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Related to isohyets: isopleth


A line drawn on a map connecting points that receive equal amounts of rainfall.

[iso- + Greek hūetos, rain; see seuə- in Indo-European roots.]


(Physical Geography) a line on a map connecting places having equal rainfall
[C19: from iso- + -hyet, from Greek huetos rain]


(ˌaɪ səˈhaɪ ət)

a line drawn on a map connecting points having equal rainfall at a certain time or for a stated period.
[1895–1900; iso- + -hyet < Greek hyetós rain]
i`so•hy′et•al, adj.


A line drawn on a map linking places that have the same rainfall.


[ˌaɪsəʊˈhaɪɪt] nisoieta
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References in periodicals archive ?
The six rainiest day's isohyets in the flooding window, November-December 2011.
Mean rainfall isohyets have shifted by more than 185 km southwards (Jauro, 2007).
A map of isohyets (contours of equal rainfall) showing mean annual UAE rainfall for the 18-year period 1971/1972 through 1988/1989 indicates a figure for the western Ru'us al-Jibal in excess of 160 mm, but apparently not in excess of 180 mm (UAE University 1993, Plate 50).
Usually it was the 10-inch line that was nominated, though the claim has been made for other isohyets, both imperial and metric.
In our analysis, we have adopted the 500 and 900 mm annual rainfall isohyets as the lower and upper limits for the HRZ in south-eastern Australia.
The Gulf of Mexico can be divided into three broad geographic regions according to the weather patterns: eastern, southern and northwestern, because of the southwest-northeast trending isotherms and isohyets that trend onshore in the northeast region (Douglas & Englehart 1981).