Hello!
I have a model area with no flow BC (so no BC assigned) along the whole outer boundary line. Inside the model, I have a lake with a Cauchy BC. I get a pretty good result for steady state (close to zero) when I check the rate budget. However, sometimes I get a smaller inflow (approximately -30 m^3/d) from a Neumann BC that I'm sure I have not assigned. How is that possible?

Thankful for any help or tips I can get!

/Frida