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Climate change: Looming threats to irrigated agriculture in SL

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by Eng. Thushara Dissanayake

Sri Lanka boasts a legacy of massive ancient irrigation systems built by kings in the dry zone in ancient times. Parakramabhu the Great is believed to have said, “Let not even a drop of rain water go to the sea without benefiting man.” His words may have inspired the professionals in the water sector to develop the irrigated agriculture of the country further, harnessing high rainfall. Total annual renewable surface water resources in Sri Lanka is about 52 billion cubic meters (BCM), while total average annual rainfall is about 112 BCM.

Since the construction of the Senanayake Samudra in the 1950s as the largest reservoir in Sri Lanka, organizations in the water sector have completed many new reservoir projects of large capacities. Lunugamwehera, Weheragala, Deduru Oya, Kalugal Oya and Yan Oya are some of the recent achievements aimed at promoting irrigated agriculture.

The total storage capacity of major and medium irrigation reservoirs in Sri Lanka is about 3.4 BCM. In addition, major reservoirs constructed under the Accelerated Mahaweli Development Project are considered to be multipurpose as the main objective is the generation of hydro-electricity. Nevertheless, the contribution of the Mahaweli reservoirs to irrigated agriculture of the country is indispensable. With the newly constructed Moragahakanda-Kaluganga reservoirs, the total Mahaweli reservoir capacity stands at around 3.2 BCM. In addition, the total number of minor tanks in the country are estimated to be over 10,000, though the total water storage capacity is not accurately known.

 

Reliability of these reservoirs dependent on rainfall

Irrigated agriculture is the largest user of raw water in Sri Lanka. The country receives almost a constant volume of rainfall annually. But, this does not mean that we have no water issues. Generally, reservoir designs are based on past rainfall characteristics of the areas where they are located. Hence, they depend not only on annually expected rainfall volume but also the temporal pattern of rainfall. They will have the desired storage levels to cater to the demand only if they receive expected rainfall at the right time in the right quantity. In addition, it is important to ensure that the water withdrawal rates remain within the envisaged limits during the reservoir design. When rainfall becomes more variable within season and over time, reliability of reservoirs will decrease.

 

Climate change impacts reservoir operations

As explained above if a reservoir does not receive expected rainfall in right quantity in right time it will more or less fail to serve the water demand sites up to the expectation. On the contrary, if it gets rainfall more than expected during a operation cycle the additional amount of water may spill out of the reservoir and find its way to the the sea unless there are any other storage reservoirs downstream to receive it.

The climate change has caused rainfall to behave erratically. Technically speaking what we experience today is a temporal variation accompanied with fluctuation in intensities. Climate change experts predict that Sri Lanka will experience longer dry spells frequently in the future. During such dry spells, often unforeseen, our reservoirs would be incapable of supplying the irrigation water demands continuously throughout the cultivation season.

The global warming or the increase in atmospheric temperature is the root cause of climate change. Hence, the other major impact of climate change is an increase in evapotranspiration. As a consequence, water requirement of the agricultural crops goes up demanding more water from reservoirs. In the meantime, water losses from the reservoirs themselves by way of evaporation will also go up. These scenarios will create more water stresses on irrigated agriculture in future.

When the conditions are not favourable for agriculture there will be a sharp decrease in people engaged in agriculture abandoning their lands. Hence, this crisis should not be understood merely as a water crisis as it has the potential to have ramifications in other social and economic spheres. Therefore, the decrease in agricultural production will lead to higher selling prices, which neither the government nor the consumer is happy about.

 

Possible interventions to

resolve the issue

We are not in a position to control a natural phenomenon like rainfall nor to predict the pattern of climate change and its impacts in future accurately. Hence, only option available with us is improving our water management strategies and practices. The construction of storage reservoirs wherever possible will only be a part of the solution. However, we have utilized or identified almost all possible locations for reservoir construction by, now and most of the remaining places have high social and environmental implications.

 

Under these circumstances some alternatives that may be use to the stakeholders concerned are discussed below. It should be acknowledged that some of these concepts are already in practice but in an ad hoc manner. What is needed is to implement them with clear goals and monitor and assess the outcomes after implementation.

