Assessment of Water Balance at Mayang Watershed, East Java

Geosfera Indonesia

卷:6

Sri Wahyuningsih¹  Ariska Mia Christiwarda Sihombing²  Indarto Indarto² 

[1] Department of Agricultural Engineering, Agricultural Technology Faculty, University of Jember, Jl. Kalimantan No. 37 Jember, 68121, Indonesia;

[2] Department of Natural Resources and Environmental Management, University of Jember, Jl. Kalimantan No. 37 Jember, 68121, Indonesia;

关键词: water balance;    water supply;    water demand;    mayang;    watershed;    weap;   

DOI  :  10.19184/geosi.v6i1.23111

来源: DOAJ

【 摘 要 】

Mayang Watersheds frequently hit by floods during the rainy season and drought during the dry season. This study aims to assess the water balance by calculating water resource availability and water demand in the Mayang watershed. The Water Evaluation and Planning (WEAP) model was used as the primary tool for the analysis. The supply of water comes only from precipitation. Demand was calculated based on the water demand for irrigation, domestic, urban, industrial, and livestock uses. The unit of time to calculate the water balance is ten days. It means that each month is divided into three-time steps. Analysis of the WEAP is based on the water demand from 2002 to 2019. The results showed that from 3rd December to 1st May, the Mayang river and its tributaries could supply all demand sites up to 100%. However, unmet demand occurs from 2nd May to 2nd December. The highest first unmet demand occurred in October, with 0.67 million m3. The management of water resources, especially in terms of distribution during the rainy season and dry season, must be considered.

【 授权许可】

Unknown