Features
Climate change: Looming threats to irrigated agriculture in SL
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.)
Features
Rebuilding the country requires consultation
A positive feature of the government that is emerging is its responsiveness to public opinion. The manner in which it has been responding to the furore over the Grade 6 English Reader, in which a weblink to a gay dating site was inserted, has been constructive. Government leaders have taken pains to explain the mishap and reassure everyone concerned that it was not meant to be there and would be removed. They have been meeting religious prelates, educationists and community leaders. In a context where public trust in institutions has been badly eroded over many years, such responsiveness matters. It signals that the government sees itself as accountable to society, including to parents, teachers, and those concerned about the values transmitted through the school system.
This incident also appears to have strengthened unity within the government. The attempt by some opposition politicians and gender misogynists to pin responsibility for this lapse on Prime Minister Dr Harini Amarasuriya, who is also the Minister of Education, has prompted other senior members of the government to come to her defence. This is contrary to speculation that the powerful JVP component of the government is unhappy with the prime minister. More importantly, it demonstrates an understanding within the government that individual ministers should not be scapegoated for systemic shortcomings. Effective governance depends on collective responsibility and solidarity within the leadership, especially during moments of public controversy.
The continuing important role of the prime minister in the government is evident in her meetings with international dignitaries and also in addressing the general public. Last week she chaired the inaugural meeting of the Presidential Task Force to Rebuild Sri Lanka in the aftermath of Cyclone Ditwah. The composition of the task force once again reflects the responsiveness of the government to public opinion. Unlike previous mechanisms set up by governments, which were either all male or without ethnic minority representation, this one includes both, and also includes civil society representation. Decision-making bodies in which there is diversity are more likely to command public legitimacy.
Task Force
The Presidential Task Force to Rebuild Sri Lanka overlooks eight committees to manage different aspects of the recovery, each headed by a sector minister. These committees will focus on Needs Assessment, Restoration of Public Infrastructure, Housing, Local Economies and Livelihoods, Social Infrastructure, Finance and Funding, Data and Information Systems, and Public Communication. This structure appears comprehensive and well designed. However, experience from post-disaster reconstruction in countries such as Indonesia and Sri Lanka after the 2004 tsunami suggests that institutional design alone does not guarantee success. What matters equally is how far these committees engage with those on the ground and remain open to feedback that may complicate, slow down, or even challenge initial plans.
An option that the task force might wish to consider is to develop a linkage with civil society groups with expertise in the areas that the task force is expected to work. The CSO Collective for Emergency Relief has set up several committees that could be linked to the committees supervised by the task force. Such linkages would not weaken the government’s authority but strengthen it by grounding policy in lived realities. Recent findings emphasise the idea of “co-production”, where state and society jointly shape solutions in which sustainable outcomes often emerge when communities are treated not as passive beneficiaries but as partners in problem-solving.
Cyclone Ditwah destroyed more than physical infrastructure. It also destroyed communities. Some were swallowed by landslides and floods, while many others will need to be moved from their homes as they live in areas vulnerable to future disasters. The trauma of displacement is not merely material but social and psychological. Moving communities to new locations requires careful planning. It is not simply a matter of providing people with houses. They need to be relocated to locations and in a manner that permits communities to live together and to have livelihoods. This will require consultation with those who are displaced. Post-disaster evaluations have acknowledged that relocation schemes imposed without community consent often fail, leading to abandonment of new settlements or the emergence of new forms of marginalisation. Even today, abandoned tsunami housing is to be seen in various places that were affected by the 2004 tsunami.
Malaiyaha Tamils
The large-scale reconstruction that needs to take place in parts of the country most severely affected by Cyclone Ditwah also brings an opportunity to deal with the special problems of the Malaiyaha Tamil population. These are people of recent Indian origin who were unjustly treated at the time of Independence and denied rights of citizenship such as land ownership and the vote. This has been a festering problem and a blot on the conscience of the country. The need to resettle people living in those parts of the hill country which are vulnerable to landslides is an opportunity to do justice by the Malaiyaha Tamil community. Technocratic solutions such as high-rise apartments or English-style townhouses that have or are being contemplated may be cost-effective, but may also be culturally inappropriate and socially disruptive. The task is not simply to build houses but to rebuild communities.
The resettlement of people who have lost their homes and communities requires consultation with them. In the same manner, the education reform programme, of which the textbook controversy is only a small part, too needs to be discussed with concerned stakeholders including school teachers and university faculty. Opening up for discussion does not mean giving up one’s own position or values. Rather, it means recognising that better solutions emerge when different perspectives are heard and negotiated. Consultation takes time and can be frustrating, particularly in contexts of crisis where pressure for quick results is intense. However, solutions developed with stakeholder participation are more resilient and less costly in the long run.
