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Flood protection of Colombo Metropolitan Region-An alternative scheme

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By Dr Janaka Ratnasiri

I thank Eng. Anton Nanayakkara (AN)’s write-up in The Island of 28.07.2020, responding to my article on Flood Protection of Colombo Metropolitan Region which appeared in The Island of 21.07.2020. The main purpose of my article was to highlight the fact that the government after getting Japanese Consultants to formulate a Master Plan for flood protection of Colombo Metro Region at great cost, what is being implemented as a priority project is only a clean-up of the Weras Ganga basin, making a mockery of the word Master Plan. This area is totally outside the Greater Colombo area with no impact on its flooding. AN has failed to comment on this issue.

METRO COLOMBO URBAN DEVELOPMENT

PROJECT

With the failure of the Master Plan to address the flood situation within the city and its suburbs, Sri Lanka Land Development Corporation (SLLDC) has taken the initiative to develop a separate project titled Metro Colombo Urban Development Project (MCUDP) to address this issue. This project expected to be executed during 2012 – 2020 is estimated to cost USD 104 Million (SLLDC Website). It will address flood mitigation in areas covered by the Colombo Municipal Council, Sri Jayewardenapura, Battaramulla, Rajagiriya, Madiwela and Dehiwala. Activities described under “Improvements to existing drainage systems” in my previous article of July 21st were in fact carried out by SLLDC under this project.

COMMENTS ON ENG. NANAYAKKARA’S

RESPONSES

In his response, AN has made certain remarks on some statements appearing in my article and questions their validity. What I have said are totally based on material extracted from other sources including the JICA reports and the website of the SLLDC and not my own suggestions. It appears that AN seems to be unaware of the latest situation in this regard, and hence they need clarification. My comments are given against each of AN’s statements which are given below using material extracted from SLLDC website – Special Projects pages.

1. “The Madiwela East Diversion (MED), remaining dry most of the time, as mentioned, may be due to its wrong location, too far upstream of the Kelani Ganga about 10 miles above the historic Nagalagam Street outfall”.

COMMENT: MED was established by constructing a new canal from the Thalangama Tank up to the origin of the existing natural canal flowing through Malabe paddy fields parallel to Chandrika Kumarathunga Mawatha. It has its natural outfall at Ambatale. The topography of the area does not permit shifting of this outfall further downstream.

2. “Even during floods of the Kelani Ganga, this outfall No 1 (See plan) has to be closed, long before Nagalagam Street outfall closing at +5.00 ft MSL, the accepted minor flood level for Colombo, negating the very purpose for which this canal was built”.

COMMENT: The SLLDC is currently building a pumping station at Ambatale across the MED canal to pump water to the river when its water level rises during heavy rainfall, at a cost of USD 5.85 Million and LKR 1,181 Million (SLLRDC website).

3. “The learned doctor has not noticed the extent to which the Thalangama Tank had silted up, reducing the capacity to retain flood water (about 50 ac.ft) entering the Parliament lake”.

COMMENT: In a project carried out by the SLLDC during 2016 – 2018, the tank was dredged to increase its water holding capacity and remove unnecessary growth on the tank bund, at a cost of LKR 107 million. In any case, I wonder how even a professional hydrologist could notice the extent of silting of the tank just by looking at it.

4. “This gate was constructed at ID’s flood control premises to pump water from the Kelani Ganga to the Beira Lake, for the purpose of cleaning the lake. The project ceased soon after the flood. Strangely, no inquiry was made. It was all swept under the carpet”.

COMMENT: According the SLLDC website, it has built three gates across Kolonnawa Canal, Heen Ela and St. Sebastian canal at the crossing of New Kelani Bridge Road to isolate the canal system enabling water to be pumped back into the canal system from the river by operating the pumps installed at St. Sebastian outfall in the reverse direction. This work to be carried out during 2018 – 2020 is estimated to cost of USD 5.85 million and LKR 1181 million. So, it is not a case of sweeping under the carpet.

5. “Dr. R’s reference to the Beira Lake, too, needs some clarifications. The Beira Lake is not a natural lake. It is an artificial lake also kept at an artificial level, of 6.00 ft above mean sea level, by the Beira Spillway”.

