India: Climate Adaptation in Vennar Subbasin in Cauvery Delta Project
ADB and the Government of India are working together to reduce flood risks and improve the distribution of water for irrigation in the Cauvery Delta of the state of Tamil Nadu. The Climate Adaptation in Vennar Subbasin in Cauvery Delta Project aims to protect coastal districts from cyclones and flooding that is being made worse by climate change. The project is upgrading infrastructure and resectioning and strengthening embankments of six main channels totaling 235 kilometers. More robust flood control structures will reduce the frequency and impact of flooding. Thirteen pump stations are also being upgraded. The management systems of the Water Resources Department will also be strengthened, with greater participation by stakeholders in the planning and delivery of water services, better assessment of water resources, development of a decision support system, and training of officers.
South Asia Department
Request for information
- Agriculture, natural resources and rural development
|Project Name||Climate Adaptation in Vennar Subbasin in Cauvery Delta Project|
|Project Type / Modality of Assistance||Loan
|Source of Funding / Amount||
|Strategic Agendas||Environmentally sustainable growth
Inclusive economic growth
|Drivers of Change||Gender Equity and Mainstreaming
Governance and capacity development
|Sector / Subsector||
Agriculture, natural resources and rural development / Agricultural policy, institutional and capacity development - Irrigation
|Gender Equity and Mainstreaming||Some gender elements|
|Description||ADB and the Government of India are working together to reduce flood risks and improve the distribution of water for irrigation in the Cauvery Delta of the state of Tamil Nadu. The Climate Adaptation in Vennar Subbasin in Cauvery Delta Project aims to protect coastal districts from cyclones and flooding that is being made worse by climate change. The project is upgrading infrastructure and resectioning and strengthening embankments of six main channels totaling 235 kilometers. More robust flood control structures will reduce the frequency and impact of flooding. Thirteen pump stations are also being upgraded. The management systems of the Water Resources Department will also be strengthened, with greater participation by stakeholders in the planning and delivery of water services, better assessment of water resources, development of a decision support system, and training of officers.|
|Project Rationale and Linkage to Country/Regional Strategy||
Tamil Nadu is one of the most water-stressed states in India, with a per capita availability of water resources of 900 cubic meters per year (m3/year) compared with a national average of 1,545 m3/year and a water stress threshold of 1,700 m3/year. About 90% of surface water of the Cauvery river basin is used in irrigation. The irrigated area is approximately 640,000 ha of which 564,000 ha is in the Cauvery delta. The delta's population of around 4.8 million heavily relies on farming and fishing. Communities in the Cauvery delta are vulnerable to a number of water resources development issues that impact livelihoods, agricultural productivity, and food security.
The sharing of Cauvery waters among the states has been disputed since the 1890s, and in February 2013, the Supreme Court of India upheld the water allocation decision that the Cauvery Waters Dispute Tribunal had made in 2007. Despite high levels of water stress, recurrent flooding, and increasing risks of climate change, the long-standing dispute prevented investments toward improving the irrigation and drainage systems in the delta beyond essential maintenance. Therefore, the irrigation and drainage systems are dilapidated and unable to effectively convey irrigation and floodwaters. This led to inequitable distribution of irrigation water, with upstream farmers benefiting, and increased flooding due to overtopping or breaching of embankments. Some of the tail-end areas no longer have access to irrigation water. Malfunctioning tail-end regulators led to seawater ingress along channels. In the lower reaches of the delta, the availability of fresh groundwater is limited as a result of variable recharge and saline aquifers.
