What is "redlbach"

The Redlbach is a stream in Upper Austria with a width of 5 metres and a length of approximately 10 kilometres. It joins the Vöckla River west of Vöcklamarkt, which itself joins the Ager River. The creek is partly untreated, partly modulated with backwater area. Thanks to its excellent water quality (A grade) the creek is rich in trout.