Semi-pervious surface definition
Semi-pervious surface means a surface such as stone, rock, concrete or other materials which permits some vertical transmission of water.
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Related to Semi-pervious surface
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.
Impervious surface means a surface that has been covered with a layer of material so that it is highly resistant to infiltration by water.
Regulated impervious surface means any of the following, alone or in combination:
Impervious area means any surface that does not allow stormwater to infiltrate into the ground.
Underground tank means a device meeting the definition of tank whose entire surface area is totally below the surface of and covered by the ground.