Killington Beck (grid reference SD 590 910) is a brook or beck in Cumbria, England about 9.3 miles (15.0 km) long. It starts at a height of about 980 feet (300 m) on Lambrigg Fell between Kendal and Sedbergh. Below the dam, the water is not carried to the canal in an aqueduct; the reservoir merely controls the flow in the beck. A small dam about 6 miles (9.7 km) downstream near Crooklands diverts water into the canal. By this time, the beck has become the Peasey Beck which joins the River Bela near Milnthorpe and that in turn joins the River Kent.