A working document for the mapping of Rijkswaterstaat DONAR parameters to Um Aquo, CF and BODC/SeaDataNet is maintained in the OpenEarth repository: https://repos.deltares.nl/repos/OpenEarthTools/trunk/matlab/applications/Rijkswaterstaat/rws_waterbase_name2standard_name.xls (OpenEarth password required).
For access, please apply for a free account , register for free at http://OpenEarth.euoss.deltares.nl).
A presentation on this matter was presented in the joint Rijkswaterstaat-Deltares-KNMI SOS2012 project (ppt, only for SOS2012 members).
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