Hydraulic Gradient

Hydraulic gradient, abbreviated as i, a dimensionless number, is the change in height (pressure) to length between any two points.

 

hydraulic gradient formula

\(\large{ i = \frac{ Q }{ k \; A_c }   }\)

Where:

Units	English	Metric
\(\large{ i }\) = hydraulic gradient	\(\large{dimensionless}\)
\(\large{ A_c }\) = area cross-section	\(\large{ft^2}\)	\(\large{m^2}\)
\(\large{ Q }\) = flow rate	\(\large{\frac{ft^3}{sec}}\)	\(\large{\frac{m^3}{s}}\)
\(\large{ k }\) = hydraulic conductivity	\(\large{\frac{ft}{day}}\)	\(\large{\frac{m}{day}}\)

 

Related Hydraulic Gradient formula

\(\large{ i =  \frac{v}{k}   }\)

(Darcy velocity)

Where:

\(\large{ i }\) = hydraulic gradient

\(\large{ v }\) = Darcy velocity or flux