2.1.9 Expected Outcomes

SPONGE COLLABORATIVE + WEAVING WITH WATER Team

MULLASSERY CANAL FRAMEWORK AND CANAL EDGE MASTERPLAN

requires detailed topographic understanding and geotechnical surveys. Soils with high infiltration rates are suitable for Bioinfiltration Basins while other typologies could be constructed on any soil type. Constructed Ponds, Wetlands, and Bioinfiltration Basins should maximize the complexity of flow paths from inlet points to outlet points. The creation of topographic and microtopographic variation is important to slow down water during cloudbursts and create diverse niches for different plant species. The planting design should reflect the hydrologic zones of the constructed design with soil stabilizing and salt tolerant species around the entry points, drought tolerant species on the upper (seasonally dry) zones, and flood tolerant species that can tolerate extended or permanent pooling in the lower areas. Since the spatial and planting design of all Sponge Open Spaces play a critical role in its importance as a public space or ecological amenity, their design requires the supervision by qualified professionals. Implementation budgets for these projects should account for the role of design in their success as multi-functional infrastructures

Figure 39 : Cross-sectoral Collaboration between multiple stakeholders with KMC as the foremost lead is necessary for a successful implementation of the sponge framework (Image Credit: Sponge Collaborative)

2.1.9 Expected Outcomes

1. Benchmarks to measure waterlogging 2. Ability of the system to withstand an exceedance rainfall event of 70% of rainfall capacity 3. Improved groundwater quality with frequent testing protocol 4. Reduction in budget for stormwater infrastructure in vicinity of Mullasserry Canal precinct over a 20 year period 5. Increase in number of community-led blue-green infrastructure projects