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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