The Neelum Jehlum Hydropower Project is located in Pakistan and involves constructing a 160m long, 60m high composite dam on the Neelum River. This will divert water through a 48km headrace tunnel to a power station with 4 units capable of producing 969MW of electricity. The project aims to generate over 5 billion units of electricity annually and has an estimated cost of 274.882 billion Pakistani rupees. It involves various construction elements like intake structures, tunnels, surge chambers, and penstocks to harness the 420m hydraulic head for hydroelectric power generation.

1. Neelum Jehlum
HYDROPOWER PROJECT

2. Presented By
MUHAMMAD AQEEL

3. Why we build A DAM
The concept of a dam and its potential benefits,
which include water supply, electricity generation,
flood control, recreation and irrigation.
A barrier constructed to hold back water and raise
its level, forming a reservoir used to generate
electricity or as a water supply.

4. purpose of dam
Therefore, dams are constructed for a specific purpose such as
water supply, flood control, irrigation, navigation, sedimentation
control, and hydropower. A dam is the cornerstone in
the development and management of water resources
development of a river basin.

5. Advantages
1. Once a dam is constructed, electricity can be produced at a constant rate.
2. If electricity is not needed, the sluice gates can be shut, stopping electricity generation. The water
can be saved for use another time when electricity demand is high.
3. Dams are designed to last many decades and so can contribute to the generation of electricity for
many years / decades.
4. The lake that forms behind the dam can be used for water sports and leisure / pleasure activities.
Often large dams become tourist attractions in their own right.
5. The lake's water can be used for irrigation purposes.
6. The build up of water in the lake means that energy can be stored until needed, when the water is
released to produce electricity.
7. When in use, electricity produced by dam systems do not produce green house gases. They do not
pollute the atmosphere

6. Disadvantages
1. Dams are extremely expensive to build and must be built to a very high standard.
2. The high cost of dam construction means that they must operate for many decades to become profitable.
3. The flooding of large areas of land means that the natural environment is destroyed.
4. People living in villages and towns that are in the valley to be flooded, must move out. This means that they lose their
farms and businesses. In some countries, people are forcibly removed so that hydro-power schemes can go ahead.
5. The building of large dams can cause serious geological damage. For example, the building of the Hoover Dam in the
USA triggered a number of earth quakes and has depressed the earths surface at its location.
6. Although modern planning and design of dams is good, in the past old dams have been known to be breached (the
dam gives under the weight of water in the lake). This has led to deaths and flooding.
7. Dams built blocking the progress of a river in one country usually means that the water supply from the same river in
the following country is out of their control. This can lead to serious problems between neighbouring countries.
8. Building a large dam alters the natural water table level. For example, the building of the Aswan Dam in Egypt has
altered the level of the water table. This is slowly leading to damage of many of its ancient monuments as salts and
destructive minerals are deposited in the stone work from rising damp caused by the changing water table level

7. About Neelum Jehlum hydrop project
A composite Dam (Gravity + Rock fill) 160m long and 60m high will be constructed on Neelum
River at Nauseri. It is a Gated Diversion Dam.
The dam will create a head pond of 10 million cubic meters which will allow a peaking
reservoir (A natural or artificial pond or lake used for the storage and regulation of water)of 3.8
million cubic meters to meet daily peaking of power for more than 4 hours.
A six gate tunnel intake structure of 280 cumecs (a unit of flow equal to one cubic meter of
water per second) capacity will be connected three conventional flushing surface basins
installed at their end for taking sediment back into river.
The total length of headrace tunnel is almost 48 Km. A 19.54 Km stretch of the tunnel from the
Nauseri site will be constructed as a twin tunnel system each with cross sectional area ranging
from 52-58m2.
The remaining headrace tunnel down to the surge chamber will be a single tunnel having cross
sectional area 100m2 approximately.

