Putting in at Boiling Springs near the Boiling Springs Iron Furnace. There is a 3 foot weir below Boiling Springs that needs to be carried on the right.. There is a five foot Dam above PA Rt 74 that is also unrunnable and must be carried. A three foot weir at the Williams Grove amusement park can be run on far river left, after checking for debris in the drop. Carry or take-out above the four foot Dam just above Old Gettysburg Rd.