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Presentation
For 8.1 MGD Water Supply to Quetta
CONSTRUCTION OF MANGI DAM AND WATER CONVEYANCE
SYSTEM
Name of Project: Construction of Mangi Dam and water
Conveyance System
Location: The Mangi Dam is proposed to be constructed
Near Mangi Village on Khost River about 76Km
from Quetta City.
Estimated Cost Rs. 9,334.078 million
• Construction of Dam Body (Rs.2.761 billion)
• Construction of Water Conveyance System
(Rs.5.05 billion)
• Construction of Boosting Stations, Surface
Storage Tanks and Building (Rs.1.523 billion)
3
SALIENT FEATURES
A. DAM BODY
B. Type: Concrete Gravity
Height over deepest foundation: 61 M (200.08 ft)
Catchment Area: 1217 Sq Km (470 sq miles)
Crest Length: 202 M (662.76 ft)
RESERVOIR:
Mean Annual Flow: 20.3 MCM (16455.30 Acre-ft)
Gross Reservoir Capacity: 36.43 MCM (29530.52 Acre-ft)
Dead Storage: 4.69 MCM (3801.76 Acre-ft)
Live Storage: 31.74 MCM (25728.76 Acre-ft)
Total Annual Releases: 13.41 MCM (10870.28 Acre-ft)
15 ft3 /sec
B. SPILLWAY
Type and Location : Ungated, Confined Overflow
Design Discharge: 888 m3/s (31353 ft3/s) based on
1 in 10,000 year return period
4
Crest Width 30.0 m (98.4 ft)
C. INTAKE STRUCTURES
Intake Type and Size: Intake structure built on upstream of
dam body
D. WATER CONVEYANCE SYSTEM
Pumping Main to High Point 40 Km of 600 mm DI pipeline
Combined Gravity Main 20 Km of 450 mm DI Pipeline
Pumping Requirements Intake Tower plus three
Booster pumping stations
Maximum Capacity of Pumping
Station. 36,720 m3 (8.1mgd)
Water Storage Tanks
Capacity (18,000m3) 2 Nrs. (40,00,000 gallons each)
Capacity (5,400m3) 3 Nrs. (12,00,000 gallons each)
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HOUSES
BUSHES
GRAVEYARD
PROPOSED DAM
RESERVOIR
BOUNDRY
ORCHARD
CULTIVATED
LAND
ROAD / TRACK
NALA FLOW
DAM CREST LEVEL = 1626.03 M
DAM CREST LEVEL = 1626.03 M
DAM CREST LEVEL = 1626.03 M
NORMAL POOL LEVEL = 1616.88 M
RESERVOIR BOUNDRY
RESERVOIR AREA = 400 HECTARES
LIMIT OF RESERVOIR AREA TO BE
ACQUIRED AT LEVEL = 1624 M
PROPOSED
GRAVITY DAM
MANGI DAM
RESERVOIR
G.L =
1595 M
RUINS
OF
RAILWAY
BRIDGE
Executing Agency
Public Health Engineering Department through Project
Management Unit (PMU) Mangi Dam Project by
establishment of Two Supervisory Cells i.e
Dam:
A cell of technical team from Irrigation Department will
assist the PD Mangi Dam Project during execution of
dam component.
Water Conveyance System:
A cell of technical committee from Public Health
Engineering Department will assist during execution of
water conveyance component.
Approval Status Mangi Dam Project is included in Federal PSDP with
50:50 sharing basis. The Project is approved by
ECNEC on 08th March 2016, an amount of Rs.1500.00
million has already been released by the Federal
Government, whereas; Rs.650.00 million is current year
allocation in Federal PSDP.
Time of Completion 36 months 11
Objectives. i. Providing about 8.1 MGD for augmenting the
existing under stress water requirements of Quetta
Town.
ii. Shifting the existing trend of extracting underground
water by means of tube wells to more sustainable
option of constructing the surface water storage
reservoirs.
iii. Providing un-interrupted drinking water supplies to
the inhabitants of Quetta Town by means of
Construction of water Tanks in Quetta Valley.
iv. Uplifting the livelihood of inhabitants by providing
employment and business opportunities during
construction phase of the project.
v. Mitigating the impacts of floods D/S of proposed
Dam site.
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Present Status a) Expression of Interest (EOI) for shortlisting of country
leading well reputed consulting firms has been
completed.
b) The Request for Proposal (RFP) documents have been
provided to the shortlisted consulting firms in order to
obtain technical & financial proposals (Last date 09th
June, 2016)
Contract Agreement
with FWO
• The Mangi Dam project was originally part of QWSEIP,
but later on excluded from the scope of project and
included in Federal PSDP as an independent project.
• Initially an agreement dated 03-3-2006 for survey
investigation and designing of Mangi & Halak Dam was
signed with FWO for a cost of Rs.48.88 million. FWO has
completed the assigned task & payment of Rs.49.93
million has been made to FWO.
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• Another agreement for construction of Mangi Dam and
Conveyance System was made with FWO through
“Direct Contracting” against contracted price of Rs.4.825
billion on 19-7-2007.
• The same could not attain maturity & finally the Mangi
Dam project was excluded from scope of QWSEIP
project & included as on independent project in Federal
PSDP.
• Balochistan Public Procurement Regularity Authority
(BPPRA) rules have now been implemented in
Balochistan w.e.f 15-12-2014.
• To decide fate of agreement signed with FWO, legal
advice from Law & Parliamentary Affairs Department
was sought.
• The Law & Parliamentary Affairs Department concluded
that the contract agreement of June 2007 is not advisable
in light of judgments of the Hon’ble Supreme Court and
enforcement of BPPRA rules.
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Way Forward Award of Civil Works
In order to expedite pace of progress of project and to save
time, the process of pre-qualification of Civil Contractors as
per Balochistan Public Procurement Rules 2014 needs to be
initiated. Some of the country leading civil works contractors
are:
• Frontier Works Organization (FWO)
• National Logistic Cell (NLC)
• Descon International Pvt Ltd
o Meerani Dam Project awarded (Rs.6.0 Billion)
• Zahir Khan & Brothers (ZKB)
o Shadi Kaur Dam Project (Rs.7.0 Billion)
o Basol Dam Project (Rs.9.6 Billion)
• Sadullah Khan & Brothers (SKB)
o Sabakzai Dam Project (Rs.2.0 Billion)
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• Agha Construction Company
o Construction of Six Dispersal structures on Nari
River (4.5 Billion)
• Noor ul Haq & Brothers
o Sawar Kaur Dam Project (1.00 billion)
o Water Conveyance System of Shadi Kaur Dam
Project. (2.50 billion)
o Water Conveyance System of Basol Dam Project.
(3.50 billion)
Conclusion. The Reputed firms such as; FWO, NLC & other major
construction companies will be facilitated & encouraged to
participate in the bidding process
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