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Water Balance Analysis and Design of Water Resources Conservation in Prumpung Watershed, Tuban District, East Java Shah, Muhammad Syahdan; Purwanto, Muhammad Yanuar Jarwadi
Jurnal Teknik Sipil dan Lingkungan Vol. 1 No. 3: Desember 2016
Publisher : Departemen Teknik Sipil dan Lingkungan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsil.1.3.111-124

Abstract

Development of the region will increase water requirement. Increased water use will influence human intervention on water resources. The purpose of this study were to analyze water availability and water demand, and to provide recommendation of conservation to increase water storage capacity in Prumpung basin, Tuban. Prumpung basin geographically located between three sub-districts: Bancar, Kerek and Tambakboyo with an area of 22.319,14 ha. The calculation was conducted using water balance analysis. The total water requirement in Prumpung watershed in 2014 was 138.295.090,73 m3/year and water availability was 64.157.428 m3/year. It meaned that in 2014 Prumpung watershed had water deficit of 74.137.662 m3/year and need water conservation program. Conservation programs were conducted by using artificial well, rorak terrace, and retention pond. The number of conservation unit required were 53.281 units artificial wells, 1.077.708 units rorak terrace, and 72 units retention ponds which can absorb water of 142.665.013 m3/year. Total cost required was Rp 516.823.553.224,00.Keywords: conservation design, water availability, water balance,water deficit, water  requirements
Water Credit Analysis of Water Conservation Infrastructure Unit in Prumpung Watershed (DAS), Tuban District, East Java Aldrianus, Wanca; Purwanto, Muhammad Yanuar Jarwadi
Jurnal Teknik Sipil dan Lingkungan Vol. 1 No. 3: Desember 2016
Publisher : Departemen Teknik Sipil dan Lingkungan IPB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsil.1.3.125-136

Abstract

Water credit is the activity to increase groundwater by increasing infiltration. The purpose of this research were to design and to analyse water credit of water conservation infrastructure unit in Prumpung DAS. The research consisted of prediction rainfall analysis, designing and water credit analysis of each water conservation infrastructure. The result showed that water credit of single artificial well unit were Rp 6.160.832 to Rp 9.555.674 per m3/year for mediterranean soil, Rp 30.804.158.249 to Rp 47.946.013.645 per m3/year for grumosol soil, and Rp 10.589 to Rp 16.464 per m3/year for regosol soil. Water credit of communal artificial well unit were Rp 10.498.475 to Rp 11.200.082 per m3/year for mediterranean soil, Rp 52.492.374.552 to Rp 56.443.974.147 per m3/year for grumosol soil, and Rp 17.426 to Rp 19.194 per m3/year for regosol soil. Water credit of rorak unit were around Rp 198.701 per m3/year for mediterranean soil and Rp 993.514.151 per m3/year for regosol soil. Water credit of water retention unit were around Rp 14.16 per m3/year for mediterranean soil, Rp 2.125 per m3/year for grumosol soil and Rp. 850 per m3/year for regosol soil.