Murgseen are a group of lakes in Murgtal (Murg valley) in the Canton of St. Gallen, Switzerland. The three lakes are drained by Murgbach, which empties into Lake Walen at Murg in the municipality of Quarten.The three lakes are:Oberer Murgsee (or "Ober Murgsee", Upper lake) at an elevation of 1820 m; the largest, with a surface area of 20 haMittlerer Murgsee (or "Mittlerer Murgsee") at 1808 mUnterer Murgsee (or "Unter Murgsee", Lower lake) at 1682 m