Not permeable; not permitting passage, as of a fluid. through its substance; impervious; impenetrable; as, India rubber is impermeable to water and to air.
Characteristic of geologic materials that limit their ability to transmit significant quantities of water under the head differences normally found in the subsurface environment.
layer--a layer of solid material, such as rock or clay, which does not allow water to pass through. industrial water use--water used for industrial purposes in such industries as steel, chemical, paper, and petroleum refining. Nationally, water for industrial uses comes mainly (80%) from self-supplied sources, such as a local wells or withdrawal points in a river, but some water comes from public-supplied sources, such as the county/city water department.
Any formation that prohibits the passage of fluid or gas through it.
Incapable of permeating, absorbing, or diffusing water, thereby creating runoff.
Unable to permit water or roots to move through freely (see Impervious Surface).
Not capable of allowing a liquid to spread or flow through. Something that is impermeable will not absorb water, for example.
Rock or sediment that does not allow passage of water.
Resistant to flow of or penetration by water or other liquids.
Said of a rock, sediment, or soil that is incapable of transmitting fluids under pressure.
Can not be penetrated by liquids.
preventing the passage of fluid. A formation may be porous yet impermeable if there is an absence of connecting passages between the voids within it. See permeability.
A rock is impermeable if water cannot pass through it.
adj] Does not permit the passage of fluid through its pores or interstices.
Underground formations that do not allow water to percolate through them.
Not allowing water to pass through it. Because beds of clays and other fine sediments are nearly impermeable, they act as confining layers and impede the spread of contaminated groundwater.
a rock or unit in which water can not flow thorough
preventing especially liquids to pass or diffuse through; "impermeable stone"; "an impermeable layer of scum"; "a coat impermeable to rain"
material that fluids cannot pass through
A soil or rock layer which is impermeable does not permit water, or contaminants in the water, to pass through the layer.
Describes material or soil that does not allow, or allows only with great difficulty, the movement or passage of water. Compare permeable.
Not easily penetrated by water.
membrane or skin which allows no water or water vapor to pass through itself
not allowing passage of fluids.
Fluids cannot flow through rocks (clays, cemented sandstone or salt) where cracks and pore spaces are very small or are blocked by mineral growth.
Not capable of transmitting fluids or gases in appreciable quantities. Few rocks are completely impermeable; but some--such as unweathered granite, dense basalt, welded tuff, dense limestone, and well-cemented conglomerate--may be so considered for practical purposes.
not allowing movement or passage through a substance (The groundwater was unable to move through the impermeable clay layer. )
Not permeable; does not permit fluids to pass through.
Not easily penetrated, The property of a material or soil that does not allow, or allows only with great difficulty, the movement or passage of water.
material that does not permit fluids to pass through.
Refers to rock or unconsolidated sediment that does not permit water to flow into or through it
Not capable of spreading or diffusing through the openings or interstices of a medium.
having a texture that does not permit water to move through quickly
( Ped.). A soil which does not readily permit the passage of water through it.
A substance which does not allow water to pass through
The ability of a material or product to reduce or eliminate gaseous transmissions through it's mass; measured as the rate of Water Vapor Transmission (WVT). Note: Not all materials that are waterproof are vaporproof; all materials that are vaporproof are inherently waterproof.
A rock that will not let groundwater pass through it. Clay is a good example.
Unable to be penetrated, as by liquids. For example, an "impermeable membrane" can be a thin plastic sheet through which rainwater cannot move.
Having a texture that does not permit fluids to move through it freely.
does not allow liquids to pass through easily -- certain rock types and clay soil are impermeable.
Will not allow water to pass through it.
Resistant to penetration of moisture.
Does not permit the passage of fluids; impervious.
the ability of a material to prevent liquids from passing through it
Not permitting fluids to pass through it; cannot be penetrated.
Pertaining to a rock that is incapable of transmitting fluids because of low permeability. Shale has a high porosity, but its pores are small and disconnected, so it is relatively impermeable. Impermeable rocks are desirable sealing rocks or cap rocks for reservoirs because hydrocarbons cannot pass through them readily.
Cannot be penetrated by liquid or vapor. The state of a material that does not allow another substance to penetrate or pass through it.