 Of the water in the municipality, 1.4% is in lakes and 2.2% is in rivers and streams.The municipality is located on the right bank of the Aare reservoir and on the edge of the Frienisberg Plateau.It consists of the villages of Radelfingen and Detligen along with the hamlets of Landerswil, Ostermanigen, Jucher, Matzwil, Oltigen and Oberruntigen as well as scattered individual farm houses.