Crop circle 3.8 miles NE of Ingalls Kansas, with wheat surrounded by corn. Intensive use of the Ogalala Aquifer has caused water levels to drop and local farmers are limited in the amount of water they are allowed to pump. By making the plantings in a circle, water from one source can be efficiently allotted to different crops at different times of year to comply with water rationing. The landscape is rapidly becoming punctuated by windmills as the local power company offers landowners a share of revenue.