The Colrado River on the Cali side. There is a security gate to feel safe. The park CSR's are so helpful and pleasant. Heidi is really sweet and she's a rock hound😁 There's spots to reserve and you can rent RV"s there too. They don't rent water toys. Everyone brings them. The kids ride around the park on their golf carts adults too. We saw some really cool ones like big truck, jeeps. There's no tenting or anything😁There is quite a bit of action going on around the park.