The construction of a Flood Control Area with Controlled Reduced Tide can attribute to five of the six main pressures in the freshwater zone of the Scheldt. However, Lippenbroek is only a small scale pilot project (8 ha). The real effect of Lippenbroek to the Scheldt estuary is hence minimal. The main objective of Lippenbroek was also limited to the research aspect. Lessons learned from Lippenbroek are now used in the large scale project Kruibeke-Bazel-Rupelmonde (KBR).
Indicator |
code |
Main pressures freshwater zone Scheldt |
Effect? |
Description |
- - |
- |
0 |
+ |
++ |
S.I. |
1.1 |
Habitat loss and degradation during the last about 100 years: Intertidal |
|
|
|
|
X |
Restoration of intertidal ecosystems. |
S.I. |
1.5 |
Gross change of the hydrographic regime during the last about 100 years |
|
|
|
|
X |
At larger scale, a FCA-CRT can contribute to the hydrographic regime of the estuary (eg. water storage capacity and safety function) |
S.I. |
3.1/3.2 |
Decrease of water and sediment chemical quality |
|
|
|
|
X |
Nutrient processing and aeration in a CRT can improve water and sediment quality (at larger scale). |
D.I. |
1.3 |
Land claim during the last about 100 years |
|
|
|
|
X |
Land is given back to the estuary. |
D.I. |
1.7 |
Relative Sea Level Rise |
|
|
|
|
X |
A FCA-CRT can attribute to protect the adjacent area against sea level rise (at larger scale). |
D.I. |
2.4 |
Maintenance dredging |
|
|
X |
|
|
Sedimentation in the FCA-CRT could theoretically reduce the sediment load in the estuary, but the effect is very small and sedimentation in the FCA-CRT is limited to conserve the flood control function. Furthermore, the navigability in the estuary is not influenced by the FCA-CRT and with the ever larger ships maintenance dredging will be still crucial in the future. |