mean water level


mean water level
the mean surface level as determined by averaging the heights of water at equal intervals of time, usually hourly

Dictionary of ichthyology. 2009.

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  • mean water level — vidutinis vandens lygis statusas T sritis ekologija ir aplinkotyra apibrėžtis Aritmetinis vandens lygio tame pačiame matavimo taške (upėje, ežere ar kitame vandens telkinyje) tam tikru metų ar paros laiku vidurkis. atitikmenys: angl. mean water… …   Ekologijos terminų aiškinamasis žodynas

  • mean sea level — the mean surface water level determined by averaging heights at all stages of the tide over a certain period, usually a 19 year period. Usually determined from a fixed predetermined reference level or chart datum …   Dictionary of ichthyology

  • mean tide level — half tide level (plane midway between mean high water and mean low water) …   Dictionary of ichthyology

  • mean sea level — noun the sea level halfway between the mean levels of high and low water …   English new terms dictionary

  • Water level — Level Lev el (l[e^]v [e^]l), n. [OE. level, livel, OF. livel, F. niveau, fr. L. libella level, water level, a plumb level, dim. of libra pound, measure for liquids, balance, water poise, level. Cf. {Librate}, {Libella}.] 1. A line or surface to… …   The Collaborative International Dictionary of English

  • Level — Lev el (l[e^]v [e^]l), n. [OE. level, livel, OF. livel, F. niveau, fr. L. libella level, water level, a plumb level, dim. of libra pound, measure for liquids, balance, water poise, level. Cf. {Librate}, {Libella}.] 1. A line or surface to which,… …   The Collaborative International Dictionary of English

  • Level of the sea — Level Lev el (l[e^]v [e^]l), n. [OE. level, livel, OF. livel, F. niveau, fr. L. libella level, water level, a plumb level, dim. of libra pound, measure for liquids, balance, water poise, level. Cf. {Librate}, {Libella}.] 1. A line or surface to… …   The Collaborative International Dictionary of English

  • mean — 1. v.tr. (past and past part. meant) 1 a (often foll. by to + infin.) have as one s purpose or intention; have in mind (they really mean mischief; I didn t mean to break it). b (foll. by by) have as a motive in explanation (what do you mean by… …   Useful english dictionary

  • Water clock — For the individual water clock at The Children s Museum of Indianapolis, see Water clock (Indianapolis). A display of two outflow water clocks from the Ancient Agora Museum in Athens. The top is an original from the late 5th century BC. The… …   Wikipedia

  • Water-meadow — A water meadow (also water meadow or watermeadow) is an area of grassland subject to controlled irrigation to increase agricultural productivity. Water meadows were mainly used in Europe from the 16th to the early 20th centuries. Working water… …   Wikipedia


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