Lakes Asahiike and Unoike

Country/territory: Japan

IBA criteria met: A4i (2004)
For more information about IBA criteria, please click here

Area: 80 ha

Wild Bird Society of Japan
IBA conservation status
Year of assessment (most recent) State (condition) Pressure (threat) Response (action)
2015 near favourable low negligible
For more information about IBA monitoring, please click here

Site description (2007 baseline)
Lake Asahiike in Niigata Prefecture is the largest lagoon among six lagoons scattered at northern Kubiki Plain, and the total area is about 79 ha. On the northwestern side of the lagoon, reed beds are found, and Nuphar japonicum, Trapa japonica and Brasenia schreberi grow in the lagoon. Unoike, neighboring the western side of Asahiike is a lagoon of 49ha, and Nelumbo nucifera cover the entire surface of the lake. Unoike's shape is like a peninsula jutting out into the lagoon, and the northwestern side is a city park.

Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Lakes Asahiike and Unoike. Downloaded from on 01/10/2023.