When I stood standing looking at this weir I could hardly hear Paul talk, the sound of rushing water was so overpowering. It had rained a lot and the river was flowing very fast and water was finding all sorts of places where it could fall to the next level.
Weirs regulate water flow, they help avoid flooding. They are another metaphor I use when thinking about self care. What are those things, people, places that can function as a weir for me, regulating the pressure and enabling release.