8. The remaining headrace tunnel down to the surge chamber will be a single tunnel having cross
sectional area 100m2 approximately.
The tunnel portion to be excavated with TBM will be shortcrete lined with a concrete invert while
the drill and blast portion of the tunnel will have full face concrete lining.
The tunnel crosses under the Jhelum River at EI. 602.0, m asl, approximately 180m below
Riverbed.
The tunnel is accessed by 8 construction Adits(a horizontal passage leading into a mine for the purposes of
access or drainage) for removal of excavated spoil.

9. The Surge Chamber consist of 341m high riser shaft and 820m long surge tunnel, four steel
lined Penstock tunnels 118 m long and having 3.8 m internal diameter will also be constructed.
The underground power Station will have four units with a total capacity of 969 MW. The
Power Station will be connected with Gakhar Grid station through 500KV double circuit
transmission line.

11. Location
Neelum Jhelum Hydroelectric Project (NJHEP) is located in the vicinity
Muzaffarabad (AJ&K). It envisages the diversion of Neelum river water through a
tunnel out -falling into Jhelum River. The intake Neelum Jhelum is at Nauseri 41
Km East of Muzaffarabad. The Powerhouse will be constructed at Chatter Kalas,
22 Km South of Muzaffarabad. After passing through the turbines the water will
be released into Jhelum River about 4 Km South of Chatter Kalas. Neelum Jhelum
Hydroelectric Project has installed capacity of 969 MW. The Project will produce
5.15 Billion units of electricity annually

12. Project Key Data
• Installed capacity : 5x211Mw
• Annual generation : 5254 GWh
• Maximum gross head : 420 m
• Maximum discharge : 280 m3/s
• Concrete intake weir height : 42 m
• Catchment area : 6682 km2
• Mean flow at intake site : 335 m3/s
• PMF - 14 000 - 16 000 m3/s
• Reservoir volume : 8.0 Mm3

13. Funding:
NORAD/Mixed Credit
Value of Services:
USD 10.0 mill
Professional Staff:
270 expatriate man-months
Year:
1994 - 1997

14. SALIENT FEATURES
Overall Project Cost Rs. 274.882 Billions
Installed Capacity 969 MW, Four Units @ 242.25 MW each
Dam Type Composite Dam (Gravity + Rock fill)
Height / Length 60 / 160 Meters
Average Annual Energy 5.150 Billion electricity Units Annually
Average Head 420 Meters
Design Discharge 280 Cumecs
Tunneling Twin Tunnel ,Single Tunnel ,Tailrace Tunnel
Length 19.54 km each, Length 8.94 km, Length 3.54 km
EIRR 25.46 %
Date of Commencement 30-01-2008
Expected Completion date November 2016
Implementation Period About 9 years (106 months)

15. Old KEY FACTS
Project Duration Proposed: July 2002 – June 2010
Gross Head: 420 metres (original plan of 213 metres)
Dam Height: 148 feet
Water Diverted: 280 m3/sec
Length of Headrace Tunnel: 32.5 km (original plan of 28.49 km)
Power Generation Capacity: 963 MW (original plan of 500 MW)
Annual Energy Production: 5,150 GWh
Generation Cost: Rs 1.82 per KWh

16. By Print Media !!
about international Funding

17. Location of Neelum–Jhelum Dam
Country Pakistan
Location Muzaffarabad
Coordinates 34°23′34″N 73°43′08″ECoordinates: 34°23′34″N 73°
43′08″E
Status Under construction
Construction began 2008
Opening date 2016 est.
Construction cost Rs. 274.9 Billion ($2.89 billion USD)
Owner(s) Water and Power Development Authority

18. Type of dam Concrete gravity
Impounds Neelum River
Height 47 m (154 ft)
Length 125 m (410 ft)
Dam volume 156,000 m
3
(204,040 cu yd)
[1]
Total capacity 8,000,000 m
3
(6,486 acre·ft
Name Neelum-Jhelum Hydropower Plant
Coordinates 34°11′54″N 73°30′41″E
Commission date 2015-2016 (est.)
Type Conventional, diversion
Hydraulic head 420 m (1,378 ft)
Turbines 4 x 242 MW Francis-type
Installed capacity 969 MW
Annual generation 5,150 GWh