At Fun Spot, there is a sidewalk up the hill to two slides. At the bottom, you plunge into a shallow pool. If you do not have a strong swimmer, bring your own life vest (or use one of the ones they have available).
Here you can pay about $10 for an hour or $20 for the whole day. Often there is a food truck where you can purchase food and drinks.
Click the address for the map: 2061 State Hwy 87, Port Bolivar, TX 77650