Sri Lanka: Mahaweli Water Security Investment Program - Tranche 2 Project (AIIB-000033)

  • Sri Lanka
Where the impacts of the investment may be experienced.
Financial Institutions
  • Asian Development Bank (ADB)
  • Asian Infrastructure Investment Bank (AIIB)
International, regional and national development finance institutions. Many of these banks have a public interest mission, such as poverty reduction.
Bank Risk Rating
Risk rating varies among banks and may refer only to the particular investment and not to the risk for the project as a whole. Projects marked 'U' have an 'Unknown' risk rating at the time of disclosure.
Democratic Socialist Republic of Sri Lanka
The holder of the loan, grant, or other investment.
  • Water and Sanitation
The service or industry focus of the investment. A project can have several sectors.
Investment Amount (USD)
$ 155.00 million
Value listed on project documents at time of disclosure. If necessary, converted to USD$. Please review updated project documents for more information.
Project Cost (USD)
$ 400.00 million
Value listed on project documents at time of disclosure. If necessary, converted to USD$. Please see updated project documentation for more information.
Bank Documents
Primary Source

Original disclosure @ AIIB website

Updated in EWS Jun 29, 2020

Disclosed by Bank May 4, 2017

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Project Description

The project was disclosed on the AIIB website on May 2017 and has since been taken down (as of January 2018).  The project status is unclear.

The proposed Tranche 2 of the Mahaweli Water Security Investment Program tentatively consists of the following components:

Component 1: Construction of Canals and Tunnels -- This component includes (i) construction of 28 km tunnels (out of which 20 km tunnel using tunnel boring machine and eight km tunnel using New Austrian Tunneling Method); (ii) construction of nine km canal works including eight km tunnels using New Austrian Tunneling Method; and (iii) construction of approximately 14 km canal works, including heightening the level crossings of three existing dams.

Component 2: Construction Supervision --This component includes the construction supervision services for Tranche 2 civil contract packages by the Program Management, Design and Supervision Consultant (PMDSC).

Component 3: Project Management --This component includes Tranche 2 related project management activities to be conducted by the Program Management Unit (PMU).

Component 4: Institutional Strengthening --This component includes the consulting services, strengthening institutions with integrated water resources management (SIWRM), which will recommend programs for modernizing policy and governance frameworks, and institutional strengthening to improve national water resources planning and management, and operational and maintenance procedures.

Investment Description
  • Asian Development Bank (ADB)
  • Asian Infrastructure Investment Bank (AIIB)
Contact Information

Asian Infrastructure Investment Bank (AIIB)
Mr. Chuanzhi Su
Project Team Leader/Senior Investment Operations Specialist
Tel: +86 10 8358 0176

Asian Development Bank (ADB)
Mr. Lance Gore
Senior Water Resources Specialist
Tel: +632 632 4444

Mr. Priyantha Ratnayake
Director General, Department of External Resources, Ministry of National Policies and Economic Affairs
Tel: +94 11 2484 693, +94 11 2434 876 ext 2206

Implementation Agency
Mr. N.A. Sisira Kumara
Additional Secretary, Ministry of Mahaweli Development and Environment
Tel: +94 11 2675 811



The AIIB has established the Accountability Mechanism for Project-Affected People (PPM).  The PPM provides “an opportunity for an independent and impartial review of submissions from Project-affected people who believe they have been or are likely to be adversely affected by AIIB’s failure to implement the ESP in situations when their concerns cannot be addressed satisfactorily through Project level GRMs or AIIB Management processes.” Two or more project-affected people can file a complaint.  Under the current AIIB policy, when the bank co-finances a project with another development bank, it may apply the other bank's standards. You can refer to the Project Summary Information document to find out which standards apply.  You can learn more about the PPM and how to file a complaint at:

The complaint submission form can be accessed in Arabic, Bahasa Indonesia, Bengali, Chinese, English, Tagalog, Hindi, Nepali, Russian, Turkish, or Urdu. The submission form can be found at: