The Performance of Natural Flood Management at the Large Catchment-Scale: A Case Study in the Warwickshire Stour Valley
2.1. Study Site
2.2. Available Data
2.3. Model Build and Sensitivity Analysis
3.1. Model Sensitivity Analysis Findings
3.2. NFM Performance Summary: Lag-Times and Peak Attenutation
4.1. Relative Sub-Catchment Timings of Peaks
4.2. Peak Attenutation and Flood Mitigation
Data Availability Statement
Conflicts of Interest
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|Design Storms—Annual Exceedance Probabilities (AEPs)|
|1% + 35% *||1%||3.3%||QMED ** (50%)|
|Total rainfall (mm)||137.30||101.73||63.42||29.54|
|NFM Feature||Modelled Representation|
|Woodlands (including hedgerows) **||Increased floodplain roughness—0.15 n value|
|Online storage||Online storage unit *|
|Offline storage||Reservoir unit *|
|Leaky barriers||Increased channel roughness—0.15 n value|
|River and floodplain restoration||Reservoir unit *, alter digital terrain model (DTM) + channel network|
|Track drainage alteration **||Junction function in the 1D network to divert|
|Buffer strips||Increased floodplain roughness—0.075 n value|
|Soil aeration, winter crops and zero tillage||Increased floodplain roughness—0.050 n value|
|Swales, ponds, bunds and sediment traps **||Edit DTM for runoff attenuation features (RAF)|
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Lavers, T.; Charlesworth, S.M.; Lashford, C.; Warwick, F.; Fried, J. The Performance of Natural Flood Management at the Large Catchment-Scale: A Case Study in the Warwickshire Stour Valley. Water 2022, 14, 3836. https://doi.org/10.3390/w14233836
Lavers T, Charlesworth SM, Lashford C, Warwick F, Fried J. The Performance of Natural Flood Management at the Large Catchment-Scale: A Case Study in the Warwickshire Stour Valley. Water. 2022; 14(23):3836. https://doi.org/10.3390/w14233836Chicago/Turabian Style
Lavers, Tom, Susanne M. Charlesworth, Craig Lashford, Frank Warwick, and Jana Fried. 2022. "The Performance of Natural Flood Management at the Large Catchment-Scale: A Case Study in the Warwickshire Stour Valley" Water 14, no. 23: 3836. https://doi.org/10.3390/w14233836