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 areas must also be preserved to the maximum extent.

  • Natural drainage landscapes (such as rain gardens, bio-infiltration swales and bioretention planters) are allowed when designed in compliance with the stormwater design manual adopted in KMC 15.52.060.

  • 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 shall be preserved to the maximum extent possible.

  • Excavate Borrow sources and Aggregate sources, except for those in streams and rivers, to provide: Reasonably uniform depths and widths; Natural drainage so no water stands or collects in excavated areas, when practicable; Slopes trimmed to blend with the adjacent terrain upon completion of operations; Slopes covered with native Soil, or acceptable plant rejects to support plant growth, if required by Specifications, Plans, or permits; and A vegetative cover that blends with the adjacent natural growth.

  • Natural drainage ways shall be preserved and accommodated at necessary crossings to access subdivision lots.

  • In addition to the slope stability analysis the alignment should be such that (i) Steep as well as heavy cuts are avoided, (ii) Flora and fauna of the area are disturbed to a minimum possible extent and (iii) Natural drainage pattern is not obstructed.

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

  • Natural drainage patterns and any other drainage features (including any spring or groundwater seepage).

  • Natural drainage patterns in the project area will not be impacted by the construction activities as no diversion of canal or waterways will be made during the implementation of project activities.


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 water body.
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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

  • Mine drainage means any drainage, and any water pumped or siphoned, from an active mining area or a post-mining area. The abbreviation “ml/l” means milliliters per liter.

  • Sanitary landfill means an engineered land burial facility for the disposal of household waste that is so located, designed, constructed, and operated to contain and isolate the waste so that it does not pose a substantial present or potential hazard to human health or the environment. A sanitary landfill also may receive other types of solid wastes, such as commercial solid waste, nonhazardous sludge, hazardous waste from conditionally exempt small quantity generators, construction, demolition, or debris waste and nonhazardous industrial solid waste. See 9VAC20-81 (Solid Waste Management Regulations) for further definitions of these terms.

  • 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.

  • Wetland or "wetlands" means areas that are inundated or saturated by surface water or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions. Wetlands generally include swamps, marshes, bogs, and similar areas. Wetlands do not include those artificial wetlands intentionally created from nonwetland sites, including, but not limited to, irrigation and drainage ditches, grass-lined swales, canals, detention facilities, wastewater treatment facilities, farm ponds, and landscape amenities, or those wetlands created after July 1, 1990, that were unintentionally created as a result of the construction of a road, street, or highway. Wetlands may include those artificial wetlands intentionally created from nonwetland areas created to mitigate conversion of wetlands.

  • Wildlife habitat means a surface water of the state used by plants and animals not considered as pathogens, vectors for pathogens or intermediate hosts for pathogens for humans or domesticated livestock and plants.

  • 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.

  • 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.