More on Green Reservoirs

1. How many Green Reservoirs for effective  SUDS to contain loss
   • As many as possible (more . . ); diffuse attenuation to reduce local impact (more . . .)
   • For rural  ‘Natural’  floods, Upper Severn evidence indicates that 10% reduction (of overbank flow by stage) would have a dramatic effect on loss and blight; 25RP-50RP floods are the problem (more . . . )
   • RAF  (Run-off Attenuation Feature) research is promising:  (more . . . )
2. Strategic Locations
   •  Wherever floodwater stands or flows (more . . . ).
   • Lateral impact from such temporary flood storage engineered for longer duration to avoid increased stage (more . . .  ).
   • Infrastructure crossings (more . . .  )
3. Incremental Attenuation  for Cumulative effect
   • Multiple porous features each creating a weir when terrain is inundated (more . . . ).
   • Every field in a floodplain is a potential green porous reservoir (more . . . )
4. Multiple Benefits
   • Hydraulic effect of frictional corridors (more  . . . . )
   • Pollution control by buffer-strip filtration (more . . . ):
     • Further current links: Nitrates, Prevention
   • Biodiversity within boundary friction corridors (more . . . )

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