Schmerikon is a municipality in the Wahlkreis of See-Gaster in the canton of St. Gallen in Switzerland. In the local Swiss German dialect it is cal…Schmerikon is a municipality in the Wahlkreis of See-Gaster in the canton of St. Gallen in Switzerland. In the local Swiss German dialect it is called Schmerike. Schmerikon is located at the head of Lake Zurich, on the section of the lake known as the Obersee and where the Linth river enters the lake. Part of the municipality is a natural reserve, particularly along the lake shore.