# The Water Framework Directive (Classification, Priority Substances and Shellfish Waters) Regulations (Northern Ireland) 2015, Paragraph 2


High Status morphological condition must not be assigned to
(a) Any water body that has been identified as being at risk of failing to achieve good ecological status due to the extent of morphological pressures; or
(b) Any artificial or heavily modified water body.
Table 1
Boundary values for the River Hydromorphology Assessment Technique
Ecological quality ratio
High
>=0.8
Good
0.6 - < 0.8
Moderate
0.4 - <0.6
Poor
0.2 - <0.4
Bad
<0.2

---
Source: https://www.legislation.gov.uk/nisr/2015/351/schedule/2/part/4/paragraph/2 (the official version)
Page: https://openlegislation.uk/water-framework-directive-classification-priority-substances-and-shellfish-waters-regulations-northern-ireland-2015/schedule-2/part-4/paragraph-2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.