Category: Green-Blue
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Wet Retention Pond
Wet retention ponds are pools that continuously hold water and are designed with additional storage capacity to store surface runoff during heavy rainfall events. They release the stormwater at a controlled rate and improve water quality through downstream infiltration. The ponds can be integrated into public recreation areas. Benefits (+) Regulates heavy rain.(+) Multifunctional use…
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Reprofiling River Channel Cross Section
Reprofiling of the river channel cross-section towards a wider and more natural profile including shallow and deep waters and fast and slow flowing areas. Benefits (+) Allows sedimentation accumulation and prevent erosion of the riverbank.(+) Discharge capacity of floodwater could be increased.(+) Reduce the flood risk. Limitations (-) Conflict with the neighboring population interests where…
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Renaturation / Revegatation of Water Courses
The NbS focuses on the de-culverting of covered watercourses by the removal of concrete layers as culverting watercourses lead to the degradation of habitats and increases water pollution. This process can be combined with a re-naturalisation of the channel by opening and allowing natural development of riverbed. Benefits (+) Create more space and increased storage…
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Re-meandering of Rivers
Re-meandering the restoration of original curves of the river course by creating new meanders and reconnecting old cut-off ones. Re-meandering aims at reducing the water flow and increasing the length of the river leading to increased water storage capacity. Benefits (+) Slowing the velocity of the river(+) Erosion reduction(+) Aesthetical value Limitations (-) Heavy engineering…
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Living Weirs
Living weirs are created by constructing a bamboo grid across a river and filling it with sandbags that contain natural materials like sand, coconut coir, and manure. Various trees and plants are planted along the riverbanks to stabilize the soil, with banyan trees specifically planted on either side of the weir. Over time, these banyan…
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Living Revetmens with Cuttings
Living weirs are created by constructing a bamboo grid across a river and filling it with sandbags that contain natural materials like sand, coconut coir, and manure. Various trees and plants are planted along the riverbanks to stabilize the soil, with banyan trees specifically planted on either side of the weir. Over time, these banyan…
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Living Fascine
Fascines are tubular bundles of brunches and twigs that are installed in trenches along hillsides or riverbanks for stabilization Benefits (+) Waterside reinforcement (+) Protect hillsides and riverbanks from erosion (+) biodiversity Benefits by habitat creation Limitations (-) The stability of the hillside is hard to determine/foresee Assessment
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Floodplain Expansion
Expansion of the river floodplain area to temporarily increase the water storage capacity and increase infiltration to reduce the risk of river flooding. The expansion process could be through dechannelize the river in order to increase the floodplain which are the area on both sides of the river. Benefits (+) Provide additional flood space which…
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Floating Garden
Floating gardens typically consist of rafts that enable certain plants to be grown hydroponically, with their roots extending into the water. These gardens can be used for growing vegetables, for decorative purposes, or both. Benefits (+) Habitats provision for marine and terrestrial species(+) Considered as habitats linkage across urban boundaries (connective features)(+) Climate change mitigation…
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Electro Wetlands
An electro-wetland is a natural system for treating wastewater that produces electricity through the oxidation of organic matter. It is built upon a standard Horizontal Subsurface Flow Constructed Wetland (HSSF CW) with the addition of electrodes. (Cathodes and Anodes). Benefits (+) Electricity generation(+) Water temperature control and provision.(+) Water Quality Improvement.(+) Flood control/mitigation(+) Habitat for…