DSİ Region 02 GÖLSU Projects Planning and Design Services – Part 1

Brief Description of the Project:

Project site covers some lands of the County Seat, Kula, Demirci, Alaşehir and Gördes sub-provinces of Project site covers some lands of the County Seat, Kula, Demirci, Alasehir and Gordes Districts of Manisa Province and Dikili District of Izmir Province in the Aegean Region.

The project comprises the following facilities:

Manisa County Seat - Beydere Small Dam and Irrigation: Semi-Permeable Fill – type small dam, 25.20 m height from foundation will supply irrigation water to gross 76 ha arable land.

Manisa County Seat - Mustafa Altundal Small Dam and Irrigation: Rock-Fill type small dam, 23.80 m height from foundation will supply irrigation water to gross 74 ha arable land.

Manisa Kula Ibrahimaga Small Dam and Irrigation: Rock-Fill type small dam, 25.50 m height from foundation will supply irrigation water to gross 97 ha arable land.

Manisa Demirci Kuzukoy Small Dam and Irrigation: Semi-Permeable Fill type small dam, 36,50 m height from foundation will supply irrigation water to gross 109 ha arable land.

Manisa Demirci Canakci Small Dam and Irrigation: Rock-Fill type small dam, 30.00 m height from foundation will supply irrigation water to gross 67 ha arable land.

Manisa Demirci Mahmutlar Small Dam and Irrigation: Rock-Fill type small dam, 39.50 m height from foundation will supply irrigation water to gross 99 ha arable land.

Usak Merkez Sorkun Small Dam and Irrigation: Hardfill type small dam, 13.84 m height from foundation will supply irrigation water to gross 15 ha arable land.

Manisa Gordes Kobaklar Small Dam and Irrigation: Semi-Permeable Fill type small dam, 30.70 m height from foundation will supply irrigation water to gross 87 ha arable land.

Planning report will be prepared individually for small dams for which Preliminary Study Reports are available. Planning studies will be performed in two phases.

1. Preliminary Study Report 

Studies are performed to define the types and capacities of contractual structures and determine the technically and economically optimum project formulation and “Preliminary Report” is submitted to DSİ. The submitted project formulation is deemed necessary by DSİ and detailed planning works has started. 1/500-scale mapping on small dam axial sites and 1/1000-scale mapping in reservoir areas are performed. The “Engineering Hydrology Planning Report”, “Agricultural Economy and Land Acquisition Planning Report” and “Engineering Geology and Natural Construction Materials Planning Report” and “Land Classification and Drainage Planning Report” are prepared.

2. Planning Reports 

“Preliminary Study Reports”, including the proposed project formulations, will be reviewed by DSİ, and the Formulation to be selected by DSİ will be taken as basis to the subsequent planning studies. “Planning Land Classification and Drainage Report” and “Agricultural Economy and Land Acquisition Planning Report”, as appendices to Planning Reports, will be prepared. Investigations in natural construction material areas, laboratory tests and engineering geology studies, including foundation borehole drillings, will be carried out, and the “Engineering Geology and Natural Construction Materials Planning Report” will be prepared. The EIA studies will be performed, “Project Introductory File” will be prepared, and “EIA Is Not Required” certificates will be obtained.

All works conducted for each small dam is transferred to GIS and delivered to Administration.

Design of Small Dams 

Final design of small dams, of which Planning Reports have been agreed by the Client, will be based on the requirements specified in the “Technical Specification for Dam Construction”. The following aspects are to be considered in Small Dam Design. 

a) Preliminary Report

Preliminary Report will be prepared on the basis of the Administration’s comments on revision, if any, of the basic formulation proposed in Planning Report.

b) Interim Report

Interim Report will be prepared to comprise the preliminary calculations and project formulation.

c)  Design

Design studies will progress after considering the requirements specified in the Dam Design Technical Specification and after the interim report is agreed by the Client. Design studies will comprise all relevant hydraulic, stability, static-reinforcement, steel structure design calculations and drawings. Stability analyses, stress and displacement analyses, leakage analyses and dynamic analyses will be performed, and types and locations of instruments to be placed in small dam body will be detailed on detail drawings. All works conducted for each small dam is transferred to GIS and delivered to Administration.

Irrigation Design

Irrigation designs are made on basis on basis of transmission, irrigation, drainage networks to serve for the small dams mentioned above, and all kinds of engineering structures are made on basis of application. Irrigation network is designed as pressured (sprinkling+ dripping). Geological surveys and reports, pumping stations, force main, penstock pipeline regulation storages, regulator transmission channels, power transmission lines, exploration quantity surveys, green file, proposal unit price list, unit price tariffs are prepared for water-distribution pipeline designs, main- substitute- tertiary pipelines, evacuation and drainage channels, all engineering structures, transmission line and engineering structures, and 1/2000 scaled digital map acquisition and expropriation mapping are performed at this phase. All works conducted for each small dam is transferred to GIS and delivered to Administration.

Scope of Services:

• Planning studies,
• Final Design of Small Dams,
• Irrigation Design.