AREA ZONATION FOR THE APPLICATION OF RAIN HARVESTING METHOD IN STRUCTURAL MITIGATION FLOOD AT THE WATERSHED OF BENGAWAN SOLO BOJONEGORO DISTRICT
| Main Authors: | Arhananta, Arhananta, Purwanto, Joko, Manurung, Keni Christy, Lekatompessy, Kenny, Wahyu Nabillah, Muhammad Alhafiq, Teguh Paripurno. MT, Dr. Ir. Eko |
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| Format: | Article PeerReviewed application/pdf |
| Bahasa: | eng |
| Terbitan: |
, 2017
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/274129/1/PHT-11.pdf https://repository.ugm.ac.id/274129/ |
Daftar Isi:
- Flooding is a disaster for many regions in Indonesia. Bojonegoro is a district which every year has a high flood threat. The cause of flood from the reviewed through google earth imageryry, meteorological data, maps of topography, and hydrological data such of extents, discharge, and other data about watershed Bojonegoro. Area of Bojonegoro flood occur due to overflowing of bengawan solo rivers which the morphological is meandering river and have formed a bottle neck in the shape of the body area of the river. Sandbar river, meander scars, and oxbow lake on the imagerys which can be interpreted that the watershed of Bengawan Solo river part of Bojonegoro is the old stadia of which dominant the deposition of the erosion, and erosion running horizontally which allows shallowing the rivers. The average level of precipitation thatrelatively high and volume capacity reductions of the watershed makes flooding occurs every year. Rain harvesting method is the method of structural mitigation based on ecohydrology. Rain harvesting system has three basic elements that is namely the area of collection, conveyances system, and storage facilities. In this research emphasized at the elements of the collection area and flood prevention in the district of Bojonegoro which is the zonation area for application method of harvesting rain are in the headwater to the watershed of river solo Bojonegoro. The Application of zonation based on the composition of the constituent rocks and slope. Placing of rain harvesting methods applied in the watershed of bengawan solo that composed by loose material of sand to gravel, sandstone, and coarse grained of sedimentary rock, and placement in areas that have a flat to gentle slope. Keywords: Flood, Ecohydrology, Strutural Mitigation, Rain Harversting.