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Wash or Wadi, Saudi Arabia

Erosional Landform Pictures

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In America, a wash is a streamcourse that has water only seasonally. In southwest Asia and north Africa, it is called a wadi. In Pakistan and India it is called a nullah. Unlike arroyos, washes may be any shape from flat to rugged.
Less specific than an arroyo
Photo courtesy Abdullah bin Saeed, all rights reserved
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