Rebuilding after Cyclone Ditwah, addressing historical injustices faced by the Malaiyaha Tamil community, advancing education reform, changing the electoral system to hold provincial elections without further delay and other challenges facing the government, including national reconciliation, all require dialogue across differences and patience with disagreement. Opening up for discussion is not to give up on one’s own position or values, but to listen, to learn, and to arrive at solutions that have wider acceptance. Consultation needs to be treated as an investment in sustainability and legitimacy and not as an obstacle to rapid decisionmaking. Addressing the problems together, especially engagement with affected parties and those who work with them, offers the best chance of rebuilding not only physical infrastructure but also trust between the government and people in the year ahead.
by Jehan Perera
Features
PSTA: Terrorism without terror continues
When the government appointed a committee, led by Rienzie Arsekularatne, Senior President’s Counsel, to draft a new law to replace the Prevention of Terrorism Act (PTA), as promised by the ruling NPP, the writer, in an article published in this journal in July 2025, expressed optimism that, given Arsekularatne’s experience in criminal justice, he would be able to address issues from the perspectives of the State, criminal justice, human rights, suspects, accused, activists, and victims. The draft Protection of the State from Terrorism Act (PSTA), produced by the Committee, has been sharply criticised by individuals and organisations who expected a better outcome that aligns with modern criminal justice and human rights principles.
This article is limited to a discussion of the definition of terrorism. As the writer explained previously, the dangers of an overly broad definition go beyond conviction and increased punishment. Special laws on terrorism allow deviations from standard laws in areas such as preventive detention, arrest, administrative detention, restrictions on judicial decisions regarding bail, lengthy pre-trial detention, the use of confessions, superadded punishments, such as confiscation of property and cancellation of professional licences, banning organisations, and restrictions on publications, among others. The misuse of such laws is not uncommon. Drastic legislation, such as the PTA and emergency regulations, although intended to be used to curb intense violence and deal with emergencies, has been exploited to suppress political opposition.
International Standards
The writer’s basic premise is that, for an act to come within the definition of terrorism, it must either involve “terror” or a “state of intense or overwhelming fear” or be committed to achieve an objective of an individual or organisation that uses “terror” or a “state of intense or overwhelming fear” to realise its aims. The UN General Assembly has accepted that the threshold for a possible general offence of terrorism is the provocation of “a state of terror” (Resolution 60/43). The Parliamentary Assembly of the Council of Europe has taken a similar view, using the phrase “to create a climate of terror.”
In his 2023 report on the implementation of the UN Global Counter-Terrorism Strategy, the Secretary-General warned that vague and overly broad definitions of terrorism in domestic law, often lacking adequate safeguards, violate the principle of legality under international human rights law. He noted that such laws lead to heavy-handed, ineffective, and counterproductive counter-terrorism practices and are frequently misused to target civil society actors and human rights defenders by labelling them as terrorists to obstruct their work.
The United Nations Office on Drugs and Crime (UNODC) has stressed in its Handbook on Criminal Justice Responses to Terrorism that definitions of terrorist acts must use precise and unambiguous language, narrowly define punishable conduct and clearly distinguish it from non-punishable behaviour or offences subject to other penalties. The handbook was developed over several months by a team of international experts, including the writer, and was finalised at a workshop in Vienna.
Anti-Terrorism Bill, 2023
A five-member Bench of the Supreme Court that examined the Anti-Terrorism Bill, 2023, agreed with the petitioners that the definition of terrorism in the Bill was too broad and infringed Article 12(1) of the Constitution, and recommended that an exemption (“carve out”) similar to that used in New Zealand under which “the fact that a person engages in any protest, advocacy, or dissent, or engages in any strike, lockout, or other industrial action, is not, by itself, a sufficient basis for inferring that the person” committed the wrongful acts that would otherwise constitute terrorism.
While recognising the Court’s finding that the definition was too broad, the writer argued, in his previous article, that the political, administrative, and law enforcement cultures of the country concerned are crucial factors to consider. Countries such as New Zealand are well ahead of developing nations, where the risk of misuse is higher, and, therefore, definitions should be narrower, with broader and more precise exemptions. How such a “carve out” would play out in practice is uncertain.
In the Supreme Court, it was submitted that for an act to constitute an offence, under a special law on terrorism, there must be terror unleashed in the commission of the act, or it must be carried out in pursuance of the object of an organisation that uses terror to achieve its objectives. In general, only acts that aim at creating “terror” or a “state of intense or overwhelming fear” should come under the definition of terrorism. There can be terrorism-related acts without violence, for example, when a member of an extremist organisation remotely sabotages an electronic, automated or computerised system in pursuance of the organisation’s goal. But when the same act is committed by, say, a whizz-kid without such a connection, that would be illegal and should be punished, but not under a special law on terrorism. In its determination of the Bill, the Court did not address this submission.
PSTA Proposal
Proposed section 3(1) of the PSTA reads:
Any person who, intentionally or knowingly, commits any act which causes a consequence specified in subsection (2), for the purpose of-
(a) provoking a state of terror;
(b) intimidating the public or any section of the public;
(c) compelling the Government of Sri Lanka, or any other Government, or an international organisation, to do or to abstain from doing any act; or
(d) propagating war, or violating territorial integrity or infringing the sovereignty of Sri Lanka or any other sovereign country, commits the offence of terrorism.
