Drainage district
Encyclopedia
Drainage districts occur in England
and Wales
, varying in size from a few hundred acres to over 100000 acres (404.7 km²), all in low lying areas of the country where flood risk management and land drainage are sensitive issues. Most drainage districts are administered by an internal drainage board
(IDB), which are single purpose local drainage authorities, dealing with the drainage
and water level management of clean water only.
Each drainage district has a defined area, and the IDB only has powers to deal with matters affecting that area.
Drainage districts were also used in Chicago
before the Tunnel and Reservoir Plan
created underground reservoirs to hold stormwater
.
England
England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...
and Wales
Wales
Wales is a country that is part of the United Kingdom and the island of Great Britain, bordered by England to its east and the Atlantic Ocean and Irish Sea to its west. It has a population of three million, and a total area of 20,779 km²...
, varying in size from a few hundred acres to over 100000 acres (404.7 km²), all in low lying areas of the country where flood risk management and land drainage are sensitive issues. Most drainage districts are administered by an internal drainage board
Internal Drainage Board
An internal drainage board is a type of operating authority which is established in areas of special drainage need in England and Wales with permissive powers to undertake work to secure clean water drainage and water level management within drainage districts...
(IDB), which are single purpose local drainage authorities, dealing with the drainage
Drainage
Drainage is the natural or artificial removal of surface and sub-surface water from an area. Many agricultural soils need drainage to improve production or to manage water supplies.-Early history:...
and water level management of clean water only.
Each drainage district has a defined area, and the IDB only has powers to deal with matters affecting that area.
Drainage districts were also used in Chicago
Chicago
Chicago is the largest city in the US state of Illinois. With nearly 2.7 million residents, it is the most populous city in the Midwestern United States and the third most populous in the US, after New York City and Los Angeles...
before the Tunnel and Reservoir Plan
Tunnel and Reservoir Plan
The Tunnel and Reservoir Plan is a large civil engineering project that aims to reduce flooding in the metropolitan Chicago area, and to reduce the harmful effects of flushing raw sewage into Lake Michigan by diverting storm water and sewage into temporary holding reservoirs...
created underground reservoirs to hold stormwater
Stormwater
Stormwater is water that originates during precipitation events. It may also be used to apply to water that originates with snowmelt that enters the stormwater system...
.