Hydraulic Gradient Equation

Output: Press calculate

Formula:i = (h1 - h2) / L

Introduction to Hydraulic Gradient Equation

The hydraulic gradient equation is used to calculate the slope of a hydraulic head over a defined distance. In this formula, i represents the hydraulic gradient, h1 and h2 are the respective elevation heads at each end of the distance, and L represents the distance along the flow path. The result is generally expressed in meters per meter (m/m) or other length by length units.

Parameter Usage:


Data Validation

The elevation heads and distance should be non-negative numbers. Additionally, the distance should not be zero.


This calculator takes into account the elevation heads at both ends of a flow path and the distance between them to calculate the hydraulic gradient, which is a measure of the slope of the hydraulic head.

Tags: Hydraulics, Gradient, Elevation, Head