Sustainable Drainage System Terms A-Z
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impermeable
Will not allow water to pass through it.
impermeable surface
An artificial non- porous surface that generates a surface water runoff after rainfall.
infiltration - to the ground
The passage of surface water though the surface of the ground.
infiltration - to a sewer
The entry of groundwater to a sewer.
infiltration basin
A dry basin designed to promote infiltration of surface water to the ground.
infiltration device
A device specifically designed to aid infiltration of surface water into the ground.
infiltration potential
The rate at which water flows through a soil (mm/h).
infiltration trench
A trench, usually filled with stone, designed to promote infiltration of surface water to the ground.
interflow
Shallow infiltration to the soil, from where it may infiltrate vertically to an aquifer, move horizontally to a watercourse or be stored and subsequently evaporated.
interim code of practice
An agreed provisional document within the existing legislative framework that establishes good practice. |
