knickpoint

knickpoint
    a) A point of abrupt inflection in the longitudinal profile of a stream or of its valley (e.g., a waterfall); it marks the maximum headward erosion of a new erosion cycle that grades to a new, lower base level.
    b) Any interruption or break in slope.
   SW

Glossary of landform and geologic terms. 2013.

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  • knickpoint — /ˈnɪkpɔɪnt/ (say nikpoynt) noun the point at which there is a sudden change in the gradient of a river bed as a result of natural erosion, this point then travelling up the river until it reaches hard rock …  

  • knickpoint — ˈnikˌ ̷ ̷ noun Etymology: part transl. of German knickpunkt, from knicken to bend + punkt point : a place in a stream bed where a nick occurs …   Useful english dictionary

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  • River delta — Nile River delta, as seen from Earth orbit. The Nile is an example of a wave dominated delta that has the classic Greek delta (Δ) shape after which river deltas were named. A delta is a landform that is formed at the mouth of a river where that… …   Wikipedia

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