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| 157. | For rivers classified as having high, good and moderate ecological status, the Water Framework Directive provides a detailed set of descriptions corresponding to several of the different status elements: — For the biological quality elements, there are descriptions of the following elements: phytoplankton; macrophytes and phytobenthos; benthic invertebrate fauna; and fish fauna; — For hydromorphological quality elements, there are descriptions of the following elements: hydrological regime; river continuity; morphological conditions; — For physico-chemical quality elements, there are descriptions of the following elements: general conditions; specific synthetic pollutants; specific non-synthetic pollutants.
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Source: EUR-Lex (Cellar) · retrieved 2026-09-25 · Text as adopted (Official Journal); later amendments are not incorporated in this text.