COMMENT: A pumping station is being built across St. Sebastian Canal at Maradana for pumping water from the canal to Beira Lake during periods of high rainfall in Colombo. This work to be carried out during 2019 -2020 is estimated to cost of USD 5.93 million and LKR 165 million. (See also the last paragraph).

6. “Ignoring many other references, contained in Dr R’s article, let me now say a few words about narrowing of bridges, mentioned in it. This is not a matter of life and death, as made out to be. Any hydrologist will agree that within the narrowed section, the velocity will increase to make up for the constriction”.

COMMENT: Widening of the canals and removing bottleneck were not proposals that I made, but what are actually executed by SLLDC as described in its website. Kolonnawa Canal Diversion Stage III says “the canal has become very narrow at certain sections due to encroachment. Some resettlement and land acquisitions are undertaken to remove bottlenecks”. This work to be carried out during 2018-2020 will cost of LKR 1,000 million. Diversion Stage IV also refers to removing two bottlenecks near the outfall.

7. “If, as proposed, the southern diversion takes place, such a canal would become a “trans-basin diversion” let alone the new outfall getting pushed about 20 miles, down south, to Panadura; not to mention reversing the natural flow direction, within the Madiwela catchment, and aggravating the already existing problems, within Bolgoda”.

COMMENT: The proposed diversion is not the first trans-basin diversion in Sri Lanka. Under the Mahaweli Scheme, there are trans-basin diversions. There are even such diversions among ancient works including diversion of Kala Oya to Malwathu Oya basin and Amban Ganga to Yan Oys basin. More recently, Kalu Ganga (Matale) was diverted to Amban Ganga basin under Moragahakanda Project, Uma Oya is being diverted to Kirindi Oya basin. It is also proposed to divert Gin Ganga to Nilwala basin. If Madiwela South diversion is the only practical option available to protect Sri Jayewardenapura area from flooding, it should be pursued after addressing whatever environmental issues that it may cause.

8. “The proposals (which) I have been making for more than 30 years, do not go against nature, no damage to environment by digging new canals, no underground tunnels of large diameter, no widening of bridges, and no pumping”.

COMMENT: If AN’s proposal with no digging of new canals, no tunneling or no widening of canals had merit, why wasn’t it accepted by authorities for implementation all these 30 years?

OPTION WITH NO DIGGING, TUNNELING AND PUMPING

As mentioned in my previous article, the Diyawannawa Lake has two draining outlets, one via Kolonnawa Canal and the other via Wellawatta Canal. The Kolonnawa Canal branches into three canals with outfalls to the Kelani River at Grandpass, Kotuwila and Ambatale which need pumping during heavy rainfall days. Hence, only the Wellawatta Canal is available for draining direct into the sea without resorting to digging new canals, or building tunnels or installing pumping stations. Under the MCUDP project, the stretch of Wellawatta Canal beyond the Galle Road was dredged, widened and the outfall improved at a cost of LKR 111.6 Million. It is to be seen whether this outlet together with the improved outfalls to Kelani River could handle the draining of Diyawannawa Lake during an extreme rainfall event.

ALTERNATIVE PROPOSAL TO DRAIN FLOOD WATER

AN has expressed his reservations about using the Beira Lake as an outfall for flood water as the level of the spillway cannot be adjusted. Though a sum of LKR 1,350 million is spent on building a pumping station at Maradana to divert flood water coming along the Dematagoda Canal into the Beira Lake and then to the sea, there is a doubt as to whether this diversion will work. If it works, it will take flood water from Kotte diverted to St. Sebastian Canal first to the Floating Market and then to the Beira Lake before the water enters the spillway near Galle Face. This will invariably raise the water level of Beira Lake which is presently maintained at 1.8 m above mean sea level to prevent buildings constructed on wooden piles along the lake from collapsing. However, according to an environment screening study on a project for rehabilitation of the Beira Lake carried out by Moratuwa University in 2011, any changes to the water level of the Beira lake can have an adverse effect on the stability of these foundations.

