An important area for breeding and passage waterbirds as well as amphibians and dragonflies. The site lies in an area of intensive cultivation. Ramsar site no. 509. A storage reservoir on the Aare River created by the 1935 construction of a dam. Vegetation includes associated reedbeds, Salix thickets, alluvial and Fraxinus woodland.
Human activities are nature conservation, power generation, forestry, and agriculture.
An important area for small numbers of passage and wintering waterbirds. During migration periods, the area is one of the most important resting places for waders in Switzerland. Ramsar site no. Lac artificiel de Niederried. An artificial lake on the Aare River, created by construction of a barrage in 1913.