Enns (river) Enns (river) The Enns is a southern tributary of the Danube River, joining northward at Enns, Austria. The Enns River spans , in a flat-J-shape. It flows from its source near the towns of Gasthofalm and Flachau, generally eastward through Radstadt, Schladming, and Liezen, then turns north near Hieflau, to flow past Weyer and Ternberg through Steyr, and further north to the Danube at Enns ("see map in References"). The Enns has its source in the Radstädter Tauern mountains in the Austrian state of Salzburg. In a valley which developed during the ice age, it flows at the border between
Rossola nera bunch rot and powdery mildew. In 2000 there were 115 hectares (284 acres) of Rossola nera planted in Italy, the vast majority of it in the Valtellina region of Lombardy and extending all the way to the Swiss border. Here the grape is a minor blending component permitted to account for between 5-25% of the various "Denominazione di origine controllata" (DOC) red wines of Lombardy. In the Valtellina DOC, up to 20% of Rossola nera can be blended into the Nebbiolo-based wine (known locally as "Chiavennasca") provided the grapes are limited to a harvest yield of 12 tonnes/ha. The finished