There is however, another alternative option available to improve the draining of Kotte flood water flowing along Dematagoda Canal into the river without posing any of these problems. That is by diverting water flowing in Dematagoda Canal direct into Kiththamphuwa Ela (KE) before it joins with St. Sebastian Canal, by constructing a new canal branching off from the Dematagoda Canal just before it crosses the railway line. This canal could run parallel to the railway line and join with the KE where it makes a U-turn near Welewatta Road. This link canal is only about 0.5 km long and this area comes mostly under railway reservation. The stretch of KE which runs parallel to the railway line up to the river outfall is being widened and dredged under the Kolonnawa Canal Diversion Stage IV at a cost of LKR 1,432 Million. Hence, construction of this new link canal could be undertaken as a part of this project.

The distance to the existing river outfall along St. Sebastian Canal from this branching point is 3.0 km while the distance to the Beira Lake outfall via St. Sebastian Canal in the opposite direction 5.2 km, whereas the distance to the river outfall along the proposed link canal and KE is only 1.7 km. Further, the present St. Sebastian Canal route has six road crossings and several bends while the route via Beira Lake has eight road crossings. Also, the stretch of St. Sebastian Canal behind the Technical College passes through a narrow passage cut through a hill with no room for widening. On the other hand, the proposed route via the link canal and KE is short and straight with only one road crossing at Orugodawatta and is a better option to drain the Kotte flood water into Kelani River, than the proposed scheme via Beira Lake.

CONCLUSION

The SLLDC has already executed several projects worth LKR 1,165 Million with World Bank funding to improve the drainage in several canals in the city and its suburbs. Several more projects estimated to cost over LKR 4,500 Million and USD 44 Million are on-going. This includes a project to take flood water from Kotte all the way to Beira Lake and then to spillway at Galle Face for discharging into the sea by reversing the flow in St. Sebastian Canal. However, this does not appear sensible even to a layman like myself. It is more sensible to drop this proposal and instead develop the link canal to take flood water flowing in Dematagoda Canal direct to KE stretch running parallel to the railway line and thereafter to the Kelani river. The pumping equipment intended for diverting flood water via Beira Lake could be installed at the outfall of KE near Kalu Palama, enabling it to remove the flood water during heavy rainfall.

 



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Sheer rise of Realpolitik making the world see the brink

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A combined US-Israel attack on Iran.(BBC)

The recent humanly costly torpedoing of an Iranian naval vessel in Sri Lanka’s Exclusive Economic Zone by a US submarine has raised a number of issues of great importance to international political discourse and law that call for elucidation. It is best that enlightened commentary is brought to bear in such discussions because at present misleading and uninformed speculation on questions arising from the incident are being aired by particularly jingoistic politicians of Sri Lanka’s South which could prove deleterious.

As matters stand, there seems to be no credible evidence that the Indian state was aware of the impending torpedoing of the Iranian vessel but these acerbic-tongued politicians of Sri Lanka’s South would have the local public believe that the tragedy was triggered with India’s connivance. Likewise, India is accused of ‘embroiling’ Sri Lanka in the incident on account of seemingly having prior knowledge of it and not warning Sri Lanka about the impending disaster.

It is plain that a process is once again afoot to raise anti-India hysteria in Sri Lanka. An obligation is cast on the Sri Lankan government to ensure that incendiary speculation of the above kind is defeated and India-Sri Lanka relations are prevented from being in any way harmed. Proactive measures are needed by the Sri Lankan government and well meaning quarters to ensure that public discourse in such matters have a factual and rational basis. ‘Knowledge gaps’ could prove hazardous.

Meanwhile, there could be no doubt that Sri Lanka’s sovereignty was violated by the US because the sinking of the Iranian vessel took place in Sri Lanka’s Exclusive Economic Zone. While there is no international decrying of the incident, and this is to be regretted, Sri Lanka’s helplessness and small player status would enable the US to ‘get away with it’.

Could anything be done by the international community to hold the US to account over the act of lawlessness in question? None is the answer at present. This is because in the current ‘Global Disorder’ major powers could commit the gravest international irregularities with impunity. As the threadbare cliché declares, ‘Might is Right’….. or so it seems.

Unfortunately, the UN could only merely verbally denounce any violations of International Law by the world’s foremost powers. It cannot use countervailing force against violators of the law, for example, on account of the divided nature of the UN Security Council, whose permanent members have shown incapability of seeing eye-to-eye on grave matters relating to International Law and order over the decades.

The foregoing considerations could force the conclusion on uncritical sections that Political Realism or Realpolitik has won out in the end. A basic premise of the school of thought known as Political Realism is that power or force wielded by states and international actors determine the shape, direction and substance of international relations. This school stands in marked contrast to political idealists who essentially proclaim that moral norms and values determine the nature of local and international politics.

