The Garte is a small tributary to the Leine River in Lower Saxony, Germany. The Garte is a 23 km (14 mi) long stream that rises to the east of Weißenborn at an elevation of 303 m above sea level (NN). Towns that it runs through or by include Beienrode, Kerstlingerode, Rittmarshausen (where it is joined by the Bernsroder Bach), Wöllmarshausen, Benniehausen (where the Bischhäuser Bach joins it), Klein Lengden (where the Bramke and Eichbach join it), and Diemarden. The stream joins the Leine River south of Göttingen. With a drop of 151 m, the stream averages a bed slope of 6.6‰. The watershed is 87 km2 (34 sq mi). It is classified as a third-order (i.e., lowest) stream according to the German system of body-of-water ranking.