This study contributes to the understanding of potential for Agricultural Water Management (AWM) interventions in the watershed of the Jaldhaka river, a tributary of the Brahmaputra river, located in Bhutan, India and Bangladesh. An application of the Soil Water Assessment Tool (SWAT) and of a simple lumped groundwater model was calibrated to reproduce observed time-series of streamflows and groundwater levels. The model step-up was applied to study the current state of hydrology in the Jaldhaka watershed and the impacts of two types of AWM scenarios.

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