Stormwater Runoff Calculator
Estimate the peak runoff rate using the Rational Method:
\[
Q = 1.008 \times C \times I \times A
\]
where:
- \( C \) is the runoff coefficient,
- \( I \) is the rainfall intensity (in/hr), and
- \( A \) is the drainage area (acres).
* Enter values in SI units: coefficient (0–1), intensity (in/hr), and area (acres).
Step 1: Enter Parameters
Example: 0.5
Example: 2 in/hr
Example: 5 acres
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