Deriving the Floodplain in Rural Areas for High Exceedance Probability Having Limited Data Source

Haidu, Ionel; Györi, Maria-Mihaela; Humbert, J.

doi:10.30638/eemj.2016.201

Cited by 5 publications

(1 citation statement)

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“…land use, land cover, DEM, soil, river network, and slop). Mostly, coupling GIS and hydraulic models (Haidu, 2016) have been recommended for studying flood analysis and flood prediction (Győri et al, 2016;Haidu et al, 2017;Vojtek et al, 2019). A combination of GIS (Geographic Information System) and HEC-RAS (Hydrologic Engineering Center-River Analysis System) has a great capability in the simulation of flood hazard maps.…”

Section: Introductionmentioning

confidence: 99%

Gis-Based Flood Hazard Mapping Using Hec-Ras Model: A Case Study of Lower Mekong River, Cambodia

Kim¹,

Tantanee²,

Suparta³

2020

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Rivers are the main water sources for human and animals' lives. Unfortunately, they have been frequently damaged by flooding. Flooding has affected and threatened not only human's lives and infrastructures but also the environmental capital. This study aims to determine the application of flood frequency analysis integrated with the GIS and HEC-RAS models to prepare a multi-return period flood hazard map in the Lower Mekong River of Cambodia. A 30-year peak discharge (Kampong Cham gauging station) with a multireturn period of 10, 20, 50, and 100-years was estimated by using four distributions analysis. An EasyFit software is used to test the best distribution for the input of the HEC-RAS model to prepare the estimation of the corresponding floodplain areas. The results showed that Log-Pearson III distribution analysis of the return period of 10, 20, 50, 100 years is the best fits with the 52,208 m 3 /s, 54,990 m 3 /s, 59,381 m 3 /s, and 62,194 m 3 /s, respectively. The HEC-RAS calibration indicated a good agreement with observed data discharge 2011 and 2013. While the simulation model shows the return period of floods 10 and 20 years for the predicted depth of flooding is stable compared to the flood peaks of 2011 and 2013 discharges, but the conditions of other flood return periods are not stable. Overall, HEC-RAS with its flood hazard map is a model that can estimate the level of flood depth in the Lower Mekong River, Cambodia and is useful in providing information about the depth and characteristics of floods for river communities.

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Section: Introductionmentioning

confidence: 99%

Gis-Based Flood Hazard Mapping Using Hec-Ras Model: A Case Study of Lower Mekong River, Cambodia

Kim¹,

Tantanee²,

Suparta³

2020

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Romanian River Basins Lag Time Analysis. The SCS-CN Versus RNS Comparative Approach Developed for Small Watersheds

Voda

Sarpe

Voda

2018

Water Resour Manage

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Assessing Land Use/Land Cover Change and its Impact on Surface Runoff in the Southern Part of the Țibleș and Rodnei Mountains.

Strapazan¹,

Haidu²,

Kocsis³

2019

Air and Water Components of the Environment Conference

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There is an increasing need to assess and quantify the impact of land use/land cover changes, especially on surface runoff, due to rapid population growth. This study aims to investigate the land use/land cover (LULC) changes over time, for an intense rainfall event in Țibleș, Runc and Sălăuța watersheds, and their impacts on surface runoff for various antecedent moisture conditions (AMC). The GIS-based SCS-CN method and the CORINE land cover (CLC) databases for 2000, 2006 and 2012 laid the foundation for this research. Results indicated that even small land cover changes can significantly affect runoff on the short time scale, with quantitatively different effects regarding moisture conditions. The reduction in forest cover due to agricultural intensification and the conversion from pasture to cropland (especially between 2000 and 2006) resulted in higher surface runoff volumes. These changes mostly affected the middle and downstream catchments of the main rivers which means that over the years, the soil water retaining capacity has decreased.

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Deriving the Floodplain in Rural Areas for High Exceedance Probability Having Limited Data Source

Cited by 5 publications

References 0 publications

Gis-Based Flood Hazard Mapping Using Hec-Ras Model: A Case Study of Lower Mekong River, Cambodia

Gis-Based Flood Hazard Mapping Using Hec-Ras Model: A Case Study of Lower Mekong River, Cambodia

Romanian River Basins Lag Time Analysis. The SCS-CN Versus RNS Comparative Approach Developed for Small Watersheds

Assessing Land Use/Land Cover Change and its Impact on Surface Runoff in the Southern Part of the Țibleș and Rodnei Mountains.

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