Forecast changes mean no mandatory evacuations near Coralville Dam

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Parts of Eastern Iowa are feeling the effects from a very wet fall. The Army Corps of Engineers announced that water outflow at the Coralville Dam has been increased. To relieve the dam after months of heavy rainfall.

Johnson County Emergency Management held a press conference today about the flooding that will occur from the Dam outflow increase.

 “This is a good news press conference,” said Johnson County Emergency Manager, Dave Wilson. 

Wilson said changes in the forecast now predict less rainfall. Which is good news for the Coralville Reservior, which has been filling up after months of heavy rainfall. 

“Right now we are at 708.9 which is 81% storage capacity, right now the average inflow is 21,000 cfs and outflows right now is just under 12,000. Our peak, again is supposed to be the 20th of October by current forecasts,” said Jonathan Wuebker, assistant operations manager for the Army Corps of Engineers . 

Wuebker said current predictions mean they don’t need to increase the outflow at the Coraville Dam as much as originally anticipated. Which would have triggered mandatory evacuations, as homes along the river would have went under water.

“That is not going to happen, they don’t anticipate releasing more than 12,000 cfs of water so we presently do not intend to do any mandatory evacuations anywhere in Johnson County which is good news for those folks,” said Wilson.

Iowa City officials and Johnson County Emergency Management both noting that flood control systems in Iowa City, like the elevation of Dubuque Street are working as planned. While rural areas of Johnson County near the river will see most of the impact. 

 “Our problem ares continue to be the tri-county bridge area in the very south end of jOCO, the area near sand road that’s be inadaded since last Saturday,” said Wilson.

Already more than 15 roads are closed throughout Johnson County due to flooding. While it might seem obvious, Emergency Management said, if you see a road closed sign don’t drive around them. They are closed for a reason.

Ashley Neighbor

Ashley Neighbor

Reporter, Cedar Rapids
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