Design of Yntymak Reservoir Rehabilitation and Technical Reequipment

flooded valve chamber

formwork for receiving chamber

Country: Kazakhstan

Project period: 10/2005 - 12/2006

Client: Committee for Water Resources, The World Bank

Investment amount: USD 18.0 million


The aim of the project is the completion of the partly constructed Yntymak (Intumak) reservoir at the Nura river in Central Kazakhstan. Construction of the dam was started in the 1980s but spillway and ancillary village protection dams were never completed. The reservoir acted as pollution trap as mercury contaminated sediments settled in the reservoir. A dam safety study revealed unsatisfactory condition of the main dam.

The dam must be rehabilitated, the missing reservoir structures as the spillway and the village protection dams must be constructed in order to gain from an operational water reservoir for the future water supply to Astana and for the Korgalzhyn nature reserve.

Services provided:
  • Basic design
  • Detailed design
  • Environmental Impact Assessment
  • Preparation of tender documents
  • Tender assistance of the main dam rehabilitation, the ancillary village protection dams, the bottom outlet, hydro power unit and the spillway structure

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