Catchment-wide rain gardens and sustainable drainage to cut runoff at source
#00009
Install rain gardens, permeable surfaces and other sustainable drainage (SuDS) across the catchment to soak up rainfall where it lands, cutting peak runoff to overwhelmed drains. Most effective as a dispersed, upstream-weighted network.
Nashville, Tennessee, USA
PartialCumberland River Compact and Metro Nashville (green infrastructure programs)· City
Nashville has pursued green-infrastructure flood mitigation — depaving, tree planting, and rain gardens — as part of its response since the catastrophic 2010 flood. This case study is included specifically for its hones…
1 source
Community BlueScapes (Richmond Council, Barnes Common Ltd., WWT) with Barnes Community Association· 2025· Neighborhood
A purpose-built rain garden was installed beside the roundabout on Barnes High Street to reduce surface-water flood risk on paved urban areas. It absorbs excess water from storms and heavy rainfall, easing pressure on l…
Defra (via Community BlueScapes partnership)· 1 source