Not Scott, and this has nothing to do with interference, but it is possible to "calculate" certain things using physical phenomenon like water levels. It's basically a variation of "analog computing".

https://en.wikipedia.org/wiki/Analog_computer

An analog computer or analogue computer is a form of computer that uses the continuously changeable aspects of physical phenomena such as electrical, mechanical, or hydraulic quantities to model the problem being solved

I don't think it has much to do with QC, but analog computing is interesting in its own right.