Flood Probability Calculator

This calculator estimates flood probability based on historical data, rainfall intensity, and geographical factors.

Input Parameters

Calculation Results

Calculation Formula

Flood Probability (P) = 1 - (e^(-λ * T))

Where:
λ = (Rainfall Intensity / 1000) * (1 / Elevation)
T = Historical Flood Data (years)
e = Euler's number (approx. 2.71828)

Result

Flood Probability Calculator Calculator Usage Guide

Learn how to use the Flood Probability Calculator and its working principles

How to Use the Calculator

  1. Enter the historical flood data in years (e.g., 10, 20, etc.).
  2. Input the average annual rainfall in millimeters (mm).
  3. Specify the average elevation of the area in meters.
  4. Select the land use type from the dropdown menu.
  5. Click the "Calculate" button to compute the flood probability.
  6. The calculator will display the flood probability and risk level.

Understanding the Results

The flood probability is calculated using a simplified formula that considers historical flood data, rainfall intensity, and geographical elevation. The risk level is categorized as Low, Medium, or High based on the calculated probability.

Formula Explanation

The formula used is: P = 1 - (e^(-λ * T))

Where:

  • P = Flood Probability
  • λ = (Rainfall Intensity / 1000) * (1 / Elevation)
  • T = Historical Flood Data (years)
  • e = Euler's number (approx. 2.71828)

Limitations

This calculator provides a simplified estimation of flood probability and should not be used for critical decision-making without consulting professional flood risk assessments. The model assumes uniform rainfall distribution and does not account for localized weather events or drainage system conditions.