 

Irrigation system modernization

We are not in a position to control a natural phenomenon like rainfall. Besides, we are not able to predict the pattern of climate change and its impacts in the future accurately. Hence, only option available to us is improving our water management strategies and practices.

At present the actual water requirement for producing 1kg of paddy is around 2,500 – 3,500 litres while the crop requirement is about 1,400 litres. This higher requirement is mainly due to the water losses during conveyance and application. Our overall irrigation water use efficiencies are assumed to be just 40 per cent, though no adequate research has been done on this at the field level to calculate it accurately systemwise.

Currently, many countries are working on irrigation modernization (IM) to ensure sustainable irrigated agriculture. The Food and Agriculture Organization (FAO) defines IM as “a process of technical and managerial upgrading (as opposed to mere rehabilitation) of irrigation schemes combined with institutional reforms, with the objective to improve resource utilization (labour, water, economic, environmental) and water delivery service to farms”. Simply speaking, IM consists of a set of interventions to improve water management and level of on-farm services to farmers, which eventually leads to improved crop production and resilience to climate change under the present context. It includes both engineering and management interventions.

These interventions for better water management are mainly as follows:

 

1. Upgrading of water conveyance systems so that evaporation and infiltration losses can be minimised. Deficient canals are replaced with concrete lined canals and underground pipes

2. Process improvement in water allocation to farmers with modern techniques like supervisory control and data acquisition (SCADA), that intervenes in the process without changing the rules of the water management

3. Pragmatic desilting of reservoirs to regain their original capacities where applicable

4. Improvement of agricultural roads and access roads in farming areas to facilitate easy operations and management

5. Capacity building of farmers

 

Watershed conservation

All the irrigation systems are not reservoir-based. There are large number of anicut-based minor irrigation systems. They depend water diverted from rivers or streams. The success of these systems depends on the water availability of rivers and streams.

During rain, a considerable portion of water infiltrates into the ground, and rivers and streams are fed gradually by this groundwater making them perennial. For this mechanism, forests in the river basins play a major role by delaying rain water runoff, which in turn helps ground water recharge. Yet, the issue is diminishing forest cover in our watersheds. This rate of forest cover reduction will adversely affect ground water infiltration and eventually result in dried up rivers and streams. Further, agriculture depending on ground water will face water stresses. Hence, importance of watershed conservation goes without saying.

 

Farmers’ responsibilities and the role of the extension services

Sri Lankan farmers are supplied with irrigation water free. This does not mean that water does not involve any costs. Even though the relevant authorities could intervene to minimise conveyance water losses of the systems, the control of water application is mainly in farmers’ hands. Therefore, they also have a big role to play in minimising water application losses.

Traditional water application methods should be replaced with best water saving methods. The method known as alternative wetting and drying (AWD), introduced a long time ago, is a water management technique practised in paddy cultivation that need much less water than the usual practice of keeping standing water in the paddy field and proven to give higher yields. In areas where water stress is frequent crops that require less water should be grown with appropriate cultivation methods. If there is an evident shift in rainy season, crop cultivation periods can be adjusted to allow earlier or later planting so that both coincide, in order to reduce irrigation water use.

Where most of the farmers are concerned, dominant factor in the crop selection process seems to be market price and not giving enough attention to crop water requirements. In some cases, it is the farmers’ status quo that matters. Hence, relevant authorities should carefully focus on these issues when they render their extension services to the farmer community. In this respect, better inter-agency cooperation and communication and active participation are essential. No need to mention how the modern technology can be used by the authorities for creating an effective work environment.

 

Final remarks

 

The focus of this article has been on looming threats to our irrigated agriculture and discuss few proactive measures briefly and the increasing demand for food due to increasing population has not been factored in. Implementing aforesaid proactive measures need the dedicated action of many players including politicians, public sector organisations and the farmer community. Failure to take prompt action will result in additional stress in food production in the future and that in turn will affect the economy of the country as more and more food items will have to be imported.

