Tipped triangular weir

Question

Can someone tell me what influence an angled wall has on the flow over a triangular weir compared to a "normal" vertical one if the wall is angled against the upstream as in the picture?

Answer 1

I would think that at high flow rates the flow over an angled weir would tend to push more water over the weir. At lower rates there would be no difference. I imagine you owuld need to determine this emperically if this were the only way to build your weir.