Indonesian Journal of Geography
Vol 51, No 3 (2019): Indonesian Journal of Geography

Conservation Design and Scenario for Flood Mitigation on Arui Watershed, Indonesia

Mahmud Mahmud (Doctoral Program of Forest Science, Universitas Gadjah Mada, Yogyakarta, Indonesia and Faculty of Forestry, University of Papua, Manokwari Papua Barat, Indonesia)
Ambar Kusumandari (Faculty of Forestry, Universitas Gadjah Mada, Yogyakarta, Indonesia)
Sudarmadji Sudarmadji (Faculty of Geography, Universitas Gadjah Mada, Yogyakarta, Indonesia)
Nunuk Supriyatno (Faculty of Forestry, Universitas Gadjah Mada, Yogyakarta, Indonesia)



Article Info

Publish Date
31 Dec 2019

Abstract

Flooding has been natural disaster in Indonesia and elsewhere. This research is designed to create scenarios and designs conservation to mitigate flooding disaster.  Data potential ,vulnerability, and duplicated river covering 0.25% of the targeted flooding area were collected and analysed. Five disain of conservation, natural river as control, river normalization, normalization with gabion stone, river straigtening, and straigtening with gabion stone, are proposed, and main targeted responses of these five scenarios are river current velocity. Effectiveness scenarios were analysed using Anova and Tukey test. The results showed that alignment with gabion stone was the most effective scenario for flooding mitigation since this was the most effective in increasing river current velocity. This could prevent riverbank occurrence of avalanche, accelerate river current, overcome flooding, and prevent future flooding. Other scenarios likes dead clicth ended-hallway, canalization, and riparian reclamation are also possible implemented.

Copyrights © 2019






Journal Info

Abbrev

ijg

Publisher

Subject

Earth & Planetary Sciences

Description

Indonesian Journal of Geography ISSN 2354-9114 (online), ISSN 0024-9521 (print) is an international journal of Geography published by the Faculty of Geography, Universitas Gadjah Mada in collaboration with The Indonesian Geographers Association. Our scope of publications includes physical geography, ...