Abstract
Abstract
Water loss always occurs in the process of delivering water from the water source to the user structures. The Benanain River, which is a natural channel, is a means of carrying water from Temef Dam to Haekto Weir to irrigate Haekto Irrigation Area and Benanain Weir which is used to irrigate Malaka Irrigation Area. The length of the river from Temef Dam to Haekto Weir is 23,689 m and from Haekto Weir to Benanain Weir is 21,673 m with a total length of 45,362 m. Along the way, water loss occurs due to the influence of evaporation, percolation, river cross-sectional area and river length. This research looked for water loss that occurred in the river and obtained an average result for the Temef Dam - Haekto Weir section of 0.243 m3/second and for the Haekto Weir - Benanain Weir section of 0.183 m3/second.