Verification of the ACRU model using a decision support system developed for forest hydrology applications

Abstract

Simulation model output must be tested for goodness of fit against observed data before the model can be utilised with confidence for any useful or decision-making purpose. Unless this is the case, a model is unlikely to be accepted by users other than the model developers. With intense competition for Southern Africa’s sparse water resources, the potential impacts of afforestation, currently the only named streamflow reduction activity (SFRA) in the National Water Act of 1998, need to be assessed prior to planting. The ACRU model has been used extensively in conjunction with a decision support system to assist the user in preparing input information to simulate water production from afforested areas. Verification of the output of the ACRU model is thus of utmost importance if it is to be accepted by the water community at large for use in this type of application.

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