![](https://www.pdfsearch.io/img/e0fdb7038aeac5c1e9805af561ce9346.jpg) Date: 2013-01-23 16:02:57
| | History of navigation improvements In 1885 the first Corps-built lock and movable dam project on the Ohio River was completed at Davis Island near Pittsburgh, Pa. In 1910, by passage of the Rivers and Harbors Act, CongAdd to Reading ListSource URL: www.lrl.usace.army.milDownload Document from Source Website File Size: 1,23 MBShare Document on Facebook
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