Kerr Dam (owned by GRDA) which is the dam on Hudson is the one that sends water to Gibson. Robert S Kerr Dam( which is Owned by US Army Corps of Engineers) is located south of Sallisaw and it is on the Arkansas River. So the link you have posted is for all Corps of Engineers hydro-power generating plants. I would argue some stuff but can't due to the fact I work for the Corps of Engineers at Ft Gibson power plant and actually operate all 8 power plants for the Corps out of there. I am not allowed to discussion much else. Sorry guys.