The Kalpasar Project or the Gulf of Khambhat Development Project is a proposed water and transport infrastructure project in Gujarat, India. It envisages constructing a dyke across the Gulf of Khambhāt to create a large freshwater coastal reservoir by storing runoff from rivers draining into the gulf, including the Mahi, Sabarmati, Dhadhar and coastal rivers of Saurashtra.
The project has undergone several revisions since it was first proposed. Earlier versions envisaged a larger dam with a tidal power component, but the tidal power component was later dropped from the proposal. The 2022 pre-feasibility report described a proposed Kalpasar dyke of about , including about in the gulf, with a freshwater reservoir of about 7,800 million cubic metres and an estimated cost of ₹100,200 crore. An environmental clearance application submitted in May 2026 gave an updated project estimate of .
Spending on feasibility studies began in 2004. As of December 2025, the detailed project report was at the finalisation stage. A later revised alignment kept the Narmada's discharge outside the proposed freshwater reservoir. In May 2026, India and the Netherlands signed a Letter of Intent for technical cooperation on the Kalpasar Project, while the Government of Gujarat submitted an application to the Ministry of Environment, Forest and Climate Change to begin detailed environmental studies for the project..
The Bhadbhut barrage on the Narmada River, associated with the wider Kalpasar planning framework, is under construction. Plans for an expressway linking Bhavnagar and Bharuch via the dyke began consultation in May 2026.
Background
Etymology
Kalpasar means a lake that fulfils all wishes in Sanskrit. The construction of the word is similar to Kalpavriksha, a wish-fulfilling tree in Jain and Hindu mythology.
History
The Gulf of Khambhat was identified as a promising site for tidal-power generation by UNDP expert Eric Wilson in 1975. Successive governments were later presented with proposals for a project that came to be known as the Kalpasar Project. In 1988-89, a reconnaissance report was prepared for a dam across the Gulf of Khambhat. The report concluded that, assuming sound foundation conditions, closure of the gulf was technically feasible.
The project was later redesigned several times. In earlier versions, the main dam was proposed together with a tidal-power plant; later revisions reduced the scope and dropped the tidal-power component from the main proposal. The 2022 pre-feasibility report described a dyke of about and placed the estimated project cost at ₹100,200 crore. In February 2026, the Gujarat government stated that the detailed project report was in the finalisation stage and that, after approvals from the state and Union governments, the project was planned to be completed within eight years from the start of work.
Project details
Objectives
Kalpasar aims to create a fresh water coastal reservoir in the Gulf of Khambhat by constructing a dyke across the gulf. The reservoir is intended to store runoff from rivers such as the Sabarmati, Mahi and Dhadhar, as well as coastal rivers of Saurashtra draining into the gulf. The stored water is proposed to be used for irrigation, drinking-water supply and industrial purposes in Gujarat.
The project is intended to provide irrigation to about 9.99 lakh hectares across 42 talukas in nine districts of Saurashtra, provide drinking and industrial water, support groundwater recharge, and reclaim nearly one lakh hectares of tide-affected land for development. The official Kalpasar website also describes the project as intended to provide irrigation benefits to about 10 lakh hectares in Saurashtra, improve drinking-water and industrial-water supply, support groundwater recharge and improve transport connectivity across the Gulf of Khambhat.
The project has also been proposed to improve transport connectivity between Saurashtra and South Gujarat through a road and rail corridor over the dyke. The 2026 proposal described a corridor carrying a 16-lane roadway and four-lane railway line, reducing the travel distance between Bhavnagar and Surat or Mumbai from about to about .
Earlier versions of the project included tidal-power generation, but the tidal-power component was later dropped from the main proposal.
Scope and cost
Abandoned original plan and scope
The original plan envisaged a larger dam along with a tidal-power plant. A state government release described a Rs 55,000 crore project, then expected to be completed by 2020, with a reservoir having gross storage of 16,791 million cubic metres, a 64 km dam across the Gulf of Khambhat connecting Ghogha in Bhavnagar district with Hansot in Bharuch district, and a tidal-power generation house with an installed capacity of 5,880 MW. The tidal-power scheme would have required turbines and related power-generation works, but this component was dropped from the current main proposal. Another estimate given by the government in October 2010 stated that the proposed dam would be built from north of Bhavnagar in the west to Alandar in Dahej on the east. In 2017, the revised project plan reduced the size of the proposal and dropped the tidal-power component from the main scheme.
Revised current scope
The current proposal differs from the earlier 64 km dam and tidal-power scheme. The 2022 pre-feasibility report describes a dyke across the Gulf of Khambhat, including about in the sea portion and landward sections on the Bhavnagar and Bharuch sides. The 2022 pre-feasibility report divides the proposed dyke into a sea portion, a eastern section towards Bharuch district and a western section towards Bhavnagar district.
