Development of river morphologic stability index (RMSI) to assess mountain river systems

Sulaiman, Mohd Sofiyan; Goh, Qiu You; Sang, Yan‐Fang; Sivakumar, Bellie; Ali, Asmadi; Rasit, Nazaitulshila; Abood, Manal Mohsen

doi:10.1016/j.ejrh.2021.100918

Cited by 4 publications

(4 citation statements)

References 28 publications

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“…The highest weightage is denoted as rank 1 for both GW and LW. As [62] discussed, the GW and LW are multiplied to obtain the highest weightage. Thus, the first rank in the influential parameters finds the overall rank.…”

Section: Discussionmentioning

confidence: 99%

Morphological Assessment of River Stability: Review of the Most Influential Parameters

et al. 2022

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River health assessments in the form of morphological approaches are crucial to determining the stability of a river system. Human interference in the natural river landscapes has altered the regime of river flows in the past. The catastrophes arising from the regime alteration are varied: excessive erosion and sedimentation, low carrying capacity, depletion of water yield, and many more. Past researchers have formulated numerous assessments to examine the stability of a river system. Still, arguments are prevalent due to the opinionated nature of the evaluation and a lack of parameters about river equilibrium. This paper reviews the past approaches to assessing channel stability by revisiting the most influential parameters adopted in the assessment process. An Analytical Hierarchy Process (AHP) was employed to find the prioritization of the selected parameters. This study found that a field survey is the most preferred method of river assessment instead of the other techniques such as remote sensing, modeling, and rapid field assessment. The most influential parameters (top 5) that determine the stability of a river system are (1) channel forms, (2) channel dimensions, (3) channel substrates, (4) channel pattern, and (5) bank profile. Those parameterizations are crucial to determining the stability of a river system.

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Section: Discussionmentioning

confidence: 99%

Morphological Assessment of River Stability: Review of the Most Influential Parameters

et al. 2022

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“…Hydromorphological assessment methods are essential tools for gaining an in-depth understanding to guide the most appropriate solutions for future restoration projects. The careful management of water resources is a fundamental pillar for ensuring the sustainability of river landscapes and guaranteeing a continuous supply of quality water [5]. In recent decades, agricultural intensification has resulted in significant soil degradation [6].…”

Section: Introductionmentioning

confidence: 99%

Prioritization of Hydrological Restoration Areas Using AHP and GIS in Dulcepamba River Basin in Bolivar–Ecuador

Sanchez,

Alvarez

2024

Hydrology

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In this study, we performed a preliminary soil analysis and collected environmental data for the Dulcepamba River Basin in Bolivar–Ecuador, before carrying out its hydrological restoration (HR). A geographic information system (GIS) and the multicriterion Analytical Hierarchy Process (AHP) decision-making method were used. The comprehensive evaluation included morphological aspects, soil properties, climatic conditions, vegetation, and land use. The terrain conditions were investigated using indicators such as the flow capacity, topographic moisture, soil resistance, sediment transport, current density, curve number, NDVI, precipitation, and distance to rivers. The results and analysis are presented in a series of maps, which establish a starting point for the HR of the Dulcepamba watershed. The key factors for assessing soil degradation in the watershed include land use, vegetation cover, sedimentation, humidity, and precipitation. Of the studied territory, 10.7 do not require HR, while 20.28% demand HR in the long term. In addition, 30.67% require HR in the short term, and 33.35% require HR immediately. Based on the findings, it is suggested that authorities consider the environmental remediation of the watershed and propose various HR measures. This analytical approach could prove valuable as a tool for the environmental restoration of watersheds in Ecuador.

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“…Typically, in the lower reaches of the Amu Darya River (even in the general erosion section), the unbreakable ratio of the average velocity (formula 1), so the channel is subject to intensive channel processes [5][6][7][8]. 0 5.0 6.0 v v ( 1 ) Where: v is unbreakable ratio; v 0 is average velocity As a result of the construction of large facilities for irrigation and energy in the riverbeds and their plains, river flow dynamics were sharply affected, which led to changes in river morphometry [9][10][11]. To ensure the safety of the facilities under construction, it is necessary to carry out forecast calculations of canal processes in the river channel, considering the impact of hydraulic and hydropower facilities on the flow dynamics [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…p Q B H V(10) Where: Q is Actual value of water flow rate; H is Stream depth; n is Actual value of roughness coefficient; λ is Hydraulic resistance; g is Acceleration due to gravity; C is Chezy coefficient; Q p is Estimated flow rate; B is channel width; H is channel width; V is Average flow velocity…”

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confidence: 99%

Dynamics of morphometric and hydraulic parameters of the Amudarya River channel downstream the Tuyamuyun hydroscheme

Maalem

Хujakulov

2023

E3S Web of Conf.

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The construction of large water reservoirs on level rivers has dramatically changed the nature and dynamics of channel processes in the upstream and downstream rivers. The purpose of the research is to study the relationship between the morphometry of the riverbed and the parameters of the waterworks rigged by the reservoir. To analyze the dynamics of the flow's channel morphometry and hydraulic elements, the lower course of the Amu Darya River, which is characterized by intense channel processes, was chosen. The study was carried out using field data on the Tuyamuyun gauge, located 1.8 km below the hydroelectric complex. The period for the last 25 years is covered, and 6 multi-year periods are selected from these. As a result of data analysis from long-term field studies and hydrometric measurements on the Tuyamuyun hydraulic section of the Amu Darya River, functional relationships have been established between the morphometric parameters of the channel and the hydraulic parameters of the flow. The relationship between the roughness of the channel and water flow is ambiguous. This is explained by the fact that the target is in the zone of the general spreading of the channel, and the bottom of the channel was observed to sink. When establishing the hydraulic resistance of the downstream, i.e., the relationship between the morphometric parameters of the channel and the hydraulic parameters of the flow, it is possible to predict changes in the water level and the state of water intake facilities. According to forecasts, it is possible to determine the type of event that allows for the supply of estimated flow rates through water intake facilities located in general erosion of the Tuyamuyun water reservoir.

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Development of river morphologic stability index (RMSI) to assess mountain river systems

Cited by 4 publications

References 28 publications

Morphological Assessment of River Stability: Review of the Most Influential Parameters

Morphological Assessment of River Stability: Review of the Most Influential Parameters

Prioritization of Hydrological Restoration Areas Using AHP and GIS in Dulcepamba River Basin in Bolivar–Ecuador

Dynamics of morphometric and hydraulic parameters of the Amudarya River channel downstream the Tuyamuyun hydroscheme

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