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INDUS RIVER SYSTEM AUTHORITY(IRSA)

“Water Apportionment Accord 1991, Indus River System Authority”

January 10, 2011University of AgricultureFaisalabad

The Water Agreements

Indus Waters Treaty 1960

Water Apportionment Accord 1991

Inter-provincial Water Dispute

The Inter-provincial dispute on Water Distribution was initiated during the construction of two mega Irrigation Projects i.e.

Sutlej Valley Canal Project 1932Sukkur Barrage 1935

Committees / commissions

1937 Anderson Committee

1945 Rau Commission

1968 Akhtar Hussain Committee

1970 Fazal-e-Akbar Committee

1976 Indus Waters Commission (Anwar-ul-Haq Commission)

1983 Haleem Commission

1991 Water Accord

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Rim Stations:Indus @ TarbelaKabul @ NowsheraJhelum @ ManglaChenab @ Marala

Tarbela

ManglaKabul

Indus

Jhelum

Chenab

Ravi Sutlej

ChashmaC-J

T-P

6

Sindh Barrages

Legend

Punjab Barrages

Balochistan Canals

NWFP CRBC

Reservoirs

Major Rivers

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● Water Apportionment Accord (WAA) was signed amongst the Provinces on 16.03.1991 and approved by the Council of Common Interests (CCI) on 21.03.1991

●Total Paras 14●Paras on distribution 03●Development Paras 06●Escapages d/s Kotri 01●Others 04

● Under Clause 13 of the WAA ’91, the need to establish an Indus River System Authority was recognized and accepted for the implementation of the Accord.

Contd.....

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IRSA was established vide Act No. XXII of 1992 passed by the Parliament and approved by the President of Pakistan on, the 6th December 1992;

One of the prime responsibilities of IRSA is the regulation and distribution of surface waters amongst the Provinces according to the allocation and policies spelt out in the Water Accord 1991;

To Settle any question that may arise between two or more Provinces in respect of distribution of river and reservoir waters;

Contd…

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Any question in respect of implementation of Water Accord shall be settled by the Authority by the votes of the majority of members and in case of an equality of votes the Chairman shall

have a casting vote ;

A Provincial Government or the Water and Power Development Authority may, if aggrieved by any decision of the Authority, make a reference to the Council of Common Interests (CCI).

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PROVISIONS OF WATER ACCORD 1991 PERTAINING TO DISTRIBUTION OF WATER

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Para 14 (b)

The record of actual average system uses for the period 1977-82, would form the guide line for developing a future regulation pattern. These ten daily uses would be adjusted pro-rata to correspond to the indicated seasonal allocations of the different canal systems and would form the basis for sharing shortages and surpluses on all Pakistan basis.

Para 14 (b) (MAF)

Province MAF %

Punjab 54.51 53.06

Sindh 43.53 42.37

Balochistan 1.63 1.59

KPK 3.06 2.98

Total 102.73 100.00

1313

Para 2In the light of the accepted water distributional principles, the following apportionment was agreed to: (MAF)

Province Kharif Rabi Total

Punjab 37.07 18.87 55.94

Sindh * 33.94 14.82 48.76

NWFP (a) 3.48 2.30 5.78

(b) Civil Canals ** 1.80 1.20 3.00

Balochistan 2.85 1.02 3.87

77.34 37.01 114.35

+ + +

1.80 1.20 3.00

* Including already sanctioned Urban and Industrial uses for Metropolitan Karachi.

** Un-gauged Civil Canals above the rim stations.

Comparison of Para 2 vs Para 14 (b) (MAF)

Province

Para 2 Para 14 (b) Difference

MAF % MAF %MAF

(2-4)%

1 2 3 4 5 6 7

Punjab 55.94 48.92 54.51 53.06 1.43 12

Sindh 48.76 42.64 43.53 42.37 5.23 45

Baloch: 3.87 3.38 1.63 1.59 2.24 19

KPK 5.78 5.06 3.06 2.98 2.72 24

Total 114.35 100.00 102.73 100.00 11.62 100

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Para 4

Balance river supplies (including flood supplies and future storages) shall be distributed as below:

Punjab 37 %Sindh 37 %KPK 14 %

Balochistan 12 %

Total 100 %

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Present Distribution Mechanism of IRSAPresent Distribution Mechanism of IRSA(THREE TIER FORMULA SINCE 2003)(THREE TIER FORMULA SINCE 2003)

