Keeping Cool this Summer

I am on a mission to keep cool this summer with my 3 year old son. Since his energy level makes it impossible to stay inside sipping margaritas...we are in search of water!

First find: Squirt fountain at Headhouse Square (on 2nd, off Lombard)-This used to be a sunken area for teenagers to skateboard and hang out. It is now renovated into a cute little squirt fountain with benches around it. There are several "squirts" at different intervals surrounded by safe, rubberized ground material.
Pros: Small, Unknown, Clean
Cons: Surrounded by traffic, South St. bar scene.

Next Tip: Herron Sprayground (on Reed and 2nd Sts.)-I understand it to be part playground/part spray area. Will update when we get there!