The French network of waterways includes 100 canals and rivers, totaling over 8,000 kilometers. There are dozens of possible cruises, along a single canal or into other inter-connected waterways. Boats (within size limits) can pass through from the English Channel to the Med. The cruising waterways are shown on this map; canals are in blue, rivers are red.
Rental boats are offered in 9 areas of France by LeBoat.
EuroCanals Guide: Waterways of France is available for download or as a printed book: Cruising the Canals & Rivers of France.