Dataset - CKAN MobiDataLab

NWB waterways - Waterway sections (RWS)

The national waterways are also part of the National Road File (NWB). This dataset contains the waterway sections of the navigable waterways for commercial and recreational...
NWB waterways - Mutations_kilometre markings (RWS)

The national waterways are also part of the National Road File (NWB). This dataset only contains the changes to km markers that were carried out in the National Roads File (NWB)...
NWB waterways - Changes_waterway sections (RWS)

The national waterways are also part of the National Road File (NWB). This dataset only contains the changes on waterway sections that were carried out in the National Roads...

You can also access this registry using the API (see API Docs).