The Splash Fountain can be enjoyed between the months of April and September but this cache is accessible all year round. To find this cache, you must count the number of colored circles at GZ. There are red, blue, yellow, and green circles at the Splash Fountain.
How many total circles are there? Now subtract 2 from the total and we'll call this number AA.
Add the number of red circles to the number of green circles. Multiply by 8 and add 2. This is BBB.
Plug in your variables for the final coordinates: N33 21.5AA W084 48.BBB
If this doesn't show up correctly on your mobile app, check the hint.