Calculation of sediment discharge by the Engelund-Hansen formula, Victor Miguel Ponce, Mitchel Jara Garcia, San Diego State University

    online_engelund_hansen: Calculation of sediment discharge by the Engelund-Hansen formula

Formulas:

S_s = γ_s / γ_w
θ = D S_o / [ (S_s - 1 ) d₅₀ ]
f = ( 2 g S_o D ) / V²
q_s = 0.1 (1/f ) θ^5/2 γ_w [ (S_s - 1 ) g d₅₀³ ]^1/2
Q_s = B q_s

Reference: SCS National Engineering Handbook, Section 3, Sedimentation, Chapter 4: Transmission of Sediment by Water.

SI Units (metric): Hydraulic depth D in m; channel width B in m; mean velocity V in m/s; bottom slope S_o in m/m; mean diameter d₅₀ in mm; S_s is dimensionless.
U.S. Customary Units: Hydraulic depth D in ft; channel width B in ft; mean velocity V in fps; bottom slope S_o in ft/ft; mean diameter d₅₀ in mm; S_s is dimensionless.

INPUT DATA:

Select:

Hydraulic depth D :

Channel width B :

Mean velocity V :

Bottom slope S_o :

Mean diameter d₅₀ :

Specific gravity S_s :

[ Leave blank to choose default S_s = 2.68 ]

OUTPUT:

Sediment discharge (sec) q_s :
Sediment discharge (sec) Q_s :

Sediment discharge (days) q_s :
Sediment discharge (days) Q_s :

Press button to

or recalculate

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