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Estimation of instantaneous peak flows from mean daily flows

In: Acta Hydrologica Slovaca, vol. 20, no. 1
Hana Hlaváčiková - Michaela Bírová - Eva Kopáčiková
Detaily:
Rok, strany: 2019, 3 - 9
Jazyk: slo
Kľúčové slová:
hydrograph, linear-regression, water gauging stations, basin area
URL originálneho zdroja: http://www.ih.sav.sk/ah
O článku:
Instantaneous peak flows are needed for several water management tasks. However, they are not always available. More disponible are often mean daily flows. In this work, relationship between instantaneous peak flows and mean daily flows for 26 Slovak water gauging stations was estimated according to two methods. The first method was the simple linear-regression method (LR method), the second one was the so-called slope-based method (Chen method) which is based on an analysis of three consecutive mean daily flows and takes into account the hydrograph shape. Results showed that the LR method is for given water gauging stations comparable to the Chen method. The LR method provides an instantaneous peak flow estimation with a mean relative error in the range of 1.8–19.8% (the smallest error is for large basins). Moreover, for all water gauging stations, the LR conversion factors (instantaneous peak over maximum mean daily flow ratio) were derived. Resulting values varied between 1 for large watersheds, up to 1.3 to 1.6 for smaller watersheds, for which higher flow variability is typical
Ako citovať:
ISO 690:
Hlaváčiková, H., Bírová, M., Kopáčiková, E. 2019. Estimation of instantaneous peak flows from mean daily flows. In Acta Hydrologica Slovaca, vol. 20, no.1, pp. 3-9. 2644-4690. DOI: https://doi.org/10.31577/ahs-2019-0020.01.0001

APA:
Hlaváčiková, H., Bírová, M., Kopáčiková, E. (2019). Estimation of instantaneous peak flows from mean daily flows. Acta Hydrologica Slovaca, 20(1), 3-9. 2644-4690. DOI: https://doi.org/10.31577/ahs-2019-0020.01.0001
O vydaní:
Vydavateľ: Institute of Hydrology SAS, Dúbravská cesta 9, 841 05 Bratislava, Slovakia
Publikované: 11. 6. 2019