WArch dam
WArch-gravity dam
WAvalanche control
WBarrage (dam)
WBeaver dam
WButtress dam
WCheck dam
WCofferdam
WDam (agricultural reservoir)
WDiversion dam
WDrop structure
WDry dam
WEmbankment dam
WGravity dam
WIce jam
WSplash dam
WSteel dam
WTailings dam
WWeir
WWing dam