The Water Data Podcast

How should we understand groundwater in a warming world? Why has groundwater become the climate resilience resource for millions of people and what do we now know about how fast recharge can occur? What does new data tell us about the future of groundwater across Africa and Asia? And how can communities and governments manage groundwater without falling into the trap of over-extraction?

In this episode, host Veena Srinivasan speaks with Richard Taylor who has spent decades studying groundwater systems across East Africa, West Africa, South Asia, and the UK, and has helped reshape how scientists understand recharge, resilience, and climate impacts underground.

Professor Richard G. Taylor, a leading global expert on groundwater and climate change from University College London (UCL) joins host Veena Srinivasan on Season 2, Episode 8 of the Water Data Podcast. 

Richard has spent decades studying groundwater systems across East Africa, West Africa, South Asia, and the UK, and has helped reshape how scientists understand recharge, resilience, and climate impacts underground.

In this episode, they discuss why groundwater is our largest and most crucial distributed store of freshwater and serves as a critical buffer against climate change. They explore how a warming world leads to fewer but heavier rainfalls, and what this means for increasing groundwater recharge, especially in the tropics. 

Professor Taylor further explains the science behind rapid recharge, a concept derived from his work in East and West Africa, where water travels through "macropores" to reach deep aquifers in just hours or days. They also touch upon the "Sahelian paradox," a curious case in places like Niger where groundwater levels are rising due to changes in land use.

The Water Data Podcast is a talk show on the science, systems, and stories of water hosted by Veena Srinivasan. 

For all references and further readings related to the episode, visit https://welllabs.org/wdp-richard-taylor/

Subscribe to The Water Data Podcast on your favourite podcast app – and catch video episodes on the WELL Labs YouTube channel @welllabs.

Subscription links: Youtube, Apple Podcasts, Spotify, YouTube Music, Amazon Music, Audible, Castbox, and wherever you get your podcasts! 

Recording by Nabina Chakraborty and Nanditha Gogate. Video editing by Nabina Chakraborty. Graphics and artwork by Aparna Nambiar. Audio mixing and mastering by Vijay Doiphode. Podcast production and management by Nabina Chakraborty and Pavan Srinath.

How do we balance the science of water flows with the spiritual and social lives that rivers sustain? What does it mean to define “environmental flows” in a country where rivers are sacred? How can data, stories, and citizen science come together to restore river health?

In this episode, host Veena Srinivasan and guest co-host Nirat Bhatnagar of Dalberg Advisors are joined by two remarkable guests: Dr. Sejal Worah, Programme Director at WWF India, and Dr. Kate Brauman, Lead Scientist at the Global Water Security Center, University of Alabama.

Together, they explore the evolution of environmental flows, the quantity, timing, and quality of water flows needed to sustain ecosystems and human well-being. Dr. Worah reflects on WWF India’s 18-year journey from pioneering environmental flow assessments in the Ganga to mobilizing citizen scientists through “Ganga Mitras” to monitor river health. Dr. Brauman, meanwhile, shares insights from Latin America and the U.S. on how data and narrative intersect - how communities, governments, and ecosystems co-create meaning around water.

The conversation ranges from the challenges of gathering hydrological data in India to the cultural significance of the Ganga, from payments for ecosystem services in South America to inefficiencies in canal systems in India. Both guests share how values, relationships, and adaptive management are as critical as data itself in governing water.

For all references and further readings related to the episode, visit https://welllabs.org/wdp-brauman-worah/

Subscribe to The Water Data Podcast on your favourite podcast app - and catch video episodes on the WELL Labs YouTube channel @welllabs.

Subscription links: Youtube, Apple Podcasts, Spotify, YouTube Music, Amazon Music, Castbox, and wherever you get your podcasts! 

Recording by Dalberg. Audio mixing and mastering by Vijay Doiphode. Podcast production and management by Nabina Chakraborty and Pavan Srinath.

Nitrogen has been feeding billions, but it is now overloading our soils, waters, and air. Why is the fertilizer that fuels our food supply also creating a massive pollution problem? How do India's large fertilizer subsidies fit into this, and what are the long-term health risks of "legacy nitrogen" already in our groundwater?

Esha Zaveri, Senior Economist at the World Bank joins host Veena Srinivasan on Season 2, Episode 7 of the Water Data Podcast.

