alluvial plain

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Noun1.alluvial plain - a flat resulting from repeated deposits of alluvial material by running water
flat - a level tract of land; "the salt flats of Utah"
References in classic literature ?
At the end of the levee we left the mules and went in a sailboat across an arm of the Nile or an overflow, and landed where the sands of the Great Sahara left their embankment, as straight as a wall, along the verge of the alluvial plain of the river.
The alluvial plains on the side appeared fertile, and it is supposed that they are well adapted to the growth of corn.
site stretches over the alluvial plain, delta and coast of the Mono River.
Rajan Pur District consists of alluvial plain in the east and mountain range in the west.
miles (1,772 km2) mainly on the left bank of the Ravi River which flows through a flat alluvial plain.
According to Wikipedia, the city lies on flat alluvial plain, reclaimed mostly from the swampy areas due to urbanization.
The physiography is dominated by various units; aeolian dune, playa basin, alluvial plain, plain and the irrigated land (Northern Floodplains Regional Planning Committee 2004).
Alluvial plain represents the runoff zone while valley belongs to discharge zone, and the denudational hills constitute the infiltration area.
To the south, an ample alluvial plain is the ground for most agricultural activities and the largest settlements.
Located in the far east of the country near the border with Oman, the site comprises coastal subtidal, intertidal (sand beach, mangroves, mud and tidal channels), supratidal sand, salt marsh and saline flats, as well as encompassing a narrow alluvial plain dominated by Acacia woodland.
There are three main areas to the park: the first is the alluvial plain covered in acacias; the second consists of the wadis (gorges) in the mountains and the third is the sparsely vegetated hills and rocky outcrops which form the northern boundaries and the higher elevations.
Wall (191:1932) noted that the species was plentiful "in a piece of ground adjoining a stream", likely referring to the numerous smaller ponds and streams found on the large alluvial plain formed by the Mastuj (= Kunar) and Yarkhoon rivers.