Karst engineering studies at the Akköprü Reservoir area, southwest of Turkey

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Publication Date

7-28-2006

Publication Title

Environmental Geology

Volume Number

51

Abstract

Akköprü Dam, which is under construction, is located at Dalaman Basin in the southwest of Turkey. The base rock at the Akköprü dam site and reservoir area is autochthon Aktaş limestone and Gökseki flysch formation. Allochthon Cehennem Deresi limestone, a complex series of ferro- (melange) and peridotite–serpentine units, overlay this unit with tectonic contact. These units are covered by young sedimentary series. The outcrops of karstified Aktaş limestone are observed at 2 km upstream of the dam site, at the right reservoir abutment. This unit is very permeable and the groundwater level is very deep, 100–116 m below the Dalaman riverbed. After impoundment, 250,000 m2 of this unit will be submerged. Groundwater which percolates in this unit discharges at the coastal springs. This study analyzed the watertightness of Akköprü reservoir related to the karstified limestone in the left reservoir bank and discussed possible options of remedial works to reduce seepage.

Keywords

Hydrogeology, Structural geology, Karst

Document Type

Article

Digital Object Identifier (DOI)

https://doi.org/10.1007/s00254-006-0395-x

Language

English

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