Wetlands are important ecosystems which provide habitat for a diverse range of flora and fauna, as well as serving a valuable role in flood control and adapting to climate change. They are also valuable for amenity.
Moore Environment has extensive experience of wetland design as an input to a sustainable drainage system or as habitat creation.
Sustainable drainage ponds are designed to contain storm run-off and release it slowly at a greenfield rate to avoid flooding. They also remove pollutants, a first pond trapping coarse sediments and floating oils, a larger second pond enabling finer particles to settle out. The ponds are designed to a natural profile and reeds planted in the shallow margins provide a further filter, an attractive habitat for wildlife and visual amenity. The pollution and attenuation functions always remain the priority however.
For habitat diversity ponds are carefully profiled to provide a range of micro-habitats. As a general rule the use of low nutrient soils, to discourage the dominance of rank vegetation and the use of true local provenance stock for new planting is recommended. These measures will maximise establishment of species and minimise management to achieve objectives.
Detailed design is aimed at site specific objectives, which may include suitability for particular species, and may contribute to a wider pond system or conservation strategy.