Average Velocity Calculator for Shallow Concentrated Flow

Average Velocity Calculator

Calculate the average velocity for shallow concentrated flow using Manning’s Equation:
\[ V = \frac{1}{n} R^{\frac{2}{3}} S^{\frac{1}{2}} \]

* Enter Manning’s roughness coefficient \(n\), hydraulic radius \(R\) (ft), and slope \(S\) (ft/ft).

Step 1: Enter Parameters

Manning’s Roughness Coefficient, \( n \):

Example: 0.015

Hydraulic Radius, \( R \) (ft):

Example: 2 ft

Slope, \( S \) (ft/ft):

Example: 0.01 ft/ft