Scenario I–Water Availability < Actual Average System Uses 77-82–Distributed as per 14 (b) of the WAA 1991

Scenario II–Water Availability > Actual Average System Uses 77-82 but < Para 2 of WAA 1991–Actual Average System Uses are protected–Balance available as per Para 2 i.e. 10-daily approved by CCI

Scenario III–Water Availability > Para 2 of WAA 1991–Para 2 i.e. 10-daily approved by CCI are protected–Balance as per Para 4 of the WAA 1991

Note: KPK & Balochistan are exempted from shortages

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Para 6

The need for storages, wherever feasible on the Indus and other rivers was admitted and recognised by the participants for planned future agricultural development.

Western & Eastern Inflows & D/S Kotri Post Tarbela Average (1976.77 to 2009.10)

(MAF)

Max Min Avg

Western River

Indus @ Kalabagh 112.18 66.81 89.71Jhelum + Chenab 64.69 29.70 48.68

Total 176.87 96.51 138.39

Eastern River

Ravi @ Balloki 10.95 0.29 4.23Sutlej @ Sulemanki 10.62 0.01 2.59

Total 21.57 0.30 6.82

Total Western & Eastern River 198.44 96.81 145.21

D/S Kotri 91.86 0.29 30.67

D/S Kotri (Apr 1, 2010 to Jan 6, 2011) 54.42

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Provincial Canal Head Wdls(Post Independence to to-date)

Year Canal Withdrawals (MAF)

1947 69.1

1965 88.4

1967-76 (Post-Mangla) 96.0

1977-82 (Post-Tarbela) 105.0

1990-1999 107.0

2000-2009 93.5

2020

Reservoir Sedimentation (MAF)

Designed Live

Storage

Present Live

StorageSedimentation %

Tarbela 9.68 6.77 2.91 30

Mangla 5.34 *4.54 0.80 15

Chashma 0.77 0.263 0.51 66

Total 15.79 11.573 4.22 27

* Excluding raising component. After raising additional 2.99 MAF would be available

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Historical vis-à-vis Present Peaks at Different Rivers/Barrages Since 1947 (Cs)

Reservoir/

BarrageDesigned Capacity

Historical Peak

/YearPresent Peak

/DateRemarks

Tarbela 15,00,000 510,000 (89) 607,000/(30/07) Exceptional

Nowshera 138,000 (06) 400,000 (30/07) Exceptional

Attock 6,70,000 (58)11,94,600

(30/07)Exceptional

Kalabagh 9,50,000 8,62,000 (76) 9,36,000 (30/07) Exceptional

Chashma 9,50,000 7,86,600 (76) 10,38,874 (1/8) Exceptional

Taunsa 11,00,000 7,89,000 (58) 9,60,000 (2/8) Exceptional

Guddu 12,00,000 11,99,672 (76) 11,48,200 (8/8) Exceptional

Sukkur 15,00,000 11,66,574 (86) 11,24,720 (9/8) Exceptional

Kotri 8,75,000 9,80,329 (56) 9,39,442 (27/8) Exceptional

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Issues

Presently, due to sedimentation heavy shortages are being

faced by the provinces during Late Rabi (March) as well as

Early Kharif (Apr – Jun) periods (Creating provincial

disharmony);

Reservoirs normally touch the dead level in Late February &

March (Critical period for Wheat maturity);

Lean flows / erratic flows are being experienced in Early Kharif

(Disturbing the sowing of Cotton Crops);

The present storage component does not cater for the

requirements of Existing Irrigation Infrastructure;

Storage, as envisaged under Para 6 of the Accord, should be

constructed on war footing basis;

No feasible site at Chenab; Mangla has already been raised;

Only Indus waters can be stored at different locations Contd…

Storages are required to reverse the 70 – 30 % ratio;

Pakistan Hydel Generation Potential is 65,000 MW

Storage for managing the floods;

India total storage of 81 reservoirs is 151.77 BCM;

(123 MAF)

Indian Hydel Generation 37,000 MW (Potential 84044

MW)

Period Hydel Thermal & Others

80’s 70 % 30 %

90’s to to-date 30 % 70 %

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