After decades of legal battles between Florida, Georgia and Alabama over a river system they share, an environmental group on Tuesday warned that the Apalachicola-Chattahoochee-Flint Basin is “at the breaking point.” American Rivers —- which releases a yearly list of the country’s 10 most-endangered rivers —- named the Apalachicola-Chattahoochee-Flint system its number one for 2016. […]