140
C. Winograd
Table 7
Renewable water resources and irrigation (annual average)
Continent regions
Precipitations (mm)
Renewable water
(RW)
resources (km 3
)
Percentage of world
RW total (%)
Water use efficiency
ratio (%)
Irrigation water
withdrawal (km 3
)
World
809
43,022
100
44
2710
Africa
678
3931
9
48
184
Northern Africa
96
47
0
69
80
Sub-Saharan Africa
815
3884
9
30
105
Americas
1091
19,238
45
41
385
Northern Americas
636
6077
14
46
258
Central America and Caribbean
2011
781
2
30
15
South America
1604
12,380
29
28
112
Asia
827
12,413
29
45
2012
Western Asia
217
484
1
47
227
Central Asia
273
263
1
48
150
South Asia
1602
1766
4
55
914
East Asia
634
3410
8
37
434
Southeast Asia
2400
6490
15
19
287
Europe
540
6548
15
48
109
Western and Central Europe
811
2098
5
43
75
Eastern Europe and Russia
467
4449
10
67
35
Oceania
586
892
2
41
19
Australia and New Zealand
574
819
2
41
19
Pacific Islands
2062
73
0
–
0.05
Source
by author, based on FAO (2011)