The Experts below are selected from a list of 267 Experts worldwide ranked by ideXlab platform

Lesty Arlensietami - One of the best experts on this subject based on the ideXlab platform.

  • KAJI ULANG OPERASI PINTU Spillway WADUK WONOGIRIUNTUK PENGENDALIAN BANJIRDI WILAYAH SUNGAI BENGAWAN SOLO HULU
    2011
    Co-Authors: Lesty Arlensietami, M.eng. Ir. Rachmad Jayadi
    Abstract:

    Bengawan Solo often produces flooding and creates sufficient damage and loss. One of flood control efforts in the upstream Bengawan Solo River Basin is conducted through the operation of Wonogiri Reservoir during flood season. Changes in land use and characteristics of high resolution rainfall in the catchment area of Wonogiri Reservoir allow changes of inflow hydrograph. Therefore, a study to evaluate the operational pattern of Wonogiri Reservoir and to improve the performance of flood control is urgently required. Two important analyses are carried out to clarify the flood control issue, i.e. inflow flood hydrograph based on the current land use and the operating rule of Spillway Gates for flood period. The current inflow flood hydrographs are obtained by using a semi distributed rainfall-runoff model. For this purpose the 2, 60, 500 and 5500 (PMF) year return period of flood hydrographs are simulated with input the calibrated watershed parameters and hourly design rainfall distribution of the current condition. The hydrologic simulation results are then used to simulate several scenarios of reservoir flood routings for obtaining the optimum Spillway Gates operation. The optimum flood control is determined by considering the controlled water level (+ 135.3 m MSL) and the extra flood water level (+ 139.1 m MSL) as the critical boundaries of water level during flood period. The results of the study indicate that the watershed response to the peak discharge changes considerably. The current land use produces flood inflow hydrographs that higher than the design flood hydrographs, both peak discharge and total runoff volume. For the Spillway Gates operation, it is found that the operating rule for the PMF has to be modified. In order to avoid high risk of dam over-topping, full opening gate is operated when the water level in the reservoir reaches +136.6 m MSL instead of +138.2 m MSL. Besides, the Spillway Gates operation time should be monitored every 15 minutes when the water level reaches +136.4 m MSL and outflow discharge arrangement is a multiple of 50 m 3 /s. Generally, it is concluded that Wonogiri Reservoir is still able to control the extreme floods with special consideration for the PMF. Real time flood forecasting facility is necessary to improve the performance of reservoir operation for flood control purpose.

  • KAJI ULANG OPERASI PINTU Spillway WADUK WONOGIRI UNTUK PENGENDALIAN BANJIR DI WILAYAH SUNGAI BENGAWAN SOLO HULU
    [Yogyakarta] : Universitas Gadjah Mada, 2011
    Co-Authors: Lesty Arlensietami, Dr. Ir. Rachmad Jayadi M.eng.
    Abstract:

    Bengawan Solo often produces flooding and creates sufficient damage and loss. One of flood control efforts in the upstream Bengawan Solo River Basin is conducted through the operation of Wonogiri Reservoir during flood season. Changes in land use and characteristics of high resolution rainfall in the catchment area of Wonogiri Reservoir allow changes of inflow hydrograph. Therefore, a study to evaluate the operational pattern of Wonogiri Reservoir and to improve the performance of flood control is urgently required. Two important analyses are carried out to clarify the flood control issue, i.e. inflow flood hydrograph based on the current land use and the operating rule of Spillway Gates for flood period. The current inflow flood hydrographs are obtained by using a semi distributed rainfall-runoff model. For this purpose the 2, 60, 500 and 5500 (PMF) year return period of flood hydrographs are simulated with input the calibrated watershed parameters and hourly design rainfall distribution of the current condition. The hydrologic simulation results are then used to simulate several scenarios of reservoir flood routings for obtaining the optimum Spillway Gates operation. The optimum flood control is determined by considering the controlled water level (+ 135.3 m MSL) and the extra flood water level (+ 139.1 m MSL) as the critical boundaries of water level during flood period. The results of the study indicate that the watershed response to the peak discharge changes considerably. The current land use produces flood inflow hydrographs that higher than the design flood hydrographs, both peak discharge and total runoff volume. For the Spillway Gates operation, it is found that the operating rule for the PMF has to be modified. In order to avoid high risk of dam over-topping, full opening gate is operated when the water level in the reservoir reaches +136.6 m MSL instead of +138.2 m MSL. Besides, the Spillway Gates operation time should be monitored every 15 minutes when the water level reaches +136.4 m MSL and outflow discharge arrangement is a multiple of 50 m 3 /s. Generally, it is concluded that Wonogiri Reservoir is still able to control the extreme floods with special consideration for the PMF. Real time flood forecasting facility is necessary to improve the performance of reservoir operation for flood control purpose

