Slick Rock also has a restroom building, a boat launch, and you can swim and fish. Id recommend bringing a pop up for shade. As of last weekend, they were not charging the $5 fee for parking.
Last time I went both swimming and fishing were allowed. As far as bathrooms, there were porta potties but I didn't see an actual bathroom. I believe flotation devices are strongly recommended because of the possibility of strong currents. Hope this helps.
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