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Illustration 1 - pdf or
image only or larger
version
Hydrologic cycle, water is constantly on the move.
Illustration 2 - pdf or
image only or
larger version
Groundwater is the water that fills all the spaces in
the saturated zone.
Illustration 3 - pdf or
image only or
larger version
Aquifers can be composed of a variety of rock types
with different water-bearing properties.
Illustration 4 - pdf or
image only or larger
version
A confined aquifer is trapped beneath an impermeable
layer of clay or rock and is often under pressure.
Illustration 5 - pdf or
image only or larger
version
Groundwater generally flows from upland recharge
areas to lowland discharge areas.
Illustration 6 - pdf or
image only or larger
version
Groundwater moves in parallell paths or layers with
little mixing between layers.
Illustration 7 - pdf or
image only or larger
version
Pumping from a well lowers the water table near the
well creating a cone of depression.
Illustration 8 - pdf or
image only or large
image
Groundwater contamination may come from a variety of
sources.
Illustration 9 - pdf or
image only or larger
version
Animal manure is a common cause of groundwater contamination
by nitrates, bacteria, and viruses.
Illustration 10 - pdf
or image only or
larger version
Groundwater can be contaminated by various substances that
can be spilled while in transport as well as by deicing salts.
Illustration 11 - pdf
or image only or larger
version
The density of a contaminant determines whether it is a
“floater,” “mixer,” or “sinker”
and affects how quickly or easily it is
detected.
Illustration 12 - pdf
or image only or larger
version
Map of Pennsylvania's Aquifers
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