Analisa Model Struktur Geologi Untuk Menduga Air Tanah Dengan Menggunakan Metode Geolistrik

Abstract

Gondanglegi Kulon Village is located in Gondanglegi District, Malang Regency, the research location is in the Muhammadiyah Entrepreneur Islamic Boarding School area. From the results of information from local villagers, it was explained that in the study area there was no shallow groundwater found. This is also reinforced by the fact that there are no wells in the settlements of the residents around the Entrepreneur Muhammadiyah Islamic Boarding School, so that practically no residents use wells to fulfill clean water, they still depend on river water or PDAM services which are relatively expensive and continuous. still below expectations. As a center for religious education, Islamic boarding schools continue to develop supporting facilities. One of the most needed facilities is the availability of clean water. Quantitatively, the supply from the PDAM is not sufficient and the operational costs borne by the manager are too high. The use of groundwater is a solution that can be used to meet the needs of clean water at the research location. Therefore we need a technology to identify the point of exploration, the technology used in this research is geoelectric resistivity. By using the resistivity geoelectric method, it is expected to know the rock structure at the research location and see the potential for deep groundwater. Thus, the hope that in the future the Entrepreneur Muhammadiyah Islamic Boarding School (PPEM) will no longer depend on water raw materials from the PDAM, so the hope is that daily operational costs related to clean water needs can be minimized. From the results of the analysis and discussion, 2 (two) points of drilling recommendations were obtained, but with technical and non-technical considerations, exploration was suggested at point 3 with a potential of 4.2423 L / sec. Where at this location is a rock lithological arrangement consisting of a top soil layer, a clay layer, a tuff layer, a sandy silt layer, a sand layer and a gravel layer.

Meningkatkan Nilai Tambah Jaringan Irigasi dengan Pembangkit Listrik Tenaga Mikro Hidro (Studi Kasus – Ji Kedung Kandang)

“…Daya terbangkit dijadikan acuan untuk mendesain jenis turbin yang akan digunakan sebagai bahan pertimbangan terhadap perencanaan siteplan bangunan sipil. Selanjutnya berdasarkan pertimbangan kebutuhan masyarakat sekitar, maka dapat dikaji proyeksi PLTMH di jaringan irigasi (Darmawan et al, 2021b).…”

Changes in Runoff Coefficient Index as a Result of Land Use Change (Case Study: Malang City)

“…Overall, Indonesia's water resources are beset by long-term management issues that impede economic growth and result in decreased food security, hygienic conditions, and environmental harm. Of course, it also has an impact on the accessibility of clean water [3]. As in a number of other nations, comprehensive watershed management initiatives are required to address Indonesia's issue of harm to its watersheds and water resources [4].…”

“…Numerous categories serve as the foundation for land use regulations: Happiness, propensity for land use activities, awareness of land use, orientation, and aesthetic requirements are the first five factors [10]. The provision of clean raw water has a very important and strategic meaning for the people of Indonesia, especially those who live in areas where clean water is not available or in areas with limited water resources, not least for developing urban areas [3]. In conducting land use planning in an urban area, it must also be taken into account regarding the potential for disasters to occur [11].…”

Assessment of spatial changes of LULC dynamics, using multi temporal landsat data (case study: Lesti Sub Watershed, Malang Regency, Indonesia)

“…In general, water resources in Indonesia face long-term problems related to management that affect the country's economic development, causing reduced food security, public health and environmental damage. In addition, of course, it also affects the availability of clean water [3]. As in several other countries, in order to overcome the problem of damage to watersheds and water resources in Indonesia, integrated watershed management actions are needed [4].…”