Evaluation of River Bank Stability against Erosion and Management Practices of Taleghan River Bank Using LIN Method

Document Type : Research Article


1 MSc Student in Physical Geography, Faculty of Earth Sciences, Shahid Beheshti University, Tehran, Iran

2 PHD Student in Physical Geography, Faculty of Earth Sciences, Shahid Beheshti University Tehran, Iran

3 Associate Professor, Department of Physical Geography, Faculty of Earth Sciences, Shahid Beheshti University Tehran, Iran


Erosion and sediment transport are the important hydrodynamic processes in drainage basins that can affect many hydraulic and hydrologic systems such as rivers, beaches, ports, dams, bridges, roads, and farms. One of the most important sediment sources in Iran drainage basin is bank channel erosion that causes on-site and off-site effects. Therefore, investigating of channel/river band instability is necessary for engineering activities to stabilize the riverbank against bank erosion. Thus, the main objectives of this study were to investigate the instability coefficient of the Taleghan River and to find the engineering solution for its stabilization by using the Lin model. In view of this, all required parameters comprising slope, shear stress, slope angle, and satiability coefficient of grain are measured using filed study and Google earth imagery. Finally, bank satiability coefficient and effective rock size for revetment besides the riverbank is obtained in the study area. According to the results, the highest amount of bank erosion and consequently (0.0002,0.0001), the lowest stability coefficient and the largest stone at the threshold (0.33, 0.48) and effective on revetment are related to the 4th section. The lowest amount of erosion, as a result, the highest range of stability coefficient (0.002,0.017) and smallest stone at the threshold (0.75, 0.95) and effective on revetment is related to the 1st section. The main reason could be the size of the grain size on the side, the slope of the basin, slope aside and bank full discharge width. Depending on the location of the area, the best way to prevent bank erosion is to create rip rap on the sides of the high erosion.


[1]. Bertrand F, and Papanicolaou AN. Effects of Freezing and Thawing Process on Bank Stability, World Environmental and Water Resources Congress, Great Rivers, New Mexico.2009; 42: 63-74.
[2].  Tokaldany E A, Darby SE, Tosswell P. Coupling Bank Stability and Bed Deformation Models to Predict Equilibrium Bed Topography in River Bends, Journal of Hydraulic Engineering.2007; 133(10): 1167-1170.
[3].  Ostadi F, Majdzade tabatabaee M, Alimohamadi A. Optimization Modeling of Spurdikes Dimensions by considering its Role on River Morphological Stabilization. 2014:9(4):55-72. {persian}
[4]. Bernhardt ES, Palmer MA, Allan JD, Alexander G, Barnas K, Brooks S, et al. Synthesizing U. S. river restoration efforts, Science.2005:( 308): 636–637.
[7].  Roper B, Buffington J, Archer E, Moyer Ch, Ward M. The role of observer variation in determining rosgen stream types in northeastern Oregon Mountain streams, JAWRA Journal of the American Water resources association. 2008:417-427
[8].  Hosseinzadeh M, khaleghi S, rostami M.Analysis river bank stability against erosion and management practices.Case Study: Galali River, Kurdistan.Quantitative Geomorphological Research. 2018;6(4):160-171.{persian}
[9].  Amiri takeldani E , Samadi A, Rahimi H. Effects of position and depth of tensile cracking on river bank stability. Journal of Agricultural Engineering Research. 2005;6(25):78-94. {persian}
[10].            Mansouri hafshajani M, Shafaee bajestan M. Design of Riprap Size at Bridge Abutment in a River Bend.2011;(4):10. {persian}
[11].            Layeghi S, karam , A. Hydrogeomorphological Classification of Jajrood River with Rosgen Model. Quantitative Geomorphological Research.2014;3(3):130-143. {persian}
[12].            Lawlor, S. M. 2004. Determination of Channel-Morphology Characteristics, Bankfull Discharge, and Various Design-Peak Discharges in Western Montana. Scientific Investigations Report 2004; 5263: 1-19.  
[13].            GordonN.D, McMahon T.A, Finlayson BL, Gippel CJ, Nathan R.J. An introduction for ecologists. Stream hydrology.2004;2.
[14].            Hosseinzade M, esmaeeli R. River geomorphology (Concepts, Forms and Processes). Tehran:Shahid Beheshti University publication; 2015:338. {persian}
[15].            Mount J F. California Rivers and Streams- The Conflict between Fluvial Process and Land Use, University of California Press, Berkeley, California.1995:218-241