Submitted by Anonymous on Wed, 03/04/2015 - 11:04 Definition From the perspective of Natural Water Retention Measures (NWRM), maintenance is the set of actions or processes that are performed to keep an already existing natural process functioning in the best possible manner. Maintenance can include physical activities, the planning process and communication. Links Relation type Related Concept Natural Water Retention Measure Type of action Maintenance Full Context Pathway(aka Context) Default view Area(aka Level or Site) ALL