Natural drainage definition

Natural drainage means a drainage consisting of native soils such as a natural swale or topographic depression which gathers or conveys run-off to a permanent or intermittent watercourse or waterbody.
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Natural drainage means those channels, swales, and other non-manmade water conveyances and holding systems.
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Natural drainage means channels formed by the existing surface topography prior to changes made by unnatural causes.
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Examples of Natural drainage in a sentence

  • Natural drainage patterns shall be maintained, and discharges from the project site shall occur at the natural location, to the maximum extent practicable.

  • Natural drainage areas must also be preserved to the maximum extent.

  • Natural drainage (D0) represents a situation with no subsurface drainage added; low drainage (D1) includes subsurface drainage; Medium drainage (D2) represents subsurface drainage plus a surface inlet, and high drainage (D3) represents subsurface drainage with multiple inlets.

  • Natural drainage areas shall be preserved to the maximum extent possible.

  • Natural drainage (onsite water infiltration) has been one of the major forms of drainage in this project area.

  • Natural drainage ways shall be preserved except for necessary road and utility crossings.

  • Natural drainage systems have been replaced with man-made sewer and stormwater infrastructure.

  • Natural drainage ways shall be preserved to the maximum extent possible.

  • Reviewing the baseline information and consideration of potential interactions between project (highway upgrades and operations), other linear infrastructure development and physical environment the following valued environmental components were identified: • Topography (bank slope stability and soil erosion) and Soil• Natural drainage and watershed management (flooding);• Water and Atmosphere (Air and noise pollution).

  • Natural drainage flow paths and SuDS, including opportunities for permeable surfacing and the incorporation of natural water management features, should inform site layouts of development proposals at the earliest opportunity.


More Definitions of Natural drainage

Natural drainage means channels formed in the existing surface topography of the earth prior to changes made by unnatural causes.
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Natural drainage means water which flows by gravity in channels formed by the surface
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Natural drainage means a natural swale or topographic depression which gathers and/or conveys runoff to a permanent or intermittent watercourse or waterbody.
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Natural drainage means the drainage basin without man-made alterations.
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Natural drainage means the water flow by gravity in channels formed by the true surface topography of the earth prior to changes made by the efforts of man.
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Related to Natural drainage

  • Stormwater Pollution Prevention Plan or "SWPPP" means a document that is prepared in accordance with good engineering practices and that identifies potential sources of pollutants that may reasonably be expected to affect the quality of stormwater discharges from the construction site, and otherwise meets the requirements of this Ordinance. In addition the document shall identify and require the implementation of control measures, and shall include, but not be limited to the inclusion of, or the incorporation by reference of, an approved erosion and sediment control plan, an approved stormwater management plan, and a pollution prevention plan.

  • Wetlands or “wetland” means an area that is inundated or saturated by surface water or ground water at a frequency and duration sufficient to support, and that under normal circumstances does support, a prevalence of vegetation typically adapted for life in saturated soil conditions, commonly known as hydrophytic vegetation.

  • Pollution prevention means any activity that through process changes, product reformulation or redesign, or substitution of less polluting raw materials, eliminates or reduces the release of air pollutants (including fugitive emissions) and other pollutants to the environment prior to recycling, treatment, or disposal; it does not mean recycling (other than certain “in-process recycling” practices), energy recovery, treatment, or disposal.

  • Stormwater means water resulting from precipitation (including rain and snow) that runs off the land’s surface, is transmitted to the subsurface, or is captured by separate storm sewers or other sewage or drainage facilities, or conveyed by snow removal equipment.

  • Sanitary waste means wastes comprising of used diapers, sanitary towels or napkins, tampons, condoms, incontinence sheets and any other similar waste;

  • Natural uranium means uranium with the naturally occurring distribution of uranium isotopes, which is approximately 0.711 weight percent uranium-235, and the remainder by weight essentially uranium-238.

  • Stormwater runoff means water flow on the surface of the ground or in storm sewers, resulting from precipitation.

  • Drainage area means a geographic area within which stormwater, sediments, or dissolved materials drain to a particular receiving waterbody or to a particular point along a receiving waterbody.