Question

Saturated hydraulic conductivity in situ is measured by

• A. Guelph permeameter
• B. Neutron probe
• C. Infiltrometer
• D. Piezometer

Hint:

Guelph permeameter is ideal for field-based saturated hydraulic conductivity measurement.

Answer 1

The Correct Option is A

Step 1: Neutron probe reads soil moisture content, not conductivity.
Step 2: Infiltrometer and piezometer measure infiltration rate and water table head respectively, not saturated K in situ.
Step 3: Guelph permeameter maintains a constant head in a borehole and derives K directly via Darcy's law.
Correct option: Guelph permeameter.