water balance total error

Hi
The water balance chart output shows total error -88 and large amount of water going through out boundary. Please see the attachment. How to minimize those errors?

Hi,
A high water balance error is usually indicative of numerical errors in your simulation - not excessive outflows or inflows.
Check you simulation log files for convergence messages.
For example, if the SZ or OL solvers are frequently hitting the max number of iterations.
The easiest way to test if it is a convergence issue is to drastically reduce the max time steps and set them all the same value.
But, don't forget to shorten the simulation length.
douglas