(The writer is a chartered Civil Engineer. This article is based on his personal views and does not reflect those of the organisations where he holds positions.) 



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New mediation law for smarter dispute resolution of civil and commercial disputes – I

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The Mediation (Civil and Commercial Disputes) Bill  was passed by the Parliament on Thursday, June 11, 2026.  Harshana  Nanayakkara, Minister of Justice and National Integration, introduced the Bill, and explained its provisions and value for Sri Lanka and global developments in the use of mediation. Encouragingly, it was passed unanimously.

Sri Lanka’s commitment to provide legislative support for the use of mediation is timely and most welcome. Given that the backlog of cases pending before courts is over a staggering 1.1 million, it is clear that Sri Lanka is yet another country that remains challenged to find responses to make  dispute resolution more efficient. The impact of laws delays is serious and damaging not only to the disputants personally, but also for businesses and the economic development of the country. The delays in concluding cases impacts the economy adversely, both directly and indirectly,  but are often seen only as an access to Justice concern. This is unfortunate. In many jurisdictions across the globe, alternative dispute resolution processes (ADR), such as mediation, have been introduced to alleviate laws delays. While Sri Lanka enacted legislation (1988) to provide for mediation in respect of minor community disputes of a low monetary threshold, the enactment of the new law heralds a commitment to provide for the recognition of a disciplined regime for its use for higher value civil and commercial disputes.

The new law provides for the recognition of mediation as a dispute resolution option that can be voluntarily selected by parties, and for a governance regime to ensure that mediations are conducted in compliance with certain standards which are globally accepted. It provides statutory recognition to the principle that a mediated settlement agreement that has been signed by the disputants, is valid in law. It does not provide for any management control by government or establish entities. In addition to the voluntary reference by parties, a  court can also refer a dispute in an action before it, to mediation, at its discretion, after considering all  circumstances and if considered appropriate.  The voluntary nature of the process is not affected because, while the court can refer the dispute to mediation and the parties must then engage in the mediation, there is no compulsion for the parties to settle against their will.

The law sets out the obligations of Mediators, disputants and the Service Provider. Certain categories of disputes cannot be referred  to mediation.  These are disputes the settlement of which requires the inclusion of terms that can be given effect to, only on a decree of court, such as the termination of a marriage or a declaration of nullity of marriage or the adoption of a child or the partition of land to obtain rights in rem.  A schedule sets out eleven (11) categories of actions that cannot be settled by mediation. However,  matters relevant to such disputes may be mediated for the purpose of submitting terms of settlement to court for consideration of incorporation in a judgement, decree or order in compliance with applicable law.

The new law also provides that in a mediation, certain  key principles of the process must be complied with. These include the  confidentiality and the without prejudice rule in respect of matters discussed at the mediation; the  rule that Mediators must be neutral and impartial; the party centric nature of the process that provides primacy to the wishes of the disputants including that it is they that determine the outcome and that a settlement is reached only if all disputants agree to the terms; the noncoercive role of the mediator whose duty is to facilitate and manage the process using mediation specific skills and techniques, but is debarred from imposing a decision. Although a settlement agreement is valid in law, provision is included to obtain a decree of court, based on the terms of the settlement. A mediated settlement agreement can be set aside on an application made to court, on specific limited grounds which are provided for, including that it is offensive to the public policy of the country. If the parties are unable to agree on a settlement, a certificate of non-settlement is issued. The provisions of the law are based on international best practices and principles articulated in the 1988 UN Mediation Convention  (the Singapore Convention) and the UNCITRAL model law.

The popularity of mediation has grown for its value in being time efficient, cost effective and party centric. Parties have control over the outcome and have the space to discuss their concerns, fears and interests and need never agree to settle unless fully satisfied that settlement terms address their interests. Disputants are free to walk out of a mediation process at any time, if dissatisfied with the progress. The discussions are confidential and a valuable feature is that the process offers an opportunity to reduce acrimony which is prevalent in most disputes, and to restore fractured relationships which is very important in family  and  business related disputes. This benefit and the prospects for governments to reduce the cost of the administration of justice, by using mediation,  is articulated in the preamble to the 2018 UN Convention on International Settlement Agreements Resulting from Mediation (2018) which states that the use of mediation results in significant benefits.

