spillover declines.
The U.S. Army Corps of Engineers said the reservoir is expected to peak Tuesday at just over 708 feet. That is below the top of the 712-foot spillway.
The current outflow of water at 18,000 cubic feet per second will remain until July 14. It will then be gradually reduced.
Officials had been cautious of recent rains in the area potentially causing water to go over the lake's spillway. A similar situation happened in 2008 and 1993, resulting in severe flooding in Iowa City, Coralville and other nearby communities.
Weather officials said rain on Sunday had little impact on the Iowa River Basin, which affects the reservoir's water levels. Officials are also monitoring rain predicted Monday.
Residents in surrounding communities are still encouraged to keep up flood barriers in the days ahead. Mandatory evacuations remain in place for rural Johnson County homes near the Iowa River, and electricity and natural gas remain off for affected areas.
Still, the Johnson County Emergency Operations Center has switched to monitoring mode. It means daily press conferences will be suspended and conducted on a needed basis.