WFD CIS Guidance Documents -Gd 3 - impress -4. tools to assist the analysis of pressures and impacts -4.5 identification of tools: comparison of need with existence and examples -
- 4.5.1 tools for rivers
Table 4.4 Assessment of the degree of availability of tools needed for riverine water bodies
RIVERS |
WFD | Protected areas | ||||||
Tools categories : 1: Tools available and implemented 2:Tools available but not implemented 3: No available tool |
Physico-chemistry |
Flora |
Invertebrates |
Fish |
Drinking water, nitrate |
Bathing, recreation |
Habitats, Birds |
Remarks about methods and required data |
| Pressure quantification per pressure group |
||||||||
POLLUTIONS |
||||||||
| Nutrients |
1 |
2 |
2 |
2 |
1 |
1 |
NA |
Moneris, Nopolu, Eurowaternet |
| General conditions |
1 |
2 |
2 |
1 |
1 |
1 |
1 | |
| Toxics |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
Only partial assessments |
Pathogens |
NA |
NA |
NA |
NA |
2 |
2 |
NA |
|
WATER REGIME |
||||||||
| Abstractions, derivation, storage |
2 |
3 |
3 |
2 |
NA |
NA |
3 |
Tools do not encompass all uses |
| Change in flood regime |
NA |
2 |
2 |
2 |
NA |
NA |
2 |
Many indicators, no overall procedure nor local reference data |
| Change in low water regime |
2 |
3 |
2 |
2 |
NA |
NA |
2 |
Only relationships with chemistry are documented, otherwise local expertise required |
| Hard change in discharge |
2 |
3 |
2 |
2 |
3 |
3 |
2 |
Definitions to be formalised |
MORPHOLOGY |
||||||||
| Break in longitudinal course |
NA |
NA |
3 |
2 |
NA |
NA |
3 |
Indicators not available |
| Bed artificialisation |
3 |
3 |
3 |
3 |
NA |
NA |
3 |
"" |
| Maintenance, works in river bed |
3 |
3 |
3 |
3 |
NA |
3 |
3 |
"" |
| Change in river course |
NA |
3 |
3 |
2 |
Many tools are available, but unfortunately they focus on classical pollution that can be computed and modelled. Many developments are required for hydrological pressures. In this case, a common set of indicators could be defined, backed up by local identification of relevant threshold values. Morphology and biological pressures, that are not well understood, require developments to address ecological state assessment, including links with habitats and bird life in riparian areas. | |||
Tweet this
Print
