flood related management problems faced for projects of water resources

1. WATER AND POWER
DEVELOPMENT AUTHORITY
UPDATE ON WATER RESERVOIRS AND POWER GENERATION (INCLUDING HUB DAM)
NOVEMBER 2022

2. EXISTING HYDROPOWER STATIONS
Sr.
# Project
Project Benefits
Completion
Year
Gross Storage
(MAF)
Power
(MW)
1 Mangla 7.356 1,070 1967
2 Tarbela 5.882 3,478 1978
3 Tarbela 4th Ext - 1,410 2018
4 Warsak - 243 1981
5 Ghazi Barotha - 1,450 2003
6 Chashma 0.278 184 2000
7 Neelum
Jhelum - 969 2018
8 Khan Khwar - 72 2012
9 Satpara - 17.4 2012
10 Allai Khwar - 121 2013
11 Duber Khwar - 130 2013
12 Jinnah - 96 2013
13 Jabban - 22 2013
14 Gomal Zam
dam 0.892 17.4 2013
15 Golen Gol - 108 2018
16 Small HPP’s - 89 1952-1975
TOTAL 14.41 9,476
SMALL HPP’S
Project
Power
(MW)
Completion
Year
Daragai 20 1952
Rasul 22 1952
Shadiwal 14 1961
Nandipur 14 1959
Chichoki
Malian
13 1935
Kurram
Ghari
4 1957
Renala 1 1935
Chitral 1 1975
1

3. DEPLETION OF STORAGE CAPACITY OF EXISTING
RESERVOIRS

4. STORAGE CAPACITY
RESERVOIR
ORIGINAL
PRESENT
(2021)
LOSS
GROSS LIVE DEAD GROSS LIVE DEAD GROSS LIVE DEAD
TARBELA
(1300/1392 - 1550)
11.616 9.692 1.924 6.621 5.882 0.739
4.995 3.810 1.185
43% 39% 62%
MANGLA
(1040/1050 - 1242)
8.778 8.237 0.541 7.387 7.356 0.031
1.391 0.881 0.510
16% 11% 94%
CHASHMA
(637/638.15 - 649)
0.870 0.717 0.153 0.341 0.278 0.063
0.529 0.439 0.090
61% 61% 59%
TOTAL 21.264 18.646 2.618 14.349 13.516 0.833
6.915 5.130 1.785
33% 28% 68%
3

5. Dam Height 154 Ft
Spillway Ungated Concrete Ogee Type
Discharge Capacity 458,000 cusecs
Reservoir:
Full Reservoir Level 339 Ft
Max. Reservoir Level 346 Ft
Dam Top Level 352 Ft
Dead Storage Level 276.25 Ft
Gross Reservoir Storage
Capacity
Original (AF)
Reduced
Year 2010 (AF)
% age
Reduction (AF)
857,000 687,276 20
Live Storage Capacity 760,000 645,470 15
Dead Storage Capacity 97,000 41,806 57
HUB DAM PROJECT
4

6. 5
Neelum Jhelum
Tarbela 4th Ext.
Golen Gol
Kachhi Canal (Phase-I)
Rainee Canal
RBOD-I & III
WAPDA’S RECENT COMPLETED PROJECTS

7. PROJECTS UNDER EXECUTION BY WAPDA
Mohmand Dam
(1.29 MAF, 800 MW and
Water Supply 300 MGD)
Tarbela 5th Ext HP
(1530 MW)
Harpo HPP
(34.5 MW)
Diamer Basha Dam
(8.1 MAF, 4500 MW)
Nai Gaj Dam
(0.3 MAF)
Sindh Barrage
(2 MAF)
K – IV Project
(Water Supply 650 MGD)
Kachhi Canal
(30,000 Acres Land)
Kurram Tangi Dam
(18.9 MW, 16000 Acres CCA)
Dassu Hydropower
(4320 MW, 2160 MW Ph 1)
IMPACT
Gross Water Storage - 11.7 MAF
Power / Annual Energy- 9025 MW / 34.5 Billion Unit
Urban Water Supply - 950 MGD
Jobs Created - More than 35,000
6

