 Somewhere here, the name of the river changes from the Slea to the Kyme Eau. The village of South Kyme follows, with its four-storey fortified tower, built in the 14th century for Sir Gilbert d 'Umframville. It is 77 feet (23 m) high, and was surrounded by a moat. Two road bridges and a footbridge cross the navigation in the village. Damford Grounds, a low-lying area of fenland, lies to the north of the village, and Damford Drain, the main drainage ditch, is pumped into the river by a pumping station on the west bank. After passing Terry Booth Farm on the east bank, the 18th century buildings of which are Grade II listed, and a farm with the same name on the west bank, Lower Kyme lock is reached, 10.6 miles (17.1 km) from Sleaford. The Twenty Foot Drain and its pumping station join the river as it makes another sharp turn to the east, to reach a set of flood doors and Chapel Hill bridge, beyond which is the River Witham, flowing south-east to Boston.
