colebrook               Calculates the Darcy-Weisbach Friction Factor f
darcyweisbach           Solves the Darcy-Weisbach Equation for the
                        either head loss (hf), flow rate (Q), diameter
                        (D), or roughness height (ks).
manningc                Solves the Manning Equation for gravity flow in
                        a circular pipe
manningt                Solves the Manning Equation for water flow in
                        an open channel
moody                   Creates a Moody diagram with optional manually
                        added points
spec_energy_trap        Creates a specific energy diagram for a
                        trapezoidal channel
waterprops              Functions to calculate water properties:
                        density, dynamic and kinematic viscosity
xc_circle               Creates a cross-section plot for a partially
                        filled pipe
xc_trap                 Creates a cross-section plot for an open
                        channel