8. FLOOD 2022
CONDITION OF DAMS IN OPERATION

9. TARBELA DAM
Tarbela
reservoir
attained its
Maximum
Conservation
Level of 1550 ft
on 20.08.2022
The reservoir
filling was
carried out as
per prescribed
SOP
The present live
storage of
Tarbela
reservoir is
5.827 MAF
A flood peak of
407,000 cusecs
encountered at
Tarbela on
26.08.2022 at
2300 hrs
It was safely
routed through
the reservoir
and no flood
damage was
caused
8

10. MANGLA DAM
Current reservoir level at Mangla Dam on 12.09.2022 was 1192.30 ft against
Maximum Conservation Level of 1242 ft
There was no flood situation in Mangla Dam Reservoir
9

11. KHANPUR DAM
Khanpur reservoir attained its Maximum Conservation Level of 1982 ft. a.m.s.l. on September 03, 2022.
Spilllway was operated for the first time during this year on 03.09.2022, to spill 6,876 cusecs of excess water.
The minimum design discharge of spillway is 6,000 cusecs, and its maximum capacity is 166,000 cusecs.
As on 12.09.2022, Khanpur reservoir has 81,328 AF of live storage and is filled to 95% of its maximum capacity.
No flood-like situation has been reported at Khanpur Dam this year.
10

12. HUB DAM PROJECT-FLOOD SITUATION & DAMAGES -2022
Sr.
No.
DATE EVENT
1 04.07.2022 The 1st rainfall was recorded in the catchment of Hub Dam
Reservoir
2 17.07.2022 at 0730 hrs Maximum Conservation Level i.e. 339 ft. (AMSL) reached
3 17.07.2022 at 0830 hrs Spillway Operation was started, which was the 9th Spillage of
its operational till-date
4 16th to 21st July 2022 During the past three (03) spells of heavy torrential
rains/flood, the Maximum Reservoir Level recorded was
343.05 ft. having Outflow Peak of 169,639 cfs
5 FLOOD EMERGENCY DECLARED AT HUB DAM
6 Preventive measures adopted so far utilizing manpower & equipment at sensitive areas
of Embankments and Appurtenant Structures, which are continued till date.
7 27.07.2022 During the past three (03) spells of heavy torrential
rains/flood, the Maximum Reservoir Level recorded was
343.05 ft. having Outflow Peak of 169,639 cfs
8 DC Lasbela deployed administrative staff with wireless and levies
11

13. HUB DAM PROJECT-FLOOD SITUATION & DAMAGES -2022
Instrumentation continuously being observed at Dam and Appurtenant structures
Condition Survey will be carried out on the d/s of Hub Dam Spillway after the suspension of Spillway
Operation/Flood.
Post Inspection of Hub Dam will be carried out to access detail damages, as downstream of Hub Dam
Spillway has submerged under water and spillage is continuous till to date.
Post Inspection of Hub Dam will be carried out to access detail damages, as downstream of Hub Dam
Spillway has submerged under water and spillage is continuous till to date.
Preliminary Damages observed by Project Office
The Stone Launching
Apron has been
disturbed.
Numerous Chute
Blocks, Baffle Blocks
and Dental Blocks
have also been
partially damaged.
Water has
accumulated on
Stilling Basin
downstream of
Spillway.
Minor damages/rain-cuts have
occurred at Inspection and Non-
Inspection Paths of Hub Canal at
different Chainages..
12

14. Pictorial view of rise of Reservoir after attaining its Maximum
Conservation Level of 339.00 ft on 17.07.2022 to Highest Level of
343.05 ft on 27.07.2022
13

15. VIEW OF SPILLWAY OPERATION-2022
14

16. OTHER ONGOING PROJECTS- under Approved PC-I’s
15
Sr
#
Project
PC-I Cost
(Million)
Generation
Capacity
(MW)
Live Storage
/ CCA
Physical Progress
Project Timelines
(Commencement /
Completion)
1. Keyal Khwar HPP 26,084.178 128 - 11%
January 2023 / Dec
2026
2.
Kachhi Canal
(Remaining Works of
Phase-I)
22,921.000 -
30,000
Acres
75% July 2020 / June 2023
3. Harpo HPP 9,522.801 34.5 -
Detailed Engg.
Design (DED)
under process
Dec 2019 / Dec 2026
Phase-I Dec 2022
Phase-II Dec 2026
4.
Attabad Lake Hydel
Power Project
Rs.21,246.166 54 -
Review of FS &
Implementation/
In progress . Will be
implemented by May
2027
5.
Lining of Muzaffargarh
& TP Link Canal
8,565.038 -
300,000
Acres
(Reclamation)
49.3% Jan 2014 / Dec 2023
5. Naulong Dam 28,465.000 4.4 0.199 MAF Project to be commenced shortly

