Ground-water development in East St. Louis area, Illinois. Urbana, IL ...

Table 35. Potential Yield of Aquifer with
a Selected Scheme of Development
Pumpage with selected
scheme of development
Pumping center
(mgd)
Alton area
1 16.0
2 7.0
Wood River area
1 20.0
2 7.2
3 7.0
Mitchell area 18.0
Granite City area 15.0
National City area
1 18.0
2 5.0
3 7.5
Monsanto area
1 23.0
2 11.0
Dupo area 19.0
Poag 2.0
Glen Carbon 1.0
Troy 1.0
Caseyville 4.0
Fairmont City 6.0
Total 187.7
in figure 69 areas of diversion with the selected scheme
of development cover most of the East St. Louis area.
Recharge directly from precipitation and subsurface
flow through bluffs is therefore nearly at a maximum.
Additional pumpage will have to be balanced with recharge
mostly from induced infiltration of surface water.
This can best be accomplished by developing additional
well fields near the Mississippi River.
Average head losses beneath the Mississippi River
bed and river-bed areas of induced infiltration, associated
with pumpage in 1962 and with the selected scheme of
development, were estimated based on infiltration rates
and aquifer-test data. Average head losses are much less
than the estimated depths of the Mississippi River given
in figure 57, and river-bed areas of induced infiltration are
small in comparison to the river-bed area in the East St.
Louis area, indicating that recharge from the induced infiltration
of surface water with the selected scheme of
development is much less than the maximum possible induced
infiltration.
Figure 68.
Approximate elevation of pieiometric surface
with a selected scheme of development
Figure 69.
Areas of diversion with selected
scheme of development
61