Tirschenreuther Waldnaab
The left, eastern source river of the Waldnaab, the Tirschenreuther Waldnaab, rises at 816 m, on the German-Czech border in the Upper Palatinate Forest near the 901 m high Entenbühl or its smaller brother, the Naabberg 853 m. The source, also “Kreuzbrunnen “, is located in the Tirschenreuth district, close to Silberhütte. From the spring, the water flows just three meters onto German soil before it touches western Bohemia for two kilometers as Lesní Nába and, flowing to the northwest, crosses the German border again and reaches Bärnau.
After leaving the forest, the first thing it flows through is the village of Naab. In Bärnau, the Tirschenreuther Waldnaab bends to the west and flows through the approximately 88 hectare Liebenstein flood reservoir slightly below Bärnau-Thanhausen or north of Plößberg. It then turns northwards and reaches Tirschenreuth, where it turns west again and flows in numerous meanders through the Waldnaabaue, which is rich in lakes.
Passing Falkenberg Castle in Falkenberg, now flowing to the southwest, it reaches the approximately 12 kilometer long wooded Waldnaab valley with many granite rock formations on or in the river. North of Windischeschenbach, after approx. 62 km, the Tirschenreuther Waldnaab merges with the Fichtelnaab and then becomes the Waldnaab.
Source: Excerpts from Wikipedia