Ground water interaction study around the Roubidoux Spring watershead

This Groundwater report is an excellent study of the underground water movement in and around Roubidoux Spring. After reading this it is easier to realize why the far upstream Roubidoux gauge can tell you more about the spring flow conditions than the upstream Polk Road stream gauge which being 2 miles upstream  is not in the recharge area.    
Upstream Roubidoux stream gauge