How long will it take for the Ogallala aquifer to recharge fill up naturally?

Unfortunately, it is impossible to accurately predict how long it will take for the Ogallala aquifer to recharge naturally. The recharge rate of the aquifer is highly dependent on the amount of precipitation in the region, which can vary significantly from year to year. Additionally, the rate of recharge is also affected by the amount of water that is being withdrawn from the aquifer for human use.