Porosity and Permeability in Groundwater
Porosity and permeability are important properties of underground materials that influence the movement and storage of groundwater.
Porosity refers to the percentage of empty space, or pores, in a rock or sediment. These pores hold water and determine how much water a material can store.
| Material | Porosity (%) |
|---|---|
| Gravel | High |
| Sand | Moderate |
| Clay | Low |
Permeability measures how easily water can flow through a material. It depends on the size and interconnectedness of the pores.
| Material | Permeability (cm/s) |
|---|---|
| Gravel | High |
| Sand | Moderate |
| Clay | Low |
Gravel has high porosity and permeability, allowing water to move quickly through it. Sand has moderate porosity and permeability, while clay has low porosity and permeability, making it difficult for water to flow through.
Groundwater Class 11 Geography Notes
Water is essential for life, and a big part of our water comes from the ground. People use groundwater for drinking, farming, and industry. It’s important to keep groundwater clean because it’s an important source of fresh water.
This article will help you learn about groundwater in detail, including its sources, recharge, and importance.
Groundwater