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  2. Crest and trough - Wikipedia

    en.wikipedia.org/wiki/Crest_and_trough

    A crest is a point on a surface wave where the displacement of the medium is at a maximum. A trough is the opposite of a crest, so the minimum or lowest point of the wave. When the crests and troughs of two sine waves of equal amplitude and frequency intersect or collide, while being in phase with each other, the result is called constructive ...

  3. Crest (hydrology) - Wikipedia

    en.wikipedia.org/wiki/Crest_(hydrology)

    In hydrology, crest is the highest level above a certain point (the datum point, or reference point) that a river will reach in a certain amount of time. This term is usually limited to a flooding event and from ground level.

  4. Hoye-Crest - Wikipedia

    en.wikipedia.org/wiki/Hoye-Crest

    Hoye-Crest is a summit along Backbone Mountain just inside of Garrett County, Maryland. It is the highest natural point in Maryland at an elevation of 3,360 feet (1,020 m). [3] The location, named for Captain Charles E. Hoye (1876–1951), founder of the Garrett County Historical Society, offers a view of the North Branch Potomac River valley ...

  5. Breaking wave - Wikipedia

    en.wikipedia.org/wiki/Breaking_wave

    At this point, simple physical models that describe wave dynamics often become invalid, particularly those that assume linear behaviour. The most generally familiar sort of breaking wave is the breaking of water surface waves on a coastline. Wave breaking generally occurs where the amplitude reaches the point that the crest of the wave actually ...

  6. Fold (geology) - Wikipedia

    en.wikipedia.org/wiki/Fold_(geology)

    The crest of the fold represents the highest point of the fold surface whereas the trough is the lowest point. The inflection point of a fold is the point on a limb at which the concavity reverses; on regular folds, this is the midpoint of the limb. Flank & hinge

  7. Geometric design of roads - Wikipedia

    en.wikipedia.org/wiki/Geometric_design_of_roads

    Crest vertical curves are those that have a tangent slope at the end of the curve that is lower than that of the beginning of the curve. When driving on a crest curve, the road appears as a hill, with the vehicle first going uphill before reaching the top of the curve and continuing downhill. The profile also affects road drainage.

  8. Flood stage - Wikipedia

    en.wikipedia.org/wiki/Flood_stage

    Example graph of stream stages showing Action Stage, Flood Stage, Moderate Stage, Major Stage, and Record Stage on a river.. Flood stage is the water level, as read by a stream gauge or tide gauge, for a body of water at a particular location, measured from the level at which a body of water threatens lives, property, commerce, or travel. [1]

  9. Wave height - Wikipedia

    en.wikipedia.org/wiki/Wave_height

    Wave characteristics. In fluid dynamics, the wave height of a surface wave is the difference between the elevations of a crest and a neighboring trough. [1] Wave height is a term used by mariners, as well as in coastal, ocean and naval engineering.