SPONGE COLLABORATIVE +
WEAVING WITH WATER Team
MULLASSERY CANAL FRAMEWORK AND CANAL EDGE MASTERPLAN
Figure 36 - Section across AK Seshadri road illustrating how the components of Sponge Framework perform during 70% increase in Annual rainfall volume (Extreme Cloudburst event) (Image Credit: Sponge Collaborative)
Extreme Cloudburst Scenario with runoff overwhelming designed gray infrastructure capacities (~70% of Annual Rainfall Volume) During extreme rainfall events larger open spaces like playgrounds and plazas are needed to capture all the run-off from the larger catchment area and temporarily hold the water and delay the run-off. Thus preventing water clogging on adjacent streets and from burdening the existing stormwater pipes. These spaces are placed adjacent to other blue green infrastructure and are connected to main stormwater drains of the city. These large open spaces play a critical role in flood mitigation during storm events accompanied by high tide when the efficiency of the canal and stormwater drains is highly reduced. Thus once the storm reduces these central spaces safely convey the water into the drains thus reducing huge property damages during flash floods. 2.1.8 On-Site Implementation of Sponge toolkits
Figure 37 - Diagram illustrating sponge streets suitability matrix and variables involved in implementing the components of sponge street typology (Image Credit: Sponge Collaborative)
