Imperviousness definition

Imperviousness means and refers to the percentage of an area that is considered impervious per the USGS Geodatabase.
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Imperviousness means the degree to which land is impervious.
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Examples of Imperviousness in a sentence

  • Key components for interpretation of the model output include: ! Pollutant loading (annual, individual storm event) by subwatershed ! Imperviousness by subwatershed ! Flow frequency for tributaries ! In-stream water quality (annual, seasonal, and critical low flow) ! ▇▇▇▇▇▇ Reservoir water quality (mean summer chlorophyll-a) Model results will also be used to develop a Site Assessment System (SAS) to support evaluation of the development impacts on a small scale.

Related to Imperviousness

  • Impervious area means any surface that does not allow stormwater to infiltrate into the ground.

  • Impervious surface means a surface that has been covered with a layer of material so that it is highly resistant to infiltration by water.

  • Pervious means any surface or material that allows the passage of water through the material and into the underlying soil.

  • Intensity means the number of Program Unique Supervised Hours divided by the Duration for a course or qualification, being a measure of the concentration of training and assessment delivered from the Eligible Individual’s perspective.

  • Pervious surface means an area that releases as runoff a small portion of the precipitation that falls on it. Lawns, gardens, parks, forests or other similar vegetated areas are examples of surfaces that typically are pervious.