Applicability of geomorphological approaches combined with the modified Clark’s model for flood hydrograph estimation

Ogassawara, Jéssica Fernanda; Beskow, Samuel; Prá, Mauricio Dai; Moura, Maíra Martim de; Vargas, Marcelle Martins; Merwade, Venkatesh; Mello, Carlos Rogério de

doi:10.1016/j.catena.2022.106200

Cited by 2 publications

(1 citation statement)

References 65 publications

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“…Basically, the GUH or GIUH models relate the hydrological response of the ungauged watershed to its geomorphologic characteristics which ultimately provide simple rainfall-runoff model (Kumar, 2015). In literature, extensive efforts have been made to accurately predict the runoff hydrograph ordinates given the geomorphologic characteristics of the ungauged watershed in Jordan and worldwide (Kumar, 2015;Hosseini et al, 2016;Ghumman et al, 2017;Bamufleh et al, 2020;Obeidat et al 2021;Ogassawara et al, 2022;Shatnawi and Ibrahim, 2022).…”

Section: Introductionmentioning

confidence: 99%

Simulating the 1-hr Unit Hydrograph for the Ungauged Watershed of Swaqa

Tarawneh

Global NEST International Conference on Environmental Science &Amp; Technology

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This study uses QGIS-3.28 to extract the geomorphological features for the ungauged watershed of Swaqa and employs SWMM-5.2 to simulate its 1-hr unit hydrograph (UH). Visualizing the watershed as an impervious surface of virtual curve number equals 100 subjected to an effective rainfall of 1cm depth, the SWMM has successfully simulated the 1-hr UH after computing the watershed width as this study proposes. The simulated 1-hr UH follows the common pattern of synthetic UHs. It has peak flow of 133m3/s which requires 4.5 hours to attain its value after the runoff has begun. The watershed has lag-time of 4 hours and it drains rainwater to around 45 hours. The derived UH is useful to obtain storm hydrograph for flood analysis and rainwater harvesting studies in the arid region of Swaqa. From regression analysis, a strong relationship was observed between the UH peak flow and the geomorphological attributes of the watershed. Based on that, this study introduces a general equation to predict the UH peak flow given the watershed area, stream length, surface roughness and slope. The predicted peak flow is close to the SWMM simulated value; therefore, this equation is useful to construct synthetic UHs for ungauged watersheds.

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Section: Introductionmentioning

confidence: 99%

Simulating the 1-hr Unit Hydrograph for the Ungauged Watershed of Swaqa

Tarawneh

Global NEST International Conference on Environmental Science &Amp; Technology

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Research on the distributed Clark confluence model based on basic watershed units

Zhu,

Liu,

Zhou

et al. 2024

Journal of Water and Climate Change

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Based on the confluence principle, the confluence should represent the aggregate of net rainfall confluences within each distinct basic watershed unit (BWU) of a basin. The BWUs are categorized as V-type and Horseshoe-type based on their shape characteristics and two types of time–area curves of slope convergence have been derived separately. The cascade river convergence is modeled using a lagged linear reservoir, resulting in the development of a distributed CLARK convergence model based on the BWUs of a basin (BWU-DCLARK). The key findings are as follows: (1) The BWU-DCLARK model effectively captures the runoff convergence process and has been successfully applied in the Yanduhe River basin. Modeling results demonstrate high simulation accuracy. (2)The time of slope convergence indicate that the regulatory and storage effects on runoff of BWUs cannot be overlooked. (3)The BWU-DCLARK confluence model not only enables the calculation of flow at the basin outlet but also facilitates the computation of flow at any node along the river chain which is of great significance for hydrological forecasting in un-gauged basins but the application effect will need further verification.

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Applicability of geomorphological approaches combined with the modified Clark’s model for flood hydrograph estimation

Cited by 2 publications

References 65 publications

Simulating the 1-hr Unit Hydrograph for the Ungauged Watershed of Swaqa

Simulating the 1-hr Unit Hydrograph for the Ungauged Watershed of Swaqa

Research on the distributed Clark confluence model based on basic watershed units

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