Dr. Ir. Rachmad Jayadi M.eng. - One of the best experts on this subject based on the ideXlab platform.

  • KAJI ULANG OPERASI PINTU Spillway WADUK WONOGIRI UNTUK PENGENDALIAN BANJIR DI WILAYAH SUNGAI BENGAWAN SOLO HULU
    [Yogyakarta] : Universitas Gadjah Mada, 2011
    Co-Authors: Lesty Arlensietami, Dr. Ir. Rachmad Jayadi M.eng.
    Abstract:

    Bengawan Solo often produces flooding and creates sufficient damage and loss. One of flood control efforts in the upstream Bengawan Solo River Basin is conducted through the operation of Wonogiri Reservoir during flood season. Changes in land use and characteristics of high resolution rainfall in the catchment area of Wonogiri Reservoir allow changes of inflow hydrograph. Therefore, a study to evaluate the operational pattern of Wonogiri Reservoir and to improve the performance of flood control is urgently required. Two important analyses are carried out to clarify the flood control issue, i.e. inflow flood hydrograph based on the current land use and the operating rule of Spillway Gates for flood period. The current inflow flood hydrographs are obtained by using a semi distributed rainfall-runoff model. For this purpose the 2, 60, 500 and 5500 (PMF) year return period of flood hydrographs are simulated with input the calibrated watershed parameters and hourly design rainfall distribution of the current condition. The hydrologic simulation results are then used to simulate several scenarios of reservoir flood routings for obtaining the optimum Spillway Gates operation. The optimum flood control is determined by considering the controlled water level (+ 135.3 m MSL) and the extra flood water level (+ 139.1 m MSL) as the critical boundaries of water level during flood period. The results of the study indicate that the watershed response to the peak discharge changes considerably. The current land use produces flood inflow hydrographs that higher than the design flood hydrographs, both peak discharge and total runoff volume. For the Spillway Gates operation, it is found that the operating rule for the PMF has to be modified. In order to avoid high risk of dam over-topping, full opening gate is operated when the water level in the reservoir reaches +136.6 m MSL instead of +138.2 m MSL. Besides, the Spillway Gates operation time should be monitored every 15 minutes when the water level reaches +136.4 m MSL and outflow discharge arrangement is a multiple of 50 m 3 /s. Generally, it is concluded that Wonogiri Reservoir is still able to control the extreme floods with special consideration for the PMF. Real time flood forecasting facility is necessary to improve the performance of reservoir operation for flood control purpose

Dr. Ir. Rachmad Jayadi M. Eng. - One of the best experts on this subject based on the ideXlab platform.

