Table 1.

Overview of Attributes and Levels

WFD(Non)-UseLevelsExplanation
HydromorphologyWalkingGoodArea expansion and nature-friendly dikes/dunes
ModerateNature-friendly dikes or dunes
BadCurrent situation: hard water banks
Chemical water qualitySwimmingGoodHigh clarity, no algae occurrence or odor
ModerateMedium clarity, occasional algae and odor
BadCurrent situation: Low clarity, frequent algae and odor problems
EcologyNature amenitiesGoodHigh number and diversity of fish and birds, including rare species
ModerateMedium number and diversity of fish and birds, few rare species
BadCurrent situation: low number and diversity, hardly any rare species
  • Note:WFD, European Water Framework Directive.