Water body type of the year: rocky lime-poor highland river
UBA: Another 15 percent of this type to achieve "good" status by 2015
The 2011 water body type of the year, which experts refer to as “Small coarse substrate-dominated siliceous highland river (type 5), is most worthy of our attention, as its more than 18,000-km of waterways are the most common water body type in Germany. It winds its way throughout the German Central Uplands at altitudes ranging from 250-1,000 metres- through the Harz, Thuringian Forest, Bavarian Forest, Ore Mountains, the Franconian and Black Forests, and the Rhenish Slate Range. When the waterway is in good health it is host to caddisflies, stoneflies, mayflies, and many other aquatic insects. They feed on the algal growth on rocks as well as leaf and wood residues in the water. The aquatic insects themselves provide food for brown trout, the common bullhead, loach, and other fish.