 Pursuant to the interest generated within the country regarding the value of using Mediation for commercial dispute resolution, and heralding what we like to see as the initial steps of a Mediation boom in the country, several positive advancements have taken place –

*    Parties have opted to include mediation in the dispute resolution clause in contracts;

*    Given that mediating disputes requires  very specialised techniques and skills, many professionals, including predominantly Lawyers, have engaged in training programmes offered by international training bodies that offer accreditation;

*    Trained Mediators are engaged in an effort to form themselves as a professional Organisation;

*    Mediation  Advocacy training programmes have been held to train Lawyers on their niche role in the mediation process. That role is distinctly different to that of a court Lawyer who’s obligations are centred on an adversarial approach where the dispute is adjudicated in terms of the law alone.  Hence lawyers need training to be useful within a non-adversarial process which is party centric and has a focus on reaching a settlement, based on the interests of disputants.

*    Sri Lanka enacted the Recognition and Enforcement of International Mediated Settlement Agreements Act No. 5 of 2024 (the UN Mediation Convention Act) and ratified the Convention becoming the 14th country to do so. Sri Lanka will be seen as an investor friendly country in respect of dispute resolution where mediation is used, since it offers an enforcement regime which is recognised universally.

*    The landmark determination of the Supreme Court (SC SD 22 of 2025) in the challenge by the Bar Association to the constitutionality of the Mediation (Civil and Commercial Disputes) Bill, found that none of the provisions of the Bill were unconstitutional and gave a judicial sign off to statutory provisions that seek to ensure that mediation services are provided in this country, in a disciplined manner in compliance with universally accepted standards.

*    Perhaps, inspired by the statutory obligation imposed on judges to attempt pretrial settlement of disputes, in terms of the Small Claims Court Act and the Small Claims Court Procedure Act (both of 2022) and the Civil Procedure Code provisions on Pretrial Conference and Pretrial Orders, 125 District Judges were recently trained (with support from the ADB) in Mediation. The training provided a dual benefit – it provided training in  skills that are required to settle disputes and equally importantly, provided a comprehensive understanding of how mediation will function when judges themselves refer disputes for settlement by private mediators.

*    Trained Mediators are already conducting mediations with success.

*    A not-for-profit guarantee company, the International ADR Centre – www.iadrc.lk ) was established in 2018  as a joint venture of the Ceylon Chamber of Commerce and the Institute for the Development of Commercial Law & Practice (ICLP) to promote ADR and is actively engaged in promoting mediation through training, disseminating information and creating awareness among stakeholders, including the business sector.   In addition to the International ADR Centre, “Udecide”  is a project that promotes training of mediators and other activities that enrich the mediation culture.

*    Commercial Mediation has been included in the Masters level programme at the Colombo University;

*    The Sri Lanka Law College offers a component on Mediation in the Post Attorney Diploma programme, which commenced recently.

The private sector was actively engaged in the drafting of the  Mediation Bill under the leadership of the International ADR Centre, which held many stakeholder consultations to obtain feedback from those that were conversant with the subject. The Centre had previously assisted the government to draft the UN Mediation Convention Act (Act No. 5 of 2024).

Several international Organisations that previously provided for resolution of disputes by arbitration, have provided for institutional rules to provide mediation services. These include WIPO and the ICC. Specifically, in relation to Investor State dispute resolution (ISDR), the  International Bar Association (IBA) adopted its  Mediation  Rules in 2012 and ICSID (of the World Bank group) adopted its Mediation Rules in 2022.  UNCITRAL, which is currently working on reforming  ISDR, promotes mediation, observing that the use of mediation could reduce the costs of ISDS and also preserve relationships between the investor and the State. UNCITRAL has formulated provisions on and Guidelines for, Mediation for investor state dispute resolution.

(To be continued)

by Dhara Wijayatilake
Attorney-at-Law; Former Secretary to the Ministry of Justice; Director and Secretary General of the International ADR Centre.

