Astronaut Soichi Noguchi captured from ISS Lake Saroma, Hokkaido, Japan.

Lake Saroma, also Saroma Lagoon, is a coastal lagoon (hence a body of brackish water) in Saroma, Kitami, and Yubetsu Hokkaido, Japan. It is located in Abashiri Quasi-National Park. By area, the lake is the third largest in Japan and the largest in Hokkaido. The name comes from the Ainu place name Saruomahetsu, meaning “place of many Miscanthus reeds and rushes”. Another nearby coastal lagoon is Notoro Lagoon, about 15km to the east.
The local scenery on the ground is as follows.

Reference: Soichi Noguchi’s Tweet
See earthview photo gallery: LiVEARTH