 Present-day recharge of the aquifer with fresh water occurs at an exceedingly slow rate, suggesting that much of the water in its pore spaces is paleowater, dating back to the most recent ice age and probably earlier.Groundwater within the Ogallala generally flows from west to east at an average rate of a foot per day.Hydraulic conductivity, or the ability for a fluid (water) to move through porous material, ranges from per day.