The proposal includes a freshwater reservoir of about 7,800 million cubic metres and a wide road-rail corridor over the dyke. The official salient-features page describes the dam top width as , with a 16-lane road and four-lane rail corridor, while the 2026 environmental-clearance figures describe a transport corridor. Tidal-power generation is not envisaged in the 2022 proposal, although the report identifies wind and solar potential around the project area.
A fresh environmental-clearance application submitted in May 2026 revised the project estimate to ₹1,33,246 crore. The updated proposal included a dyke, a reservoir of 7,807 million cubic metres, and a transport corridor carrying a 16-lane roadway and a four-lane railway line. The proposal also included a wind-solar hybrid system capable of generating 2,500 million units annually.
The updated alignment connects Kardej village in Bhavnagar district to Paniyadra village in Bharuch district. The alignment was selected to reduce direct impacts on ecologically sensitive areas.
Kalpasar dyke: The proposed dyke across the Gulf of Khambhat is described in the 2022 pre-feasibility report as about long, including sea and landward sections in Bhavnagar and Bharuch districts.
Bhadbhut barrage: The Bhadbhut Barrage Project is being constructed near Bhadbhut in Bharuch district on the Narmada River. The project includes a barrage with 90 gates, a six-lane bridge and about of flood-protection embankments with service roads on both banks. The official project website states that the work was awarded to DBL-HCC JV on an EPC basis and is in progress.
Transport corridor: The dyke route has been described as reducing the road distance between Bhavnagar and South Gujarat from about 240 km around the gulf to about 60 km across it.
Water storage and irrigation: The proposed reservoir is intended to store river runoff for irrigation, drinking-water supply and industrial use.
Issues
The Narmada River is one of India's notified national waterways. In 2019, the Union water-transport authorities raised concerns that the then design of the Bhadbhut barrage would allow only lower-capacity class III vessels, whereas the national-waterway notification envisaged class IV navigation. The Union government therefore asked the Gujarat government to upgrade the barrage and navigation-lock design to accommodate larger vessels.
The Kalpasar proposal also requires environmental and Coastal Regulation Zone appraisal. In 2022, the Expert Appraisal Committee deferred the proposal and asked for additional studies and information because of the project's multiple components. In 2026, the official Kalpasar website stated that the process for including the Kalpasar dyke as a permissible activity under the CRZ Notification, 2019, was under progress at the Ministry of Environment, Forest and Climate Change.
The revised alignment keeps the Narmada mouth outside the proposed reservoir. The L3 alignment shifts the dyke nearly 15 km north of the Narmada estuary, a design choice linked to estuarine ecology, fish breeding and migration patterns, and seabed conditions near the river mouth.
Dutch cooperation
In May 2026, India and the Netherlands signed a Letter of Intent for technical cooperation on the Kalpasar Project during Prime Minister Narendra Modi's visit to the Netherlands. The Letter of Intent was between India's Ministry of Jal Shakti and the Netherlands' Ministry of Infrastructure and Water Management.
During the same visit, Modi and the Dutch Prime Minister visited the Afsluitdijk, a 32 km Dutch dam and causeway. The Ministry of External Affairs stated that the visit highlighted parallels between Afsluitdijk and Kalpasar, and that both sides welcomed the Letter of Intent for technical cooperation on Kalpasar. It also stated that Dutch expertise in hydraulic engineering and India's scale of implementation presented opportunities for partnership.
The joint statement issued by the governments of India and the Netherlands stated that both leaders agreed to further enhance cooperation on the Kalpasar Project in Gujarat, where Dutch expertise and technical assistance could strengthen the India-Netherlands Strategic Partnership on Water.
Project progress
Feasibility, DPR and approvals 1975-2004: early planning and feasibility work: The project concept dates to the 1970s, with reconnaissance studies carried out in 1988-89. Spending on feasibility studies began in 2004.
2014-2019: feasibility studies: Bathymetric and land surveys were undertaken in the Gulf of Khambhat region, including work supervised by the National Institute of Ocean Technology. By July 2019, the state government said that 25 of 43 feasibility studies had been completed, eight were underway and ten were yet to commence.
2022: environmental-clearance proposal: In 2022, the Kalpasar Department submitted an environmental-clearance proposal for development of the Kalpasar project across the Gulf of Khambhat. The pre-feasibility report described a dyke of about , of which about would be in the gulf, and listed the estimated project cost as ₹100,200 crore. The Expert Appraisal Committee deferred the proposal and sought further studies and information.