India, due to its unique geography and geology, from the beginning of human civilization has been plagued with water scarcity. The monsoons provide the majority of fresh water resources for most of India’s population; however, this climatic phenomenon occurs over short periods of time, providing enough water for river systems to flow for about half the year. In comparison the northern Himalayan rivers are fed by the constant melting of glaciers from the Tibetan Plateau. These temporal and geographic differences in water distribution have led to the possibility of a national inter basin water transfer system. This project, known as the National River Linking Plan, would connect the Himalayan rivers with excess amounts of water to the peninsular rivers that cease to flow during the dry months. Projects like these are not uncommon around the globe. In the United States canals were built to divert water flow from the Colorado River to supply urban centers like Las Vegas and Los Angeles, but the Colorado has been impacted severely from this development decision and currently dries up nearly 100 miles from the border of Mexico. Despite sparking international conflict this has a major impact on the river’s ecosystem. Before moving forward on this 120 billion USD National River Linking Plan, major environmental assessments and societal assessments need to be conducted to ensure the project is worth the efforts and capital.
A case study of the project was conducted on a single link, the Godavari-Krishna link, to examine the effectiveness of the project intended goal of solving India’s water scarcity. This project is a part of the much larger National River Linking Plan that bears the 120 billion dollar price tag. The project links the Godavari River to the Krishna River through a proposed canal system through a ridge in between the two rivers. Though the rivers are geographically located, next to one another the watershed for the Godavari originates in the mountains while the Krishna River is located in a deficit basin. The entire National River Linking Plan is centered on the idea of taking water from surplus basins and transporting it to deficit basins. This makes sense in theory, but in the case study of the Godavari River and the Krishna River it might be a pipedream.
The case study used a series of models to look into the future and see what impacts the project would actually have on water scarcity. The author used what is known as a Water Evaluation and Planning Model to examine the current use of water in the Krishna and Godavari regions and the projected future use of the regions post basin linkage. What is interesting is that the usage in the Krishna region is primarily irrigation for agricultural purposes. Large irrigation projects in this fertile land are scheduled to continue to grow after the link is completed. Farmers currently in this region can only grow two rotations of crops per year because of the water scarcity in the dry seasons. With the increase in water supply farmers will be able to harvest one more crop every year. However, the model showed that those living in the once surplus basin of the Godavari River will experience water shortages during the drier parts of the year. This will possibly decrease crop yields for farmers that live within this region. Also the current model does not show any positive change in the ground water levels that are being over exploited in the Krishna region. The author concluded the study with the idea that the Godavari-Krishna project should be considered a deficit transfer rather than a water transfer because of negative impacts on water availability for farmers in the Godavari region.
The United States has already shown the world the negative impacts of inter basin transfers without proper planning and India is about to follow in our footsteps. Areas that are supplied with more water will use more water. Urban centers like Las Vegas have expanded as much as possible causing the water scarcity issue worse than it started. The case study of the Godavari-Krishna link shows that the same problems will arise with these new projects if they are not properly planned. One major impact that was not focused on in the article was the impact on local communities from a reservoir that would be a result of the project on the Godavari. Over 250 villages will be displaced with over 145,000 people being forced to give up their lands and move. This project on the whole seems to push the burden of water scarcity in the Krishna basin onto those living on the Godavari River. Hundreds of projects like this one make up the National River Linking Plan and need to be re-evaluated based on their effectiveness at relieve water scarcity and its impacts on social and environmental justice.
Bharati, L., Anad, B. K., & Smakhtin, V. (n.d.). Analysis of the inter-basin water transfer scheme in india: A case study of the godavari-krishna link