GEOL0055 Groundwater Quiz PDF

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Summary

Quiz review for Groundwater
Includes examples of aquifer types + equations

Dr.Jones, Fall 2018...

Description

Groundwater Quiz Review Guide ●

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3 Types of Aquifer + Water Flow Within Type of aquifer

How groundwater flows in it

Unconfined Homogeneous

Flows in the direction defined by contours defining the top of the water table Water flows downhill, perpendicular to contour lines

Confined

Water flows from higher elevation recharge areas to lower elevation discharge areas Artesian wells/springs !

Carbonate

Groundwater flows through cave systems → harder to predict the rate and direction of the flow Water generally flows downhill (defined by top of water table), BUT detail fracture systems can cause water to flow at funny angles to water table topography Rate of flow depends on how open cave is, how full the cave is with water, and the slope

Other info

Leave their mark at the surface in the form of karst topography: sinkholes, disappearing streams, etc. Lakes often form in sinkholes; elevation of water in these lakes can be used to map the top of a water table

Equations ○ Distance = rate x time ○ Darcy’s law: (K/P)(h/l), where K = hydraulic conductivity, P = effective porosity, h = head, and l = horizontal distance over which groundwater flows ○ Hydraulic gradient = h/l...