Tigris river terrace mapping in northern Iraq and the geotechnical properties of the youngest stage near Dao Al-Qamar Village

1991 ◽  
Vol 7 (1) ◽  
pp. 603-609
Author(s):  
T. H. Al-Dabbagh ◽  
S. Q. Al-Naqib
Keyword(s):  
River System ◽  
Geotechnical Properties ◽  
Hydraulic Structures ◽  
River Terrace ◽  
Geotechnical Data ◽  
Northern Iraq ◽  
Tigris River

AbstractDuring the course of an investigation to evaluate the area for mapping distribution of deposits , different proposed hydraulic structures and construct ion materials.Terraces within the Valley of the River Tigris were mapped at three locations in northern Iraq. Four stages, ranging in age from pleistocene to Recent have been recognized.The paper reveiws previous work concern ing these terrace deposits and describes the mapping work. The geomorphology of terraces is discussed with reference. to the evaluation of the river System. Finally some preliminary geotechnical data concerning the sediments are presented and discussed .

scholarly journals Effect of Tail Regulators on Euphrates River Flood Capacity at Al Nassiriyah City

2019 ◽  
Vol 26 (1) ◽  
pp. 43-54
Author(s):  
Atheer Ghazi Shayea ◽  
Hayder A. Al Thamiry
Keyword(s):  
Discharge Capacity ◽  
Return Period ◽  
River System ◽  
Hydraulic Structures ◽  
Euphrates River ◽  
Flood Discharge ◽  
Maximum Discharge ◽  
River Flood ◽  
River Training ◽  
The Impact

Euphrates River extends about 125 km within the study area located in Annassiriyah City, Dhi Qar Governorate, Iraq. The impact of the seven hydraulic structures on the discharge capacity of the Euphrates River needs to be considered. The main objectives of this research are to increase the discharge capacity of Euphrates River within Annassiriyah City during flood seasons and study the impact of these hydraulic structures on the river capacity by using HEC-RAS 5.0.3 software. Five scenarios were simulated to study the different current condition of Euphrates River within Annassiriyah City. Other additional four scenarios were implemented through river training to increase the river capacity to 1300 m³/s; it is the flood of 100 year return period. The results of the current condition showed that the maximum discharge capacity of Euphrates River within Annassiriyah City is just 300 m³/s. The results of applied improvements show that the capacity can reach 1300 m³/s when Al Chibayish Weir was hypothetically removed from the river system. Additionally, the river capacity will be reduced to 600 m³/s when Al Chibayish Weir is considered. It was concluded that the 100-year flood discharge cannot be achieved without removing Al Chibayish Weir from the river system.

A review of vertebral and fin-ray counts in the genus Alburnoides (Teleostei: Cyprinidae) with a description of six new species

2009 ◽  
Vol 18 (1) ◽  
pp. 126-173 ◽  
Author(s):  
N.G. Bogutskaya ◽  
B.W. Coad
Keyword(s):  
New Species ◽  
Statistical Tests ◽  
River System ◽  
Distinct Species ◽  
Morphological Characters ◽  
Type Locality ◽  
Lake Basin ◽  
River Drainage ◽  
Tigris River ◽  
Fin Ray

Variations in the different vertebral patterns and unpaired fin counts in the genus Alburnoides are discussed based on an examination of over 1100 specimens from a wide area of distribution of the genus. Though it was commonly considered that the morphological differences between subspecies and local forms of A. bipunctatus auctorum appear slight, our study shows that there are pronounced differences between many of them in vertebral and dorsal and anal fin counts. To estimate reliability of differences, statistical tests were used and a cluster analysis (UPGMA - Average Linkage clustering method) was performed based on calculated values, and tree diagrams are presented and analyzed in their taxonomic context. The differences in fin ray and vertebral counts in combination with some other morphological characters, distinguished some of the former subspecies or local forms as distinct species. Along with five nominal taxa re-established to a species level (A. rossicus, A. kubanicus, A. maculatus, A. eichwaldii, A. fasciatus), we describe six new species: A. gmelini (type locality Sunzha River, Terek River drainage, Eastern Ciscaucasia, Russia), A. varentsovi (type locality Ashkhabadka River, northern slope of the Kopetdag, Turkmenistan), A. petrubanarescui (type locality Qasemlou Chay, Orumiyeh Lake basin, Iran), A. namaki (type locality qanat at Taveh, Namak Lake basin, Iran), A. nicolausi (type locality Simareh River in Karkheh River system, Tigris River drainage, Iran), and A. idignensis (type locality Bid Sorkh River, Gav Masiab River system, Tigris River drainage, Iran).

An Institutional Framework for Facilitating Cooperation in the Euphrates-Tigris River Basin

2000 ◽  
Vol 5 (2) ◽  
pp. 311-330 ◽  
Author(s):  
◽  
Keyword(s):  
River System ◽  
Negotiation Process ◽  
Institution Building ◽  
Clear Understanding ◽  
Complex Interdependence ◽  
Tigris River ◽  
Major Development ◽  
Definition Of ◽  
Project Coordination ◽  
Water Issues

