Abstract
Abstract Economic growth of any nation like India depends on growth of cities. In India 31% of the total population exists in urban areas. The smart city mission of India was established with the objective to deliver the basic requirements of the citizens in a sustainable manner. Madurai city located at Peninsular India with a 1.4 million population was taken for this study. The objective was to develop an integrated urban water management strategy after analysing all the components of the urban water cycle such as rainfall, runoff, groundwater and wastewater. The population forecast for 2021 was carried out for the Local Planning Area of 726.34 km2 and the water demand was calculated as 109 Mm3/year. To meet the demand, runoff from the average rainfall was estimated as 393 Mm3/yr using the SCS-CN method. The storage capacity in the water bodies to store the surface water was estimated as 156 Mm3/yr and groundwater recharge potential was estimated as 22 Mm3/yr. The integrated urban water management strategy developed, shows that there is a huge potential for rainwater storage at the surface level and subsequent recharge through artificial recharge techniques.
Highlights
The rapid growth of population, urbanization, changes in living standards, increase in irrigated agriculture, and altering consumption patterns has increased water demand
Rainfall analysis was performed by adopting the Weibull method to find the 75% dependable rainfall using 10 years’ rainfall data collected from the Public Works Department (PWD), Madurai and overall average precipitation of the region was estimated using the Thiessen polygon method using Arc Geographical Information System (GIS) software version 9.2
A Land Use and Land Cover (LULC) map and Soil map required for runoff estimation were created using Arc GIS software version 9.2 with satellite images (Landsat, IRS-P6 of 2017 with 30 m resolution)
Summary
The rapid growth of population, urbanization, changes in living standards, increase in irrigated agriculture, and altering consumption patterns has increased water demand. Water management is gradually becoming a crisis faced by governments all over the world. The world population is expected to reach 9.1 billion in the year 2050 with 69% of.
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