Moses Lake's Sister City is Yonezawa, Japan. The two cities have had a student exchange program for high school students since 1981. The Moses Lake-Yonezawa Exchange Program is operated through a non-profit organization. More information can be found on their Facebook page.
The 40th Anniversary events were disrupted due to the COVID-19 Pandemic and both cities arranged to have a live online event. The planting of the cherry blossom tree in the City of Moses Lake Japanese Garden is included in the recording of the online video. Yonezawa sent a picture of the rhododendron they planted to commemorate the long time relation. Photo of banners produced for each City shown below and the tapestry gift given to Moses Lake was presented during Council meeting on October 25, 2022 (Mayor's Report at 10 minute mark) and resides framed in the Council Chambers.