Wadi Dayqah Dam
Dam (100 MCM storage), About 100 million m3 of storage; a 65,000 m3/day treatment plant is being added, which the procurer counts as a 35,000 m3/day supply source from 2028 in Oman.
Operational
The record
- Country
- Oman
- Location
- Qurayyat
- Coordinates
- 23.085, 58.848
- Technology
- Dam (100 MCM storage)
- Capacity
- About 100 million m3 of storage; a 65,000 m3/day treatment plant is being added, which the procurer counts as a 35,000 m3/day supply source from 2028
- Capital cost
- —
- Stage
- Operational
- Owner or client
- Government of the Sultanate of Oman; the treatment plant is being procured by Nama Water Services
- Contractor
- VINCI Construction Grands Projets
- Operator
- —
- Finance
- State funded; the treatment plant is a public private partnership on a build own operate basis for 20 years
- Award or start year
- 2006
- Commissioned
- 2010-03
Record last checked 2026-09-18.
History
- 2006-08
Construction starts on the main and ancillary dams
- 2010-03
Dams completed at about 100 million m3 of storage
- 2026-01
Wadi Dayqah water purification plant reaches 20 per cent of its design and planning phase
- 2027-03
Purification plant scheduled for completion
- 2028
Procurer counts 35,000 m3/day from Wadi Dayqah towards Muscat Zone supply
Sources
5 references
Every field in the record above is taken from the references below. A field that none of them confirms prints as a dash.
- VINCI Construction Grands Projets, Wadi Dayqah dams. vinci-construction-projets.com.
- Client the Government of the Sultanate of Oman, about 80 km from Muscat, main roller compacted concrete dam 75 m high and 435 m long of 572,000 m3, ancillary earth-fill dam 48 m high and 360 m long of 960,000 m3, storage about 100 million m3, built to supply drinking water to Muscat and Quriyat, construction August 2006 to March 2010, project management by Black & Veatch, Nespak and Suyapi.
- TradeArabia, Nama's Wadi Dayqah purification plant set for 2027 completion. tradearabia.com.
- Owner Nama Water Services, 65,000 m3 a day, public private partnership on a build own and operate basis for 20 years, phase I design and planning 20 per cent complete in January 2026, completion expected March 2027. Nama PWP, Water 7-Year Statement 2026-2032 (Issue 20). omanpwp.om.
- MENA Water Review major projects register and PPP pipeline — compiled from procurer publications, development-bank project pages and trade reporting; each record names its source.
Wadi Dhayiqah counted as a Nama Water Services source with a prospective capacity of 35,000 m3/day and an expected commercial operation date in 2028. Sources differ on the plant's output, 65,000 m3/day in the developer's account against the 35,000 m3/day the procurer counts towards Muscat Zone supply; both are quoted because they measure different things. Location from OpenStreetMap, the way named Wadi Dayqah Dam.