Analisis Kebutuhan Dan Ketersediaan Air Baku Embung Bolong Kabupaten Nunukan Menggunakan Metode NRECA

Rahmat Faizal, Wildan Firdaus, Aswar Amiruddin

Abstract


Raw water in Embung Bolong, Nunukan Regency, is currently experiencing a decline or depreciation due to low rainfall in Nunukan Regency, so it is necessary to conduct research on the availability of raw water, including the use of environmental conditions in Embung Bolong. Calculation of evapotranspiration using the Penman Modification and Effective Discharge method using the NRECA method includes data from related agencies in the form of rainfall data, air humidity, air temperature, wind speed, and length of sunlight. Based on the results of the analysis, the total water requirement for 2031 is 4.229 lt/s for the West Nunukan Village zone, 22.633 lt/s for the Central Nunukan Urban Village zone, 20.228 lt/s for the East Nunukan Urban Village zone, 6.475 lt/s for the South Nunukan Urban Village zone , 6,304 lt/s for the Selisun Village zone and the mainstay discharge Q90 reviewed from the last 10 years from 2012 to 2021, the largest water availability occurs in June, which is 50,645 lt/s and the smallest water availability occurs in April, namely of 0.224 l/sec.

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DOI: https://doi.org/10.35334/cesj.v2i1.4146

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