10 Ways Joel Tanui Is Advancing Climate-Resilient Irrigation in Kenya

 

Climate change has altered the rhythm of farming in Kenya. The rains no longer arrive with the predictability that generations of farmers once relied upon. Seasons have become shorter in some places, longer in others, and increasingly defined by extremes. One county struggles through prolonged drought while another grapples with destructive floods. The result is a growing realization that food security can no longer depend solely on rainfall.

Against this backdrop, irrigation has become more than an agricultural intervention. It is emerging as one of Kenya's most important climate adaptation strategies. At the centre of this shift is Mr Joel Tanui, the Irrigation Secretary responsible for Land Reclamation, Climate Resilience and Irrigation Water Management in the State Department for Irrigation. His portfolio places him at the intersection of water security, environmental restoration and sustainable agricultural development, three issues that increasingly determine Kenya's economic future.

Rather than viewing irrigation simply as a means of growing more crops, the current approach recognises it as a tool for restoring degraded landscapes, protecting livelihoods and building communities that can withstand climate shocks. That broader perspective is reflected in several initiatives currently shaping the country's irrigation agenda.

1. Linking Irrigation to Climate Resilience

For many years, irrigation in Kenya was largely discussed in terms of increasing agricultural production. Today, the conversation has shifted considerably. Climate resilience now occupies an equally important place in national planning, recognising that reliable water infrastructure enables communities to adapt to increasingly unpredictable weather patterns.

Mr Tanui's work reflects this transition. By integrating irrigation planning with climate adaptation strategies, the State Department is helping counties prepare for droughts before they become humanitarian crises rather than responding after crops have already failed. This represents a significant policy evolution that acknowledges climate change as a long-term development challenge rather than a seasonal emergency.

2. Turning Land Reclamation into National Policy

One of the most significant developments under Mr Tanui's docket has been the push to establish a comprehensive legal framework for land reclamation.

Kenya loses thousands of hectares of productive land every year through erosion, desertification and unsustainable land use. Restoring those landscapes requires more than engineering works. It requires coordinated policy, financing mechanisms and institutional responsibility.

The proposed Land Reclamation Bill, 2026, developed through the Land Reclamation Committee led by Mr Tanui, seeks to provide exactly that framework. The proposed legislation aims to support ecosystem restoration, strengthen climate resilience, improve food and water security, and establish mechanisms for financing land reclamation projects across the country. If enacted, it would provide Kenya with one of its most comprehensive legal instruments for reversing land degradation.

3. Treating Water Harvesting as Climate Infrastructure

Climate resilience begins long before the first drop of rain falls. It begins with the ability to capture, store and manage water when it is available.

This thinking increasingly informs irrigation planning within the State Department. Water harvesting structures, storage facilities and efficient distribution systems are becoming central components of long-term resilience planning, particularly in Kenya's arid and semi-arid counties.

Instead of allowing seasonal rainfall to flow away unused, these investments create reserves that sustain farming during dry periods. Beyond crop production, they support livestock, domestic water needs and local economic activities, reducing communities' vulnerability to recurring droughts.

4. Reclaiming Degraded Land for Productive Agriculture

Land degradation often appears irreversible. Gullies deepen, vegetation disappears and soils lose their fertility until entire landscapes seem beyond recovery.

Yet experience has shown that degraded land can become productive again when restoration is combined with reliable water management.

The State Department's land reclamation agenda recognises this relationship. Restoring degraded landscapes involves stabilising soils, improving vegetation cover, harvesting runoff and introducing irrigation systems capable of supporting sustainable agricultural production. This integrated approach transforms environmental restoration from a conservation exercise into an economic opportunity that improves livelihoods while strengthening climate resilience.

5. Promoting Irrigation Water Management Instead of Water Consumption

The conversation around irrigation is gradually moving beyond the construction of canals, dams and pipelines. The greater challenge now is ensuring that every drop of stored water delivers the highest possible value. That shift explains why irrigation water management has become a defining feature of Mr Joel Tanui's portfolio.

Kenya's climate is becoming more unpredictable, making water an increasingly strategic national resource. Efficient irrigation is therefore no longer optional; it is essential. Modern systems such as drip irrigation, sprinkler technologies and improved canal management reduce water losses while increasing agricultural productivity. They also make farming economically viable in regions where rainfall can no longer be relied upon.

This philosophy aligns with the State Department for Irrigation's broader objective of improving water-use efficiency while expanding irrigated agriculture. Rather than encouraging greater water extraction, the emphasis is increasingly on managing existing resources more intelligently, ensuring that irrigation contributes to both food security and long-term environmental sustainability. 

6. Building Climate Resilience Through Stronger Institutions

Climate resilience is not achieved through infrastructure alone. It depends equally on institutions that can coordinate policy, mobilise investment and guide implementation across national and county governments.

One of the less visible yet highly significant aspects of Mr Tanui's work has been strengthening the institutional framework that supports climate-resilient irrigation. The proposed Land Reclamation Bill, 2026, illustrates this approach. Beyond restoring degraded landscapes, the Bill proposes institutional, regulatory and financing mechanisms that would enable land reclamation programmes to operate consistently over the long term rather than through isolated projects. 

