online_engelund_hansen:  Calculation of sediment discharge by the Engelund-Hansen formula    Formulas: Ss = γs / γw θ = D So / [ (Ss - 1 ) d50 ] f = ( 2 g So D ) / V 2 qs = 0.1 (1/f ) θ5/2 γw [ (Ss - 1 ) g d503 ]1/2 Qs = B qs 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 So in m/m; mean diameter d50 in mm; Ss is dimensionless. U.S. Customary Units:   Hydraulic depth D in ft; channel width B in ft; mean velocity V in fps; bottom slope So in ft/ft; mean diameter d50 in mm; Ss is dimensionless. INPUT DATA: Select:    SI units (metric) U.S. Customary units Hydraulic depth D :         Channel width B :           Mean velocity V :            Bottom slope So :           Mean diameter d50 :       Specific gravity Ss :        [ Leave blank to choose default Ss = 2.68 ] OUTPUT: Sediment discharge (sec) qs :      Sediment discharge (sec) Qs :      Sediment discharge (days) qs :      Sediment discharge (days) Qs :      Press button to or recalculate   Your request was processed at  01:08:47 am on January 13th, 2026   [ 260113  01:08:47 ]. Thank you for running   online_engelund_hansen   Please call again.   [121029]