Wadi Hadf

The total length of the Wadi Hadf is ', of which run in Omani territory and in Emirati territory. Its river source is located at an approximate altitude of , on the northwest slope and a very short distance from the summit of Jabal Hatta', also known as Um Alnosoor (). on both sides of the border between Oman and the United Arab Emirates, until reaching the extensive and rich cultivated area located east of the town of Hadf. This village, geographically located in the territory of Oman, is administered under an international condominium regime between Oman and the emirate of Ajman. At that point the Wadi Hadf turns northeast towards the Sinadil Pass through a narrow, steep-sided gorge cut mainly through cemented gravel deposits. However, just above the head of the gorge, the wadi forms a effluent or distributary channel branching off from the main channel and running northwards. where it is grouped with other important wadis that drain the western flank of the Hajar Mountains, forming the Wadi Fayah, which once flowed into the Persian Gulf, in the area of the border between Sharjah and Ajman. Still in the Masfut enclave, and before continuing its course towards the confluence with the Wadi Hatta, the Wadi Hadf receives on its right the mouth of its tributaries Wadi Gulfa / Ghalfa, Wadi Al Mustab, Wadi Al Khulaiban and Wadi Lishan. In the territory of the Hatta enclave (Dubai), one and a half kilometers before the Al Khattem Dam, where it joins the Wadi Hatta, the Wadi Hadf receives the waters of its last two tributaries: on the right, the Wadi Hattawi, and on the left, the Wadi Laim. == Dams and reservoirs ==

Like other regions in the UAE, the Wadi Hadf geographical area has occasionally been affected by unusually heavy rainfall and flooding. To prevent the risk of flash floods and increase the potential for groundwater recharge, a 11-metre-high dam with a reservoir area of 1.02 km² and a capacity of 3 million cubic metres, officially named Hadf Dam (coordinates: 24°49′38″N, 56°4′34″E), was built in 1991 on the Wadi Hadf river in the emirate of Ajman, although some media refer to it as Al Owais Dam. Also in the emirate of Ajman, two other smaller dams were built in 2002, in the wadis Al Mustab and Khulaiban, both tributaries of the Wadi Hadf: Al Mustab Dam, 10.5 metres high, with a reservoir of 0.0035 km² and a capacity of 0.0175 million cubic meters (coordinates: 24°48′50″N, 56°5′16″E); and the 7-metre-high Al Khulaiban Dam, with a reservoir of 0.0036 km² and a capacity of 0.0184 million cubic metres (coordinates: 24°48′37″N, 56°5′34″E). == Toponymy ==

Alternative names: Wadi Hadaf, Wadi Hadf, Wādī Ḥadaf, Wādī Ḩadaf, Wādī Ḩadf. The name of Wadi Hadf (spelled Wādī Ḩadf), its tributaries, mountains and nearby towns was recorded in the documentation and maps produced between 1950 and 1960 by the British Arabist, cartographer, military officer and diplomat Julian F. Walker, during the work carried out to establish the borders between the then called Trucial States, and later completed by the Ministry of Defence of the United Kingdom, on scale maps 1:100,000 published in 1971. == Population ==

The Wadi Hadf area was mainly populated by the Biduwat tribe. == See also ==