Approximate - nearest available gauge. Use as general reference only.
Take-out - It's best to take out just after the falls on river left (a short, steep hike up to FallsRoad) because not far below this, the river plunges underground for the rest of its way into Baltimore Harbor. I have heard tell of two paddlers unintentionally passing into this tunnel of lightless horror and coming out alive in the Harbor, but the journey is definitely to be avoided by kayakers, canoeists, spelunkers, and probably even by the rats, gargantuan insects and morlocks that you'd likely encounter.