While, British political scientist Thomas Hobbes, for instance, was a proponent of Political Realism, political idealism has its roots in the teachings of Socrates, Plato and latterly Friedrich Hegel of Germany, to name just few such notables.

On the face of it, therefore, there is no getting way from the conclusion that coercive force is the deciding factor in international politics. If this were not so, US President Donald Trump in collaboration with Israeli Rightist Premier Benjamin Natanyahu could not have wielded the ‘big stick’, so to speak, on Iran, killed its Supreme Head of State, terrorized the Iranian public and gone ‘scot-free’. That is, currently, the US’ impunity seems to be limitless.

Moreover, the evidence is that the Western bloc is reuniting in the face of Iran’s threats to stymie the flow of oil from West Asia to the rest of the world. The recent G7 summit witnessed a coming together of the foremost powers of the global North to ensure that the West does not suffer grave negative consequences from any future blocking of western oil supplies.

Meanwhile, Israel is having a ‘free run’ of the Middle East, so to speak, picking out perceived adversarial powers, such as Lebanon, and militarily neutralizing them; once again with impunity. On the other hand, Iran has been bringing under assault, with no questions asked, Gulf states that are seen as allying with the US and Israel. West Asia is facing a compounded crisis and International Law seems to be helplessly silent.

Wittingly or unwittingly, matters at the heart of International Law and peace are being obfuscated by some pro-Trump administration commentators meanwhile. For example, retired US Navy Captain Brent Sadler has cited Article 51 of the UN Charter, which provides for the right to self or collective self-defence of UN member states in the face of armed attacks, as justifying the US sinking of the Iranian vessel (See page 2 of The Island of March 10, 2026). But the Article makes it clear that such measures could be resorted to by UN members only ‘ if an armed attack occurs’ against them and under no other circumstances. But no such thing happened in the incident in question and the US acted under a sheer threat perception.

Clearly, the US has violated the Article through its action and has once again demonstrated its tendency to arbitrarily use military might. The general drift of Sadler’s thinking is that in the face of pressing national priorities, obligations of a state under International Law could be side-stepped. This is a sure recipe for international anarchy because in such a policy environment states could pursue their national interests, irrespective of their merits, disregarding in the process their obligations towards the international community.

Moreover, Article 51 repeatedly reiterates the authority of the UN Security Council and the obligation of those states that act in self-defence to report to the Council and be guided by it. Sadler, therefore, could be said to have cited the Article very selectively, whereas, right along member states’ commitments to the UNSC are stressed.

However, it is beyond doubt that international anarchy has strengthened its grip over the world. While the US set destabilizing precedents after the crumbling of the Cold War that paved the way for the current anarchic situation, Russia further aggravated these degenerative trends through its invasion of Ukraine. Stepping back from anarchy has thus emerged as the prime challenge for the world community.

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A Tribute to Professor H. L. Seneviratne – Part II

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A Living Legend of the Peradeniya Tradition:

(First part of this article appeared yesterday)

H.L. Seneviratne’s tenure at the University of Virginia was marked not only by his ethnographic rigour but also by his profound dedication to the preservation and study of South Asian film culture. Recognising that cinema is often the most vital expression of a society’s aspirations and anxieties, he played a central role in curating what is now one of the most significant Indian film collections in the United States. His approach to curation was never merely archival; it was informed by his anthropological work, treating films as primary texts for understanding the ideological shifts within the subcontinent

The collection he helped build at the UVA Library, particularly within the Clemons Library holdings, serves as a comprehensive survey of the Indian ‘Parallel Cinema’ movement and the works of legendary auteurs. This includes the filmographies of directors such as Satyajit Ray, whose nuanced portrayals of the Indian middle class and rural poverty provided a cinematic counterpart to H.L. Seneviratne’s own academic interests in social change. By prioritising the works of figures such as Mrinal Sen and Ritwik Ghatak, H.L. Seneviratne ensured that students and scholars had access to films that wrestled with the complex legacies of colonialism, partition, and the struggle for national identity.

