Want to help the environment Here’s an affordable, easy, and devastatingly effective approach

Rita McGrath

Want to help the environment? Here’s an affordable, easy, and devastatingly effective approach Thought Sparks

Introduction

When it comes to challenges like climate change, it can feel overwhelming. After all, how much of an impact can any individual have on such a massive problem? Imagine my delight at finding out about an initiative which is already having a dramatic effect on global groundwater restoration.

The Global Groundwater Crisis According to the United Nations, climate change is, at its core, a crisis of water. As they say, “From unpredictable rainfall patterns to shrinking ice sheets, rising sea levels, floods and droughts – most impacts of climate change come down to water water (UN Water). Climate change is exacerbating both water scarcity and waterrelated hazards (such as floods and droughts), as rising temperatures disrupt precipitation patterns and the entire water cycle (UNICEF).”

India's Groundwater Challenge India is the world's largest user of groundwater, extracting over 25% of the world's scarce groundwater resources. This has led to severe water scarcity, which has caused poor crop yields, soil degradation, reduced farmer incomes, farmer suicides, and mass migration out of villages. One recent report found that “almost two-thirds - 63 percent - of India’s districts are threatened by falling groundwater levels. In many cases, this water is becoming contaminated. Worryingly, poverty rates are 9-10 percent higher in districts where groundwater tables have fallen below 8 meters, leaving small farmers particularly vulnerable. If current trends persist, at least 25 percent of India’s agriculture will be at risk.”

The JalTara Vision I met Manu Namboodiri, the founder behind JalTara at the Princeton Innovation Forum on September 29.

JalTara is Save Groundwater Foundation's vision for nation-scale groundwater recharge and flood prevention. Their India goal is to address the groundwater crisis in 100,000 drought-hit villages within five years. This project will recharge an estimated 30 trillion liters of groundwater annually, which is about 60% of India's annual groundwater deficit. You can read more of his writings here on Medium.

The JalTara Approach - "One recharge pit per acre"

As Namboodiri explains, “Scale is the real problem to solve if we have to execute nation-wide solutions within a short time. JalTara's approach is to dig small recharge pits (~6 feet deep and 4 feet across) at the lowest point in every arable acre – with an average of ~500 pits per village. This creates a “sponge-like” effect over a large area, enabling rainwater to bypass dense top layers of soil and percolate down to recharge our depleted underground aquifers.

Project Validation and Benefits Over the last three years, Jaltara has validated its approach across 92 droughthit villages - digging roughly 45,000 recharge pits. These projects have demonstrated significant economic, social, and environmental benefits:

Water tables have improved YoY by 14 feet on average Farmer incomes have increased by over 120% - reducing rural poverty Crop yields have improved by over 42% Agricultural land usage during Rabi (second) season has gone up by 58% Labour requirements increased during Rabi by 88% - reducing forced migration Crop spoilage due to waterlogged fields has been virtually eliminated - thus reducing unexpected crop losses

Next Steps - 2024 Plan and Beyond Jaltara’s plan for next year is to scale the JalTara project to 1000 villages and dig 500,000 recharge pits. This will improve the lives of an estimated 1.5 million villagers while increasing water capacity by an estimated 300 billion liters. Our estimated budget for this is $6M - or about $12/recharge pit.

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