Severe rainfall causes a dam in the <a href="https://en.wikipedia.org/wiki/Black_Hills" id="mw6w" rel="mw:WikiLink" title="Black Hills">Black Hills</a> of <a href="https://en.wikipedia.org/wiki/South_Dakota" id="mw7A" rel="mw:WikiLink" title="South Dakota">South Dakota</a> to burst, creating <a href="https://en.wikipedia.org/wiki/1972_Black_Hills_flood" id="mw7Q" rel="mw:WikiLink" title="1972 Black Hills flood">a flood</a> that kills 238 people and causes $160<span id="mw7g" typeof="mw:Entity"> </span>million in damage.