|Lake name:||Salagou||Country:||France||GIG Region:||Med|
|GIG Type:||----||Lake code:||FRDL119||Altitude(m a.s.l.):||139|
|Area (km²):||7.2||Mean depth (m):||15||Mixing regime:||----|
|Alkalinity (m eq/l):||1.8||Retention time (yr):||----||Chlorophyll a (µg/l):||2.33|
|Total phosphorus (µg/l):||187.02||Eutrophication status:||2 - Medium||Hydromorphological status:||----|
The Salagou lake is a 40 year-old reservoir but non affected by artificial water level fluctuations. This reservoir is closed to Montpellier (50km) in a winegrowing region, that's why its principal use is water supply for irrigation. About 27% of its big catchment area is covered by agriculture. This lake is very popular for recreative activities, due to water temperatures reaching 28°C during summer. Fauna and flora are very particular because of the red soils, made of iron oxide (called "Ruffe"). Two of the Biological Quality Elements were sampled in 2009: phytoplankton and macrophytes. Macrophyte communities are dominated by Myriophyllum spicatum and Ceratophyllum demersum. Within the WISER project, an hydro-acoustic sampling will be added to a gillnet survey of fish in 2010.
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