A water tower is a pretty simple machine. Clean, treated water is pumped up into the tower, where it’s stored in a large tank that might hold a million or so gallons—enough water to run that particular city for a day. When the region needs water, water pumps utilize the pull of gravity to provide high water pressure. Because they work with gravity, they have to be taller than the buildings they’re providing water to in order to reach the highest floors. Each additional foot of height in a water tower increases water pressure by .43 pounds per square inch.
Image credit: Jonathan Cretton via Wikimedia Commons // Public Domain
Rowlet has almost six million gallons of storage available in four above-ground tanks (there is much more storage available in ground storage tanks).
Here is a video created to inform the public about the project as it was under construction in 2014. You can almost see the hiding spot for this geocache in the video.
The cache is a camo'ed pill bottle in the shadow of the tower (well, sometimes it is) and shouldn't be too hard to find. Please tuck it away so it doesn't stand out like a sore thumb when the next cacher comes looking for it.