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I Forgot to mention that Covington is on the Ohio River whch can have some fierce floods. The Ky side of the river is mostly flood plain. Newport, east of Covington but still on the Ohio River, has large, impressive levees to protect it.
Levees, by the way, are a temporary solution. While they keep the river out of the flood plain, the river tends to build up silt deposits on its bed instead of depositing the silt on the flood plain where it used to pre-levee. Gradually the river bed gets higher so that the levees are less effective. Hence, dredging is needed to remove the silt from the river bed. When we mess around with the forces of nature, we have to be really careful...
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