A Study of Flood Causal Priority in Arui Watershed, Manokwari Regency, Indonesia
Papua is the final fortress of forests in Indonesia. However, floods recently occurred in Jayapura, Paniai, and Manokwari. If causal factors are not identified and early anticipated, the flood will become an annual disaster with more severe impacts. This study aims to identify main factors causing f...
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| Format: | Article |
| Language: | English |
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Bogor Agricultural University
2018-08-01
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| Series: | Jurnal Manajemen Hutan Tropika |
| Subjects: | |
| Online Access: | https://ilkom.journal.ipb.ac.id/index.php/jmht/article/view/21380 |
| _version_ | 1811309730474229760 |
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| author | Mahmud Mahmud Ambar Kusumandari Sudarmadji Sudarmadji Nunuk Supriyatno |
| author_facet | Mahmud Mahmud Ambar Kusumandari Sudarmadji Sudarmadji Nunuk Supriyatno |
| author_sort | Mahmud Mahmud |
| collection | DOAJ |
| description | Papua is the final fortress of forests in Indonesia. However, floods recently occurred in Jayapura, Paniai, and Manokwari. If causal factors are not identified and early anticipated, the flood will become an annual disaster with more severe impacts. This study aims to identify main factors causing floods using scoring analysis. Data collected include: rainfall, river gradient, water discharge, drainage density, watershed shape, slope and land use. The research results show that the main factor of floods are average daily rainfall in wet month by 86.53 mm day-1 (rather high) with a score of 28, land use dominated by forest and plantation (rather low and medium) with a score of 21, watershed slope dominated by 1-<8% (high) with a score of 5, drainage density of 6.4 (medium) with a score of 3, watershed shape (Rc of 0.30 < Re 0.71) with somewhat/elongated shape with a score of 2, and river gradient of 0.0062 (low) with a score of 2 respectively. High rainfall causes greater flow of water and runoff. Land use dominated by plantations (21.46%) is thought to be one of the main causes of floods in Masni District. Flood mitigation does not mean that rain should be reduced, but regulates/manages such as stopping the conversion of forest into palm oil plantations, reducing surface runoff by applying soil conservation, making bypass from meandering, dredging sediments, and constructing retaining walls. |
| first_indexed | 2024-04-13T09:47:24Z |
| format | Article |
| id | doaj.art-4d1e99987976478ba9159e9785058bd9 |
| institution | Directory Open Access Journal |
| issn | 2087-0469 2089-2063 |
| language | English |
| last_indexed | 2024-04-13T09:47:24Z |
| publishDate | 2018-08-01 |
| publisher | Bogor Agricultural University |
| record_format | Article |
| series | Jurnal Manajemen Hutan Tropika |
| spelling | doaj.art-4d1e99987976478ba9159e9785058bd92022-12-22T02:51:42ZengBogor Agricultural UniversityJurnal Manajemen Hutan Tropika2087-04692089-20632018-08-01242A Study of Flood Causal Priority in Arui Watershed, Manokwari Regency, IndonesiaMahmud Mahmud0Ambar KusumandariSudarmadji SudarmadjiNunuk SupriyatnoMAHMUD Fraser UniversityPapua is the final fortress of forests in Indonesia. However, floods recently occurred in Jayapura, Paniai, and Manokwari. If causal factors are not identified and early anticipated, the flood will become an annual disaster with more severe impacts. This study aims to identify main factors causing floods using scoring analysis. Data collected include: rainfall, river gradient, water discharge, drainage density, watershed shape, slope and land use. The research results show that the main factor of floods are average daily rainfall in wet month by 86.53 mm day-1 (rather high) with a score of 28, land use dominated by forest and plantation (rather low and medium) with a score of 21, watershed slope dominated by 1-<8% (high) with a score of 5, drainage density of 6.4 (medium) with a score of 3, watershed shape (Rc of 0.30 < Re 0.71) with somewhat/elongated shape with a score of 2, and river gradient of 0.0062 (low) with a score of 2 respectively. High rainfall causes greater flow of water and runoff. Land use dominated by plantations (21.46%) is thought to be one of the main causes of floods in Masni District. Flood mitigation does not mean that rain should be reduced, but regulates/manages such as stopping the conversion of forest into palm oil plantations, reducing surface runoff by applying soil conservation, making bypass from meandering, dredging sediments, and constructing retaining walls.https://ilkom.journal.ipb.ac.id/index.php/jmht/article/view/21380floodrainfallland useslopesArui watershed |
| spellingShingle | Mahmud Mahmud Ambar Kusumandari Sudarmadji Sudarmadji Nunuk Supriyatno A Study of Flood Causal Priority in Arui Watershed, Manokwari Regency, Indonesia Jurnal Manajemen Hutan Tropika flood rainfall land use slopes Arui watershed |
| title | A Study of Flood Causal Priority in Arui Watershed, Manokwari Regency, Indonesia |
| title_full | A Study of Flood Causal Priority in Arui Watershed, Manokwari Regency, Indonesia |
| title_fullStr | A Study of Flood Causal Priority in Arui Watershed, Manokwari Regency, Indonesia |
| title_full_unstemmed | A Study of Flood Causal Priority in Arui Watershed, Manokwari Regency, Indonesia |
| title_short | A Study of Flood Causal Priority in Arui Watershed, Manokwari Regency, Indonesia |
| title_sort | study of flood causal priority in arui watershed manokwari regency indonesia |
| topic | flood rainfall land use slopes Arui watershed |
| url | https://ilkom.journal.ipb.ac.id/index.php/jmht/article/view/21380 |
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