Sprinkler control units, that are designed to control water usage in residential and commercial above ground sprinkler systems, are disclosed herein. The sprinkler control units operate with any above-ground sprinkler system. They require reduced external power, and use the water flowing through the device to generate power. and are powered by the water flowing through the module. The modules are built with buried sensors that measure the ground saturation level, thus altering the water supply provided through the sprinkler system(s).