Suggest measures to improve water storage and irrigation system to make its judicious use under depleting scenario. (UPSC 2020, 15 Marks, )

Introduction

Water scarcity is a pressing issue in many regions around the world, and it is crucial to implement measures that improve water storage and irrigation systems to ensure its judicious use. With depleting water resources, it becomes imperative to adopt sustainable practices that can help mitigate the effects of water scarcity.

Explanation

Measures to Improve Water Storage and Irrigation System

A. Rainwater Harvesting

  • Collection of rainwater for reuse in agriculture and domestic needs.
  • Example: Rooftop rainwater harvesting is widely practiced in rural India.

B. Check Dams and Percolation Tanks

  • Building small check dams to store water and percolate into the ground for recharging groundwater levels.
  • Example: Gujarat has seen the successful implementation of check dams, improving groundwater levels in drought-prone areas.

C. Modernizing Irrigation Techniques

  • Drip Irrigation: Reduces water wastage by delivering water directly to plant roots.
  • Sprinkler Irrigation: Efficient for water-scarce regions by distributing water uniformly.
  • Example: Widespread adoption in Maharashtra and Tamil Nadu to save water in agriculture.

D. Groundwater Recharge Techniques

  • Methods such as building recharge pits, trenches, and spreading basins to replenish groundwater reserves.
  • Example: Watershed development programs in Rajasthan to increase groundwater availability.

E. Desalination Plants

  • Converting seawater into usable water to meet irrigation demands in coastal regions.
  • Example: The desalination plant in Chennai, Tamil Nadu, is supplying water for both domestic and agricultural purposes.

Judicious Use of Water Under Depleting Scenario

A. Crop Diversification

  • Shifting from water-intensive crops (like paddy and sugarcane) to less water-dependent crops.
  • Example: Farmers in Haryana are incentivized to grow pulses and oilseeds instead of rice.

B. Watershed Management

  • Integrated management of water resources to conserve water and prevent soil erosion.
  • Example: Watershed programs in Bundelkhand region have reduced water depletion and improved water availability.

C. Use of Technology in Water Management

  • Smart Irrigation Systems: Automated irrigation using sensors to optimize water use.
  • GIS and Remote Sensing: Helps track water availability and optimize its use for irrigation.
  • Example: Israel has pioneered the use of smart irrigation in agriculture, optimizing water usage in a semi-arid environment.

D. Public Awareness and Farmer Training

  • Educating farmers and the public about water conservation techniques.
  • Example: “Jal Shakti Abhiyan” launched by the Government of India to promote water conservation.

E. Government Policies and Regulations

  • Water Pricing: Introducing differential pricing for water usage to reduce wastage.
  • Example: Pricing mechanisms in Punjab have encouraged farmers to reduce water consumption for paddy cultivation.

Conclusion

Improving water storage and irrigation systems is crucial in the face of depleting water resources. By implementing the suggested measures, we can ensure the judicious use of water, mitigate water scarcity, and promote sustainable development in the long run. It is essential for governments, communities, and individuals to work together to address this pressing issue and secure a sustainable water future.