Wadi Howar

Wadi Howar (Wadi Howa) is a wadi in Sudan and Chad. It travels approximately 400 kilometres in a northeasterly direction from the Ouaddaï highlands in Chad across the North Darfur state of Sudan, before losing itself in the Libyan Desert. Towards its western end it forms a part of the international boundary between Sudan and Chad, separating the West Darfur state of Sudan and the Borkou-Ennedi-Tibesti Region of Chad.

The wadi is the remnant of the ancient Yellow Nile, a tributary of the Nile,during the Neolithic Subpluvial,it was one of the largest rivers,lasting until 1500 BC,when the Sahara Desert returned to it present point It met the Nile near the southern point of the Great Bend. the present extremely arid western part of Upper Nubia (northern Sudan)was temporarily linked to the Nile by way of a hitherto unknown 400 kilometer long tributary. From about 9500 to 4500 years ago, lower Wadi Howar flowed through an environment characterized by numerous ground water outlets and freshwater lakes. Savanna fauna and cattle-herders occupied this region, which today receives at most 25 millimeters of rainfall per year. At that period the southern edge of the eastern Sahara was 500 kilometers further north than today and ground water resources were recharged for the last time.

Wadi

Wadi (Arabic: وادي‎"wādī) "Vadi" (Hebrew: ואדי‎ "vādī)" is the Arabic and Hebrew term traditionally referring to a valley. In some instances, it may refer to a dry (ephemeral) riverbed that contains water only during times of heavy rain or simply an intermittent stream.

Etymology

The term wādī is very widely found in Arabic toponyms.

Some Spanish toponyms are derived from Andalusian Arabic where wādī was used to mean a permanent river, for example: Guadalcanal from wādī al-Qanal = "river of refreshment stalls", Guadalajara from wādī al-hidjārah = "river of stones", or Guadalquivir from al-wādī al-kabīr = "the great river". Seasonal streams, frequent in south-east Spain, are called ramblas instead.

In the Maghreb, the term wadi (wad in Maghrebi Arabic, sometimes transcribed Oued) is applied to all rivers including regular ones.

General morphology and processes

Wadis are located on the gently sloping, nearly flat parts of deserts; commonly they begin on the distal portions of fans and extend to inland sabkhas or playas. In basin and range topography, wadis trend along basin axes at the terminus of fans. Permanent channels do not exist, due to lack of continual water flow. Wadi show braided stream patterns because of the deficiency of water and the abundance of sediments. Water percolates down into the stream bed causing abrupt loss in energy and resulting vast deposition. Wadis may develop dams of sediment which results in change of stream patterns in the next flash flood. :)

Wadi, Karnataka

Wadi (ವಾಡಿ) is a census town in Gulbarga district in the Indian state of Karnataka. The Wadi Junction railway station is an important railway junction on the Indian railways. Trains from the metro cities of Mumbai, Bangalore,Hyderabad and Chennai pass through this town. Wadi is home to two cement plants of Associated Cement Company Limited ( ACC ) . The ACC has two cement plants of capacity 2.11 and 2.6 million tonnes per annum (mtpa).The cement plants are some of the largest in the country. Wadi is also famous for its Limestone mines. The main source of income is ACC, Railway's and Working in Lime Stone Mines. The growth of cement plants(ACC) and railways in the region has attracted people from diverse regions and cultures. Gulbarga, which is around 37 km from Wadi is a major educational centre which houses many engineering, medical, management and dental colleges.

Geography

Wadi is located at 17°04′N 76°59′E / 17.07°N 76.98°E / 17.07; 76.98. It has an average elevation of 411 metres (1348 feet).

Wadi, Maharashtra

Wadi is a census town in Nagpur district in the Indian state of Maharashtra.

Demographics

As of 2001 India census, Wadi had a population of 40,147. Males constitute 53% of the population and females 47%. Wadi has an average literacy rate of 78%, higher than the national average of 59.5%: male literacy is 82%, and female literacy is 74%. In Wadi, 14% of the population is under 6 years of age.

Other Features

Wadi is generally a place where all the godowns and all the warehouses are found. Especially at main area can see marketplace, godowns for verious medicines, cosmetics and transportation. It has international highway no.6 (asian highway 46) known as amravati road.

References