Analysis of meteorological water availability and water demand in Semarang Regency

Abstract

Population growths are increasing the demand for water. This can cause an imbalance of water availability to fulfill domestic water demand. Therefore, it is necessary to analyze the water availability and water demand so that water resources are maintained and can fulfill the community needs in the present and future. This research aims to analyze the water availability and domestic water demand in Semarang Regency. The methods consist of calculating monthly rainfall, calculating water balance using F. J Mock model, calculating the water demand regarding to the water availability, and calculating how much water can be obtained from rain harvesting. The results show the highest annual water availability in Semarang Regency is Pringapus district 48,559,764.55 m3/year, while the the lowest is Kaliwungu district 17,352,024.13 m3/year. The highest domestic water demand are in West Ungaran district, East Ungaran district, and Bergas district, while the lowest are in Bancak and Kaliwungu district. The total water demand is 6% of the total water availability, means there is no water deficit in Semarang Regency. The total volume of rainwater harvested is 120,163,412 m3/year which means the volume of rainwater harvested in one year can fulfill the domestic water demand in Semarang Regency.

Political and Economic Aspects of Integrated Urban Water Resources Management (Iuwrm) in Semarang City Indonesia

“…These challenges necessitate the development of sustainable management strategies that consider the interactions between stakeholders, the conservation of ecosystem services, and the sustainable utilization of resources. The analysis of meteorological water availability and water demand in Semarang Regency highlights the need for resolving the problem of inequality in water demand and availability through proper water resource management (Herdiansyah et al, 2022). Additionally, the preliminary study on plastic waste handling in Semarang City emphasizes the necessity of environmentally sound management of plastic waste due to increasing generation and associated environmental pollution (Pertiwi et al, 2018).…”