The L'Aff is a small river and is part of the Waterways of Mainland Europe. It runs for 5 miles and 4¾ furlongs from La Gacilly (which is a dead end) to Painfaut Junction (where it joins the Canal de Nantes a Brest (Est) - Pontivy to Redon).
The exact dimensions of the largest boat that can travel on the waterway are not known. The maximum headroom is not known. The maximum draught is not known.
|Glenac||4 miles and 7 furlongs||0 locks|
|Painfaut Junction||5 miles and 4¾ furlongs||0 locks|