Recharge From Rainfall In East Coast Alluvial Areas Calculator

Formula Used:

\[ \text{Recharge from Rainfall in Alluvial East Coast} = 16 \times \text{Area of Computation for Recharge} \times \text{Normal Rainfall in Monsoon Season} \] \[ R_{aec} = 16 \times A_{cr} \times P_{nm} \]

Recharge from Rainfall in Alluvial East Coast (R_aec):

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1. What is Recharge from Rainfall in Alluvial East Coast?

The Recharge from Rainfall in Alluvial East Coast refers to the process by which rainwater infiltrates through the soil and percolates down to replenish the groundwater stored in alluvial aquifers. This is particularly important in coastal alluvial regions where groundwater resources play a vital role in water supply.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ R_{aec} = 16 \times A_{cr} \times P_{nm} \]

Where:

\( R_{aec} \) — Recharge from Rainfall in Alluvial East Coast (m³/s)
\( A_{cr} \) — Area of Computation for Recharge (m²)
\( P_{nm} \) — Normal Rainfall in Monsoon Season (m)

Explanation: The formula calculates the groundwater recharge rate by multiplying the catchment area with the normal monsoon rainfall and applying a recharge coefficient of 16, which represents the specific recharge characteristics of alluvial east coast regions.

3. Importance of Groundwater Recharge Calculation

Details: Accurate groundwater recharge estimation is crucial for sustainable water resource management, especially in coastal alluvial areas where saltwater intrusion and over-extraction can threaten freshwater aquifers. Proper calculation helps in planning water conservation measures and maintaining ecological balance.

4. Using the Calculator

Tips: Enter the area of computation for recharge in square meters and normal rainfall in monsoon season in meters. Both values must be positive numbers. The calculator will provide the recharge rate in cubic meters per second.

5. Frequently Asked Questions (FAQ)

Q1: What is the significance of the coefficient 16 in the formula?
A: The coefficient 16 represents the specific recharge factor for alluvial east coast regions, accounting for soil permeability, infiltration rates, and other hydrogeological characteristics specific to these areas.

Q2: How is the Area of Computation for Recharge determined?
A: This area is typically the catchment area where rainfall contributes to groundwater recharge, determined through hydrological studies and watershed delineation.

Q3: What time period does "Normal Rainfall in Monsoon Season" cover?
A: It refers to the statistical average of rainfall measured over a specified period, typically 30 years, during the monsoon months in the specific east coast alluvial region.

Q4: Are there limitations to this calculation method?
A: This formula provides an estimate and may need adjustment based on local conditions, soil types, land use patterns, and specific hydrological characteristics of the area.

Q5: How accurate is this recharge estimation method?
A: While providing a good estimate for planning purposes, for precise groundwater management, additional field measurements and local hydrological studies are recommended.