Spring Occurrences in Dieng Plateau Jessica Rotua Valentina Lubis, Doni Prakasa Eka Putra, Fikri Abdurrachman
Jessica Rotua Valentina Lubis (a*,c), Doni Prakasa Eka Putra (b), Fikri Abdurrachman (c)
a) Student Master of Geological Engineering, Faculty of Engineering, Gadjah Mada University, Yogyakarta
Jl. Grafika Bulaksumur No. 2 Senolowo, Sinduadi, Kec. Mlati, Kabupaten Sleman, Daerah Istimewa Yogyakarta 55284. *Email: jessicarotuavalentinalubis[at]mail.ugm.ac.id
b) Departement of Geological Engineering, Faculty of Engineering, Gadjah Mada University, Yogyakarta
Jl. Grafika Bulaksumur No. 2 Senolowo, Sinduadi, Kec. Mlati, Kabupaten Sleman, Daerah Istimewa Yogyakarta 55284
c) Ministry of Public Works of Housing, Directorate General of Water Resources
Jalan Pattimura No. 20 Kebayoran Baru Jakarta Selatan 12110
Abstract
Springs are one type of water resource that is important to fulfil clean water and irrigation needs. The availability of springs can support the lives and activities of the people who live above them. The Dieng Plateau in Central Java province has natural phenomena and beautiful view, as well as having various historical attractions, this makes Dieng has potential in the tourism sector. By increasing the tourism in Dieng, the need for water to support life must be concern in quality and quantity. Currently there are many springs, lakes and craters in the Dieng area. This allows sulfur contamination occur from the crater to the springs which local residents use every day. Therefore, it is important to carry out an inventory of springs in order to know the community^s need for clean water in the future, both in quantity and quality. Researcher collected primary and secondary data by geology and hydrogeology mapping, measurements of the physical-chemical properties of ground water, and spring discharge. Methods for testing physical-chemical properties and measuring discharge are measured directly in the field using Water Quality Tester 4in1 Model Number TDS-6B. Based on the mapping results, there are 16 (sixteen) springs located in 2 Ground Water Basins (CAT). Based on the measured discharge value (l/s), the maximum discharge value is 133.2 l/s and the minimum discharge is 0.4 l/s. Based on the measured pH value, the average value for CAT Wonosobo and 7.69 for CAT Karangkobar. Based on the measured TDS (mg/L) value, the average value for Wonosobo CAT is 126.75 mg/L and 233 mg/L for Karangkobar CAT. Based on the measured DHL value (μ-s/cm), the average value for CAT Wonosobo is 252.5 μ-s/cm and 465 μ-s/cm for CAT Karangkobar. Based on the T value (degC) measurable, the average score on the Wonosobo CAT is 17 degC. and 18.57 degC is for CAT Karangkobar. From the measurement results, it was concluded that the existing spring discharge was not sufficient for the daily water needs of the community. Based on the results of physical-chemical measurements, the pH, DHL and TDS values in spring water in the Dieng Plateau are in good quality in water drink standards based on applicable references and regulations.
Keywords: Water springs, Physical-Chemical Properties Test, Discharge of Springs
Topic: Hydrology, hydrogeology, and geology engineering