  • PENGEMBANGAN MODEL HIDROLOGI-HIDRAULIKA UNTUK PENGENDALIAN BANJIR WILAYAH SUNGAI BENGAWAN SOLO HULU
    [Yogyakarta] : Universitas Gadjah Mada, 2012
    Co-Authors: Ridwan Fauzi Rakhman, Dr. Ir. Rachmad Jayadi M. Eng.
    Abstract:

    Flood control of the upper Bengawan Solo River basin that conducted by the Wonogiri Reservoir authority is related to the decision making process for Spillway Gates opening operation so that excess outflow does not occur in the downstream area. The decision-making have to be done rapidly and accurately which is supported by an integrated information system such as flood forecasting and reservoir flood routing. Research on the development of hydrologic models to estimate flood inflow hydrograph, reservoir flood routing, and the characteristics of flood hydrograph in downstream area of the reservoir has been done, but still as partial work. Therefore it is required a hydrology-hydraulics model that able to integrate the developed partial models. This model will be used as supporting information systems in decision-making process for Spillway Gates opening operation. Thus flood control implementation in the upper Bengawan Solo River is expected to be done in an integrated and more effective than ever before. The decision support software for Spillway Gates opening operation on the flood period was developed using Visual Basic and MySQL. There are two simulation process on this application. First, flood forecasting simulation is to estimate flood inflow hydrograph based on realtime rainfall information obtained from 14 rain gauge stations in 8 watershed�s Wonogiri Reservoir. Second, reservoir flood routing simulation is to obtain the Spillway Gates opening operation based on reservoir water level and discharge outflow in accordance with the guidelines of reservoir operations during the flood period and flood control criteria have been established. The results of the study showed the realtime results of hydrology network monitoring can be directly to be used for forecasting flood hydrograph entering Wonogiri Reservoir. Then, based on reservoir water level information and initial Spillway Gates opening, optimal Spillway Gates opening operation will be calculated at every considered time of operation. This application is expected to be used by the Wonogiri Reservoir authority as decision support information systems related to the Spillway Gates opening operation during the flood period

M.eng. Ir. Rachmad Jayadi - One of the best experts on this subject based on the ideXlab platform.

  • KAJI ULANG OPERASI PINTU Spillway WADUK WONOGIRIUNTUK PENGENDALIAN BANJIRDI WILAYAH SUNGAI BENGAWAN SOLO HULU
    2011
    Co-Authors: Lesty Arlensietami, M.eng. Ir. Rachmad Jayadi
    Abstract:

    Bengawan Solo often produces flooding and creates sufficient damage and loss. One of flood control efforts in the upstream Bengawan Solo River Basin is conducted through the operation of Wonogiri Reservoir during flood season. Changes in land use and characteristics of high resolution rainfall in the catchment area of Wonogiri Reservoir allow changes of inflow hydrograph. Therefore, a study to evaluate the operational pattern of Wonogiri Reservoir and to improve the performance of flood control is urgently required. Two important analyses are carried out to clarify the flood control issue, i.e. inflow flood hydrograph based on the current land use and the operating rule of Spillway Gates for flood period. The current inflow flood hydrographs are obtained by using a semi distributed rainfall-runoff model. For this purpose the 2, 60, 500 and 5500 (PMF) year return period of flood hydrographs are simulated with input the calibrated watershed parameters and hourly design rainfall distribution of the current condition. The hydrologic simulation results are then used to simulate several scenarios of reservoir flood routings for obtaining the optimum Spillway Gates operation. The optimum flood control is determined by considering the controlled water level (+ 135.3 m MSL) and the extra flood water level (+ 139.1 m MSL) as the critical boundaries of water level during flood period. The results of the study indicate that the watershed response to the peak discharge changes considerably. The current land use produces flood inflow hydrographs that higher than the design flood hydrographs, both peak discharge and total runoff volume. For the Spillway Gates operation, it is found that the operating rule for the PMF has to be modified. In order to avoid high risk of dam over-topping, full opening gate is operated when the water level in the reservoir reaches +136.6 m MSL instead of +138.2 m MSL. Besides, the Spillway Gates operation time should be monitored every 15 minutes when the water level reaches +136.4 m MSL and outflow discharge arrangement is a multiple of 50 m 3 /s. Generally, it is concluded that Wonogiri Reservoir is still able to control the extreme floods with special consideration for the PMF. Real time flood forecasting facility is necessary to improve the performance of reservoir operation for flood control purpose.

Adéle Wallin - One of the best experts on this subject based on the ideXlab platform.