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A Testament to the Sri Lankan family

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The passing of Dr. Devanesan Nesiah a few days ago brought back memories that spanned more than four decades. Devanesan signed the witness register at my marriage in 2002. It was a year of hope. The Ceasefire Agreement between the government and the LTTE had brought a respite from a war that had devastated the country for nearly two decades. The possibility of peace seemed real. It was fitting that Devanesan should be present on that occasion because his entire life was dedicated to building bridges across divides and seeking rational and humane solutions to conflict. He was a friend, mentor, and guide whose life embodied values that Sri Lanka, indeed the world, needs today.

In reflecting on Dr. Nesiah’s life, we need to be reminded that the forces that unite us as a people in Sri Lanka are stronger than those that divide us, and that the bonds of human affection can transcend even the deepest divisions of ethnicity, history and politics. I first met him in 1984. I had just had my very first newspaper article published in the Jaffna-based Saturday Review. The editor was Gamini Navaratne, a Sinhalese. This was a reminder that even during the darkest period of ethnic conflict, the bonds between communities remained strong. The article I had written was based on my encounters with the anti-Tamil violence of July 1983.

At that time, Dr Nesiah was the Government Agent of Jaffna. Tens of thousands of Tamil people who had fled violence in the south had been transported to the north by a government that had failed to protect them. He came up to me at an event, introduced himself, and told me that he liked what I had written. He also said that he would soon be leaving for Harvard University’s Kennedy School of Government and that we could meet there. Over the next three years, Devanesan and his wife Anita adopted me into their family.  I used to visit them two or three times a week, not only to be given meals by Anita but to discuss matters with Devanesan.  These included the academic papers and newspaper articles that were written. Later, Anita earned her PhD in religion and served on the boards of many civic organisations, including the National Peace Council.

Practical Solution

In 1992, we had both returned to work in Sri Lanka when Devanesan invited me to accompany him to Jaffna to celebrate the eightieth birthday of his father, K Nesiah, the distinguished educationist affectionately known as Professor Nesiah. The older Nesiah had been a leading member of the Jaffna Youth Congress. This remarkable movement championed complete independence from British rule, national unity, and the eradication of social inequalities based on caste and communal identity.

At a time when many feared that independence would lead to majoritarian domination, the leaders of the Youth Congress chose instead to place their faith in a shared Sri Lankan future. They believed that people from different communities could build a common nation while preserving their distinctive identities. So did Devanesan.  This vision remains relevant today. It needs to be actualized.

The tragedy of Sri Lanka’s post-independence history is not that diversity exists. Diversity exists in every society. The tragedy is that we often allow diversity to become a source of fear, though we share many of the same values of family, hospitality, respect for elders and compassion towards others. During our visit to Jaffna in 1992, we met representatives of the LTTE administration, including Raheem. The discussion turned to the controversial issue of merging the Northern and Eastern Provinces. Dr Nesiah argued that if the merger could not be achieved due to political opposition, it might be more rational to seek greater powers for provincial councils instead. Raheem disagreed.  Devanesan was interested in finding practical ways to achieve justice and coexistence. That was characteristic of him.

Devanesan Nesiah was a student of conflict and strategy. He became a doctoral student of Professor Thomas Schelling, who would later receive the Nobel Prize for his pioneering work on conflict and cooperation. Schelling’s insight was that even in the midst of conflict, there are usually common interests that adversaries share. Even adversaries locked in a struggle usually depend on each other for the outcome they each want. The challenge is to identify those common interests and build upon them. Conflict is not simply a contest between enemies. It is also a search for ways to coexist. Together as students and peace practitioners, we applied those theories to the Sri Lankan context to understand what was going on and to share that understanding with the Sri Lankan people.

