Gulf of Khambhat Development Project (Kalpasar project)


B.N. Navalawala
Advisor to Hon. Chief Minister,
Gujarat State

Necessity of the Project:
Gujarat is water deficient state since its surface water resource is only 2% of the country against 6.4% land area and 5% human population. The per capita water availability of 990 m3 per annum in the state is much lower than minimum 1700m3/per capita/per annum requirement. Every year 38000Mm3 average surface water is available in the state. However including Sardar Sarovar Project (SSP), only 22000 Mm3 water is possible to store.   No dam site on land is now available for storing surplus/untapped 40% surface water. Gulf of Khambhat is only a site to construct dam which can store 10,000 million cu.m (25%) water inflows of the rivers (Narmada, Dhadhar, Mahi, Sabarmati and Saurashtra rivers). Because its location under consideration, this project would obviously be free from any interstate angle. The fresh water reservoir of this project requires minimal land acquisition and rehabilitation of people. This project will serve as a lifeline of Saurashtra region as well as an accelerator for the growing economy of Gujarat State.

Studies undertaken:-
The Government of Gujarat has investigated the possibilities  of  the Gulf of Khambhat Development Project since 1988 through various studies such as Reconnaissance study (1988-89), Pre-feasibility study (1996-98), Six Specific studies (1999) and feasibility study onwards 2000. The outcome of all 20 years studies conclude that fresh water Resources Project is technically feasible and economically viable.

Present status and activities:
Govt. has accorded the Administrative Approval amounting to Rs.84 crore (year 2002) for the preparation of this the feasibility report. New Kalpasar Depart-ment has been formed in 2003.¬† The past desk studies succinctly underlined several significant concerns with respect to the project framework which revolved around the issues of (i) Combining saline tidal power basin with fresh water reservoir (ii) Full economic Evaluation of tidal power generation and addition and alternation if any be made in the project (iii) Implications of poor foundation strata at mouth of Narmada estuaries & sedimentation & erosion near Luhara¬† point (Dahej) and (iv) Port inside the fresh water reservoir.¬† The two reports of group of nine national level consultants on the above mentioned issues were discussed in fifth meeting of the Expert Advisory Group (EAG) on 21-23, April,2008 & EAG recommended (i) Delinking tidal power component so as to develop¬†¬† Project as a fresh water reservoir project;(ii) Northward shifting of dam alignment at Kalatalav- Aladar line & (iii) Construction of Bhadbhut barrage on the river Narmada as “stand alone” project & diversion of Narmada river water into reservoir through Narmada diversion canal and (iv) Development of ports down stream of dam. Government of Gujarat, on 22/9/2009, approved above mentioned recommendation of EAG & accordingly to prepare final detailed Feasibility Report and Final Bankable Detailed Project Report for Project.

In addition, Government of Gujarat has decided to carry out the work of Barrage on River Narmada at village Bhadbhut as a ‚ÄúStand alone Project‚ÄĚ on PPP mode looking to the benefits available from Water, Land and Transport area. The tender for consultancy service for preparation of designs, estimates, draft tender papers, is already invited.¬†¬† Physical modeling of Bhadbhut barrage is also entrusted to the GERI, Govt. of Gujarat.¬† EIA/SIA study is entrusted to National Environmental Engineering Research Institute, (NEERI), Nagpur.

With the help of renowned premium institutes of Central and state government like NIOT(Chennai),NEERI(Nagpur),NIO(Goa),NGRI(Hydrabad),NIH(Roorkee),IIT(Roorkee),IIT(Delhi),CSMCRI(Bhavnagar),GERI(Vadodara) various studies like bathymetric survey, geo-physical,  regime modeling, earthquake analysis, traffic assessment, water availability, water quality of fresh water reservoir, impact on existing and new ports due to project, environmental impact assessment & social impact assessment,  effect on proposed dam due to tsunami, storm surge, sea level rise, etc are already commenced for the full feasibility report.

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