From News Desk

Aizuwakamatsu City, Koriyama City, Inawashiro Town; and Fukushima Prefecture have cooperated to see Lake Inawashiro registered under the Ramsar Convention. As of July 15, 2025, the process has been concluded to place Lake Inawashiro on the list of registered wetlands of international importance under the convention. This makes it the 54th such location in Japan and the second after Oze, in Fukushima Prefecture.
The Ramsar Convention is an international agreement adopted in Ramsar, Iran, in 1971, aiming to conserve wetlands and waterfowl habitats. In order to balance conservation with the lives and livelihoods of local people, it champions “wise use” of wetlands, valuing exchange, nurturing relevant skill sets, education, participation, and raising awareness. Lake Inawashiro was recognized for its connection with local ecosystems and its value as a migration spot for waterfowl, which led to its registration.
Lake Inawashiro is the 4th largest lake in Japan and with its rich aquatic habitat, it is known as home to many wild birds and aquatic plants.
Shallows are particularly widespread on the northern shore; and the lake’s wide area and significant depth lead to the water temperature decreasing less in winter, which in turn means the lake does not freeze. Due to this, it is a valuable spot for ducks and swans to winter. Further, Lake Inawashiro and its surroundings are home to 197 different species of fauna, including 111 species of birds.
As for flora, over 100 species of aquatic plants grow here, and it is also the largest national habitat for fringed water lilies. A total of 705 species of ground plants have been confirmed on the lake’s shores, making this an important location for conserving biodiversity in the region.
The lake water is used for hydroelectric power, irrigation and supplying both Aizuwakamatsu City and Koriyama City with water. Additionally, the inflowing rivers create multiple sand beaches near the river mouths, creating the distinctive “hakusha seisho” (white beach, green pine trees) vistas represented by Tenjinhama Beach and others. This beautiful natural view makes it one of Fukushima Prefecture’s more major tourism destinations, as well as a site for swimming in the lake and other water-related activities. The lakeside is used as a camping site and also contributes greatly to developing the regional economy.
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