AbstractSince the initiation of major development projects, riparians of the Euphrates-Tigris river system, namely Turkey, Syria and Iraq, have begun utilizing those water resources under conditions of complex interdependence. A number of crises have occurred in the basin due to the lack of regularized consultation mechanisms among the riparians. Nevertheless, there have been notable efforts to build up a negotiation framework for data sharing and project coordination. The article describes the negotiation mechanisms and processes between Turkey, Syria and Iraq, as well as the bottlenecks and opportunities that exist over utilizing the waters of the Euphrates and Tigris rivers. Negotiations over the water issues involved, both at the technical level and higher levels, have been suspended since the mid-1990s. The article asserts that there is a need to revitalize these negotiations. A clear understanding of the respective rights and obligations of the three riparians as well as an objective definition of such needs are prerequisites for sustaining the negotiation process. The article concludes by elaborating on the modalities of institution building that would facilitate negotiations over the use of the waters of the Euphrates-Tigris river system.

scholarly journals Identification of Manning’s Coefficient Using HEC-RAS Model: Upstream Al-Amarah Barrage

2020 ◽  
Vol 2020 ◽  
pp. 1-7 ◽  
Author(s):  
Sarmad A. Abbas ◽  
Ali H. Al-Aboodi ◽  
Husham T. Ibrahim
Keyword(s):  
Simulation Models ◽  
River System ◽  
Water Levels ◽  
Roughness Coefficient ◽  
Hydraulic Simulation ◽  
Tigris River ◽  
A Value ◽  
Manning’S Coefficient ◽  
South Of Iraq ◽  
Acceptable Agreement

In understanding the hydraulic characteristics of river system flow, the hydraulic simulation models are essential tools. This study submits the results of the proposition of a hydraulic model in order to determine the roughness coefficient (Manning’s coefficient n) of the Tigris River along 3.5 km within the Maysan Governorate, south of Iraq. HEC-RAS software was the simulation tool used in this study. The HEC-RAS model was adopted, calibrated, and validated in adopting two sets of observed water levels. Graphical and statistical approaches were used for model calibration and verification. Results from this investigation showed that a value of Manning’s coefficient of 0.025 gave an acceptable agreement between observed and simulated values of water levels.

scholarly journals Facies Analysis and Paleoenvironmental Assessment of the Upper Campanian Hartha Formation in Y and J Fields Northwestern Zagros Basin, Iraq

2021 ◽  
Vol 54 (2F) ◽  
pp. 36-47
Author(s):  
Amel Nooralddin ◽  
Medhat Nasser ◽  
Aboosh Al-hadidy
Keyword(s):  
Depositional Environment ◽  
Zagros Basin ◽  
Reservoir Properties ◽  
Study Objective ◽  
Thin Sections ◽  
Northern Iraq ◽  
Reservoir Rocks ◽  
Tigris River ◽  
Production Wells ◽  
Upper Campanian

The Upper Campanian Hartha Formation represents potential Cretaceous hydrocarbon-bearing reservoir rocks across the Y and J oilfields northwestern Zagros Basin, northern Iraq. The study objective is depositional environment which affects reservoir properties by tool, lithofacies, core, thin section, and logs, using petrel (V.2016) and strat software, facies distribution, grains, and diagenetic processes control and enhance reservoir properties which can plan platform production and minimize risks in choosing production wells location at two fields scale The current study is concerned with lithofacies and microfacies of the Hartha Formation within two fields in northern Iraq. Several subsurface well-log data, core, and cutting samples have been used in order to prepare thin sections that were subjected to sedimentological (lithofacies, and grain-size) examination. The petrography investigation revealed five rock-units including Hr. 1, 2, 3, 4, and 5, the thickness of 89 m in the Y-A field and increasing to up to 140 m in the J-B field might be due to erosion or tectonic uplift of the topography in Y subbasin. Which is locally sub-basin within study fields western banks of Tigris river as gentle slope ramp depositional condition with Spectrum microfacies from lime-mudstone to packstone texture with rudest and benthic debris enhances by diagenesis, dolomitization, dissolution moldic porosity, fracture; dolostone is more effective in the upper section of the formation in A than B Wells. Many factors, such as cementation, compaction, and pore-filling autogenic minerals, decrease reservoir quality, and their effects are similar in wells A and B.

scholarly journals The Suitability of Tigris River Sediments from Tikrit, Northern Iraq, for Concrete Production and Road Construction Purposes

2021 ◽  
pp. 1177-1187
Author(s):  
Mohanad Essa Khudhur
Keyword(s):  
River Sediments ◽  
Organic Matter Content ◽  
Channel Modeling ◽  
Grain Size Analysis ◽  
Dry Density ◽  
Ratio Test ◽  
Northern Iraq ◽  
Tigris River ◽  
Los Angeles Abrasion ◽  
Concrete Production

This study aims to assess the suitability of the sediments present in Tigris River, Tikrit city, northern Iraq for concrete production and road building purposes. Representative samples were collected from three selected stations at the study area using the channel modeling method. According to the grain size analysis, the sediments were classified as a type of poorly graded gravels (GP) depending on the unified soil classification system. The true specific gravity of the soil ranged between 2.28 and 2.568. The chemical analysis of the study samples revealed that gypsum content ranged between 0.82 and 1.69 %. Total soluble salts ranged 2.45- 3.87%, the organic matter content ranged 0.14- 0.76%, and the pH value was between 7.73 and 7.38%. The results of the Los Angeles Abrasion Test of selected samples showed weight loss ratios for the three stations (1, 2, and 3) of 19.9, 20.7, and 17.2%, respectively, while the maximum dry density values were 2.2739, 2.1940, and 2.2013 gm / cm3, respectively. The values ​​of the Californian Bearing Ratio test (C.B.R) were 53, 65 and 106 %, respectively. After comparing the results with the standard values of ASTM for concrete and roads materials, it was found that the samples were suitable for these purposes.

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