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The Dynamic Water Resources Assessment Tool (DWAT)21 has been under development since 2008 as a part of the activities of World Meteorological Organization (WMO).
It is designed to assist long-term planning and policy assessment and development. Its application allows the assessment of land-use changes within the basin over time, and of the impacts on water availability under a wide variety of scenarios, including climate change.
This tool is intended to help users, particularly policy specialists and water resource managers, identify current and future water management challenges and compare those with current and past water resources availability. This tool can also help better understand the impacts of past and present water management practices on water resources, as well as the interactions between climate, water and landscape.
Its use can contribute to water reform by providing nationally and regionally consistent water resources information and data, such as surface water, groundwater, urban and agricultural water supply and use. Moreover, it can aid in the formulation of government policy and the development of broad-scale strategic plans and decision making.
The DWAT is being peer-reviewed by a panel of Commission for Hydrology experts, who are applying it to basins located in different geographical areas, each with different climatic characteristics. This peer-review has the objective of further testing the system to strongly enhance the model reliability.
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