The river Ahr is a classic flyfishing stream with trout and grayling in the ancient volcanic German hills, the Eifel. The Ahr is a tributary of the Rhine. Its source is approximately 470 metres above sea level in Blankenheim. (In the cellar of a timber-frame house near the castle of Blankenheim.) It crosses from North Rhine-Westphalia into Rhineland-Palatinate. The Ahr flows through Ahr valley passing through the villages of Schuld, Altenahr and Bad Neuenahr-Ahrweiler. I fish it quite close to the source, just a few kilometers below Blankenheim. Enjoy.