What term describes the ability of rock to transmit water through joints and fissures?

What term describes the ability of rock to transmit water through joints and fissures?

• A. Porosity
• B. Infiltration capacity
• C. Discharge
• D. Permeability

Answer: (D)

Permeability is the rock property that governs how easily water can move through the material via pores, joints, and fractures. When openings like joints and fissures are well connected, water can flow through the rock readily, giving it high permeability. If these pathways are limited or poorly connected, flow is hindered and permeability is low. Porosity describes how much void space the rock has, not how easily water can move through it. Infiltration capacity is about surface water entering the ground, and discharge is the water leaving the system. So the term that best describes the rock’s ability to transmit water through joints and fissures is permeability.

Permeability is the rock property that governs how easily water can move through the material via pores, joints, and fractures. When openings like joints and fissures are well connected, water can flow through the rock readily, giving it high permeability. If these pathways are limited or poorly connected, flow is hindered and permeability is low. Porosity describes how much void space the rock has, not how easily water can move through it. Infiltration capacity is about surface water entering the ground, and discharge is the water leaving the system. So the term that best describes the rock’s ability to transmit water through joints and fissures is permeability.