The Oleška is a river in the Czech Republic, a left tributary of the Jizera River. It flows through the Liberec and Hradec Králové regions. It is long.
Etymology The name is derived from the Czech word olše (i.e. 'alder'), meaning "water flowing between alders".
Characteristic
The Oleška originates in the territory of Studenec in the Giant Mountains Foothills at an elevation of and flows to Semily, where it enters the Jizera River at an elevation of . It is long. Its drainage basin has an area of .
The longest tributaries of the Oleška are: Tributary Length (km) Side Popelka 13.1 left Tampelačka 10.1 right Rokytka 7.8 left
Course The river flows through the municipal territories of Studenec, Levínská Olešnice, Stará Paka, Bělá, Libštát, Košťálov, Slaná and Semily.
Fauna Fish species that live in the river include brown trout, rainbow trout, brook trout and grayling.
See also List of rivers of the Czech Republic
References
External links
River flow at Slaná station – Flood Warning and Forecasting Service of the Czech Hydrometeorological Institute