Walnut Grove Dam
... that rather than warning those downriver of the impending failure of the Walnut Grove Dam, a messenger got drunk, leading to the deaths of more than 100 people?
... that rather than warning those downriver of the impending failure of the <b id="mwBQc"><a href="./Walnut_Grove_Dam" id="mwBQg" rel="mw:WikiLink" title="Walnut Grove Dam">Walnut Grove Dam</a></b>, a messenger got drunk, leading to the deaths of more than 100 people?