Climate variability, climate change and water resource strategies for ...

Climate variability, climate change and water resource strategies for small municipalities
• Rainfall enhancement
The following discussion is based on the results obtained from the stakeholders who attended the
Drought Forum meetings.
8.2.1 Analysis of strategy options against each criteria.
In the following section each of the criteria are used to comparatively analyse the strategies.
8.2.1.1 Additional yield / saving
Strategies against Increased Yield / Saving
4
Local govenment DWAF Combined
3.5
3
2.5
2
1.5
1
Resource planning
Resource management
Artificial recharge
Conjunctive use
Standby relief
Tankering of water
Drought relief
Rainwater harvesting
Desalination
Water restrictions
Dry sanitation
Education
Tariff structures
Re use of grey water
Saline water for toilets
Reduction of leaks
Dual flush toilets
Rainfall enhancement
Figure 29: Graphical representation of all strategies against the criteria for Additional
yield / saving
Table 13: Average scores for strategies against the criteria for Additional yield / savings
Strategies:
Average scores
(Only those scoring ≥ 3 are listed below i.e. a score in the top 1/3) Combined Local gov DWAF
Regional water resource planning 2.8 2.2 3.7
Local water resource management & monitoring 3.0 2.6 3.7
Conjunctive use of surface and groundwater 2.8 3.2 2.0
Standby relief under critical conditions 2.6 3.2 1.7
Desalination 2.6 3.0 2.0
Water restrictions 2.6 2.4 3.0
Dry sanitation systems 3.3 3.0 3.7
Tariff structures 2.9 2.8 3.0
Saline water for toilets 2.5 2.2 3.0
Reduction of leaks programme 3.1 3.2 3.0
When considering which strategy would yield an increase in supply or a saving in water consumed,
the combined group of stakeholders chose three strategies (all of which scored above 3), viz.:
• Local water resource management and monitoring systems;
• Dry sanitation systems;
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