Types of Porous Media Freeze and Cherry, 1979. n = V V / V T = Vol Voids / Total Vol
Bedient et al., 1999., Porosity - not good indicator of flow
Freeze and Cherry, 1979. = pressure head z = elevation head h = total head Pressure and Elevation Heads - Field
Two Confined Aquifers with Different Heads Charbeneau, 2000. 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.
Horizontal and Vertical Head Gradients Freeze and Cherry, 1979.
The Major Aquifers of Texas Carrizo-Wilcox Edwards Gulf Coast Ogallala
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