 Enacted in 1973, the Metropolitan River Protection Act initially covered a 48-mile corridor between Buford Dam (on the north) and Peachtree Creek, to the south.In 1998, the Act was amended to extend the corridor an additional 36 miles to the downstream limits of Fulton and Douglas Counties.The Act requires the Atlanta Regional Commission (ARC) to adopt a plan to protect the Chattahoochee River corridor and to review development proposals for consistency with the plan.