Assessment of the Riverbank Stability for Tigris River in Salahaddin Governorate/Iraq Using BSTEM Model
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Abstract
The riverbanks are a critical component of river ecosystems that provide various ecological, social, and economic benefits. Effective riverbank management is essential for maintaining its functions while minimizing the risks associated with instability. The fluctuation of water levels in the river negatively affects riverbank stability; therefore, the present study aims to examine the instability of the riverbank caused by the variations in water flow within the Tigris River as the basis of analysis. The flow variation effects during (2022) in Salah Al-Din Governorate, which began from the Makhoul dam site (upstream) to the end of Tikrit City (downstream), were investigated by computing a series of safety factors related to outflow events for (20) cross sections along the (82) km reach of Tigris River. The BSTEM algorithm integrated into the HEC-RAS model package was utilized. The results showed that the rate of change in flow at each cross-section impacts the calculated safety factor. Also, the results showed that all cross-sections were stable, and some were conditional stable, meaning that the riverbank is not entirely stable, however, still holding up under the existing conditions. However, caution should be exercised, and it may require monitoring and evaluation to prevent future instability issues.
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References
Roberson JA, Cassidy JJ, Chaudhry MH. Hydraulic Engineering. John Wiley & Sons; 1998.
Langendoen EJ, Simon A, Curini A, Alonso CV. Field Validation of an Improved Process-Based Model for Streambank Stability Analysis. International Water Resources Engineering Conference 1999, ASCE; 1999.
Jha S, Western A, Rutherfurd I, Grayson R. Testing Uncertainty in a Model of Stream Bank Erosion. MODSIM 2005 International Congress on Modeling and Simulation Society of Australia and New Zealand; 2005:27714-22720.
Mohammed-Ali W, Mendoza C, Holmes RR. Influence of Hydropower Outflow Characteristics on Riverbank Stability: Case of the Lower Osage River (Missouri, USA). Hydrological Sciences Journal 2020; 65(10):1784-1793. DOI: https://doi.org/10.1080/02626667.2020.1772974
Simon A, Curini A, Darby S, Langendoen E. Streambank Mechanics and the Role of Bank and Near-Bank Processes in Incised Channels. Incised River Channels 1999; 1(999):123-152.
Gray DH, Leiser AT. Biotechnical Slope Protection and Erosion Control. Van Nostrand Reinhold Company Inc.; 1982.
Thorne CR, Osman AM. Riverbank Stability Analysis. II: Applications. Journal of Hydraulic Engineering 1988; 114(2):151-172. DOI: https://doi.org/10.1061/(ASCE)0733-9429(1988)114:2(151)
Johnson MF, et al. Biomic River Restoration: A New Focus for River Management. River Research and Applications 2020; 36(1):3-12. DOI: https://doi.org/10.1002/rra.3529
Hooke JM. An Analysis of the Processes of River Bank Erosion. Journal of Hydrology 1979; 42(1-2):39-62. DOI: https://doi.org/10.1016/0022-1694(79)90005-2
Thorne C. Processes and Mechanisms of River Bank Erosion. Gravel-Bed Rivers 1982:227-271.
Wolman MG. Factors Influencing Erosion of a Cohesive River Bank. American Journal of Science 1959; 257(3):204-216. DOI: https://doi.org/10.2475/ajs.257.3.204
Mohammed-Ali R. Flood Risk Analysis: The Case of Tigris River (Tikrit/Iraq). Tikrit Journal of Engineering Sciences 2023; 30(1):112-118. DOI: https://doi.org/10.25130/tjes.30.1.11
Fripp JB, Diplas P. Surface Sampling in Gravel Streams. Journal of Hydraulic Engineering 1993; 119(4):473-490. DOI: https://doi.org/10.1061/(ASCE)0733-9429(1993)119:4(473)
Laronne JB, Reid I, Yitshak Y, Frostick LE. The Non-Layering of Gravel Streambeds under Ephemeral Flood Regimes. Journal of Hydrology 1994; 159(1-4):353-363. DOI: https://doi.org/10.1016/0022-1694(94)90266-6
Nama AH, Abbasa AS, Maatooqa JS. Hydrodynamic Model-Based Evaluation of Sediment Transport Capacity for the Makhool-Samarra Reach of Tigris River. Engineering and Technology Journal 2022; 40(11):1573-1588. DOI: https://doi.org/10.30684/etj.2022.135747.1282
Al-Kaisy SA. Hydrogeological Conditions of Ajil Sub-Basin North of Iraq. College of Science, University of Baghdad; 1992.
Reem MJ. Effect of Variation of Sedimentological and Textural Facies on the Hydraulic Properties of Unconfined Aquifer, Baiji City North of Iraq. College of Science, University of Tikrit; 2015.
Mohammed-Ali R. Review for Some Applications of Riverbanks Flood Models. IOP Conference Series: Earth and Environmental Science 2022: 1120(1): 012039. DOI: https://doi.org/10.1088/1755-1315/1120/1/012039
Brunner GW. HEC-RAS River Analysis System: Hydraulic Reference Manual, Version 6.0. US Army Corps of Engineers-Hydrologic Engineering Center; 2021.
Duan JG. Analytical Approach to Calculate Rate of Bank Erosion. Journal of Hydraulic Engineering 2005; 131(11):980-990. DOI: https://doi.org/10.1061/(ASCE)0733-9429(2005)131:11(980)
Simon A, Curini A, Darby SE, Langendoen EJ. Bank and Near-Bank Processes in an Incised Channel. Geomorphology 2000; 35(3-4):193-217. DOI: https://doi.org/10.1016/S0169-555X(00)00036-2
Nama AH, Abbas AS, Maatooq JS. Investigation of the Morphologic Aspects for the Tigris River Reach between Makhool Dam and Samarra Barrage. Civil Engineering Department, University of Technology; 2023.
Kalaf HA. Hydrological Study of a Section of the Tigris River between Shirqat District and the Lower Zab Estuary Using HEC-RAS Program. Midad AL-Adab Refereed Quarterly Journal 2023; 3(30):259-290.
Chow VT. Hydraulics, Open-Channel, International Student Edition. McGraw-Hill; 1954.
Nash JE, Sutcliffe JV. River Flow Forecasting through Conceptual Models Part I-A Discussion of Principles. Journal of Hydrology 1970; 10(3):282-290. DOI: https://doi.org/10.1016/0022-1694(70)90255-6
Avila KC. Evaluating Toe Erosion and Streambank Stability with BSTEM Model for Yonaba Creek. Research World International Conference; 2016. ISBN: 978-981-925751-925753-925751.
Mohammed-Ali W, Mendoza C, Holmes RR. Riverbank Stability Assessment During Hydro-Peak Flow Events: The Lower Osage River Case (Missouri, USA). International Journal of River Basin Management 2021; 19(3):335-343. DOI: https://doi.org/10.1080/15715124.2020.1738446