This study analyzes the performance of the secondary irrigation channels in the Leuwi Urug Irrigation Area, Purwakarta Regency, West Java. The region plays a significant role in rice production and relies heavily on efficient irrigation. However, observed issues include poor infrastructure, water loss due to leakage, and uneven distribution. The research focuses on determining the reliable water discharge and evaluating the efficiency of secondary channels. Data collection involved a field survey, hydrology and climatology data analysis, and flow measurement using the current meter method. The results show that the reliable discharge (Q80) of Ciherang River is 1.35 m³/s, which is sufficient to meet the irrigation demand of 0.033 m³/s/ha. However, the average efficiency of the secondary irrigation channels is only 46%, significantly below the standard efficiency of 90%, due to unlined soil channels. Improvements in infrastructure and water distribution systems are recommended to enhance irrigation performance and agricultural productivity.
Sudjatmiko et al. (Wed,) studied this question.