Improving Flood Forecasting in a Developing Country: A Comparative Study of Stepwise Multiple Linear Regression and Artificial Neural Network
Publikation: Beiträge in Zeitschriften › Zeitschriftenaufsätze › Forschung › begutachtet
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in: Water Resources Management, Jahrgang 28, Nr. 8, 06.2014, S. 2109-2128.
Publikation: Beiträge in Zeitschriften › Zeitschriftenaufsätze › Forschung › begutachtet
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TY - JOUR
T1 - Improving Flood Forecasting in a Developing Country
T2 - A Comparative Study of Stepwise Multiple Linear Regression and Artificial Neural Network
AU - Latt, Zaw Zaw
AU - Wittenberg, Hartmut
PY - 2014/6
Y1 - 2014/6
N2 - Due to limited data sources, practical situations in most developing countries favor black-box models in real time operations. In a simple and robust approach, this study examines performances of stepwise multiple linear regression (SMLR) and artificial neural network (ANN) models, as tools for multi-step forecasting Chindwin River floods in northern Myanmar. Future river stages are modeled using past water levels and rainfall at the forecasting station as well as at the hydrologically connected upstream station. The developed models are calibrated with flood season data from 1990 to 2007 and validated with data from 2008 to 2011. Model performances are compared for 1- to 5-day ahead forecasts. With a high accuracy, both candidate models performed well for forecasting the full range of flood levels. The ANN models were superior to the SMLR models, particularly in predicting the extreme floods. Correlation analysis was found to be useful for determining the initial input variables. Contribution of upstream data to both models could improve the forecasting performance with higher R 2 values and lower errors. Considering the commonly available data in the region as primary predictors, the results would be useful for real time flood forecasting, avoiding the complexity of physical processes.
AB - Due to limited data sources, practical situations in most developing countries favor black-box models in real time operations. In a simple and robust approach, this study examines performances of stepwise multiple linear regression (SMLR) and artificial neural network (ANN) models, as tools for multi-step forecasting Chindwin River floods in northern Myanmar. Future river stages are modeled using past water levels and rainfall at the forecasting station as well as at the hydrologically connected upstream station. The developed models are calibrated with flood season data from 1990 to 2007 and validated with data from 2008 to 2011. Model performances are compared for 1- to 5-day ahead forecasts. With a high accuracy, both candidate models performed well for forecasting the full range of flood levels. The ANN models were superior to the SMLR models, particularly in predicting the extreme floods. Correlation analysis was found to be useful for determining the initial input variables. Contribution of upstream data to both models could improve the forecasting performance with higher R 2 values and lower errors. Considering the commonly available data in the region as primary predictors, the results would be useful for real time flood forecasting, avoiding the complexity of physical processes.
KW - Environmental planning
KW - Artificial neural network
KW - Flood forecast
KW - Rainfall
KW - Real time operation
KW - Stepwise regression
KW - Water level
UR - http://www.scopus.com/inward/record.url?scp=84901037108&partnerID=8YFLogxK
U2 - 10.1007/s11269-014-0600-8
DO - 10.1007/s11269-014-0600-8
M3 - Journal articles
AN - SCOPUS:84901037108
VL - 28
SP - 2109
EP - 2128
JO - Water Resources Management
JF - Water Resources Management
SN - 0920-4741
IS - 8
ER -