Ślęza
Ślęza is a 78.6 km river in Lower Silesia, southern Poland, a left tributary of the Oder. It starts in the Niemcza Hills, part of the Sudeten Foreland, and flows near Mount Ślęża through the Silesian Lowland and enters the Oder in Wrocław.
The most important tributary is the Mała Ślęza. The most important towns on the river are: Niemcza, Tyniec nad Ślęzą, Jordanów Śląski and Wrocław.
The name is probably derived from a Silesian word meaning "wet swampy place". In a papal bull from Hadrian IV in 1155, the river is called the Selenza.
The names of the Ślęza and Mount Ślęża are both of Silesian origin, but the Ślęza is spelled with a standard z and Mount Ślęża is spelled with a ż, pronounced like an English zh.
