Glossary & Keywords

Keywords (in the context of this approach):

• ATREPO: Attenuation Research Network
• Flooding: Fluvial inundation of natural storage floodplains
• Exceedance: Stage levels above those on which communities have come to rely
• Attenuation: By communal FRM rather than private resilience
• Wellbeing:  Enhanced when not under threat
• 2D modeling: Relatively objective/generic rather than subjective predictive tool
• Multiple Benefit: in this context, the addition of hydraulic benefit to those of biodiversity and pollution
  
• Riparian: Along watercourses.  Law relating to both water quality and quantity
• Sustainable: in respect of climate-change for communities at risk
• Biomass: Energy from agriculture
• Communication: so that upstream landowners/managers understand the benefits and consequencies of their actions
• Transparent: broad straightforward well communicated approach
•  Local: non central
• 3m pollution strips; agricultural buffer strips such as Glastir
• biodiversity; good for all populations
• wellbeing; good for human population
• WFD: Water Framework Directive: in this context, WFD quality driving quantity control

Abbreviations

Word	Description
1D	One dimensional
2D	Two dimensional
Argae	Welsh language earthen embankment or levee
ascii	American Standard Code for Information Interchange
Biomass	Sustainable energy-product of land-use
Breaklines	GIS vector lines linking groups of GIS points often in relation to natural terrain features
Broad-hedge-weir	A wide (3m – 5m ) robust hedge which is porous but which holds floodwater back and creates a shallow weir
Buffer	An area surrounding a terrain feature described spatially, in this study, by points
CAP	Common Agricultural Policy
CFD	Computational Fluid Dynamics
CFD-mesh	A set of CFD elements (often triangular or rectangular) describing a surface spatially
CPU	Central Processing Unit
Cross-compliance	Agricultural requirements relating to payments under CAP
CRUEA	ClimateResearchUnitEast AngliaUniversity
cumecs	Cubic metres per second
Discretization	The process of segmenting a model
Distributed	Applying to a model discretized into elements
DTM or DEM or Bed	Digital Terrain or Elevaton Model; a digital representation of the Earth’s surface excluding features such as trees, buildings, etc
DWPA	Diffuse Water Pollution from Agriculture
Exceedance	Flow in excess of capacity
FEH	Flood Estimation Handbook (and software)
FF	Flood Frequency
Foreign-water	Water draining to a zone from without
FRM	Flood Risk Management
GIS	Graphical Information System
Glastir	A whole farm sustainable land management scheme available to farmers and land managers acrossWales.
Globalmapper	Low cost proprietary GIS software developed and distributed by Global Mapper Software LLC,Colorado,80138,USA
GPU	Graphics Processing Unit
Ground-truthing	Calibration of remotely sensed data by land survey
GUI	Graphical User Interface
Hard/soft assets	FRM structures; embankments are ‘hard’; hedges are ‘soft’
Hecras	HydraulicEngineeringCentreRiverAnalysis System
Himan	Project terminology for high Manning’s n terrain
HN	Hydrodynamic numerical
IDB	Internal Drainage Boards administering the Land Drainage Act, 1930
IGES	Institute of Geography and Earth Science,AberystwythUniversity
IPCC	Intergovernmental Panel on Climate Change
ISIS	Proprietary UK River Modelling software by Halcrow Group Ltd
Land-use	Specific to hydraulic characteristics
Lateral structures	Features which cross the floodplain
LBPG	Project terminology for Longitudinal Bankside Porous Levee with Gaps (to control connection between main channel and its floodplain)
LBPL	Project terminology for Longitudinal Bankside Porous Levee
LDA	Land Drainage Act, 1930
Lidar	Light Detection and Ranging
LLFA	Local Lead Flood Authority as described by the Flood and Water Bill 2010
Loman	Project terminology for low Manning’s n terrain
Manning’s n	Coefficient describing hydraulic roughness. An increase in n value causes a decrease in the velocity of water flowing across a surface
NFF	National Flood Forum
Overbank	Discharge which exceeds the capacity of the conveyance (river) channel
PC	Personal Computer
PIDB	Powysland Internal Drainage Board
Piedmont	The transition zone between plains and low relief hills
Point-cloud	A set of vertices in a three-dimensional coordinate system
Productive	Generating benefit, speed of analysis or speed of communication
Rating curve	Stage — discharge relationship (curve) eg at a gauge station or model boundary
Resilience	Indicative of vulnerabilty to flood loss
RP	Return Period in years of a flood event indicating its risk
SD	European Union Soil Framework Directive 2006
stage	Water surface elevation
Stakeholder	An interested party
Steady-state	Non-varying parameter (eg hydraulic flow)
Streaming	Data output in real-time
SUDS	Sustainable Drainage System
Terrain	Bare-earth ground surface including embankments but generally devoid of soft and built features
TIN	Triangular Irregular Network
Transient	Time-varying parameter (eg transient, unsteady, hydraulic flow)
TUFLOW	Proprietary river modelling software
UK-ABI	United Kingdom- Association of British Insurers
UK-Defra	United Kingdom- Department of the Environment, Food and Rural Affairs
UK-EA	United Kingdom- Environment Agency (UK-EA-FRM is flood risk management)
UK-GOV	United Kingdom- Central Government
UK-SEPA	United Kingdom- Scottish Environmental Protection Agency
UK-SGOV	United Kingdom- Scottish Government
UK-WAG	United Kingdom- Welsh Area Government
Weir equation	Stage — discharge relationship (equation) eg at a gauge station or model boundary
WFD	Water Framework Directive, 2000, adopted intoUKlaw 2003
WRA	Water Resources Act, 1991

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