<p>Main (1200-foot) lock at McAlpine Locks:.
"John M. Rivers"  (doc. # 633894) downbound..
Ohio River mile 607.
upper gauge = 18 feet.
Louisville, Kentucky.
24-Jan-1999.
File # 99a053.
_____________.
.
Kodak Portra 400NC, 6x9 cm.
</p>
Epson V500 scanner; Vuescan software.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/70020260@N04">William Alden</a> from Louisville, Kentucky, USA
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/bill_alden/6635505789/">99a053_8_megapixels: John M. Rivers</a>