Well, a colleague did the calculations, but the flow rate has been calculated from Jiang et al 1998 as a function of the acceleration of gravity, diam. of stone, depth, width and porosity of barrier and the resulting head.
Does that help?
Hi,
I'm modeling check dams with two outlets, an overflow weir and exfiltration. I have a method for calculating flow rates through the dam, but I'm not sure how to set up the exfiltration so that the model recognizes it as only passing through the vertical face of the dam. Is this possible...