As you pull into Katherines, just pass the pay booth there will be a road to your RIGHT, take that. It's between the upper and lower parking lots. If you hit the lower lot, you went to far. There is sign too. The turnoff for Telephone is MAYBE a mile in. It's paved until you turn to head towards Telephone. I believe there is a sign there as well. You can see the water at that point. Careful of the dirt launch. Watch a few peeps to find the sweet spot.