Select Committee on Agriculture Sixth Report


Beach nourishment: soft engineering technique (q.v.) whereby sand eroded from beaches is replaced in order to increase their coastal defence capabilities
Coastal cell: a length of shoreline over which it is considered that movement of coarse sediment (sands, gravels) is self-contained
Coastal defence: a generic term which includes both coastal protection against erosion and flood defence
Coastal protection: defending a coast against erosion by the sea
Coastal zone: area landward and seaward of the shoreline which is considered to be affected by coastal processes
Crest height: the maximum height of a flood defence
Estuary: the tidal mouth of a river
Flood defence: defending a coastal or river hinterland against flooding
Flood plain: an area adjacent to a river channel which is flooded during exceptional storms and over which sediment is deposited
Gabions: openmesh wire baskets filled with rock which act as units in coastal defence structures
Global warming: the retention by gases of thermal energy, leading to an increase in atmospheric and oceanic temperature. More specifically, a theory assuming that rising global temperatures are a direct result of increases in carbon dioxide emissions from fossil fuel consumption, among other gases. This rise in temperature will cause thermal expansion of oceanic waters, which, coupled with melting of polar ice, will lead to sea level rise
Hard engineering: the use of rigid structures which ameliorate the effects of flooding or erosion by blocking or obstructing these processes
Intertidal zone: the area of the shore which lies between high and low tide marks
Managed realignment: a soft engineering (q.v.) technique which aims to retreat existing flood or coastal defences in order to provide wide areas of river flood plain or upper shoreline, thus reducing risks from flooding or erosion while conferring environmental benefits
Maritime local administrative authority with responsibility for coastal protection
authority in its area, as defined under the Coast Protection Act 1949
Natural processes deposition and erosion of sediment (muds, sands, gravels)
(coastal and river): which allow adjustment of coasts/rivers to changes in their environmental condition
Return period: return periods relate to the long term average time interval between events of a particular magnitude; thus a 1 in 100 year return period flood has a one per cent chance of occurring in any one year
River catchment: an area surrounding a river system into which all run-off (q.v.) ultimately feeds
Run-off: the portion of rainfall falling on a river catchment (q.v.) which feeds into the river system
Sea defence: sometimes used as an alternative to 'flood defence' when coastal flooding alone is considered
Soft engineering: amelioration of the effects of flooding or erosion using natural forms of defence, such as flood plains, salt marshes or beaches which adjust to environmental change
Storm surge: an increase in local sea level, in excess of normal tidal conditions, caused by meteorological conditions
Washlands: areas of flood plain (q.v.) which store water during storm events, thereby ameliorating the risk of flooding downstream

CMPCoastal Management Plan
DETRDepartment of the Environment, Transport and the Regions
EAEnvironment Agency
IDBInternal Drainage Board
LEAPLocal Environment Agency Plan
LFDCLocal Flood Defence Committee
MAFFMinistry of Agriculture, Fisheries and Food
PAGNProject Appraisal Guidance Note
PPGPlanning Policy Guidance
RFDCRegional Flood Defence Committee
RSGRevenue Support Grant
SCASupplementary Credit Approval
SMPShoreline Management Plan
SSAStandard Spending Assessment
WLMPWater Level Management Plan

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