That matters because climate change is not a temporary challenge. It demands governance systems capable of planning decades ahead. By helping establish legal and institutional foundations, the State Department is creating conditions under which irrigation, ecosystem restoration and land management can reinforce one another.

7. Encouraging Investment in Climate-Smart Agriculture

Public investment alone cannot deliver Kenya's irrigation ambitions. Expanding irrigated agriculture to meet future food demand requires collaboration with farmers, financial institutions, development partners and the private sector.

Mr Tanui has consistently framed irrigation as an economic investment rather than simply a government service. Reliable irrigation reduces production risks, increases crop yields and gives farmers greater confidence to adopt improved technologies and high-value crops. These outcomes make agriculture more attractive to investors while creating opportunities for agro-processing, rural enterprises and agricultural exports.

The government's irrigation strategy similarly recognises that expanding modern irrigation infrastructure and encouraging partnerships can unlock new economic opportunities while strengthening resilience against climate shocks. Irrigation, in this sense, becomes both an adaptation measure and a catalyst for rural transformation. 

8. Recognising That Climate Resilience Begins With Communities

No irrigation programme can succeed if it is designed only from boardrooms and implemented without the participation of the people it is intended to serve. Climate resilience is ultimately built at the community level, where farmers make daily decisions about crops, water use and land management.

Mr Joel Tanui's portfolio reflects this understanding by placing communities at the heart of climate adaptation. Whether through land reclamation initiatives, water harvesting programmes or irrigation water management, the objective extends beyond constructing infrastructure. It is about enabling people to become active stewards of their own natural resources.

This community-centred approach is particularly important in Kenya's arid and semi-arid lands, where local knowledge of landscapes, seasonal water flows and indigenous conservation practices complements scientific planning. When communities participate in designing and maintaining irrigation systems, projects are more likely to remain functional long after construction is complete. Sustainable irrigation is therefore as much about social ownership as it is about engineering excellence.

9. Supporting National Food Security Through Climate Adaptation

Food security has traditionally been measured by the amount of food produced. Climate change has expanded that definition. Today, the real question is whether agricultural systems can continue producing food despite prolonged droughts, erratic rainfall and rising temperatures.

This is where irrigation becomes indispensable. Reliable access to water reduces dependence on increasingly unpredictable weather, allowing farmers to plant with greater confidence, diversify into higher-value crops and maintain production throughout the year. The benefits extend beyond individual farms. Stable production supports national food supplies, moderates price volatility and strengthens rural economies.

Mr Tanui's work aligns with this broader national objective. By advancing climate-resilient irrigation alongside land reclamation and improved water management, the State Department for Irrigation is helping create agricultural systems that are better equipped to withstand future climate shocks. This integrated approach supports Kenya's long-term food security ambitions while contributing to sustainable economic development. The National Irrigation Sector Investment Plan similarly recognises irrigation as a cornerstone for achieving higher agricultural productivity and climate resilience across the country. (State Department for Irrigation strategic policy documents)

10. Positioning Irrigation as a Pillar of Kenya's Green Economy

Perhaps the most significant contribution of Mr Joel Tanui's work is the way it reframes irrigation within Kenya's development agenda.

For decades, irrigation was often viewed simply as an agricultural intervention. Today, it is increasingly recognised as part of a much larger strategy encompassing environmental restoration, climate adaptation, economic growth and sustainable resource management.

Land reclamation restores degraded ecosystems while expanding productive land. Efficient irrigation improves water productivity and strengthens agricultural resilience. Climate-smart planning protects livelihoods against increasingly frequent weather extremes. Together, these interventions contribute to what many policymakers describe as a green economy, one where economic progress and environmental sustainability reinforce rather than undermine each other.

This perspective reflects a growing appreciation that Kenya's future prosperity will depend not only on producing more food but also on managing land and water resources responsibly. Irrigation is no longer just about moving water from one place to another. It is about creating resilient landscapes capable of supporting people, ecosystems and economic growth for generations.

Conclusion

Climate change is reshaping agriculture in ways that demand more than short-term solutions. The challenge is no longer simply to respond to droughts and floods after they occur. It is to build systems that enable communities, landscapes and economies to adapt before crises emerge.

Mr Joel Tanui's work within the State Department for Irrigation demonstrates this broader vision. Through the promotion of climate-resilient irrigation, support for land reclamation, improved irrigation water management and the development of stronger policy frameworks, his portfolio reflects an understanding that water security and environmental stewardship are inseparable from Kenya's development ambitions.

The journey is far from complete, and significant investment, collaboration and innovation will still be required. Yet the direction is increasingly clear. Climate resilience is becoming a defining principle of Kenya's irrigation agenda, not as an isolated environmental objective, but as a practical pathway towards food security, restored landscapes, stronger rural livelihoods and sustainable economic growth.

As Kenya continues to confront the realities of a changing climate, irrigation will remain one of its most powerful adaptation tools. The measures being advanced today have the potential to influence not only agricultural productivity, but also how future generations inherit, protect and benefit from the country's most valuable natural resources.

Article by Victor Patience Oyuko. To buy coffee Mpesa 0799996596