The river was the subject of controversy in January 2000 when around half of eligible local residents showed up to the polls and overwhelmingly voted against a proposed dam construction across the river, with 102,759 registering a "no" vote and only 9,367 giving a "yes" vote. This was considered unusual in a country where pork barrelpublic works projects were common and often welcomed by locals in provincial areas. Ironically, one author has argued that because of earlier local reforms which required a 50% turnout rate for referendums to pass through, pro-dam lobbyists likely urged "yes" supporters to not turn out to vote in the hopes that the total turnout would be less than 50% and thus invalidate the inevitable "no" vote. The entire episode led to a heated struggle between opposed locals and pro-dam lobbyists over the project. Reconstruction of the Yoshino Daiju Dam near its mouth provoked much controversy among environmentalists.