Water Filled Porosity advert image shown if present
Image shown for entry if relevant and present

The percentage of pore spaces within a soil that are filled with water.

  Water Table advert image shown if present
Image shown for entry if relevant and present

The level at which a soil is saturated. A soil with a high-water table means that the water within the soil may be near to the surface. This has implications for drainage requirements and also potential uses for the surface. An area with a low water table means that there is greater potential for improved drainage on a site, or at least to be able to remove rainfall water away more easily from a drained surface. A water table will vary throughout the year, typically being higher during the wetter winter months when rivers are more swollen and lower during drier summer months when rivers are le

Continue reading about this

  Watercourse advert image shown if present
Image shown for entry if relevant and present

An area of open or covered water, including features, such as drains, which allow water to move from one location to another. The Land Drainage Act (Section 72 (1)) describes a watercourse as including “all rivers and streams and all ditches, drains, cuts, culverts, dikes, sluices, sewers (other than public sewers within the meaning of the Water Industry Act 1991) and passages, through which water flows.”

  Waterlogged Soil advert image shown if present
Image shown for entry if relevant and present

Water is present on the turf surface and is unable to readily be removed from its location. The soil is said to be saturated and will typically have water present as puddles within depressions within the area. A sports pitch which is waterlogged is unsafe and unplayable. See Surface Ponding.

  Weathering advert image shown if present
Image shown for entry if relevant and present

The action of breaking down rocks and minerals into smaller particles. This is carried out by the processes of biological weathering, chemical weathering and physical weathering.

  Weathering Agent advert image shown if present
Image shown for entry if relevant and present

An action or substance which results in weathering.

  Zeolite advert image shown if present
Image shown for entry if relevant and present

A granular bulky material which can be applied as a top-dressing to a turfgrass surface to help reduce fertiliser nutrients being washed out of sandy soils. It can also be used as a partial substitute for sand within soil profiles to aid drainage and soil porosity. It is a hydrated alumino-silicate mineral formed from the interaction of lava and saltwater.

  Zone of Illuviation advert image shown if present
Image shown for entry if relevant and present

See B Horizon.