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Table J18: Estimated mean annual total utilizable water (utilizable MAR + estimated
return flow + estimated groundwater abstraction) for Natal/KwaZulu
(10 6 m 3 ).
Primary drainage region 1980 1990 2000 2010 .
Source:
Note:
Table J19:
W 3516 3509 3411 3418
V 3331 3333 3331 3337
U 602 2502 2601 2501
T 5224 5237 5256 5279
Total 14673 14581 14599 14535
After Anonymous, 1986. Management of the Surface Water Resources of
the Republic of South Africa, Department of Water Affairs, Pretoria, various
pages.
Data for primary drainage regions Wand T include areas outside
NatallKwaZulu.
Estimated mean annual intentional evaporation and disposal of poor quality
water for NatallKwaZulu 110 6 m 3 ).
Primary drainage region 1980 1990 2000 2010
Source:
Note:
W 18 26 27 27
V 25 26 26 27
U 7 7 7 7
T 3 3 3 4
Total 53 62 63 65
After Anonymous. 1986. Management of the Surface Water Resources of
the Republic of South Africa, Department of Water Affairs, Pretoria, various
pages.
Data for primary drainage regions Wand T include areas outside
Natal/KwaZulu.