I 2 of 9 Illinois River at Henry, IL, a bit of history. (That may sound redundant, but there's an Illinois River in Oklahoma, too. I've known about it for over 10 years and I'm still trying to wrap my mind around it!)
Monument commemorating the demolished lock and dam.
Illinois River History - Monument by
rubyj29, on Flickr
What's left of the lock, behind a pylon of the bridge. Unfortunately the photo is more atmospheric than informative, but the highs were in the 20's and I got my feet wet emptying a fountain in my garden I've been planning to empty for 2 weeks when the highs were above freezing, after weakening up 4 inches of ice with a brick and smashing through it with a tiling spade, and that was it for my outdoor activities today! I didn't go down and reshoot.
Illinois River History Remains of Lock by
rubyj29, on Flickr
Steamboat Elsie's Lighthouse, a privately maintained lighthouse about 15 feet tall, and built with remnants of the dam when it was destroyed.
A 2012 article about the lighthouse from Lighthouse Digest can be found here:
Lighthouses@Lighthouse Digest ... Steamboat Elsie
I keep meaning to go down there and check, but although I've heard that it was still being kept in service by the current owners, the flood of Spring 2013 may have knocked its light out, at least for the time being. The lighthouse itself is still in good shape - this was taken this summer.
Illinois River History - Steamboat Elsie's Lighthouse by
rubyj29, on Flickr