---
title: "Alameda Method"
canonical: "https://help.innovyze.com/space/infodrainage2021v1/16547884/Alameda%20Method"
format: markdown
---
### Parameters

**Flow Length** - The length of the Sheet flow path.

**Overland Velocity** - The overland velocity.

### Calculation

![image](media://ae7d810a-0910-48e8-b936-4d66ecad65c2)


where:

L  = Length of overland flow (m)

V = Overland velocity (m/s).

<span style="color: #707070">t</span> <sub>c </sub> <span style="color: #707070">= time of concentration (mins)</span>