Impervious layer definition

Impervious layer means any layer of material in the soil profile that has a percolation rate slower than 240 minutes per inch.
View Source
Impervious layer means a strata, such as a clay or shale, that does not permit water to move through perceptibly.
View Source
Impervious layer means any layer of material in the Soil Profile that has a
View Source

More Definitions of Impervious layer

Impervious layer means any layer of material in the Soil Profile that has a percolation rate slower than 120 minutes per inch (DEQ 4).
View Source

Related to Impervious layer

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

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

  • 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.

  • Regulated impervious surface means any of the following, alone or in combination:

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