Dhaid, or Al Dhaid (Arabic: ٱلذَّيْد, romanized: Adh-Dhayd), is the capital of the Central Region of the Emirate of Sharjah in the United Arab Emirates. An oasis town, it has extensive irrigated date palm plantations with water channelled from the nearby Hajar mountains, at least in part through ancient tunnels dug for that purpose, known as aflāj in Arabic (falaj in the singular).Dhaid has long occupied a strategic location in the mouth of the important Wadi Siji.