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  2. Drainage gradient - Wikipedia

    en.wikipedia.org/wiki/Drainage_gradient

    Drainage gradient (DG) is a term in road design, defined as the combined slope due to road surface cross slope (CS) and longitudinal slope (hilliness). Although the term may not be used, the concept is also used in roof design and landscape architecture. If the drainage gradient is too low, rain and melt water drainage will be insufficient.

  3. Cross slope - Wikipedia

    en.wikipedia.org/wiki/Cross_slope

    Cross section of a road. 1. Gutter; 2. Shoulder; 3. Sub-base; 4. Base course; 5. Asphalt. Cross slope, cross fall or camber is a geometric feature of pavement surfaces: the transverse slope with respect to the horizon.

  4. Drainage equation - Wikipedia

    en.wikipedia.org/wiki/Drainage_equation

    the design drain spacing (L) can be found from the equation in dependence of the drain depth (Dd) and drain radius (r). Drainage criteria One would not want the water table to be too shallow to avoid crop yield depression nor too deep to avoid drought conditions. This is a subject of drainage research.

  5. Topographic map - Wikipedia

    en.wikipedia.org/wiki/Topographic_map

    In modern mapping, a topographic map or topographic sheet is a type of map characterized by large-scale detail and quantitative representation of relief features, usually using contour lines (connecting points of equal elevation), but historically using a variety of methods.

  6. Watershed delineation - Wikipedia

    en.wikipedia.org/wiki/Watershed_delineation

    Watershed delineation is the process of identifying the boundary of a watershed, also referred to as a catchment, drainage basin, or river basin.It is an important step in many areas of environmental science, engineering, and management, for example to study flooding, aquatic habitat, or water pollution.

  7. Drainage system (geomorphology) - Wikipedia

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

    Dendritic drainage: the Yarlung Tsangpo River, Tibet, seen from space: snow cover has melted in the valley system. In geomorphology, drainage systems, also known as river systems, are the patterns formed by the streams, rivers, and lakes in a particular drainage basin. They are governed by the topography of land, whether a particular region is ...

  8. Your Cholesterol Could Be A Key Indicator Of Dementia. A ...

    www.aol.com/cholesterol-could-key-indicator...

    One form of dementia—called vascular dementia—is caused by regular small strokes, he points out. “Fluctuating cholesterol levels may therefore cause fluctuating risk for strokes,” Segil says.

  9. Geonets - Wikipedia

    en.wikipedia.org/wiki/Geonets

    i = hydraulic gradient (dimensionless), A = flow cross-section area (m 2), θ = transmissivity (m 2 /s), W = width (m), and t = thickness (m). As seen in the equation, q/W and θ carry the same units and are directly related to one another by means of the hydraulic gradient i. At a hydraulic gradient of 1.0, they are numerically identical.