Water Catchment Zone Mapping for Watershed Management in Gesing Sub-Watershed, Purworejo
Water is a very important resource involved in almost all life processes on earth, especially for human life. The rapid growth of water consumption with a decrease in the quantity and quality of water sources certainly creates problems of water scarcity or even flooding, which already occurs in some areas of Indonesia. In the last decades, some areas in Purworejo District, Indonesia have experienced floods, landslides, and droughts. This condition indicates that there has been a water quantity problem in the watershed in Purworejo. This study tends to focus on water resource management in terms of management planning. The purpose of this research is to create a water catchment zone map with the integration of remote sensing methods and geographic information systems. Identification of potential water catchment considers several parameters, such as soil permeability, rainfall, soil surface type, slope, and groundwater level. The results map consists of five classes of water catchment zone in the Gesing Sub-watershed. The higher classes were found in the upper watershed and the center of the watershed, especially in the valley section of the river. The lower classes, such as in the center of the watershed were considered as suitable areas to protect the water quality. With the mapping of water catchment zone, it is expected that the government can make appropriate policies related to water resources management of each sub-watershed so that in the end the water supply problem-especially in terms of quantity-can be managed and controlled effectively.
Chandrashekar, H., Lokesh, K.V., Sameena, M., Roopa, Jyothi., Ranganna, G. 2015. GIS-Based Morphometric Analysis of Two Reservoir Catchments of Arkavati River, Ramanagaram District, Karnataka. Aquatic Procedia, Vol. 4, pp. 1345—1353.
Law Number 32 Year 2004 concerning Regional Government.
Lozán, José L., S. Meyer & L. Karbe. 2007. Water as the basis of life. In: Lozán, J. L., H. Grassl, P. Hupfer, L.Menzel & C.-D. Schönwiese. Global Change: Enough water for all?.Wissenschaftliche uswertungen, Hamburg.
Sindhu, Sadashivappa, A.S. Ravikumar, B.L. Shivakumar. 2015. Quantitative Analysis of Catchment Using Remote Sensing and Geographic Information System. Aquatic Procedia, Volume 4. Pages 1421-1428.
Sudaryatno. 2017. Catatan Kuliah Penginderaan Jauh untuk Hidrologi dan Pengelolaan Daerah Aliran Sungai. Yogyakarta: Fakultas Geografi.
United Nations. 2002. Indonesia Country Profile. World Summit on Sustainable Development being held in Johannesburg.
Wibowo, Mardi, 2006, Model Penentuan Kawasan Resapan Air untuk Perencanaan Tata Ruang Berwawasan Lingkungan, Jurnal Hidrosfir,1,1-7.
WWAP (United Nations World Water Assessment Programme). 2015. The United Nations World Water Development Report 2015: Water for a Sustainable World. Paris: UNESCO.
Copyright (c) 2019 Journal of Applied Geospatial Information
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright @2020. This is an open-access article distributed under the terms of the Creative Commons Attribution-ShareAlike 4.0 International License which permits unrestricted use, distribution, and reproduction in any medium. Copyrights of all materials published in JAGI are freely available without charge to users or / institution. Users are allowed to read, download, copy, distribute, search, or link to full-text articles in this journal without asking by giving appropriate credit, provide a link to the license, and indicate if changes were made. All of the remix, transform, or build upon the material must distribute the contributions under the same license as the original.