8. 1. UNDERGROUND WATER RESOURCES AND THEIR ANNUAL DISCHARGE BY MAIN BASINS                                                                                                                               (mln cu m)

Aquatic year

and main basins

Total discharge

Deep well

Semi-deep well

Subterranean

canals (Qanat)

Spring

Number

Annual discharge

Number

Annual discharge

Number

Annual discharge

Number

Annual discharge

   1369-70 .............

48785

70351

23741

158930

9225

28794

7899

31334

7920

   1374-75 .............

60946

93646

27708

254900

11441

30988

9543

44476

12253

   1378-79 .............

72174

112789

30646

301945

13327

31953

9178

49907

19023

   1379-80 .............

69549

118986

30757

314405

13263

33036

7962

49785

17566

   1380-81.............

73860

124422

31036

326231

13919

32599

8218

51787

20686

   1381-82 .............

74614

127800

31435

330269

13978

33691

8043

54162

21159

  1382-83..............

74347

130008

31403

338041

13492

34355

8212

55912

21240

 

 

 

 

 

 

 

 

 

 

Caspian Sea ..........

7828

26029

2922

104238

1463

2611

446

25404

2997

Persian Gulf and Oman Sea .............

26385

24419

5314

72957

4766

3950

1062

13529

15242

Lake Orumiyeh........

2324

7190

1149

64829

823

1540

229

943

122

Central Plateau ......

34184

64796

19719

90619

6212

22017

5786

13681

2468

Eastern Border .......

1264

1348

604

2525

196

2606

402

1140

62

Qareh Qum ...........

2363

6226

1695

2873

32

1631

287

1215

349

Source: Ministry of Energy.