Samawah has a large salt lake called Sawa Lake, which once had a tourist village that has since fallen into disrepair. The lake is located 25 km (15 mi) to the north of the city centre and is accessible by road. The lake has no obvious source, neither river nor ancient link to a sea. The water is extremely salty due to heavy evaporation in the searing heat of Mesopotamia and supports no marine life. A unique feature of the lake is that the water is above ground level surrounded by natural levees. Due to the high levels of salt in the lake, the levees heal themselves if a break is made in the levee, stopping the water from flowing down to ground level. The salt levels also improve buoyancy, and many migratory birds walk on the lake.