1. What is Ryve's Formula?

Ryve's Formula is an empirical equation used to estimate the peak rate of runoff from a catchment area, particularly developed for the Tamil Nadu region and in use in Tamil Nadu and parts of Karnataka and Andhra Pradesh.

2. How Does the Calculator Work?

The calculator uses Ryve's Formula:

Where:

• \( CR \) — Ryve's Coefficient
• \( Qr \) — Peak Rate of Runoff (m³/s)
• \( A_{km} \) — Catchment Area (km²)

Explanation: The formula calculates the coefficient that relates the peak runoff rate to the catchment area raised to the power of 2/3.

3. Importance of Ryve's Coefficient

Details: Ryve's Coefficient is crucial for hydrological studies and flood estimation in the specific regions where it applies, helping in designing drainage systems and flood control measures.

4. Using the Calculator

Tips: Enter the peak rate of runoff in cubic meters per second and the catchment area in square kilometers. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the typical range for Ryve's Coefficient?
A: The coefficient varies based on regional characteristics but generally falls within specific ranges determined by local hydrological studies.

Q2: Why is the exponent 2/3 used in the formula?
A: The 2/3 exponent empirically relates the catchment area to the peak runoff rate, accounting for the nonlinear relationship between area and discharge.

Q3: Can Ryve's Formula be used outside its original region?
A: While developed for specific regions, it may be applied elsewhere with caution and validation against local data.

Q4: What units should be used for inputs?
A: Peak runoff rate should be in cubic meters per second (m³/s) and catchment area in square kilometers (km²).

Q5: How accurate is Ryve's Formula?
A: Accuracy depends on the appropriateness for the region and the quality of input data; it is an empirical formula and should be used with understanding of its limitations.