Hydrology of Soil Types (HOST). A classification used to indicate the permeability of the soil and the percentage runoff from a particular area.
Hydrograph
July 2nd, 2011
A graph illustrating changes in the rate of flow from a catchment with time.
Highway drain
July 2nd, 2011
A conduit draining the highway. On a highways maintainable at the public expense it is vested in the highway authority.
Highway authority
July 2nd, 2011
A local authority with responsibility for the maintenance and drainage of highways maintainable at public expense.
Habitat
July 2nd, 2011
The area of environment where an organism or ecological community normally lives or occurs.
Greywater
July 2nd, 2011
Wastewater from sinks, baths, showers and domestic appliances this water before it reaches the sewer (or septic tank system).
Green roof
July 2nd, 2011
A roof with plants growing on its surface, which contributes to local biodiversity. The vegetated surface provides a degree of retention, attenuation and treatment of rainwater, and promotes evapotranspiration. (Sometimes referred to as an alternative roof).
Green Infrastructure
July 2nd, 2011
A strategically planned and delivered network of high quality green spaces and other environmental features (often including water features).
