Charlie Horan (of Go with the Flow, the canoe expedition specialists) left a comment on my post about Abbeyleix (below) saying
I have some very very interesting pictures of the Barrow near source in flood taken just two weeks ago ….
And here they are. They are indeed interesting!
Even the indefatigable F E Prothero might have been put off …. He canoed down from Mountmellick to Athy in 1897, taking about eight and a half hours. Major Rowland Raven-Hart said that the Barrow had been canoed from a little above Portarlington (which is downstream of Mountmellick); there is a PDF of his book here.