Free of water under dry weather flow conditions.
Diffuse pollution
July 2nd, 2011
Pollution that comes from non-point source contamination in urban and rural land-use activities spread out across a catchment or sub-catchment. Examples of true non-point sources are sheet run off from fields or seepage of nutrients from soil into ground water. Examples of minor point sources are field drains or surface water drains in urban areas. […]
Detention pond/tank
July 2nd, 2011
A pond or tank that has a lower outflow than inflow. Often used to prevent flooding.
Detention basin
July 2nd, 2011
A vegetated depression, normally dry except after storm events. It is constructed to store water temporarily to attenuate flows. It may allow infiltration of water to the ground and permits settlement of coarse solids. Outlets are normally designed to empty over a 24-hour period and the maximum depth of water should not exceed 3m, only […]
Designing for exceedance
July 2nd, 2011
An approach that aims to manage exceedance flows during rainfall events such as using car parks during extreme events.
Design Statement
July 2nd, 2011
In the context of a planning application, a written statement to a local authority prepared by an applicant setting out the design principles adopted in relation to a proposed design for a site and its wider context.
Design criteria
July 2nd, 2011
A set of standards agreed by the developer, planners and regulators that the proposed system should satisfy.
Design Codes
July 2nd, 2011
A set of standards agreed by the developer, planners and regulators tha the proposed system should satisfy.
Design and access statement
July 2nd, 2011
Formal documents explaining the design philosophy behind a planning application.