These films represent the ‘Parallel Cinema’ movement of West Bengal rather than the commercial Hindi industry of Mumbai. H.L. Seneviratne’s focus initially cantered on those world-renowned Bengali masters; it eventually broadened to encompass the distinct cinematic languages of the South. These films refer to the specific masterpieces from the Malayalam and Tamil regions—such as the meditative realism of Adoor Gopalakrishnan or the stylistic innovations of Mani Ratnam—which are culturally and linguistically distinct from the Bengali works. Essentially, H.L. Seneviratne is moving from the specific (Bengal) to the panoramic, ensuring that the curatorial work of H.L. Seneviratne was not just a ‘Greatest Hits of Kolkata’ but a truly national representation of Indian artistry. These films were selected for their ability to articulate internal critiques of Indian society, often focusing on issues of caste, gender, and the impact of modernisation on traditional life. Through this collection, H.L. Seneviratne positioned cinema as a tool for exposing the social dynamics that often remain hidden in traditional historical records, much like the hidden political rituals he uncovered in his early research.

Beyond the films themselves, H.L. Seneviratne integrated these visual resources into his curriculum, fostering a generation of scholars who understood the power of the image in South Asian politics. He frequently used these screenings to illustrate the conflation of past and present, showing how modern cinema often reworks ancient myths to serve contemporary political agendas. His legacy at the University of Virginia therefore encompasses both a rigorous body of writing that deconstructed the work of the kings and a vivid archive of films that continues to document the work of culture in a rapidly changing world.

In his lectures on Sri Lankan cinema, H.L. Seneviratne has frequently championed Lester James Peries as the ‘father of authentic Sinhala cinema.’ He views Peries’s 1956 film Rekava (Line of Destiny) as a watershed moment that liberated the local industry from the formulaic influence of South Indian commercial films. For H.L. Seneviratne, Peries was not just a filmmaker but an ethnographer of the screen. He often points to Peries’s ability to capture the subtle rhythms of rural life and the decline of the feudal elite, most notably in his masterpiece Gamperaliya, as a visual parallel to his own research into the transformation of traditional authority. H.L. Seneviratne argues that Peries provided a realistic way of seeing for the nation, one that eschewed nationalist caricature in favour of complex human emotion.

However, H.L. Seneviratne’s praise for Peries is often tempered by a critique of the broader visual nationalism that followed. He has expressed concern that later filmmakers sometimes misappropriated Peries’s indigenous style to promote a narrow, majoritarian view of history. In his view, while Peries opened the door to an authentic Sri Lankan identity, the state and subsequent commercial interests often used that same door to usher in a simplified, heroic past. This critique aligns with his broader academic stance against the rationalization of culture for political ends.

Constitutional Governance:

H.L. Seneviratne’s support for independent commissions is best described as a hopeful pragmatism; he views them as essential, albeit fragile, instruments for diffusing the hyper-concentration of executive power. Writing to Colombo Page and several news tabloids, H.L. Seneviratne addresses the democratic deficit by creating a structural buffer between partisan interests and public institutions, theoretically ensuring that the judiciary, police, and civil service operate on merit rather than political whim. However, he remains deeply aware that these commissions are not a panacea and are indeed inherently susceptible to the ‘politics of patronage.’

In cultures where power is traditionally exercised through personal loyalties, there is a constant risk that these bodies will be subverted through the appointment of hidden partisans or rendered toothless through administrative sabotage. Thus, while H.L. Seneviratne advocates for them as a means to transition a state from a patron-client culture to a rule-of-law framework, his anthropological lens suggests that the success of such commissions depends less on the law itself and more on the sustained pressure of civil society to keep them honest.

Whether discussing the nuances of a film’s narrative or the complexities of a constitutional clause, H.L. Seneviratne’s approach remains consistent in its focus on the spirit behind the institution. He maintains that a healthy democracy requires more than just the right laws or the right symbols; it requires a citizenry and a clergy capable of critical self-reflection. His career at the University of Virginia and his continued engagement with Sri Lankan public life stand as a testament to the idea that the intellectual’s work is never truly finished until the work of the people is fully realized.

