Predictive models for the estimation of riverbank erosion rates

Saadon, Azlinda; Abdullah, Jazuri; Muhammad, Nur Shazwani; Ariffin, Junaidah; Juliën, Pierre Y.

doi:10.1016/j.catena.2020.104917

Cited by 21 publications

(9 citation statements)

References 23 publications

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“…The five sub‐reaches where woody riparian and floodplain vegetation is sparse show significant differences in their response to the 2019–2020 events (Table 3) with reach‐scale detrimental changes, such as the reworking, remobilisation and redeposition of exposed and partially vegetated sediments, becoming superimposed on more expectable year‐on‐year incremental meandering activity through lateral bank erosion. All the sub‐reaches showed enhanced rates of bank erosion during the period when the events occurred with an expected variation in the data related to such factors as bend curvature, bank geometry bank strength and resistance (Arnez Ferrel et al, 2018; Saadon et al, 2021).…”

Section: Discussionmentioning

confidence: 96%

The heterogeneous geomorphological impact of an exceptional flood event and the role of floodplain vegetation

Dawson,

Lewin

2023

Earth Surf Processes Landf

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Application of an integrated spatial approach combining several sources of remote sensing data to include both channel and floodplain morphological and sedimentological impacts has identified the geomorphological effects of three extreme flood events during a single flood season (2019–2020) along a 16‐km reach of the River Teme, UK. This combined approach allowed the assessment of in‐channel pattern development, incision and aggradation; lateral bank migration; and overbank sedimentation and scour by out‐of‐channel flows. Rates of change during the event period were compared with those in the previous 10 years. The approach also allowed the role of vegetation and cultivation, both bankside and out on floodplains, to be assessed with variations in the extent of riparian wood and channel slope driving contrasts in the extent of the response. The spatial impacts from such extreme events are highly localised, varied in kind, and can be considered for both rivers and floodplains together. Erosional effects were distinctively distributed and not simply contributions to ongoing meander development; channel aggradation was localised, and overbank sedimentation explicably patchy. In reaches without woody vegetation, differences in channel and floodplain slope, local floodplain relief as created by prior events, and the impact of man‐made structures were factors that drove variations in flood response. This study strongly underlines the role of continuous riparian vegetation in maintaining bank stability and constraining lateral channel migration, but also to the potential influence of floodplain vegetation and planting for ‘natural engineering’ in the context of floodplains as well as channels in comparable environments. Maintenance of riparian vegetation in the context of landowner and Natural England conflict and management of future flood risk is important, but also highlighted is the need to consider the role of hedgerows and wider planting for constraining soil and riverbank erosion during flood events.

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Section: Discussionmentioning

confidence: 96%

The heterogeneous geomorphological impact of an exceptional flood event and the role of floodplain vegetation

Dawson,

Lewin

2023

Earth Surf Processes Landf

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“…This study emphasizes the significance of the data population in developing prediction models employing mathematical, statistical, and artificial intelligence systems (Saadon et al, 2021;Saadon et al, 2020;Dobbin and Simon, 2011). The data splitting approach used in this research involved optimal split proportions, where 60% of the data was allocated for constructing the discharge rating curve, and the remaining 40% was dedicated to model validation.…”

Section: Methodsmentioning

confidence: 99%

“…Values within the range of 0.5 to 2.0 are considered accurate. This evaluation method has been widely employed in previous studies, including those by Ibrahim et al (2017), Sinnakaudan et al (2010), Saadon et al (2021Saadon et al ( , 2020. The generated stage-discharge function with a higher D.R.…”

Section: Figure 1 Flow Chart Of the Overall Methodologymentioning

confidence: 99%

Best Practice Approach to Stage-Discharge Rating Curve: Case Study of Selected Rivers in Selangor

Saadon,

Abdul Manaf,

Tholibon

et al. 2023

JSCET

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A stage-discharge rating curve represents the relationship between the water level at a given point in a stream and a corresponding volumetric rate of flow. It is widely used for the analysis of flow regimes, designing hydraulic structures, flood forecasting, flow-sediment interaction and prediction, and river channel analysis. The reliability and stability of the stage-discharge rating curve are based on numerous numbers of discharges and stage data from the lowest to the highest bank full stage observed over a long period of time. Stage-discharge rating curves contribute to reliable discharge prediction for future flood forecasting. This study focuses on the best-practice approach to stage-discharge rating curve development for selected rivers in Selangor. The stagedischarge rating curve derived was evaluated in terms of the statistical parameter, which denotes the degree of determination or r-squared value. The polynomial function yields better accuracy at 68.6% than the exponential function at 60.3%. Model validation was performed using the discrepancy ratio and confirmed that the stagedischarge rating curve developed using both mathematical functions give good predictions with more than 80% accuracy for the specified flow range and stage levels.

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“…The rate of riverbank erosion is significantly affected by parameters related to the pulses of water against the bank, changes in water level, the partitioning of rainfall between surface overland flows and subsurface pathways is a potentially significant driver of flood risk, as it determines the speed at which water is transferred from hillslope to the river channel (Pattison & Lane, 2012;Saadon et al, 2021).…”

Section: A Introductionmentioning

confidence: 99%

Riverbank Erosion in Part of Tibo Village, Donggala Regency

Maliki

2021

geoeco

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This study aims to identify riverbank erosion in some Tibo villages, Sindue Tambusabora District, Donggala Regency. This type of research is descriptive qualitative with a spatial approach. The data analysis technique used in this study includes a qualitative descriptive analysis in the form of a unit analysis of the area of landform from the fluvial process in Tibo Village, Sindue Tambusabora District, Donggala Regency. The data used in this study include primary data and secondary data. Primary data are the results of field ground checks and direct measurements, while secondary data are Landsat 8 OLI images and RBI maps of 1:50,000 scale 2015-65. This type of research is descriptive qualitative with a spatial approach. The data analysis technique used in this study includes a qualitative descriptive analysis in the form of a unit analysis of the landform area from which the fluvial process originated in the village of Tibo. Mild to moderate erosion and sedimentation rates. Erosion of cliffs is very high, especially at the bend of the river where erosion occurs due to high river discharge so that many charred rivers are found in Tibo village due to high erosion and sedimentation.

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Predictive models for the estimation of riverbank erosion rates

Cited by 21 publications

References 23 publications

The heterogeneous geomorphological impact of an exceptional flood event and the role of floodplain vegetation

The heterogeneous geomorphological impact of an exceptional flood event and the role of floodplain vegetation

Best Practice Approach to Stage-Discharge Rating Curve: Case Study of Selected Rivers in Selangor

Riverbank Erosion in Part of Tibo Village, Donggala Regency

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