Rational Empathy

Dr Nesiah spoke his mind, truth to power. He was a man of logic, rationality, and principle. His integrity came at a cost. His public service career experienced many ups and downs because he refused to accommodate irrational or corrupt demands. There were periods when he was sidelined into that administrative limbo known as the “pool” and assigned no substantive responsibilities for refusing to give in to political demands. Like the rest of his larger family, most notably the Hoole family of Jaffna, he would not abandon his principles. In 2018, to protest the action of President Maithripala Sirisena in sacking the then government he returned his Deshamanya Award (Pride of the Nation) national civil honourn which was soon thereafter overturned by the Supreme Court as being unconstitutional. His commitment was not to personal advancement, but to what he believed was right.

My wife Sumadhu recalls a story he told her. One day, while travelling on official duty, he told her how he had seen a thalagoya, a monitor lizard, trussed up and being taken away for slaughter. The sight of the creature’s suffering affected him deeply. He said he saw tears in its eyes and described the moment of awakening. From that day onwards, he gave up eating meat.

The story brings to mind the biblical story of the conversion of St Paul on the road to Damascus and the Buddhist exhortation, “May all living beings be well and happy.” But the deeper significance lies not in religious comparison. It lies in the awakening of empathy.

That was the essence of Dr Devanesan Nesiah’s worldview. The prejudices that society often imposes through ethnicity, religion, caste, or gender had little hold on him. He saw them as human constructs that often served to privilege some while excluding others. Such were his values that made him an extraordinary human being. Dr. Nesiah lived according to that understanding. He showed that integrity can survive amidst conflict. He reminded us that reason and compassion are not opposites but partners, that what unites us as Sri Lankans inhabiting our common island home has always been greater than what divides us, and we need to build our institutions accordingly.

I am proud that he was my friend. I am grateful that he was my mentor.

by Jehan Perera

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City of Dreams …Heartbeat of Colombo

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Enroute

If Colombo’s nightlife had a pulse, you’d find it 23 floors up, at Gatz, City of Dreams, Cinnamon Life.

The entertainment lounge has shed its old skin and stepped out supper-club style — think dim lights, clinking glasses, and live music that doesn’t ask you to choose between dinner and a show. You get both.

What’s more, at the new look Gatz the music never stops and it’s all happening seven nights a week … with live entertainment, and this is the scene, beat by beat:

Monday and Tuesday: Top Hats with Daniella/Naomi, from 7.00 pm onwards.

Sohan, Kamal Munasinghe (GM, Cinnamon Life) and Imran of
Funtime Entertainments

One of Colombo’s most sought-after bands is now a Monday-Tuesday ritual.

With a super repertoire, Top Hats can swing from lounge jazz to dancefloor fire. Big venues love them. Now Gatz gets to claim them.

Wednesday: Enroute with Gananath & Debbie – from 7.00 pm onwards.

Want New York at sunset? This is it. Gananath & Debbie transport you straight to the heady days of Frank Sinatra, Dean Martin, and Ray Charles …old-school cool, live and unfiltered.

Thursday to Sunday: Terry & the Big Spenders – from 8.00 pm onwards.

Terry & The Big Spenders

The crowd favourite. A super big band sound that owns the 70s, 80s and 90s.

If you’ve been waiting for horns, harmonies, and nostalgia with volume, Terry & the Big Spenders deliver it nightly. No wonder they’re a huge hit.

Gatz is now an entertainment lounge, in Supper Club style, with Happy Hour very day, from 6.00 pm to 8.00 pm because the night, they say, should start with a toast.

And, from July, weekends at the Gatz go global. Local and foreign guest stars will be around to entertain you. Gatz is certainly booking big.

Wow! That would be another exciting experience for those patronising the most talked about venue in town.

In charge of the new setup is our legendary entertainer/singer Sohan Weerasinghe, along with Imran of Funtime Entertainment.

The twosome, with invaluable assistance from the General Manager, Kamal Munasinghe, and the entire team at Cinnamon Life, have built Gatz into more than a venue. They have turned it into the “Heartbeat of the City.”

So come for happy hour. Stay for Terry’s horns, Sing-along with Enroute and Dance with Top Hats, all on the 23rd floor, and while Colombo sparkles below the bands will take you higher.

Remember, the heartbeat is loudest at Gatz.

Top Hats

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