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ITS » Proceeding » Teknik Sipil
Posted by umboro@ce.its.ac.id at 29/10/2015 09:18:53  •  1424 Views


RAINFALL-RUNOFF MODELING OF BENGAWAN SOLO CATCHMENT AREA WITH TANK MODEL USING IFAS

Author :
ASTUTI, HARY PUJI  ( 3112205901 )
LASMINTO, UMBORO    PATRIADI, ANDI




ABSTRAK

A flood forecasting by rainfall data or discharge has not been implied well in most of areas in Indonesia. It is caused by the existence of equipment so data will be uncompleted. Needed a modeling is to know runoff on each catchment area. Along with the development of satellite technology there is technology named Geographic Information System GIS which come with its application and program. A program is to make hydrology modeling using distributed and tank model called Integrated Flood Analysis System IFAS. In this case model will be made for Bengawan Solo Catchment Area. The purpose of model is to know how big the goodness of IFAS modeling when it will compare with measurement data. Problem of this case is how to make model of Bengawan Solo catchment area in IFAS parameter calibration of surface subsurface aquifer and river course. Next it also will find the best model according to discharge from AWLR Automatic Water Level Recording of Bengawan Solo using three types of tests Root Mean Square Error RMSE Nash and Volume Error VE. Watershed model of IFAS will be made in five type default 1 2 3 and 4 which each model will have different rate of parameter. Determination of parameter is taken by analysis of impact of each parameter to the graph shape. Changes of parameter will impact to the hydrograph. According to simulation model and three tests before the best model is model 4. Model 4 has RMSE 3.097 Nash 0.955 and VE 0.0000442. This model said as the best is under the limit of RMSE gain to zero Nash gain to one and VE under 5. Using three tests before parameter of model 4 will be validated to the same location but different period. Validation of model in different period will result performance which is not as good as before. In other hand the value of test is still under the edge. This model has rate value for RMSE 6.88 Nash 1.106 and VE 0.28.



KeywordsBengawan Solo catchment area; IFAS; modeling; rainfall; runoff; satellite
 
Subject:  Permodelan hujan
Date Create: 11/08/2015
Type: Text
Format: PDF
Language: English
Identifier: ITS-Proceeding-31114150000146
Collection ID: 31114150000146
Call Number: 681.76 Ast p


Source
Article of Proceedings

Coverage
ITS Community

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Proceedings of the 2nd Makassar International Conference on Civil Engineering (MICCE 2015)Makassar, Indonesia




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ITS-Proceeding-31114150000146-39252.pdf




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