A new study has found that groundwater pumping is having a greater effect in changing levels in the Tucson Basin Aquifer than climate change.
The study found that in the last 30,000-years, groundwater recharge in the Tucson Basin has been pretty consistent.
But the researchers say water tables dropped by as much as 105-feet during dry periods since about the end of the last ice age. However, that is only half of the drop seen in the last 70 years due to groundwater depletion…