Network Model for Sustainable and/or Resilient Integrated Stormwater Management of a Water Sensitive City—A Case Study

Management of stormwater in urban areas have become a challenge due to continuous increase of imperviousness for various requirements, climate change, removal of plantation, constant decay of existing stormwater infrastructure. A few of the challenges which impact stormwater management are in regard to water quantity, quality and change of climate. Sustainable Urban Drainage Systems (SUDS), Low Impact Development (LID), Best Management Practices (BMP), Water Sensitive Urban Design (WSUD) and Sponge City Programme are various efficient stormwater management practices in the world. In the present study, proposed Amaravati city of Andhra Pradesh, India is considered which is envisioned to be the pioneer Smart City of India and to perform as Water Sensitive City as well. This study aimed to develop an efficient stormwater network system by developing a network model using StormCAD software for the proposed Amaravati city. A stormwater network model is build up to carry a discharge of 23 m³/s including climate change effect and any unanticipated future flows adopting the guidelines and recommendations of CPHEEO manual. Amaravati stormwater network system is designed as an underground gravity system with conduit as most efficient and economical rectangular box section with dimensions as 3.8 m × 2.5 m (rise). Various innovative and efficient stormwater management practices and/or measures are proposed as part of network development. The results obtained are used for further study on developing efficient, sustainable and/or resilient integrated stormwater management system for the study area i.e. proposed Amaravati city to perform as a Water Sensitive City for longer duration.