This book encompasses updated information as well as future directions for researchers working in the fields of environmental science, water resource engineering, and agricultural science. Navigating the Nexus: Hydrology, Agriculture, Pollution, and Climate Change focuses on the thematic areas of water resource, agriculture, and environmental domains. This book covers advances in modelling approaches, including Machine Learning (ML)/Artificial Intelligence (AI) applications; GIS and remote sensing; and sensors; to provide hydrological, agricultural, and environmental solutions during the ongoing climate crisis.

Gives advanced knowledge of hydrology of the headwater catchments from different climatic regions around the world Highlights on ongoing issues and advanced remediation techniques of soil-water pollution Provides application of engineering principles and economic and regulatory constraints to determine an action strategy

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Dr. Aliva Nanda is currently working as an Assistant Professor in the School of Civil and Environmental Engineering, Indian Institute of Technology Mandi, India. She had three years of research experience at Sierra Nevada Research Institute, University of California, Merced, USA. Her research expertise includes understanding runoff generation mechanisms, pathways, and thresholds at micro- to macro-scale and eco-hydrological processes of the forested mountainous catchments. She also works in the research domain of disturbance hydrology and eco-hydrological processes. Dr. Nanda has a Ph.D. in Hydrology from the Indian Institute of Technology Roorkee, India. During her Ph.D., she has done extensive field studies to understand the hydrological processes of the Himalayan landscapes. Her master's and bachelor's degrees are in Irrigation and Drainage Engineering and Agricultural Engineering, respectively. She also received the University Gold Medal and Governor's Award for her outstanding academic performance during her undergraduate and postgraduation studies. Besides these, Dr. Nanda bagged many accolades and travel fellowships, i.e., Lloyd V. Berkner Travel Fellowship, American Geophysical Union (AGU) student travel grant, Japan Geophysics Union (JpGU) student travel grant, AGU early-career travel grant, and many other academic awards till date. She has an amazing publication record with papers in highly reputed high-impact international journals and international conferences.

Dr. Pankaj K. Gupta is a Ramanujan fellow, upholding one of the honored scientific positions at the Indian Institute of Technology (I.I.T.) Delhi, India. As a Ramanujan fellow, he has undertaken an exceptional project "Engineered Microbiome (E-Microbiome)", a unique combination of microbiology, hydrogeology, and chemical sciences for restoration of polluted sites, funded by the Anusandhan National Research Foundation (ANRF), Govt. of India. He is also an adjunct assistant professor at the University of Waterloo, Canada. After having completed his Ph.D. from IIT Roorkee, he has been a Postdoctoral fellow at the University of Waterloo, Canada. He is the co-founder of the Society of Young Agriculture and Hydrology Scholars of India (SYAHI) and is also an editorial member of Frontiers in Water Journal, Biochar, and Carbon research. etc. He has also edited several books entitled "Decontamination of Subsurface Water Resources System using Contemporary Technologies (Elsevier)", "Agri-Tech Approaches for Nutrients and Irrigation Water Management (CRC Press)", "Integrated Waste Management Trends, Policies, and Perspectives (CRC Press)", "Soil-Water, Agriculture, and Climate Change: Exploring Linkages (Springer)", "Advances in remediation techniques for polluted soils and groundwater (Elsevier)", "Fate and transport of subsurface pollutants" (Springer). Dr. Gupta holds his in-depth experience of incorporating novel technologies to map soil-water systems of 30+ sites in India. Dr. Gupta is passionate about interdisciplinary research and teaching to understand multi-scale interactions between different components of the subsurface environment, especially the soil- groundwater-pollutant-microbes system.

Dr. Vivek Gupta is an Assistant Professor at the School of Civil and Environmental Engineering at the Indian Institute of Technology Mandi in Himachal Pradesh, India. Before joining IIT Mandi, he was a Postdoctoral Scholar at the University of California Merced in the USA and a researcher at the International Water Management Institute in New Delhi, India. Dr. Gupta holds a Ph.D. in Hydrology from IIT Roorkee and an M.Tech. in Civil Engineering with a specialization in Water Resources Engineering and Management from IIT Guwahati. He has published over 30 research articles, including 16 international peer-reviewed journal articles in highly respected journals, three book chapters and one edited book. His research interests include climate

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Section I. Hydrology of the headwater catchments in changing climatic conditions.- Chapter 1. Shift in streamflow regime in headwater catchments causes and impacts.- Chapter 2. Hydrology of the Upper Indus Basin under changing climate.- Chapter 3. The Open Global Glacier Model (OGGM) based assessment of Glacier Mass Variations in Chhota Shigri Glacier, Western Indian Himalaya.- Chapter 4. Insight into the Impact of Land Use/Land Cover Change on the runoff incorporating hydrological modelling to analyse their impact on the water regime.- Section 2. Efficient irrigation and agricultural planning for food security.- Chapter 5. Divulging insights into irrigation scheduling of Allium Cepa (Onion) using Cocos Nucifera (Coconut) husk mulch.- Chapter 6. Impact of Climatic Extreme Indices on Crop Productivity.- Chapter 7. Pathways to accelerate agricultural production system technologies in India: A vision for new generation watersheds.- Chapter 8. Analyzing the Impact of Climate Change on Crop Yield and Its Consequences for the Water-Energy-Food Nexus in an Indian River Basin.- Section 3. Hydro-chemical environment under climate change.- Chapter 9. Impacts of modern agricultural practices on soil-water pollution: An overview.- Chapter 10. Engineered bioremediation for decontamination of aquifers.- Chapter 11. Groundwater remediation using Meshless Local Petrov Galerkin (MLPG) simulation coupled with Differential Evolution (DE).- Chapter 12. Transport of Nitrate, Phosphate and Potassium in Vadoze zone with Varying Rainfall Scenarios for a Semi-Arid Cotton Growing Region of South India.- Chapter 13. Evaluation of potentially toxic heavy metal 3 contamination of groundwater and associated health risk assessment of inhabitants in the industrial corridors of integrated Vellore district, Tamil Nadu, India.- Section 4. Advanced tools and techniques to provide climate solutions.- Chapter 14. Assessing the Impacts of Climate Change on Hydroclimatic Regimes in Beas River Basin.- Chapter 15. Precision Agriculture Technologies for Climate-Resiliency and Water Resource Management.- Chapter 16. Hydrometeorological Water Budget and It's Relationship with Extreme Over Alaknanda River Basin: An Application of ERA5-Land.- Chapter 17. Bayesian model averaging for multi-model ensemble streamflows of the Godavari basin.- Section 5. Socio-hydrological Impacts and Policy Implications in a Changing Climate.- Chater 18. Application of AI/ML in Water Resource Management to Resolve Transboundary Water Conflict.- Chapter 19. Small-scale irrigation for climate adaptation: community and shared-based approaches in South Asia and sub-Saharan Africa.- Chapter 20. A hydrologic modeling assessment of future water scarcity in the Baitarani River Basin.- Chapter 21. Summary Chapter.