(i) Coastal districts are protected from cyclones and flooding exacerbated by climate change (Vision Tamil Nadu, 2023)
(ii) Innovative and inclusive economic growth, including agricultural growth, in Tamil Nadu is accelerated (Twelfth Five Year Plan, 2012 2017)
|Description of Outcome||Climate-resilient water management in the Vennar System improved|
|Progress Toward Outcome||Project implementation consultants' services extended to 31 December 2021 to support the project until project completion.|
|Description of Project Outputs||
Flood risk management and irrigation infrastructure upgraded
Improved water and flood risk management systems established
|Status of Implementation Progress (Outputs, Activities, and Issues)||As of Q3/2021, physical progress of CW-1 is 88%, CW-2-82%, CW-3-68%, CW-4, CW-5 and CW-6 have achieved 100%, Pumping schemes also achieved 100%. DSS package was awarded on 16 July 2021. The loan was closed on 30 June 2021.|
|Geographical Location||Tamil Nadu|
|Summary of Environmental and Social Aspects|
|Environmental Aspects||An initial environmental examination was prepared. Key negative impacts expected are typical to those related to construction, such as noise, dust, impacts on vegetation on embankments, increased turbidity due to desilting operations and impacts associated with disposal of dredged material. Appropriate mitigation measures have been identified and included in the environmental management plan. Stakeholders were consulted during project design and will continue to be consulted during implementation. In 2016, Tamil Nadu State Coastal Zone Management Authority issued coastal zone regulation clearance for the project. Before the end of project implementation, around 118,000 tree seedlings will be planted to replace the trees removed due to the project.|
|Involuntary Resettlement||A resettlement plan is being implemented. All works and improvements to the canal and irrigation system will be within the available right-of-way. About 1893 squatters living along the embankment will receive compensation to relocate or will be offered a house in another area, of this 1120 households have opted for an alternate house and the remaining 773 households opted for cash in lieu of house or to compensate the loss of non-residential structures. In addition to the impacts on the households, the project will affect 65 common property resources. Grievance redress committees have been established in the districts of Thiruvarur, Nagapattinam, and Thiruthuraipoondi, headed by the district collector.|
|Indigenous Peoples||The due diligence found that there are no indigenous peoples, as defined by ADB's Safeguard Policy Statement (2009), in the project area.|
|Stakeholder Communication, Participation, and Consultation|
|During Project Design||During project preparation, extensive consultations were held with project stakeholders and affected persons.|
|During Project Implementation||Channel Stakeholder Groups (CSG) have been established to discuss project progress and agree on the effective use of water, and the first meeting for Nagapattinam district was held in Q4 2018. CSGs established on 5 July 2018 and three meetings conducted for rivers Vellaiyar, Harichandranathi and Vedharanayam Canal. One meeting for Adappar, Pandavaiyar and Valavanar. Field Implementation Coordination Committees are established in each project district. The project's communications plan outlines other communications activities and may be found in Appendix F of the Project Administration Manual.|
|Consulting Services||Project implementation consultants will be engaged as individuals to support the project management and project implementation units. An NGO will be engaged to support the implementation of the resettlement plan. A firm will be recruited to design a decision support system and conduct a feasibility study and detailed design for a follow-on project.|
|Procurement||The procurement plan calls for 6 civil works packages and one package for the pump stations, all using national competitive bidding procedures. Field hydro-meteorological and office equipment will also be purchased.|
|Responsible ADB Officer||Goyal, Vikas|
|Responsible ADB Department||South Asia Department|
|Responsible ADB Division||India Resident Mission|
Water Resources Department, Gov't of Tamil Nadu
Chepauk, Chennai 600 005
Tamil Nadu, India
|Concept Clearance||20 Sep 2012|
|Fact Finding||21 Apr 2015 to 28 Apr 2015|
|MRM||23 Feb 2016|
|Approval||07 Jun 2016|
|Last Review Mission||-|
|Last PDS Update||17 Dec 2021|
|Approval||Signing Date||Effectivity Date||Closing|
|07 Jun 2016||14 Jul 2016||02 Sep 2016||30 Jun 2021||-||-|
|Financing Plan||Loan Utilization|
|Total (Amount in US$ million)||Date||ADB||Others||Net Percentage|
|Project Cost||144.00||Cumulative Contract Awards|
|ADB||100.00||14 Jan 2022||96.70||0.00||100%|
|Cofinancing||0.00||14 Jan 2022||82.31||0.00||85%|
|Status of Covenants|
Project Data Sheets (PDS) contain summary information on the project or program. Because the PDS is a work in progress, some information may not be included in its initial version but will be added as it becomes available. Information about proposed projects is tentative and indicative.
The Access to Information Policy (AIP) recognizes that transparency and accountability are essential to development effectiveness. It establishes the disclosure requirements for documents and information ADB produces or requires to be produced.
The Accountability Mechanism provides a forum where people adversely affected by ADB-assisted projects can voice and seek solutions to their problems and report alleged noncompliance of ADB's operational policies and procedures.
In preparing any country program or strategy, financing any project, or by making any designation of, or reference to, a particular territory or geographic area in this document, the Asian Development Bank does not intend to make any judgments as to the legal or other status of any territory or area.
Safeguard Documents See also: Safeguards
Safeguard documents provided at the time of project/facility approval may also be found in the list of linked documents provided with the Report and Recommendation of the President.
Evaluation Documents See also: Independent Evaluation
None currently available.
None currently available.
The Access to Information Policy (AIP) establishes the disclosure requirements for documents and information ADB produces or requires to be produced in its operations to facilitate stakeholder participation in ADB's decision-making. For more information, refer to the Safeguard Policy Statement, Operations Manual F1, and Operations Manual L3.
Requests for information may also be directed to the InfoUnit.
