ERROR in UZ node

Hi everyone,

My simulation is automatically stopping before completing 100% and it seems that it is because of the following error:

Level of phreatic surface  HPSI0=  793.653  HSZ=  793.653  (depth=    0.3952m)  SYield=0.23871
TIMEUZ=    2.504
==> UZ-restart no.  1 from 2018  1  1  2 15 (      2.44 hrs), DT=  11.625 min.

ERROR in UZ node  74 in (    6  155): -0.1396808    mm =  3.016805    %, timestep=  11.625 min.

Does anyone know the reason for the following error? or any possible solution?

Hi Diana,
I can't tell from the message why it stopped.
But, you should check that your water table is not falling below the bottom of you UZ column. This can cause the UZ to stop.
In general, your UZ column should either
+ extend to the bottom of the top SZ layer, or
+ be thicker than the maximum depth of the water table.

Douglas