HYDRO FA1

Infiltration equations can account for both transient and steady-state infiltration rates.

• True

• False

For accurate estimation of infiltration using Philip’s model, which of the following must be determined?

• Final infiltration rate

• Soil permeability constant

• Rainfall intensity

The presence of roots can increase infiltration capacity in soils.

• True

• False

The dynamic nature of infiltration rates means they are typically higher at the beginning of a rainfall event and gradually decrease over time.

• True

• False

The hydraulic conductivity of the soil is directly proportional to the permeability of the soil and affects its infiltration capacity.

• True

• False

In Kostyakov’s model, the final infiltration rate is typically achieved after:

• A few minutes of rainfall

• Several hours of sustained rainfall

• After the initial rapid infiltration phase

High levels of soil compaction reduce the infiltration rate.

• True

• False

Philip’s model is most accurate for soils with high permeability.

• True

• False

Infiltration rates are typically higher in soils with high organic content.

• True

• False

Infiltration can be greater in soils with surface mulches than those without.

• True

• False