Here is a link to historic pictures when they built the damn.
As you can see the areas that are eroding, don't seem to have been re-informed, so they could basically result in an new channel right around the existing damn.
That's the rub,....lose 30', and that whole schitaree below's likely to go away, too.
GTC
Member, Clan of the Border Rats -- “Sometimes I wonder whether the world is being run by smart people who are putting us on or by imbeciles who really mean it.”- Mark Twain