Sora (river)

The Sora (German: Zayer or Zeier) is a right affluent of the Sava River in western Slovenia. The Sora gathers its waters mainly from the Škofja Loka Hills. Its source branches are the Poljane Sora (Poljanska Sora, also Poljanščica), named after the Poljane Valley (Poljanska dolina), and the Selca Sora  (Selška Sora, also Selščica), named after the Selca Valley (Selška dolina). The Poljane Sora is larger and is 43 km in length, while the Selca Sora is 32 km in length. They flow together in Škofja Loka and continue the flow as the Sora for the next 9.2 km until Medvode, where the Sora joins the Sava. Including the Poljane Sora, the Sora is 52 km in length. This makes it the 15th longest river of Slovenia.

The Sora is of torrential character and often floods. Its average discharge at the outflow is 25 m3/s. Its largest discharge, measured in 1990, was 690 m3/s.