Here are some pages about the Junction Navigation, which later became known as the Ballinamore & Ballyconnell Canal and later still as the Shannon–Erne Waterway.
The role of the cads and bounders of the Ulster Canal Company in getting a canal built at taxpayers’ expense
The construction of the Junction Navigation at Aghoo (Lock 4)
Lock gear old and new
The Foyle and the Strabane Canal in the 1890s
And here is a link to a different website that outlines what is perhaps the most insane Irish waterway proposal ever. Which, given the competition, is some achievement. If folk want to move boats between the Atlantic and the Erne, or vice versa, why can’t they pay for their own cranage and transport?