Ürkmez Dam (Turkish: Ürkmez Barajı )is a dam in Izmir Province, Turkey, built between 1985 and 1990. The development was backed by the Turkish State Hydraulic Works.

Ürkmez Dam is located in Seferihisar district of İzmir Province, western Turkey. Its constraction began on 12 September 1985i and completed on 12 February 1990ç

It was reported by İzSu, the Water and Sewage Authority of İzmir Metropolitan Municipality, that mid January 2024, the water occupancy rate of the dam reservoir amounted to 28.58% compared to the same time in the previous year with 39.12%.

The drinking water treatment plant was projected in 1992, and went in operation on 2 July 2004. It is operated by IzSu, the water and Sewage Authority of İzmir Metropolitan Municipality.

As long as the height of the reservoir water is more trhan 26 m (85 ft), water runs to the water purification plant without the need for pumping. When the water height drops under the 26 m (85 ft)-level, four pumps of 11 kW (15 hp) each are activated to transfer water in a pipeline of 400 mm (16 in) diameter to the water treatment plant, which is about 900 m (3,000 ft) away. The plant can supply 109 L/s (3.8 cu ft/s).

• List of dams and reservoirs in Turkey