Shallow, broad and vegetated channels designed to store and/or convey runoff.
- Based on Stella definitions, adapted by NWRM project experts and validated by the European Commission

Collecting and storing rainwater for subsequent use ﾖ for example, using water butts or larger storage tanks.
- Based on Stella definitions, adapted by NWRM project experts and validated by the European Commission

Those expenditures that, once committed, cannot be (easily) recovered. These costs arise because some activities require specialized assets that cannot be readily diverted to other uses.