| Rating |
Importance
of ecological sites |
Importance
of fisheries waters |
| A
|
Internationally
important
Site qualifying for designation as proposed SAC or SPA,
therefore subject to the EU Habitats Directive
|
Internationally
important
Designated salmonid waters under the EU Freshwater Fish
Directive
|
| B |
Nationally
or regionally important
Site listed as proposed NHA or containing habitats which
are nationally or regionally rare |
Nationally
important
Other major salmonid waters
|
| C |
High
value, locally important
Sites containing semi-natural habitat types with high
biodiversity. High degree of naturalness. Locally rare
habitats or species |
High
value, locally important
Small streams with known salmonid populations. Larger
waters with some fisheries value |
| D |
Low
value, locally important
Artificial habitats which provide some secondary wildlife
habitat of local value |
Low
value, locally important
Small streams without known salmonid populations |
| E |
Very
low value
Modified sites or sites with very low habitat diversity
|
Very
low value
Polluted waterways with no current fisheries value |
| F |
Unknown
value
Sites of possible ecological value which require further
investigation at optimum season to establish importance
|
Unknown
value
Sites of possible fisheries value requiring further survey
|
