1. What is Depth of Water in Well?

Depth of Water in the well is measured above the impermeable layer. It represents the actual water column height in the well after accounting for drawdown effects.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( h_w \) — Depth of Water (m)
• \( H \) — Thickness of Unconfined Aquifer (m)
• \( s_t \) — Total Drawdown in Well (m)

Explanation: This formula calculates the remaining water depth in a well by subtracting the total drawdown from the original aquifer thickness.

3. Importance of Depth of Water Calculation

Details: Accurate calculation of water depth is crucial for well design, pump placement, groundwater monitoring, and assessing aquifer performance during pumping tests.

4. Using the Calculator

Tips: Enter aquifer thickness and total drawdown values in meters. Both values must be positive, and drawdown cannot exceed aquifer thickness.

5. Frequently Asked Questions (FAQ)

Q1: What is unconfined aquifer thickness?
A: Thickness of Unconfined Aquifer is measured from impermeable layer to the initial level of water table before any pumping occurs.

Q2: What causes drawdown in wells?
A: Drawdown is caused by pumping water from the well, which creates a cone of depression and lowers the water level in and around the well.

Q3: How is total drawdown measured?
A: Total drawdown is typically measured using pressure transducers or manual water level measurements during pumping tests.

Q4: Can drawdown exceed aquifer thickness?
A: No, drawdown cannot exceed the original aquifer thickness as that would imply complete dewatering of the aquifer at the well location.

Q5: Why is this calculation important for well design?
A: Knowing the depth of water helps determine appropriate pump placement and ensures pumps remain submerged during operation.