Glossary entry (derived from question below)
French term or phrase:
zone de battement de la nappe
English translation:
zone of water table fluctuation (for a lay audience) / zone of intermittent saturation (for a technical audience)
French term
zone de battement de la nappe
| 4 | zone of water table fluctuation |
Denise Pavao
|
| 3 +1 | zone of (intermittent) saturation |
Elizabeth Tamblin
|
| 3 | zone of fluctuation of piezometric level |
Anca Florescu-Mitchell
|
Oct 1, 2014 14:04: Denise Pavao Created KOG entry
Oct 1, 2014 14:04: Denise Pavao changed "Edited KOG entry" from "<a href="/profile/1738349">Denise Pavao's</a> old entry - "zone de battement de la nappe"" to ""zone of water table fluctuation""
Oct 1, 2014 14:07: Denise Pavao changed "Edited KOG entry" from "<a href="/profile/1738349">Denise Pavao's</a> old entry - "zone de battement de la nappe"" to ""zone of water table fluctuation""
Oct 1, 2014 14:11: Denise Pavao changed "Edited KOG entry" from "<a href="/profile/1738349">Denise Pavao's</a> old entry - "zone de battement de la nappe"" to ""zone of water table fluctuation (for a lay audience)""
Proposed translations
zone of water table fluctuation
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Note added at 1 day5 hrs (2014-09-30 18:34:57 GMT)
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Please see Discussion Entry
...consistent with the winter high nitrate peaks being derived from increased permeability in the zone of water table fluctuation
At Diana Lake, elevated concentrations of Fe and Al have been found in the zone of water table fluctuation
France
Fast and accurate technical translations
Native in: French 
, English
Works in: French to English, English to French
zone of fluctuation of piezometric level
vs
http://www.sisyphe.upmc.fr/piren/webfm_send/784
United Kingdom
MA-qualified translator and proofreader
Native in: English
Works in: French to English
zone of (intermittent) saturation
http://www.inondationsnappes.fr/presentation.asp
'… On appelle «battement de la nappe» la variation de son niveau au cours de l'année.'
This page explains the zone of saturation:
http://www.corrosionpedia.com/definition/1199/zone-of-satura...
See also a Glossary of Groundwater Terms:
http://www.co.portage.wi.us/groundwater/undrstnd/gloss.htm
Discussion
For a technical audience "zone of intermittent saturation" would be more appropriate because that is a zone well-defined by hydro geologists. But I wouldn't use the parentheses.
For a lay audience, "zone of water table fluctuation" would provide a more understandable phrase.