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  2. Stream gradient - Wikipedia

    en.wikipedia.org/wiki/Stream_gradient

    The world average river reach slope is 2.6 m/km or 0.26%; [2] a slope smaller than 1% and greater than 4% is considered gentle and steep, respectively. [3] Stream gradient may change along the stream course. An average gradient can be defined, known as the relief ratio, which gives the average drop in elevation per unit length of river. [4]

  3. Drainage density - Wikipedia

    en.wikipedia.org/wiki/Drainage_density

    The region features steep slopes, high relief, an arid climate, and a complete absence of vegetation. [13] [7] Because the slopes of hillslopes are often greater than the angle of repose, the dominant erosional process in the Caineville badlands is mass wasting. [13]

  4. Drainage system (geomorphology) - Wikipedia

    en.wikipedia.org/wiki/Drainage_system...

    Along a strike valley, smaller tributaries feed into the steep slopes of mountainsides. These tributaries enter the main river about perpendicular, causing a trellis-like appearance of the system. They form where hard and soft formations exist on both banks of the main river, and are reflective of height, accentuated by erosion.

  5. São Domingos, Cape Verde (municipality) - Wikipedia

    en.wikipedia.org/wiki/São_Domingos,_Cape_Verde...

    Farmlands cover the eastern and the central parts, where runoff from the center of the island allows a higher water table and loamier soils than the dense clays found on most of the island. Mountains dominate the western border, where the steep relief and lack of rainwater runoff makes large-scale agriculture impractical.

  6. Grade (slope) - Wikipedia

    en.wikipedia.org/wiki/Grade_(slope)

    d = run Δh = rise l = slope length α = angle of inclination. The grade (US) or gradient (UK) (also called stepth, slope, incline, mainfall, pitch or rise) of a physical feature, landform or constructed line refers to the tangent of the angle of that surface to the horizontal.

  7. Vegetation and slope stability - Wikipedia

    en.wikipedia.org/wiki/Vegetation_and_slope_stability

    Wind throw is the toppling of a tree due to the force of the wind, this exposes the root plate and adjacent soil beneath the tree and influences slope stability. Wind throw is a factor when considering one tree on a slope; however, it is of lesser importance when considering general slope stability for a body of trees as the wind forces involved represent a smaller percentage of the potential ...

  8. Geology of the Pearl River Delta - Wikipedia

    en.wikipedia.org/wiki/Geology_of_the_Pearl_River...

    Due to the presence of bedrock islands in the estuary area and the main river being constrained by the steep relief surrounding the deltaic region, the main channel's course has remained relatively stable, preventing the formation of deltaic lobes akin to those in the Mississippi River Delta. Consequently, the deltaic plains are concentrated in ...

  9. Catena (soil) - Wikipedia

    en.wikipedia.org/wiki/Catena_(soil)

    A catena is a sequence of soils down a slope, created by the balance of processes such as precipitation, infiltration and runoff.. A catena in soil science is a series of distinct but co-evolving soils arrayed down a slope. [1]

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