In 1884, when wells first began discharging water from the Arapahoe aquifer, the water was used primarily for irrigation. The population was small, livestock was not much of a factor, and large industries didn't exist.
As the population changed, however, so did water use
patterns. Agricultural and industrial users still get
much of their water from the aquifer, but more of the
water for public use now comes from surface water, which
is stored in reservoirs.
! Examine the graph of estimated groundwater use.