Cherniy (Black) Irtysh Delta

Country/territory: Kazakhstan

IBA criteria met: A1, A4i (2006)
For more information about IBA criteria, please click here

Area: 104,200 ha

Association for the Conservation of Biodiversity in Kazakhstan
IBA conservation status
Year of assessment (most recent) Threat (pressure) Condition (state) Action (response)
2014 medium unfavourable negligible
For more information about IBA monitoring, please click here

Site summary
Following the construction of the hydroelectric power complex on the Bukhtarma river about half a century ago, there have been gradual changes in the natural layout of the vast Chyorny (Black) Irtysh delta. As a result, the wetland network of previously seasonally flooded areas have been completely inundated, while a new delta structure has emerged in the higher section of the Chyrony Irtysh, submerging the previously dry tracts of the Zaisan Hollow. Presently, the delta extends, in its widest parts, up to 40 km east to west, and 30 km north to south.

Appreciation for the valuable information provided by local naturalist A.I. Karamyshev.

Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Cherniy (Black) Irtysh Delta. Downloaded from on 31/05/2023.