Engineers studying how the Kimball Street dam’s removal could affect Elgin’s water supply found lower Fox River water levels shouldn’t impact the intake system unless there’s extreme erosion.

But it’s difficult to know how much erosion would occur without further study, consultants told the Elgin City Council.

More data and models to forecast how the river erosion could occur will be developed under a contract amendment the council approved last week with Engineering Enterprises Inc. and the University of Illinois Department of Civil and Environmental Engineering. The additional work will cost the city $338,028.

“We have to get this right,” Councilman John Steffen said at the meeting. “We have to make sure we don’t jeopardize our water supply.”

Last year Elgin hired the engineering fir

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