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Morphology of Tigris River Within Baghdad City : Volume 9, Issue 5 (02/05/2012)

By Ali, A. A.

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Book Id: WPLBN0004013332
Format Type: PDF Article :
File Size: Pages 25
Reproduction Date: 2015

Title: Morphology of Tigris River Within Baghdad City : Volume 9, Issue 5 (02/05/2012)  
Author: Ali, A. A.
Volume: Vol. 9, Issue 5
Language: English
Subject: Science, Hydrology, Earth
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2012
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Knutsson, S., Ali, A. A., & Al-Ansari, N. A. (2012). Morphology of Tigris River Within Baghdad City : Volume 9, Issue 5 (02/05/2012). Retrieved from http://www.worldlibrary.org/


Description
Description: Department of Civil, Environmental and Natural Resources Engineering, Lulea University of Technology, Lulea, Sweden. Changes in the morphology of the River Tigris within Baghdad City are very noticeable in recent years. The number of islands is increasing with time despite the fact that huge amount of sediments are trapped in reservoirs upstream Baghdad City. The debris of destroyed bridges in the wars of 1991 and 2003 had enhanced the development of these islands. As a consequence the ability of the river had been reduced to pass flood waves. This fact caused partial flooding of parts of Baghdad City.

Cross sections of the River Tigris were surveyed in three occasions (1976, 1991 and 2008). The last survey conducted in 2008 by Ministry of Water Resources covered 49 km of the river from Al-Muthana Bridge to its confluence with Diyala River at 250 m intervals. The data was used to predict the maximum flood capacity for the river using one-dimensional hydraulic model for steady flow HEC-RAS. Calibration was carried out for the model using field measurements for water levels along the last 15 km from its reach and the last 10 yr observations at Sarai Baghdad station.

The average discharge of the river in Baghdad had been calculated for the past ten years. This value was introduced in the model. Then different scenarios were applied by increasing the discharge in order to find out the critical discharge that can cause inundation. The procedure continued to detect the areas that had been inundated and the water level was recorded.

The model showed a significant reduction in the current river capacity in comparison with what the river had used to hold during floods of 1971 and 1988. The three surveys conducted on the same reach of the River Tigris indicated that the capacity of the river to pass water had been decreased. In addition the changes in the morphology of the river cross sections were very clear.


Summary
Morphology of Tigris River within Baghdad City

Excerpt
Al-Ansari, N. A. and Knutsson, S.: Toward prudent management of water resources in Iraq, J. Adv. Sci. Eng. Res., 1, 53–67, 2011.; Al-Ansari, N. A., Ali, S. H., and Taqa, A. S.: Sediment discharge of the River Tigris at Baghdad (Iraq), Proceedings of the Canberra Symposium, IAHS-AISH Publ., 128, 399–407, 1979.; Al-Ansari, N. A., Sayfy, A., Al-Sinawi, G. T., and Ovanessian, A. A.: Evaluation of the water quality for the lower reaches of River Tigris using multivariate analysis, J. Water Res., 5, 173–187, 1986.; Al-Shahrabaly, Q. M.: River Discharges for Tigris and Euphrates Gauging Stations, Ministry of Water Resources, Baghdad, 2008.; Geohydraulique: Tigris River Training Project within Baghdad City, report submitted to the Ministry of Irrigation-Iraq, Paris, 1977.; Al-Ansari, N. A., Salman, H. H., and Al-Sinawi, G. T.: Periodicity of selected water quality parameters for the Tigris water at Baghdad, J. Water Res., .6, 11–17, 1987.; Herza Engineering Company: Hydrological Survey of Iraq, report submitted to the Ministry of Agriculture-Iraq, Illinois, 1963.; Korpak, J.: The influence of river training on mountain channel changes (Polish Carpathian Mountains), Geomorphology, 92, 166–181, 2007.; Lammersen, R., Engel, H., van de Langemheen, W., and Buiteveld, H.: Impact of river training and retention measures on flood peaks along the Rhine, J. Hydrol., 267, 115–124, 2002; Marchi, E., Roth, G., and Siccardi, F.: The Po: centuries of river training, Phys. Chem. Earth, 20, 475–478, 1996.; Morris, G. L. and Fan, J.: Reservoir Sedimentation Handbook, McGraw Hill Book Co., New York, 2010.; Nedeco: Study of the navigation in Tigris River between Baghdad and Mosul, report submitted to the Ministry of Development, Amsterdam, 1958.; University of Technology: Training of Tigris River inside Baghdad City, report submitted to the Ministry of Agriculture and Irrigation-Iraq, Baghdad, 1992.

 

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