Drainage subbasin definition

Drainage subbasin means a drainage area identified as a drainage subbasin in a city-approved basin plan or, if not identified, a drainage area that drains to a body of water that is named and mapped and contained within a drainage basin.

Examples of Drainage subbasin in a sentence

  • Drainage subbasin boundaries shall be maintained unless it is determined to be in the public interest to allow such change in established drainage patterns.

  • The Rational Method is a simple, conservative method for analyzing and sizing conveyance elements serving small drainage subbasins, subject to the following specific limitations:• Only for use in predicting peak flow rates for sizing conveyance elements• Drainage subbasin area A cannot exceed 10 acres for a single peak flow calculation• The time of concentration Tc must be computed using the method described below and cannot exceed 100 minutes.

Related to Drainage subbasin

  • Drainage system means one or more artificial ditches, tile drains or similar devices which collect surface runoff or groundwater and convey it to a point of discharge.

  • Sewage sludge means a solid, semi-solid, or liquid residue generated during the treatment of domestic sewage in a treatment works as defined in section 6111.01 of the Revised Code. "Sewage sludge" includes, but is not limited to, scum or solids removed in primary, secondary, or advanced wastewater treatment processes. "Sewage sludge" does not include ash generated during the firing of sewage sludge in a sewage sludge incinerator, grit and screenings generated during preliminary treatment of domestic sewage in a treatment works, animal manure, residue generated during treatment of animal manure, or domestic septage.

  • Drainage means the movement of water to a place of disposal, whether by way of the natural characteristics of the ground surface or by artificial means;

  • 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.

  • 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.

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

  • 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.

  • Water surface elevation means the height, in relation to the National Geodetic Vertical Datum (NGVD) of 1929, the North American Vertical Datum (NAVD) of 1988, or other datum, where specified, of floods of various magnitudes and frequencies in the floodplains of riverine areas.

  • Irrigation means application of water to land areas to supply the water needs of

  • drainage work means any watercourse and includes any land which is expected to provide flood storage capacity for any watercourse and any bank, wall, embankment or other structure, or any appliance, constructed or used for land drainage or flood defence;

  • Wastewater means the spent water of a community. From the standpoint of source, it may be a combination of the liquid and water-carried wastes from residences, commercial buildings, industrial plants, and institutions, together with any groundwater, surface water, and storm water that may be present.

  • Water Surface Elevation (WSE means the height, in relation to NAVD 1988, of floods of various magnitudes and frequencies in the floodplains of riverine areas.

  • Uppermost aquifer means the geologic formation nearest the natural ground surface that is an aquifer, as well as lower aquifers that are hydraulically interconnected with this aquifer within the facility's property boundary.

  • Surface water means all water which is open to the atmosphere and subject to surface runoff.

  • Sanitary landfill means a disposal facility for solid waste so located, designed and operated that it

  • water meter means any apparatus for measuring or showing the volume of water supplied to, or of effluent discharged from any premises;

  • Surface waters means all waters of the state as defined in G.S. 143-212 except underground waters

  • Sewage sludge weight means the weight of sewage sludge, in dry U.S. tons, including admixtures such as liming materials or bulking agents. Monitoring frequencies for sewage sludge parameters are based on the reported sludge weight generated in a calendar year (use the most recent calendar year data when the NPDES permit is up for renewal).

  • Potable means water suitable for drinking by the public.

  • Basement means any area of the building having its floor subgrade (below ground level) on all sides.

  • Water Main means (subject to Section 219(2) of the 1991 Act) any pipe, not being a pipe for the time being vested in a person other than the water undertaker, which is used or to be used by a water undertaker or licensed water supplier for the purpose of making a general supply of water available to customers or potential customers of the undertaker or supplier, as distinct from for the purpose of providing a supply to particular customers;

  • Stormwater management planning area means the geographic area for which a stormwater management planning agency is authorized to prepare stormwater management plans, or a specific portion of that area identified in a stormwater management plan prepared by that agency.

  • Water means the chemical element defined as H2O in any of its three natural states, liquid, solid and gaseous.

  • Curbside “Curb” means that portion of the right-of-way adjacent to paved or traveled roadways, including the end of a driveway, curb line or alley line. Containers will be placed as close to the roadway as practicable without interfering with or endangering the movement of vehicles or pedestrians.

  • Sewage means a combination of the water-carried wastes from residences, business buildings, institutions, and industrial establishments, together with such ground, surface, and storm waters as may be present.

  • Sanitary Sewer Overflow or “SSO” means an overflow, spill, diversion, or release of wastewater from or caused by Akron’s Sanitary Sewer System. This term shall include: 1) discharges to waters of the State or United States from Akron's Sanitary Sewer System; and 2) any release of wastewater from Akron's Sanitary Sewer System to public or private property that does not reach waters of the State or the United States, including Building/Property Backups.