Dhwani Chawla

UI4001

Stormwater Sponges - Public Open Spaces

In earlier times, stormwater in the cities had natural pathways to eventually find its way to discharge points or underground. With the rapid urbanisation and development, stormwater has started appearing as a concern and hence requires management. Ahmedabad witnesses problems of waterlogging, flash floods, with minimal groundwater recharge every time it rains. The city assessment was an effort to understand the concerns in detail and there the very origin which is addressed through our study. 

Sponge open spaces package caters to the problem of waterlogging and simultaneous groundwater depletion by absorbing stormwater through the selected public open spaces of the city. This is done through the creation of a comprehensive mechanism that weaves through innovative institutional, technical, financial, policies and programs aspects for Ahmedabad city. The pilot demonstration is done for a brownfield and greenfield site.

Click on the link https://drive.google.com/drive/folders/1mvOE9s-fcG-fdahx0yHHZdMpivhVpSbM?usp=sharing to get an overview of the project.


Report Content

Overview of Stormwater Sector and About the Intervention

Concept of Sponge Open Spaces and Need for the Intervention

Assessing Stormwater and Associated Risks and Defining Public Open Spaces

Evolution and Guidelines

Runoff Coefficients and Site Selection

Analysis of Brownfield and Greenfield Sites

Envisioning the Pilot Sites

Six-layers Package, Costing and Phasing

Sponge Cities Mission - Financing and Implementation mechanism

Conclusion and Way Forward - Monitoring, Evaluation and Upscaling