Esha Zaveri is trained as an environmental economist. Her core work addresses issues at the intersection of environmental health, agricultural impacts, water resources, climate change, and development policy, spanning  global to region- and country-level assessments in Asia, Africa, Latin America, and the Middle East.  

In this episode, Esha and Veena zoom into India’s use of urea for agriculture, large fertilizer subsidies, low nitrogen use efficiency, groundwater exposure, and the challenge of legacy nitrogen that slows water-quality recovery. Further Esha also lays out how to cut pollution without cutting yields.

Esha explains why only a fraction of fertilizer reaches crops, why the rest leaks into groundwater and coasts, the health risks (from methemoglobinemia or blue baby syndrome to emerging low-level exposure links), and the policy levers that work—precision agronomy, enhanced-efficiency fertilizers, extension services, and redirecting subsidies to support farmer transitions.

The Water Data Podcast is a talk show on the science, systems, and stories of water hosted by Veena Srinivasan. 

For all references and further readings related to the episode, visit https://welllabs.org/wdp-eshazaveri/ 

Subscribe to The Water Data Podcast on your favourite podcast app – and catch video episodes on the WELL Labs YouTube channel @welllabs.

Subscription links: Youtube, Apple Podcasts, Spotify, YouTube Music, Amazon Music, Audible, Castbox, and wherever you get your podcasts! 

Recording by Nabina Chakraborty and Ritik Pathak. Video editing by Nabina Chakraborty. Graphics and artwork by Aparna Nambiar. Audio mixing and mastering by Vijay Doiphode. Podcast production and management by Nabina Chakraborty and Pavan Srinath.

What makes the Indo-Gangetic Basin one of the most important aquifers in the world? How do stable isotopes, CFCs, and even traces of pharmaceuticals help us understand where groundwater comes from and how old it is? Can satellites like GRACE and InSAR give us new insights into groundwater depletion and recharge in South Asia?

Alan M. MacDonald, Head of Groundwater at the British Geological Survey, joins host Veena Srinivasan on Season 2, Episode 6 of the Water Data Podcast.

Alan is a hydrogeologist with over 30 years of research experience in Africa and South Asia, and has published widely on groundwater, climate change, and aquifer systems 

In this episode, Alan and Veena dive deep into the Indo-Gangetic Basin, exploring how its young sediments and complex geology shape groundwater availability, why salinity and depletion can exist side by side, and how historical canal records still influence water levels today.

Alan explains how tracer studies and isotope hydrology reveal the origins of groundwater, and how modern tools like satellites are transforming our understanding of recharge, depletion, and salinity.

The Water Data Podcast is a talk show on the science, systems, and stories of water hosted by Veena Srinivasan. 

For all references and further readings related to the episode, visit https://welllabs.org/wdp-alanmacdonald/ 

Subscribe to The Water Data Podcast on your favourite podcast app – and catch video episodes on the WELL Labs YouTube channel @welllabs.

Subscription links: Youtube, Apple Podcasts, Spotify, YouTube Music, Amazon Music, Audible, Castbox, and wherever you get your podcasts! 

Recording by Nabina Chakraborty and Nanditha Gogate. Video editing by Vraj Acharya. Graphics and artwork by Aparna Nambiar. Audio mixing and mastering by Vijay Doiphode. Podcast production and management by Nabina Chakraborty and Pavan Srinath.

Professor Murugesu Sivapalan shares how the field of hydrology has evolved over the past few decades, on Season 2, Episode 5 of the Water Data Podcast.

Prof Murugesu Sivapalan is the Chester and Helen Siess Endowed Professor in Civil and Environmental Engineering at the University of Illinois at Urbana-Champaign. Dr Sivapalan is an award-winning academic and was founding chair of the International Association of Hydrological Sciences (IAHS) Decade on Predictions in Ungauged Basins (PUB) initiative. His work on Predictions in Ungauged Basins as well as in socio-hydrology have shaped the discipline of hydrology as we know it today. 

Host Veena Srinivasan talks to Dr Sivapalan about his rich career of starting out with hydrological modeling, and early explorations into collecting and analysing hydrological data to infer how complex catchment and river basin systems functioned. 

Hydrology is the science of the movement, distribution and management of water. Dr Sivapalan walks us through how the ‘Predictions in Ungauged Basins’ decade pushed people to better understand the physical processes around the hydrological cycle, beyond statistical analyses and calibrated models. He shares how catchments co-evolved with the biology they sustained, and how they shaped each other. 

