The site's called Waterlines, and it's a blend of history and poetry about the UK's waterways network.
This is the photo. It's of Bridge No 1 on the Trent and Mersey Canal. The poem is, apparently, about this very bridge. I've said yes, and I await the blog post with interest!
Meanwhile, here's something I wrote some time ago, when Jobbing Writer Morning AJ was known as the History Anorak......
What Masefield Missed
Painted narrow horse-boat with its polished butty
Climbing through the lock pounds, one by one
With a cargo of limestone
Iron waste, spelter
Carpets, vinegar
Or pure black coal.
Based on Cargoes by John Masefield