27.5.3. Green-Ampt Model

Try these first

1. 1.

   What is the Green-Ampt model used for?

   Hint

   Think about water movement in soil.

2. 2.

   What does K represent in the Green-Ampt equation?

   Hint

   Consider how water flows through soil.

3. 3.

   What does the letter 'K' stand for in the Green-Ampt equation?

   • A) Kinetic energy
   • B) Hydraulic conductivity
   • C) K value in soil texture

   Hint

   It describes how readily water can pass through the soil.

4. 4.

   True or False: The wetting front suction head (Ψ) has no impact on water movement in soil.

   • True
   • False

   Hint

   Remember the definitions of the parameters in the Green-Ampt model.

5. 5.

   Assume a soil has varying hydraulic properties across a landscape. Develop an infiltration strategy using the Green-Ampt model while accounting for different textures.

   Hint

   Consider how to categorize different soil types and their respective infiltration rates.

6. 6.

   A field experiment reveals that an area initially absorbs water at a rate of 15 cm/hr but decreases to 5 cm/hr. Using the Green-Ampt model, analyze how the initial suction head changes over time considering moisture content.

   Hint

   Pay attention to how moisture levels affect suction head in the model.