Coherent Identifier About this item: 20.500.12592/dzwmns

CSE-NMCG Webinar - Stormwater Harvesting in Parks and Open Spaces: Experiences from India - Dhruv Pasricha, Deputy Programme Manager, Urban Water; dhruv.pasricha@cseindia.org

29 August 2022

Summary

• Why WSUDP and GI? • CSE’s research – Moving towards WSUDP and Green Infrastructure • WSUDP for Climate Resilience • Stormwater Harvesting in Parks and Open Spaces • Case studies: Delhi, Uttar Pradesh • Way forward Co-existence of Water Problems - Shortage & Abundance Urban Flooding Incidences & Status of Groundwater No city has 24x7 water supply Groundwater Exploitation, More recharge – 40 % Ind. [...] • Adding value to the social and ecological aspects of areas by planning and designing the built environment in accordance with community needs and water issues • Connecting the urban water cycle by collaborating with practitioners of different disciplines to bring different perspectives and expertise • Associating upcoming policies, regulations and approvals with WSUDP. [...] The standards and guidelines provide enough open area to design the SUDS structures Ratio of built-up to open area in different land uses Scope of interventions as per existing provisions Scope of interventions as per existing provisions Components of water-sensitive urban design and planning Multidisciplinary but also interdisciplinary Integration for Sustainable Urban Development. [...] Integration along levels of planning WSUDP integrates water cycle management with the built environment through planning and urban design, providing multiple benefits and opportunities in order to overcome challenges with water management Conventional Drainage Design • Storm drains on both sides of the road • Connected with cross drains across the road at suitable intervals having gratings to coll. [...] m.) 2,82,047 18,008 5,227 Scale Sub-City Community Neighbourhood Annual RWH 32,760 2,092 607 Potential (KL) • Swale • Swale • Trench with filter Recommended • Bio-retention Area • Swalestrips • Trench with Filter • Raingarden Structure(s) • Bio-retention Area Strips • Trench with Filter Strips • Detention Basin Lowest • Infiltration basins point in • Infiltration Basin the park Total Area of 3526.

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