Tabel

The measures in the table are categorised in three types: prevention, adaptation and acceptance. These categories are explained below.

1. Prevention: measures that prevent further deterioration of the water quality. For example, filtering water containing micro pollutants before run-off; disconnecting downspouts to prevent sewer overflows; or constructing a buffer system in areas dependent on river water.
2. Adaptation: measures that mitigate any negative effects of climate change. For example, more frequent flushing of deteriorating surface water; or providing shade around surface water.
3. Acceptance: measures to accept a change in or deterioration of the water quality. For example, by capitalising on opportunities opened up by such changes, such as switching to saline crops. Or by raising awareness of risks to encourage changes in human behaviour, such as communicating on blue-green algae at non-official swimming locations, to prevent people from going for a swim there.

Below the indicators, the table distinguishes between effect-oriented and source-oriented measures:

• The effect-oriented measures are intended to mitigate the effects of climate change. Such effects affect an indicator as a whole.
• The source-oriented measures are intended to remove the source of negative effects. These measures affect specific control variables.

For example, “Clearing away blue-green algae” targets the effect of directly improving the indicator of nutriment content and does not address any of the sources of excessive blue-green algae growth. “Leaves removal from riverbanks”, on the other hand, addresses a source of excessively high nutriment content in surface water. That is why the box indicating the Leaf Fall control variable in the table is coloured green and marked with an A, as the measure will reduce leaf fall.