Heni Rengganis
Pusat Penelitian dan Pengembangan Sumber Daya Air

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Perunutan aliran sungai bawah tanah dalam rangka pengembangan sumber daya air daerah karst Heni Rengganis; Wawan Herawan; Wulan Seizarwati
JURNAL SUMBER DAYA AIR Vol 12, No 1 (2016)
Publisher : Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1282.047 KB) | DOI: 10.32679/jsda.v12i1.163

Abstract

Tracer technique is widely known as one of the methods used to find the relationship between the cave or underground river system in karst areas of South Blitar. In karst area of south blitar karst areas a number of water sources such as springs, underground river, and some streams out into the South Sea trace connections amongtracing the flow of underground river using tracer technique has been implemented with the aim to obtain data and information on flow systems around Umbul Tuk caves, so that water resources can be further developed as a value-added utilization of raw water supply in Blitar. Testing was conducted using artificial tracer material in the form of common salt NaCl and measurements were performed using a measuring instrument electrical conductivity (EC ). The measurement results indicate the existence of an underground river channel that connects Rowo with Umbul Tuk, with a flow rate of Umbul Tuk canal towards the South Sea of 360 l/s (March 2012), which has the potential to be exploited. Utilization of this flow, in addition to the needs of local people, and potentially also for fulfilling the needs of the new tourism in Pangi coast of the South Sea, which at present is still not developed.
Tipologi dan kualitas sumber-sumber air di Pulau Yamdena dan Selaru, Maluku Tenggara Barat Wulan Seizarwati; Heni Rengganis
JURNAL SUMBER DAYA AIR Vol 12, No 1 (2016)
Publisher : Bina Teknik Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1517.754 KB) | DOI: 10.32679/jsda.v12i1.166

Abstract

Yamdena and Selaru Islands grouped in the cluster of Tanimbar Archipelago, West Southeast of Maluku. In this area, identified some water resources such as springs, dug wells, and rivers. Water quality study in this area is carried out in order to utilize water resources to support regional development of the small islands in Tanimbar Archipelago. The assessment of groundwater chemistry typology is performed to springs that potential to be developed, such as Wetemar, Wemomolin, Wesori, and Wetotote by using a classification method in Piper Trilinier Diagram. The assessment of water quality status and feasibility of utilization is performed to all type of water resources that has been identified and potential to be utilized. Physical and chemical parameters of water are obtained from direct measurement in field and laboratory testing. Analysis and evaluation results indicate that the typology of springs in Yamdena and Selaru Islands came from groundwater flow in the upper zone which was influenced by surface water. According to the laboratory testing results, almost water resources in Yamdena and Selaru Islands have not met yet the quality standard. The final results of this research are expected to be helpful for the further water utilization which is directed to make a sustainable utilization.