Dams by type

A weir on the Humber River near Cruikshank Park in Toronto, [[Ontario, Canada|thumb|right]] thumb|A weir on the Yass River, New South Wales, Australia, directly upstream from a shared pedestrian-bicycle river crossing thumb|right|A weir on the Tikkurilankoski rapids in Vantaa, Finland thumb|Time-lapse video of a new tilting weir being installed in the Caldicot and Wentloog Levels

type of dam that uses mass to counteract water pressure

thumb|A cofferdam on the Ohio River near Olmsted, Illinois, built for the purpose of constructing the Olmsted Locks and Dam|Olmsted Lock and Dam

solid dam made of concrete that is curved upstream in plan

large artificial dam

accumulation of ice on a river caused by ice break-up forming a barrier that in turn can cause floods

earth-fill embankment dam used to store byproducts of mining operations

type of dam

dam with the characteristics of both an arch dam and a gravity dam

small dam

dam constructed by beavers

dam that diverts all or a portion of the flow of a river from its natural course

dam with a solid, water-tight upstream side that is supported at intervals on the downstream side by a series of buttresses or supports

measures taken to protect against avalanches

dam used to raise the water level in streams to float logs downstream

natural dam produced directly or indirectly by volcanism