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Corps "Opens The Gates" on Coralville Dam
Updated: Saturday, June 1 2013, 05:15 PM CDT
CORALVILLE DAM (CBS 2/FOX 28) - The U.S. Army Corps of Engineers Saturday opened the control gates of the Coralville Dam all the way Saturday, increaisng the outflow to 18,000 cubic feet per second (cfs).
Current projections are that the reservoir will reach full capacity of 712 feet on June 6th, and at that time the outflow from the spillway will increase to about 21,000 cfs.
The good news is that as thunderstorms and rain ease off upstream, the inflow into the Coralville Reservoir hit its peak early Saturday and is not expected to increase further without additional rain.
However, with that projected 21,000 cfs output, Johnson County emergency planners say it appears 50-60 structures are fulnerable to flooding, at least half of them in the unincorporated areasof Johnson County.
Estimates put that rural damage estimate at $4-5 million, and they're still trying to determin what the urban impact will be - that includes expected damage on the University of Iowa campus in Iowa City.
The County expects to close Rocky Shore Drive on Monday, but believes Foster Road will not be impacted.
Coralville has generally completed preparations along Clear Creek and Biscuit Creek and says volunteers are no longer needed there.
The US Army Corps of engineers has a webcam of the spillway at Coralville Dam which you can see here.