How best can the problems of floods and droughts be addressed so that the losses are minimal and the system becomes resilient? In this context, one important point that needs to be noted is that India gets 'too much' water (about 75% of annual precipitation) during 120 days (June to September) and 'too little' for the remaining 245 days. This skewed water availability has to be managed and regulated for its consumption throughout the year.

Correct Option (D)

The problem statement emphasizes India's skewed water availability, with concentrated precipitation during the monsoon season leading to floods, followed by scarcity for the remainder of the year. A practical, rational, and lasting solution must address both the management of excess water and the provision of year-round supply. Buffer stocking of water through dams provides essential surface storage capacity for flood control during peak rainfall events and ensures a regulated release for various uses such as irrigation, drinking water, and industrial supply during dry periods. Simultaneously, recharging aquifers replenishes groundwater reserves, which act as a natural, decentralized storage system. This approach enhances water security, mitigates drought impacts, and effectively manages the temporal disparity in water availability, thereby building resilience against both floods and droughts.

Incorrect Options:

Option (A) Constructing huge concrete storage tanks and canals across the country:

While offering storage potential, this approach presents significant practical challenges. The nationwide construction of such extensive concrete infrastructure would involve prohibitively high costs, substantial land acquisition issues, considerable environmental disruption, and intensive maintenance requirements. Its effectiveness in managing the vast volume of monsoon runoff and ensuring equitable distribution across diverse geographical regions is also a concern.

Option (B) Changing the cropping patterns and farming practices:

Modifying cropping patterns and adopting water-efficient farming practices (e.g., drought-resistant crops, micro-irrigation) are valuable demand-side strategies for water conservation and improved agricultural resilience. However, these measures primarily address water consumption efficiency rather than the fundamental challenge of managing large-scale temporal imbalances in water availability (i.e., storing monsoon surplus for dry periods) or directly mitigating flood events. It is a complementary measure rather than a comprehensive solution for the core problem outlined.

Option (C) Interlinking of rivers across the country:

River interlinking projects aim to transfer water from surplus river basins to deficit ones. While conceptually addressing regional water scarcity, such large-scale projects are characterized by immense complexities and controversies. These include significant environmental impacts (e.g., biodiversity loss, forest submergence), large-scale social displacement, substantial financial outlays, formidable technical challenges in implementation, and potential interstate water disputes. Given these multifaceted concerns, it is not considered the most practical, rational, or readily implementable lasting solution for the immediate and comprehensive management of floods and droughts across the nation.