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Conjunctive Use of Surface and Groundwater - page 13 / 37

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Data Base Improvement

Modeling Technology

Sustainability Criteria

Spatial Analysis Procedures

Decision Support Systems

3.1 Data Base Improvement

Availability of reliable data on hydro-climatic patterns, water demands, spatial and temporal characteristics of surface and subsurface water bodies is an essential prerequisite for sustainable water resource development. As long as adequate and reliable data are lacking, planning, design and management of water use projects will remain guesswork, water use irrational and wasteful and development unsustainable. Many projects were conceived and designed on a medium- to long-term basis, on the assumption that future climatic conditions would not change. This might not be so in the years to come, due to global warming and the greenhouse effect. Therefore, water planners and managers should begin to systematically re-examine engineering design criteria, operating rules, contingency plans and water storage and allocation policies. Demand management and adaptation are essential components for enhancing project flexibility to deal with uncertainties of climate change. In the main, water use planning programs can only be soundly formulated on the basis of adequate data on soil and its productivity, potentially available water resources, water demands, performance of existing water use projects and other related factors.

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