| Witham Third District IDB | |
|---|---|
 Dogdyke pumping station still houses its original steam pumping engine of 1858 which has been restored to working order. The building is a Scheduled Monument. | |
  Witham Third District IDB Location within Lincolnshire | |
| OS grid reference | TF110694 |
| Shire county | |
| Region | |
| Country | England |
| Sovereign state | United Kingdom |
Witham Third District IDB is an English internal drainage board set up under the terms of the Land Drainage Act 1930. The Board inherited the responsibilities of the Witham General Drainage Commissioners, who were first constituted by an act of Parliament[which?] of 1762. They manage the land drainage of an area to the north and east of the River Witham, between Lincoln and Dogdyke, which includes the valley of the River Bain to above Hemingby, and the valleys of Barlings Eau and most of its tributaries, to the north east of Lincoln.
Most of the parishes were enclosed in the late 1700s, by separate acts of Parliament, and steam-powered drainage was introduced from the 1830s. Steam engines were gradually replaced by oil and diesel engines, and most have since been superseded by electric pumps. The Witham Third District IDB maintains seventeen pumping stations and 140 miles (230 km) of drainage channels.