The consequences listed in sub-section (2) include: death; hurt; hostage-taking; abduction or kidnapping; serious damage to any place of public use, any public property, any public or private transportation system or any infrastructure facility or environment; robbery, extortion or theft of public or private property; serious risk to the health and safety of the public or a section of the public; serious obstruction or damage to, or interference with, any electronic or automated or computerised system or network or cyber environment of domains assigned to, or websites registered with such domains assigned to Sri Lanka; destruction of, or serious damage to, religious or cultural property; serious obstruction or damage to, or interference with any electronic, analogue, digital or other wire-linked or wireless transmission system, including signal transmission and any other frequency-based transmission system; without lawful authority, importing, exporting, manufacturing, collecting, obtaining, supplying, trafficking, possessing or using firearms, offensive weapons, ammunition, explosives, articles or things used in the manufacture of explosives or combustible or corrosive substances and biological, chemical, electric, electronic or nuclear weapons, other nuclear explosive devices, nuclear material, radioactive substances, or radiation-emitting devices.
Under section 3(5), “any person who commits an act which constitutes an offence under the nine international treaties on terrorism, ratified by Sri Lanka, also commits the offence of terrorism.” No one would contest that.
The New Zealand “carve-out” is found in sub-section (4): “The fact that a person engages in any protest, advocacy or dissent or engages in any strike, lockout or other industrial action, is not by itself a sufficient basis for inferring that such person (a) commits or attempts, abets, conspires, or prepares to commit the act with the intention or knowledge specified in subsection (1); or (b) is intending to cause or knowingly causes an outcome specified in subsection (2).”
While the Arsekularatne Committee has proposed, including the New Zealand “carve out”, it has ignored a crucial qualification in section 5(2) of that country’s Terrorism Suppression Act, that for an act to be considered a terrorist act, it must be carried out for one or more purposes that are or include advancing “an ideological, political, or religious cause”, with the intention of either intimidating a population or coercing or forcing a government or an international organisation to do or abstain from doing any act.
When the Committee was appointed, the Human Rights Commission of Sri Lanka opined that any new offence with respect to “terrorism” should contain a specific and narrow definition of terrorism, such as the following: “Any person who by the use of force or violence unlawfully targets the civilian population or a segment of the civilian population with the intent to spread fear among such population or segment thereof in furtherance of a political, ideological, or religious cause commits the offence of terrorism”.
The writer submits that, rather than bringing in the requirement of “a political, ideological, or religious cause”, it would be prudent to qualify proposed section 3(1) by the requirement that only acts that aim at creating “terror” or a “state of intense or overwhelming fear” or are carried out to achieve a goal of an individual or organisation that employs “terror” or a “state of intense or overwhelming fear” to attain its objectives should come under the definition of terrorism. Such a threshold is recognised internationally; no “carve out” is then needed, and the concerns of the Human Rights Commission would also be addressed.
by Dr. Jayampathy Wickramaratne
President’s Counsel
Features
ROCK meets REGGAE 2026
We generally have in our midst the famous JAYASRI twins, Rohitha and Rohan, who are based in Austria but make it a point to entertain their fans in Sri Lanka on a regular basis.
Well, rock and reggae fans get ready for a major happening on 28th February (Oops, a special day where I’m concerned!) as the much-awaited ROCK meets REGGAE event booms into action at the Nelum Pokuna outdoor theatre.
It was seven years ago, in 2019, that the last ROCK meets REGGAE concert was held in Colombo, and then the Covid scene cropped up.

Chitral Somapala with BLACK MAJESTY
This year’s event will feature our rock star Chitral Somapala with the Australian Rock+Metal band BLACK MAJESTY, and the reggae twins Rohitha and Rohan Jayalath with the original JAYASRI – the full band, with seven members from Vienna, Austria.
According to Rohitha, the JAYASRI outfit is enthusiastically looking forward to entertaining music lovers here with their brand of music.
Their playlist for 28th February will consist of the songs they do at festivals in Europe, as well as originals, and also English and Sinhala hits, and selected covers.
Says Rohitha: “We have put up a great team, here in Sri Lanka, to give this event an international setting and maintain high standards, and this will be a great experience for our Sri Lankan music lovers … not only for Rock and Reggae fans. Yes, there will be some opening acts, and many surprises, as well.”

Rohitha, Chitral and Rohan: Big scene at ROCK meets REGGAE
Rohitha and Rohan also conveyed their love and festive blessings to everyone in Sri Lanka, stating “This Christmas was different as our country faced a catastrophic situation and, indeed, it’s a great time to help and share the real love of Jesus Christ by helping the poor, the needy and the homeless people. Let’s RISE UP as a great nation in 2026.”
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