How landscape memory, hysteresis shape the way Indian cities flood

Indian urban areas frequently experience prolonged waterlogging following rainfall, a phenomenon often attributed to inadequate drainage systems. However, recent studies reveal that this issue is more complex and relates to hydrology, specifically the concepts of landscape memory and hydrological hysteresis. Landscape memory refers to the way geographical features retain the effects of past rainfall events, influencing how quickly they can absorb new precipitation. This means that urban landscapes do not react immediately to rainfall, and their ability to drain water is affected by previous weather patterns. Understanding these hydrological processes is crucial for developing effective flood management strategies in Indian cities, which are increasingly susceptible to flooding due to climate change and rapid urbanization. Addressing this issue requires an integrated approach that combines improvements in drainage infrastructure with a deeper understanding of the natural hydrological dynamics at play in urban environments.