  In this paper, we seek an adequate macroscopic model for a hydraulic jump in
Bingham fluid. The formulas for conjugate depths, sequent bottom shear stress
and critical depth are established. Since no exact analytical solution in
closed form is available for conjugate depths, an approximate formula is
developed. This formula can provide good results with an error less than 4%.
The analytical results have revealed that the critical depth and the ratio of
conjugate depths increase until bottom shear stress exceeds a certain value and
then decrease afterwards. The bottom shear stress downstream of the jump is
smaller than that upstream. The results are verified by experimental data and
observations available in the literature.
