1. What is Volume of Water Retained?

Volume of Water Retained in total volume of soil or rock sample is when the Soils can process and hold considerable amounts of water. It represents the amount of water that remains in the soil after drainage by gravity.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( V_r \) — Volume of water Retained (m³)
• \( V_t \) — Total Volume of Soil or Rock Sample (m³)
• \( \%S_r \) — Specific Retention (%)

Explanation: The formula calculates the volume of water that a soil or rock sample can retain after gravitational drainage, based on the specific retention percentage of the material.

3. Importance of Water Retention Calculation

Details: Calculating water retention capacity is crucial for understanding soil properties, groundwater recharge potential, agricultural irrigation planning, and environmental engineering projects.

4. Using the Calculator

Tips: Enter total volume in cubic meters and specific retention as a percentage. Both values must be valid (volume > 0, specific retention between 0-100%).

5. Frequently Asked Questions (FAQ)

Q1: What is Specific Retention?
A: Specific Retention (in %) tells how much water remains in the rock or soil after it is drained by gravity.

Q2: How does water retention affect soil properties?
A: Higher water retention capacity indicates better water-holding ability, which is important for plant growth and groundwater recharge.

Q3: What factors influence water retention in soils?
A: Soil texture, organic matter content, soil structure, and compaction all influence water retention capacity.

Q4: How is this measurement used in practice?
A: This calculation is used in agriculture, civil engineering, hydrogeology, and environmental studies to assess water storage capacity of soils and rocks.

Q5: What's the difference between specific retention and field capacity?
A: Specific retention refers to water retained after gravitational drainage, while field capacity includes both gravitational and capillary water.