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Predicted small catchment responses to heavy rainfalls with SEGMO and two sets of model parameters

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Krajewski A., Lee H., Hejduk L., Banasik K.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

2014

tom 46

nr 3

The study tests the ability of hydrological part of SEGMO (SedimentGraph Model), i.e. lumped parametric rainfall-runoff procedure of SEGMO to simulate design storm runoff in a Korean catchment. The aim of the investigation is to predict responses of small catchment of the Jeungpyeong river, located in central part of South Korea, with the area of 133.6 km2, to 100-year rainfall events, applying SEGMO and using two parallel approaches for model parameter estimation. The first approach is based on catchment characteristics and USDA-SCS procedures, which is suitable for ungauged basins, and the other one is based on rainfall-runoff measurements. The way of estimation of model parameters has been demonstrated. Finally, the model outputs are compared. The difference in largest peak discharges obtained from SEGMO with the two sets of model parameters, i.e. when estimated on the base of catchment characteristics and USDA-SCS procedures, and on the base of rainfall-runoff measurements were relatively small, approaching 37%. This investigation can be seen as checking the uncertainties in model parameter estimation and their influence on flood flows.

Ograniczanie wyników

1 Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

1 Banasik K.

1 Hejduk L.

1 Krajewski A.

1 Lee H.

1 2014

Wyniki wyszukiwania

Predicted small catchment responses to heavy rainfalls with SEGMO and two sets of model parameters