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The Indian Removal Act of 1830:
Permeability
Permeability is a measure of the ability of a porous material (such as rock or soil) to allow fluids to pass through it.
Perched Water
Groundwater that sits above the main water table and generally is underlain by a layer or lens of impermeable rock that blocks the downward flow of groundwater.
Water Table
The level below which the ground is saturated with water, marking the boundary between the unsaturated zone above and the saturated zone below.
Groundwater
Water that occupies the pores and fractures in underground rock and soil, a critical source of freshwater for drinking, agriculture, and industry.
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