ADB Loan To Help Tackle Climate Threats In Tamil Nadu’s Cauvery DeltaADB and the Government of India signed a $100 million loan agreement to strengthen a key irrigation and drainage system and improve water management in the Vennar subbasin of the Cauvery delta in Tamil Nadu.
ADB Loan to Help Tackle Water Stress, Climate Threats in India’s Cauvery DeltaADB has approved a $100 million loan to strengthen a key irrigation system and improve water management in the Vennar subbasin of the Cauvery delta in Tamil Nadu—one of India’s most water-stressed states.
|Tender Title||Type||Status||Posting Date||Deadline|
|ENVIRONMENT SPECIALIST||Individual - Consulting||Closed||04 Jun 2020||15 Jun 2020|
|ASSISTANT RESIDENT ENGINEER-2||Individual - Consulting||Closed||06 Jul 2019||15 Jul 2019|
|ASSISTANT RESIDENT ENGINEER-1||Individual - Consulting||Closed||06 Jul 2019||15 Jul 2019|
|CONTRACT MANAGEMENT AND PROCUREMENT SPECIALIST||Individual - Consulting||Closed||28 Jun 2019||04 Jul 2019|
|DEPUTY TEAM LEADER||Individual - Consulting||Closed||28 Jun 2019||04 Jul 2019|
|COMMUNICATION SPECIALIST||Individual - Consulting||Closed||22 Jan 2018||29 Jan 2018|
|MIS Programmer||Individual - Consulting||Closed||01 Jun 2017||06 Jul 2017|
|Topography Survey - Vennar||Firm - Consulting||Closed||01 Jun 2017||15 Jul 2017|
|Topography Survey - Cauvery||Firm - Consulting||Closed||01 Jun 2017||15 Jul 2017|
|Project Technical Advisory Consultants (PTAC)||Firm - Consulting||Closed||09 Mar 2017||09 May 2017|
|IND: Climate Adaptation in Vennar Sub-basin in Cauvery Delta Project||Advance Notice||Archived||20 May 2015|
|Contract Title||Approval Number||Contract Date||Contractor | Address||Executing Agency||Total Contract Amount (US$)||Contract Amount Financed by ADB (US$)|
|CS-8 NGO FOR RESETTLEMENT PLAN IMPLEMENTATION (2ND CONTRACT)||Loan 3394||12 Apr 2019||HEALTH ENVIRONMENT AGRICULTURE AND VILLAGE | 99/9A TELC STREET OPP. GOVERNMENT KALLAR USILAMPATTI, MADURAI DISTRICT,TAMIL NADU INDIA||Water Resources Department, Gov't of Tamil Nadu||113,869.36||99,886.12|
|CS-2: PROJECT TECHNICAL ADVISORY CONSULTANTS||Loan 3394||08 Oct 2018||ANTEA NEDERLAND BV(ANTEA GROUP) JV | MONITORWEG 29, 1322, BK ALMERE, POSTBUS 10044, 1301 AA, ALMERE NETHERLANDS||Water Resources Department, Gov't of Tamil Nadu||1,148,387.00||1,018,025.00|
|CS-5: TOPOGRAPHY SURVEY - CAUVERY||Loan 3394||15 May 2018||PRIME MERIDIAN SURVEYS PRIVATE LIMITED | NEW #68/6, OLD #63/6, MATHANGI FLAT JONES ROAD, SAIDAPET, CHENNAI -15 INDIA||Water Resources Department, Gov't of Tamil Nadu||391,182.00||344,181.00|
|CS-5: TOPOGRAPHY SURVEY - VENNAR||Loan 3394||15 May 2018||SECON PRIVATE LIMITED | PLOT NO. 147, 7B ROAD, EPIP WHITEFIELD, BANGALORE 50066 INDIA||Water Resources Department, Gov't of Tamil Nadu||306,367.00||269,557.00|
|CS-4: INDEPENDENT INTERNAL AUDIT FIRM||Loan 3394||15 May 2018||M/S LOCHAN & CO. | B-1, DHARMA APARTMENTS, INDRAPRASTHA EXT NEW DELHI 110 092 INDIA||Water Resources Department, Gov't of Tamil Nadu||124,504.00||109,545.00|
|CS-1D: Consultant Recruitment and Procurement Specialist (National)||Loan 3394||01 Feb 2017||Sanjay Shakya | B-99 Narmada Path Shanti Nagar B,Ujarki Thadi Jaipur, Rajasthan, India 302 019||Water Resources Department||28,619.42||—|
|Title||Document Type||Document Date|
|Climate Adaptation in Vennar Subbasin in Cauvery Delta Project: Procurement Plan||Procurement Plans||Apr 2020|