Working on NWRM requires understanding of a broad range of key concepts. This page gathers definitions for a set of key concepts used when addressing NWRM. It sets a shared ontology, with interlinkages between concepts.

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A (4) | B (4) | C (3) | E (6) | F (4) | G (3) | H (2) | I (2) | L (6) | M (5) | N (4) | O (2) | P (2) | R (14) | S (8) | T (5) | U (2) | W (4)

The sloping side of any hollow in the ground, especially when bordering a river. (Source: CED)

Basins and ponds store surface run-off.ᅠ Detention basins are free from water in dry weather flow conditions but ponds (e.g., retention ponds, flood storage reservoirs, shallow impoundments) contain water in dry weather, and are designed to hold more when it rains.
- Based on Stella definitions, adapted by NWRM project experts and validated by the European Commission




A biophysical parameter is a measurable characteristic that can help in defining a particular system. It can cover individual substances, groups of substances or be defined by its measurement method like turbidity or the mesurement of oxygen consumption like BOD5 or COD. It is generally expressed by a value and its unit.


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