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Witham First 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 of 1762. They manage the land drainage of an area to the west of the River Witham, between Lincoln and Dogdyke, which includes the valley of the River Slea to above Sleaford. The district is divided into a number of compartments, as it is intersected by embanked rivers which cross the area, carrying water from the Car Dyke, which acts as a catchwater drain at the western boundary, to the Witham on its eastern edge. 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 Steam engines were gradually replaced by oil and diesel engines, and most have since been superseded by electric pumps.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 First District IDB maintains thirteen pumping stations and of drainage channels. ==Organisation== The River Witham passes through low-lying land in Lincolnshire, which is susceptible to flooding. In 1762, an Act of Parliament was passed, which created the Witham General Drainage Commissioners, and divided the area into six districts, each with responsibility for land drainage. These were called the Witham First, Second, Third, Fourth, Fifth and Sixth Districts. The First District covered an area of , bounded on the north and east by the river, and on the south and west by the Car Dyke, an ancient navigation channel. The Fifth District covered a much smaller area of between Billinghay Skirth and Kyme Eau, the lower part of the River Slea. It became part of the First District in 1953.〔 There were initially 23 Commissioners for the district, one elected by each of the eighteen parishes which formed the First District, and another five from parishes in the Fifth District. Each district also elected some of the 31 General Drainage Commissioners. Seven came from the First District and another two from the Fifth District. The remainder came from the other four similar bodies created by the original Act. The Land Drainage Act of 1930 made provision for the creation of Internal Drainage Boards. The Witham and Steepings Catchment Board, who were responsible for the rivers at the time, proposed the creation of the Witham First District IDB, which took effect from 8 January 1934. In 1951, the Board was restructured to include six extra members, when the Witham Fifth District IBD was abolished, and was effectively amalgamated with the First District. Its area of responsibility was extended in 1968, when parts of fourteen parishes and the Urban District of Sleaford came under its jurisdiction, and the board was again restructured on 7 July 1993, to include representatives from local Councils, as required by the Land Drainage Act of 1991.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Witham First District IDB」の詳細全文を読む スポンサード リンク
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