Assessment of water availability in the Sekampung Argoguruh Sub-Watershed for sustainable water management

Abstract

Abstract In the Sekampung watershed, the Sekampung Argoguruh sub-watershed has been planned to be developed into one of the food barn regions, acting as a buffer for the nearby areas. This region is going to be converted from uncultivated to cultivated land in almost all parts. Given the recent developments in that area, it is necessary to determine if the water supply can fulfil the water demand for irrigation. Therefore, this study aims to evaluate the water supply-demand in the Sekampung Argoguruh sub-watershed in order to check the condition of long-term water resources for sustainable water management. In this study, the water supply was estimated by using National Rural Electric Cooperative Association (NRECA) method, while the amount of water required for agriculture and other uses in Sekampung Argoguruh sub-watershed were observed and calculated. The data analysis shows that the average water supply in the Sekampung Argoguruh sub-watershed is around 19.62 m3/s, whereas the average water demand for all activities in that region is roughly 11.65 m3/s. The situation of the water balance can be classified as excess based on the estimation findings, allowing water allocation to be done to satisfy demand.