Naab

The Naab is a river in Bavaria, Germany. It is a left tributary of the Danube, flowing southeast through the Upper Palatinate before joining the Danube near Regensburg.

The Naab runs about 130 kilometers in length, rising in the northern part of the Bavarian region and draining a broad, forested and agricultural landscape. Along its course it passes towns such as Weiden in der Oberpfalz, Nabburg, and Schwandorf, shaping a valley known as the Naabtal. The river's path is marked by bridges, small mills, and flood-control structures that serve nearby communities.

Ecologically, the Naab supports a variety of habitats along its riparian zones and in adjacent floodplains. The surrounding landscapes combine woodland, meadows, and cultivated land, and the river is used for recreation, boating, and fishing. Water management and environmental protection efforts aim to preserve water quality and biodiversity while maintaining the river’s role in regional water supply and agriculture.

The Naab contributes to the Danube’s flow and hydrology. Its basin is part of the larger Danube basin, and the river's health is tied to regional conservation and land-use practices. The confluence with the Danube lies near Regensburg, a historic city at the downstream end of the Naab valley.