ORIGINAL RESEARCH
Spatial Variability of Sediment Yield
in Turkish Basins
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Ege University, Civil Engineering Department, Bornova, Izmir, Turkey
Submission date: 2018-03-16
Final revision date: 2018-05-04
Acceptance date: 2018-05-07
Online publication date: 2019-01-02
Publication date: 2019-03-01
Corresponding author
Omer Levend Asikoglu
Ege University Department of Civil Engineering, Ege University Department of Civil Engineering, Bornova, 35100 IZMIR, Turkey
Pol. J. Environ. Stud. 2019;28(4):2057-2063
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ABSTRACT
It is of great importance to know the amount of sediment transported to water structures and/or
irrigation facilities during their planned lifetime. The amount of sediment transported is used in the
design of such facilities, thus minimizing sedimentation losses. Determining sediment amount is
generally based on empirical and physical modeling and on the relationship between sediment load and
stream flow, where the sediment concentration measurements are correlated with flow characteristics.
Each of these methods has some weaknesses. This study aimed to prepare a sediment yield map using
suspended sediment measurements obtained from the State Hydraulic Works in 114 observation stations
with a recording length of 15 years or more. Since the relationship between the amount of sediment
and flow rate is known, the flow rate is considered as secondary data and sediment yield is mapped by
the co-kriging method. The map showing spatial variation of the sediment yield was evaluated with
the calibration and validation stages, and satisfactory results were obtained. Thus, sediment yield can
be estimated at a project site where there is no suspended sediment measurement.