Wikipedia
Želivka
The Želivka is a river in the Czech Republic, the left tributary of the Sázava River. It originates at the northern slope of the Troják Mountain at the elevation of 677 m and flows for 103.89 km. It enters the Sázava River near Zruč nad Sázavou.
Its longest tributary is the Trnava River. The Švihov Dam is constructed on the river.