The Grantham Canal ran 33 miles (53 km) from Grantham through 18 locks to West Bridgford, where it joined the River Trent. It was built primarily for the transportation of coal to Grantham. It opened in 1797 and its profitability steadily increased until 1841. It was then sold to a railway company, declined, and was finally closed in 1936. It was used as a water supply for agriculture, and so most of it remained in water after closure, although bridges were lowered. Since the 1970s, the Grantham Canal Society have been working to restore parts of it. Two stretches are now navigable to small vessels. A new route will be required where the canal joins the Trent, as road building has severed the original one.

Grantham is a market town in the South Kesteven district of Lincolnshire, England, situated on the banks of the River Witham and bounded to the west by the A1 road. It lies some 23 miles (37 km) south of Lincoln and 22 miles (35 km) east of Nottingham. The population in 2016 was put at 44,580. The town is the largest settlement and the administrative centre of South Kesteven District.