Reservoir

Derince Dam

By changing the dam type, the face slopes of the dam will be more steeper and accordingly the fill material will be decreased.
 

Project Information

Client: State Hydraulic Works (DSİ)

Location: Mugla

Status: Completed

 

 

Key Features

Reservoir

Irrigation

Concrete Face Gravel Fill Dam

 

Summary

Derince Dam was designed as clay core compacted gravel fill dam previously. But at the project site there is a lot of problem to obtainin clay material. Therefore, Derince Dam should be designed without any need of clay material.

Clay core is the impervious layer of the dam. The new dam type was determined as concrete face gravel fill dam. In this type, the impervious layer would be the concrete face and thus there will be no need to use clay material in the dam design anymore.

Derince Dam has a height of 52 m from thalweg and 62.80 m from the foundation. At the top of the dam there is a parapet of 3 m height. The crest elevation of the dam is 122.00 m.

 

Koyunbaba Dam

The final design of the dam revised and the detailed design prepared according to the revised final design.
 

Project Information

Client: State Hydraulic Works (DSİ)

Location: Cankiri

Status: Completed

 

Key Features

Large Reservoir

Irrigation

Concrete Face Gravel Fill Dam

 

Summary

Koyunbaba Dam was designed as a concrete faced gravel fill dam. At the construction stage problems came up due to the subsurface water elevation.

The final design of the dam had to be revised and a detailed design had to be prepared according to the revised final design. Prosem Engineering has taken charge of this work.

Koyunbaba Dam has a height of 48.75 m from thalweg and 59.00 m from the foundation. At the top of the dam there is a parapet of 3.50 m height. The crest elevation of the dam is 841.85 m.

 

 

 

Devecikonagi Dam and Hydropower Project

In order to maximize the energy generation, the highest possible head is achieved by keeping the operating water level same as flood level with a five radial gate-controlled-spillway.
 

Project Information

Client: BM Holding

Location: Bursa

Status: Completed

 

 

Key Features

Total Installed Capacity 29 MW

RCC Dam

Run-of-River Type

Pondage Storage 

Reservoir

Irrigarion

Large Radial Gates

Semi-Indoor Powerhouse

Vertical Kaplan Turbine

Riverbed Excavation

 

 

Summary

Devecikonagi Dam and Hydropower Project is a storage regulation type hydroelectric development that is constructed over Emet Stream. The construction of the project started in September 2010 and the project is in operation since 2012. Kizkayasi Dam and HEPP are going to be constructed at the upstream of Devecikonagi Dam and HEPP project.

RCC Dam

Due to the facts that the body of the dam is RCC (Roller Compacted Concrete) and 40 m high from foundation. The spillway is designed for Q500 flood discharge which is 2,545 m3/s. In order to maximize the energy generation, the highest possible head is achieved by keeping the operating water level same as flood level with a five radial gate-controlled-spillway. Dam reservoir is 660.000 sq.m in area and 6.2 M cu.m in volume at the operating water level, 95 m. The dam has an active storage of 1.9 M cu.m to carry out the daily regulation. The crest length of the body constructed within the scope of the project is 298 m including spillway and the total RCC volume is about 60.000 cu.m.

Semi Indoor Powerhouse

The semi indoor powerhouse located on the toe of the dam contains three Kaplan type turbines; two of them have equal hydraulic capacities of 57.5 m3/s and the other one has 5 m3/s.

Energy from Irrigation Water

Low capacity turbine was designed to supply water needed for Dolluk-Gulluce Irrigation Project constructed by the State Hydraulic Works as well as to generate energy using this water.

Riverbed Excavation

At the tailrace of Devecikonagi Dam, a riverbed excavation is carried out up to 7 m depth to reduce the downstream water level, thereby reducing the amount of inundated agricultural lands which in turn reduces the negative social effects as well as expropriation cost and increases the amount of energy production.

Kayraktepe Dam and Hydropower Project

Consequently, it has been seen by extensive studies that the reformulated design is adequate for flood protection.
 

Project Information

Client: BM Holding

Location: Mersin

Status: Completed

 

Key Features

Storage Regulation

Installed Capacity 254 MW

Environmentally Conscious Design

Watershed Planning

Flood Protection Planning

Irrigation Planning

Energy Planning

Basin Hydrology

 

 

Summary

Kayraktepe Dam & HEPP Project is located at Silifke district of İçel province over Göksu River. Although Kayraktepe Dam & HEPP project remains on the agenda for over 30 years, the construction has never been realized due to several reasons. The most important difficulty is the huge reservoir behind dam body that would cause negative social and environmental impacts as well as high expropriation costs, which necessitates the modification of the project formulation. Kayraktepe Dam is a multi-purpose project of energy irrigation and flood protection. These purposes are carried out by the modified project. In the reformulation; instead of a single large dam, five run of the river type hydroelectric power projects and one middle size dam has been considered. However, reducing the reservoir volume of the project also reduces the efficiency of the dam in flood control. In order to examine the efficiency of the whole project at flood control, Prosem Engineering has performed a detailed basin planning for Goksu River.

Göksu River and Ermenek Creek confluence at the upstream of Kayraktepe Dam, therefore, the effects of Ermenek Dam and Gezende Dam located over Ermenek Creek and Mut Dam planned to be constructed over Göksu River are included in the calculations for basin planning. In the study, the basins of each dam are determined and the flood hydrographs for those as well as for sub basins are estimated. Then, flood routing studies of these dams are carried out and the inflow hydrographs of Kayraktepe Dam are generated. Following, flood routing of Kayraktepe Dam is conducted and the outflow hydrographs of the dam are produced. Using these flow data, water surface elevations in Silifke Plain and Silifke District have been calculated and probable inundated lands have been determined. Consequently, it has been seen by extensive studies that the reformulated design is adequate for flood protection. By using these studies Adana Regional Directorate of State Hydraulic Works published “Kayraktepe Barajı Revize Hidroloji Çalışmaları Raporu” in 2011.