Nai Gaj Dam

Nai Gaj Dam is an embankment dam currently under construction on the Gaj River in the gorge area at the edge of Kirthar Mountains range at about 65 kilometres (40 mi) north-west of Dadu city in Dadu District, Sindh Province of Pakistan. When complete, its power station will have a 4.2 MW installed capacity. Consultant supervision by Techno Consult International (TCI) from Karachi, Pakistan.[1][2]

Nai Gaj Dam
Construction of Nai Gaj Dam
Location of Nai Gaj Dam in Pakistan
Official nameNai Gaj Dam
LocationDadu District, Sindh, Pakistan
Coordinates26°52′32″N 67°19′14″E
StatusUnder construction
Construction began2012
Opening dateJune 2021 (exp.)
Owner(s)Water and Power Development Authority (WAPDA)
Dam and spillways
ImpoundsGaj River
Height194 ft (59 m)
Length714 ft (218 m)
Nai Gaj Dam
Operator(s)WAPDA
Installed capacity4.2 MW
A flow of Nai Gaj to Nai Gaj Dam

Construction

Construction of the dam started in May 2012. Initially planned to be completed in 3 years, the project has been heavily delayed, increasing its cost from an initial estimate of Rs17 Billon to a revised Rs 47.7 Billion in 2019, with a completion now expected in mid-2021.[3] Around 51% of the construction work was completed as of 2018.[4]

It is estimated that water will be supplied from Nai Gaj Dam to 28800 acres land in tehsil Johi and 300000 acres in other areas of Dadu District. Moreover, Nai Gaj Dam will supply 50 cusecs of water to the Lake Manchar for decreasing its pollution.[5] Furthermore, the water will also be supplied from the dam to Kachho desert and area of Kohistan in Dadu District.[6]

Salient features

Type of Dam: Earth Core Rockfill dam.
Height of Dam: 194 Ft
Live Storage: 0.16 MAF
Gross Storage: 0.30 MAF
Dead Storage: 0.140 MAF
Sedimentation Load: 0.45 acre-feet / sq. mile
Fuse Plug Capacity: 74000 Cusecs
Spillway Capacity: 253000 Cusecs
Command Area: 40,000 Acres
Cropped Area: 80,000 Acres
Cropping Intensity: 200%
Power House Installed Capacity: 4.2 MW
Project Cost (2009): Rs.28.153 Billion (Revised)
EIRR: 13.18%
B.C. Ratio: 1.32:1

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See also

References
  1. "Archived copy" (PDF). Archived from the original (PDF) on 2013-03-03. Retrieved 2014-04-16.CS1 maint: archived copy as title (link)
  2. http://wapda.gov.pk/htmls/naigaj.htm
  3. Shahid, Jamal (2019-08-21). "Nai Gaj dam construction cost tripled due to delay, Senate panel told". DAWN.COM. Retrieved 2020-04-10.
  4. "Water Sector".
  5. Newspaper, From the (2017-06-29). "Nai Gaj Dam". DAWN.COM. Retrieved 2018-06-03.
  6. Khan, Mohammad Hussain (2016-07-11). "Nai Gaj dam project: delay and cost overruns". DAWN.COM. Retrieved 2018-06-03.


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