gesjGEOGRAPHY, ENVIRONMENT, SUSTAINABILITYGEOGRAPHY, ENVIRONMENT, SUSTAINABILITY2071-93882542-1565Russian Geographical Society10.24057/2071-9388-2019-177gesj-1154Research ArticleSpecial Issue "Water sustainability at global, regional and national levels"Impact Of Channel Incision On Floods: A Case Study In The South-Eastern Subcarpathians (Romania)Ioana-ToroimacGabriela

Faculty of Geography

1 Nicolae Bălcescu, 010041, Bucharest

gabriela.toroimac@geo.unibuc.roZahariaLiliana

Faculty of Geography

1 Nicolae Bălcescu, 010041, Bucharest

NeculauGianina

97E Șos. București-Ploiești, 013686, Bucharest

MineaGabriel

97E Șos. București-Ploiești, 013686, Bucharest

University of BucharestRomaniaNational Institute of Hydrology and Water ManagementRomania2020240620201321724Copyright © Ioana-Toroimac G., Zaharia L., Neculau G., Minea G., 20202020Ioana-Toroimac G., Zaharia L., Neculau G., Minea G.Ioana-Toroimac G., Zaharia L., Neculau G., Minea G.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://ges.rgo.ru/jour/article/view/1154

Despite numerous researches on river channel incision, there are fewer studies on the impact of channel adjustments on floods. This paper aims to investigate channel adjustments and to analyse their impact on the frequency of floods by estimating the return period of the bankfull discharge of the Prahova River in the South-Eastern Subcarpathians (Romania). The study is based on the analysis of the maximum annual discharges and cross-section profiles of the Prahova River at Câmpina gauging station (1976–2015). To estimate the return period of the bankfull discharge, the log Pearson III distribution was used. Overall, the maximum depth and the cross-section area at the bankfull stage increased during the analysed period, indicating channel incision and lateral stability. The bankfull discharge of 1976 could be reached every year and the one of 2015 could occur almost every 5 years. Therefore, due to channel incision and increased channel capacity, overflowing the bankfull stage is a less frequent hazard on the Prahova River at Câmpina gauging station. River management appears to maintain this situation as no measure is taken to decrease channel incision.

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The authors declare that there are no conflicts of interest present.