Dr Sivapalan goes on to talk about socio-hydrology, and how human activities also shape river basins and water systems, and vice versa. He explores how it is impossible to understand water systems today without paying close attention to human behaviour and human actions.

The Water Data Podcast is a talk show on the science, systems, and stories of water hosted by Veena Srinivasan. 

For all references and further readings related to the episode, visit https://welllabs.org/wdp-sivapalan/ 

Subscribe to The Water Data Podcast on your favourite podcast app - and catch video episodes on the WELL Labs YouTube channel @welllabs.

Subscription links: Youtube, Apple Podcasts, Spotify, YouTube Music, Amazon Music, Audible, Castbox, and wherever you get your podcasts! 

Recording by Nabina Chakraborty. Video editing by Nabina Chakraborty. Graphics and artwork by Aparna Nambiar. Audio mixing and mastering by Vijay Doiphode. Podcast production and management by Nabina Chakraborty and Pavan Srinath.

Host Veena Srinivasan sits down with Dr. Tom Gleeson, renowned hydrologist and Professor at the University of Victoria, Canada. 

Dr. Tom Gleeson shares his journey from a small-town experience with groundwater contamination to becoming a global leader in groundwater research. The conversation explores Tom’s early fieldwork in fractured rock aquifers, the challenges of modeling groundwater systems, and his pivotal role in developing global groundwater sustainability frameworks. Tom and Veena discuss the importance of context in water management and the need for both local and global perspectives.

This is Season 2, Episode 4 of the Water Data Podcast, a talk show on the science, systems, and stories of water hosted by Veena Srinivasan. Veena Srinivasan is an award-winning socio-hydrologist as well as the founder and Executive Director of WELL Labs, a water systems research and innovation centre based in Bengaluru, India.

Dr Gleeson also delves into his recent work on community-based watershed monitoring and the power of citizen science, highlighting innovative projects that blend science, policy, and indigenous data governance. The episode concludes with a thought-provoking discussion on integrating art and emotion into science communication, emphasising that real change comes from engaging both the mind and the heart.

Subscribe to the Water Data Podcast for more conversations at the intersection of data, science, and society!

For all references and further readings related to the episode, visit https://welllabs.org/wdp-gleeson/ 

Subscribe to The Water Data Podcast on your favourite podcast app - and catch video episodes on the WELL Labs YouTube channel @welllabs.

Subscription links: Youtube, Apple Podcasts, Spotify, YouTube Music, Amazon Music, Castbox, and wherever you get your podcasts! 

Recording by Nabina Chakraborty. Video editing by Nabina Chakraborty. Graphics and artwork by Aparna Nambiar. Audio mixing and mastering by Vijay Doiphode. Podcast production and management by Nabina Chakraborty and Pavan Srinath.

How and why does flooding take place? How are flood risks evolving with climate change and large-scale human alteration of riverscapes and watersheds? Does it even make sense to measure a ‘100-year-flood’ any more?

Stockholm Water Prize 2025 winner Dr Guenter Bloeschl shares a masterclass on the science and management of floods on the third episode of Season 2 of the Water Data Podcast. The Water Data Podcast is a talk show on the science, systems, and stories of water hosted by Veena Srinivasan. 

Professor Guenter Bloeschl is a hydrologist, engineer and academic from Austria. Dr Bloeschl is Head of the Institute of Hydraulic Engineering and Water Resources Management, Director of the Centre for Water Resource Systems of the Vienna University of Technology as well as Chair of the Vienna Doctoral Programme on Water Resource Systems.

He is also the 2025 recipient of the Stockholm Water Prize, awarded by the Swedish Academy of Sciences and the Stockholm Water Foundation. One of the highest honours in the water sciences, Dr Bloeschl received it for his extensive work on flood risk reduction, water resource management, flood scaling, and regional process hydrology. 

In this episode, Dr Bloeschl talks about the science of flooding, what research shows about the evolving causes and impacts of floods in Europe, and flood mitigation and management lessons for India and the world.

For all references and further readings related to the episode, visit https://welllabs.org/wdp-bloeschl 

Subscribe to The Water Data Podcast on your favourite podcast app - and catch video episodes on the WELL Labs YouTube channel @welllabs.

Subscription links: Youtube, Apple Podcasts, Spotify, YouTube Music, Amazon Music, Audible, Castbox, and wherever you get your podcasts! 

