Deliniasi dan analisis pola spasial Hidrologic Response Unit (HRU) pada DAS Progo berdasarkan multitemporal penggunaan lahan

• Main Authors: Tambunan, Bungaran Roy Satria, Santosa, Purnama Budi
• Format: Conference or Workshop Item PeerReviewed
• Language: English
• Published: 2018
• Subjects: Geomatic Engineering; Photogrammetry and Remote Sensing
• Online Access: https://repository.ugm.ac.id/276099/2/38%20SIIG%202018%20-%20Bungaran%20Roy.pdf; https://repository.ugm.ac.id/276099/; https://drive.google.com/file/d/1QjXUu8riWvl1ERj6O_ggkC-om_Av0Zoc/view
• Institution: Universitas Gadjah Mada

Watershed is a combination of waters and land areas where the boundary is topography of water separator. Watershed can be imagined as a sloping basin from upstream to downstream where rainwater that falls on the topographic boundary will flow into river. The end of the drainage system is in a single outlet that boils down to a larger body of water such as a river, lake, or sea. Hydrological characteristics of the watershed can be generated from Hydrologic Response Units (HRU). HRU is a hydrological analysis unit established on the basis of land use associations, soil types, and slope of land within the scope and relationships between sub - watershed. The similar physical characteristics of the entity have the same hydrological controls. The aim of this study was to obtain the delineation and spatial patterns of hydrologic response units (HRU) on Progo watershed based on landuse in 2006, 2011 and 2016. The criteria used to define the homogeneity of each HRU based on dynamically varying hydrology compared with its neighbors. The research results show that HRU formed in 2006 as many as 184, in 2011 as many as 194, and 2016 as many as 192. HRU is spread on 35 sub DAS formed based on DEM SRTM delineation done automatically. The change in the spatial pattern of HRU occurred due to the influence of significant landuse change from 2006 until 2016 with the class of land use of Plantation Forest increased by 27.04% and the dryland farms decreased by 31.2%.