Evaluation of eutrophication control strategies for the Keban Dam reservoir

Soyupak, S
Mukhallalati, L
Yemisen, D
Bayar, A
Yurteri, C
The reservoir of the Keban Dam in eastern Anatolia is a very deep and large water body subject to significant seasonal water level fluctuations within a given hydrological year. At the present time, different sections of the reservoir have different trophic status and the upper portion of the reservoir, in particular, is eutrophic. In this regard, there is a need for the assessment of alternative strategies to be implemented for phosphorus and thus eutrophication control in this segment of the reservoir. In this study, mathematical modeling techniques are used to compare various alternatives in terms of their relative effectiveness for phosphorus control. With this intention, a two dimensional depth-averaged hydrodynamic model and a three-dimensional compartmental water quality model are coupled to represent the complex water body dynamics prevailing in the reservoir, After calibration and verification, the coupled model was used to simulate dissolved oxygen and euphotic chlorophyll-a concentrations under different scenario conditions corresponding to various strategies proposed for phosphorus control. The modelling effort has yielded valuable information that can be used by decision makers for the evaluation of different management alternatives including reduction of the phosphorus load coming from point as well as diffuse sources within the catchment area, use of baffles and construction of pre-dam structures. (C) 1997 Elsevier Science B.V.


The spatial and temporal variability of limnological properties of a very large and deep reservoir
Soyupak, S; Yemisen, D; Mukhallalati, L; Erdem, S; Akbay, N; Yerli, S (1998-01-01)
The reservoir of Keban Dam is a very deep and large water body of temperate zone exhibiting special characteristics with respect to its limnological properties. One of the major characteristics is the development and seasonal persistence of metalimnetic oxygen minima. This characteristic has been observed for three consecutive years. Spatial heterogeneity with respect to several parameters was another distinct property that has been clearly identified. The long term study has identified the existence of an ...
SOYUPAK, S; Gökçay, Celal Ferdi; YERLI, S; ERDEN, S; AKBAY, N; CILESIZ, AF (1994-03-01)
Water quality properties and trophic status of Keban Dam Reservoir have been assessed in detail. The dissolved oxygen contours exhibited somewhat unusual behaviour of temporarily established intermediate layers of low dissolved oxygen concentrations. The phytoplankton species were identified and their composition was evaluated. The reservoir is eutrophic in general terms. However, lotic and limnetic zones of the reservoir have shown different trophic status.
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Onur, AK; Ekemen, E; Soyupak, S; Yurteri, C (1999-01-01)
The Seyhan river has a total catchment area of 20,731 km(2) with major pollution sources located downstream of the Seyhan Dam in Adana. The so-called Lower Seyhan, is under the threat of nor only domestic and industrial wastewater discharges originating from the metropolitan area of Adana, but also agricultural wastes of the fertile Cukurova Plain. In this study, the present and future water qualify characteristics of the Lower Seyhan have been investigated by means of a mathematical modelling study based o...
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Turan, Kamil Hakan; Yanmaz, Ali Melih; Department of Civil Engineering (2004)
A diversion weir is a headwork facility built across a river to raise the water level and to divert water for various purposes, such as irrigation, hydropower generation, etc. Diversion weirs with sidewise intakes are widely used in plain rivers. They are composed of many structural components which are designed for different purposes. In this thesis, a Windows-based, visual, user friendly program named WINDWEIR was developed in Visual Basic.NET programming language for the optimum design of a diversion wei...
Design of settling basins and related problems encountered in practice
Zaloğlu, Fatma Deniz; Göğüş, Mustafa; Department of Civil Engineering (2013)
Settling basins are the hydraulic structures used to get sediment-free water from rivers mostly for hydropower systems. Mainly fine sediment is trapped along the settling basins and from time to time the accumulated sediment in the settling basin is flushed away. A wrong design of a settling basin creates lots of problems. In this study based on the hydraulic analysis of a settling basin, the available settling basin design procedures in the literature were reviewed. Some of the settling basins constructed ...
Citation Formats
S. Soyupak, L. Mukhallalati, D. Yemisen, A. Bayar, and C. Yurteri, “Evaluation of eutrophication control strategies for the Keban Dam reservoir,” ECOLOGICAL MODELLING, pp. 99–110, 1997, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/68010.