17. 16
Sr
#
Project
PC-II Cost
(Million)
Generation
Capacity
(MW)
Live
Storage /
CCA
Physical
Progress
Project Timelines
(Commencement /
Completion)
1. Sindh Barrage
327.528
(PC-II)
- 1.8 MAF Feasibility Study (FS) 96% completed
2. Chiniot Dam
533.303
(PC-II) 80 0.85 MAF
Detail Engineering Design 7 % completed
3. Hingol Dam
421.372
(PC-II) 1.37 0.816 MAF
Detail Engineering Design (DED) 15 %
completed
4. Murunj Dam
349.956
(PC-II) 6 0.42 MAF
Feasibility Study (FS) & Detail Engineering
Design (DED) 86 % completed
5. CRBC (Lift cum Gravity
477.853
(PC-II) -
295,902
acres CCA
Review of Feasibility Study (FS), updation
of Detailed Engineering Design (DED) 80 %
completed
OTHER ONGOING PROJECTS- under Approved PC-II’s

18. FUTURE PRIORITY STORAGE PROJECTS
Sr.
No.
Projects River
Live
Storage
Power
Generation Status
MAF MW
1 Skardu (GB)
Indus River
3.2 1,500 Desk Study completed
2 Shyok (GB) 8.73 640 Feasibility Study (FS) completed.
3 Kalabagh (Pb) 7.9 3,600 DED completed
4 Wazirabad Dam
Chenab River
1.0 90
Conceptual Study in progress
5 Shah Jiwana Dam
1.3 80
6 Midh Ranjha Dam
1.3 80
7 Rohtas Dam Kahan River 1.0 50
8 Dhok Abaki Soan River 1.0 25 PC-II for FS in hand
9 Dudhnial Dam Neelum River 1.0 960 PC-II for FS in hand
17

19. INDUS CASCADE-THE MOST PRECIOUS ASSET
BUNJI
7100 MW
THAKOT-II 1004 MW
TUNGAS
2200 MW
YULBO
2800 MW
DASU (Stage-I & II)
4320 MW
THAKOT-I 2220 MW
THAKOT-III 1490 MW
PATAN
2400 MW
TARBELA /GBHP
7748 MW 6.0 MAF
SHYOK
640 MW, 5.0 MAF
Live Storage
SKARDU
1200 MW, 3.2 MAF
DIAMER BASHA
(4500 MW, 6.4 MAF
Live Storage)
AKHORI
600MW,6.0 MAF
KALABAGH
3600MW, 7.9 MAF
JINNAH
96 MW
CHASHMA
184 MW,0.2MAF
135 MW TAUNSA and 2 MAF
SINDH BARRAGE Further D/S
~44,600 MW
~36.23 MAF
Drop
of
7840
feet
upto
Taunsa
8340 ft
590 ft
SERMIC
640 MW
KHARMANG
1600 MW
THORGONAR
600 MW
WAPDA has identified a potential to store 36 MAF of water and generate more than 42,000 MW of
cheap energy in the Indus Cascade alone which could be a game changer

20. FUTURE PRIORITY HYDROPOWER PROJECTS
Sr. No Project Name
Installed
Capacity(MW)
Mean Annual
Energy
(GWh)
Gross
Storage
(MAF)
Status
1,2,3 Thakot–I, II & III (KP) 4,714 22,000
Run of River
(RoR)
Feasibility Study (FS) completed
4 Patan (KP) 2,400 12,500 RoR FS completed
5 Bunji (GB) 7,100 24,760 RoR
Detailed Engg. Design (DED)
completed
6 Yulbo (GB) 2,800 13,500 RoR Desk Study (DS) completed
7 Tungas (GB) 2,200 11,000 RoR DS completed
19

21. THANKS