You can ride the MTB along the weirs. But roots and a very, very narrow trail challenge the skills. I would say nothing for beginners and scaredies. You can slide down and land in the water at any time. Or it becomes a pain when you have to push. Then leave it better. If you want to challenge yourself, you have to drive this trail along the weirs.
Partly not so well-developed Wuhrweg on the valley dam, already a path, but with shrubbery and roots, mostly runs 10 m above a farm road, which is easier to drive for inexperienced.
The stream meanders through a rocky overgrown ditch along two different trails. Interesting that the water does not just run somewhere but flows through home straight.