Mullutu-Suurlaht  Mullutu-Suurlaht (also Mullutu Suurlaht) is the fourth largest lake in Estonia. It is located on the island of Saaremaa, about west of the town of Kuressaare. It has an area of and the max. depth is . Mullutu-Suurlaht is a brackish waterbody that consists of two parts:  During the regular flood in spring (usual rise is , max ) Mullutu-Suurlaht merges with nearby Paadla, Vägara and Kaalupea bays and draws a temporary waterbody up to . Mullutu-Suurlaht is drained by the Nasva River. Due to a strong connection with sea through Nasva river the lake is rich in fish, main species include bleak, burbot, crucian carp, dace, eel, gudgeon, ide, perch, pike, ruffe, roach, rudd and tench.