Diamer Basha Dam


1.       LOCATION

Diamer Basha Dam Project is planed to built on river Indus, about  300 km upstream of Tarbela Dam Project and about 40 km downstream of Chilas Town, which is the headquarter of Diamer District of  Northern Areas.

2.       PREVIOUS STUDIES

In
itial Feasibility Report of Diamer Basha Dam Project was prepared by Canadian Consultants “Montreal Engineering Company (MONENCO) during 1981-1984. WAPDA appointed Local Consultants in December, 1989 for up-gradation of the Initial Feasibility Report.  The work on the project was stopped in January 1990. In 2002  WAPDA appointed  M/S NEAC Consultants, a joint venture consisted of  local &  foreign firms, NESPAK (Lead Firm) for up-gradation of  the Initial Feasibility Study. The Upgraded Feasibility Report of the Project was submitted by M/s NEAC on 31st August, 2004.  International Panel of Experts declared that the Project is technically feasible.  The contract for review of Feasibility Studies, Detailed Engineering Design and preparation of Tender Documents awarded to M/S Diamer Basha Consultants (DBC) (Joint Venture of local & foreign firms, with M/s Lahmeyer a leading firm). The DBC mobilized on  5th September,  2005 and the  assignment is scheduled to be completed by June, 2008.

3.       PRE-REQUISITE ACTIVITIES

Following are the pre-requisite activities:

  • Construction of  a new bridge at Thakot, on River Indus, as the exiting bridge can not sustain the anticipated transportation  load during construction of DBDP.

  • 323 Km of  Karakorum Highway (KKH) from Havalian to Dam site is to be Up-graded by NHA for transportation of heavy machinery & equipment.

  • 100 Km of KKH will be submerged due to impounding of reservoir, this portion is to be re-located on higher elevation.

  • Land acquisition. 

4.      MAIN COMPONENTS

Diamer Basha Dam Project will be the highest Roller Compacted Concrete Dam in the world having height of 272 meters. Salient features of the project are as follow;

. LOCATION 40 Km down steam of Chilas  
. MAIN DAM:    
.   Maximum Height 272 m  
    Type Roller Compacted Concrete (RCC)  
. DIVERSION SYSTEM 2 No. Diversion tunnels  
      1 No. Diversion Tunnels  
      Upstream and Downstream Cofferdams  
. MAIN SPILLWAY:    
    No. of gates 14  
    Size of gate 11.5 x 16.24 m  
. RESERVOIR LEVEL    
    Gross capacity 8.1 MAF (10.0 BCM)  
    Live capacity 6.4 MAF (7.9 BCM)  
    Min. operation level El. 1060 m  
. OUTLETS:    
    Low level 2  
    Sluicing 5  
. POWERHOUSE(S): 2  
    Total installed capacity 4500 MW  
    Location and type Two, one each under the right and left abutment  
    No. of units 12 each of 375 MW  
    Average generation 18,000 Gwh/year  

 

 

5.       PROJECT BENEFITS

  • Availability of about 6.4 MAF annual surface water storage of supplementing irrigation supplies during low flow periods

  • Harnessing of renewable source of clean and cheap energy through installed capacity of 4500 MW

  • Reduction of dependence on thermal power, thus saving foreign exchange

  • Employment opportunity, particularly to the locals, during the construction and operation

  • Creation of massive infrastructure leading to overall socio-economic uplift of the area and standard of living of people

  • The Project will pay back its cost in 10 years

  • Sediment Controls;

  • Flood mitigation.

6.       PRESENT STATUS

  • Detailed Engineering Design and Tenders Documents completed by M/s DBC on June 30, 2008. M/s DBC have been asked to continue the consultancy service beyond June 30, 2008 to complete left over and additional works.

  • Notice for prequalification of contractors for Lot-1,2 & 3 have been issued. Applications from International/local contractors are being received. Last date has been extended upto October 07, 2008.

  • Central Development working party (CDWP) has approved the First Phase i.e. settlement and land acquisition of Diamer Basha Dam Project at a cost of Rs. 116 Billion in the meeting held on 18.09.2008.

  • Micro Seismic Monitoring System has been installed to monitor seismic activities in the project area. Data retrieval and interpretation is under progress.

  • Meteorological station is being established at Dam site.

  • Resettlement action plan and Environmental Management plan are ready.

  • Mix design for RCC is under progress at CMTL Wapda Lahore.

