S
WDry dam
WErchong FloodwayA
WGreen Brook Flood Control Project
WJakarta Flood CanalB
WMedeu Dam
WMetropolitan Area Outer Underground Discharge ChannelC
WNapa River Flood Project
WNew DanubeD
WPassaic River Flood Tunnel
WPortage DiversionE
WRed River Floodway
WRivervale Inverted SiphonsF
WShellmouth Reservoir
WSMART Tunnel