Any canal tunes will do.
Tune rather than songs. I have various versions of "le Canal en Octobre" for instance and that is about a French canal. & permission from Frederick Paris to use it.

Various folkies here in the UK are composing tunes - though this takes time. Inspiration can be nurtured but not forced.

Song tunes are not as interesting unless played as instrumentals.

But any suggestions would be useful and I can research from there.

TIA