  • Construction of comprehensive model at Nandipur is completed.

  • Arrangement of finances from the foreign Donor agencies for the construction of the project is under process.

  • PC-I for construction of Thakot Bridge was approved by GOP on December 21, 2006 and the work is being carried out by NHA.

  7. PROJECT IMPLEMENTATION
Implementation of the dam appurtenant structures shall be through international competitive bidding comprising of the following five lots:-
  Lot  No. Description
  LOT1. Concrete Dam and Related Structures Including Diversion Tunnels and Permanent Access Bridge
  LOT 2. Underground Works and Related Structures (Left and Right Banks)
  LOT 3. Hydromechanical Equipment (Left and Right Bank)
  Lot 4. Power Plant Generation Equipment (Left and Right Bank)
  LOT 5. Electrical High Voltage Equipment and Power Plant Electrical Equipment (Left and Right Bank)
  FINANCIAL OUTLAY
  Financial year

Expenditure (US$ Million)

 

Local

Foreign Total
  Pre-Construction 2008-09 545   545
  Construction starts 2009-10 545 180 725
  2010-11 735 261 996
  2011-12 972 555 1527
  2012-13 826 595 1421
  2013-14 826 760 1586
  2014-15 855 809 1664
  2015-16 811 640 1451
  2016-17 553 470 1023
  2017-18 673 574 1247
  Sub Total 7341 4844 12185
  Post Construction 2018-19 200 215 415
  Total 7541 5059 12600
         
 

8. LOCATION OF DIAMER BASHA DAM SITE

 
 
DIAMER BASHA DAM PROJECT
Scope of work PC-II Detailed Engineering Design, Tender Documents and Preparation of PC-I
Time Lines
  Planned Expected
PC-II 04.01.2009 (Completion) 04.01.2009 (Completion)
PC-I - -
Approval
  Rs. in Million Remarks
PC-II 1677.424 ECNEC approved on 07.03.2007
PC-I - -
Performance Report As on 31.10.2007
  Behind ....  days On target Ahead ..... days
PC-II - YES -
PC-I - - -
Financial Status 
PC-II                                                                                                                                                         (Rs, in Million)
Head of Account Expenditure upto 30.06.2008 (Provisional) Budget allocation 2007-2008 Expenditure in FY 2008.09 upto 30.09.2008 Total expenditure upto 30.09.2008 P)
Admn 88.955 Rs.417.000 Million 2.510 8.337
Consultants /POS 809.527 0.535 23.253
Assets 33.766 - -
Works 279.870 8.785 9.560
Overheads and Central payments 39.766 0.177 0.617
Total:- 1251.884 12.007 41.767
PC-I (DIAMER BASHA DAM PROJECT).                                                                                              (Rs, in Million)
Head of Account Expenditure upto 30.06.2008 (Provisional) Budget allocation 2008-2009 Expenditure in FY 2008.09 upto 30.09.2008 Total expenditure upto 30.09.2008 (P)
Admn

PC-I OF THE PROJECT IS TO BE COMPLETED BY M/S. DBC SHORTLY.

Overhead & central payments
Consultants
Assets
Works
Total:-
PC-I (LAND ACQUISITION AND RESETTLEMENT FOR DBDP)                                                       (Rs, in Million)
Head of Account Expenditure upto 30.06.2008 (Provisional) Budget allocation 2008-2009 Expenditure in FY 07.08 upto 30.09.2008 Total expenditure upto 30.09.2008 (P)
Admn

Revised PC-I for Land Acquisition and Resettlement for DBDP is being cleared by CDWP ni its meeting held on 18.09.2008 and has been forwarded to ECNEC, GoP, Islamabad, for approval.

Overhead & central payments
Consultants
Assets
Works
Total:-
PC-I (THAKOT BRIDGE)                                                                                                                     (Rs, in Million)
Head of Account Expenditure upto 30.06.2008 (Provisional) Budget allocation 2008-2009 Expenditure in FY 07.08 upto 30.09.2008 Total expenditure upto 30.09.2008 (P)
Admn

Full amount of original PC-I of Thakot Bridge was approved by CDWP on 21.12.2006 for an amount of Rs.302.6 Million has been forwarded to NHA under WAPDA, PSDP for the year 2007-2008. An amount of Rs.100.00 million has been allocated under WAPDA ADP 2008-09, that will be transferred to NHA after approval of revised PC-I.

Overhead & central payments
Consultants
Assets
Works
Total:-


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