Extreme water level at start up.

Hi
I get a start water level that has nothing to do with external water levels in at model. This cause a startup volume of millions of m3 and a model that is rather useless. Has anyone experienced this before and found any solution?

Regards
// Alf 

Hi,

We have experienced something similar.

When adding an external water level to one outlet in a model the remaining outlets will have a starting condition where an "imaginary" external water level is set to the invert level of the outlet. We had a case with an emergency outlet which essentially is in a backward slope towards the network. When starting our calculations and we had an external water level enabled in another part of the system the whole model was filled with water due to that the "imaginary" water level at the emergency outlet made water flow into the system and fill it. Maybe you can check if the water level you initially get in the system can be linked to any outlet with a backward slope into the system. We used a weir to describe the emergency outlet instead and the problem is reported.

Best Regards
Henny

Perfect!

That was exactly the same thing that caused my error.  No I only need to wait 15 min for the hotstart to finish instead of 1,5 hour =)

Regards
// Alf