Water Supply and Wastewater
Project No 8604
Project Title Istanbul Darlik Dam and Facilities
Client Istanbul Metropolitan Municipality
Start - Finish 1986 - 1990
Alone or Joint-Venture Alone
Detailed Description
Rock Fill Embankment Dam With 113.000.000 cum Reservoir Capacity

Dam Body
Cret : Elevation 57.50 m , Width 10 m, Length 308 m
Thalweg Elevation : 10 m
Body Heigth From Thalweg : 47.50 m
Body Heigth From Base : 73.50 m
Maximum Width at Base : 180 m
Maximum Water Level : 55.42 m

Spillway
Type : Free Opposite Receiving
Access Channel Bottom Elevation : 51 m
Project Flow : 382 cum/sec
Unloading Channel : Rectangle Type, Width 30 m
Energy Breaking Pool : Type 2 Gear (USBR), Length 21.96 m
Outlet Channel : Trapesoidal Type, Width 40 m

Derivation Tunnel
Cylindirical Concrete Encased Type, Interior Dia.3 m, Length 256 m

Bottom Spillway
Maximum Capacity : 22.95 cum/sec
Pipe : Interior Dia. 1.30 m, Length 79 m

Pump Station and Water Intake Structure:
Water Intake Capacity : 346.000 cum/day
Type : Tower in Water
Pump Station Top Elevation : 58 m
Pump-Motor Groups : 6 each, 2,000 kW, 1,450 rpm
Water Pres. Heigth and Flow : 150 m, 4 cum/sec
Access Bridge : Length 28 m, Width 6 m
Pump Station Control Building : Two Flats, 610 sqm

Air Furnaces : 2 each, Interior Dia. 2 m, Heigth 6 m
Balance Shaft : 1 each, Cylindirical Reinforced Concrete, Interior Dia. 8 m, Heigth 21 m

Main Water Transfer Line
Spiral Welded Steel Pipe, Grade St 37.2, Interior Dia. 1,800 mm, Wall Thickness 14.25 mm, Length 4,788 m

Water Transfer Tunnel
Cylindirical Reinforced Concrete Tunnel, Interior Dia. 4 m, Length 1,574 m, Capacity 17.11 cum/sec

Power Supply
2 each 34.5/6.3 kV ,12.5 MVA Transformer and MV and LV Switchgear Systems
Services Provided By ESER
Tender Evaluation
Construction Supervision
Construction Management
Commissioning
Start-up Inspections
Geotechnical Studies
Project Management
Contract Management
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