Water requirement in Pesanggaran is rice fields, while the availability of irrigation water is obtained from rainfall and irrigation discharge. The water balance is calculated by using a tool such as the Water Evaluation and Planning (WEAP) where the results of the WEAP are in the form of a broad percentage of water coverage that can be covered (Coverage). The results of the WEAP calculation are in the form of Coverage as a reference in calculating profits for each year. Optimization in the Very Dry and Normal Year is the existing of where the start of planting begins in December period 1 while the optimize has the start of planting in the December period 3 in the Dry and Wet Season. WEAP optimization is seen in the number of Coverage values where the coverage value for a Dry Year before optimization is 99.34%, and after optimization is 100%, Wet Year before optimization is 99.1%, and after optimization is 100%, for Very Dry Year Coverage value is 95.69%, and Normal Year Coverage as 99.16%.
                        
                        
                        
                        
                            
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