Assessment of Deli Watershed Flood that Caused Some Damage in Medan City, Indonesia

Journal of Rangeland Science

مقاله 9، دوره 9، شماره 3، مهر 2019، صفحه 300-312   

نوع مقاله: Research and Full Length Article

نویسنده

Sumihar Hutapea^*

Medan Area University, Medan, Indonesia

چکیده

The watershed (DAS) Deli is one of the priority watersheds in the Medium Term Development Plan in 2010-2014 according to the Ministry of Forestry decree (SK 328/Menhut-II/2009), Indonesia. DAS is a complex ecological system in which there is a dynamic equilibrium between the incoming material energy (input) and the material out (output). Naturally, the change in input and output balance is slow and does not pose a threat to humans and environmental sustainability on a watershed system with continuous land-use dynamics from dense vegetation forms to rare vegetation forms or from vegetation forms to non-vegetation forms. It has been concluded that Deli watershed land destruction is dominated by biophysical factors, especially land use, slope, landform, and rainfall in upstream Deli sub-watershed. This is what causes flooding in Medan city, Indonesia. The cause is extreme rainfall so that a number of rivers such as Deli River and Babura River overflowed, the water level of the Deli and Babura Rivers almost reached the bridge section and this was scarce.

کلیدواژه‌ها

Deli river؛ Watershed؛ Flood؛ Damage؛ Erosion

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