The River Smite, a tributary of the River Devon, flows for 20 miles (32 km) through Leicestershire and south-east Nottinghamshire, England. The source is near the hamlet of Holwell, Leicestershire and it joins the Devon near Shelton, Nottinghamshire. The Smite and its tributaries, such as the River Whipling, the Stroom Dyke, and the Dalby Brook, drain an area of 193 square kilometres (75 sq mi) of farmland in the Vale of Belvoir.

The River Devon is a tributary of the River Trent, which rises in Leicestershire and joins the Trent at Newark in Nottinghamshire, England. In its upper reaches, it supplies Knipton Reservoir, which was built to supply water to the Grantham Canal, and Belvoir Lakes, designed by Capability Brown. It passes under the Grantham Canal, and then through Bottesford, where it is spanned by five railway bridges, only one of which is still used for its original purpose. On the outskirts of Newark, it passes by two Civil War structures, and just before it joins the Trent it becomes navigable, with a marina located on the west bank. Its name is pronounced "Deevon", not as spelt.