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Charbeneau, 2000. porosity. Figure 15.1 Types of Porous Media Freeze and Cherry, 1979. n = V V / V T = Vol Voids / Total Vol.

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Presentation on theme: "Charbeneau, 2000. porosity. Figure 15.1 Types of Porous Media Freeze and Cherry, 1979. n = V V / V T = Vol Voids / Total Vol."— Presentation transcript:

1 Charbeneau, porosity

2 Figure 15.1

3 Types of Porous Media Freeze and Cherry, n = V V / V T = Vol Voids / Total Vol

4 Bedient et al., 1999., Porosity - not good indicator of flow

5 Freeze and Cherry,  = pressure head z = elevation head h = total head Pressure and Elevation Heads - Field

6 Two Confined Aquifers with Different Heads Charbeneau, Groundwater will tend to flow from the top aquifer to the bottom aquifer. We can ’ t make any conclusion about horizontal head gradients from this picture.

7 Horizontal and Vertical Head Gradients Freeze and Cherry, 1979.

8

9 Other Aquifer Features

10 The Major Aquifers of Texas Carrizo-Wilcox Edwards Gulf Coast Ogallala

11 Recharge Natural Precipitation melting snow Infiltration by streams and lakes Artificial Recharge wells Water spread over land in pits, furrows, ditches Small dams in stream channels to detain and deflect water


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