Hasensee

Hasensee is a lake in the canton of Thurgau, Switzerland. It is located in the same valley as Nussbaumersee and Hüttwilersee. Its surface area is and the surface elevation is 434.16 m, after being lowered by 1.5 m in World War II.
Hasensee is or was also known as "Buchemer See" or "oberer See" (upper lake).