PENGEMBANGAN MODEL HIDROLOGI UNTUK ESTIMASI HIDROGRAF BANJIR INFLOW WADUK WONOGIRI
| Main Authors: | , Siti Rahmi Oktavia, , Dr. Ir. Rachmad Jayadi, M.Eng. |
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| Format: | Thesis NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2013
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/123574/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=63686 |
Daftar Isi:
- The problem related to flood control efforts in Wonogiri Reservoir is the uncertainty of the decision making process for the reservoir operation due to the lack of hydrologic information, such as the magnitude of flood hydrograph that will become inflow to Wonogiri Reservoir. A number of factors serving as the basis of the lack of hydrologic information, which is in the form of inflow hydrograph, lie on limited hydrology network monitoring on the catchment area and the AWLR as the control point used for analyzing the unit hydrographs, which has not been located on the basin outlet. Moreover, some basins in the catchment are ungauged watershed. Having such limitations, a study to develop specific rainfall-runoff model in terms of watershed areas characteristic is urgently required. . The The main objective in this study is to develop rainfall-runoff model for estimating inflow flood hydrographs which focused on the derivation of unit hydrographs on watershed main outlet. Simulation of reservoir operation was conducted to evaluate the performance of the model based on the real-time rainfall data, water level reservoir and discharge outflow observed. The resemblance of water level reservoir observed fluctuation and simulation result were used to evaluate the accuracy of both measured and simulated results of real-time flood hydrograph calculation. reservoir water level Based on real-time rainfall data input on 6-9 April 2013, the results of the study showed that the difference of the water balance between observation and simulation results of water level reservoir was around 0.042% with maximum deviation of 0.090% (about 10cm) of observation and simulation results was at +136.05 m MSL and +135.93 m MSL, respectively. This model is not absolutely perfect in overall. However, the results of development of rainfall-runoff model in terms of derivation of unit hydrograph on watershed main outlet for ungauged watershed is considered good enough to be used for estimating flood hydrograph for Wonogiri Reservoir.