|Official name||Gavkhouni Lake and marshes of the lower Zaindeh Rud|
|Designated||23 June 1975|
Gavkhouni (Persian: گاوخونی, romanized: Gāwxuni) also written as Gawkhuni or Batlaq-e-Gavkhuni, located in the Iranian Plateau in central Iran, east of city of Isfahan, is the terminal basin of the Zayandeh River. Gavkhouni is a salt marsh with a salinity of 31.5% and an average depth of about 1 m. The salt marsh can dry up in summer. The Zayandeh River originates in the Zagros mountains and travels around 300 km, before terminating in Gavkhouni.
Gavkhouni receives pollution from Isfahan and other urban sources. Isfahan is a major oasis city on the Zayandeh River with a population over 1.5 million.
- "Gavkhouni Lake and marshes of the lower Zaindeh Rud". Ramsar Sites Information Service. Retrieved 25 April 2018.
- Ramsar sites database Archived September 27, 2009, at the Wayback Machine
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