Hello,

I am assuming that , you had sizes in Conduit Catalog when you had designed the project & now you have got changed ground levels.

Then,

1. In the physical alternatives > select conduit type as user defined so the it will take sizes which you…

Boundary condition means the fixed or known hydraulic grade in the system.
For the pump it defines the head to be added with the help of hydraulic grade of boundary condition element.
It could be tank, reservoir, valves which you already mentioned.

A tool like Darwin Calibrator is good for parameter adjustment once you determine WHY the model and the field data are not in agreement. You need to determine that first. There is no automated tool to do that.

As I've said many times, "The most valuable…