Wybrane problemy związane z modelowaniem odpływu ze zlewni niekontrolowanych w aspekcie projektowania stref zagrożenia powodziowego

Edyta Drożdżal , Michał Piórecki , Radosław Radoń , Andrzej Wałęga

Abstract

The article assesses the impact of rainfall hyetograph shape and reaction time of the catchment on flow form the NRCS-UH model. Calculations were performed on the example of Młynówska catchment – left tributary of the Ropa river with area of 18,03 km2. To describe the precipitation method there were used: the Kupczyk and Suligowskiego method, hyetograph recommendati0ons by DVWK and beta distribution. The sensitivity of the model NRCS-UH for the input parameters were performed using the coefficient of elasticity. The abalysis showed that rainfall hyetograph influences the floodwave. Inn this study it was found that the largest peak flow obtained when DWVK rainfall hyetograph was use. NRCS –UH model is sensitive to changes in parameter CN-an increase of 1% CN parameter leads to an increase Qmax discharge by 1,1%. Less impact on the output values of the model plays a lag time.
Author Edyta Drożdżal
Edyta Drożdżal,,
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, Michał Piórecki
Michał Piórecki,,
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, Radosław Radoń
Radosław Radoń,,
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, Andrzej Wałęga (FoEEaLS / DoSEaWM)
Andrzej Wałęga,,
- Department of Sanitary Engineering and Water Management
Other language title versionsSome Problems of Hydrology Modelling of Outflow From Ungauged Catchments with Aspects of Flood Maps Design
Pages69-82
Publication size in sheets0.65
Book Więzik Beniamin (eds.): Problemy obliczania przepływów ekstremalnych w zlewniach kontrolowanych i niekontrolowanych : praca zbiorowa, Monografie Komitetu Gospodarki Wodnej Polskiej Akademii Nauk, vol. 2, no. 36, 2013, Komitet Gospodarki Wodnej Polskiej Akademii Nauk, 128 p.
Internal identifierWIŚIG/2013/218
Languagepl polski
Score (nominal)5
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