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  2. Catchwater drain - Wikipedia

    en.wikipedia.org/wiki/Catchwater_drain

    A catchwater drain is a land drain, a ditch cut across the fall of the land, typically just above the level of low-lying, level ground such as The Fens of eastern England, where some land, tens of kilometres from the sea is at about sea level. Its purpose is to gather water draining from the higher, sloping ground before it reaches the flat ...

  3. Catchwater - Wikipedia

    en.wikipedia.org/wiki/Catchwater

    Catchwater drains may take the form of concrete canals, such as in Hong Kong, where there are many.Alternatively, they may take the form of a large concrete sheet, smothering a hill, and preventing rainfall from entering the rock strata, with a smaller channeling system for transport of the water to the storage tank - this latter system is in operation in Gibraltar.

  4. Upper Witham IDB - Wikipedia

    en.wikipedia.org/wiki/Upper_Witham_IDB

    The Act enabled the North District to build a cast iron tunnel under the Fossdyke Navigation and a new drain to convey the water to the Main Drain of the South District. Additionally, they could build a catchwater drain along the edge of the higher ground to the east, which would discharge into the Fossdyke.

  5. Template:Upper Witham IDB map - Wikipedia

    en.wikipedia.org/wiki/Template:Upper_Witham_IDB_map

    Catchwater Drain Brayford Pool and R Witham: Main Drain Coulston Road PS Catchwater Drain + Syncil Dyke Boultham PS Hykeham PS River Brant:

  6. Retention basin - Wikipedia

    en.wikipedia.org/wiki/Retention_basin

    Storm water is typically channeled to a retention basin through a system of street and/or parking lot storm drains, and a network of drain channels or underground pipes.. The basins are designed to allow relatively large flows of water to enter, but discharges to receiving waters are limited by outlet structures that function only during very large storm eve

  7. Ditch - Wikipedia

    en.wikipedia.org/wiki/Ditch

    In the English Midlands and East Anglia, a dyke is what a ditch is in the south of England, a property-boundary marker or drainage channel. Where it carries a stream, it may be called a running dike as in Rippingale Running Dike, which leads water from the catchwater drain, Car Dyke, to the South Forty Foot Drain in Lincolnshire (TF1427).

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