An area of floating vegetation in a stretch of the White Nile, thick enough to impede navigation.
- ‘Thick aquatic vegetation (sudd) disperses the river water into numerous channels.’
- ‘Strange as it may seem, the sudd interferes but little with the flow of the river, and the Nile passes under it with little resistance.’
- ‘Ultimately the force of water, assisted by the pressure of wind, is so great that the sudd dam will burst.’
- ‘Ecologically the Sudd wetland is composed of various ecosystems, grading from open water and submerged vegetation, to floating fringe vegetation, seasonally inundated woodland, rain-fed and river-fed grasslands, and flood-plain scrubland.’
Arabic, literally obstruction.