PERFORMANCE INDEX MODEL FOR WATER ALLOCATION IN WATERSHED

Purpose: This research intends to build a performance index model of water allocation in watershed.   Theoretical reference: Along with the population growth and the increasing of social and society economy condition, so water demand is also increasing for various usage. Water demand is increasing in quantity as well as quality. However, likely happen the water critic in the future (unbalanced between supply-demand) is due to population growth in certain region that is uncontrolled.   Method: The research methodology consists of assessment water allocation based on the applicable rules in Ministry of PUPR (for being used as the model validation), to analyze the parameters that are influenced to the water allocation modelling by using WEAP (Water Evaluation and Planning) and SEM-Pls, then to build the performance index model of water allocation in the research location.   Result and Conclusion: The research result shows that after being carried out the correlation test by using 2 methods that are simulation software methods of Smar-PLS and Pearson method, there is obtained the performance index model of watershed that is fitted with research location is as follow: IK =  .. However, the classification of water allocation in the research area is as follow: Manjuto watershed, Selagan watershed, Air Dikit watershed, Teramang watershed, Muar watershed, Manna watershed, Padang Guci watershed, and Luas watershed are including non-critic watershed; Bengkenang watershed are including light-critic watershed; Kelam watershed and Nasal watershed are including moderate-critic watershed.   Implication of research: It is needed to be carried out the monitoring of water allocation in a watershed for being analyzed related with availability and fulfillment the water demand that is user friendly and to be carried out easily. This research is conducted in 11 watershed that is spreading in Sumatera Island, Indonesia.   Originality/value: To build a new model for assessing the performance index of water allocation in watershed.