To be synthetic, I would say that a dambreak wave knows a significant attenuation even on short distance, due to the steepness of the hydrograph: the "flow after a rupture" can only be locally defined, in a single section.
Thus to evaluate the highest(s) water elevation(s), you...
Hello,
That seems to be what you need indeed, with A=section of your outlet pipe and H= 3.5feet minus 6inches minus pipe's diameter.
the constants may be different from what I know (working with meters).
Junction headloss: Ke#1/m2 with m flow coefficent gibfrog was talking about, m equals...
