He ran down the shores of the lakes, and followed their outlet to the 'city of cannon' There he hunted and fished, till the people chased him again through the woods into the arms of his enemies.
On one hand, the service spillway was in bad shape, and there was the possibility of the erosion progressing upstream toward the headworks which could result in an uncontrolled release of the reservoir.
So when all the drops are affected this way you naturally get a counterclockwise swirl just like a hurricane where the eye of the hurricane is the low pressure zone like a drain.
The cloud's components will become progressively spaghettified, drawn into a spiral, much like an object being pulled down a drain, but at speeds of up to 800 km per second.