Recording by Nabina Chakraborty. Video editing by Vraj Acharya. Graphics and artwork by Aparna Nambiar. Audio mixing and mastering by Vijay Doiphode. Podcast production and management by Nabina Chakraborty and Pavan Srinath.

Do farmers share and sell groundwater to each other informally? Can you price water for farmers? How does new technology get adopted in agriculture? Does solar irrigation make sense for India?

Dr Soumya Balasubramanya has a wide-ranging discussion with host Veena Srinivasan on the second episode of Season 2 of the Water Data Podcast.

Dr Soumya Balasubramanya is a senior economist with the World Bank, and previously a Senior Researcher in Environment and Development Economics at the International Water Management Institute-CGIAR. Soumya has worked extensively on analysing informal groundwater markets in South Asia, on irrigation and solar-powered irrigation, on pricing, and on evaluating water quality interventions in Arsenic-polluted waters.

This episode is co-hosted by Pavan Srinath, Managing Partner at WELL Labs.

For all references and further readings related to the episode, visit https://bit.ly/waterdatapod-sbala

Subscribe to The Water Data Podcast on your favourite podcast app - and catch video episodes on the WELL Labs YouTube channel @welllabs.

Subscription links: Youtube, Apple Podcasts, Spotify, YouTube Music, Amazon Music, Audible, Castbox, and wherever you get your podcasts! 

Recording by Pavan Srinath. Video editing by Nabina Chakraborty. Graphics and artwork by Aparna Nambiar. Audio mixing and mastering by Vijay Doiphode. Podcast production and management by Nabina Chakraborty and Pavan Srinath.

How do you develop a water policy for a state like Karnataka, and how do you implement it well? How can you bring the best of science, engineering and citizen engagement to water management in government? What does it mean to build a think tank within the government?

Dr Somasekhar Rao has a wide-ranging discussion with host Veena Srinivasan on the first episode of Season 2 of the Water Data Podcast.

Dr Somasekhar Rao is Director (Technical) of the Advanced Centre for Integrated Water Resources Management (ACIWRM), Government of Karnataka and helped the state government start the institution in 2015. Working with the Netherlands government and later with the Food and Agriculture Organisation, Dr Rao created and ran large-scale groundwater management programmes in Andhra Pradesh: APWELL and APFAGMS. He has also worked with the Asian Development Bank, and has spent the last 15 years modernising and reforming water management in Karnataka and mainstreaming river basin management and integrated water resources management in the state. He also helped the government bring in a new Karnataka State Water Policy 2022. The episode features an expansive conversation exploring all this and more. 

For all references and further readings related to the episode, visit https://bit.ly/waterdatapod-psrao

Subscribe to The Water Data Podcast on your favourite podcast app - and catch video episodes on the WELL Labs YouTube channel @welllabs.

Subscription links: Youtube, Apple Podcasts, Spotify, YouTube Music, Amazon Music, Castbox, and wherever you get your podcasts! 

Recording by Vraj Acharya, Ritik Pathak and Nabina Chakraborty. Video editing by Vraj Acharya and Nabina Chakraborty. Graphics and artwork by Aparna Nambiar. Audio mixing and mastering by Vijay Doiphode. Podcast production and management by Nabina Chakraborty and Pavan Srinath.

The Water Data Podcast is a talk show on the science, systems, and stories of water hosted by Veena Srinivasan. Every other Tuesday, sit down and listen to researchers, innovators, government officials and business leaders working on the forefront of water systems. 

New episodes out from June 22, 2025!

Veena Srinivasan is an award-winning socio-hydrologist as well as the founder and Executive Director of WELL Labs, a water systems research and innovation centre based in Bengaluru, India. 

The Water Data Podcast features discussions on what data and research tell us about water systems, about how climate change is affecting them and how human use of water is transforming the stock and flow of water across diverse landscapes and aquifers. The show focuses on how we can collectively manage water systems better.

Subscribe to The Water Data Podcast on your favourite podcast app - and catch video episodes on the WELL Labs YouTube channel @welllabs.

Recording by Vraj Acharya, Nanditha Gogate and Nabina Chakraborty. Video editing by Vraj Acharya. Graphics and artwork by Aparna Nambiar. Audio mixing and mastering by Vijay Doiphode. Podcast production and management by Nabina Chakraborty and Pavan Srinath.