Impoundment may refer to: Water control The result of a dam, creating a body of water A reservoir, formed by a dam Coal slurry impoundment, a specialized form of such a reservoir used for coal mining and processing Impounded dock, an enclosed ship dock that uses locks to impound water to a consistent depth within the dock area Impoundment rights, a German system of permits and taxes for damming rivers Other uses Impoundment of appropriated funds, the decision of a President of the United States not to spend money appropriated by Congress Vehicle impoundment See also Pound (disambiguation) Seize (disambiguation)