#WaveWatchingWednesday at a windy weir

In the featured image above, you see water shooting out from underneath the bridge; down from a slightly raised reservoir upstream, over the weir, towards the sea.

But the cool thing is that the other side of the bridge looks unexpectedly cool, too: Here, the strong land-inwards wind is creating a high surface roughness where it comes through the gaps underneath the bridge! At first glance, would you have guessed that the flow is left-to-right in the image below?