The Dutch abbreviation stands for Coördinatiecommissie Regionaal Onderzoeksprogramma, literally the Coordination Commission Regional Research Programme.
The territory of a water board generally covers several municipalities and may even include areas in two or more provinces.
Municipalities are the second-level administrative division in the Netherlands and are subdivisions of their respective provinces.
Their duties are delegated to them by the central government and they are ruled by a municipal council that is elected every four years.
Municipalities themselves are informally subdivided into districts and neighbourhoods for administrative and statistical purposes.