Possible Recharge In Hard Rock Areas With Phyllites, Shales Given Recommended Specific Yield Calculator

Formula Used:

\[ R = (1.5 \times h \times A) - D_G \]

Water Level Fluctuation (h):

Meter

Watershed Area (A):

Square Meter

Gross Water Draft (D_G):

Cubic Meter per Second

Possible Recharge (R):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is the Possible Recharge Formula?

The Possible Recharge formula estimates the potential water recharge in hard rock areas with phyllites and shales, considering water level fluctuation, watershed area, and gross water draft. It provides a valuable assessment of groundwater replenishment capacity in these specific geological formations.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ R = (1.5 \times h \times A) - D_G \]

Where:

\( R \) — Possible Recharge (Cubic Meter per Second)
\( h \) — Water Level Fluctuation (Meter)
\( A \) — Watershed Area (Square Meter)
\( D_G \) — Gross Water Draft (Cubic Meter per Second)

Explanation: The formula accounts for the relationship between water level changes, catchment area, and water extraction to determine potential recharge capacity in phyllite and shale rock formations.

3. Importance of Possible Recharge Calculation

Details: Accurate recharge estimation is crucial for sustainable water resource management, groundwater planning, and determining the viability of water extraction projects in hard rock areas with phyllites and shales.

4. Using the Calculator

Tips: Enter water level fluctuation in meters, watershed area in square meters, and gross water draft in cubic meters per second. All values must be valid positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why is the coefficient 1.5 used in the formula?
A: The coefficient 1.5 represents the recommended specific yield factor for hard rock areas with phyllites and shales, accounting for the storage properties of these geological formations.

Q2: What are typical values for water level fluctuation?
A: Water level fluctuation typically ranges from 2-10 meters in hard rock areas, depending on seasonal variations and local hydrological conditions.

Q3: How does watershed area affect recharge potential?
A: Larger watershed areas generally contribute to higher potential recharge as they capture more rainfall and surface water for groundwater replenishment.

Q4: What limitations does this formula have?
A: The formula provides an estimate and may not account for all local geological variations, climate factors, or human activities affecting groundwater recharge.

Q5: How accurate is this calculation for water resource planning?
A: While useful for preliminary assessment, detailed hydrological studies and field measurements are recommended for critical water resource planning decisions.