In the context of H.L. Seneviratne’s philosophy, as discussed in his work of the kings ‘the work of the people’ is far more than a populist catchphrase; it represents the practical application of critical consciousness within a democracy. Rather than defining ‘work’ as labour or voting, H.L. Seneviratne views it as the transition of a population from passive subjects to an active, self-reflective citizenry. This means that a democracy is only truly ‘realized’ when the public possesses the intellectual autonomy to look beyond the ‘right laws’ or ‘right symbols’ and instead engage with the underlying spirit of their institutions. For H.L. Seneviratne, this work is specifically tied to the ability of the people—including influential groups like the clergy—to perform rigorous self-critique, ensuring that they are not merely following tradition or authority, but are actively sustaining the ethical health of the nation. It is a perpetual process of civic education and moral vigilance that moves a society from the ‘paper’ democracy of a constitution to a lived reality of accountability and insight.

This decline of the ‘intellectual monk’ had a catastrophic impact on the political landscape, particularly surrounding the watershed moment of 1956 and the ‘Sinhala Only’ movement. H.L. Seneviratne posits that when the Sangha exchanged their role as impartial moral advisors for that of political kingmakers, they became the primary obstacle to ethnic reconciliation. He suggests that politicians, fearing the immense grassroots influence of the monks, entered a state of monachophobia, where they felt unable to propose pluralistic or fair policies toward minority communities for fear of being branded as traitors to the faith. In H.L. Seneviratne’s framework, the monk’s transition from a social servant to a political vanguard effectively trapped the state in a cycle of majoritarian nationalism from which it has yet to escape.

H.L. Seneviratne’s work serves as a multifaceted critique of the modern Sri Lankan state and its cultural foundations. Whether he is dissecting what he sees as the betrayal of the monastic ideal or celebrating the humanistic vision of an Indian filmmaker, his goal remains the same: to champion a world where intellect and compassion are not sacrificed on the altar of political power. His legacy at the University of Virginia and his continued voice in Sri Lankan discourse remind us that the work of the intellectual is to provide a moral compass even, indeed especially, when the nation has lost its way.

(Concluded)

by Professor
M. W. Amarasiri de Silva

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Musical journey of Nilanka Anjalee …

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Nilanka Anjalee Wickramasinghe is, in fact, a reputed doctor, but the plus factor is that she has an awesome singing voice, as well., which stands as a reminder that music and intellect can harmonise beautifully.

Well, our spotlight today is on ‘Nilanka – the Singer,’ and not ‘Nilanka – the Singing Doctor!’

Nilanka’s journey in music began at an early age, nurtured by an ear finely tuned to nuance and a heart that sought expression beyond words.

Under the tutelage of her singing teachers, she went on to achieve the A.T.C.L. Diploma in Piano and the L.T.C.L. Diploma in Vocals from Trinity College, London – qualifications recognised internationally for their rigor and artistry.

These achievements formally certified her as a teacher and performer in both opera singing and piano music, while her Performer’s Certificate for singing attested to her flair on stage.

Nilanka believes that music must move the listener, not merely impress them, emphasising that “technique is a language, but emotion is the message,” and that conviction shines through in her stage presence –serene yet powerful, intimate yet commanding.

Her YouTube channel, Facebook and Instagram pages, “Nilanka Anjalee,” have become a window into her evolving artistry.

Here, audiences find not only her elegant renditions of local and international pieces but also her original songs, which reveal a reflective and modern voice with a timeless sensibility.

Each performance – whether a haunting ballad or a jubilant interpretation of a traditional hymn – carries her signature blend of technical finesse and emotional depth.

Beyond the concert hall and digital stage, Nilanka’s music is driven by a deep commitment to meaning.

Her work often reflects her belief in empathy, inner balance, and the beauty of simplicity—values that give her performances their quiet strength.

She says she continues to collaborate with musicians across genres, composing and performing pieces that reflect both her classical discipline and her contemporary outlook.

Widely acclaimed for her ability to adapt to both formal and modern stages, with equal grace, and with her growing repertoire, Nilanka has become a sought-after soloist at concerts and special events,

For those who seek to experience her artistry, firsthand, Nilanka Anjalee says she can be contacted for live performances and collaborations through her official channels.

Her voice – refined, resonant, and resolutely her own – reminds us that music, at its core, is not about perfection, but truth.

Dr. Nilanka Anjalee Wickramasinghe also indicated that her newest single, an original, titled ‘Koloba Ahasa Yata,’ with lyrics, melody and singing all done by her, is scheduled for release this month (March)

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