The goal of the study was to improve irrigation water management in the Krueng Jreu Irrigation Area in Indonesia by optimizing cropping patterns and schedules. Researchers used the K factor to simulate different cropping patterns and schedules, aiming for a K factor above 0.75. The best pattern identified was rice-rice-soybean with planting seasons in mid-July, mid-November, and mid-March. This schedule resulted in the highest frequency of K factors above 0.75, indicating efficient water use. Water was allocated to different canal groups based on the K factor values to ensure optimal irrigation network operation.