Analisis Ketersediaan Dan Kebutuhan Air Baku Pada Embung Sungai Bilal Kabupaten Nunukan Menggunakan Metode F.J. Mock

Abstract

Due to population growth and the region's fast development, domestic and non- domestic water consumption has grown in Nunukan Regency. To meet the clean water demand, the government has built the Bilal River Reservoir, which initiated a study of the Bilal River Reservoir to be carried out to determine the reservoir's reliability in meeting the demand for clean water in line with population growth. This study analyzed water availability and the demand for raw water in the Bilal River Reservoir. In the analysis of water availability, the Modified Penman approach is used to analyze evapotranspiration, while the F.J. Mock method was used to study effective debit. From the analysis of raw water availability using the F.J. Mock with 90% reliability, The biggest Q90 was in January at 119 liters/sec, and the smallest was in December at 15 liters/sec. As well as the results of the largest water demand analysis in 2031 in the West Nunukan Village zone of 19,947 liters/sec and the smallest in 2022 in the Central Nunukan Village zone of 6,249 l/s.