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Impervious surface area definition

Impervious surface area means the number of square feet of horizontal surface covered by buildings, and other impervious surfaces. All building measurements shall be made between exterior faces of walls, foundations, columns or other means of support or enclosure.
Impervious surface area means any non-vertical surface artificially covered or hardened so as to prevent or impede the percolation of water into the soil mantle including, but not limited to, roof tops, swimming pools, paved or graveled roads and walkways or parking areas, and excluding landscaping and surface water retention/detention facilities.
Impervious surface area means the ground area covered or sheltered by an impervious surface, measured in plan view. For example, the "impervious surface area" for a pitched roof is equal to the ground area it shelters, rather than the surface area of the roof itself.

Examples of Impervious surface area in a sentence

  • Impervious surface area means any surface area that prevents infiltration of water into the soil.

  • Impervious surface area calculations are required per Section 8.014 of the Sauk County Shoreland Protection Ordinance.

  • Impervious surface area calculation (% of lot area) - Section 230-1 b.

  • Impervious surface area is the basis of the fee charged to property owners.

  • If so, a repair plan should be in place.2. Total area disturbed is greater than 5 acres and as such should follow guidelines laid out in New York State Standards and Specifications for Erosion and Sediment Control.3. Impervious surface area is calculated as 0.01 acres for use in stormwater calculations.


More Definitions of Impervious surface area

Impervious surface area as defined in Env-Wq 1402.15 means, for purposes of the impervious surface limitation specified in RSA 483-B:9, V(g), the sum total of the footprint of each impervious surface that is located within the protected shoreland.
Impervious surface area means the number of square feet of horizontal surface covered by buildings, and other impervious surface.
Impervious surface area means a surface which is compacted or covered with material that is highly resistant to infiltration by water, including, but not limited to, most conventionally surfaced streets, roofs, sidewalks, paved parking lots, and other similar structures.
Impervious surface area means A non-vegetated surface area which either prevents or retards the entry of water into the soil mantle as under natural conditions prior to development. A non-vegetated surface area which causes water to run off the surface in greater quantities or at an increased rate of flow from the flow present under natural conditions prior to development. Common impervious surfaces include, but are not limited to, roof tops, walkways, patios, driveways, parking lots or storage areas, concrete or asphalt paving, gravel roads, packed earthen materials, and oiled, macadam or other surfaces which similarly impede the natural infiltration of stormwater. Open, uncovered retention/detention facilities shall not be considered as impervious surfaces for the purposes of determining whether the thresholds for application of Minimum
Impervious surface area means a hard surface area that either prevents or retards the entry of water into the soil mantle as under natural conditions before development; or that causes water to run off the surface in greater quantities or at an increased rate of flow from the flow present under natural conditions prior to development. Common impervious surfaces include, but are not limited to, roofs, walkways, patios, driveways, parking lots, or storage areas, areas that are paved, graveled, or made of packed or oiled earthen materials or other surfaces that similarly impede the natural infiltration of surface and storm water. An open, uncovered flow control or water quality treatment facility shall not be considered as impervious surface.
Impervious surface area means the calculated area of a surface that is compacted or covered with material that is highly resistant to infiltration by water, including, but not limited to, most conventionally surfaced streets, structures, sidewalks, parking lots, gravel lots and driveways, and other similar surfaces.
Impervious surface area means any non-vertical surface artificially covered